CN103389049A - Method for adjusting and detecting machine tool cradle-type composite rotary table axis space vertical intersection - Google Patents
Method for adjusting and detecting machine tool cradle-type composite rotary table axis space vertical intersection Download PDFInfo
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- CN103389049A CN103389049A CN2012101414787A CN201210141478A CN103389049A CN 103389049 A CN103389049 A CN 103389049A CN 2012101414787 A CN2012101414787 A CN 2012101414787A CN 201210141478 A CN201210141478 A CN 201210141478A CN 103389049 A CN103389049 A CN 103389049A
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Abstract
The invention provides a method for adjusting and detecting a machine tool cradle-type composite rotary table axis space vertical intersection, belongs to the field of precision measurement, and particularly relates to the field of mechanical geometry dimension error measurement. The method comprises the steps of utilizing a shaft laser alignment instrument or a laser, a two-dimensional position sensitivity detector and an optical element for adjusting and detecting the space vertical intersection of a shaft A and a shaft B of a machine tool cradle-type composite rotary table. According to the method, the optical method is utilized for replacing a tradition method for detecting the perpendicularity of a shaft A and a shaft B of a numerically-controlled machine tool by means of a central spindle, the adjustment and the detection of the perpendicularity of the space intersection of the two rotating shafts of the cradle-type working table in the manufacturing process of the machine tool are perfected, and the detection efficiency and detection accuracy are improved.
Description
Technical field
The invention belongs to the precision measurement field, particularly geometry of machinery scale error fields of measurement, be specifically related to adjustment and detection method that a kind of lathe cradle-type composite turntable axial space intersects vertically.
Background technology
Five-axis NC machine center comprises X, Y, three linear axes of Z and A, two revolving shaftes of B, and wherein A axle turntable rotates along transverse axis, and B axle turntable rotates along Z-axis.In numerically-controlled machine was made, the axis of A, B turntable needed space intersection and vertical.The mode of present many employings standard mandrel and dial gauge is measured, its adjust complicated, waste time and energy, and the error of mandrel is introduced directly into measuring error, accuracy of detection is not high.For example, in " three-surface static pressure closed guide rail high speed, the accurate digital control rotary table " development in " high-grade, digitally controlled machine tools and basic manufacturing equipment " scientific and technological great special item,, if adopt traditional adjustment detection method, just can not meet its technical requirement.
Summary of the invention
The object of the invention is to solve a difficult problem that exists in above-mentioned prior art, the adjustment and the detection method that provide a kind of lathe cradle-type composite turntable axial space to intersect vertically, utilize optical means to replace traditional mandrel detection numerically-controlled machine A, the method that the B axle is vertical, simplify the adjustment of cradle-type worktable two revolving shaft space intersections in the lathe manufacture process and the detection of verticality, improve detection efficiency and accuracy of detection.
The present invention is achieved by the following technical solutions: adjustment and detection method that a kind of lathe cradle-type composite turntable axial space intersects vertically, described lathe cradle-type composite turntable comprises vertical B axle turntable and the cradle of A1 axle turntable, A2 axle turntable and axis of rotation of axis of rotation level, the revolving shaft of described A1 axle turntable is defined as the A1 axle, the revolving shaft of A2 axle turntable is defined as the A2 axle, and described A1 axle and A2 axle are defined as the A axle together; The revolving shaft of described B axle turntable is defined as the B axle; Described A1 axle, A2 axle and B axle are all virtual axis;
Described method utilizes laser alignment instrument or laser instrument and two-dimensional position-sensitive detector and optical element to intersect and adjusts and detection the spatial vertical of the A axle of lathe cradle-type composite turntable and B axle.
The optical element that described method adopts comprises that high precision pentagonal prism or 90 ° turn to prism and Amici prism or semi-transparent semi-reflecting lens; The laser beam that described method emits described laser alignment instrument or laser instrument is as datum axis, and the laser beam of the laser beam that described laser alignment instrument or laser instrument are emitted after described high precision pentagonal prism or 90 ° turn to prism to turn back is as 90 ° of standard angle of relatively described datum axis.
