WO2007022678A1

WO2007022678A1 - The table saw

Info

Publication number: WO2007022678A1
Application number: PCT/CN2006/001491
Authority: WO
Inventors: Xin Wang
Original assignee: Positec Power Tools (Suzhou) Co., Ltd.
Priority date: 2005-08-26
Filing date: 2006-06-29
Publication date: 2007-03-01
Also published as: TW200732116A

Abstract

The table saw comprises a work table having a working surface, a swing support pivotably connected to the work table, a sawing unit connected to a saw frame, a saw blade mounted in the sawing unit, a first electric motor driving the saw blade to rotate, and a positioning mechanism for controlling the movement of the sawing unit with respect to the work table. The positioning mechanism includes at least one second electric motor and a transmission driven by the second electric motor. The transmission connects to the sawing unit. Said second electric motor drives the sawing unit via the transmission, causing the sawing unit to move with respect to the work table. The saw blade can be adjusted in height and angle with respect to the work table by an operator who operates a switch, thus making the adjustment of the position of the saw blade easier.

Description

Table saw

【Technical field 】

The present invention relates to a table saw, and more particularly to a table saw that can adjust the position of the saw blade relative to the lifting and oscillating position of the table.

【 Background technique 】 .

At present, the table saw used in the industry generally includes a base, a motor disposed on the base, and a saw blade driven by the motor, wherein the base is provided with a work table, and the work table is provided with a longitudinal extension for the saw blade A slot extending from the surface of the table and a pair of rails on opposite sides of the table for mounting the chopping fence assembly. In order to control the cutting depth and cutting angle of the saw blade, the table saw is generally provided with an adjustment mechanism to adjust the height and angle of the cutter relative to the table.

At present, a positioning mechanism for adjusting the height of the table and the angular position of the table for the table saw is generally implemented by a manually operated mechanical device. For example, Chinese Patent Publication No. 1173410 discloses a method for controlling the relative operation of the cutter. a cutter lifting mechanism for the surface position, and an angle adjusting mechanism for adjusting the angle of the cutter relative to the working surface; the positioning mechanism is mounted on a support plate, and the support plate is pivotally connected with the table to provide an angle For adjustment, a transmission or gearbox is slidably coupled to the support plate to provide height adjustment; the height of the cutter can be adjusted by a crank and a screw, and a follower moves on the screw by means of a threaded engagement, the lever The follower is connected to the height adjustment lever for slidable movement of the gear case, so that the motor, the roller shaft and the cutter can move upward and downward depending on the direction in which the crank rotates. The angular position of the cutter can be adjusted by pivoting the support plate to change the angle of the saw blade. The angular position of the support plate is locked in place by a locking bar that extends through the arcuate groove at the front end of the cutter bottom, through the support plate and through the arc in the bracket attached to the rear end of the cutter bottom groove. A cam lever mechanism is positioned outwardly of the cutter head such that when the cam lever is rotated about its locked position, the lock bar pushes forward and frictionally locks the support plate between the bracket and the front end of the cutter bottom. The disadvantage of the positioning mechanism is that during the height and angle adjustment process, the operator needs to manually operate the corresponding adjusting member, and the displacement mechanism of the cutting tool relative to the top of the table is generated by the transmission mechanism, and when the angle is adjusted to The locking mechanism is also required to lock when the position is properly set. Such manual adjustment is cumbersome, complicated, and time consuming.

[Content of the Invention]

To overcome the deficiencies of the prior art, the present invention does provide a control device for performing the position of a table saw blade. A table saw, comprising a work table, the work table defining a work surface, a swing frame pivotally connected to the work table, a saw machine connected to the saw frame, a saw blade mounted on the saw machine, driving the saw blade to rotate a first motor, and a positioning mechanism for controlling movement of the saw machine relative to the table, the positioning mechanism comprising at least one second motor, and a transmission mechanism driven by the second motor, the transmission mechanism and The sawing machine is connected, and the second motor drives the sawing machine through the transmission mechanism to cause displacement of the sawing machine relative to the working table.

