Semi-automatic handheld polishing clamp

Abstract

The utility model relates to a semi-automatic handheld polishing clamp which is provided with a clamp body and a handle. A clamping head is installed at one end of the clamp body, a connecting base is arranged on the clamp body, the clamping head comprises an installing base connected to the connecting base in a sleeving mode and a plurality of clamping blocks, the clamping blocks and the installing base are integrally formed, gaps are formed between the clamping blocks, a driving hole is formed in the intersection position of the clamping blocks, and a driving assembly is further arranged in the clamp body. The driving assembly comprises a driving through groove, a driving mounting base, a driving rod and a driving spring, a brake bottom cover is arranged on the clamp body, a side edge base is arranged on the side edge of the clamp body, a side groove is formed in the side edge base, and a brake rod is arranged in the side groove; the driving rod continuously exerts force on the driving installation base through the driving spring, penetrates out of the connecting base and stretches into the driving hole to open the clamping blocks, and the opened clamping blocks retract after the brake rod drives the driving installation base to press downwards and simultaneously drives the driving rod to press downwards and is separated from the driving hole. The device is ingenious in structure, efficient and convenient.

Description

Technical Field

[0001] The utility model relates to the field of semi - automatic polishing, and particularly relates to a semi - automatic handheld polishing fixture. Background Technique

[0002] The surface treatment and polishing process has a wide range of applications, including materials such as metals, plastics, ceramics, etc. Surface treatment is a process method of forming a surface layer with different mechanical, physical, and chemical properties from the substrate on the surface of the substrate material. The purpose of surface treatment is to meet the requirements of product wear resistance, corrosion resistance, decoration, and other special functional requirements. For metal parts, the more common surface treatment is polishing and grinding. Polishing and grinding is to remove burrs, oil stains, oxide layers, etc. from the surface of the workpiece. It makes the workpiece reach a mirror effect and is a pre - treatment process for subsequent processes such as spraying, electroplating, electrophoresis, and PVD.

[0003] Currently, most of the mainstream polishing is manual. The harm of polishing dust to the human body, and the uneven force in manual polishing lead to uneven product consistency. For workpieces with structural requirements, the contour and R - angle consistency cannot meet the requirements. And currently, a small number of mechanical polishing methods on the market have defects at the technical level. During the mechanical polishing process, generally, the workpiece is manually grasped and then polished on the polishing disc. However, in this polishing method, the workpiece will shift under the external force generated by polishing, unable to ensure the accuracy and precision of polishing, which greatly affects the polishing effect of the workpiece and is very inconvenient. Content of the Utility Model

[0004] The purpose of the utility model is

[0005] The technical solution for achieving the purpose of the present utility model is as follows: The present utility model has a fixture main body and a handle fixed on the fixture main body; one end of the fixture main body is provided with a chuck for supporting a workpiece, the fixture main body is provided with a connecting seat integrally formed with and coaxially arranged with the fixture main body, the chuck includes a mounting seat sleeved on the connecting seat, and a plurality of clamping blocks circumferentially distributed along the axis of the mounting seat at the upper end of the mounting seat. Each clamping block is integrally formed with the mounting seat and there is a gap between each clamping block. A driving hole is provided at the intersection of each clamping block. A driving assembly capable of driving each clamping block to expand or retract simultaneously is further provided inside the fixture main body. The driving assembly includes a driving through groove provided on the fixture main body, a driving mounting seat slidably arranged in the driving through groove, a driving rod detachably mounted in the driving mounting seat and one end of which can extend into the driving hole, and a driving spring provided in the driving through groove. A brake bottom cover capable of closing the bottom end of the driving through groove is mounted at one end of the fixture main body away from the connecting seat. A side seat integrally formed with the fixture main body is provided on the side of the fixture main body. A side groove communicating with the driving through groove is provided in the side seat. A brake rod is provided in the side groove. The diameter of the side groove is larger than that of the brake rod. One end of the brake rod is located outside the fixture main body. The other end of the brake rod passes through the side groove and extends into the driving through groove and is rotatably connected to the driving mounting seat. The two ends of the driving spring respectively act on the driving mounting seat and the brake bottom cover. The driving rod continuously applies force to the driving mounting seat through the driving spring, passes through the connecting seat and extends into the driving hole to expand each clamping block. Each expanded clamping block drives the driving rod to press down while driving the driving mounting seat to press down by the brake rod, and retracts after disengaging from the driving hole.

