A comprehensive testing device and method for orthogonality and intersection of a multi-axis rotary table

Abstract

This invention belongs to the technical field of turntable testing devices, and particularly relates to a comprehensive testing device and method for the orthogonality and intersection of a multi-axis turntable. The comprehensive testing device includes a support for mounting the testing device; a laser interferometer is mounted on the top of the support; and a vibration damping assembly includes a mounting plate, a fixed plate, a fixing ring, a vibration damping rubber ring, a vibration damping mechanism, and a limiting mechanism. Both the mounting plate and the fixed plate are circular. By incorporating a vibration damping mechanism, during the use of the laser interferometer, when vibration is transmitted upwards through the support, the vibration cannot be directly transmitted to the laser interferometer located on top of the fixed plate because the fixed plate does not directly contact the mounting plate or the movable plate. However, when the vibration is transmitted to the vibration damping rubber ring, the ring's elasticity absorbs the vibration, thus protecting the laser interferometer from the influence of external vibrations and ensuring the detection accuracy of the laser interferometer.

Description

Technical Field

[0001] This invention belongs to the technical field of turntable testing devices, and particularly relates to a comprehensive testing device and method for the orthogonality and intersection of a multi-axis turntable. Background Technology

[0002] The orthogonality (perpendicular accuracy between the rotation axes) and intersection (accuracy of the intersection points of the rotation axis axes) of a multi-axis rotary table are the core indicators that determine its motion accuracy and positioning accuracy, directly affecting the quality of machining, measurement, or testing tasks. In order to ensure the working accuracy of the multi-axis rotary table, it is necessary to test the multi-axis rotary table using testing equipment such as a laser interferometer after it has been used for a period of time.

[0003] Because laser interferometers are precision instruments, their detection errors are generally small. Therefore, it is necessary to eliminate interference from external factors such as temperature, vibration, and dust impurities to achieve more accurate testing operations. However, existing laser interferometers, lacking suitable vibration damping devices and typically operating in workshop environments, are easily affected by vibrations from other machines, leading to detection errors.

[0004] Therefore, it is necessary to invent a comprehensive testing device and method for the orthogonality and intersection of a multi-axis rotary table to solve the above problems. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a comprehensive testing device and method for the orthogonality and intersection of a multi-axis rotary table, thereby resolving the issues raised in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a multi-axis rotary table orthogonality and intersection comprehensive testing device, comprising:

[0007] A bracket for mounting the testing equipment;

[0008] A laser interferometer is mounted on the top of the support.

[0009] The vibration damping assembly includes a mounting plate, a fixed plate, a fixing ring, a vibration damping rubber ring, a vibration damping mechanism, and a limiting mechanism. Both the mounting plate and the fixed plate are circular. The mounting plate is horizontally fixed to the top of the bracket, and the fixed plate is horizontally positioned on top of the mounting plate. The laser interferometer is detachably connected to the top of the fixed plate. The fixing ring is sleeved on the outside of the fixed plate. The vibration damping rubber ring is connected between the fixing ring and the mounting plate to buffer vibrations experienced by the laser interferometer. The vibration damping mechanism is positioned between the mounting plate and the fixed plate to prevent external vibrations from interfering with the laser interferometer during use. The limiting mechanism is positioned between the fixing ring and the mounting plate to restrict the vertical movement trajectory of the laser interferometer.

[0010] Furthermore, the vibration damping mechanism includes:

[0011] A movable plate is rotatably mounted on top of the mounting plate, and the top surface of the movable plate is flush with the top surface of the mounting plate;

[0012] The first magnetic block, there are multiple first magnetic blocks, and the multiple first magnetic blocks are evenly distributed in a ring on the top of the movable disk, and the top surface of the first magnetic block is flush with the top surface of the movable disk;

[0013] The second magnetic block, the number of which is the same as the number of the first magnetic block, is evenly distributed in a ring at the bottom of the fixed disk, and the bottom surface of the second magnetic block is flush with the bottom of the fixed disk;

[0014] A support member, connected to the top surface of the movable disk, is used to reduce the friction between the movable disk and the fixed disk when the movable disk rotates relative to the fixed disk.