The second motor is a common driving motor; the second motor is provided with a switch control mechanism for controlling displacement of the saw blade relative to the table; the positioning mechanism includes a first positioning mechanism, and the first positioning mechanism includes The second motor and the transmission mechanism driven by the second motor, wherein the second motor is a swing motor connected to the swing frame and provided with a motor output shaft; the transmission mechanism includes an output provided on the swing motor a gear on the shaft and a bracket connected to the worktable, the bracket is provided with a ring gear, the gear meshes with the ring gear; the saw machine is fixedly connected with the swing frame, so that the swing motor The drive gear meshes with the carrier ring gear to rotate, thereby causing the swing frame to deflect relative to the table, thereby causing the saw blade mounted to the saw machine to angularly displace relative to the work surface.

The positioning mechanism includes a second positioning mechanism, the second motor is a lifting motor, and the second positioning mechanism includes a lifting motor connected to the swing frame, and is screwed to the nut of the output shaft of the lifting motor, and is slidably connected to the swing. a supporting plate of the frame, an engaging member disposed on the supporting plate, the supporting plate engaging member is engaged with the nut; the sawing machine is fixedly connected with the supporting plate, and the lifting motor is rotationally driven to urge the nut along the output shaft of the lifting motor Sliding, the supporting plate engaging member engaged with the nut drives the supporting plate to rise and lower relative to the saw frame, so that the saw blade mounted on the saw machine linearly displaces relative to the working surface.

The positioning mechanism includes a second positioning mechanism, the second motor is a lifting motor, and the second positioning mechanism includes a lifting motor connected to the saw frame, a gear disposed at an end of the output shaft of the lifting motor, and The swinging plate is pivotally connected to the swinging frame, and the sawing machine is fixedly connected to the swinging plate. The swinging plate is provided with a ring gear, and the pinion gear meshes with the ring gear. The lifting motor is rotationally driven to cause the gear to rotate with the ring gear, and the swinging plate is pivoted relative to the swinging frame; the swinging plate is pivoted relative to the swinging frame, so that the saw blade mounted on the sawing machine is opposite to the working table The working surface produces a linear displacement in the vertical direction.

Compared with the prior art, the invention has the beneficial effects that the operation is simple, the adjustment is convenient, and the time is saved, and the operator can realize the position lifting and the angle yaw of the saw blade relative to the table by controlling the operation switch, so that The position adjustment of the saw blade has become easier.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is further described below in conjunction with the drawings and specific embodiments.

Figure 1 is a left side view of the table saw actually proposed by the present invention;

Figure 2 is a plan view of the table saw actually proposed by the present invention;

Figure 3 is a perspective view showing the internal structure of the table saw which is actually proposed by the present invention;

Figure 4 is a bottom view of the table saw in the rear view direction which is indeed proposed by the present invention;

Figure 5 is a cross-sectional view taken along line A-A of Figure 4;

Figure 6 is a cross-sectional view taken along line B-B of Figure 5;

Figure Ί is a cross-sectional view of another embodiment in the direction of Figure 5;

Figure 8 is a cross-sectional view taken along line C-C of Figure 5;

Figure 9 is a partial cross-sectional view showing the front view of the table saw which is actually proposed by the present invention;

Figure 10 is a front view of the table saw which is actually proposed by the present invention;

Among them: 1, table saw; 2, saw blade; 2, sawing machine;

3. Shield; 4. Main motor; 5. Gear mechanism;

6, lifting motor; 6', lifting motor; 7, motor output shaft;

7, the motor output shaft; 8, nut; 8, small gear;

9, the support plate; 9, the swing plate; 10, the base;

11. Workbench; 12. Containment cavity; 13. Bracket connection;

14. Supporting plate engaging member; 15. Scythe; 16. Swing motor;

17, lateral support block; 18, motor output shaft; 18a, pinion;

19, bracket; 19a, ring gear; 19b, ring gear;

20. Switch control mechanism; 21. Lifting control mechanism; 21, Lifting control mechanism:

22, the swing control mechanism; 23, the swing stop; 24, the operating member;

25, the column; 30, the working surface; 31, the table slit;

32, guide rail; 33, swing frame; 34, chute;

