Adjustable clamp for polishing robot
The design of symmetrical limiting posts and turntables solves the problem of low clamping efficiency for irregularly shaped ring-shaped workpieces, enabling rapid fixing and efficient grinding, and reducing the installation and maintenance costs of the power unit.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG BEE INTELLIGENT MFG CO LTD
- Filing Date
- 2025-03-28
- Publication Date
- 2026-04-24
AI Technical Summary
Existing technology requires adjusting the positions of the upper and lower limit posts and the left and right limit posts separately when clamping irregularly shaped ring-shaped workpieces, which reduces clamping efficiency.
The first and second limit posts are symmetrically arranged. The limit posts move synchronously through the cooperation of nuts and turntables. The distance between the contact points of the limit posts and the inner side of the workpiece is adjusted to be equal. The turntable and inclined groove drive the slider and limit posts to slide, so as to achieve rapid fixation.
It improves the clamping efficiency of regular and irregular ring-shaped workpieces, reduces the space and cost requirements of the power unit, reduces the control difficulty, and extends the service life of the fixture.
Smart Images
Figure CN224158260U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of grinding robots, specifically an adjustable fixture for grinding robots. Background Technology
[0002] To reduce labor intensity and improve product qualification rate, there are currently integrated machines that use robots to automatically grind workpieces to remove burrs. For ring-shaped workpieces, tooling is used to clamp the inner and outer walls of the ring-shaped workpiece, and the grinding blades on the robot grind the outer and inner sides of the ring-shaped workpiece. The tooling includes several limit posts that slide on the frame, as well as a drive device that adjusts the position of the limit posts, so as to clamp ring-shaped workpieces with different inner and outer diameters.
[0003] For irregularly shaped ring parts, since the distance from the contact points on the upper and lower sides to the center point is different from the distance from the contact points on the left and right sides to the center point, the positions of the upper and lower limit posts and the left and right limit posts need to be adjusted separately, which reduces the efficiency of clamping the ring workpiece to some extent. Utility Model Content
[0004] The purpose of this invention is to provide an adjustable clamp for a grinding robot, which solves the problem of not being able to quickly clamp irregularly shaped ring-shaped workpieces and improves the efficiency of clamping ring-shaped workpieces.
[0005] To achieve the above objectives, the utility model employs the following technical solution:
[0006] An adjustable fixture for a grinding robot includes a first limiting post and a second limiting post symmetrically arranged on a base frame to contact a ring-shaped workpiece. The base frame is provided with a transverse groove and a longitudinal groove, and the first and second limiting posts are slidably disposed in the transverse groove and the longitudinal groove, respectively. The fixture also includes a slider slidably disposed in the transverse groove. The slider is provided with a guide rod slidably connected to the first limiting post. The guide rod is threaded with a first nut and a second nut that are in contact with the first limiting post, respectively. The base frame is provided with a rotating shaft, and the rotating shaft is provided with a turntable that simultaneously drives the slider and the second limiting post to slide in the transverse groove and the longitudinal groove, respectively.
[0007] Furthermore, the distance from the second limiting post to the center point of the turntable is greater than the distance from the slider to the center point of the turntable.
[0008] Furthermore, the turntable is provided with several inclined grooves that respectively slide in contact with the slider and the second limiting post.
[0009] Furthermore, the first limiting post and the second limiting post are respectively provided with a first roller and a second roller that make rolling contact with the annular workpiece.
[0010] Furthermore, the base frame is equipped with a rotary motor, the movable end of the rotary motor is equipped with a drive wheel, the rotating shaft is equipped with a driven wheel, the driven wheel is equipped with several columns, and a lever is equipped on one side of the drive wheel. The lever contacts one of the columns and drives it to move to the position of the previous column.
[0011] Furthermore, a limiting block is provided on the other side of the drive wheel, and a limiting groove is provided on the other side of the driven wheel with a column. The limiting block contacts the limiting groove and restricts the rotation of the driven wheel.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] 1. When it is necessary to fix the inner side of the regular ring workpiece, place the ring workpiece at the center of the base frame, and adjust the position of the first nut and the second nut on the guide rod to drive the first limit post to move on the guide rod until the distance from the first limit post to the center point of the turntable is equal to the distance from the second limit post to the center point.