Said method comprising the steps of:
(1), when cradle and B axle turntable not being loaded onto, use laser alignment instrument with A1 axle and A2 axle centering, both axis are located on the same line;
(2), the Laser emission end S of laser alignment instrument is arranged on A1 axle turntable center, the first receiving end M1 of laser alignment instrument is arranged on A2 axle turntable center, the second receiving end M2 of laser alignment instrument is arranged on the top of A axle, and Amici prism or semi-transparent semi-reflecting lens are fixed on light path between Laser emission end S and the first receiving end M1; Adjust the first receiving end M1 and the second receiving end M2 position until the light beam that Laser emission end S sends overlap fully with the axis of A1 axle and A2 axle;
(3) Laser emission end S is taken off from A1 axle turntable, and cradle and B axle turntable are loaded onto, then high precision pentagonal prism or 90 ° are turned to prism to be fixed in light path between A1 axle turntable and Amici prism or semi-transparent semi-reflecting lens, and making high precision pentagonal prism or 90 ° of plane of incidence aligning B axle centers that turn to prism, exit facet is aimed at Amici prism or semi-transparent semi-reflecting lens; Laser emission end S is arranged on B axle turntable center, and position and the attitude of then adjusting B axle turntable and Laser emission end S intersect vertically B axle and A axle.
The top that described the second receiving end M2 with laser alignment instrument in described step (2) is arranged on the A axle is achieved in that to be fixed in the second receiving end M2 on a two-dimentional adjustable translational platform, then described two-dimentional adjustable translational platform is fixed on A axle top by a mechanical connection plate.
Described adjustment the first receiving end M1 in described step (2) and the position of the second receiving end M2 until the light beam that Laser emission end S sends fully overlap specifically and comprise the following steps with the axis of A1 axle and A2 axle:
(A1) keep the first receiving end M1 and the second receiving end M2 motionless, the first receiving end M1 that shows on laser alignment instrument while reading in respectively the rotation of A1 axle turntable to 0 ° and 180 ° of two angle positions and the reading value of the second receiving end M2; Adjust respectively again the position of the first receiving end M1 and the second receiving end M2 in the first receiving end M1 and the mobile direction of the second receiving end M2 along the luminous point from Amici prism or semi-transparent semi-reflecting lens light beam out, reading value equal and opposite in direction while making 0 ° of its each comfortable A1 axle turntable and 180 ° of angle positions, opposite in sign;
(A2) keep the first receiving end M1 and the second receiving end M2 motionless, the first receiving end M1 that shows on the laser alignment instrument while reading in respectively the rotation of A1 axle turntable to 90 ° and 270 ° of two angle positions and the reading value of the second receiving end M2; Adjust respectively again the position of the first receiving end M1 and the second receiving end M2 in the first receiving end M1 and the mobile direction of the second receiving end M2 along the luminous point from Amici prism or semi-transparent semi-reflecting lens light beam out, reading value equal and opposite in direction while making 90 ° of its each comfortable A1 axle turntable and 270 ° of angle positions, opposite in sign;
(A3) repeating step (A1) and step (A2) several times, until the absolute value of the first receiving end M1 and the second receiving end M2 reading value separately is all equal when four angle positions of A1 axle turntable, this moment, the position of the first receiving end M1 and the second receiving end M2 was adjusted complete;
(A4), adjustment is positioned at the Laser emission end S on the A1 axle, position and the direction of its light beam that sends are changed, when the reading value of the first receiving end M1 and the second receiving end M2 is 0, the light beam that Laser emission end S sends overlaps fully with the A axle, at this time light beam is simultaneously by the first receiving end M1 and the second receiving end M2De center, and namely the light beam that sends of Laser emission end S overlaps fully with the axis of A1 axle and A2 axle; This step be for the position adjustment of verifying the first receiving end M1 and the second receiving end M2 whether correct, if can't make the reading value of the first receiving end M1 and the second receiving end M2 in this step is 0 simultaneously, so just illustrate that the position adjustment is incorrect, need to readjust, namely return to step (A1).
Described adjustment B axle turntable in described step (3) and the position of Laser emission end S and attitude intersect vertically B axle and A axle and specifically comprise the following steps:
(B1) B axle turntable is rotated successively to 0 °, 90 °, 180 ° and 270 ° of four angle positions, adjust respectively position and the attitude of Laser emission end S in each angle position, reading value while making each comfortable four angle position of the first receiving end M1 and the second receiving end M2 is a fixed value, the reading value of the first receiving end M1 and the second receiving end M2 can be not identical, this moment the light beam that Laser emission end S sends axis and the dead in line of B axle;
(B2) B axle turntable is rotated successively to 0 °, 90 °, 180 ° and 270 ° of four angle positions, adjust position and the attitude of B axle turntable in each angle position, the reading that makes the first receiving end M1 and the second receiving end M2 is 0 simultaneously, and this moment, the axis of the light beam that Laser emission end S sends was vertical and crossing with the axis of A axle.
