Numerical control robot arm clamping device

Abstract

The utility model relates to the technical field of numerical control robots, and discloses a numerical control robot arm clamping device which comprises a connecting rod, the lower end of the outer wall of the connecting rod is fixedly connected with a clamping chuck, a mounting groove is formed in the middle of the upper surface of the clamping chuck, and the middles of the inner walls of the two sides of the mounting groove are rotationally connected with two-way threaded rods. According to the numerical control robot arm clamping device, when the numerical control robot arm clamping device is used, a first servo motor is started to drive a two-way threaded rod to rotate and drive a first threaded sleeve block to move at the same time, and limiting blocks on the two sides of the first threaded sleeve block slide in limiting grooves so that the first threaded sleeve block can be limited and move oppositely; the first threaded sleeve blocks move to drive the first clamping jaws to continuously get close, and the distance between the first clamping jaws can be changed by adjusting the positions of the first threaded sleeve blocks on the two sides, so that the clamping device adapts to workpieces of different sizes, and the clamping flexibility is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control robots, in particular to a clamping device for a numerical control robot arm. Background Art

[0002] As we all know, a CNC robot is an automated robot system controlled and programmed by a computer. It combines CNC technology and robotics technology and can perform complex tasks such as assembly, welding, spraying, and handling according to pre-programmed instructions. CNC robots usually have high precision, high efficiency, and flexibility. They can adapt to different production needs and working environments, and significantly improve the degree of automation and production efficiency of production lines. CNC robots are usually equipped with robotic arms for grasping, moving, and handling workpieces.

[0003] However, traditional CNC robot arm clamping devices are usually designed as fixed fixtures, which may be inflexible and unable to adapt to workpieces of different sizes. Therefore, technical improvements are urgently needed. Utility Model Content

[0004] The utility model aims to solve the shortcomings existing in the prior art and proposes a CNC robot arm clamping device. When the CNC robot arm clamping device is in use, the first servo motor is started to drive the bidirectional threaded rod to rotate and at the same time drive the first threaded sleeve block to move. The limiting blocks on both sides of the first threaded sleeve block slide in the limiting groove to limit the first threaded sleeve block so that it moves in opposite directions. The movement of the first threaded sleeve block drives the first clamping claw to continuously approach. By adjusting the positions of the first threaded sleeve blocks on both sides, the spacing between the first clamping claws can be changed to adapt to workpieces of different sizes and improve the flexibility of clamping.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A clamping device for a numerically controlled robot arm comprises a connecting rod, the lower end of the outer wall of the connecting rod is fixedly connected to a clamping chuck, a mounting groove is opened in the middle of the upper surface of the clamping chuck, a bidirectional threaded rod is rotatably connected to the middle of the inner walls on both sides of the mounting groove, both sides of the bidirectional threaded rod body are sleeved with a first threaded sleeve block, the lower end of the first threaded sleeve block penetrates the mounting groove to the outside of the mounting groove and is fixedly connected with a first clamping claw, the middle parts of the front end and rear end inner walls of the mounting groove are rotatably connected to the threaded rod, the front end and rear end of the threaded rod body are sleeved with a second threaded sleeve block, the lower ends of the second threaded sleeve blocks penetrate the mounting groove to the outside of the mounting groove and are fixedly connected with a second clamping claw;

[0007] A protective shell is fixedly connected to the middle of the outer wall of one side of the clamping chuck, a first servo motor is fixedly connected to the other side of the inner wall of the protective shell, a driven bevel gear is fixedly connected to the outer wall of the adjacent side of the threaded rod, a storage groove is opened in the middle of the bottom surface of the installation groove, a second servo motor is fixedly connected to the middle of the bottom surface of the storage groove, and an active bevel gear is fixedly connected to the output end of the second servo motor.

[0008] Through the above technical scheme, compared with the existing CNC robot arm clamping device, when the CNC robot arm clamping device is used, the second servo motor is started to drive the active bevel gear to rotate. At the same time, the active bevel gear and the driven bevel gear are meshed with each other, thereby driving the driven bevel gears at both ends to rotate and driving the threaded rods at both ends to rotate. The rotation of the threaded rod drives the second threaded sleeve block to move in the opposite direction. The second threaded sleeve block drives the second clamping claw to move closer continuously, so that the two ends of the workpiece can be clamped at the same time, thereby improving the stability of the clamping, reducing the instability caused by the offset of the center of gravity, and having high practical performance.

