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Workpiece clamping mechanism

A clamping mechanism and workpiece clamping technology, which is applied in the direction of manufacturing tools, electric processing equipment, metal processing equipment, etc., can solve the problems of high work intensity, affecting processing efficiency, and cannot be fixed, and achieve high repositioning accuracy, simple structure, Strong clamping effect

Inactive Publication Date: 2015-03-25
CHENGDU HONGSHAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing fixtures cannot meet the above requirements at the same time: although some can be clamped firmly, after each workpiece is clamped, repeated side alignment and centering operations are required, which not only increases the work intensity, but also affects the processing efficiency; Although some can be easily loaded and unloaded, the center of rotation is easy to change when the workpiece is rotating, which affects the processing quality; although some can be positioned accurately, they cannot be applied to blank workpieces of different sizes, so that they cannot be fixed.

Method used

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Effect test

Embodiment 1

[0015] Such as Figure 1 to Figure 2 As shown, the workpiece clamping mechanism includes a support plate 3, an elastic member 4, a support cylinder 1 with an open upper end and a closed lower end, and a positioning cylinder 2 coaxially arranged with the support cylinder 1 and having openings at both ends of the upper and lower ends; the support plate 3 is located in the support cylinder 1, the support plate 3 is provided with a first port 7, the center line of the first port 7 overlaps with the axis of the support cylinder 1, and the upper and lower ends of the elastic member 4 are respectively connected to the lower end surface of the support plate 3 and the support cylinder. The bottom of the inner wall of 1 is fixed, and the positioning cylinder 2 is set outside the support cylinder 1. The upper end of the positioning cylinder 2 is provided with a plurality of jaws 5 for positioning the apex of the workpiece. The inner surface of the jaws 5 gradually moves toward the positio...

Embodiment 2

[0019] This embodiment makes the following further limitations on the basis of Embodiment 1: the lower end surface of the support plate 3 is fixedly connected with the limit cylinder 6 which guides the support plate 3 and is arranged coaxially with the support cylinder 1, the limit cylinder 6 The lower end is located in the support cylinder 1. In this embodiment, the upper end of the elastic member 4 can be located in the limiting cylinder 6 . In order to achieve a good and stable guiding function, the outer wall of the limiting cylinder 6 and the inner wall of the supporting cylinder 1 should fit as closely as possible and it should also be ensured that the limiting cylinder 6 can move up and down relative to the supporting cylinder 1 .

Embodiment 3

[0021] In this embodiment, the following further limitations are made on the basis of Embodiment 1: the positioning cylinder 2 and the support cylinder 1 are threaded. In this embodiment, the inner wall of the positioning cylinder 2 may be provided with internal threads, the outer wall of the support cylinder 1 may be provided with external threads matching the internal threads, and the positioning cylinder 2 is sleeved on the support cylinder 1 through threads. In application, if the thickness of the workpiece is large, the positioning cylinder 2 can be rotated to move upward relative to the support cylinder 1; if the thickness of the workpiece is small, the operation is reversed.

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Abstract

The invention discloses a workpiece clamping mechanism which comprises a supporting plate, an elastic piece, a supporting barrel and a locating barrel. The upper end of the supporting barrel is open, the lower end of the supporting barrel is closed, the locating barrel and the supporting barrel are arranged coaxially, and the upper end and the lower end of the locating barrel are open. The supporting plate is located above the supporting barrel, a first through opening is formed in the supporting plate, the center line of the first through opening and the axis of the supporting barrel are overlapped, the upper end and the lower end of the elastic piece are fixedly connected with the lower end face of the supporting plate and the bottom of the inner wall of the supporting barrel respectively, the supporting barrel is sleeved with the locating barrel, a plurality of clamping jaws used for locating top points of workpieces are arranged at the upper end of the locating barrel, and the inner side faces of the clamping jaws are gradually inclined towards the axis of the locating barrel from bottom to top. The workpiece clamping mechanism has the advantages that clamping is convenient and firm, relocating precision is high, good universality is achieved, and the structure is simple.

Description

technical field [0001] The invention relates to the field of electric discharge machining, in particular to a workpiece clamping mechanism. Background technique [0002] EDM is based on the electro-corrosion phenomenon generated when the pulse discharge between the two electrodes is used to remove material. In order to ensure the processing quality, fixtures are required to position and fix the workpiece during EDM, so as to avoid the position deviation of the workpiece when it is impacted by the working fluid or disturbed by the outside world. This requires that the fixture can not only be firmly clamped and positioned accurately, but also be easy to assemble and disassemble. However, the existing fixtures cannot meet the above requirements at the same time: although some can be clamped firmly, after each workpiece is clamped, repeated side alignment and centering operations are required, which not only increases the work intensity, but also affects the processing efficien...

Claims

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Application Information

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IPC IPC(8): B23H11/00B23H1/00
CPCB23H11/003B23H1/00
Inventor 曾维亮
Owner CHENGDU HONGSHAN TECH
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