机床的工作台、滑座等沿着导轨滑动时,会连续出现间断性的停止现象,称为工作台或滑座的爬行。爬行现象多数出现在大型机床上,如:落地镗床、大型导轨磨床、大型门座式起重机变幅螺杆以及大型滚齿机等设备。机床的爬行严重地影响工件表面加工质量和定位精度。爬行严重时,甚至使机床丧失加工能力。随着机床制造业的发展,国产重型机床在出厂时都能在低速大负荷下平稳地工作,不产生爬行。然而,在运行较长时间后(临近大修时),或者是原来运行平 Machine table, slide and other slide along the rail, there will be intermittent intermittent stop phenomenon, known as the workbench or slide crawl. Most crawling phenomenon appears in large machine tools, such as: floor boring machine, a large rail grinder, a large portal crane luffing screw and large hobbing machine and other equipment. Crawling machine tool surface seriously affect the quality and positioning accuracy. Serious crawling, even the loss of processing capacity of the machine. With the development of machine tool manufacturing, domestic heavy machine tools can work smoothly under low speed and heavy load at the factory without creeping. However, after a long period of operation (near the time of overhaul), or the original operation flat