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车削盲孔螺纹的常用方法是从外向里。当螺纹车刀进入盲孔底部的退刀槽,即时停车退刀,操作要求较高。如果从盲孔底部退刀槽开始向外车削,注意起始位置,操作就简便多了,且可节省加工的时间。当车刀切离螺纹时即可停车,转动刀架退刀,然后使车刀返回盲孔底部退刀槽的起始位置,作为车刀下个行程的起点位置,重新开动车床和进刀。如简图所示,这种方法不适用于加工左
The common method of turning a blind hole thread is from outside to inside. When the thread turning tool enters the undercut at the bottom of the blind hole, immediate stop and retraction will require higher operation. If starting from the bottom of the blind hole undercut grooper turning out, pay attention to the starting position, the operation is much easier, and can save the processing time. When the tool is cut off from the thread, it can stop and turn the tool holder to retract. Then, the tool returns to the starting position of the undercut groove at the bottom of the blind hole and restarts the lathe and the tool infeed as the start position of the next stroke of the tool. As the sketch shows, this method does not apply to machining left