行星轮架作为重要的零件被广泛地应用于驱动桥和行星式变速器上。在我厂，行星轮架在车床加工后，制定了钻、扩、惶、铰四道工序，采用专用工装定位装夹，在普通钻床上钻、扩加工，在立式铣床上镗、铰加工；生产效率低，占用机床多，成本较高。由于多次装夹定位以及专用工装的 Planetary carriers are widely used on transaxle and planetary transmissions as important parts. In our factory, the planet wheel carrier has developed four procedures of drilling, expanding, panicking and reaming after lathe machining, adopting special tooling fixture, drilling on general drilling machine, expanding work, boring and reaming in vertical milling machine ; Low production efficiency, take up more machine tools, higher cost. Due to multiple fixture positioning and special tooling