35, the engaging member; 41, the main motor output shaft

【 detailed description 】

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS OF THE INVENTION Referring now to the drawings, wherein like reference numerals refer to the same or like parts, FIG. 1 shows a table saw 1 including a base 10 having a receiving cavity 12 therein, the base 10 A substantially rectangular table 11 is disposed above, and the table 11 is supported by the base 10. Referring to FIG. 2, the table 11 defines a working surface 30. The table 11 is provided with an elongated slit 31. A circular saw 2 is located in the receiving cavity 12 and protrudes from the slit 31. Working face 30 has a separate A guide rail 32 on both sides of the slit 31 is used for mounting a fence assembly (not shown), and a boring tool 15 is fixedly connected above the work table U for opening and protecting the sawn workpiece during operation. The cover 3 is used to cover the saw blade 2 and is pivotally connected to the file 15. The purpose of the cover 3 is to enable the saw blade 2 to be in a non-exposed state during operation or under non-working conditions, which is safer in design. A switch control mechanism 20 is located below the table 11 and close to the operator's operating position on the left side base 10 of the body. The position of the switch control mechanism 20 is set such that the operator can easily switch it when standing. Open and close operation.

Referring to Figures 3 and 4, a swing frame 33 is disposed below the table 11, and the swing frame 33 is pivotally connected to the table by a bracket connecting member 13 connected to the bottom surface of the table so that the swing frame 33 is opposite to the table. 11 pivoting, the swing frame 33 is connected with a lateral support block 17, the swing motor 16 of the swing control mechanism 22 is fixedly disposed on the lateral support block 17, and the end of the motor output shaft 18 is provided with a pinion gear 18a (not shown). The bracket 19 is fixedly coupled to the base on the lower side of the table. The bracket 19 is a bent member. The output shaft end of the swing motor 16 is supported on the bracket 19, and the curved upper surface of the bracket 19 is provided and output. The ring gear 19a meshes with the ring gear 19a such that when the swing motor 16 is driven to rotate, the end gear of the output shaft 18 is meshed and rotated along the ring gear 19a of the bracket 19 to urge the lateral support block 17 fixedly coupled to the swing motor. In conjunction with the swing frame 33, pivoting relative to the table 11, similar to the operation of the lift control mechanism 21 described above, one of ordinary skill in the art can change the swing motor 16 by The direction of rotation, thereby controlling the swinging of the oscillating frame 33 relative to the table to the left or right, to achieve control of the angle of inclination of the saw blade relative to the working surface 30 of the table 11; of course, one of ordinary skill in the art can contemplate the swaying motor 16 The bracket ring gear 19a is fixedly connected to the swing frame 33, and the output shaft of the swing motor 16 is provided with a pinion gear, and the pinion gear meshes with the bracket ring gear 19a. When the swing motor 16 is rotationally driven, The output shaft end pinion of the swing motor 16 meshes with the bracket ring gear 19a to rotate, so that the swing frame 33 is pivoted around the table, so that the deflection of the saw 2' relative to the table can also be achieved, so that the saw blade 2 is opposite to the table. The working surface of 11 produces angular displacement; the oscillating motor 16 here is a common driving motor. The ordinary driving motor can also be replaced by a servo motor as needed, but it must be equipped with corresponding control components to achieve its driving, and the cost is relatively Higher.

Referring to Figures 3 and 4, the side frames of the swing frame 33 are respectively provided with chutes 34, into which a support plate 9 is embedded and which can slide up and down along the chute 34 of the swing frame 33.

