Internal expansion type automatic polishing clamp

Abstract

An internal expansion type automatic polishing clamp relates to the technical field of polishing equipment and comprises a mounting frame, an expansion chuck, an expansion block, an expansion air cylinder and an internal expansion connecting rod, the expansion chuck is fixed on the front side of the mounting frame, a through hole is formed in the center of the expansion chuck, and the inner wall of the outer end of the through hole is arranged to be an inner circular truncated cone surface; a connecting hole is formed in the inner end of the tensioning block, the outer wall of the inner end of the tensioning block is arranged to be an outer circular truncated cone face, the tensioning air cylinder is fixed in the installation frame, the inner end of the inner tensioning connecting rod is connected with the movable end of the tensioning air cylinder, and the outer end of the inner tensioning connecting rod penetrates through a through hole of the tensioning chuck and is fixedly connected with the tensioning block through the connecting hole. The polishing clamp is light in structure, convenient to assemble and wide in applicable product type, machining stability is greatly improved, and development cost of the clamp is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to polishing equipment technical field, especially a kind of inner expansion type automatic polishing fixture. BACKGROUND

[0002] Automatic polishing machine is a kind of electric tool, mainly used for the full-automatic surface polishing treatment to workpiece, suitable for small workpiece, metal workpiece full-automatic polishing surface gloss and deburring.

[0003] The existing automatic polishing fixture is mostly lever type clamp, through the cooperation of the connection of top rod and cylinder, when the cylinder ejects one end of top rod, force is transmitted to the other end through the fixed pin in the middle of top rod to clamp product. The problem is that the contact area of clamp top rod and product is small, not easy to clamp, and processing stability is poor. And because of adopting lever principle, certain displacement stroke is needed, which leads to the inability to process relatively small products, and in order to form simple lever transmission, cylinder and top rod must be installed at 90 ° right angle, which increases the assembly restriction. SUMMARY

[0004] The utility model discloses a kind of inner expansion type automatic polishing fixtures to solve the deficiency of the above-mentioned prior art, structure is light, easy to assemble, adapt to product type widely, greatly improve the processing stability, reduce the development cost of clamp.

[0005] To achieve the above object, the technical scheme adopted by the utility model is as follows:

[0006] An inner expansion type automatic polishing fixture, comprising a mounting frame, a tensioning chuck, a tensioning block, a tensioning cylinder and an inner expansion connecting rod, the tensioning chuck is fixed on the front side of the mounting frame, a through hole is provided in the center of the tensioning chuck, the outer end of the through hole is provided with an inner circular table, a connecting hole is provided in the inner end of the tensioning block, and the outer wall of the inner end is provided with an outer circular table, the tensioning cylinder is fixed in the mounting frame, the inner end of the inner expansion connecting rod is connected with the movable end of the tensioning cylinder, and the outer end passes through the through hole of the tensioning chuck and is fixedly connected with the tensioning block through the connecting hole. When working, the product to be polished is sleeved on the outer end of the tensioning chuck, the outer circular table of the tensioning block abuts against the inner circular table of the tensioning chuck, the tensioning cylinder drives the inner expansion connecting rod to move backward, and the tensioning block moves to expand the tensioning chuck, so as to fix the product, and then the polishing process can be carried out.

[0007] Preferably, the inner end of the tensioning chuck is provided with a flange plate, and the tensioning chuck is fixedly connected with the mounting frame through the flange plate.

[0008] As preferred, the outer end of the tensioning chuck is provided with a two-section structure of different diameters, and a step is formed between the two-section structure. The end size of the tensioning chuck is small, and meets the requirement of processing small-size products, and the step structure plays a limiting role.

[0009] As preferred, the outer end of the tensioning block is provided with a convex ring, and the tensioning block is moved inwards to the inner side of the convex ring and abuts against the outer end surface of the tensioning chuck, thereby playing a limiting role.

[0010] As preferred, the rear side of the mounting frame is provided with a mechanical arm connecting angle plate, which comprises a rectangular plate fixed on the rear side of the mounting frame and a triangular plate on one side of the rectangular plate. The mechanical arm connecting angle plate is connected with the mechanical arm, thereby meeting the requirement of automatic polishing.

[0011] The polishing clamp of the utility model has the advantages of light structure, convenient assembly, wide product type adaptation, greatly improved processing stability and reduced clamp development cost.

[0012] The polishing clamp adopts an inner tensioning clamping mode, the inner tensioning chuck can be designed according to the size of the product inner cavity, and the problem of being unable to process small products is solved.