Compared with prior art, the invention has the beneficial effects as follows: the inventive method utilizes optical means to replace traditional mandrel detection numerically-controlled machine A, the method that the B axle is vertical, improve the adjustment of cradle-type worktable two revolving shaft space intersections in the lathe manufacture process and the detection of verticality, improve detection efficiency and accuracy of detection.
Description of drawings
Fig. 1 is with the schematic diagram of A1 axle and A2 axle centering in the adjustment that intersects vertically of lathe cradle-type composite turntable axial space of the present invention and detection method.
Fig. 2 adjusts the schematic diagram of the first receiving end M1 and the second receiving end M2 in the adjustment that intersects vertically of lathe cradle-type composite turntable axial space of the present invention and detection method.
Fig. 3 adjusts B axle turntable and the position of transmitting terminal S and the schematic diagram of attitude in the adjustment that intersects vertically of lathe cradle-type composite turntable axial space of the present invention and detection method.
In figure, 1 is Laser emission end S, and 2 is Amici prism, and 3 is pentagonal prism, and 4 is the first receiving end M1, and 5 is the second receiving end M2.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail:
As shown in Figure 1, a kind of high-grade, digitally controlled machine tools cradle-type A, B axle composite turntable, comprise A1 axle turntable and the A2 axle turntable of axis of rotation level, the B axle turntable that axis of rotation is vertical, and cradle, one in A1 axle turntable and A2 axle turntable is the driving turntable, another is driven turntable.The cradle arm swings by driving the turntable drive.A1 axle turntable, A2 axle turntable and B axle turntable be all can continuous rotary worktable.
The inventive method mainly utilizes laser alignment instrument or laser instrument and Two-dimensional PSD and high precision pentagonal prism or 90 ° to turn to the fixed mechanism of the optical elements such as prism, Amici prism or semi-transparent semi-reflecting lens and the special-purpose chucking device of Laser emission end and receiving end, two-dimentional adjustable translational platform and optical element to realize A, the adjustment of two revolving shaft space intersections of B and the detection of verticality.The angular error of pentagonal prism affects verticality at 1: 1, so more high detection and the adjustment that more is conducive to verticality of precision., to adopt high precision pentagonal prism and Amici prism as example illustrates,, if use 90 ° to turn to prism and semi-transparent semi-reflecting lens, also adopt identical step and mounting means in following step.
Wherein, the high precision collimated light beam that the laser of laser alignment instrument or laser instrument provides (being laser beam) is as datum axis, and 90 ° of standard angle of high precision pentagonal prism generation relative datum axis, meet the verticality definition.
Below to adopt laser alignment instrument and high precision pentagonal prism specifically to adjust detection method as example explanation the present invention, what the laser alignment instrument in the present embodiment adopted is the Easy-laser laser alignment instrument that Sweden damalini company produces, also can adopt the centering instrument of other producer, other form, so long as based on laser, PSD principle can, laser is used to provide the straight line of standard, and PSD is used for obtaining the center of laser facula.
The inventive method comprises the following steps:
1, as shown in Figure 1, when cradle and B axle turntable not being loaded onto, use laser alignment instrument, (mode of specific implementation centering please refer to introduction and the instructions of laser alignment instrument with A1 axle and A2 axle centering to adopt " 9-12-3 " method or " any 3 points " method.), being located on the same straight line, A1 axle and A2 axle are defined as the A axle together.
2, utilize a Laser emission end S (1 in corresponding diagram) of laser alignment instrument and two Position-Sensitive Detectors (PSD) receiving end to adjust.Described PSD receiving end is correspondence 4 and 5 in the drawings, is respectively the first receiving end M1 and the second receiving end M2.Laser emission end S is installed in the center of A1 axle turntable (be installed and refer to roughly dead in line in center, subsequent step has illustrated concrete method of adjustment) with jig, and Amici prism 2 is fixed in light path; The first receiving end M1 (4 in corresponding diagram) is installed in the center of A2 axle turntable with jig, is used for receiving Amici prism 2 transmitted light out; The second receiving end M2 (5 in corresponding diagram) is fixed on two-dimentional adjustable translational platform, be used for receiving Amici prism 2 reflected light out, described two-dimentional adjustable translational platform is fixed on A axle top by a mechanical connection plate, it can carry out left and right on surface level and front and back (with respect to paper) is mobile, as shown in Figure 2.