[0006] Further, a driving through hole for the driving rod to extend is provided on the above-mentioned connecting seat. The driving through hole communicates with the driving through groove. The inner diameter of the driving through hole is smaller than that of the driving through groove. The driving through hole and the driving through groove form a limiting step for limiting the upward movement of the driving mounting seat. A pointed ejecting portion is provided on the driving rod. After the driving rod passes through the driving through hole and extends into the driving hole along with the ejecting portion, it ejects each clamping block and clamps the inner wall of the workpiece.

[0007] Further, a threaded mounting hole coaxially arranged with the driving through groove is provided in the above-mentioned driving mounting seat. An external threaded portion is provided at one end of the driving rod away from the ejecting portion. The driving rod is detachably fixed on the driving mounting seat through the threaded fit between the external threaded portion and the threaded mounting hole.

[0008] Further, the cross-section of each clamping block is in an inverted L shape.

[0009] Furthermore, a rotating seat is provided on the side of the above-mentioned drive mounting seat, and the brake rod includes a straight rod portion and a bent rod portion integrally formed with the straight rod portion, one end of the straight rod portion is rotatably connected to the rotating seat, the other end of the straight rod portion is fixedly connected to the bent rod portion, and the other end of the bent rod portion is bent in the direction toward the brake bottom cover.

[0010] Furthermore, the handle is provided with a plurality of anti-slip grooves coaxially arranged with the handle.

[0011] The utility model has positive effects: (1) The utility model sets a driving assembly on the clamp body, and the driving rod passes through the connecting seat and extends into the driving hole through the continuous force of the driving spring on the driving mounting seat to stretch out each clamping block. When the brake rod drives the driving mounting seat to be pressed down and the driving rod is pressed down at the same time, and the clamping blocks are retracted after being disengaged from the driving hole. The workpiece is clamped by the simultaneous expansion of each clamping block on the chuck, thereby ensuring the positioning of the workpiece and the stability of the positioning, effectively solving the problem of the inability to position the workpiece in the prior art and greatly affecting the quality and efficiency of polishing. By expanding or retracting the clamping blocks at the same time, on the one hand, the workpiece can be quickly positioned and installed or disassembled or replaced after polishing, and on the other hand, the stability of the workpiece during the polishing process can be greatly improved, thereby ensuring the efficiency and quality of workpiece polishing. The structure is ingenious and stable and practical.

[0012] (2) The utility model provides a driving through hole connected to the driving through groove on the connecting seat, and forms a limiting step. On the one hand, the driving mounting seat can be limited to prevent the driving mounting seat from being separated from the connecting seat. On the other hand, the ejection part on the driving rod can be inserted into the driving hole to prevent the ejection part from being limited and plugged into the driving hole, thereby preventing each clamping block from pressing excessively on the workpiece. The utility model is stable and practical.

[0013] (3) The utility model provides a threaded mounting hole on the driving mounting seat and an external threaded portion on the driving rod. The driving rod is detachably connected through the cooperation of the threaded mounting hole and the external threaded portion, thereby realizing rapid installation, disassembly or replacement of the driving rod, which is convenient and practical.

[0014] (4) The utility model provides a rotating seat on the side of the driving mounting seat, and one end of the straight rod portion is rotatably connected to the rotating seat. Because the diameter of the side groove is larger than the diameter of the driving rod, the straight rod portion can drive the driving mounting seat to descend through the lever principle. The bent rod portion is provided on the driving rod, which can facilitate the operator to apply force to the brake rod and drive the driving mounting seat, which is convenient and practical.

[0015] (5) The utility model can increase the friction between the handle and the operator's grasping hand by providing anti-slip grooves on the handle, thereby ensuring the stability of the operator when grasping the clamp body, which is convenient and practical. Brief Description of the Drawings

[0016] In order to make the content of the present utility model easier to be clearly understood, the following further detailed description of the present utility model is given according to specific embodiments in conjunction with the accompanying drawings, wherein

[0017] Figure 1 is a schematic diagram of the overall structure of the semi - automatic hand - held polishing fixture in the present utility model;

[0018] Figure 2 is a cross - sectional view of the overall structure of the semi - automatic hand - held polishing fixture in the present utility model;

[0019] Figure 3 is a cross - sectional view of the overall structure of the fixture body in the present utility model;

[0020] Figure 4 is a cross - sectional view of the connection structure between the drive mounting seat and the brake rod in the present utility model;

[0021] Figure 5 is Figure 4 an enlarged view of part A in

[0022] Figure 6 is a schematic diagram of the overall structure of the chuck in the present utility model. Detailed Description of the Preferred Embodiments