[0015] An adjusting element is provided on the side of the movable disc to drive the movable disc to rotate.

[0016] Furthermore, the support member includes:

[0017] Support columns, wherein there are multiple support columns, which are evenly distributed in a ring, and the support columns are vertically slidably inserted into the top of the movable disk;

[0018] A support spring is fixedly connected to the bottom of the support column, and the bottom end of the support spring is fixedly connected to the bottom of the movable plate.

[0019] A ball bearing is rotatably mounted on the top of the support column, and the ball bearing is covered with vibration-damping rubber.

[0020] A positioning block is fixedly connected to the bottom of the support column. The positioning block is located inside the support spring, and the height of the positioning block is greater than the maximum compression of the support spring.

[0021] Furthermore, the adjusting member includes:

[0022] An adjusting rod is horizontally and vertically connected to the side of the movable plate. An arc-shaped adjusting hole is horizontally opened on the side of the mounting plate opposite to the adjusting rod, and the adjusting rod is inserted through the adjusting hole.

[0023] A locking nut, threaded onto the free end of the adjusting rod, is used to lock the position of the adjusting rod after it has been moved.

[0024] Furthermore, the limiting mechanism includes:

[0025] The insert rods are multiple in number and are evenly distributed in a ring. The insert rods are vertically fixed to the bottom of the fixing ring and are located in the inner area of ​​the vibration damping rubber ring.

[0026] The sleeves correspond one-to-one with the number of the inserts. The sleeves are fixedly connected to the top of the mounting plate, and multiple sleeves are slidably fitted onto the bottom ends of multiple inserts.

[0027] Furthermore, a groove is formed at the center of the top of the movable disc, and a locking component is disposed within the groove. The locking component includes:

[0028] A locking ring is horizontally positioned in the groove, and the top of the locking ring is fixedly connected to the bottom of the fixing plate by two fixing blocks;

[0029] The top block, of which there are two, is arranged alternately with two fixing blocks, and the top block is fixedly connected to the top of the locking ring;

[0030] The telescopic rod is vertically and fixedly connected to the center of the inner wall at the bottom of the groove;

[0031] A tension spring is sleeved on the telescopic rod, and both ends of the tension spring are fixedly connected to the telescopic rod near its ends.

[0032] The locking rod is horizontally fixed to the top of the telescopic rod, with its two ends located between the two top blocks and the two fixed blocks, respectively.

[0033] Furthermore, the top block includes a horizontal section and an inclined section. The inclined section is directly opposite the end of the locking rod, and the two locking rods are rotationally symmetrical about the axis of the movable disc. The horizontal section and the inclined section are smoothly connected together, and the top of the horizontal section is provided with an arc-shaped groove that matches the locking rod.

[0034] Furthermore, an anti-slip rubber ring is fixedly connected to the outer edge of the adjustment hole to increase the friction between the locking nut and the mounting plate.

[0035] Furthermore, it also includes an automatic precision turntable and an angle interferometer used in conjunction with the laser interferometer. The automatic precision turntable is mounted on the multi-axis turntable to be tested, and the angle interferometer is positioned between the automatic precision turntable and the laser interferometer.

[0036] This invention also provides a method for using a multi-axis rotary table orthogonality and intersection comprehensive testing device, comprising the following steps:

[0037] Step 1: Install the automatic precision rotary table onto the multi-axis rotary table using the chuck on the multi-axis rotary table;

[0038] Step 2: Install the angle interferometer on the front of the multi-axis turntable and adjust the light transmission angle between the angle interferometer and the automatic precision turntable;

[0039] Step 3: Set up the bracket, install the laser interferometer on the top of the bracket, and adjust the light transmission angle between the laser interferometer and the angle interferometer. After adjustment, rotate the movable disk by moving the adjustment rod, so that the first magnetic block on the movable disk can generate a repulsive force on the second magnetic block on the fixed disk, thereby making the laser interferometer suspend in the air.

[0040] Step 4: After the movable plate is adjusted, connect the laser interferometer to the computer, and then start the laser interferometer, multi-axis turntable and automatic precision turntable to automatically complete the comprehensive test operation of the orthogonality and intersection of the multi-axis turntable.

