WO2012100662A1

WO2012100662A1 - Cutting machine

Info

Publication number: WO2012100662A1
Application number: PCT/CN2012/000130
Authority: WO
Inventors: 格哈雷·格雷厄姆; 布朗·沃伦; 索默·哈利
Original assignee: 苏州宝时得电动工具有限公司
Priority date: 2011-01-30
Filing date: 2012-01-30
Publication date: 2012-08-02
Also published as: CN102615344B; TWM436555U; CN102615342B; CN102615345A; CN102615343B; CN102615345B; CN102615342A; CN102615344A; CN102615343A

Abstract

A cutting machine comprises a working bench, a connecting member connected to the working bench, a support frame connected to the connecting member, and a cutting unit pivotally connected to the support frame. The cutting unit comprises a motor and a saw blade rotatably driven by the motor. The support frame is pivotally connected, about an axis perpendicular to the working bench, to the connecting member and is fixed in at least two predetermined working positions, so that the cutting machine performs the cutting operation only at the predetermined working positions. In this way, the cutting machine has high cutting capability and high cutting precision.

Description

Cutting machine

The present invention relates to a cutting machine, and more particularly to a cutting machine having a high cutting ability.

Background technique

As a cutting tool, the traditional cutting machine has a wide range of applications and can be used to cut many metal or non-metal materials, making cutting fast and convenient. The cutting machine generally comprises a work table, a cutting unit with a motor and a saw blade located above the work table, and a guard rail disposed on the work table for positioning the workpiece, wherein the work table is provided with a cutting groove extending in the longitudinal direction, the saw blade The cutting unit can be at least partially extended into the cutting groove, and the cutting unit is rotatably coupled to the table around a pivot shaft fixed to the table for cutting the workpiece. However, the distance between the pivot shaft of the conventional cutting machine and the guardrail is kept constant, which limits the cutting ability, that is, the workpiece size that allows the cutting is limited to a certain range, so that it cannot cut more specifications of the workpiece. Therefore, the cutting machine cannot fully meet the needs of the operator.

Summary of the invention

The technical problem to be solved by the present invention is to provide a cutting machine having high cutting ability and cutting precision.

The technical solution adopted by the present invention to solve the first technical problem: a cutting machine, comprising a work table, having a table supporting surface for supporting a workpiece, and a cutting groove extending along the longitudinal direction disposed on the working table; Connected to the table; a support frame coupled to the connector; a cutting unit rotatably coupled to the support frame about a first axis and having a vertical position relative to the table, the cutting unit Including a motor and a saw blade that is rotationally driven by the motor, the saw blade at least partially extending into the cutting groove; the support frame is rotatably coupled to the connecting member such that the support frame is in the cutting slot relative to the connecting member Moving in the direction of extension, and the support frame is fixed relative to the connector in at least two predetermined working positions, the cutting machine performing the cutting work only at the predetermined working position.

Compared with the prior art, the beneficial t^^t^T^^rM of the present invention is on the connection so that the support frame can move relative to the connecting member in the extending direction of the cutting groove, thereby improving the cutting ability of the cutting machine. Moreover, the movement by rotation can also avoid the friction generated by the sliding, thereby improving the comfort of the operation of the cutting machine. In addition, the support frame is fixed relative to the connecting member at a predetermined working position, so that when the cutting is performed at at least two predetermined working positions, the cutting unit does not move in the extending direction of the cutting groove, thereby improving the cutting precision. The support frame is rotatably coupled to the connector about a second axis, the second axis being disposed in parallel with the first axis.

The cutting machine has a reference plane that is perpendicular to the table support surface in a vertical position and that passes through a second axis that is symmetrically disposed relative to the reference plane in at least two predetermined operating positions.

The cutting machine further includes a locking mechanism that secures the support frame to the at least two predetermined working positions.

The locking mechanism includes a movable operating member disposed on the support frame, a fitting member disposed on the connecting member, and a locking position and a loosening engagement with the fitting member under the action of the operating member. A locking member that moves between open positions.

The operating member is rotatably mounted on the support frame by a locking shaft parallel to the first axis.

A drive member for connecting the locking member is provided on the locking shaft, and the operating member urges the locking member to move between the locked position and the released position by the driving member.

The driving members are symmetrically disposed at both ends of the locking shaft, and the operating member is located between the two driving members.

The locking mechanism further includes a connecting rod for connecting the locking member and the driving member, the first end of the connecting rod is pivotally connected to the driving member by a first pin; the second end of the connecting rod passes The second pin is coupled to the locking member.

The support frame is provided with a longitudinally extending guide groove for receiving the locking member, and the operating member rotates relative to the support frame to urge the locking member along the guiding slot Move in the extension direction.

The mating member is a fitting groove provided on the connecting member.

The support frame includes a left side plate, a right side plate and a connecting plate connecting the left and right side plates, and the left and right side plates are symmetrically disposed with respect to the connecting plate.

The left and right side panels and the connecting plate form a receiving space for receiving the connecting member. - Hair » Another 解决解决高高高高高 ] ] ] ] ] ] ] ] ] ] ] ] ] ] ] ]

The technical solution adopted by the present invention solves the technical problem: a cutting machine, comprising a work table, having a table supporting surface for supporting a workpiece, a cutting groove extending along the longitudinal length disposed on the working table; a connecting member, and a a support station is movably connected to the connecting member, the support frame is movable relative to the connecting member in a direction in which the cutting groove extends; a cutting unit, surrounding the first An axis is rotatably coupled to the support frame, the cutting unit includes a motor and a saw blade that is rotationally driven by the motor, the saw blade at least partially extending into the cutting slot; the cutting machine further comprising a support frame and a locking mechanism between the connecting members, the locking mechanism having a locking state for fixing the supporting frame in at least two predetermined working positions and allowing the supporting frame to move relative to the connecting member Open state.

Compared with the prior art, the beneficial effects of the invention: the support frame is movable relative to the connecting member in the extending direction of the cutting groove, thereby improving the cutting ability of the cutting machine; and the cutting machine is further provided with fixing the support frame at least The pinning mechanism of the two predetermined working positions, such that when the cutting is performed at at least two predetermined working positions, the locking mechanism ensures that the first axis around the cutting unit is relatively fixed, thereby improving the cutting accuracy.

