Multi-axis turntable orthogonality and intersection comprehensive testing device and method

Abstract

The 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 degree of a multi-axis turntable, and the comprehensive testing device comprises a support which is used for installing the testing device; the laser interferometer is arranged at the top end of the bracket; the vibration reduction assembly comprises a mounting disc, a fixing disc, a fixing ring, a vibration reduction rubber ring, a vibration reduction mechanism and a limiting mechanism, and the mounting disc and the fixing disc are both circular. By arranging the vibration reduction mechanism, in the using process of the laser interferometer, when vibration is transmitted upwards through the support, due to the fact that the fixed disc is not in direct contact with the mounting disc and the movable disc, the vibration cannot be directly transmitted to the laser interferometer located at the top of the fixed disc, and when the vibration is transmitted to a vibration reduction rubber ring, the vibration reduction rubber ring is not in direct contact with the fixed disc. Due to the fact that the vibration reduction rubber ring has elasticity, vibration can be absorbed, the laser interferometer can be prevented from being affected by external vibration, and the detection precision of the laser interferometer is guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of turntable testing devices, and in particular relates to a device and method for comprehensively testing the orthogonality and intersection of a multi-axis turntable. Background Art

[0002] A multi-axis turntable's orthogonality (the vertical precision between its axes) and intersection (the accuracy of the intersection of its axes' axes' overlap) are key indicators of its motion precision and positioning accuracy, directly impacting the quality of machining, measurement, or testing tasks. To ensure its accuracy, it's essential to test it after a period of use using testing equipment such as a laser interferometer.

[0003] Because laser interferometers are precision instruments with generally small detection errors, they must eliminate interference from external factors such as temperature, vibration, and dust to achieve more accurate testing. However, existing laser interferometers lack suitable vibration damping devices, and the testing environment is typically within a workshop. Therefore, they are easily affected by vibrations generated by 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 turntable to solve the above problems. Summary of the Invention

[0005] In response to the above problems, the present invention provides a device and method for comprehensively testing the orthogonality and intersection of a multi-axis turntable to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a multi-axis turntable orthogonality and intersection comprehensive testing device, comprising: a bracket for mounting the test device; A laser interferometer is arranged on the top of the bracket; The vibration reduction assembly includes a mounting plate, a fixed plate, a fixed ring, a vibration-damping rubber ring, a vibration-damping mechanism and a limiting mechanism. The mounting plate and the fixed plate are both circular in shape. The mounting plate is horizontally fixedly connected to the top of the bracket. The fixed plate is horizontally arranged on the top of the mounting plate, and the laser interferometer is detachably connected to the top of the fixed plate. The fixed ring is sleeved on the outside of the fixed plate. The vibration-damping rubber ring is connected between the fixed ring and the mounting plate to buffer the vibration exerted on the laser interferometer. The vibration reduction mechanism is arranged between the mounting plate and the fixed plate to prevent external vibration from interfering with the laser interferometer when the laser interferometer is in use. The limiting mechanism is arranged between the fixed ring and the mounting plate to limit the motion trajectory of the laser interferometer in the vertical direction.

[0007] Furthermore, the vibration reduction mechanism includes: A movable plate is rotatably mounted on the top of the mounting plate, and the top surface of the movable plate is flush with the top surface of the mounting plate; a first magnetic block, wherein the number of the first magnetic blocks is multiple, the multiple first magnetic blocks are evenly distributed in an annular manner on the top of the movable disk, and the top surfaces of the first magnetic blocks are flush with the top surface of the movable disk; second magnetic blocks, wherein the number of the second magnetic blocks is the same as the number of the first magnetic blocks, the plurality of second magnetic blocks are evenly distributed in an annular manner on the bottom of the fixed disk, and the bottom surfaces of the second magnetic blocks are flush with the bottom of the fixed disk; a support member connected to the top surface of the movable disk, and used to reduce the friction between the movable disk and the fixed disk when the movable disk and the fixed disk rotate relative to each other; The adjusting member is arranged on the side of the movable disk and is used for driving the movable disk to rotate.

[0008] Furthermore, the support member includes: There are multiple support columns, each of which is evenly distributed in an annular shape and is vertically slidably plugged into the top of the movable disk; 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 disk; A ball bearing is rotatably mounted on the top of the support column, and the outside of the ball bearing is wrapped with vibration-damping rubber; A positioning block is fixedly connected to the bottom of the support column, the positioning block is located on the inner side of the support spring, and the height of the positioning block is greater than the maximum compression amount of the support spring.