[0041] The technical effects and advantages of this invention are as follows:

[0042] 1. This invention incorporates a vibration damping mechanism. During the use of the laser interferometer, when vibrations from the external environment are transmitted upwards through the support, the vibrations cannot be directly transmitted to the laser interferometer located on top of the fixed plate because the fixed plate does not directly contact the mounting plate or the movable plate. However, when the vibrations are transmitted to the damping rubber ring, the ring itself is elastic and can absorb the vibrations, thereby protecting the laser interferometer from the influence of external vibrations and ensuring the detection accuracy of the laser interferometer.

[0043] 2. This invention incorporates a locking component. After the laser interferometer is no longer in use, the locking lever, driven by the movement of the movable disk via the adjustment lever, gradually presses the locking lever against the two top blocks. This, combined with the attraction between the first and second magnetic blocks, ensures that the fixed disk is firmly attached to the ball bearings on the movable disk. This prevents the fixed disk from shaking when the laser interferometer is not in use, thus ensuring that the internal components of the laser interferometer are not damaged by random shaking. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0045] Figure 2 This is a three-dimensional schematic diagram of the laser interferometer, adjustment components, and mounting plate in this invention;

[0046] Figure 3 This is a three-dimensional sectional view of the mounting plate, fixing ring, and fixing plate structures in this invention;

[0047] Figure 4 This is a three-dimensional schematic diagram of the structure of the fixed disk, fixed ring, locking ring and top block in this invention;

[0048] Figure 5 This is a three-dimensional schematic diagram of the structure of the mounting disk, movable disk, adjusting component, and first magnetic block in this invention;

[0049] Figure 6 This is a three-dimensional sectional view of the movable disc in this invention;

[0050] Figure 7 This is a three-dimensional schematic diagram of the locking component in this invention;

[0051] Figure 8 This is a three-dimensional schematic diagram of the support component in this invention.

[0052] In the diagram: 1. Bracket; 2. Laser interferometer; 3. Mounting plate; 4. Fixing plate; 5. Fixing ring; 6. Vibration damping rubber ring; 7. Movable plate; 8. First magnetic block; 9. Second magnetic block; 10. Support column; 11. Support spring; 12. Ball bearing; 13. Positioning block; 14. Adjusting rod; 15. Locking nut; 16. Insert rod; 17. Sleeve; 18. Locking ring; 19. Fixing block; 20. Top block; 21. Telescopic rod; 22. Tension spring; 23. Locking rod; 24. Arc-shaped groove; 25. Anti-slip rubber ring; 26. Automatic precision turntable; 27. Angle interferometer; 28. Multi-axis turntable. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0054] This invention provides, for example Figures 1 to 8 The multi-axis turntable orthogonality and intersection comprehensive testing device shown includes: a support 1, a laser interferometer 2, and a vibration damping assembly. The support 1 is used to install the testing device; the laser interferometer 2 is set at the top of the support 1; the vibration damping assembly includes a mounting plate 3, a fixed plate 4, a fixing ring 5, a vibration damping rubber ring 6, a vibration damping mechanism, and a limiting mechanism. The mounting plate 3 and the fixed plate 4 are both circular in shape. The mounting plate 3 is horizontally fixed to the top of the support 1, and the fixed plate 4 is horizontally set at the top of the mounting plate 3. The laser interferometer 2 is detachably connected to the top of the fixed plate 4. The fixing ring 5 is sleeved on the outside of the fixed plate 4. The vibration damping rubber ring 6 is connected between the fixing ring 5 and the mounting plate 3 to buffer the vibration received by the laser interferometer 2. The vibration damping mechanism is set between the mounting plate 3 and the fixed plate 4 to prevent external vibrations from interfering with the laser interferometer 2 during use. The limiting mechanism is set between the fixing ring 5 and the mounting plate 3 to limit the vertical movement trajectory of the laser interferometer 2.