The support frame is rotatably coupled to the connector about a second axis. And the second axis is disposed in parallel with the first axis.

The support frame is slidably coupled to the connecting member.

The locking mechanism comprises an movable operating member disposed on the support frame, a fitting member disposed on the connecting member, and a locking position and a loosening engagement with the fitting member under the action of the operating member. A locking member that moves between open positions.

The ram is rotatably mounted to the support frame by a locking shaft that is parallel to the first axis.

A drive member coupled to the locking member is provided on the locking shaft, and the operating member urges the locking member to move between the locked position and the released position by the driving member.

The driving member is symmetrically disposed at both ends of the locking shaft, and the operating member is located between the two driving members.

The locking mechanism further includes a connecting rod for connecting the locking member and the driving member, the first end of the connecting rod is pivotally connected to the driving member by a first pin; the second end of the connecting rod passes The second pin is connected to the locked member.

The support frame is provided with a longitudinally extending guiding groove for receiving the locking member, and the locking member rotates relative to the supporting frame to urge the locking member to the guiding groove The direction of extension moves.

The rotation of the operating member translates into a linear movement of the locking member.

The mating member is a fitting groove provided on the connecting member.

An adjustment mechanism is provided on the support frame for adjusting a position of the locking shaft in an extending direction of the guide groove. The adjustment mechanism includes an adjustment block having a mounting hole, an adjustment screw for driving the adjustment block, and a locking screw for mounting the adjustment block to the support frame, and the locking shaft is disposed in the mounting hole.

The cutting machine performs the cutting work only at the at least two predetermined working positions.

The connector is rotatably coupled to the table by a longitudinal axis that is parallel to the direction of extension of the cutting slot.

The projection of the at least two predetermined working positions in the direction in which the cutting grooves extend is sequentially arranged.

Another technical problem to be solved by the present invention is to provide a cutting machine with high safety. The technical solution adopted by the present invention solves the technical problem: a cutting machine, including a work table, having a table supporting surface for supporting a workpiece a longitudinally extending cutting slot disposed on the table; a support mechanism coupled to the table, the support mechanism including a connector coupled to the table and a support frame rotatably coupled to the connector, The support frame moves relative to the connecting member in the extending direction of the cutting groove and is fixed at at least two predetermined working positions; the cutting unit is rotatably coupled to the support frame about the first axis, the cutting unit includes a fixed shield rotatably coupled to the support frame, a motor housing coupled to the fixed cover, and a motor housed in the motor housing for driving the saw blade to rotate about the axis of the saw blade; the cutter further includes a setting a lower limit mechanism between the cutting unit and the support mechanism, the lower limit mechanism for determining at the at least two predetermined jobs Is set, the minimum distance to the axis of the blade supporting surface of the same table.

Advantageous Effects of the Invention Compared with the prior art: a lower limit mechanism is provided between the cutting unit and the support mechanism, the lower limit mechanism for determining the saw blade axis and the work at different predetermined working positions The minimum distance of the support surface is the same, which improves the safety of the cutting machine.

The lower limit mechanism includes at least two abutment surfaces disposed on the cutting unit, and a stop surface movably disposed on the support mechanism, wherein the stop surface abuts against the abutment surface for determining The minimum distance between the saw blade axis and the table support surface.

The stop surface is interlocked with the support frame.

The stop surface is rotatably disposed on the support mechanism.

The direction of rotation of the stop surface is the same as the direction of rotation of the support frame.

The cutting machine further includes a stop and a link pivotally coupled to the stop, wherein the first end of the link is pivotally coupled to the support frame about a third axis, and the second end surrounds the fourth An axis is pivotally coupled to the stop; a first end of the stop is pivotally coupled to the connector about a fifth axis, and the stop face is disposed at a second of the stop end. The third, fourth, and fifth axes are parallel to each other. The cutting machine further includes a stopper and a link pivotally coupled to the stopper, wherein the first end of the stopper is pivotally coupled to the support frame, and the stop surface is disposed at the a second end of the stop; a first end of the link pivotally coupled to the connector and a second end pivotally coupled to the stop.

The fixed shield is provided with at least two abutting faces of a step type. The at least two abutment faces are connected by a bevel.

Another technical problem to be solved by the present invention is to provide a cutting machine capable of quickly and conveniently determining the angle of inclination of the cutting unit relative to the table.

The technical solution adopted by the present invention solves the technical problem: a cutting machine, comprising: a workbench having a table support surface for supporting a workpiece; a connecting member connected to the table on a rotation axis about a longitudinal axis, the longitudinal a shaft axis parallel to the table support surface; a cutting unit coupled to the connecting member, the cutting unit including a motor and a saw blade rotationally driven by the motor; the cutting unit having a vertical position relative to the table The connecting member rotates about a longitudinal axis for supporting the cutting unit to rotate in at least one direction counterclockwise and clockwise with respect to the vertical position; a tilt positioning mechanism disposed between the connecting member and the table; The tilt positioning mechanism includes a stopper disposed on one of the table and the connecting member, a positioning member movably disposed on the other of the table and the connecting member, wherein the positioning member includes at least two stepped positioning faces, Moving the positioning member, at least two positioning surfaces are selectively engageable with the stopping member to set the cutting unit It is at a different angle of rotation relative to the table.

Compared with the prior art, the invention has the following advantages: the stopper is connected to one of the worktable and the connecting member, the positioning member is movably connected to one of the working table and the connecting member, and the positioning member has at least two A stepped positioning surface, so that the tilting angle of the cutting unit relative to the table can be determined quickly and conveniently by simply moving the positioning member.

The positioning member is rotatably disposed on the connecting member.

The stoppers are two, symmetrically disposed on the table; the positioning members are two, symmetrically disposed on the connecting member.

The connecting member is provided with a first mounting surface for mounting the positioning member, and in the vertical position, the first mounting surface is at an angle of 45 degrees with the plane of the saw blade.

The positioning member is rotatably mounted on the first mounting surface, and the positioning surface of the positioning member is parallel to the first mounting surface.

The connecting member is provided with a second mounting surface for mounting the positioning member, the first mounting surface and the second mounting surface intersect perpendicularly at an intersection line. In the vertical position, the intersection line is located at the position where the saw blade is located Flat Face.