[0009] Furthermore, the inner wall of the installation groove is provided with a plurality of limit grooves, and the outer walls of the first thread sleeve and the second thread sleeve on one side away from the center of the clamping chuck are fixedly connected to the limit blocks;

[0010] Through the above technical solution, the matching is improved by using the limiting blocks and the limiting grooves.

[0011] Furthermore, the limit blocks are slidably connected inside the limit grooves respectively;

[0012] Through the above technical solution, the limiting blocks are respectively slidably connected inside the limiting grooves, so that the first thread sleeve block and the second thread sleeve block are limited so that they can move in opposite directions.

[0013] Further, the driving bevel gear and the driven bevel gear are meshed with each other;

[0014] Through the above technical solution, the driving bevel gear and the driven bevel gear are meshed with each other, so that the rotation of the driving bevel gear drives the rotation of the driven bevel gears at both ends.

[0015] Furthermore, both ends of the bottom surface of the mounting groove near the center of the clamping chuck are fixedly connected with a rotating seat, and the threaded rods at the front and rear ends respectively penetrate the rotating seat;

[0016] Through the above technical solution, the rotation stability of the threaded rod can be improved by using the rotating seat.

[0017] Furthermore, the output end of the first servo motor passes through the clamping chuck to the inside of the mounting groove and is fixedly connected to one side of the outer wall of the bidirectional threaded rod;

[0018] Through the above technical solution, the bidirectional threaded rod can be driven to rotate by the first servo motor.

[0019] Furthermore, both sides of the bidirectional threaded rod body close to the center of the clamping chuck are fixedly connected to limit rings;

[0020] Through the above technical solution, the first threaded sleeve block can be easily limited by the limiting ring.

[0021] The utility model has the following beneficial effects:

[0022] 1. The utility model proposes a CNC robot arm clamping device. Compared with the existing CNC robot arm clamping device, when the CNC robot arm clamping device is used, the first servo motor is started to drive the bidirectional threaded rod to rotate and at the same time drive the first threaded sleeve block to move. The limit blocks on both sides of the first threaded sleeve block slide in the limit groove to limit the first threaded sleeve block so that it moves in opposite directions. The movement of the first threaded sleeve block drives the first clamping claw to continuously approach. By adjusting the positions of the first threaded sleeve blocks on both sides, the spacing between the first clamping claws can be changed to adapt to workpieces of different sizes and improve the flexibility of clamping.

[0023] 2. The utility model proposes a CNC robot arm clamping device. Compared with the existing CNC robot arm clamping device, when the CNC robot arm clamping device is used, the second servo motor is started to drive the active bevel gear to rotate. At the same time, the active bevel gear and the driven bevel gear are meshed with each other, thereby driving the driven bevel gears at both ends to rotate and driving the threaded rods at both ends to rotate. The rotation of the threaded rod drives the second threaded sleeve block to move in the opposite direction. The second threaded sleeve block drives the second clamping claw to move closer continuously, so that the two ends of the workpiece can be clamped at the same time, thereby improving the clamping stability, reducing the instability caused by the center of gravity offset, and having high practical performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is an axonometric diagram of a CNC robot arm clamping device proposed in the utility model;

[0025] Figure 2 This is an axonometric diagram of a CNC robot arm clamping device proposed by the utility model;

[0026] Figure 3 A CNC robot arm clamping device proposed in the utility model Figure 2 A top-down cross-sectional view of

[0027] Figure 4 This is an axial section view of a CNC robot arm clamping device proposed by the utility model;

[0028] Figure 5 for Figure 3 The enlarged view of point A in the middle;

[0029] Figure 6 for Figure 4 Enlarged view of point B

[0030] Legend:

[0031] 1. Connecting rod; 2. Clamping chuck; 3. Mounting groove; 4. Bidirectional threaded rod; 5. First threaded sleeve block; 6. First clamping claw; 7. Limit block; 8. Limit groove; 9. Threaded rod; 10. Driven bevel gear; 11. Second threaded sleeve block; 12. Second clamping claw; 13. Rotating seat; 14. Protective shell; 15. First servo motor; 16. Storage groove; 17. Second servo motor; 18. Active bevel gear; 19. Limit ring. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Reference Figure 1-6 , an embodiment provided by the utility model:

[0034] A clamping device for a numerically controlled robot arm, comprising a connecting rod 1, a clamping chuck 2 is fixedly connected to the lower end of the outer wall of the connecting rod 1, a mounting groove 3 is opened in the middle of the upper surface of the clamping chuck 2, a bidirectional threaded rod 4 is rotatably connected to the middle of the inner walls on both sides of the mounting groove 3, both sides of the rod body of the bidirectional threaded rod 4 are sleeved with a first threaded sleeve 5, the lower end of the first threaded sleeve 5 penetrates the mounting groove 3 to the outside of the mounting groove 3 and is fixedly connected with a first clamping claw 6, the middle of the inner wall of the front end and the rear end of the mounting groove 3 are rotatably connected with a threaded rod 9, the front end and the rear end of the rod body of the threaded rod 9 are sleeved with a second threaded sleeve 11, the lower end of the second threaded sleeve 11 penetrates the mounting groove 3 to the outside of the mounting groove 3 and is fixedly connected with a second clamping claw 12;

[0035] A protective shell 14 is fixedly connected to the middle of the outer wall on one side of the clamping chuck 2, a first servo motor 15 is fixedly connected to the other side of the inner wall of the protective shell 14, a driven bevel gear 10 is fixedly connected to the outer wall on the adjacent side of the threaded rod 9, a storage groove 16 is opened in the middle of the bottom surface of the mounting groove 3, a second servo motor 17 is fixedly connected to the middle of the bottom surface of the storage groove 16, and an active bevel gear 18 is fixedly connected to the output end of the second servo motor 17.

[0036] Compared with the existing CNC robot arm clamping device, when the CNC robot arm clamping device is used, the second servo motor 17 is started to drive the active bevel gear 18 to rotate. At the same time, the active bevel gear 18 and the driven bevel gear 10 are meshed with each other, thereby driving the driven bevel gears 10 at both ends to rotate and driving the threaded rods 9 at both ends to rotate. The rotation of the threaded rods 9 drives the second threaded sleeve block 11 to move in the opposite direction. The second threaded sleeve block drives the second clamping claw 12 to move closer, so that the two ends of the workpiece can be clamped at the same time, thereby improving the stability of the clamping, reducing the instability caused by the center of gravity offset, and having high practical performance.

[0037] The inner wall of the mounting groove 3 is provided with a plurality of limit grooves 8. The outer wall of the first threaded sleeve 5 and the second threaded sleeve 11 on one side away from the center of the clamping chuck 2 is fixedly connected to the limit block 7. The limit block 7 and the limit groove 8 are convenient for improving the matching. The limit blocks 7 are respectively slidably connected inside the limit groove 8. The limit blocks 7 are respectively slidably connected inside the limit groove 8, so that the first threaded sleeve 5 and the second threaded sleeve 11 are conveniently limited to make them move in opposite directions. The active bevel gear 18 is meshed with the driven bevel gear 10. The active bevel gear 18 is meshed with the driven bevel gear 10, so that the active bevel gear 18 rotates to drive the two The driven bevel gear 10 at the end rotates, and both ends of the bottom surface of the mounting groove 3 near the center of the clamping chuck 2 are fixedly connected with a rotating seat 13, and the front and rear end threaded rods 9 respectively penetrate the rotating seat 13. The rotating seat 13 is used to improve the stability of the rotation of the threaded rod. The output end of the first servo motor 15 penetrates the clamping chuck 2 to the inside of the mounting groove 3 and is fixedly connected to one side of the outer wall of the bidirectional threaded rod 4. The first servo motor 15 is used to drive the bidirectional threaded rod 4 to rotate. The two sides of the bidirectional threaded rod 4 near the center of the clamping chuck 2 are fixedly connected with limiting rings 19, and the limiting rings 19 are used to limit the first threaded sleeve block 5.