[0055] It also includes an automatic precision turntable 26 and an angle interferometer 27 used in conjunction with the laser interferometer 2. The automatic precision turntable 26 is mounted on the multi-axis turntable 28 to be tested, and the angle interferometer 27 is positioned between the automatic precision turntable 26 and the laser interferometer 2.

[0056] During testing, the automatic precision turntable 26 is first mounted on the multi-axis turntable 28 via a chuck. Then, the angle interferometer 27 is installed on the front of the multi-axis turntable 28, and the light transmission angle between the angle interferometer 27 and the automatic precision turntable 26 is adjusted. The bracket 1 is then set up, and the laser interferometer 2 is mounted on top of the bracket 1. The light transmission angle between the laser interferometer 2 and the angle interferometer 27 is adjusted. After adjustment, the vibration damping mechanism is adjusted so that the laser interferometer 2, located on top of the fixed plate 4, can operate within the vibration damping mechanism and... With the cooperation of the limiting mechanism, the laser interferometer 2 remains suspended. Thus, during the use of the laser interferometer 2, when vibrations from the external environment are transmitted upward through the bracket 1, the vibrations cannot be directly transmitted to the laser interferometer 2 located on top of the fixed plate 4 because the fixed plate 4 does not directly contact the mounting plate 3 and the movable plate 7. When the vibrations are transmitted to the damping rubber ring 6, the damping rubber ring 6 itself is elastic and can absorb the vibrations, thereby protecting the laser interferometer 2 from the influence of external vibrations and ensuring the detection accuracy of the laser interferometer 2.

[0057] like Figures 2 to 6As shown, the vibration damping mechanism includes: a movable disk 7, a first magnetic block 8, a second magnetic block 9, a support member, and an adjusting member. The movable disk 7 is rotatably mounted on the top of the mounting disk 3, and the top surface of the movable disk 7 is flush with the top surface of the mounting disk 3. There are multiple first magnetic blocks 8, which are evenly distributed in a ring on the top of the movable disk 7, and the top surface of the first magnetic blocks 8 is flush with the top surface of the movable disk 7. The number of second magnetic blocks 9 is the same as the number of first magnetic blocks 8, which are evenly distributed in a ring on the bottom of the fixed disk 4, and the bottom surface of the second magnetic blocks 9 is flush with the bottom of the fixed disk 4. The magnetic poles on the same side of two adjacent first magnetic blocks 8 and the magnetic poles on the same side of two adjacent second magnetic blocks 9 are designed to be opposite. When the laser interferometer 2 is in working state, the magnetic poles between the first magnetic blocks 8 and the second magnetic blocks 9 facing each other are the same, and the repulsive force generated between the multiple first magnetic blocks 8 and the second magnetic blocks 9 at this time is greater than the gravity of the laser interferometer 2. When the laser interferometer 2 is not in working state, the magnetic poles between the first magnetic blocks 8 and the second magnetic blocks 9 facing each other are opposite.

[0058] The support is connected to the top surface of the movable disk 7 and is used to reduce the friction between the movable disk 7 and the fixed disk 4 when the movable disk 7 rotates relative to the fixed disk 4; the adjusting component is provided on the side of the movable disk 7 and is used to drive the movable disk 7 to rotate.

[0059] The adjusting components include: an adjusting rod 14 and a locking nut 15. The adjusting rod 14 is horizontally and vertically connected to the side of the movable plate 7. An arc-shaped adjusting hole is horizontally opened on the side of the mounting plate 3 opposite to the adjusting rod 14, and the adjusting rod 14 is inserted through the adjusting hole. The locking nut 15 is threaded onto the free end of the adjusting rod 14 and is used to lock the position of the adjusting rod 14 after it has moved. An anti-slip rubber ring 25 is fixedly connected to the outer edge of the adjusting hole to increase the friction between the locking nut 15 and the mounting plate 3.

[0060] The support components include: support columns 10, support springs 11, ball bearings 12, and positioning blocks 13. Multiple support columns 10 are arranged in a uniform ring shape and are vertically slidably inserted into the top of the movable disk 7. The support springs 11 are fixedly connected to the bottom of the support columns 10, and the bottom end of the support springs 11 is fixedly connected to the bottom of the movable disk 7. The ball bearings 12 are rotatably mounted on the top of the support columns 10, and the ball bearings 12 are covered with damping rubber. The positioning blocks 13 are fixedly connected to the bottom of the support columns 10, located inside the support springs 11, and the height of the positioning blocks 13 is greater than the maximum compression of the support springs 11.

