CN215548758U

CN215548758U - Mechanical arm for grabbing workpiece

Info

Publication number: CN215548758U
Application number: CN202121818939.0U
Authority: CN
Inventors: 乔云
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-05
Filing date: 2021-08-05
Publication date: 2022-01-18
Anticipated expiration: 2031-08-05

Abstract

The utility model provides a mechanical arm for grabbing workpieces, which relates to the technical field of mechanical arms and comprises a connecting block, a rotating shaft, a clamping block, a positioning hole, a rectangular block, a connecting seat and a clamping jaw, wherein the rotating shaft is rotated inside the connecting block, a circular groove is formed inside the rotating shaft, a spring is arranged on the surface of the circular groove, the clamping block is fixedly arranged at one end of the spring, a base is arranged on the surface of the rotating shaft, the positioning hole is formed in the surface of the base, the rectangular block is fixedly arranged on one side of the base, the connecting seat is arranged on both sides of the rectangular block, the clamping jaw is arranged on the surface of the connecting seat, and an auxiliary device is arranged on the surface of the clamping jaw. Meanwhile, the replacement method is simple and beneficial to practical use.

Description

Mechanical arm for grabbing workpiece

Technical Field

The utility model relates to the technical field of mechanical arms, in particular to a mechanical arm for grabbing a workpiece.

Background

The mechanical arm is an automatic mechanical device which is widely applied in the technical field of robots, and in daily workpiece processing, people usually use the mechanical arm to grab workpieces.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a mechanical arm for grabbing a workpiece.

In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a work piece snatchs uses robotic arm, includes connecting block, pivot, fixture block, locating hole, rectangular block, connecting seat and clamping jaw, the inside of connecting block is rotated there is the pivot, the circular slot has been seted up to the inside of pivot, the surface of circular slot is equipped with the spring, the fixture block is equipped with admittedly to the one end of spring, the surface of pivot is provided with the base, the locating hole has been seted up on the surface of base, one side fixed mounting of base has the rectangular block, the connecting seat all is equipped with to the both sides of rectangular block, the clamping jaw is equipped with on the surface of connecting seat, the surface of clamping jaw is provided with auxiliary device.

In order to enable the arm to rotate at different angles, the utility model has the improvement that the utility model also comprises an arm body and a rotating rod, wherein the surface of the arm body is rotated with the rotating rod, and one end of the rotating rod is fixedly connected with a connecting block.

In order to improve the stability of the rotating shaft and the base, the utility model improves that the number of the clamping blocks is two, and the two groups of the clamping blocks are symmetrically distributed on two sides of the rotating shaft.

In order to enable the clamping block to smoothly enter the positioning hole, the utility model improves that one side of the clamping block is arc-shaped, and the volume of the clamping block is the same as that of the positioning hole.

In order to improve the practicability of the clamping jaw, the auxiliary device comprises a heat-resistant layer and a wear-resistant layer, wherein the heat-resistant layer is arranged on the surface of the clamping jaw, and the wear-resistant layer is arranged on the surface of the heat-resistant layer.

In order to prolong the service life of the clamping jaw, the utility model improves that the heat-resistant layer is made of tungsten metal material and the wear-resistant layer is a ceramic fiber film.

Compared with the prior art, the utility model has the advantages and positive effects that,

1. in the utility model, when the clamping device is actually used, the clamping jaw is conveniently replaced by people through the arrangement of the connecting block, the rotating shaft, the clamping block, the positioning hole, the rectangular block, the connecting seat and the clamping jaw, so that the complicated situation that the arm body is replaced when people need to grab workpieces in different shapes is avoided, and meanwhile, the replacement method is simple and is beneficial to actual use.

2. In the utility model, when in actual use, the auxiliary device is arranged, so that the clamping jaw is prevented from deforming in use, the service life of the clamping jaw is prolonged, and the clamping jaw is beneficial to actual use.

Drawings

FIG. 1 is a schematic view of an overall structure of a robot arm for grabbing a workpiece according to the present invention;

FIG. 2 is an enlarged view of the portion A of the robot arm for grabbing a workpiece shown in FIG. 1 according to the present invention;

fig. 3 is a schematic cross-sectional view of a gripper of a robot arm for gripping a workpiece according to the present invention.

Illustration of the drawings:

1. an arm body; 2. a rotating rod; 3. connecting blocks; 4. a rotating shaft; 5. a circular groove; 6. a spring; 7. a clamping block; 8. a base; 9. positioning holes; 10. a rectangular block; 11. a connecting seat; 12. a clamping jaw; 13. a heat-resistant layer; 14. and a wear-resistant layer.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.

Referring to fig. 1-3, the present invention provides a technical solution: a mechanical arm for workpiece grabbing comprises a connecting block 3, a rotating shaft 4, a clamping block 7, a positioning hole 9, a rectangular block 10, a connecting seat 11 and a clamping jaw 12, wherein the rotating shaft 4 rotates inside the connecting block 3, a circular groove 5 is formed inside the rotating shaft 4, a spring 6 is arranged on the surface of the circular groove 5, the clamping block 7 is fixedly arranged at one end of the spring 6, one side of the clamping block 7 is arc-shaped, the size of the clamping block 7 is the same as that of the positioning hole 9, one side of the clamping block 7 is arc-shaped, when the clamping block 7 moves to the position of a base 8, the clamping block 7 can be attached to the inner wall of the base 8 to enter the positioning hole 9, meanwhile, the contact area between the clamping block 7 and the positioning hole 9 is increased through arranging the clamping block 7 and the positioning hole 9 which are the same in size, so that the clamping block 7 is in full contact with the positioning hole 9, the stability of the clamping block 7 is improved, the base 8 is arranged on the surface of the rotating shaft 4, the positioning hole 9 is formed in the surface of the base 8, one side fixed mounting of base 8 has rectangular block 10, and connecting seat 11 is all equipped with to the both sides of rectangular block 10, and clamping jaw 12 is equipped with on the surface of connecting seat 11, and the surface of clamping jaw 12 is provided with auxiliary device.

