The cross short rollers guide way and servo feed - system are the most important parts of 3mz204cnc bearing internal grinding machine made by luoyany bearing research institute . - we have analysised firstly the factor of influence with roller guide way rigid , and we have obtained a load - distortion curve . we also have analysised the dominating factors influence with distinguish ratio of guide way , and we have obtained a solution about pre - tighted load which were tested by experiments 本文对洛阳轴承研究所研制的3mz204cnc全自动内圆磨床的核心部件：十字交叉滚子导轨和数控进给系统展开研究，首先对影响滚动导轨刚度的因素进行分析，得出载荷?变形曲线，对影响导轨分辨率的各因素进行分析，得出预紧力大小与分布对分辨率和起动力的影响，并通过实验验证。