[0009] Furthermore, the adjusting member includes: An adjusting rod is connected horizontally and vertically to the side of the movable plate, and an arc-shaped adjusting hole is horizontally opened on the side of the mounting plate at a position directly opposite to the adjusting rod, and the adjusting rod is inserted into the adjusting hole; A locking nut is threadedly sleeved on the free end of the adjusting rod and is used to lock the position of the adjusting rod after it moves.

[0010] Furthermore, the limiting mechanism includes: Insert rods, the number of which is multiple and the insert rods are evenly distributed in an annular shape. The insert rods are vertically fixedly connected to the bottom of the fixing ring and are located in the inner area of ​​the vibration-damping rubber ring; The number of the sleeves corresponds to the number of the insertion rods. The sleeves are fixedly connected to the top of the mounting plate, and the plurality of sleeves are slidably sleeved on the bottom ends of the plurality of insertion rods.

[0011] Furthermore, a groove is provided at the center of the top of the movable disk, and a locking assembly is provided in the groove, and the locking assembly includes: A locking ring is horizontally arranged in the groove, and the top of the locking ring is fixedly connected to the bottom of the fixed plate through two fixing blocks; There are two top blocks, the two top blocks and the two fixed blocks are alternately distributed, and the top blocks are fixedly connected to the top of the locking ring; A telescopic rod is vertically fixedly connected to the center of the inner wall of the bottom of the groove; A tension spring is sleeved on the telescopic rod, and both ends of the tension spring are fixedly connected to the positions of the telescopic rod near both ends respectively; The locking rod is horizontally fixedly connected to the top end of the telescopic rod, and both ends of the locking rod are respectively located between the two top blocks and the two fixed blocks.

[0012] Furthermore, the top block includes a horizontal section and an inclined section, the inclined section is opposite to the end of the locking rod, and the two locking rods are rotationally symmetrical about the axis of the movable disk, the horizontal section and the inclined section are smoothly connected together, and the top of the horizontal section is provided with an arc-shaped slot that matches the locking rod.

[0013] 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.

[0014] Furthermore, it also includes an automatic precision turntable and an angle interferometer used in conjunction with the laser interferometer. The automatic precision turntable is installed on the multi-axis turntable to be measured, and the angle interferometer is arranged between the automatic precision turntable and the laser interferometer.

[0015] The present invention also provides a method for using a multi-axis turntable orthogonality and intersection comprehensive testing device, comprising the following steps: Step 1: Install the automatic precision turntable on the multi-axis turntable through the chuck on the multi-axis turntable; Step 2: Install the angle interferometer on the front side of the multi-axis turntable and adjust the light transmission angle between the angle interferometer and the automatic precision turntable; 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 the adjustment is completed, turn the adjustment lever to drive the movable disk to rotate, 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 keeping the laser interferometer in a suspended state; Step 4: After the movable disk is adjusted, connect the laser interferometer to the computer, 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.

[0016] The technical effects and advantages of the present invention are as follows: 1. The present invention provides a vibration reduction mechanism. When the laser interferometer is in use, when vibrations in the external environment are transmitted upward through the bracket, the fixed plate is not in direct contact with the mounting plate or the movable plate. Therefore, the vibrations cannot be directly transmitted to the laser interferometer located on top of the fixed plate. However, when the vibrations are transmitted to the vibration-damping rubber ring, the elasticity of the vibration-damping rubber ring can absorb the vibrations, thereby protecting the laser interferometer from the influence of external vibrations and ensuring the detection accuracy of the laser interferometer. 2. The present invention is provided with a locking assembly. When the laser interferometer is not used, as the movable disk is rotated by toggling the adjusting rod, the locking rod can be gradually pressed together with the two top blocks under the drive of the movable disk, thereby cooperating with the suction force between the first magnetic block and the second magnetic block to enable the fixed disk to be firmly attached to the ball bearings on the movable disk, thereby avoiding shaking between the fixed disk and the movable disk when the laser interferometer is not in use, and ensuring that the internal components of the laser interferometer will not be damaged due to random shaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a three-dimensional schematic diagram of the structures of the laser interferometer, the adjustment member and the mounting plate in the present invention; Figure 3 It is a three-dimensional cross-sectional view of the structures such as the mounting plate, the fixing ring and the fixing plate in the present invention; Figure 4 It is a three-dimensional schematic diagram of the structures of the fixing plate, fixing ring, locking ring and top block in the present invention; Figure 5 It is a three-dimensional schematic diagram of the structures of the mounting plate, movable plate, adjusting member and first magnetic block in the present invention; Figure 6 It is a three-dimensional cross-sectional view of the movable disk of the present invention; Figure 7 is a three-dimensional schematic diagram of the locking assembly of the present invention; Figure 8 It is a three-dimensional schematic diagram of the support member in the present invention.

