我们厂唯一的一台滚齿机是70年代中期进厂的。型号为Y38。由于我们的齿轮加工设备少,又常常是满负荷的运转,所以机床的精度相应的就降低了很多。特别是最近一批汽车齿圈的加工中,发现公法线长度变动量较大,而且也不稳定,这就引起了维修人员的注意,经过研究分析后决定对工作台进行检修。当拆开工作台部分后发现大蜗轮齿面受力的一侧(蜗杆与蜗轮接触的一侧)磨损很严重,估计在2.5mm左右,可是 The only hobbing machine in our factory was put into operation in the mid 70s. Model Y38. Because of our gear processing equipment is small, and often full operation, so the accuracy of the machine a corresponding reduction of a lot. Especially in the recent batch of automotive gear ring machining, found that the length of the public anomalous changes in the larger, but also unstable, which caused the attention of maintenance personnel, after research and analysis decided to overhaul the workbench. When disassembled the workbench part, it was found that the side of the big worm gear tooth surface (the side where the worm and the worm wheel contact) was worn seriously and was estimated to be about 2.5mm,