[0061] The limiting mechanism includes: insert rods 16 and sleeves 17. There are multiple insert rods 16, which are evenly distributed in a ring. The insert rods 16 are vertically fixed to the bottom of the fixing ring 5 and are located in the inner area of ​​the vibration damping rubber ring 6. The number of sleeves 17 corresponds one-to-one with the number of insert rods 16. The sleeves 17 are fixedly connected to the top of the mounting plate 3, and multiple sleeves 17 are slidably sleeved on the bottom ends of multiple insert rods 16.

[0062] During the use of the laser interferometer 2, the repulsive force generated between the first magnetic block 8 and the second magnetic block 9 allows the fixed disk 4 to remain separated from the movable disk 7 and to be suspended in the air under the vertical restriction of the insertion rod 16 and the sleeve 17. At this time, the ball bearing 12 at the top of the support column 10 can also remain separated from the fixed disk 4, so as not to affect the fixed disk 4. During the use of the laser interferometer 2, when the vibration of the external environment is transmitted upward through the bracket 1, when the vibration is transmitted to the mounting disk 3, since the fixed disk 4 is not in direct contact with the mounting disk 3 and the movable disk 7, the vibration cannot be directly transmitted to the laser interferometer 2 located on the top of the fixed disk 4. When the vibration is transmitted to the damping rubber ring 6, since the damping rubber ring 6 itself is elastic, it can absorb the vibration, thereby protecting the laser interferometer 2 from the influence of external vibration and ensuring the detection accuracy of the laser interferometer 2.

[0063] After the laser interferometer 2 is used, first loosen the locking nut 15, then rotate the movable disk 7 by moving the adjusting rod 14. At this time, the first magnetic block 8 on the movable disk 7 can also rotate with the movable disk 7. When the adjusting rod 14 moves to the maximum distance along the adjusting hole, tighten the locking nut 15 to lock the adjusting rod 14. At this time, the multiple first magnetic blocks 8 on the movable disk 7 and the multiple second magnetic blocks 9 on the fixed disk 4 can be aligned one by one, and their magnetic poles are opposite. Therefore, the first magnetic block 8 can generate an attractive force on the second magnetic block 9. At this time, the fixed disk 4... Under the attraction between the first magnetic block 8 and the second magnetic block 9, it can approach the fixed disk 4. During this process, the damping rubber ring 6 can be slightly compressed by the fixing ring 5. When the fixed disk 4 contacts the ball 12 at the top of the support column 10, the fixed disk 4 can exert pressure on the support column 10 through the ball 12, thereby compressing the support spring 11. As the support spring 11 is compressed, the impact force generated when the fixed disk 4 collides with the ball 12 can be converted into the elastic potential energy of the support spring 11, thereby reducing the collision force between the fixed disk 4 and the ball 12 under the attraction.

[0064] As the support spring 11 is compressed, the positioning block 13 can contact the interior of the movable disk 7, thereby supporting the support spring 11, preventing it from being over-compressed, and ensuring its normal use. When the support spring 11 is compressed to its maximum value, the distance between the fixed disk 4 and the movable disk 7 also stops changing. At this time, the fixed disk 4 can remain in close contact with the ball bearing 12 on the support column 10 under the attraction between the first magnetic block 8 and the second magnetic block 9, thereby preventing the fixed disk 4 and the movable disk 7 from shaking when the laser interferometer 2 is not in use, and ensuring that the internal components of the laser interferometer 2 will not be damaged due to random shaking.