3, keep the first receiving end M1 and the second receiving end M2 motionless, (laser alignment instrument can directly be measured this reading value of position coordinates of laser spots for the first receiving end M1 that shows on the laser alignment instrument while reading in respectively A1 axle turntable rotation to 0 ° and 180 ° of two angle positions and the reading value of the second receiving end M2.If adopt the mode of laser instrument+two PSD, the processes and displays circuit that increases in addition PSD gets final product); Along adjust the position of the first receiving end M1 and the second receiving end M2 in the first receiving end M1 and the mobile direction of the second receiving end M2 from the luminous point of Amici prism 2 light beam out, the reading value equal and opposite in direction while making its each comfortable 0 ° and 180 °, opposite in sign;
Keep the first receiving end M1 and the second receiving end M2 motionless, the first receiving end M1 that shows on the laser alignment instrument while reading in respectively A1 axle turntable rotation to 90 ° and 270 ° of two angle positions and the reading value of the second receiving end M2; Again along from the luminous point of Amici prism 2 light beam out, at the first receiving end M1 and the mobile direction of the second receiving end M2, adjusting the first receiving end M1 and the second receiving end M2 position, the reading value equal and opposite in direction while making its each comfortable 90 ° and 270 °, opposite in sign;
Repeat several times, until two receiving end M1 and M2 separately the absolute value of reading all equate (opposite in signs of the opposite in sign of 0 ° and 180 ° position, 90 ° and 270 ° positions) in four angle positions of A1 axle turntable, this moment, two receiving end M1 and the adjustment of M2 position were complete, can not move again.In this step, the reading value of two receiving end M1 and M2 does not need identical.When this step is adjusted, because of position and the direction to light beam S not, adjust, the light that S sends may not pass through M1 HeM2De center, so two reading values can be unequal, but does not affect adjustment.
4, for the position adjustment of verifying the first receiving end M1 and the second receiving end M2 whether correct, adjustment is positioned at the Laser emission end S on the A1 axle, its position of sending light beam and direction are changed, when the reading value of the first receiving end M1 and the second receiving end M2 is 0, the light beam that Laser emission end S sends overlaps fully with the A axle, at this time light beam is by the first receiving end M1 and the second receiving end M2De center, if can't make the reading value of the first receiving end M1 and the second receiving end M2 in this step is 0 simultaneously, so just illustrate that the position adjustment in the A2 step is incorrect, need to readjust, it is repeating step 3,
5, Laser emission end S is taken off from A1 axle turntable, and cradle and B axle turntable are loaded onto, B axle turntable is mounted on cradle.
6, as shown in Figure 3, high precision pentagonal prism 3 is fixed in light path between A1 axle turntable and Amici prism 2, and makes the plane of incidence of pentagonal prism 3 aim at B axle center, exit facet is aimed at Amici prism 2, i.e. the second receiving end M2 on the A2 axle.
7, Laser emission end S is installed in B axle turntable center, follow these steps to adjust respectively position and the attitude (position refers to the volume coordinate of object, and attitude refers to the rotation of each axle of Objects around A XYZ) of B axle turntable and Laser emission end S:
A) B axle turntable is rotated respectively to 0 °, 90 °, 180 ° and 270 ° of four angle positions, adjust position and the attitude of Laser emission end S by the mode of mobile and beat in each angle position, make the first receiving end M1 and the second receiving end M2 respectively the reading when four angle positions be a fixed value (M1 and M2 reading can be not identical), the beam axis that this moment, Laser emission end S sent overlaps with the B axle, and this step has guaranteed that the light beam that Laser emission end S sends overlaps with the axis of rotation of B axle turntable;
B) B axle turntable is rotated respectively to 0 °, 90 °, 180 ° and 270 ° of four angle positions, adjust position and the attitude of B axle turntable, the reading that makes the first receiving end M1 and the second receiving end M2 is 0 simultaneously, beam axis and A axle intersect vertical axis that this moment, Laser emission end S sent.,, because light beam intersects certainly by the right angle that pentagonal prism forms, so this step has guaranteed A axle and B axle, intersect vertically.
Need to prove, in described method, described the first receiving end M1 can not equate to the distance of Amici prism with the second receiving end M2 to the distance of Amici prism 2 or semi-transparent semi-reflecting lens, and both differences are larger, adjusts accuracy of detection higher.