[0018] In the figure: 1. bracket; 2. laser interferometer; 3. mounting plate; 4. fixed plate; 5. fixed 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 slot; 25. anti-slip rubber ring; 26. automatic precision turntable; 27. angle interferometer; 28. multi-axis turntable. DETAILED DESCRIPTION

[0019] In order to make the purpose, 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.

[0020] The present invention provides Figures 1 to 8 A multi-axis turntable orthogonality and intersection comprehensive testing device shown includes: a bracket 1, a laser interferometer 2 and a vibration reduction assembly, the bracket 1 is used to install the test device; the laser interferometer 2 is arranged at the top of the bracket 1; the vibration reduction assembly includes a mounting plate 3, a fixed plate 4, a fixed ring 5, a vibration-damping rubber ring 6, a vibration reduction 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 fixedly connected to the top of the bracket 1, the fixed plate 4 is horizontally arranged 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 fixed ring 5 is sleeved on the outside of the fixed plate 4, the vibration-damping rubber ring 6 is connected between the fixed ring 5 and the mounting plate 3, and is used to buffer the vibration exerted on the laser interferometer 2, the vibration reduction mechanism is arranged between the mounting plate 3 and the fixed plate 4, and is used to prevent external vibration from interfering with the laser interferometer 2 when the laser interferometer 2 is in use, and the limiting mechanism is arranged between the fixed ring 5 and the mounting plate 3, and is used to limit the motion trajectory of the laser interferometer 2 in the vertical direction; 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 installed on a multi-axis turntable 28 to be measured, and the angle interferometer 27 is arranged between the automatic precision turntable 26 and the laser interferometer 2. During the inspection, the automatic precision turntable 26 is first installed on the multi-axis turntable 28 through the chuck on the multi-axis turntable 28, and then the angle interferometer 27 is installed on the front side 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 set up, and the laser interferometer 2 is installed on the top of the bracket 1. The light transmission angle between the laser interferometer 2 and the angle interferometer 27 is adjusted. After the adjustment is completed, the vibration reduction mechanism is adjusted so that the laser interferometer 2 located on the top of the fixed plate 4 can be between the vibration reduction mechanism and the angle interferometer 27. The limiting mechanism cooperates to maintain a suspended state, so that when the laser interferometer 2 is used, when the vibration in the external environment is transmitted upward through the bracket 1, since the fixed plate 4 is not in direct contact with the mounting plate 3 and the movable plate 7, the vibration cannot be directly transmitted to the laser interferometer 2 located on the top of the fixed plate 4. When the vibration is transmitted to the vibration-damping rubber ring 6, the vibration-damping rubber ring 6 itself has elasticity and can absorb the vibration, thereby protecting the laser interferometer 2 from the influence of external vibration, thereby ensuring the detection accuracy of the laser interferometer 2.