Referring to Figures 5 and 6, the saw 2 is mounted on a support plate 9, a main motor 4 is provided on the saw 2', and a gear mechanism 5 for transmitting the rotational torque of the main motor 4 is mounted on the main motor. Output shaft 41 The end saw blade 2, the support plate 9 can slide up and down along the sliding grooves 34 on both sides of the swing frame 33, and the main motor 9 also moves up and down with the support plate 9, and the rotary drive of the main motor 9 is controlled by the switch control mechanism 20. The main motor 4 in this embodiment is an ordinary drive motor. The ordinary motor can also be replaced by a servo motor as needed, but it must be equipped with a corresponding control element to achieve its driving, and the cost is relatively high. A lifting control mechanism 21 is used for controlling the support plate 9 to slide up and down along the sliding frame 34 of the swing frame 33, so that the sawing machine 2' fixedly disposed on the supporting plate 9 moves up and down together with the supporting plate, so that the saw provided on the saw frame 2' The knives 2 are displaced in a linear direction with respect to the table 11. The lifting control mechanism 21 is provided with an upright motor 6 arranged vertically, the motor is provided with an output shaft 7, the output shaft 7 is provided with a thread, and the nut 8 is screwed to the output. The shaft 7, an engaging member 35 disposed on the supporting plate 9 is engaged with the nut 8. When the lifting motor 6 is rotationally driven, the nut 8 screwed to the output shaft 7 is displaced in the vertical direction with respect to the output shaft 7; It will be easily imagined by a person skilled in the art that the thread of the nut 8 can be made as a right or left thread, and the external thread of the motor output shaft 7 that meshes with the nut 8 can also produce a corresponding thread change and engage with it if the nut 8 The internal thread is a right thread. When the lifting motor 6 rotates clockwise, the nut 8 moves linearly downward with respect to the output shaft 7. When the lifting motor 6 rotates counterclockwise, the nut 8 is linearly aligned with respect to the output shaft 7. If the internal thread of the nut 8 is a left-hand thread, when the lifting motor 6 rotates clockwise, the nut 8 moves linearly upward with respect to the output shaft 7, and when the lifting motor 6 rotates counterclockwise, the nut 8 is relatively output. The shaft 7 moves straight down. During the actual operation, the up and down movement of the nut 8 relative to the motor output shaft 7 can be changed by controlling the direction of rotation of the motor, which will not be described here. The up and down movement of the nut 8 causes the engaging member 35 engaged therewith to be displaced in the vertical direction. Since the engaging member 25 is fixedly coupled to the support plate 9, the vertical displacement of the engaging member 35 drives the support plate 9 along the swing bracket chute. 34 sliding, the main motor 4 moves up and down along with the support plate 9, thereby realizing the lifting and lowering of the saw blade 2 relative to the working surface 30 of the table 11, and finally controlling the cutting depth of the workpiece; one of ordinary skill in the art can It is assumed that the lifting motor 6 is vertically fixed to the support plate 9. The lifting motor 6 is provided with a threaded output shaft 7, and the output shaft is screwed with a nut 8. The engaging member 25 engaged with the nut 8 is disposed on the swing frame 33. When the lift motor 6 is rotationally driven, the up and down movement of the nut 8 on the output shaft 7 causes the support plate to slide along the chute 34 of the swing frame 33, thereby also achieving linearity of the saw blade 2 relative to the work surface 30 of the table 11. Displacement; the nut 8 and the motor output shaft 7 in this embodiment are the transmission elements of the lifting mechanism 21, and other gear transmissions, pulley drives, or gears and pulleys are conceivable. Use and other transmission mode.

Referring to FIG. 7, one of ordinary skill in the art can also envisage if the swinging frame 33 is cancelled. The structure of the inner sliding support plate 9 can also cause the saw 2' to be displaced in the height direction relative to the table 11, so that the saw blade 2 can be lifted and lowered relative to the working surface 30; the swinging plate 9' is arranged separately from the table 33- The shaft connection, the saw 2 is fixedly disposed on the above-mentioned plate pendulum 9', and the edge of the swing plate 9' is provided with a substantially arcuate ring gear 19b, and the lifting motor 6' is connected to the swing frame 33, and the lifting motor 6' The output shaft is provided with a pinion gear 8', and the pinion gear 8' meshes with the ring gear 19b. When the lifting motor 6' is rotationally driven, the pinion gear 8' is caused to rotate along the ring gear 19b, so that the swinging plate 9' is opposite to the swing frame. 33 is pivoted so that the saw 2' fixedly mounted to the oscillating plate 9' pivots relative to the table 11 to effect linear displacement of the saw blade 2 relative to the working surface 30 of the table 11 in the height direction. In this embodiment, the lifting motor 6 can be disposed on the swinging plate 9', the output shaft of the lifting motor 6' is provided with a pinion 8', and the ring gear 19b is disposed on the saw frame 33, and the pinion 8' is meshed with the ring gear 19b. When the rotary drive motor 6' is rotatably driven, the pinion 8' is meshed and rotated along the ring gear 19b, causing the swinging plate 9' to pivot relative to the swing frame 33, thereby causing the saw 2' fixed to the swinging plate 9' to be opposite to the table 11 pivoting, achieving a linear displacement of the saw blade 2 relative to the working surface 30 of the table 11 in the height direction; the pinion 8' and the ring gear 19b in this embodiment can be driven by gears or pulleys, or gears and Replacement with a transmission mechanism such as a combination of wheels. ·

