IS 7301-1974

标准号：IS 7301-1974
发布日期：1974/9/1 12:00:00
实施日期：1999/12/31 12:00:00
适用范围：Specifies the requirements for grinding mandrels used for holding workpieces having bore diameters within tolerance zone H7 and having bore lengths not greater than those indicated in Appendix A. For this purpose the mandrels are required in pairs, the taper dimensions being so chosen that mandrel No. 1 takes the smaller bores within tolerance zone H7 whilst mandrel No. 2 takes the larger bores within this zone. These mandrels can be repeatedly assembled to the workpiece with coincidence maintained between the mandrel axis and the workpiece axis.