一、问题的提出 按本企业的产品发展规划,精密重型数控机床新产品将逐步取代传统的普通机床产品。数控机床要求它的移动部件(刀架、铣头等)定位精度高,并采用有予加负荷的滚动锒钢导轨结构。为此,厂部提出了增设大型龙门式周边导轨磨床的规划。实现该规划的方案有:一是订购,二是在自制大型龙门鉋床的结构基础上进行改造。 First, the problem raised According to the company’s product development plan, precision heavy-duty CNC machine tool new products will gradually replace the traditional ordinary machine tool products. CNC machine tools require its moving parts (tool holders, milling heads, etc.) to have high positioning accuracy, and use a rolling 锒 steel rail structure with a preload. To this end, the factory department proposed a plan for the addition of a large-scale gantry-type peripheral guide grinding machine. The plans for realizing this plan are: First, ordering, and secondly, reforming the structure of the self-made large-sized planer.