我厂生产的排气风扇转轴系无台阶、两端无中心孔和铁心档要求滚花的结构,见图1。其制造方法为:采用φ8.2冷拔45号圆钢下料(包括切槽、倒角)、热处理、无心磨削、套丝、铣 A 向扁平、滚花、压转子铁心、校直、车转子外圆、检验并校直等十道工序。对零部件进行验测,一次性合格率达 The exhaust fan shaft of our factory is without steps, the structure of knurling without central hole and core file at both ends is shown in Fig.1. The manufacturing method comprises the following steps of: using φ8.2 cold drawing 45 round steel cutting (including grooving and chamfering), heat treatment, centerless grinding, threading, milling A to flat, knurling, pressing rotor core, straightening, Car rotor outer circle, inspection and straightening ten processes. Parts of the test, a one-time pass rate