随着加工制造业的发展,重型机床及大型模具的使用越来越广泛,为了便于操作,降低工作强度,通常要求机床的下工作台可移动到机床的外面,便于更换模具及放取工件。在这当中不可避免地会出现工作台在移动过程中两边不同步,重复定 With the development of manufacturing industry, heavy machine tools and large molds are used more and more widely. In order to facilitate operation and reduce working intensity, it is usually required that the lower worktable of the machine be moved to the outside of the machine tool so as to facilitate the replacement of molds and the extraction of workpieces. Inevitably, there will be occasions during which the workbench will not synchronize on both sides during the move,