The positioning member is rotatably mounted on the second mounting surface, and the positioning surface of the positioning member is parallel to the second mounting surface.

The positioning member includes four stepped positioning surfaces.

The axial depth of the positioning surface of the positioning member is sequentially changed.

The positioning surfaces of the positioning members are hooked on the circumference of the positioning member.

The positioning member includes a protrusion which is uniformly distributed with at least two different axial depths, and adjacent protrusions are connected by a circular arc, and the positioning surface is formed on the protrusion.

DRAWINGS

1 is a perspective view of a cutting machine in an embodiment of the present invention, and the cutting unit is at an upper limit position. 2 is a perspective view of a cutting machine in an embodiment of the present invention, and the cutting unit is at a lower limit position. Figure 3 is a partial exploded perspective view of the cutting machine in the embodiment of the present invention.

4 is a perspective view of the cutting machine with the base and the cutting unit removed in the embodiment of the present invention. Figure 5 is a schematic illustration of a cutting machine in accordance with an embodiment of the present invention with the cutting unit in a lower limit position and in a first working position.

Figure 6 is a schematic illustration of a cutting machine in accordance with an embodiment of the present invention with the cutting unit in a lower limit position and in a second working position.

Figure 7 is a schematic illustration of a cutting machine in accordance with an embodiment of the present invention with the cutting unit in an upper limit position and in a first working position.

Figure 8 is a schematic illustration of a cutting machine in accordance with an embodiment of the present invention with the cutting unit in an upper limit position and in a second working position.

Figure 9 is a cross-sectional view of the locking mechanism of the cutting machine in the embodiment of the present invention, and in a locked position. Figure 10 is a cross-sectional view of the locking mechanism of the cutting machine in the embodiment of the present invention, and in the released position . Figure 1 1 is a perspective view of a cutting machine in an embodiment of the present invention.

Figure 12 is a partial perspective view of the cutting machine in the embodiment of the present invention.

Figure 13 is a partial perspective view of the cutting machine in the embodiment of the present invention.

Figure 14 is a partial perspective view of the cutting machine of the present invention.

Figure 15 is a perspective view of the cutting machine in the embodiment of the present invention, and the cutting unit is in an inclined position. Figure 16 is a schematic view of a cutting machine in an embodiment of the present invention.

Figure 17 is a partial enlarged view of Figure 16.

among them

30. Base 3 1 . Blade axis 32. Workbench 34. Support mechanism 35. Motor housing 36. Cutting unit

38. Saw blade 40. First axis 41. Stop groove

42. Base support surface 43. Stop bolt 44. Guardrail

45. Lower limit mechanism 46. Workbench support surface 47. Vertical abutment surface

48. Cutting groove 50. Bevel locking mechanism 52. Tilt locking mechanism

54. Connecting piece 55. Limiting groove 56. Support frame

57. Limit pin 58. Vertical axis 59. Vertical axis

60. Auxiliary hole 62. Pin shaft 64. Left side plate

66. Right side plate 67. Second axis 68. Connecting plate

70. Connection hole 71. Dust suction pipe 72. Pin hole

73. Dust collector 74. Pivot hole 76. Containing space

78. Locking mechanism 80. Operating parts 81. Abutment

82. Locking member 83. Mating groove 84. Locking shaft

86. Flat square hole 88. Drive member 90. Flat square hole

92. Connecting rod 94. First pin 96. Second pin

98. Guide groove 100. Adjustment hole 102. Adjustment mechanism

104. Mounting holes 106. Adjustment block 108. Adjustment screw

109. Hole 111. Locking screw 112. Stop face

113. Third axis 114. Connecting rod 115. Fourth axis

116. Stop 117. Fifth axis 118. First end

120. second end 122. first end 124. second end

126. Limit block 128. First abutment surface 130. Second abutment surface

132. Bevel 140. Tilting mechanism 142. Stopper

144. Positioning member 146. Positioning surface one 148. Positioning surface two

150. Positioning surface three 152. Positioning surface four 154. Boss

156. First mounting surface 158. Second mounting surface 160. Line of intersection

detailed description

The invention will now be further described with reference to the drawings and preferred embodiments.

As shown in FIG. 1, the cutting machine includes a base 30, a rotatably mounted table 32 disposed on the base 30, a support mechanism 34 coupled to the table 32, and a cutting unit 36 pivotally coupled to the support mechanism 34, wherein The cutting unit 36 includes a fixed shield 33 that is pivotally coupled to the support mechanism 34, and is fixed Shield 33 is a fixedly connected motor housing 35, a motor (not shown) received in the motor housing 35 that drives the saw blade 38 to rotate about the saw blade axis 3 1 . The cutting unit 36 is rotatable about the first axis 40 . The support mechanism 34 is disposed such that the cutting unit 36 rotates up and down about the first axis 40 to facilitate the saw blade 38 to cut the workpiece. In the description of the present invention, unless otherwise indicated, directional terms such as left, right, front, back, up and down, etc., are relative to the direction in which the cutter is normally used, as defined by the cutter near the operator. On the front side, away from the operator is the rear side of the cutting machine.

The cutting unit 36 is rotated about the first axis 40 between the upper limit position and the lower limit position. As shown in Fig. 1, the cutting unit 36 is at the upper limit position, and accordingly, as shown in Fig. 2, the cutting unit 36 is at the upper limit position.

As shown in Fig. 2, the cutting unit 36 includes a stopper groove 41, and the support mechanism 34 is provided with a stopper bolt 43. As shown in Fig. 1, the stop groove 4 1 cooperates with the stopper bolt 43 to define the upper limit position of the cutting unit 36, thus preventing the cutting unit 36 from moving excessively upward.

As shown in Fig. 2, the cutting machine is further provided with a lower limit mechanism 45 which defines the lowermost position of the cutting unit 36, thus preventing the cutting unit 36 from moving excessively downward to damage the table top of the support base 30. The specific structure of the lower limit mechanism 45 will be described in detail later.

As shown in Figures 1 and 2, the base 30 has a base support surface 42 that supports the workpiece in a horizontal direction. A guard rail 44 is symmetrically disposed on the base 30. The guard rail 44 has a vertical abutment surface 47 disposed perpendicularly to the base support surface 42 for primarily abutting the workpiece in a vertical direction for easy cutting.