Referring to Figures 7 and 8, the lateral support block 17 is provided with a stud 25 extending in the direction of the motor output shaft 18 to the lower side of the curved bottom surface of the bracket 19, and the bracket 19 is provided with left and right stoppers 23, in the swing motor Under the rotary drive of 16, the output gear of the swing motor rotates along the upper surface gear of the bracket 19, and the swing frame 33 is deflected relative to the table 11, and when the swing frame 33 is deflected 45 degrees to the left with respect to the table 11, the left stop 23 interferes with the stud 25, preventing the stud 25 from continuing to deflect to the left, so that the maximum left deflection angle of the saw frame 33 is limited to 45 degrees on the left side, and likewise, when the swing frame 33 is deflected to the right relative to the table 11. At the 45 degree position, the right stopper 23 and the boss 25 generate a thousand stops, preventing the boss 25 from continuing to deflect to the right and left, and the maximum angle for deflecting the swing frame 33 to the right is limited to 45 degrees on the right side; The saw blade 2 is also limited when it is in the vertical position, and an operating member 24 is disposed on the table saw base 1 near the operator's operating position below the table 11, and the operating member 24 passes through a short axis extending into the base opening (Fig. Not shown in the middle) The dialing member 26 is connected, the shifting member 26 is a free end, and the other end is fixedly connected with the short shaft, so that the dialing member 26 can rotate with the short axis as a pivot point, when the operator rotates the dialing member When the left side is about 45 degrees inclined, the tilt position is locked (not shown), and the rotational driving of the swing motor 16 causes the swing frame 33 to angularly displace relative to the table 11, when the saw blade 2 reaches the above vertical direction. When the position of the table 11 is the 0 position, the protrusion 25 interferes with the operating member 24, so that the saw blade 2 is limited to the 0 position, such as If the operator wants to cancel the 0 position limit, as long as the locking mechanism is released, the toggle member 26 is rotated, so that the operating member 24 connected to the dial member 26 is rotated by an angle correspondingly at a substantially horizontal position, regardless of the support. The frame 33 is deflected to the left relative to the table 11 or deflected to the right (defined within a range of 45 degrees), and the stud 25 and the operating member 24 do not interfere, thus canceling the limit of the 0 position. The operator can control the displacement of the saw blade 2 in the height direction and the tilt angle with respect to the work surface of the table by controlling the switch control mechanism 20 corresponding to the scale mark (not shown) indicated on the base 10. The gears in this embodiment and the bracket 19 provided with a tooth shape are transmission elements of the swing control mechanism 22, and those skilled in the art can also envisage gear transmission, rack transmission, pulley transmission, or a combination thereof. The transmission mechanism is replaced and will not be described here.

Referring to Figure 9, the switch control mechanism 20 includes an emergency stop switch A for emergency stop in the event of a dangerous situation, the main motor control switch ^ B1 is indicated as an open switch, and B2 is a close switch for controlling the lift control The lift switch C of the mechanism 21, wherein C1 is illustrated as a saw blade position raising control switch, C2 is illustrated as a blade position lowering control switch, and a switch for controlling the swing control mechanism 22 of the saw blade 2 with respect to the tilt angle of the work surface 30 D, wherein Dr indicates a control switch in which the saw blade 2 is skewed to the left, and D2 indicates a control switch in which the saw blade 2 is skewed to the right. How to control the motor with a switch is known to those skilled in the art and will not be described here.

