导向套到允许磨损前工作时间的确定在一定的工作条件下,导向套的磨损量只与工作时间有关。导向套的工作时间受孔轴线位置精度允许的磨损量的限制。允许的磨损量与一定的工作时间和总的加工长度(L,m)相适应,而通过加工一个孔的机动时间可将总的加工长度折算成加工好的工件数。由此可见,在进行与确定导向套达到允 Guide sleeve to allow to determine the working time before wear Under certain working conditions, the guide sleeve wear and tear only with the working hours. The working time of the guide sleeve is limited by the amount of wear that the hole axis position accuracy allows. The amount of wear allowed corresponds to a certain working time and the total length (L, m). The total machining length can be converted to the number of workpieces machined by machining one hole. Thus, in the conduct and determination of the guide sleeve to reach the allowance