为减小工件装夹变形，提高薄壁件加工精度，以薄壁零件装夹变形最小化为目标函数，通过遗传算法和有限元方法相结合，提出夹紧顺序、装夹布局和夹紧力同步分析方法。用该方法对一航空薄壁零件装夹进行优化分析，优化结果与经验设计及传统分析结果进行对比，有效地降低了工件因装夹不当引起的变形，验证了夹紧顺序、夹具布局和夹紧力同步优化方法的有效性。%In order to minimize the clamping deformation and improve the machining accuracy of thin-walled parts, a synchronous optimization method of clamping sequences, fixture layout and clamping forces was presented with the objective function of minimizing the deformation and through the combination of genetic algorithm and finite element method. An aviation thin-walled work piece was optimized by this method, and compared the optimization results with the experience empirical design and the traditional analysis results. This method can effectively reduce the work piece deformation due to improper clamping and improve the machining accuracy. The result proved the veracity of the synchronous optimization method of clamping sequences, fixture layout and clamping forces.
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