半液压卸荷复合导轨技术在大型数控滚齿机中的应用

Application of Semi-hydraulic Unloading and Composite Guide Technology in Large CNC Hobbing Machine

针对大型数控滚齿机床在使用中出现的低速爬行问题,提出了半液压卸荷复合导轨技术,阐述了立柱液压卸荷结构的工作原理,分析了数控滚齿机立柱(X轴)水平移动定位影响因素。结果表明:该机构可减小机床立柱移动时动静摩擦因数的差异,为解决大型机床的低速爬行问题提供了一种有效途径。

Aimed at the problem that large CNC hobbing machine encounter creeping at low speed,a semi-hydraulic unloading and composite guide technology was put forward. The working principle of the column hydraulic unloading introduced,and the mobile location factors of CNC hobbing machine( X axis) was analyzed. The result shows that the mechanism can reduce the difference between static and dynamic friction when machine tool column moves,which provides an effective method to solve the problem of low velocity crawling in large machine tool.