Self-centering clamping mechanism for cable-stayed columns

Abstract

The invention provides a self-centering clamping mechanism for cable-stayed columns. The self-centering clamping mechanism comprises a disk body and clamping claws; a plurality of inclined grooves which are in central symmetry are arranged inside the disk body; a long bushing is respectively mounted in the inclined grooves; the inclined grooves lead to the bottom of the disk body; a staying disk is arranged at the center of the bottom of the disk body; the upper end of the staying disk is in sliding fit with the disk body through a big bushing; the periphery of the staying disk is provided with two circles of clamping teeth which are used for clamping clamp grooves at the lower ends of three cable-stayed rods; the cable-stayed rods are arranged in the long bushings in a penetrating manner; the upper ends of the cable-stayed rods fix the clamping claws; the outer sides of the clamping claws are in sliding connection with clamp grooves in positioning bases; the positioning bases are fixed at the outer edge of the disk body; a tension rod is fixed at a lower part of the staying disk; the upper end of the tension rod penetrates into the staying disk; the lower end of the disk body is fixed on a turning machine through a connecting disk; and a positioning shaft is in close fit with the connecting disk and assembling holes of the turning machine. The self-centering clamping mechanism for the cable-stayed columns has the advantages that: angular positioning bases for the clamping claws are adopted, and the distance from each of the positioning bases to an inclined sliding column is basically equal to that from the head of each clamping claw to the center of the inclined sliding column, so that a sliding gap cannot be amplified, and the accuracy for repeatedly positioning can reach 0.015 mm.

Description

technical field [0001] The invention relates to a self-centering clamping mechanism of a cable-stayed column, which belongs to the technical field of mechanical manufacturing. Background technique [0002] In mechanical processing, inner hole parts with high requirements for processing concentricity are often encountered. The commonly used clamping method is three-jaw self-centering clamping. However, after the clamping of the general-purpose three-jaw chuck, the repeated positioning accuracy of the inner hole of the workpiece and the jaws is not high, usually around 0.05mm. Even with the three-jaw cable-stayed column chuck, the repeated positioning accuracy can only reach 0.03mm. It cannot meet the high-precision processing requirements of batch parts. Contents of the invention [0003] The purpose of the present invention is to solve the defects of the above two structures, and provide a self-centering clamping mechanism for cable-stayed columns, which is suitable for ...

AI Technical Summary

Problems solved by technology

However, after the clamping of the general-purpose three-jaw chuck, the repeated positioning accuracy of the inner hole of the workpiece and the jaws is not high, usually around 0.05mm. Even with the three-jaw cable-stayed column chuck, the repeated positioning accuracy can only reach 0.03mm. Unable to meet the high-precision processing requirements of batch parts

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