[0023] See Figures 1 to 6, the utility model has a fixture main body 1 and a handle 12 fixed on the fixture main body 1; one end of the fixture main body 1 is installed with a chuck 2 that can support a workpiece, the fixture main body 1 is provided with a connecting seat 10 integrally formed with and coaxially arranged with the fixture main body 1, the chuck 2 includes a mounting seat 21 sleeved on the connecting seat 10 and a plurality of clamping blocks 22 circumferentially distributed along the axis of the mounting seat 21 at the upper end of the mounting seat 21, each clamping block 22 is integrally formed with the mounting seat 21 and there is a gap 23 between each clamping block 22, a driving hole 24 is provided at the intersection of each clamping block 22, and a driving component 4 that can drive each clamping block 22 to expand or retract simultaneously is further provided in the fixture main body 1. The driving component 4 includes a driving through groove 41 provided on the fixture main body 1, a driving mounting seat 42 slidably arranged in the driving through groove 41, a driving rod 43 detachably installed in the driving mounting seat 42 and one end of which can extend into the driving hole 24, and a driving spring 44 arranged in the driving through groove 41. One end of the fixture main body 1 far from the connecting seat 10 is installed with a brake bottom cover 11 that can close the bottom end of the driving through groove 41. A side seat 13 integrally formed with the fixture main body 1 is provided on the side of the fixture main body 1. A side groove 14 communicated with the driving through groove 41 is provided in the side seat 13. A brake rod 3 is provided in the side groove 14. The diameter of the side groove 14 is larger than the diameter of the brake rod 3. One end of the brake rod 3 is located outside the fixture main body 1. The other end of the brake rod 3 passes through the side groove 14 and extends into the driving through groove 41 and then is rotatably connected with the driving mounting seat 42. The two ends of the driving spring 44 act on the driving mounting seat 42 and the brake bottom cover 11 respectively. The driving rod 43 continuously applies force to the driving mounting seat 42 through the driving spring 44, passes through the connecting seat 10 and extends into the driving hole 24 to expand each clamping block 22. When each expanded clamping block 22 drives the driving mounting seat 42 to press down under the drive of the brake rod 3, the driving rod 43 is also driven to press down and retracts after disengaging from the driving hole 24.

[0024] The connecting seat 10 is provided with a driving through hole 45 for the driving rod 43 to extend out. The driving through hole 45 is communicated with the driving through groove 41. The inner diameter of the driving through hole 45 is smaller than the inner diameter of the driving through groove 41. The driving through hole 45 and the driving through groove 41 form a limiting step 46 that can limit the upward movement of the driving mounting seat 42. The driving rod 43 is provided with a pointed ejecting portion 431. After the driving rod 43 passes through the driving through hole 45 and extends into the driving hole 24 along with the ejecting portion 431, it ejects each clamping block 22 and clamps the inner wall of the workpiece.

[0025] The driving mounting seat 42 is provided with a threaded mounting hole 421 coaxially arranged with the driving through groove 41. One end of the driving rod 43 far from the ejecting portion 431 is provided with an external threaded portion 432. The driving rod 43 is detachably fixed on the driving mounting seat 42 through the threaded cooperation between the external threaded portion 432 and the threaded mounting hole 421.

[0026] The cross-section of each clamping block 22 is in an inverted L shape.

[0027] A rotating seat 47 is provided on the side of the driving mounting seat 42. The brake rod 3 includes a straight rod portion 31 and a bent rod portion 32 integrally formed with the straight rod portion 31. One end of the straight rod portion 31 is rotatably connected to the rotating seat 47, the other end of the straight rod portion 31 is fixedly connected to the bent rod portion 32, and the other end of the bent rod portion 32 is bent towards the direction of the brake bottom cover 11.

[0028] A plurality of anti-slip lines 121 coaxial with the handle 12 are provided on the handle 12.

