Self-adaptive clamp

Abstract

The utility model belongs to the technical field of clamps, and discloses a self-adaptive clamp which comprises a clamp working table, a direct current motor is fixedly installed in the clamp working table, an output shaft of the direct current motor is fixedly connected with a gear, a sliding block is installed in the clamp working table in a sliding mode, the top end of the sliding block is fixedly connected with a sliding seat, and the sliding seat is fixedly connected with the clamp working table. The outer surface of the gear is connected with a rack in a meshed mode, the rack is fixedly connected to one side of the sliding block, a fixing seat is fixedly installed at the top end of the sliding seat, a clamping head is installed on the inner side of the fixing seat, a rotating shaft is rotatably installed in the fixing seat, and a plurality of positioning holes are formed in the rotating shaft. The deflection angle of the clamped workpiece is changed by adjusting the deflection angle of the clamping head, so that multi-angle machining can be carried out on the workpiece, the situation that the workpiece is frequently taken down to adjust the angle of the workpiece is avoided, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of clamping technology, and in particular relates to an adaptive clamp. Background Technology

[0002] A fixture is a device used in mechanical manufacturing to fix a workpiece in the correct position for processing or inspection. Fixtures not only need to ensure the stability and accuracy of the workpiece during processing, but also need to adapt to workpieces of different shapes, sizes and materials to meet diverse production needs.

[0003] In practical use, especially in machining processes involving complex-shaped workpieces or requiring multiple adjustments to the workpiece angle, traditional fixtures often require frequent removal and readjustment of the workpiece. This not only wastes valuable time but also increases the complexity of the clamping process and reduces production efficiency. Utility Model Content

[0004] This utility model addresses the problem in existing technologies where, in machining processes involving complex-shaped workpieces or requiring multiple adjustments to the workpiece angle, traditional fixtures often necessitate frequent removal and readjustment of the workpiece. This not only wastes valuable time but also increases the complexity of the clamping process and reduces production efficiency. The following technical solution is proposed:

[0005] An adaptive clamp includes a clamping worktable, a DC motor fixedly mounted inside the clamping worktable, a gear fixedly connected to the output shaft of the DC motor, a slider slidably mounted inside the clamping worktable, a sliding seat fixedly connected to the top of the slider, a rack meshing with the outer surface of the gear and the rack fixedly connected to one side of the slider, a fixed seat fixedly mounted to the top of the sliding seat, a clamping head mounted inside the fixed seat, a rotating shaft rotatably mounted inside the fixed seat and having multiple positioning holes inside the rotating shaft, a fixed cover fixedly mounted to the outer side of the fixed seat, a pull rod slidably mounted inside the fixed cover, a positioning cover fixedly connected to one end of the pull rod, and a positioning rod fixedly connected to the end of the positioning cover away from the pull rod.

[0006] As a preferred embodiment of the above technical solution, the number of racks is set to two and they are symmetrically distributed around the gear.

[0007] As a preferred embodiment of the above technical solution, the end of the rotating shaft away from the positioning cover is fixedly connected to the outside of the clamping head.

[0008] As a preferred embodiment of the above technical solution, a limiting ring is fixedly sleeved on the outer side of the rotating shaft, and the limiting ring is rotatably installed inside the fixed base.

[0009] As a preferred embodiment of the above technical solution, a return spring is fixedly connected to the inner wall of the fixing cover, and the other end of the return spring is fixedly connected to the outer side of the positioning cover.

[0010] As a preferred embodiment of the above technical solution, spring telescopic rods are symmetrically fixedly installed inside the clamping head, and pull ropes are fixedly connected to the output ends of the two spring telescopic rods. The same elastic stop is fixedly connected to the opposite ends of the two pull ropes, and guide posts are fixedly installed inside the clamping head.

[0011] The beneficial effects of this utility model are as follows:

[0012] (1) This utility model adjusts the deflection angle of the clamping head, thereby changing the deflection angle of the clamped workpiece, so as to enable multi-angle processing of the workpiece, avoid frequently removing the workpiece to adjust its angle, and improve production efficiency.