The quantity of fixture block 7 is two sets of, and two sets of fixture block 7 symmetric distribution is in the both sides of pivot 4, through setting up fixture block 7, has played the effect of fixing base 8 on pivot 4 surface to make things convenient for people to replace the clamping jaw 12 of different shapes, through setting up multiunit fixture block 7, improved base 8's stability, make its laminating that can be firm on pivot 4.

Still include arm body 1 and bull stick 2, the surface rotation of arm body 1 has bull stick 2, and the one end fixedly connected with connecting block 3 of bull stick 2, people make bull stick 2 drive connecting block 3 and rotate through controlling arm body 1, make pivot 4 drive clamping jaw 12 simultaneously and rotate to the work piece of different positions is got.

The auxiliary device comprises a heat-resistant layer 13 and a wear-resistant layer 14, the heat-resistant layer 13 is arranged on the surface of the clamping jaw 12, the wear-resistant layer 14 is arranged on the surface of the heat-resistant layer 13, the heat-resistant layer 13 is made of tungsten metal materials, the wear-resistant layer 14 is made of ceramic fiber films, tungsten gold is fully called tungsten carbide alloy, tungsten steel is called in the industrial field, and one of the hardest metal materials in the world has higher toughness, so that the clamping jaw 12 is prevented from being worn with a workpiece in daily operation of the clamping jaw 12, the service life of the clamping jaw 12 is prolonged, and the ceramic fiber is a fibrous light refractory material and has the advantages of light weight, high temperature resistance, good thermal stability, low thermal conductivity, small specific heat, mechanical shock resistance and the like.

The working principle is as follows: by arranging the connecting block 3, the rotating shaft 4, the fixture block 7, the positioning hole 9, the rectangular block 10, the connecting seat 11 and the clamping jaw 12, when people need to process workpieces with different shapes, the fixture block 7 is pressed at the moment to be moved out of the positioning hole 9, then the base 8 is pulled, the base 8 drives the rectangular block 10 and the connecting seat 11 to be separated from the surface of the rotating shaft 4, the clamping jaws 12 with different shapes can be replaced by people at the moment, when people need to replace the clamping jaw 12, only the base 8 is inserted into the surface of the rotating shaft 4, the fixture block 7 is extruded to drive the spring 6 to move, when the fixture block 7 moves to the position of the positioning hole 9, the spring 6 drives the fixture block 7 to reset, the effect of fixing the clamping jaw 12 is achieved, at the moment, people can control the arm body 1, the rotating rod 2 drives the connecting block 3 to rotate, the rotating shaft 4 drives the clamping jaw 12 to rotate, so as to clamp workpieces with different positions, through setting up auxiliary device, through setting up heat-resistant layer 13, produce the condition of warping after the work piece of high temperature is snatched for a long time at clamping jaw 12 to influence the stability that clamping jaw 12 snatched, simultaneously through setting up wearing layer 14, avoid clamping jaw 12 to produce the condition of wearing and tearing with work piece contact surface for a long time.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.

Claims

1. The utility model provides a work piece snatchs uses robotic arm, includes connecting block (3), pivot (4), fixture block (7), locating hole (9), rectangular block (10), connecting seat (11) and clamping jaw (12), its characterized in that: the inside of connecting block (3) is rotated and is had pivot (4), circular slot (5) have been seted up to the inside of pivot (4), spring (6) are equipped with on the surface of circular slot (5), fixture block (7) are equipped with admittedly to the one end of spring (6), the surface of pivot (4) is provided with base (8), locating hole (9) have been seted up on the surface of base (8), one side fixed mounting of base (8) has rectangular block (10), connecting seat (11) all are equipped with to the both sides of rectangular block (10), clamping jaw (12) are equipped with on the surface of connecting seat (11), the surface of clamping jaw (12) is provided with auxiliary device.

2. A robot arm for gripping a workpiece as set forth in claim 1, wherein: still include arm body (1) and bull stick (2), the surface rotation of arm body (1) has bull stick (2), the one end fixedly connected with connecting block (3) of bull stick (2).

3. A robot arm for gripping a workpiece as set forth in claim 1, wherein: the number of the clamping blocks (7) is two, and the two clamping blocks (7) are symmetrically distributed on two sides of the rotating shaft (4).

4. A robot arm for gripping a workpiece as set forth in claim 3, wherein: one side of the clamping block (7) is arc-shaped, and the volume of the clamping block (7) is the same as that of the positioning hole (9).

5. A robot arm for gripping a workpiece as set forth in claim 1, wherein: the auxiliary device comprises a heat-resistant layer (13) and a wear-resistant layer (14), wherein the heat-resistant layer (13) is arranged on the surface of the clamping jaw (12), and the wear-resistant layer (14) is arranged on the surface of the heat-resistant layer (13).

6. The robot arm for gripping a workpiece according to claim 5, wherein: the heat-resistant layer (13) is made of tungsten metal materials, and the wear-resistant layer (14) is a ceramic fiber film.