Y7131齿轮磨床(与进口5831及ZSWZ315齿轮磨床规格相同)分度蜗轮副是该机床的关键部件,其精度直接影响磨削齿轮的周节累积误差。由于机床长期使用,蜗轮副的分度精度逐渐丧失。过去常采用剃齿、珩磨和手工刮研等方法修复。剃齿时将专用剃齿刀装在滚齿机刀 Y7131 Gear Grinder (same specifications as imported 5831 and ZSWZ315 Gear Grinder) The indexing worm gear is a key component of this machine tool. Its accuracy directly affects the cumulative error of the grinding gear in the periphery. Due to the long-term use of the machine, gradual division of worm gear gradually lost. In the past often use shaving, honing and hand scraping and other methods of repair. When shaving a special gear shaving cutter installed in hobbing machine knife