分析了铸件加工前后工件内部的应力分布状态及内应力对工件变形的影响。根据具体的加工实例，提出了消除工件内应力影响的措施，避免加工后的工件产生变形而影响加工精度。%The distribution of internal stress of castings before and after machining and their effects on piece distortion were analyzed. Based on specific examples of processing, the measures that eliminate internal stress were presented to avoid machining distortion and get high machining accuracy.
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