[0065] When the laser interferometer 2 is used again, as the adjusting rod 14 drives the movable disk 7 to rotate, the ball bearing 12 at the top of the support column 10 can roll along the bottom surface of the fixed disk 4, thereby reducing the friction force on the movable disk 7 when it rotates. When the adjusting rod 14 moves in the opposite direction along the adjusting hole to the maximum distance, the multiple first magnetic blocks 8 on the movable disk 7 and the multiple second magnetic blocks 9 on the fixed disk 4 can maintain the same pole relative to each other. At this time, the fixed disk 4 can be separated again under the action of the repulsive force between the first magnetic blocks 8 and the second magnetic blocks 9.

[0066] like Figures 3 to 7 As shown, a groove is provided at the center of the top of the movable disk 7, and a locking assembly is provided in the groove. The locking assembly includes: a locking ring 18, a top block 20, a telescopic rod 21, a tension spring 22, and a locking rod 23. The locking ring 18 is horizontally disposed in the groove, and the top of the locking ring 18 is fixedly connected to the bottom of the fixed disk 4 by two fixing blocks 19. There are two top blocks 20, which are alternately distributed with the two fixing blocks 19. The top blocks 20 are fixedly connected to the top of the locking ring 18. The telescopic rod 21 is vertically fixedly connected to the center of the inner wall of the bottom of the groove. The tension spring 22 is sleeved on the telescopic rod 21, and the two ends of the tension spring 22 are fixedly connected to the telescopic rod 21 near the two ends. The locking rod 23 is horizontally fixedly connected to the top of the telescopic rod 21, and the two ends of the locking rod 23 are located between the two top blocks 20 and the two fixing blocks 19.

[0067] The top block 20 includes a horizontal section and an inclined section. The inclined section is directly opposite the end of the locking rod 23, and the two locking rods 23 are rotationally symmetrical about the axis of the movable disk 7. The horizontal section and the inclined section are smoothly connected together, and the top of the horizontal section is provided with an arc-shaped groove 24 that matches the locking rod 23.

[0068] By incorporating a locking mechanism, during the use of the laser interferometer 2, both ends of the locking rod 23 can remain separated from the top block 20 and the locking ring 18, thus ensuring that the locking rod 23 and the locking ring 18 do not affect the vibration damping mechanism. After the laser interferometer 2 is no longer in use, the movable disk 7 is rotated by turning the adjusting rod 14, causing the telescopic rod 21 and the locking rod 23 to rotate under the drive of the movable disk 7. As the locking rod 23 rotates, both ends of the locking rod 23 gradually approach the inclined sections of the two top blocks 20. When both ends of the locking rod 23 contact the inclined ends of the two top blocks 20, the locking rod 23 generates a downward pulling force on the inclined sections of the top blocks 20, thereby allowing the fixed disk 4 and the laser interferometer 2 on its top to be pulled by this force. Under the action of the action, it moves downward. At the same time, the telescopic rod 21 and the tension spring 22 can be stretched by a part under the reaction force of the top block 20 on the locking rod 23. As the movable disk 7 continues to rotate, when the adjusting rod 14 moves along the adjusting hole to the maximum distance, the multiple first magnetic blocks 8 on the movable disk 7 and the multiple second magnetic blocks 9 on the fixed disk 4 can be aligned one by one, and at this time the magnetic poles of the two are opposite. Therefore, the first magnetic block 8 can generate an attraction force on the second magnetic block 9, which, together with the tension spring 22, pulls the fixed disk 4, so that the fixed disk 4 can be firmly attached to the ball 12, thereby avoiding the shaking between the fixed disk 4 and the movable disk 7 when the laser interferometer 2 is not in use, and ensuring that the internal components of the laser interferometer 2 will not be damaged due to random shaking.

[0069] At the same time, when the adjusting rod 14 moves along the adjusting hole to the maximum distance, the locking rod 23 can move into the arc-shaped groove 24 of the horizontal section of the top block 20 under the drive of the movable plate 7. Thus, through the limiting effect of the arc-shaped groove 24 on the locking rod 23, the top block 20 and the locking rod 23 can lock the fixed plate 4 and the movable plate 7 more stably.

