This paper analyzed AC servo heavy cutting feed system component parts and their actions, and built model about mechanical transmission equipment section.

分析了强力切削交流伺服进给系统各组成环节及作用，对机械传动装置部分建立了模型。

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Servo feed system comprehensive pull-pressing rigidity is made up of the rigidity of servo drive system and the rigidity of mechanical transmission system, and each is affected by multiple factors.

伺服进给系统的综合拉压刚度由伺服驱动系统刚度和机械传动系统刚度组成，其各自又受多项因素的影响。

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Hence, the causes of its components' failures, including mechanical part, electric part and feed servo system, were analyzed and some solutions related put forward to deal with them.

对数控机床的机械部分、电气部分、进给伺服系统三个方面产生故障的原因、特点进行了分析和介绍，为采取相应的处理方法提供参考。

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