[0014] Next, the turntable simultaneously drives the slider and the second limiting post to slide in the transverse and longitudinal grooves respectively, so that the second limiting post contacts the inner side of the annular workpiece. At the same time, the guide rod, the first nut and the second nut transmit the force, which drives the first limiting post to move together. Since the distance from the first limiting post to the center point of the turntable is equal to the distance from the second limiting post to the center point, the first limiting post contacts the inner side of the annular workpiece at the same time, thereby fixing the regular annular workpiece at the center of the base frame, which facilitates the subsequent grinding of the workpiece by the robot, thereby improving the efficiency of the robot in grinding regular annular workpieces.
[0015] 2. When the distance from the contact points on the upper and lower sides of the annular workpiece to the center point is different from the distance from the contact points on the left and right sides to the center point, the positions of the first nut and the second nut are adjusted to change the distance from the two first limit posts to the center point, so that the distances from the first limit posts and the second limit posts to the annular workpiece are equal. The above steps are repeated, and the first limit posts and the second limit posts are moved by the turntable to fix the irregular annular workpiece. There is no need to set up a separate power mechanism to drive the first limit posts and the second limit posts to move, which reduces the space required for power device installation and the manufacturing cost, while reducing the difficulty of controlling the power device and improving the efficiency of grinding annular workpieces. Attached Figure Description
[0016] Appendix Figure 1 This is a structural schematic diagram of the base frame of this utility model.
[0017] Appendix Figure 2 This is a schematic diagram of the structure of the first limiting post of this utility model.
[0018] Appendix Figure 3 This is an appendix to the utility model Figure 2 A magnified view of part A in the middle.
[0019] Appendix Figure 4 This is a schematic diagram of the structure of the second limiting post of this utility model.
[0020] Appendix Figure 5 This is a schematic diagram of the structure of the turntable of this utility model.
[0021] Appendix Figure 6 This is a schematic diagram of the lever structure of this utility model.
[0022] Appendix Figure 7 This is a schematic diagram of the structure of the limiting block of this utility model.
[0023] The labels shown in the attached diagram:
[0024] 1. Base frame; 2. Ring-shaped workpiece; 3. First limiting post; 4. Second limiting post; 5. Transverse groove; 6. Longitudinal groove; 7. Slider; 8. Guide rod; 9. First nut; 10. Second nut; 11. Rotating shaft; 12. Turntable; 13. Inclined groove; 15. First roller; 16. Second roller; 17. Rotary motor; 18. Drive wheel; 19. Driven wheel; 20. Column; 21. Lever; 22. Limiting block; 23. Limiting groove. Detailed Implementation
[0025] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application.
[0026] This utility model provides an adjustable clamp for a grinding robot, such as Figures 1-4As shown, the device includes a first limiting post 3 and a second limiting post 4 symmetrically arranged on a base frame 1 in contact with the annular workpiece 2. The base frame 1 is provided with a transverse groove 5 and a longitudinal groove 6. The first limiting post 3 and the second limiting post 4 are slidably disposed within the transverse groove 5 and the longitudinal groove 6, respectively, guiding the sliding of the first limiting post 3 and the second limiting post 4 and preventing them from deviating from the track. The device also includes a slider 7 slidably disposed within the transverse groove 5. The slider 7 is provided with a guide rod 8 slidably connected to the first limiting post 3. The guide rod 8 is threadedly connected to the first limiting post 3. The first nut 9 and the second nut 10 are in contact with the column 3. The base frame 1 is provided with a rotating shaft 11. The rotating shaft 11 is provided with a turntable 12 that simultaneously drives the slider 7 and the second limiting column 4 to slide in the transverse groove 5 and the longitudinal groove 6 respectively. When it is necessary to fix the inner side of the regular ring workpiece 2, the ring workpiece 2 is placed at the center of the base frame 1. By adjusting the position of the first nut 9 and the second nut 10 on the guide rod 8, the first limiting column 3 is driven to move on the guide rod 8 until the distance from the first limiting column 3 to the center point of the turntable 12 is equal to the distance from the second limiting column 4 to the center point.