[0029] The working principle of the present utility model: During the use of the present utility model, an operator can select a suitable chuck 2 according to the size of the workpiece and install it on the connecting seat 10 of the fixture main body 1. Then, the driving rod 43 is fixed on the driving mounting seat 42 through the cooperation of the external thread portion 432 and the threaded mounting hole 421. An operator holds the handle 12 and the brake rod 3 with one hand, and the brake rod 3 drives the driving mounting seat 42 to press down against the elastic force of the driving spring 44. The driving rod 43 on the driving mounting seat 42 is disengaged from the driving holes 24 between the clamping blocks 22. Then, each clamping block 22 retracts by its own elasticity. Then, the workpiece is placed on the chuck 2, and then the brake rod 3 is released. The driving mounting seat 42 is lifted under the continuous force of the driving spring 44. During the lifting process, the side of the driving mounting seat 42 is slidably limited by leaning against the limiting step 46. After the driving mounting seat 42 reaches the limiting step 46, the driving rod 43 on the driving mounting seat 42 presses against the driving hole 24. After the ejecting portion 431 on the driving rod 43 extends into the driving hole 24, each clamping block 22 is simultaneously ejected outwards, so as to clamp the workpiece on the chuck 2. Then, the workpiece can be polished obliquely at 45 degrees to the polishing wheel. After the polishing is completed, the driving rod 43 is driven to be disengaged from the driving hole 24 by driving the brake rod 3, and each clamping block 22 retracts. Then, the polished workpiece is taken off, and then other workpieces to be polished are installed, effectively solving the problem that the workpiece cannot be positioned in the prior art, thus affecting the overall processing effect and processing quality of the workpiece, greatly improving the polishing efficiency and polishing quality of the workpiece, with a clever structure, high efficiency and convenience.

[0030] In the above specific embodiments, the purpose, technical solution and beneficial effects of the present utility model are further described in detail. It should be understood that the above are only specific embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A semi-automatic hand-held polishing fixture, characterized in that: The tool holder is provided with a clamp body and a handle fixed on the clamp body; a clamp head for supporting the workpiece is installed at one end of the clamp body, a connecting seat which is integrally formed with the clamp body and coaxially arranged, the clamp head comprises a mounting seat sleeved on the connecting seat, and a plurality of clamping blocks distributed on the upper end of the mounting seat along the axis of the mounting seat, each clamping block is integrally formed with the mounting seat and a gap is arranged between each clamping block, a driving hole is arranged at the intersection of each clamping block, and a driving component which can drive each clamping block to expand or retract at the same time is also arranged in the clamp body, and the driving component comprises a driving groove arranged on the clamp body, a driving mounting seat slidably arranged in the driving groove, a driving rod detachably mounted in the driving mounting seat and one end of which can extend into the driving hole, and a driving rod arranged in the driving groove. A driving spring, a brake bottom cover that can close the bottom end of the driving through groove is installed on the end of the clamp body away from the connecting seat, the side edge of the clamp body is provided with a side seat integrally formed with the clamp body, the side seat is provided with a side groove connected to the driving through groove, a brake rod is provided in the side groove, the diameter of the side groove is larger than the diameter of the brake rod, one end of the brake rod is located outside the clamp body, and the other end of the brake rod passes through the side groove and extends into the driving through groove and is rotatably connected to the driving mounting seat, the two ends of the driving spring act on the driving mounting seat and the brake bottom cover respectively, the driving rod passes through the connecting seat and extends into the driving hole through the continuous force of the driving spring on the driving mounting seat to stretch each clamp block, and each stretched clamp block retracts after the brake rod drives the driving mounting seat to be pressed down and the driving rod is pressed down at the same time, and is separated from the driving hole.

2. A semi-automatic hand-held polishing fixture according to claim 1, characterized in that: The connecting seat is provided with a driving through hole for the driving rod to extend out, the driving through hole is connected with the driving through slot, the inner diameter of the driving through hole is smaller than the inner diameter of the driving through slot, the driving through hole and the driving through slot form a limiting step that can limit the rise of the driving mounting seat, and the driving rod is provided with a pointed ejection portion. After the driving rod passes through the driving through hole, the ejection portion extends into the driving hole to eject each clamping block and clamp the inner wall of the workpiece.

3. A semi-automatic hand-held polishing fixture according to claim 2, characterized in that: The drive mounting seat is provided with a threaded mounting hole coaxially arranged with the drive through groove, and the end of the drive rod away from the ejection part is provided with an external threaded portion. The drive rod is detachably fixed to the drive mounting seat through the threaded cooperation between the external threaded portion and the threaded mounting hole.

4. A semi-automatic hand-held polishing fixture according to claim 3, characterized in that: The cross section of each clamping block is inverted L-shape.

5. A semi-automatic hand-held polishing fixture according to claim 1, characterized in that: A rotating seat is provided on the side of the driving mounting seat, and the brake rod includes a straight rod portion and a bent rod portion integrally formed with the straight rod portion. One end of the straight rod portion is rotatably connected to the rotating seat, and the other end of the straight rod portion is fixedly connected to the bent rod portion, and the other end of the bent rod portion is bent in the direction toward the brake bottom cover.

6. A semi-automatic hand-held polishing fixture according to claim 1, characterized in that: The handle is provided with a plurality of anti-slip grooves coaxially arranged with the handle.

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