The table 32 has a table support surface 46 for supporting the workpiece in a horizontal direction, the table support surface 46 being substantially flush with the base support surface 42, which cooperate to collectively support the workpiece. The table 32 is provided with a longitudinally extending cutting groove 48. The saw blade 38 extends at least partially into the cutting groove 48. The table 32 is rotatably disposed on the base 30 such that the table 32 can drive the cutting unit 36 relative to the cutting unit 36. The base 30 is rotated to facilitate adjustment of the horizontal oblique cut, which is what is known to those skilled in the art to adjust the bevel angle. Rotation of table 32 changes the angle of blade 38 relative to guard rail 44, but maintains blade 38 perpendicular to table 32. The cutter is provided with a bevel locking mechanism 50 that locks the table 32 to the base 30.

As shown in FIG. 3, the support mechanism 34 ^ ^ connector 54 and the support frame connected to the connector 54

56.

The connector 54 can be fixedly mounted to the table 32 or can be pivotally coupled to the table 32.

The cutting unit 36 has a vertical position relative to the table 32 in which the saw blade 38 is perpendicular to the table 32. In the present embodiment, the connecting member 54 is rotatably coupled via the longitudinal axis 58. On the table 32, the connecting member 54 is driven to rotate the cutting unit 36 relative to the table 32 about the longitudinal axis 59, that is, the supporting cutting unit 36 is rotated in at least one direction counterclockwise and clockwise with respect to the vertical position, thereby facilitating the saw blade 38. The tilting cut in the vertical direction is adjusted. That is, the adjustment of the tilt angle is known to those skilled in the art. Rotation of the connector 54 changes the angle of the blade 38 relative to the table 32, but maintains the blade 38 perpendicular to the fence 44. As will be appreciated by those skilled in the art, the bevel angle and the tilt angle can be adjusted separately or simultaneously to achieve a composite cut.

The cutter is provided with a tilt lock mechanism 52 that locks the connector 54 to the table 32.

The longitudinal axis 58 is disposed in parallel with the extending direction of the cutting groove 48. In the present embodiment, the longitudinal shaft 58 is fixed to the table 32. The connecting member 54 is provided with an auxiliary hole 60 for receiving the longitudinal shaft 58. The longitudinal shaft 58 is disposed in the auxiliary hole 60. Of course, it will be appreciated by those skilled in the art that the longitudinal axis 58 can also be disposed on the connector 54 and the table 32 is provided with an auxiliary aperture for receiving the longitudinal axis 58.

The support frame 56 is movably coupled to the connector 54 to facilitate movement of the support frame 56 relative to the connector 54 in the direction of extension of the cutting slot 48. The movement of the support frame 56 in the extending direction of the cutting groove 48 causes the cutting unit 36 to move in the extending direction of the cutting groove 48, thereby changing the cutting ability of the cutting machine.

The support frame 56 can be slidably disposed on the connecting member 54 or can be pivotally disposed on the connecting member 54. In the present embodiment, the support frame 56 is rotatably coupled to the connecting member 54 via the pin 62 so that the support frame 56 drives the cutting unit 36 to be adjusted relative to the connecting member 54 in a direction parallel to the longitudinal axis 59. Change the cutting ability of the cutting machine. The pin 62 has a second axis 67. In the present embodiment, the second axis 67 is disposed parallel to the first axis 40. Of course, the second axis 67 can also be disposed obliquely relative to the first axis 40.

Referring again to Fig. 3, the support frame 56 includes left and right side plates 64 and 66 and a connecting plate 68 connecting the left and right side plates 64 and 66. The left and right side plates 64 and 66 are disposed substantially symmetrically with respect to the connecting plate 68, each having longitudinally extending ends, wherein the first ends of the left and right side plates 64 and 66 are correspondingly provided with connecting holes 70, which are provided on the connecting member 54. There is a pin hole 72, and the pin 62 is disposed in the pin hole 72 and the connecting hole 70, so that the support frame 56 is rotatably disposed on the connecting member 54 t to cut the single H over rotating shaft - (not shown) to be rotatable Connected to the support frame 56, corresponding to the second end of the left and right side plates 64 and 66 is provided with a pivot hole 74, the cutting unit 36 is provided with a shaft hole (not shown), the rotating shaft (not shown) The cutting unit 36 is rotatably disposed on the support frame 56 through the pivot hole 74 and the shaft hole.

Referring again to Figures 3 and 4, the connecting plate 68 is disposed adjacent the second ends of the left and right side plates 64 and 66. Position, the connecting plate 68 and the left and right side plates 64 and 66 form a receiving space 76 for receiving the connecting member 54 at the first ends of the left and right side plates 64 and 66, thus making the overall structure of the cutting machine more compact.

The outer sides of the left and right side plates 64 and 66 are provided with ribs for increasing the rigidity of the support frame 56 and reducing the weight. In the present embodiment, the left and right side plates 64 and 66 and the connecting plate 68 are integrally formed. Of course, those skilled in the art should know that the left and right side plates 64 and 66 and the connecting plate 68 can also be connected in other ways, such as Riveting, welding, etc.

A hole (not shown) through which the dust suction pipe 71 passes is provided on the connecting plate 68, so that a dust suction device 73 is provided between the first axis 40 and the table 32, so that dust can be collected.

The support frame 56 is rotatably coupled to the connecting member 54 about the second axis 67 and rotates within a certain range. However, the cutting operation is performed only after reaching at least two predetermined working positions, and the cutting work cannot be performed during the rotation of the support frame 56 with respect to the connecting member 54. In the present embodiment, the cutter has two predetermined working positions, and of course, three or more working positions can be provided as needed.

Projections of at least two predetermined working positions in the direction of the longitudinal axis 58 are sequentially arranged. That is, although the actual direction of movement of the second support member relative to the first support member is not necessarily parallel to the longitudinal axis 58 direction, the actual direction of motion has a component parallel to the longitudinal axis 58.