[0021] like Figures 2 to 6 As shown, the vibration reduction 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; the number of first magnetic blocks 8 is multiple, and multiple first magnetic blocks 8 are evenly distributed in an annular manner on the top of the movable disk 7, and the top surface of the first magnetic block 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, and multiple second magnetic blocks 9 are evenly distributed in an annular manner on the bottom of the fixed disk 4, and the bottom surface of the second magnetic block 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 both designed in opposite directions, and when the laser interferometer 2 is in a working state, the magnetic poles between the facing first magnetic blocks 8 and the second magnetic blocks 9 are the same, and at this time, the repulsive force generated between the multiple first magnetic blocks 8 and the second magnetic blocks 9 is greater than the gravity of the laser interferometer 2, and when the laser interferometer 2 is in a non-working state, the magnetic poles between the facing first magnetic blocks 8 and the second magnetic blocks 9 are opposite; The support member 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 and the fixed disk 4 rotate relative to each other; the adjustment member is provided on the side of the movable disk 7 and is used to drive the movable disk 7 to rotate; The adjustment member includes: an adjustment rod 14 and a locking nut 15. The adjustment rod 14 is horizontally and vertically connected to the side of the movable plate 7. An arc-shaped adjustment hole is horizontally opened on the side of the mounting plate 3 at a position directly opposite the adjustment rod 14, and the adjustment rod 14 is inserted into the adjustment hole; the locking nut 15 is threadedly sleeved on the free end of the adjustment rod 14 and is used to lock the position of the adjustment rod 14 after movement. A non-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. The support member includes: a support column 10, a support spring 11, a ball 12 and a positioning block 13. The number of support columns 10 is multiple, and the multiple support columns 10 are evenly distributed in an annular shape. The support column 10 is vertically slidably inserted into the top of the movable disk 7; the 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 disk 7; the ball 12 is rotatably mounted on the top of the support column 10, and the outside of 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 on the inner side of the support spring 11, and the height of the positioning block 13 is greater than the maximum compression amount of the support spring 11; The limiting mechanism includes: a plug rod 16 and a sleeve 17. The number of the plug rods 16 is multiple, and the plug rods 16 are evenly distributed in an annular shape. The plug rods 16 are vertically fixedly connected to the bottom of the fixing ring 5, and the plug rods 16 are located in the inner area of ​​the vibration-damping rubber ring 6. The number of sleeves 17 corresponds to the number of the plug rods 16. The sleeves 17 are fixedly connected to the top of the mounting plate 3, and the multiple sleeves 17 are slidably sleeved on the bottom ends of the multiple plug rods 16 one by one. During the use of the laser interferometer 2, the repulsive force generated between the first magnetic block 8 and the second magnetic block 9 can keep the fixed disk 4 separated from the movable disk 7 and keep it in a suspended state under the vertical restriction of the insertion rod 16 and the sleeve 17. At this time, the ball 12 at the top of the support column 10 can also keep 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 in 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 vibration-damping rubber ring 6, the vibration-damping rubber ring 6 itself has elasticity and can absorb the vibration, thereby protecting the laser interferometer 2 from the influence of external vibration, thereby ensuring the detection accuracy of the laser interferometer 2; When the laser interferometer 2 is finished using, first loosen the locking nut 15, then rotate the movable disk 7 by toggling 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 the magnetic poles of the two are opposite. Therefore, the first magnetic block 8 can generate suction to the second magnetic block 9. At this time, the fixed disk 4 It can approach the fixed disk 4 under the action of the suction force between the first magnetic block 8 and the second magnetic block 9. During this process, the vibration-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 generate 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 elastic potential energy of the support spring 11, thereby reducing the collision force between the fixed disk 4 and the ball 12 under the action of the suction force. As the support spring 11 is compressed, the positioning block 13 can contact the inside of the movable disk 7, thereby supporting the support spring 11, preventing the support spring 11 from being over-compressed, and ensuring the normal use of the support spring 11. When the support spring 11 is compressed to the 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 maintain close contact with the ball 12 on the support column 10 under the action of the suction force 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. When the laser interferometer 2 is used again, as the adjusting rod 14 drives the movable disk 7 to rotate, the ball 12 on the top of the support column 10 can roll against the bottom surface of the fixed disk 4, thereby reducing the friction force encountered by the movable disk 7 during rotation. 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 poles relative to each other. At this time, the fixed disk 4 can be kept separated again under the action of the repulsive force between the first magnetic blocks 8 and the second magnetic blocks 9.

