A high-precision two-petal flat chuck device

Abstract

The invention relates to a high-precision two-part flat chuck device, and mainly solves the problems of weak symmetry degree in secondary machining of precise parts, easy generation of center position deviation in repeated clamping and influence on machining precision caused by weak stability and low precision. The high-precision two-part flat chuck device comprises a base, a cylinder, a slide plate, a first clamping plate and a second clamping plate, wherein the cylinder is connected with the slide plate; the slide plate is in slide fit with a slide rail of the base; an accommodating groove is formed in the slide plate; the two clamping plates are symmetrically distributed in the accommodating groove along the center of the slide plate; the side surfaces of the clamping plates are inclined surfaces; and rollers in extrusion fit with the inclined surfaces of the clamping plates are arranged at the two sides of the slide plate. As the slide plate is connected with a precise guide rail, the position of the center line of the slide rail is invariable in each slippage, and two inclined plates are connected with the precise guide rail; and when the slide plate operates, the inclined plates are driven to operate (attention: the inclined plates are connected with a flat plate chuck), and the position of the symmetric center line is always invariable, so that the repeated workpiece clamping position is not changed, the center is high, the symmetry degree is good, the stability is high, and the precision is high.

Description

technical field [0001] The invention relates to a fixture for processing parts, in particular to a high-precision two-petal flat chuck device. Background technique [0002] At present, some precision parts on the market, such as auto parts, optical instruments, etc., require relatively high precision, so in the secondary processing, the workpiece needs to be positioned by the fixture, and then processed, and the existing fixture The clamping or positioning method is to use elastic chucks or vise jaws for clamping and positioning. Since the vise is a static and dynamic mode, its center of symmetry is uncertain. When the workpiece is repeatedly clamped, errors are prone to occur, and because of its The processing space is limited, and the workpiece can only be punched horizontally, but not longitudinally flattened, so the processing range is limited. Due to the poor symmetry in the secondary processing of precision parts, repeated clamping is prone to center position deviatio...

AI Technical Summary

Problems solved by technology

[0002] At present, some precision parts on the market, such as auto parts, optical instruments, etc., require relatively high precision, so in the secondary processing, the workpiece needs to be positioned by the fixture, and then processed, and the existing fixture The clamping or positioning method is to use elastic chucks or vise jaws for clamping and positioning. Since the vise is a static and dynamic mode, its center of symmetry is uncertain. When the workpiece is repeatedly clamped, errors are prone to occur, and because of its The processing space is limited, the workpiece can only be punched horizontally, but not longitudinally flattened, and the processing range is limited

Due to the poor symmetry in the secondary processing of precision parts, repeated clamping is prone to center position deviation, so it directly affects the processing accuracy of the workpiece, poor stability and low precision

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