One of the support frame 56 and the connecting member 54 is provided with a limiting groove, and the other of the two is provided with a limiting pin. In the embodiment, the connecting member 54 is provided with a limiting pin 57. The supporting frame 56 is provided with a limiting slot 55. The limiting pin 57 is received in the limiting slot 55, thereby limiting the support frame 56 relative to the connecting member 54. Rotation range. As shown in Figures 5 and 7, when the limit pin 57 is located at the rearmost position of the limit groove 55, the cutter is in the first working position, as shown in Figs. 6 and 8. When the limit pin 57 is located at the foremost side position of the limit groove 55, the cutter is located at the second working position.

As shown in FIGS. 5 and 6, during the rotation of the support frame 56 about the second axis 67, the first axis 40 around the cutting unit 36 also circularly moves about the second axis 67, facilitating the first axis 40. Adjustments are made parallel to the direction of extension of the cutting slot 48 to change the position of the saw blade 38 relative to the guard rail 44 for meeting various cutting requirements.

The cut-off I machine has a reference plane which is a plane that is placed at the work-station support surface 46 and passes through the second axis 67. The first axis 40 is circularly moved about the second axis 67 through the reference plane, and in at least two predetermined working positions, the first axis 40 is preferably symmetrically disposed relative to the reference plane A; The first axis 40 may also not be symmetrically disposed relative to the reference plane A. The first axis 40 is symmetrically arranged with respect to the reference plane A, which is convenient The blade axis 31 of the saw blade 38 is now at the same minimum distance as the table support surface 46 at the predetermined working position.

As shown in Figures 5 and 6, the cutting unit 36 is in the lower limit position, and the distance W 1 between the saw blade axis 31 and the vertical abutment surface 47 of the guard rail 44 when the cutter is in the first working position is greater than the cutting machine. The distance W2 between the blade axis 3 1 and the vertical abutment surface 47 in the second position. As such, the cutting capability of the cutter in the first working position and the second working position will vary. However, in the present embodiment, the minimum distance H between the saw blade axis 3 1 of the saw blade 38 and the table support surface 46 is equal when the cutting machine is in the first working position and the second working position.

As shown in FIGS. 7 and 8, the cutting unit 36 is in the upper limit position, and the distance L 1 between the saw blade axis 3 1 and the table support surface 46 when the cutter is in the first working position is smaller than when the cutting machine is in the second position. The distance L2 between the blade axis 3 1 and the table support surface 46. Thus, when the cutter is in the first working position and the second working position, the angle of rotation of the cutting unit 36 about the first axis 40 is different, about 53 degrees and 43 degrees, respectively, which differ by about 10 degrees.

Referring again to Figure 5, the cutting machine is in the first working position, at which time the first axis 40 is on the front side of the reference plane A. In this first working position, the saw blade 38 is relatively closer to the front side of the table 32, making the cutter a greater advantage in cutting width or in cutting crown workpieces. For example, it is possible to cut a crown workpiece with a height of 9 1⁄2 inches, or higher; or to cut a rectangular workpiece of 2 * 10 inches, or even a workpiece with a width of more than 10 inches. Of course, since the saw blade 38 is relatively forward and cannot pass through the virtual intersection of the vertical abutment surface 47 and the cutting groove 48, it is necessary to use a support pad to raise the workpiece to cut when the rectangular workpiece is cut.

Referring again to Figure 6, the cutting machine is in the second working position, at which time the first axis 40 is located on the rear side of the reference plane A. In the second working position, the distance W2 between the saw blade axis 3 1 of the saw blade 38 and the vertical abutment surface 47 of the guard rail 44 is less than the vertical axis of the saw blade axis 3 1 when the cutting machine is in the first position. The distance W 1 between the faces 47, the saw blade 38 is relatively closer to the rear side of the table 32, such that the cutter is somewhat limited in width or in the height of the workpiece being cut. However, in this position, the saw blade 38 can always pass through the virtual intersection of the vertical abutment surface 47 and the cutting groove 48, so that it is advantageous to cut the rectangular workpiece.

In this way, the operator can select the cutting work in the first working position or the second working position according to actual needs. Since the cutting work can be performed at at least two predetermined working positions, the cutting ability of the cutting machine is improved; the cutting machine rotatably mounts the support frame 56 on the connecting member 57, and the cutting unit 36 is realized in the cutting groove 48 by rotation. Movement in the direction of extension, avoiding slippage The friction of the raw one improves the comfort of the operation of the cutting machine.

The cutting unit 36 and the support frame 56 rotate relative to the connector 54 about the second axis 67. When the support frame 56 reaches the predetermined working position, the position of the support frame 56 needs to be fixed relative to the connector 54. Thereby ensuring that during the cutting process, the first axis 40 around which the cutting unit 36 is also relatively fixed relative to the connector 54 or the table 32, such that the cutting unit 36 can be pivoted about a first axis 40 that is fixed relative to the table 32, The lower pivoting of the workpiece makes the simplification simple and improves the cutting accuracy.

As shown in Figures 3, 9, and 10, the cutting machine further includes a locking mechanism 78 having a locked state for securing the support frame 56 in at least two predetermined working positions and allowing the support frame 56. The released state relative to the movement of the connector 54.

The locking mechanism 78 is adapted to pivotally connect the support frame 56 to the connector member 54 and to the support frame 56 for sliding connection to the connector member 54.

Referring to FIG. 3, the locking mechanism 78 includes an operating member 80, a locking member 82 coupled to the operating member 80, and a fitting member disposed on the connecting member 54, wherein the operating member 80 is movably disposed on the support frame 56 for The locking member 82 is caused to move between a locked position that mates with the mating member and a released position that disengages the mating member.

The operating member 80 is rotatably mounted on the support frame 56 by a locking shaft 84. In the present embodiment, the locking shaft 84 is coupled between the left and right side plates 64 and 66.

The operating member 80 has a grip portion disposed in parallel with the shaft of the locking shaft 84 for the operator to operate and hold.

In the present embodiment, two drive members 88 are coupled to both ends of the lock shaft 84, and the drive member 88 is located between the left and right side plates 64 and 66 and is symmetrically disposed with respect to the center of the lock shaft 84. The member 80 causes the locking member 82 to move between the locked position and the released position by the drive member 88.

