Finger structural part for mechanical arm

Abstract

The utility model discloses a mechanical arm's finger structural member, including finger shell and connecting seat, said connecting seat with finger shell nesting connection, the end portion of finger shell is fixedly bonded with wear-resisting part, the inside of connecting seat is provided with oil storage chamber, one end of connecting seat is provided with hinge groove, and the hinge groove is connected with the oil storage chamber. An oil seepage assembly is arranged between the hinge groove and the oil storage cavity. According to the mechanical arm, the finger shell and the connecting base are nested, the finger shell and the connecting base are connected through the positioning columns and the corresponding assembly holes, the different lengths of the fingers can be adjusted, the stability of the mechanical arm for grabbing different objects is improved, and the oil storage cavity and the oil seepage assembly are arranged in the connecting base to be matched, so that the mechanical arm is more stable. And the connecting parts of the fingers can be lubricated, the abrasion of the fingers of the mechanical arm in the continuous moving process is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to a finger structural member for a robotic arm, belonging to the technical field of robotic arms. Background Art

[0002] Currently, robotic arms are widely used in the industrial field and are important components for realizing automated production. Among them, the fingers of the robotic arm are one of the important parts of the robotic arm. By assembling the fingers into the gripper of the robotic arm, the grasping and conveying of objects can be realized.

[0003] The traditional fingers of the robotic arm are of a fixed design and the length cannot be adjusted. When grasping and conveying objects of different shapes and sizes, it is easy to affect the clamping stability of objects that do not meet the size. At the same time, there is no lubrication structure design at the hinge part of the fingers. During the long-term movement of the fingers, it is easy to increase the wear of the moving parts and affect the service life of the fingers. Therefore, we have designed a finger structural member for a robotic arm. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a finger structural member for a robotic arm to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: It includes a finger housing and a connecting seat. The connecting seat is nested with the finger housing. A wear-resistant part is fixedly bonded to the end of the finger housing. An oil storage cavity is opened inside the connecting seat. A hinge groove is opened at one end of the connecting seat. An oil seepage component is arranged between the hinge groove and the oil storage cavity.

[0006] In the above-mentioned finger structural member for a robotic arm, a rectangular groove is opened at the other end of the connecting seat. Positioning columns are inserted through both sides of the rectangular groove. A first return spring is fixedly installed between the two positioning columns. A plurality of assembly holes are equidistantly opened on both sides of the inner wall of the finger housing. The two positioning columns are inserted through the corresponding assembly holes.

[0007] In the above-mentioned finger structural member for a robotic arm, the oil seepage component includes an oil seepage block and an oil passage. An oil passage is opened between the hinge groove and the oil storage cavity. An oil seepage block is fixedly installed at the communication part of the oil passage and the oil storage cavity. Uniformly distributed capillary holes are opened on the surface of the oil seepage block.

[0008] In the above-mentioned finger structural member for a robotic arm, a frustum-shaped oil storage cavity is opened in the middle of the oil passage. A frustum-shaped plug block is nested inside the frustum-shaped oil storage cavity. A second return spring is fixedly installed at one end of the frustum-shaped plug block. One end of the second return spring is fixedly connected to the bottom end of the frustum-shaped oil storage cavity.

[0009] In the above-mentioned finger structure for a robotic arm, a convex block is fixedly connected to the center of the other end of the frustum-shaped plugging block, and one end of the convex block passes through the oil passage and extends into the hinge groove.

[0010] In the above-mentioned finger structure for a robotic arm, an oil injection hole is provided on one side of the oil storage cavity, and a sealing plug is nested inside the oil injection hole.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. The finger housing is nested with the connecting seat and connected to the corresponding assembly holes through the positioning posts, which can adjust the different lengths of the fingers and improve the stability of the robotic arm for grasping different objects.

[0013] 2. The internal setting of the connecting seat with the cooperation of the oil storage cavity and the oil seepage component can lubricate the connecting parts of the fingers, reduce the wear of the robotic arm fingers during continuous movement, and improve the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of a finger structure for a robotic arm of the present utility model;

[0015] Figure 2 is a schematic internal structural diagram of a finger structure for a robotic arm of the present utility model;

[0016] Figure 3 is a finger structure for a robotic arm of the present utility model Figure 2 Partial enlarged view at A.

[0017] In the figure: 1. Finger housing; 2. Connecting seat; 3. Wear-resistant part; 4. Assembly hole; 5. Positioning post; 6. Rectangular groove; 7. First return spring; 8. Oil storage cavity; 9. Hinge groove; 10. Oil seepage block; 11. Capillary pore; 12. Oil passage; 13. Frustum-shaped oil storage cavity; 14. Second return spring; 15. Convex block; 16. Frustum-shaped plugging block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0019] Please refer to Figures 1 - 3, the present utility model provides a technical solution for a finger structural member of a robotic arm:

[0020] According to Figures 1 - 3 As shown, it includes a finger housing 1 and a connecting seat 2. The connecting seat 2 is nested with the finger housing 1. A wear-resistant part 3 is fixedly bonded to the end of the finger housing 1. An oil storage cavity 8 is formed inside the connecting seat 2. An articulated groove 9 is formed at one end of the connecting seat 2. An oil seepage component is arranged between the articulated groove 9 and the oil storage cavity 8.

[0021] Specifically, the cooperation of the oil storage cavity 8 and the oil seepage component arranged inside the connecting seat 2 can lubricate the connecting part of the finger, reduce the wear of the robotic arm finger during continuous movement, and improve the service life.