[0070] This invention also provides a method for using a multi-axis rotary table orthogonality and intersection comprehensive testing device, comprising the following steps:

[0071] Step 1: Install the automatic precision rotary table 26 onto the multi-axis rotary table 28 using the chuck on the multi-axis rotary table 28;

[0072] Step 2: Install the angle interferometer 27 on the front side of the multi-axis turntable 28, and adjust the light transmission angle between the angle interferometer 27 and the automatic precision turntable 26;

[0073] Step 3: Set up the bracket 1, install the laser interferometer 2 on the top of the bracket 1, and adjust the light transmission angle between the laser interferometer 2 and the angle interferometer 27. After the adjustment is completed, drive the movable disk 7 to rotate by moving the adjustment rod 14, so that the first magnetic block 8 on the movable disk 7 can generate a repulsive force on the second magnetic block 9 on the fixed disk 4, thereby making the laser interferometer 2 suspended.

[0074] Step 4: After the movable disk 7 is adjusted, connect the laser interferometer 2 to the computer, and then start the laser interferometer 2, the multi-axis turntable 28 and the automatic precision turntable 26 to automatically complete the comprehensive test operation of the orthogonality and intersection of the multi-axis turntable 28.

[0075] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A comprehensive testing device for the orthogonality and intersection of a multi-axis rotary table, characterized in that, include: Bracket (1) is used to mount the test device; A laser interferometer (2) is mounted on the top of the support (1); The vibration damping assembly includes a mounting plate (3), a fixed plate (4), a fixing ring (5), a vibration damping rubber ring (6), a vibration damping mechanism, and a limiting mechanism. The mounting plate (3) and the fixed plate (4) are both circular in shape. The mounting plate (3) is horizontally fixed to the top of the bracket (1). The fixed plate (4) is horizontally positioned on the top of the mounting plate (3), and the laser interferometer (2) is detachably connected to the top of the fixed plate (4). The fixing ring (5) is sleeved on the outside of the fixed plate (4). The vibration damping rubber ring (6) is connected between the fixing ring (5) and the mounting plate (3) to buffer the vibrations received by the laser interferometer (2). The vibration damping mechanism is positioned between the mounting plate (3) and the fixed plate (4). The limiting mechanism is positioned between the fixing ring (5) and the mounting plate (3) to limit the vertical movement trajectory of the laser interferometer (2). The vibration damping mechanism includes: a movable disk (7), rotatably mounted on the top of the mounting disk (3), with the top surface of the movable disk (7) flush with the top surface of the mounting disk (3); a first magnetic block (8), the number of which is multiple, the multiple first magnetic blocks (8) being evenly distributed in a ring on the top of the movable disk (7), with the top surface of the first magnetic blocks (8) flush with the top surface of the movable disk (7); a second magnetic block (9), the number of which is the same as the number of the first magnetic blocks (8), the multiple second magnetic blocks (9) being evenly distributed in a ring on the bottom of the fixed disk (4), with the bottom surface of the second magnetic blocks (9) flush with the bottom of the fixed disk (4); a support member, connected to the top surface of the movable disk (7), used to reduce the friction between the movable disk (7) and the fixed disk (4) when the movable disk (7) and the fixed disk (4) rotate relative to each other; and an adjusting member, disposed on the side of the movable disk (7), used to drive the movable disk (7) to rotate. The limiting mechanism includes: a plug rod (16), the number of which is multiple, the plug rods (16) are evenly distributed in a ring, the plug rods (16) are vertically fixed to the bottom of the fixing ring (5), and the plug rods (16) are located in the inner area of ​​the damping rubber ring (6); a sleeve (17), the number of which corresponds one-to-one with the number of the plug rods (16), the sleeve (17) is fixedly connected to the top of the mounting plate (3), and multiple sleeves (17) are slidably sleeved on the bottom end of multiple plug rods (16).

2. The multi-axis rotary table orthogonality and intersection comprehensive testing device according to claim 1, characterized in that, The support member includes: Support column (10), there are multiple support columns (10), the multiple support columns (10) are evenly distributed in a ring, and the support columns (10) are vertically slidably inserted into the top of the movable disk (7); A support spring (11) is fixedly connected to the bottom of the support column (10), and the bottom end of the support spring (11) is fixedly connected to the bottom of the movable plate (7). The ball (12) is rotatably mounted on the top of the support column (10), and the ball (12) is wrapped with vibration damping rubber. The positioning block (13) is fixedly connected to the bottom of the support column (10). The positioning block (13) is located inside the support spring (11), and the height of the positioning block (13) is greater than the maximum compression of the support spring (11).