[0027] Next, the turntable 12 simultaneously drives the slider 7 and the second limiting post 4 to slide in the transverse groove 5 and the longitudinal groove 6 respectively, so that the second limiting post 4 contacts the inner side of the annular workpiece 2. At the same time, the guide rod 8, the first nut 9 and the second nut 10 transmit the component force, which drives the first limiting post 3 to move together. Since the distance from the first limiting post 3 to the center point of the turntable 12 is equal to the distance from the second limiting post 4 to the center point, the first limiting post 3 contacts the inner side of the annular workpiece 2 at the same time, thereby fixing the regular annular workpiece 2 at the center of the base frame 1, which facilitates the subsequent grinding of the workpiece by the robot, thereby improving the efficiency of the robot grinding the regular annular workpiece 2.
[0028] When the distance from the contact points on the upper and lower sides of the annular workpiece 2 to the center point is different from the distance from the contact points on the left and right sides to the center point, the positions of the first nut 9 and the second nut 10 are adjusted to change the distance from the two first limit posts 3 to the center point, so that the distances from the first limit posts 3 and the second limit posts 4 to the annular workpiece 2 are equal. The above steps are repeated, and the turntable 12 drives the first limit posts 3 and the second limit posts 4 to move, thereby fixing the irregular annular workpiece 2. There is no need to set up a separate power mechanism to drive the first limit posts 3 and the second limit posts 4 to move, which reduces the space required for power device installation and the cost of manufacturing. At the same time, it reduces the difficulty of controlling the power device and improves the efficiency of grinding the annular workpiece 2.
[0029] Preferred, such as Figure 1 and Figure 5As shown, the distance from the second limiting post 4 to the center point of the turntable 12 is greater than the distance from the slider 7 to the center point of the turntable 12, so that the distance from the first limiting post 3 to the center point of the turntable 12 can be reduced to be equal to that of the second limiting post 4, thereby fixing the regular ring workpiece 2 without the need to set up different types of fixtures for fixing, further reducing the replacement cost of the fixtures.
[0030] Preferred, such as Figure 5 As shown, the turntable 12 is provided with several inclined grooves 13 that slide in contact with the slider 7 and the second limiting post 4 respectively. As the turntable 12 rotates on the base frame 1, the inclined grooves 13 on the turntable 12 further contact the slider 7 and the second limiting post 4. The component force generated after contact simultaneously drives the slider 7 and the second limiting post 4 to slide on the base frame 1 until the first limiting post 3 and the second limiting post 4 contact the annular workpiece 2, thereby fixing the annular workpiece 2, which facilitates the subsequent grinding of the annular workpiece 2 by the robot and further improves the efficiency of grinding the annular workpiece 2.
[0031] Preferred, such as Figure 1 , Figure 2 and Figure 4 As shown, the first limiting post 3 and the second limiting post 4 are respectively provided with a first roller 15 and a second roller 16 that roll in contact with the annular workpiece 2. The rolling contact between the first roller 15 and the second roller 16 and the annular workpiece 2 can reduce the friction between the annular workpiece 2 and the first limiting post 3 and the second limiting post 4, thereby reducing the wear of the first limiting post 3 and the second limiting post 4, extending the service life of the fixture, and reducing the cost required to maintain the fixture.