Technique scheme is one embodiment of the present invention, for those skilled in the art, on the basis that the invention discloses application process and principle, be easy to make various types of improvement or distortion, and be not limited only to the described method of the above-mentioned embodiment of the present invention, therefore previously described mode is just preferred, and does not have restrictive meaning.
Claims (6)
1. adjustment and detection method that lathe cradle-type composite turntable axial space intersects vertically, described lathe cradle-type composite turntable comprises vertical B axle turntable and the cradle of A1 axle turntable, A2 axle turntable and axis of rotation of axis of rotation level, the revolving shaft of described A1 axle turntable is defined as the A1 axle, the revolving shaft of A2 axle turntable is defined as the A2 axle, and described A1 axle and A2 axle are defined as the A axle together; The revolving shaft of described B axle turntable is defined as the B axle; It is characterized in that:
Described method utilizes laser alignment instrument or laser instrument and two-dimensional position-sensitive detector and optical element to intersect and adjusts and detection the spatial vertical of the A axle of lathe cradle-type composite turntable and B axle.
2. the adjustment and the detection method that intersect vertically of lathe cradle-type composite turntable axial space according to claim 1 is characterized in that: the optical element that described method adopts comprises that high precision pentagonal prism or 90 ° turn to prism and Amici prism or semi-transparent semi-reflecting lens; The laser beam that described method emits described laser alignment instrument or laser instrument is as datum axis, and the laser beam of the laser beam that described laser alignment instrument or laser instrument are emitted after described high precision pentagonal prism or 90 ° turn to prism to turn back is as 90 ° of standard angle of relatively described datum axis.
3. the adjustment and the detection method that intersect vertically of lathe cradle-type composite turntable axial space according to claim 2 is characterized in that: said method comprising the steps of:
(1), when cradle and B axle turntable not being loaded onto, use laser alignment instrument with A1 axle and A2 axle centering, both axis are located on the same line;
(2), the Laser emission end S of laser alignment instrument is arranged on A1 axle turntable center, the first receiving end M1 of laser alignment instrument is arranged on A2 axle turntable center, the second receiving end M2 of laser alignment instrument is arranged on the top of A axle, and Amici prism or semi-transparent semi-reflecting lens are fixed on light path between Laser emission end S and the first receiving end M1; Adjust the first receiving end M1 and the second receiving end M2 position until the light beam that Laser emission end S sends overlap fully with the axis of A1 axle and A2 axle;
(3) Laser emission end S is taken off from A1 axle turntable, and cradle and B axle turntable are loaded onto, then high precision pentagonal prism or 90 ° are turned to prism to be fixed in light path between A1 axle turntable and Amici prism or semi-transparent semi-reflecting lens, and making high precision pentagonal prism or 90 ° of plane of incidence aligning B axle centers that turn to prism, exit facet is aimed at Amici prism or semi-transparent semi-reflecting lens; Laser emission end S is arranged on B axle turntable center, and position and the attitude of then adjusting B axle turntable and Laser emission end S intersect vertically B axle and A axle.
4. the adjustment and the detection method that intersect vertically of lathe cradle-type composite turntable axial space according to claim 3, it is characterized in that: the top that described the second receiving end M2 with laser alignment instrument in described step (2) is arranged on the A axle is achieved in that to be fixed in the second receiving end M2 on a two-dimentional adjustable translational platform, then described two-dimentional adjustable translational platform is fixed on A axle top by a mechanical connection plate.