[0038] Working principle: When in use, the first servo motor 15 is started through the CNC program to drive the bidirectional threaded rod 4 to rotate and drive the first threaded sleeve 5 to move at the same time. The limit blocks 7 on both sides of the first threaded sleeve 5 slide in the limit groove 8 to limit the first threaded sleeve 5, so that it moves in the opposite direction. The movement of the first threaded sleeve 5 drives the first clamping claw 6 to approach continuously. By adjusting the position of the first threaded sleeve 5 on both sides, the spacing of the first clamping claw 6 can be changed to adapt to workpieces of different sizes and improve the flexibility of clamping. By starting the second servo motor 17 to drive the active bevel gear 18 to rotate, the active bevel gear 18 and the driven bevel gear 10 are engaged with each other, thereby driving the driven bevel gears 10 at both ends to rotate and driving the threaded rods 9 at both ends to rotate. The threaded rod 9 rotates to drive the second threaded sleeve 11 to move in the opposite direction. The second threaded sleeve 11 drives the second clamping claw 12 to approach continuously, so that the two ends of the workpiece can be clamped at the same time, the stability of its clamping is improved, and the instability caused by the offset of the center of gravity can be reduced.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A CNC robot arm clamping device, comprising a connecting rod (1), characterized in that: The lower end of the outer wall of the connecting rod (1) is fixedly connected to a clamping chuck (2), a mounting groove (3) is provided in the middle of the upper surface of the clamping chuck (2), and the middle of the inner walls on both sides of the mounting groove (3) are rotatably connected to a bidirectional threaded rod (4), both sides of the rod body of the bidirectional threaded rod (4) are sleeved with a first threaded sleeve (5), the lower end of the first threaded sleeve (5) penetrates through the mounting groove (3) to the outside of the mounting groove (3) and is fixedly connected to a first clamping claw (6), the middle of the inner walls at the front end and the rear end of the mounting groove (3) are rotatably connected to a threaded rod (9), the front end and the rear end of the rod body of the threaded rod (9) are sleeved with a second threaded sleeve (11), the lower end of the second threaded sleeve (11) penetrates through the mounting groove (3) to the outside of the mounting groove (3) and is fixedly connected to a second clamping claw (12); A protective shell (14) is fixedly connected to the middle of the outer wall of one side of the clamping chuck (2), a first servo motor (15) is fixedly connected to the other side of the inner wall of the protective shell (14), a driven bevel gear (10) is fixedly connected to the outer wall of the adjacent side of the threaded rod (9), a storage groove (16) is opened in the middle of the bottom surface of the installation groove (3), a second servo motor (17) is fixedly connected to the middle of the bottom surface of the storage groove (16), and an output end of the second servo motor (17) is fixedly connected to a driving bevel gear (18).

2. A CNC robot arm clamping device according to claim 1, characterized in that: The inner wall of the installation groove (3) is provided with a plurality of limit grooves (8), and the outer walls of the first threaded sleeve (5) and the second threaded sleeve (11) on one side away from the center of the clamping chuck (2) are fixedly connected to the limit block (7).

3. A CNC robot arm clamping device according to claim 2, characterized in that: The limiting blocks (7) are respectively slidably connected inside the limiting grooves (8).

4. A CNC robot arm clamping device according to claim 1, characterized in that: The driving bevel gear (18) and the driven bevel gear (10) are meshed with each other.

5. The CNC robot arm clamping device according to claim 1, characterized in that: Both ends of the bottom surface of the mounting groove (3) close to the center of the clamping chuck (2) are fixedly connected to a rotating seat (13), and the threaded rod (9) at the front and rear ends respectively penetrates the rotating seat (13).

6. A CNC robot arm clamping device according to claim 1, characterized in that: The output end of the first servo motor (15) passes through the clamping chuck (2) to the inside of the mounting groove (3) and is fixedly connected to one side of the outer wall of the bidirectional threaded rod (4).

7. The CNC robot arm clamping device according to claim 1, characterized in that: Both sides of the bidirectional threaded rod (4) near the center of the clamping chuck (2) are fixedly connected to limit rings (19).

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