[0013] The inner tensioning chuck is clamped by being expanded by whole circumference force, has a larger contact area, is more uniformly stressed, and can also protect products with low hardness from being easily deformed. In addition, the clamp and the air cylinder only need to be installed on the same center line, and the clamping is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is the perspective view of the utility model;

[0015] Figure 2 is the front view of the utility model;

[0016] Figure 3 is the sectional view of the utility model;

[0017] Figure 4 is the perspective view of the tensioning chuck in the utility model;

[0018] Figure 5 is the sectional view of the tensioning chuck in the utility model;

[0019] Figure 6 is the perspective view of the tensioning block in the utility model.

[0020] Main element symbol explanation in the figure: 10, mounting frame;

[0021] 20, tensioning chuck; 21, inner circular table surface; 22, flange flange disc; 23, step;

[0022] 30. Tensioner block; 31. Connecting hole; 32. Outer cylindrical platform; 33. Protruding ring;

[0023] 40. Tensioning cylinder;

[0024] 50. Internal expansion connecting rod;

[0025] 60. Robotic arm connecting angle plate. Detailed Implementation

[0026] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0027] Example 1: As Figures 1-3 As shown, an internally expanding automatic polishing fixture includes a mounting frame 10, a tensioning chuck 20, a tensioning block 30, a tensioning cylinder 40, and an internally expanding connecting rod 50.

[0028] Combination Figures 4-5 As shown, the tensioning clamp 20 is fixed to the front side of the mounting frame 10. The tensioning clamp 20 has a through hole at its center, and the inner wall of the outer end of the through hole is set as an inner circular platform 21.

[0029] Combination Figure 6 As shown, the tensioning block 30 has a connecting hole 31 at its inner end and an outer circular platform 32 on its inner outer wall.

[0030] Combination Figure 3 As shown, the tensioning cylinder 40 is fixed inside the mounting frame 10. The inner end of the inner tensioning connecting rod 50 is connected to the movable end of the tensioning cylinder 40, and the outer end passes through the through hole of the tensioning clamp 20 and is fixedly connected to the tensioning block 30 through the connecting hole 31.

[0031] Example 2: Combination Figures 4-5 As shown, based on Embodiment 1, the inner end of the tensioning clamp 20 is provided with a flange plate 22, and the tensioning clamp 20 is fixedly connected to the mounting frame 10 through the flange plate 22.

[0032] Example 3: Combination Figures 4-5 As shown, based on Embodiment 1 or Embodiment 2, the outer end of the tensioning clamp 20 is configured as a two-section structure with different diameters, and a step 23 is formed between the two sections.

[0033] Combination Figure 6 As shown, the outer end of the tensioning block 30 is provided with a protruding ring 33.

[0034] Example 4: Combination Figures 1-3As shown, on the basis of embodiment one, embodiment two or embodiment three, a mechanical arm connecting angle plate 60 is arranged at the rear side of the mounting frame 10, and the mechanical arm connecting angle plate 60 comprises a rectangular plate fixed at the rear side of the mounting frame 10 and a triangular plate at one side of the rectangular plate.

[0035] The above merely describes specific embodiments of the present application, but the structural features of the present application are not limited thereto, and the present application can be used in similar products, and any changes or modifications made by those skilled in the art within the scope of the present application are encompassed in the patent range of the present application.

Claims

1. An internally expanding automatic polishing fixture, characterized in that: Includes mounting frame (10), tensioning clamp (20), tensioning block (30), tensioning cylinder (40) and internal tensioning connecting rod (50); The tensioning clamp (20) is fixed to the front side of the mounting frame (10). The tensioning clamp (20) has a through hole in the center, and the inner wall of the outer end of the through hole is set as an inner round table (21). The tensioning block (30) has a connecting hole (31) at its inner end and an outer wall of its inner end is a frustum (32). The tensioning cylinder (40) is fixed inside the mounting frame (10). The inner end of the inner tensioning connecting rod (50) is connected to the movable end of the tensioning cylinder (40), and the outer end passes through the through hole of the tensioning clamp (20) and is fixedly connected to the tensioning block (30) through the connecting hole (31).

2. The internal expansion type automatic polishing fixture according to claim 1, characterized in that: The inner end of the tensioning clamp (20) is provided with a flange plate (22), and the tensioning clamp (20) is fixedly connected to the mounting frame (10) through the flange plate (22).

3. The internal expansion type automatic polishing fixture according to claim 1, characterized in that: The outer end of the tensioning clamp (20) is configured as a two-section structure with different diameters, and a step (23) is formed between the two sections.

4. The internal expansion type automatic polishing fixture according to claim 3, characterized in that: The outer end of the tensioning block (30) is provided with a protruding ring (33).

5. An internally expanding automatic polishing fixture according to any one of claims 1-4, characterized in that: The mounting frame (10) is provided with a robotic arm connecting angle plate (60) on the rear side. The robotic arm connecting angle plate (60) includes a rectangular plate fixed to the rear side of the mounting frame (10) and a triangular plate on one side of the rectangular plate.

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