[0013] (2) By installing an elastic stop on the clamping head, the elastic stop can contact the workpiece first during the clamping process, thus avoiding direct contact between the workpiece and the clamping head. This not only ensures that the workpiece is firmly clamped, but also effectively protects the workpiece from hard impact or squeezing by the clamping head. Attached Figure Description

[0014] Figure 1 The diagram shown is a schematic representation of the overall structure of the adaptive fixture.

[0015] Figure 2 The diagram shown is a partial structural diagram of the interior of the fixture worktable;

[0016] Figure 3 The diagram shown is a cross-sectional view of the mounting base and the clamping head.

[0017] Figure 4 What is shown is Figure 3 Schematic diagram of the structure of region A in the middle;

[0018] Figure 5 The diagram shows the structure of the rotating shaft and the clamping head.

[0019] In the diagram: 1. Fixture worktable; 2. DC motor; 3. Gear; 4. Slider; 5. Sliding seat; 6. Rack; 7. Fixed seat; 8. Clamping head; 9. Rotating shaft; 901. Positioning hole; 10. Limiting ring; 11. Fixed cover; 12. Pull rod; 13. Return spring; 14. Positioning cover; 15. Positioning rod; 16. Spring telescopic rod; 17. Pull rope; 18. Elastic stop; 19. Guide post. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0021] Example 1: This utility model provides an adaptive clamp, such as Figures 1 to 5 As shown, it includes: a fixture workbench 1, a DC motor 2 fixedly installed inside the fixture workbench 1, a gear 3 fixedly connected to the output shaft of the DC motor 2, a slider 4 slidably installed inside the fixture workbench 1, a sliding seat 5 fixedly connected to the top of the slider 4, a rack 6 meshing with the outer surface of the gear 3 and fixedly connected to one side of the slider 4, a fixed seat 7 fixedly installed to the top of the sliding seat 5, a clamping head 8 installed inside the fixed seat 7, a rotating shaft 9 rotatably installed inside the fixed seat 7 and having multiple positioning holes 901 inside the rotating shaft 9, a fixed cover 11 fixedly installed on the outer side of the fixed seat 7, a pull rod 12 slidably installed inside the fixed cover 11, a positioning cover 14 fixedly connected to one end of the pull rod 12, a positioning rod 15 fixedly connected to the end of the positioning cover 14 away from the pull rod 12, two racks 6 symmetrically distributed about the gear 3, and a fixed connection between the end of the rotating shaft 9 and the positioning cover 14. When the DC motor 2 is powered on and drives the gear 3 to rotate, the gear 3 rotates and drives the two centrally symmetrical racks 6 to slide synchronously relative to each other through the meshing connection. When the racks 6 slide, they drive the slider 4 to slide inside the fixture table 1. When the slider 4 moves, it drives the two fixed seats 7 to move closer or further apart through the connection of the sliding seat 5. When it is necessary to clamp the workpiece, the two fixed seats 7 are brought closer together, which in turn drives the two clamping heads 8 to move closer together, thereby clamping the workpiece between the two clamping heads 8. When it is necessary to adjust the deflection angle of the clamped workpiece, the operator pulls the two pull rods 12 outward at the same time, so that the pull rods 12 are completely pulled out from the fixed cover 11. Through the connection of the positioning cover 14, the positioning rod 15 that is engaged in the positioning hole 901 is pulled out, thereby releasing the fixed state of the rotating shaft 9. Then, the two clamping heads 8 are rotated at the same time and their angles are deflected, thereby realizing the deflection of the clamped workpiece angle.

[0022] In this embodiment, as Figure 3 and Figure 4 As shown, spring telescopic rods 16 are symmetrically fixedly installed inside the clamping head 8. Pull ropes 17 are fixedly connected to the output ends of the two spring telescopic rods 16. The same elastic stop 18 is fixedly connected to the opposite ends of the two pull ropes 17. Guide posts 19 are fixedly installed inside the clamping head 8. When the two clamping heads 8 approach each other to clamp the workpiece, the workpiece first contacts the elastic stop 18. As the two clamping heads 8 approach each other further, the elastic stop 18 will gradually deform due to the pressure of the workpiece and fit tightly against the clamping head 8 and the workpiece, providing a buffering effect during the clamping and fixing of the workpiece, and also enhancing the stability of the workpiece when it is clamped.