[0032] Preferred, such as Figure 4 and Figure 6 As shown, a rotary motor 17 is mounted on the base frame 1. A drive wheel 18 is mounted on the movable end of the rotary motor 17. A driven wheel 19 is mounted on the rotating shaft 11. Several columns 20 are mounted on the driven wheel 19. A lever 21 is mounted on one side of the drive wheel 18. The lever 21 contacts one of the columns 20 and drives it to move to the position of the previous column 20. The rotary motor 17 drives the drive wheel 18 to rotate, causing the lever 21 on the drive wheel 18 to contact one of the columns 20 on the driven wheel 19. When they come into contact, the resulting force drives the driven wheel 19 to rotate, which in turn drives the turntable 12 to rotate until one of the columns 20 moves to the position of the previous column 20. This causes the turntable 12 to rotate slightly. Through the cooperation of the inclined groove 13 with the slider 7 and the second limiting column 4, the first limiting column 3 and the second limiting column 4 move a short distance. The above steps are repeated multiple times until the first limiting column 3 and the second limiting column 4 come into contact with the annular workpiece 2, thereby achieving the positioning of the annular workpiece 2 and further improving the grinding effect of the annular workpiece 2.
[0033] Preferred, such as Figure 4 and Figure 7 As shown, a limiting block 22 is provided on the other side of the drive wheel 18, and a limiting groove 23 is provided on the other side of the driven wheel 19 with a column 20. The limiting block 22 contacts the limiting groove 23 and restricts the rotation of the driven wheel 19, thereby fixing the turntable 12 on the base frame 1 and preventing external forces from unintentionally driving the turntable 12 to rotate, causing the first limiting column 3 and the second limiting column 4 to shift. This ensures that the fixture continuously fixes the annular workpiece 2 during the grinding process, thereby improving the grinding effect.
[0034] Example 1
[0035] This utility model provides an adjustable clamp for a grinding robot, such as Figures 1-4 As shown, when it is necessary to fix the inner side of the regular ring workpiece 2, place the ring workpiece 2 at the center of the base frame 1, and adjust the position of the first nut 9 and the second nut 10 on the guide rod 8 to drive the first limiting post 3 to move on the guide rod 8 until the distance from the first limiting post 3 to the center point of the turntable 12 is equal to the distance from the second limiting post 4 to the center point.
[0036] Next, the turntable 12 simultaneously drives the slider 7 and the second limiting post 4 to slide in the transverse groove 5 and the longitudinal groove 6 respectively, so that the second limiting post 4 contacts the inner side of the annular workpiece 2. At the same time, the guide rod 8, the first nut 9 and the second nut 10 transmit the component force, which drives the first limiting post 3 to move together. Since the distance from the first limiting post 3 to the center point of the turntable 12 is equal to the distance from the second limiting post 4 to the center point, the first limiting post 3 contacts the inner side of the annular workpiece 2 at the same time, thereby fixing the regular annular workpiece 2 at the center of the base frame 1, which facilitates the subsequent grinding of the workpiece by the robot, thereby improving the efficiency of the robot grinding the regular annular workpiece 2.
[0037] When the distance from the contact points on the upper and lower sides of the annular workpiece 2 to the center point is different from the distance from the contact points on the left and right sides to the center point, the positions of the first nut 9 and the second nut 10 are adjusted to change the distance from the two first limit posts 3 to the center point, so that the distances from the first limit posts 3 and the second limit posts 4 to the annular workpiece 2 are equal. The above steps are repeated, and the turntable 12 drives the first limit posts 3 and the second limit posts 4 to move, thereby fixing the irregular annular workpiece 2. There is no need to set up a separate power mechanism to drive the first limit posts 3 and the second limit posts 4 to move, which reduces the space required for power device installation and the cost of manufacturing. At the same time, it reduces the difficulty of controlling the power device and improves the efficiency of grinding the annular workpiece 2.
[0038] Example 2
[0039] Based on Example 1, such as Figure 1 , Figure 3 and Figure 5As shown, the distance from the second limiting post 4 to the center point of the turntable 12 is greater than the distance from the slider 7 to the center point of the turntable 12, so that the distance from the first limiting post 3 to the center point of the turntable 12 can be reduced to be equal to that of the second limiting post 4, thereby fixing the regular ring workpiece 2 without the need to set up different types of fixtures for fixing, further reducing the replacement cost of the fixtures.