The locking shaft 84 is a flat square shaft, and the operating member 80 is provided with a flat square hole 86. The operating member 80 is fixedly coupled to the locking shaft 84 through the flat square hole 86, and is disposed between the left and right side plates 64 and 66. .

Similarly, the driving member 88 is also provided with a flat square hole 90, and the driving member 88 is fixedly coupled to the locking shaft 84 through the flat square hole 90. Of course, the skilled person in the art can rive or weld together, and of course, can be integrally formed as an operating member for driving the locking member 82.

In the present embodiment, the locking mechanism 78 includes two symmetrically disposed locking members 82. The locking mechanism 78 further includes two connecting rods 92 for connecting the locking member 82 and the driving member 88. In the present embodiment, the connecting rod 92 is substantially curved, and the curved structure can serve as a cushioning function for manufacturing and rotation. Of course, the connecting rod 92 can also be a straight rod or other form.

The first end of the connecting rod 92 is pivotally coupled to the driving member 88 via a first pin 94; the second end of the connecting rod 92 is coupled to the locking member 82 via a second pin 96. When the operating member 80 is rotated about the axis of the locking shaft 84, the driving member 88 drives the connecting rod 92 to rotate, thereby changing the distance between the second pin 96 and the axis of the locking shaft 84.

As shown in FIG. 9, the connecting plate 68 of the support frame 56 is provided with a longitudinally extending guiding groove 98 for receiving the locking member 82. When the operating member 80 is rotated about the axis of the locking shaft 84, the distance between the axes of the second pin 96 and the locking shaft 84 is changed, thereby causing the locking member 82 to be located in the mating member along the extending direction of the guiding groove 98. Movement between the locked position and the released position of the disengagement fitting. Thus, the rotation of the operating member 80 is converted into a linear movement of the locking member 82.

The mating piece is a mating groove provided on the connecting member 54. In this embodiment, as shown in FIG. 3, two matching grooves 83 are provided on two sides of the connecting member 54, and the two locking members 82 are respectively matched with one of the two matching grooves 83 on the corresponding side. Thus, the support frame 56 can be fixed relative to the connector 54 at a predetermined working position. Of course, the number of the mating slots 83 should be equal to or greater than the predetermined working position.

When the support frame 56 is rotated about the second axis 67 to the predetermined working position, the rotating member 80 is rotated to increase the distance between the second pin 96 and the axis of the locking shaft 84 to push the extension of the locking member 82 along the guiding groove 98. The direction is moved to the locking position of the insertion fitting groove 83, as shown in Fig. 9, so that the support frame 56 is in a locked state, at which time the abutment portion 81 of the operating member 80 abuts against the support frame 56. In this locked state, the frictional force between the locking member 82 and the engaging groove 83 causes the operating member 80 to remain stable.

Correspondingly, as shown in FIG. 10, the operating member 80 is rotated in the opposite direction to be in the second fixed position, and the grip portion of the operating member 80 and the locking shaft 84 are substantially at the same level, so that the second pin 96 and the lock are pulled closer. The distance between the axes of the tightening shafts 84, thereby moving the locking member 82 in the extending direction of the guiding groove 98 to the releasing position of the disengagement fitting groove 83, so that the support frame 56 is turned to the released state, which can be relatively connected Pieces 54 are free to rotate. In this released state, the frictional force between the locking member 82 and the guide groove 98 causes the jaw to be held, and the shuttle 6 is switched between the locked state and the released state by simply turning on/off 80. Moreover, it is also possible to make the operating member 80 stable in both states without using other structures.

Of course, if the locking mechanism 78 includes only the locking member 82 disposed on the side of the support frame 56, the engaging groove 83, and the driving member 88, the locking effect of the supporting frame 56 on the connecting member 54 can also be achieved. fruit.

As shown in FIG. 3 and FIG. 11, the left and right side plates 64 and 66 are correspondingly provided with adjustment holes 100, and the locking shafts 84 are disposed in the two adjustment holes 100, so that the operating member 80 is rotatably mounted on the support frame 56. on. Due to the mounting, wear, etc., in the present embodiment, the adjustment hole 100 is a waisted hole to facilitate the movement of the locking shaft 84 relative thereto.

The cutting machine includes an adjustment mechanism 102 for adjusting the position of the locking shaft 84.

The adjustment mechanism 102 is disposed on the left and right side plates 64 and 66, and is located outside the left and right side plates 64 and 66. The adjustment mechanism 102 includes an adjustment block 106 having a mounting hole 104, an adjustment screw 108 for driving the adjustment block 106, and a locking screw 111 for mounting the adjustment block 106 on the left and right side plates 64 and 66. Two ends of the locking shaft 84 are respectively disposed in the adjusting hole 100 and the mounting hole 104, so that the operating member 80 is rotatably mounted on the support frame 56; the adjusting screw 108 is disposed in the left and right side plates 64 and 66 Inside the hole 109. When adjustment is required, simply loosen the locking screw 111, and then operate the adjusting screw 108 to move the pushing adjustment block up or down, and then tighten the locking screw 111 after reaching the proper position.

The cutting machine further includes a lower limit mechanism 45 disposed between the cutting unit 36 and the support mechanism for defining a lowermost position in which the saw blade 38 is vertically movable to prevent the saw blade 38 from moving excessively downward to break the support. The table top of the base 30. In the present embodiment, since the support frame 56 is rotatably disposed on the connecting member 54, the distance of the first axis 40 around the cutting unit 36 in the vertical direction with respect to the table 32 also changes. To ensure that the lower limit positions of the cutting unit 36 that are movable in at least two predetermined working positions are the same, the lower limit mechanism 45 can be mounted on the support mechanism 34 and the cutting unit 36 in a follow-up manner. In at least two predetermined working positions, the minimum distance between the blade axis 31 and the table support surface 46 is the same for improving the safety of the cutting machine.

As shown in FIG. 12, FIG. 13 and FIG. 14, the lower limit mechanism 45 includes at least two abutment faces disposed on the cutting unit 36, and a stop face 112 movably coupled to the support mechanism 34, wherein the stop faces 112 Abutting against the abutment surface is used to determine the minimum distance between the blade axis 31 and the table support surface 46. The number of abutments should not be less than the number of predetermined working positions.