[0022] According to Figure 1 、 Figure 2 and Figure 3 As shown, a rectangular groove 6 is formed at the other end of the connecting seat 2. Positioning columns 5 are inserted through both sides of the rectangular groove 6. A first return spring 7 is fixedly installed between the two positioning columns 5. A plurality of assembly holes 4 are equidistantly arranged on both sides of the inner arm of the finger housing 1. The two positioning columns 5 are inserted through the corresponding assembly holes 4.

[0023] Specifically, by inserting the positioning columns 5 through the corresponding assembly holes 4, the length adjustment of the finger can be realized.

[0024] According to Figure 1 、 Figure 2 and Figure 3 As shown, the oil seepage component includes an oil seepage block 10 and an oil passage 12. An oil passage 12 is formed between the articulated groove 9 and the oil storage cavity 8. An oil seepage block 10 is fixedly installed at the connection of the oil passage 12 and the oil storage cavity 8. Uniformly distributed capillary holes 11 are formed on the surface of the oil seepage block 10.

[0025] A frustum-shaped oil storage cavity 13 is formed in the middle of the oil passage 12. A frustum-shaped plugging block 16 is nested inside the frustum-shaped oil storage cavity 13. A second return spring 14 is fixedly installed at one end of the frustum-shaped plugging block 16. One end of the second return spring 14 is fixedly connected to the bottom end of the frustum-shaped oil storage cavity 13.

[0026] The center of the other end of the frustum-shaped plugging block 16 is fixedly connected with a convex block 15. One end of the convex block 15 passes through the oil passage 12 and extends into the articulated groove 9.

[0027] Specifically, through the cooperation of the convex block 15, the frustum-shaped plugging block 16 and the second return spring 14, when the convex block 15 moves, a gap will be generated between the frustum-shaped plugging block 16 and the frustum-shaped oil storage cavity 13, so that the lubricating oil flows into the articulated groove 9 to lubricate the articulated part of the finger and reduce the wear of the articulated part during movement.

[0028] An oil injection hole is provided on one side of the oil storage cavity 8, and a sealing plug is nested inside the oil injection hole.

[0029] Specifically, by providing the oil injection hole, it is convenient to regularly inject lubricating oil into the interior of the oil storage cavity 8.

[0030] Working principle: For a finger structure member of a robotic arm in the present utility model, when the robotic arm is used for gripping an object, first, the length of the finger is adjusted according to the object to be gripped. Manually press the positioning post 5 into the interior of the rectangular groove 6, and then adjust the depth of insertion of the connecting seat 2 into the finger housing 1 according to requirements, and ensure that the positioning post 5 is aligned with the assembly hole 4. Then, the first return spring 7 is used to push the positioning post 5 to penetrate through the assembly hole 4 to complete the adjustment of the finger length.

[0031] During the process of the finger gripping and rotating an object, when the hinge seat on the rotating surface pushes the convex block 15 to contract, the contraction of the convex block 15 drives the conical plug 16 to move, creating a gap between the conical plug 16 and the conical oil storage cavity 13. The lubricating oil flows out through the gap, which can lubricate the hinge part of the finger, reduce the wear during the long-term movement of the finger, and improve the lifespan of the finger.

[0032] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art of the present utility model can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

Claims

1. A finger structure for a robot arm, comprising a finger shell (1) and a connecting seat (2), wherein the connecting seat (2) is nested and connected with the finger shell (1), characterized in that: A wear-resistant portion (3) is fixedly bonded to the end of the finger shell (1), an oil storage chamber (8) is provided inside the connecting seat (2), a hinge groove (9) is provided at one end of the connecting seat (2), and an oil seepage component is provided between the hinge groove (9) and the oil storage chamber (8).

2. A finger structure for a robotic arm according to claim 1, characterized in that: A rectangular groove (6) is provided at the other end of the connecting seat (2), and positioning columns (5) are inserted and connected on both sides of the rectangular groove (6), and a first return spring (7) is fixedly installed between the two positioning columns (5). A plurality of assembly holes (4) are equidistantly provided on both sides of the inner arm of the finger shell (1), and the two positioning columns (5) are inserted and connected with the corresponding assembly holes (4).

3. The finger structure for a robot arm according to claim 1, characterized in that: The oil seepage component comprises an oil seepage block (10) and an oil passage (12); an oil passage (12) is provided between the hinge groove (9) and the oil storage chamber (8); an oil seepage block (10) is fixedly installed at the connection point between the oil passage (12) and the oil storage chamber (8); and evenly distributed capillary pores (11) are provided on the surface of the oil seepage block (10).

4. A finger structure for a robotic arm according to claim 3, characterized in that: A truncated cone-shaped oil storage chamber (13) is provided in the middle of the oil passage (12), a truncated cone-shaped sealing block (16) is nested and connected inside the truncated cone-shaped oil storage chamber (13), a second return spring (14) is fixedly mounted on one end of the truncated cone-shaped sealing block (16), and one end of the second return spring (14) is fixedly connected to the bottom end of the truncated cone-shaped oil storage chamber (13).

5. A finger structure for a robot arm according to claim 4, characterized in that: A protrusion (15) is fixedly connected to the center of the other end of the truncated cone-shaped blocking block (16), and one end of the protrusion (15) passes through the oil passage (12) and extends to the interior of the hinge groove (9).

6. A finger structure for a robot arm according to claim 1, characterized in that: An oil filling hole is provided on one side of the oil storage cavity (8), and a sealing plug is nested inside the oil filling hole.

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