[0022] like Figures 3 to 7As 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, which includes: a locking ring 18, a top block 20, a telescopic rod 21, a tensioning spring 22 and a locking rod 23; the locking ring 18 is horizontally arranged in the groove, and the top of the locking ring 18 is fixedly connected to the bottom of the fixed disk 4 through two fixing blocks 19; there are two top blocks 20, and the two top blocks 20 are alternately distributed with the two fixing blocks 19, and 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 tensioning spring 22 is sleeved on the telescopic rod 21, and the two ends of the tensioning spring 22 are respectively fixedly connected to the positions of 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 respectively located between the two top blocks 20 and the two fixing blocks 19; The top block 20 includes a horizontal section and an inclined section. The inclined section is opposite to the end of the locking rod 23. 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. The top of the horizontal section is provided with an arc-shaped slot 24 that matches the locking rod 23. By providing a locking assembly, during the use of the laser interferometer 2, both ends of the locking rod 23 can be kept separate from the top block 20 and the locking ring 18, thereby ensuring that the locking rod 23 and the locking ring 18 will not affect the vibration damping mechanism. After the use of the laser interferometer 2 is completed, as the movable disk 7 is rotated by toggling the adjusting rod 14, the telescopic rod 21 and the locking rod 23 can start to rotate under the drive of the movable disk 7, and as the locking rod 23 rotates, the two ends of the locking rod 23 can gradually approach the inclined sections of the two top blocks 20 respectively. When the two ends of the locking rod 23 contact the inclined ends of the two top blocks 20, the locking rod 23 can generate a downward pulling force on the inclined section of the top block 20, so that the fixed disk 4 and the laser interferometer 2 on top of it can be pulled under the pulling force. Under the action of , it moves downward. At the same time, the telescopic rod 21 and the tensioning spring 22 can be stretched 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 to the maximum distance along the adjusting hole, 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 suction force on the second magnetic block 9, and then cooperate with the tensioning spring 22 on the fixed disk 4, so that the fixed disk 4 can be firmly attached to the ball 12, thereby avoiding 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; At the same time, when the adjusting rod 14 moves to the maximum distance along the adjusting hole, the locking rod 23 can be moved to the arc groove 24 of the horizontal section of the top block 20 under the drive of the movable disk 7, so that the arc groove 24 restricts the locking rod 23, so that the top block 20 and the locking rod 23 can lock the fixed disk 4 and the movable disk 7 more stably.

[0023] The present invention also provides a method for using a multi-axis turntable orthogonality and intersection comprehensive testing device, comprising the following steps: Step 1: Install the automatic precision turntable 26 on the multi-axis turntable 28 through the chuck on the multi-axis turntable 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, the movable disk 7 is rotated by toggling the adjustment lever 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 in a suspended state; Step 4: After the movable disk 7 is adjusted, connect the laser interferometer 2 to the computer, then start the laser interferometer 2, the multi-axis turntable 28 and the automatic precision turntable 26, thereby automatically completing the comprehensive test operation of the orthogonality and intersection of the multi-axis turntable 28.

[0024] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same.

Claims

1. A comprehensive test device for orthogonality and intersection of a multi-axis turntable, characterized in that: include: A bracket (1) for mounting a test device; A laser interferometer (2) is arranged on the top of the bracket (1); A vibration reduction assembly comprises a mounting plate (3), a fixing plate (4), a fixing ring (5), a vibration reduction rubber ring (6), a vibration reduction mechanism and a limiting mechanism, wherein the mounting plate (3) and the fixing plate (4) are both circular in shape, the mounting plate (3) is horizontally fixedly connected to the top of the bracket (1), the fixing plate (4) is horizontally arranged on the top of the mounting plate (3), and the laser interferometer (2) is detachably connected to the top of the fixing plate (4), the fixing ring (5) is sleeved on the outside of the fixing plate (4), the vibration reduction rubber ring (6) is connected between the fixing ring (5) and the mounting plate (3) and is used to buffer the vibration received by the laser interferometer (2), the vibration reduction mechanism is arranged between the mounting plate (3) and the fixing plate (4), and the limiting mechanism is arranged between the fixing ring (5) and the mounting plate (3) and is used to limit the motion trajectory of the laser interferometer (2) in the vertical direction.

2. The multi-axis turntable orthogonality and intersection comprehensive testing device according to claim 1 is characterized in that: The vibration reduction mechanism comprises: A 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); a first magnetic block (8), wherein the number of the first magnetic blocks (8) is multiple, the multiple first magnetic blocks (8) are evenly distributed in an annular manner on the top of the movable disk (7), and the top surface of the first magnetic block (8) is flush with the top surface of the movable disk (7); Second magnetic blocks (9), the number of the second magnetic blocks (9) is the same as the number of the first magnetic blocks (8), the plurality of second magnetic blocks (9) are evenly distributed in an annular shape at the bottom of the fixed disk (4), and the bottom surface of the second magnetic block (9) is flush with the bottom of the fixed disk (4); A support member connected to the top surface of the movable disk (7) and 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; An adjusting member is arranged on a side surface of the movable disk (7) and is used to drive the movable disk (7) to rotate.

