一、前言 高精度导轨加工是个难度较高的技术问题。长期以来,它一直是国内机床行业研究中的一项重要课题。影响导轨磨削精度的因素很多,除导轨磨床本身精度以外,还有外界气温变化、机床热变形、工件热变形等的影响。由于这些因素不容易控制,致使磨削后的导轨精度往往难以达到“ I. Introduction High-precision rail machining is a difficult technical problem. For a long time, it has been an important topic in the research of machine tool industry all the time. Affect the rail grinding precision many factors, in addition to the accuracy of the rail grinder itself, there are changes in the outside world temperature, machine tool thermal deformation, workpiece thermal deformation and so on. As these factors are not easy to control, resulting in the precision of the rail after grinding is often difficult to achieve "