双臂自适应夹具加工变形控制方法

doi:10.7527/S1000-6893.2015.0198

Abstract

Abstract:

Blade is easily affected by clamping, cutting force and residual stress which result in warp and torsion due to thin-walled and free surface of blade. In this paper, a new method for the control of machining distortion that eliminates surface errors by using an adaptive dual-arm fixture is presented. Firstly, the sources of distortion in different machining methods are discussed. Secondly, after the detailed analysis of unstressed fixing and stress releasing, the engineering design and mechanism analysis of the adaptive mechanism are shown. Finally, a control process of machining distortion is obtained based on the adaptive dual-arm fixture. Machining distortion can be eliminated without multiple repairing datum and changing machine. The experimental results show that the adaptive dual-arm fixture can effectively eliminate surface errors by 50% in machining, and the precision of test blade machined in this way is improved obviously.

Key words: distortion control, blade, adaptive fixture, free surface, machining distortion

CLC Number:

V263.1
TP391

YU Jianhua, CHEN Zhitong. A control method of machining distortion using adaptive fixture with dual-arm[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2016, 37(5): 1657-1665.

References

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A control method of machining distortion using adaptive fixture with dual-arm

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