5. the adjustment and the detection method that intersect vertically of lathe cradle-type composite turntable axial space according to claim 3 is characterized in that: described adjustment the first receiving end M1 in described step (2) and the position of the second receiving end M2 until the light beam that Laser emission end S sends fully overlap specifically and comprise the following steps with the axis of A1 axle and A2 axle:
(A1) keep the first receiving end M1 and the second receiving end M2 motionless, the first receiving end M1 that shows on laser alignment instrument while reading in respectively the rotation of A1 axle turntable to 0 ° and 180 ° of two angle positions and the reading value of the second receiving end M2; Adjust respectively again the position of the first receiving end M1 and the second receiving end M2 in the first receiving end M1 and the mobile direction of the second receiving end M2 along the luminous point from Amici prism or semi-transparent semi-reflecting lens light beam out, reading value equal and opposite in direction while making 0 ° of its each comfortable A1 axle turntable and 180 ° of angle positions, opposite in sign;
(A2) keep the first receiving end M1 and the second receiving end M2 motionless, the first receiving end M1 that shows on the laser alignment instrument while reading in respectively the rotation of A1 axle turntable to 90 ° and 270 ° of two angle positions and the reading value of the second receiving end M2; Adjust respectively again the position of the first receiving end M1 and the second receiving end M2 in the first receiving end M1 and the mobile direction of the second receiving end M2 along the luminous point from Amici prism or semi-transparent semi-reflecting lens light beam out, reading value equal and opposite in direction while making 90 ° of its each comfortable A1 axle turntable and 270 ° of angle positions, opposite in sign;
(A3) repeating step (A1) and step (A2) several times, until the absolute value of the first receiving end M1 and the second receiving end M2 reading value separately is all equal when four angle positions of A1 axle turntable, this moment, the position of the first receiving end M1 and the second receiving end M2 was adjusted complete;
(A4), adjustment is positioned at the Laser emission end S on the A1 axle, position and the direction of its light beam that sends are changed, when the reading value of the first receiving end M1 and the second receiving end M2 is 0, the light beam that Laser emission end S sends overlaps fully with the A axle, at this time light beam is simultaneously by the first receiving end M1 and the second receiving end M2De center, and namely the light beam that sends of Laser emission end S overlaps fully with the axis of A1 axle and A2 axle; If can't make the reading value of the first receiving end M1 and the second receiving end M2 in this step is 0 simultaneously, so just illustrate that the position adjustment is incorrect, return to step (A1).
6. the adjustment and the detection method that intersect vertically of lathe cradle-type composite turntable axial space according to claim 5, it is characterized in that: the described adjustment B axle turntable in described step (3) and the position of Laser emission end S and attitude intersect vertically B axle and A axle and specifically comprise the following steps:
(B1) B axle turntable is rotated successively to 0 °, 90 °, 180 ° and 270 ° of four angle positions, adjust respectively position and the attitude of Laser emission end S in each angle position, reading value while making each comfortable four angle position of the first receiving end M1 and the second receiving end M2 is a fixed value, the reading value of the first receiving end M1 and the second receiving end M2 can be not identical, this moment the light beam that Laser emission end S sends axis and the dead in line of B axle;
(B2) B axle turntable is rotated successively to 0 °, 90 °, 180 ° and 270 ° of four angle positions, adjust position and the attitude of B axle turntable in each angle position, the reading that makes the first receiving end M1 and the second receiving end M2 is 0 simultaneously, and this moment, the axis of the light beam that Laser emission end S sends was vertical and crossing with the axis of A axle.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210141478.7A CN103389049B (en) | 2012-05-08 | 2012-05-08 | The adjustment that lathe cradle-type composite turntable axial space intersects vertically and detection method |
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| CN201210141478.7A CN103389049B (en) | 2012-05-08 | 2012-05-08 | The adjustment that lathe cradle-type composite turntable axial space intersects vertically and detection method |
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Cited By (5)
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| CN106482667A (en) * | 2016-10-18 | 2017-03-08 | 国网北京市电力公司 | Detection means |
| CN111272078A (en) * | 2020-04-01 | 2020-06-12 | 江苏理工学院 | Position tolerance measurement method for reference hole of shaft automobile composite material molded part |
| CN111272076A (en) * | 2020-04-01 | 2020-06-12 | 江苏理工学院 | Method for measuring position tolerance of hole type automobile composite material molded part to reference shaft |
| CN111272077A (en) * | 2020-04-01 | 2020-06-12 | 江苏理工学院 | Method for measuring position tolerance of hole type automobile composite material molded part to reference hole |
| CN111272079A (en) * | 2020-04-01 | 2020-06-12 | 江苏理工学院 | Position tolerance measurement method for axis automobile composite material molded part to reference axis |
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| CN111272078A (en) * | 2020-04-01 | 2020-06-12 | 江苏理工学院 | Position tolerance measurement method for reference hole of shaft automobile composite material molded part |
| CN111272076A (en) * | 2020-04-01 | 2020-06-12 | 江苏理工学院 | Method for measuring position tolerance of hole type automobile composite material molded part to reference shaft |
| CN111272077A (en) * | 2020-04-01 | 2020-06-12 | 江苏理工学院 | Method for measuring position tolerance of hole type automobile composite material molded part to reference hole |
| CN111272079A (en) * | 2020-04-01 | 2020-06-12 | 江苏理工学院 | Position tolerance measurement method for axis automobile composite material molded part to reference axis |
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| CN103389049B (en) | 2016-03-02 |
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