自行车变速轴零件的冷挤压

自行车变速轴零件的冷挤压是我国早期应用无屑加工技术制造高难度复杂零件的典型范例之一,此文作者针对4种内齿、内棘齿零件冷挤压成形的研制过程,着重介绍了其中一种零件的挤压工艺分析、实际生产工序和所用模具的特点,对长期处于保密状态的技术予以适当解密。

Cold Extrusion for Parts of Three Speed Hub in Bicycle

The cold extrusion for parts of three speed hub in bicycle is one of early typical examples that hard - machining and complicated parts are worked by using chipless wotking technology in our country. In this paper,the writer reviews the study process of cold extrusion forming for four parts possessed inner -gear and inner ?ratchet form, and emphatically introduces the extrusion forming analysis ,the practical working process, and the die's characteristic of one of these parts. This is that the technology kept secret over a long period of time is appropriately brought into the open.