Clamp system used for processing high-precision eccentric shaft of numerical-control lathe

Abstract

The invention discloses a clamp system used for processing a high-precision eccentric shaft of a numerical-control lathe. The clamp system comprises an eccentric shaft, a three-claw chuck, a base body, a regulating body and a positioning insertion pin, wherein the eccentric shaft is provided with an axis A and an axis B; the base body is clamped and fixedly mounted on three clamping claws of the three-claw chuck; at least three positioning holes A are formed in the base body; left and right sides of the base body are symmetrically equipped with positioning pin holes A; a positive-deviation positioning pin hole assembly A and/or a negative-deviation positioning pin hole assembly A is arranged on the base body; the center position of the regulating body is equipped with a shaft hole which corresponds to a bolt through hole; at least three positioning holes B are formed in the regulating body; the left and right sides of the regulating body are symmetrically provided with positioning pinholes B; a positive-deviation positioning pin hole assembly B and/or a negative-deviation positioning pin hole assembly B is arranged on the regulating body; the regulating body is connected and fixedwith the base body through a fastening screw; and the axis A of the eccentric shaft is assembled in the shaft hole of the regulating body. The clamp system is high in eccentric shaft processing precision which can be 0.01mm, is stable in dimension, and is easy in regulation.

Description

technical field [0001] The invention relates to the technical field of precision machining of eccentric shaft parts, in particular to a fixture system for machining high-precision eccentric shafts on a numerical control lathe. Background technique [0002] Eccentric shaft parts are widely used in the automotive field. The processing of eccentric shafts is done in large quantities by professional equipment. The investment in equipment is large, and the precision of the processing is not high, which cannot meet the current high requirements for eccentric shaft parts processing such as aviation and aerospace. . Eccentric shaft processing has always troubled the field of mechanical processing. The traditional processing method is to use four claws to clamp parts on lathes or CNC lathes for manual eccentricity, or to do eccentric tooling for eccentricity. [0003] Defects of eccentric shaft machining on traditional lathes: the jaws cannot be positioned stably, and the positionin...

AI Technical Summary

Problems solved by technology

[0003] Defects of traditional lathe processing eccentric shaft: the jaws cannot be stably positioned, and the positioning is inaccurate during repeated clamping, resulting in low machining accuracy, low efficiency, and unstable dimensions; and when the dimensions are not good, precise size fine-tuning cannot be performed

Defects of traditional eccentric tooling: preliminary positioning can be performed (positioning accuracy is about 0.1mm), and size fine-tuning cannot be performed when the size is not good

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