3. The multi-axis rotary table orthogonality and intersection comprehensive testing device according to claim 2, characterized in that, The adjusting element includes: Adjusting rod (14), the adjusting rod (14) is horizontally and vertically connected to the side of the movable plate (7), the side of the mounting plate (3) is horizontally provided with an arc-shaped adjusting hole at the position directly opposite to the adjusting rod (14), and the adjusting rod (14) is inserted through the adjusting hole; A locking nut (15) is threaded onto the free end of the adjusting rod (14) and is used to lock the position of the adjusting rod (14) after it has moved.

4. The multi-axis rotary table orthogonality and intersection comprehensive testing device according to claim 3, characterized in that, A groove is provided at the center of the top of the movable disk (7), and a locking component is provided in the groove. The locking component includes: A locking ring (18) is horizontally positioned in the groove, and the top of the locking ring (18) is fixedly connected to the bottom of the fixing plate (4) by two fixing blocks (19); Top block (20), there are two top blocks (20), the two top blocks (20) and two fixing blocks (19) are alternately distributed, and the top blocks (20) are fixedly connected to the top of the locking ring (18); The telescopic rod (21) is vertically fixed to the center of the inner wall at the bottom of the groove; A tension spring (22) is sleeved on the telescopic rod (21), and the two ends of the tension spring (22) are fixedly connected to the telescopic rod (21) near the two ends respectively; The locking rod (23) is horizontally fixed to the top of the telescopic rod (21), and the two ends of the locking rod (23) are located between the two top blocks (20) and the two fixing blocks (19).

5. The multi-axis rotary table orthogonality and intersection comprehensive testing device according to claim 4, characterized in that, The top block (20) includes a horizontal section and an inclined section. The inclined section is directly opposite the end of the locking rod (23), and the two locking rods (23) are rotationally symmetrical about the axis of the movable disk (7). The horizontal section and the inclined section are smoothly connected together, and the top of the horizontal section is provided with an arc-shaped groove (24) that matches the locking rod (23).

6. The multi-axis rotary table orthogonality and intersection comprehensive testing device according to claim 5, characterized in that, An anti-slip rubber ring (25) is fixedly connected to the outer edge of the adjustment hole to increase the friction between the locking nut (15) and the mounting plate (3).

7. The multi-axis rotary table orthogonality and intersection comprehensive testing device according to claim 6, characterized in that, It also includes an automatic precision turntable (26) and an angle interferometer (27) used in conjunction with the laser interferometer (2). The automatic precision turntable (26) is mounted on the multi-axis turntable (28) to be tested, and the angle interferometer (27) is disposed between the automatic precision turntable (26) and the laser interferometer (2).

8. A method of using the multi-axis rotary table orthogonality and intersection comprehensive testing device as described in claim 7, characterized in that, Includes the following steps: Step 1: Install the automatic precision rotary table (26) onto the multi-axis rotary table (28) using the chuck on the multi-axis rotary table (28); Step 2: Install the angle interferometer (27) on the front side of the multi-axis turntable (28) and adjust the light transmission angle between the angle interferometer (27) and the automatic precision turntable (26); Step 3: Set up the bracket (1), install the laser interferometer (2) on the top of the bracket (1), and adjust the light transmission angle between the laser interferometer (2) and the angle interferometer (27). After the adjustment is completed, drive the movable disk (7) to rotate by turning the adjustment rod (14), so that the first magnetic block (8) on the movable disk (7) can generate a repulsive force on the second magnetic block (9) on the fixed disk (4), thereby making the laser interferometer (2) suspended. Step 4: After the movable plate (7) is adjusted, connect the laser interferometer (2) to the computer, and then start the laser interferometer (2), multi-axis turntable (28) and automatic precision turntable (26) to automatically complete the comprehensive test operation of the orthogonality and intersection of the multi-axis turntable (28).

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