[0040] In addition, the rolling contact between the first roller 15 and the second roller 16 and the annular workpiece 2 can reduce the friction between the annular workpiece 2 and the first limiting post 3 and the second limiting post 4, thereby reducing the wear of the first limiting post 3 and the second limiting post 4, extending the service life of the fixture, and reducing the cost required to maintain the fixture.
[0041] Example 3
[0042] Based on Example 1, such as Figure 4 , Figure 6 and Figure 7 As shown, when it is necessary to fix the annular workpiece 2, the drive wheel 18 is rotated by the rotary motor 17, so that the lever 21 on the drive wheel 18 contacts one of the columns 20 on the driven wheel 19. The resulting force drives the driven wheel 19 to rotate and drives the turntable 12 to rotate until one of the columns 20 moves to the position of the previous column 20, thereby driving the turntable 12 to rotate slightly, so that the inclined groove 13 on the turntable 12 further contacts the slider 7 and the second limiting post 4. The resulting force after contact simultaneously drives the slider 7 and the second limiting post 4 to slide a small distance on the base frame 1. The above steps are repeated multiple times until the first limiting post 3 and the second limiting post 4 contact the annular workpiece 2, thereby achieving the positioning of the annular workpiece 2 and further improving the grinding effect of the annular workpiece 2.
[0043] In addition, after each rotation of the drive turntable 12, the limiting block 22 on the other side of the drive wheel 18 will re-enter the limiting groove 23 on the driven wheel 19. The resistance generated by the contact between the two will limit the rotation of the driven wheel 19, thereby fixing the turntable 12 on the base frame 1. This prevents the turntable 12 from being accidentally driven to rotate by external force, which would cause the first limiting post 3 and the second limiting post 4 to shift. This ensures that the fixture continuously fixes the annular workpiece 2 during the grinding process, thereby improving the grinding effect.
Claims
1. An adjustable fixture for a grinding robot, comprising a first limiting post (3) and a second limiting post (4) symmetrically arranged on a base frame (1) in contact with a ring-shaped workpiece (2), characterized in that: The base frame (1) is provided with a transverse groove (5) and a longitudinal groove (6). The first limiting post (3) and the second limiting post (4) are slidably disposed in the transverse groove (5) and the longitudinal groove (6) respectively. It also includes a slider (7) slidably disposed in the transverse groove (5). The slider (7) is provided with a guide rod (8) slidably connected to the first limiting post (3). The guide rod (8) is threadedly connected with a first nut (9) and a second nut (10) that are in contact with the first limiting post (3). The base frame (1) is provided with a rotating shaft (11). The rotating shaft (11) is provided with a turntable (12) that simultaneously drives the slider (7) and the second limiting post (4) to slide in the transverse groove (5) and the longitudinal groove (6) respectively.
2. The adjustable gripper for a grinding robot according to claim 1, characterized in that: The distance from the center point of the second limiting post (4) to the center point of the turntable (12) is greater than the distance from the center point of the slider (7) to the center point of the turntable (12).
3. The adjustable fixture for a grinding robot according to claim 1, characterized in that: The turntable (12) is provided with several inclined grooves (13) that slide in contact with the slider (7) and the second limiting post (4).
4. The adjustable fixture for a grinding robot according to claim 1, characterized in that: The first limiting post (3) and the second limiting post (4) are respectively provided with a first roller (15) and a second roller (16) that roll in contact with the annular workpiece (2).
5. The adjustable fixture for a grinding robot according to claim 1, characterized in that: The base frame (1) is equipped with a rotary motor (17), the movable end of the rotary motor (17) is equipped with a drive wheel (18), the rotating shaft (11) is equipped with a driven wheel (19), the driven wheel (19) is equipped with several columns (20), the drive wheel (18) is equipped with a lever (21) on one side, the lever (21) contacts one of the columns (20) and drives it to move to the position of the previous column (20).
6. The adjustable fixture for a grinding robot according to claim 5, characterized in that: The drive wheel (18) is provided with a limiting block (22) on the other side, and the driven wheel (19) is provided with a limiting groove (23) on the other side of the column (20). The limiting block (22) contacts the limiting groove (23) and restricts the rotation of the driven wheel (19).