3. The multi-axis turntable orthogonality and intersection comprehensive testing device according to claim 2, characterized in that: The support member comprises: Support columns (10), the number of the support columns (10) is multiple, the multiple support columns (10) are evenly distributed in an annular shape, and the support columns (10) are vertically slidably plugged 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 disk (7); A ball (12) is rotatably mounted on the top end of the support column (10), and the outside of the ball (12) is wrapped with vibration-damping rubber; A 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 amount of the support spring (11).

4. The multi-axis turntable orthogonality and intersection comprehensive testing device according to claim 3, characterized in that: The adjusting member comprises: An adjusting rod (14), the adjusting rod (14) being connected horizontally and vertically to the side of the movable disk (7), a curved adjusting hole being horizontally opened at a position on the side of the mounting disk (3) directly opposite to the adjusting rod (14), and the adjusting rod (14) being inserted through the adjusting hole; A locking nut (15) is threadedly sleeved on the free end of the adjusting rod (14) and is used to lock the position of the adjusting rod (14) after it moves.

5. The multi-axis turntable orthogonality and intersection comprehensive testing device according to claim 4, characterized in that: The limiting mechanism includes: Insert rods (16), the number of the insert rods (16) is multiple, the insert rods (16) are evenly distributed in an annular shape, the insert rods (16) are vertically fixedly connected to the bottom of the fixing ring (5), and the insert rods (16) are located in the inner area of ​​the vibration-damping rubber ring (6); The number of the sleeves (17) corresponds to the number of the insertion rods (16), the sleeves (17) are fixedly connected to the top of the mounting plate (3), and the plurality of sleeves (17) are slidably sleeved on the bottom ends of the plurality of insertion rods (16).

6. The multi-axis turntable orthogonality and intersection comprehensive testing device according to claim 5, characterized in that: 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 comprises: A locking ring (18) is horizontally arranged in the groove, and the top of the locking ring (18) is fixedly connected to the bottom of the fixed plate (4) through two fixing blocks (19); A top block (20), wherein the number of the top blocks (20) is two, the two top blocks (20) and the two fixed blocks (19) are alternately distributed, and the top block (20) is fixedly connected to the top of the locking ring (18); A telescopic rod (21) is vertically fixedly connected to the center of the inner wall of the bottom of the groove; A tension spring (22) is sleeved on the telescopic rod (21), and both ends of the tension spring (22) are fixedly connected to positions near both ends of the telescopic rod (21); The locking rod (23) is horizontally fixedly connected to the top end of the telescopic rod (21), and the two ends of the locking rod (23) are respectively located between the two top blocks (20) and the two fixed blocks (19).

7. The multi-axis turntable orthogonality and intersection comprehensive testing device according to claim 6, characterized in that: The top block (20) includes a horizontal section and an inclined section, the inclined section is opposite to 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 slot (24) that matches the locking rod (23).

8. The multi-axis turntable orthogonality and intersection comprehensive testing device according to claim 7, 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).

9. The multi-axis turntable orthogonality and intersection comprehensive testing device according to claim 8, characterized in that: It also includes an automatic precision turntable (26) and an angle interferometer (27) used in conjunction with the laser interferometer (2), wherein the automatic precision turntable (26) is mounted on a multi-axis turntable (28) to be measured, and the angle interferometer (27) is arranged between the automatic precision turntable (26) and the laser interferometer (2).

10. A method for using the multi-axis turntable orthogonality and intersection comprehensive testing device according to claim 9, characterized in that: The following steps are involved: Step 1: Install the automatic precision turntable (26) on the multi-axis turntable (28) through the chuck on the multi-axis turntable (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, the movable disk (7) is driven to rotate by toggling 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) in a suspended state; Step 4: After the movable disk (7) is adjusted, the laser interferometer (2) is connected to the computer, and then the laser interferometer (2), the multi-axis turntable (28) and the automatic precision turntable (26) are started, thereby automatically completing the comprehensive test operation of the orthogonality and intersection of the multi-axis turntable (28).

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