Claims

Rights request

A table saw (1) comprising a work table (11) having a work surface (30), a swing frame (33) pivotally coupled to the work table, and a saw machine (2, ) coupled to the swing frame, a saw blade (2) mounted on the saw, a first motor (4) that drives the saw blade (2) to rotate, and a positioning mechanism for controlling movement of the saw machine (2') relative to the table (11) (21, 2, 22), characterized in that: the positioning mechanism comprises at least one second motor (6, 16), and a transmission mechanism (7, 8, 18) driven by the second motor (6, 16) 19), the transmission mechanism is connected to the saw machine (2'), and the second motor (6, 16) drives the saw machine (2') through the transmission mechanism (7, 8, 18, 19). The saw (2, ) is displaced relative to the working surface (30).

2. A table saw according to claim 1, characterized in that said second motor (6, 6', 16) is a common drive motor.

3. A table saw according to claim 1, wherein: said second motor (6, 6', 16) is provided with a switch control mechanism (20) for controlling displacement of the saw blade relative to the table (11) .

The table saw according to claim 1, characterized in that said positioning mechanism (21, 2, 22) comprises a first positioning mechanism (22), said first positioning mechanism (22) comprising said a second motor (6, 6', 16) and a transmission mechanism (7, 8, 18, 19) driven by the second motor (6, 16), wherein the second motor is a swing motor (16) It is connected to the swing frame (33) and is provided with a motor output shaft (18); the transmission mechanism (7, 8, 18, 19) includes an output shaft disposed on the swing motor

(18) an upper gear (18a) and a bracket (19) connected to the table (11), the bracket (19) is provided with a ring gear (19a), the gear and the ring gear ( 19a) Engaged.

The table saw according to claim 4, wherein: the saw (2) is fixedly coupled to the swing frame (33) such that the swing motor (16) drives the gear (18a) and the support The ring gear (19a) meshes and rotates, thereby causing the swing frame (33) to deflect relative to the table (11), thereby making the saw blade (2) mounted on the saw (2') angle with respect to the working surface (30) Displacement.

The table saw according to claim 1, wherein: the positioning mechanism (21, 21, 22, ) comprises a second positioning mechanism (21), and the second motor (6, 6, , · 16) is the lifting motor (6), the second positioning machine comprises a lifting motor (6) connected to the swing frame (33), and a nut (8) screwed to the output shaft (7) of the lifting motor, sliding connection The support plate (9) of the swing frame (33) is disposed on the engaging member (14) of the support plate (9), and the support plate engaging member (14) is engaged with the nut (8). 7. The table saw according to claim 6, wherein: the saw (2') is fixedly coupled to the support plate (9), and the lifting motor (6) is rotationally driven to urge the nut (8) along The lifting electric ft output shaft (7) slides, and the supporting plate engaging member (14) engaged with the nut (8) drives the supporting plate (9) to rise and lower relative to the saw frame (33) to be mounted on the sawing machine (2) The saw blade (2) of ' ) produces a linear displacement relative to the working surface (30).

The table saw according to claim 1, wherein: the positioning mechanism (2, 21, 22, ) comprises a second positioning mechanism (2Γ), and the second motor (6, 6', 16) for the lifting motor (6'), the second positioning mechanism (2) comprises a lifting motor connected to the saw frame (33)

(6'), a gear (8') disposed at an end of the output shaft of the lift motor (6, ), and a swing plate (9') pivotally coupled to the swing frame (33), the saw machine (2 , fixedly connected to the swinging plate (9, ), the swinging plate (9, ) is provided with a ring gear (19b), the pinion gear (8') and the ring gear

(19b) Engage.

9. The table saw according to claim 8, wherein: the lifting motor (6') is rotationally driven to cause the gear (18b) to mesh with the ring gear (19b), and the swinging plate (9') is opposite The swing frame (33) produces a pivotal rotation.

10. A table saw according to claim 9, characterized in that the oscillating plate (9') is pivoted relative to the oscillating frame (33) so that the saw blade (2) mounted on the saw (2') is opposite The working surface (30) of the table (11) produces a linear displacement in the vertical direction. ―