Bidirectional self-centering power chuck

Abstract

The invention relates to a bidirectional self-centering power chuck, which comprises a chuck body, an inner clamping claw base, an inner clamping claw, an inner clamping claw pin, an outer clamping claw base, an outer clamping claw, an outer slide block, outer connecting rods, an inner slide block, inner connecting rods, an inner rotating tower, an outer rotating tower, an outer oil cylinder and an inner oil cylinder. According to the power chuck, the straight line motions of inner and outer oil cylinder rods are converted into opposite circular motions of the inner and the outer rotating towers respectively; and through n groups of inner and outer connecting rods, the inner and the outer slide blocks and the inner and the outer clamping claws, the inner and the outer rotating towers drive the inner and the outer clamping claws in match to be in opposite self-centering clamping motion, and thereby a workpiece is pushed and pulled to the center of a circle to be clamped bidirectionally at one same clamping point. Compared with the prior art, the invention has the advantages that the power chuck is high in machining precision, wide in application range and multiple in function.

Description

technical field [0001] The invention relates to a chuck for fixing workpieces, in particular to a bidirectional self-centering power chuck. Background technique [0002] At present, the jaws of self-centering manual chucks or self-centering power chucks used on various machine tools can only move in one direction at the same time, that is, only the clamping movement of the jaws to the center of the circle or the movement of the jaws away from the center of the circle However, some thin-walled workpieces are easily deformed whether they are clamped alone or braced alone, which affects the machining accuracy of the workpiece. Contents of the invention [0003] The purpose of the present invention is to provide a two-way self-centering power chuck for the above-mentioned shortcomings in the prior art. At the same part of the workpiece, there are not only claws to push the workpiece toward the center of the circle, but also claws to pull the workpiece away from the center of t...

AI Technical Summary

Problems solved by technology

[0002] At present, the jaws of self-centering manual chucks or self-centering power chucks used on various machine tools can only move in one direction at the same time, that is, It is only the clamping movement of the jaws to the center of the circle or the stretching movement of the jaws away from the center of the circle, and some thin-walled workpieces are easily deformed whether they are clamped alone or stretched alone, which affects the machining accuracy of the workpiece

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