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车削外圆中如何选择切削用量
更新时间: 2020-10-03 00:00:00  

切削用量的选择原则:

1、粗车时,应尽量保证较高的金属切除效率和必要的刀具耐用度;

2、精车时,对加工精度和表面粗糙度要求较高,加工余量不大且较均匀,选择精车的切削用量时,应着重考虑如何保证加工质量,并在此基础上尽量提高生产率;

3、选择切削用量时,应首先选取尽可能大的背吃刀量,其次根据机床动力和刚性的限制条件,选取尽可能大的进给量,最后根据刀具耐用度要求,确定合适的切削速度,增大背吃刀量可使走刀次数减少,增大进给量有利于断屑。

关键词: 如何 选择 切削 用量

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