The stop surface 112 is interlocked with the support frame 56. In the implementation, the stop face 112 is rotatable - disposed on the support mechanism 34. And the direction of rotation of the stop face 112 is the same as the direction of rotation of the support frame 56.

During rotation of the support frame 56 about the second axis 67 relative to the connector 54, the stop surface 112 also rotates about the axis, while the path of motion of the stop face 112 and the first axis 40 surround the second axis 67. There is a certain proportional relationship between the motion trajectories. The existence of the equivalence relationship makes it set at The abutment surface on the cutting unit 36 abuts the stop surface 112 on the path of movement of the stop surface 112 to ensure that between at least two predetermined working positions, between the blade axis 31 and the table support surface 46 The minimum distance is equal.

The cutting machine further includes a stop 116 and a link 4 pivotally coupled to the stop 116, wherein the first end 118 of the link 114 is pivotally coupled to the support frame 56 by a third axis 113 and the second end 120 is passed The fourth axis 115 is pivotally coupled to the stop member 116; the first end 122 of the stop member 116 is pivotally coupled to the connector 54 by a fifth axis 117, and the stop surface 112 is disposed at the stop member The second end 124 of 116. The third, fourth, and fifth axes 113, 115, and 117 are parallel to each other. It is of course also possible to pivotally connect the first end of the stop member 116 to the support frame 56, the second end of which is pivotally connected to the link 114; the first end of the link 114 is pivotally connected to the connecting member 54, A stop face 112 is disposed at the second end of the link 114.

In the present embodiment, the second end 120 of the link 114 is rotatably coupled to a substantially intermediate position of the stop member 116.

In the present embodiment, the stopper 116 has a U-shaped cross section and is symmetrically disposed with respect to the link 114, and the stopper surface 112 is formed on the end surface of the second end of the stopper 116. The cross-section of the stop member 116 gradually decreases from the first end 122 to the second end 124. Of course, the cross section of the stop 116 can also be other shapes.

A stopper 126 is provided on the fixed shield 33. The abutment surface is formed on the stopper 126, and is disposed at a position against the stopper surface 112 on the movement locus of the stopper surface 112.

In this embodiment, the limiting block 126 has an opening for partially receiving the stopper 116, and the abutting surface is disposed in the opening.

The limiting block 126 includes a stepped first abutting surface 128 and a second abutting surface 130. As shown in FIGS. 5 and 13, in the first working position, the first abutting surface 128 abuts the stopping surface 112. As shown in FIGS. 6 and 14, in the second working position, the second abutting surface 130 abuts against the stop surface 112.

The first abutment surface 128 and the second abutment surface 130 are connected by a slope 132. The first abutting surface 128 and the second abutting surface 130 are not disposed in parallel.

The fixed shroud 33 has a lower bottom surface facing the table supporting surface 46, and the limiting block 12 has a lower surface facing the table supporting surface 46, wherein the lower bottom surface is parallel or coincident with the lower surface, but the lower surface of the limiting block The distance from the table support surface 46 is not greater than the distance between the lower bottom surface of the fixed shroud 33 and the table support surface 46.

When the support frame 56 rotates relative to the connecting member 54 about the second axis 67, the third axis 113 is rotated to rotate, so that the link 114 causes the stop member 116 to rotate about the fifth axis 117. The direction of rotation of the stopper 116 is the same as the direction of rotation of the support frame 54. There is a certain proportional relationship between the trajectory of the stop surface 12 disposed on the stop member 116 and the trajectory of the first axis 40 about the second axis 67.

As shown in FIGS. 5 and 13, in the first working position, the first abutment surface 128 and the stop surface 112 abut against the trajectory of the stop surface 112 about the fifth axis 117, and the cymbal axis 31 works. The distance between the table support faces 46 is H; as shown in Figures 6 and 14, in the second working position, the movement of the second abutment surface 130 and the stop face 112 about the stop face 112 about the fifth axis 117 The trajectory abuts against each other, and the distance between the blade axis 31 and the table support surface 46 is also H. That is, the minimum distance between the blade axis 31 and the table support surface 46 is the same at at least two predetermined working positions. This increases the safety of the cutting machine.

As shown in Figs. 15, 16, and 17, the cutter is further provided with a tilt positioning mechanism 140 for determining the inclination angle of the cutting unit 36 with respect to the table 32 in the vertical direction. The tilt positioning mechanism 140 includes a stopper 142 disposed on the table 32 and a positioning member 144 movably disposed on the connector 54. Of course, the stopper 142 may also be disposed on the connecting member 54, and the positioning member 144 may be movably disposed on the table 32.

In the double pendulum cutting, the tilt positioning mechanism 140 needs to provide two stoppers and two positioning members, and in the vertical position, the two stoppers are disposed symmetrically with respect to the saw blade 38 on the table 32 and the connecting member 54. In one of the two positioning members, symmetrically disposed on the other of the table 32 and the connecting member 54 with respect to the saw blade 38, so that an inclination angle between about 50 degrees to 50 degrees from the left can be defined; However, in the single pendulum cutting, the tilt positioning mechanism 140 only needs to provide one stopper and one positioning member, and the stopper and the positioning member are disposed on the left side or the right side of the saw blade, so that the left 50 degrees can be limited to The angle of inclination between 0 degrees or 0 degrees to 50 degrees right. Of course, it is also possible to determine the tilt angle of more than 50 degrees.

In the present embodiment, the stoppers 142 are two and are symmetrically disposed on the table 32. The positioning members 142 are also two, symmetrically disposed on the connecting member 54.

The positioning member 144 is rotatably mounted on the connecting member 54, and of course, the positioning member 144 can also be slidably mounted on the connecting member 54.

The keeper 144 includes at least two locating faces having different axial depths. These positioning surfaces can be stepped or spiral. Moreover, in the case of a stepped positioning surface, the positioning surfaces may be arranged in parallel or inclined. In this embodiment, the positioning member 144 includes a plurality of parallel positioning surfaces, at least one step, and each step causes the adjacent planes to have different axial depths respectively; by rotating the positioning member 144, the plurality of parallel positioning surfaces can be Selected and stopper 142 The contact is used to determine the angle of inclination of the cutting unit 36 relative to the table 32.

