Y5120A插齿机常发现被加工齿轮的公法线长度变动量超差,经分析,是工作台让刀运动的复位精度超差引起的。经过调整定位调节螺母,可恢复正常。但使用一段时间后,往往又旧病复发,需要经常调整。该机床的让刀定位机构,在工作台让刀运动的频繁冲击下,不能持久地保持足够的定位精 Y5120A gear shaper often found that the normal length of the gear to be processed changes in the amount of tolerance over the poor, the analysis is the table so that the knife movement of the reset accuracy over tolerance caused. After adjusting the positioning adjustment nut can be restored to normal. However, after a period of use, often recurrence of old disease, need to be adjusted often. The machine to let the knife positioning mechanism, the table to let the knife movement of the frequent impact, can not be sustained to maintain adequate positioning precision