[0023] like Figure 3 and Figure 5 As shown, a limiting ring 10 is fixedly sleeved on the outer side of the rotating shaft 9. The limiting ring 10 is rotatably installed inside the fixed seat 7. By setting the limiting ring 10 on the outer side of the rotating shaft 9, the rotation range and direction of the rotating shaft 9 are limited, so that the rotating shaft 9 can rotate stably inside the fixed seat 7 and prevent the rotating shaft 9 from slipping out of the fixed seat 7.

[0024] like Figure 3 and Figure 5 As shown, a return spring 13 is fixedly connected to the inner wall of the fixed cover 11. The other end of the return spring 13 is fixedly connected to the outer side of the positioning cover 14. When the outwardly stretched pull rod 12 is released, the elastic force generated by the stretching of the return spring 13 drives the pull rod 12 to be locked back into the fixed cover 11, thereby driving the positioning rod 15 to be inserted into the positioning hole 901 again, thereby fixing the position of the rotating shaft 9 and preventing it from rotating.

[0025] Working principle: In actual use, the operator places the workpiece to be clamped between the two clamping heads 8. Then, the DC motor 2 is energized, driving the gear 3 to rotate. When the gear 3 rotates, it drives the two centrally symmetrical racks 6 to move synchronously. When the racks 6 move, they drive the fixed seats 7 to move closer together through the connection between the slider 4 and the sliding seat 5, thereby bringing the two clamping heads 8 closer together and clamping the workpiece between the two clamping heads 8. When it is necessary to deflect the angle of the clamped workpiece, the two pull rods 12 are pulled outwards to make it completely open. Pull out the fixed cover 11, and then pull out the positioning rod 15 from the positioning hole 901, thereby releasing the fixed state of the rotating shaft 9. Then rotate the two clamping heads 8 to change their deflection angle. After the deflection angle of the workpiece is adjusted, release the pull rod 12. When the return spring 13 is stretched, the elastic force drives the pull rod 12 and the positioning rod 15 to move in opposite directions, thereby making the pull rod 12 and the positioning rod 15 snap back into the fixed cover 11 and the positioning hole 901 respectively, thereby fixing the rotating shaft 9 in the fixed seat 7 and realizing the deflection of the angle of the clamped workpiece.

[0026] When the two clamping heads 8 approach each other to clamp the workpiece, the elastic stop 18 on the clamping head 8 first contacts the workpiece. As the two clamping heads 8 approach each other further to clamp the workpiece, the elastic stop 18 is squeezed and deformed by the workpiece and the clamping head 8, and fits tightly against the surface of the clamping head 8 and the workpiece to achieve clamping of the workpiece and prevent the workpiece from shifting during processing.

[0027] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. An adaptive clamp, characterized in that, The utility model provides a clamping head is fixedly installed to the inside of the fixed base (7), and the inside of the fixed base (7) is rotatably installed the rotating shaft (9), and the inside of the rotating shaft (9) is equipped with a plurality of positioning hole (901), and the outside of the fixed base (7) is fixedly installed the fixed cover (11), and the inside of the fixed cover (11) is slidably installed the pull rod (12), and one end of pull rod (12) is fixedly connected with the positioning cover (14), and the end away from pull rod (12) of positioning cover (14) is fixedly connected with the positioning rod (15).

2. The adaptive clamp of claim 1, wherein, The number of the rack (6) is two and is symmetrically distributed with the gear (3) as the center.

3. The adaptive clamp of claim 1, wherein, The end away from the positioning cover (14) of the rotating shaft (9) is fixedly connected to the outside of the clamping head (8).

4. The adaptive clamp of claim 1, wherein, The outside of the rotating shaft (9) is fixedly sleeved with a limiting ring (10), which is rotatably installed in the inside of the fixed base (7).

5. The adaptive clamp of claim 1, wherein, The inner wall of the fixed cover (11) is fixedly connected with a return spring (13), and the other end of the return spring (13) is fixedly connected to the outside of the positioning cover (14).

6. The adaptive clamp of claim 1, wherein, The inside of the clamping head (8) is symmetrically fixedly installed with spring telescopic rod (16), and the output ends of two spring telescopic rods (16) are fixedly connected with pull ropes (17), and the opposite ends of two pull ropes (17) are fixedly connected with the same elastic stopper (18), and the inside of the clamping head (8) is fixedly installed with a guide column (19).

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