In the present embodiment, the stop member 142 is a stop bolt mounted on the table 32, and the stop bolt 142 provides a flat surface for contact with the positioning surface of the positioning member 144. When the cutting machine is used for a period of time or during production installation, it is necessary to align the inclination angle determined by the tilt positioning mechanism 140, and then the stop bolt 142 can be rotated to rotate relative to the threaded hole on the table 32 to accurately set Set a specific tilt angle.

The connector 54 is provided with a boss 154 that includes a first mounting surface 156 for mounting the keeper 144. In the present embodiment, in the vertical position, the first mounting surface 156 is at an angle of 45 degrees to the plane in which the saw blade 38 is located. Of course, the plane of the first mounting surface and the blade 38 may not be at an angle of 45 degrees.

In the present example, a positioning member 144 is mounted on the first mounting surface 156, and the positioning surface of the positioning member 144 is parallel to the first mounting surface 156.

The boss 154 further includes a second mounting surface 158 for mounting the keeper 144. The first mounting surface 156 and the second mounting surface 158 intersect perpendicularly at an intersection 160. In a vertical position, the line of intersection 160 is located at the saw blade 38. flat.

In the present example, another positioning member 144 is mounted on the second mounting surface 158, and the positioning surface of the positioning member 144 is parallel to the second mounting surface 158.

The positioning member 144 is rotatably mounted on the connecting member 54 by a positioning shaft (not numbered) and is located at the lowermost end of the connecting member 54. Each of the positioning surfaces of the positioning member 144 is perpendicular to the axial direction of the positioning shaft. Of course, the positioning surface of the positioning member 144 and the axial direction of the positioning shaft may be inclined as needed.

In this embodiment, the positioning member 144 has four steps, and the steps define four different axial depth positioning surfaces, respectively, a positioning surface 146, a positioning surface 148, a positioning surface three 150, and a positioning surface. 152, the axial depths of the four positioning faces 146, 148, 150 and 152 are successively decreasing. When the four positioning faces 146, 148, 150 and 152 are respectively in contact with the stop bolts 142, the inclination angles of the cutting unit 36 with respect to the table 32 can be respectively determined to be about 45 degrees left and right, 46 degrees left and right, and 47 degrees left and right. - Left 48 degrees. The outer contour of the positioning member 144 is substantially square, and the four positioning surfaces 146, 148, 150 and 152 are hooked on the circumference of the positioning member 144, and the adjacent positioning surfaces are connected by a circular arc, thereby facilitating the operator to rotate the positioning member. 144.

In the specific operation, if it is necessary to cut the inclination angle of the left 45 degrees, it is only necessary to rotate the positioning surface 146 of the positioning member 144 disposed on the left side to a position that can contact the plane of the stop bolt 142, so that when the rotation is connected The piece 54 contacts the positioning surface 146 of the positioning member 144 with the stop bolt 142. It is possible to determine the angle of inclination of the left 45 degrees. And so on, if it is necessary to cut the 46 degree or 47 degree or 48 degree inclination angle, it is only necessary to rotate the corresponding positioning surface to a position that can contact the plane of the stop bolt 142. In this way, the cutting machine can cut a 45 degree tilt angle or cut an angle of 45 degrees or more, and can quickly determine 46 degrees, 47 degrees, etc. without the need for pointers and scales. Of course, any angle of inclination between the left 50 degrees and the right 0 degrees can be cut if necessary.

Claims

Claim

A cutting machine comprising:

a workbench having a table support surface supporting the workpiece and a longitudinally extending cutting groove disposed on the table;

a connector, connected to the workbench;

a support frame connected to the connecting member;

a cutting unit rotatably coupled to the support frame about a first axis and having a vertical position relative to the table, the cutting unit including a motor and a saw blade that is rotationally driven by the motor, the saw blade at least partially extending Into the cutting groove;

The utility model is characterized in that: the support frame is rotatably connected to the connecting member such that the support frame moves relative to the connecting member in the extending direction of the cutting groove, and the support frame is at least two with respect to the connecting member The predetermined working positions are fixed, and the cutting machine performs the cutting work only at the predetermined working position.

2. The cutting machine according to claim 1, wherein: the support frame is rotatably coupled to the connecting member about a second axis, and the second axis is disposed in parallel with the first axis.

3. The cutting machine according to claim 2, wherein: the cutting machine has a reference plane perpendicular to the table support surface and passing through the second axis in a vertical position, the cutting machine being at least two The first axis is symmetrically disposed relative to the reference plane when the predetermined working position is desired.

4. The cutting machine of claim 1 wherein: said cutting machine further comprises a locking mechanism for securing said support frame in said at least two predetermined working positions.

5. The cutting machine according to claim 4, wherein: the locking mechanism comprises an movable operating member disposed on the support frame, a fitting member disposed on the connecting member, and being operated by the operating member The locking member that cooperates with the locking position and the locking member that is disengaged from the released position in cooperation with the fitting member.

6. The cutting machine according to claim 5, wherein: the operating member is rotatably mounted on the support frame by a locking shaft parallel to the first axis of the iT.

The cutting machine according to claim 6, wherein: a driving member for connecting the locking member is provided on the locking shaft, and the operating member urges the locking member to be locked by the driving member Move between position and release position.

8. The cutting machine according to claim 7, wherein: the driving member is symmetrically disposed at both ends of the locking shaft, and the operating member is located between the two driving members.

9. The cutting machine according to claim 7, wherein: the locking mechanism further comprises a connecting rod for connecting the locking member and the driving member, the first end of the connecting rod passing through the first pin and the The driving member is pivotally connected; the second end of the connecting rod is connected to the locking member by a second pin.

The cutting machine according to claim 5, wherein: the support frame is provided with a longitudinally extending guiding groove, the guiding groove is for receiving the locking member, and the operating member is opposite to the The rotation of the support frame causes the locking member to move in the extending direction of the guiding groove.

A cutting machine according to claim 5, wherein: said fitting member is a fitting groove provided on the connecting member.

1 . The cutting machine according to claim 1 , wherein: the support frame comprises a left side plate, a right side plate and a connecting plate connecting the left and right side plates, and the left and right side plates are opposite to the connection. The board is symmetrically set.

The cutting machine according to claim 12, wherein the left and right side plates and the connecting plate form a receiving space for accommodating the connecting member.