以nsr - 40型罗茨鼓风机的三叶扭叶叶轮为例，详细阐述了这种叶轮型面在车削加工中心的加工方法、工艺和数控编程。
Taking NSR_40 Roots blower as an example, the processing ways, technics and NC program of this twist tri_lobe profile on the lathe machining center is set forth in detail.
如何设置刀具长度补偿参数一直是数控铣床和加工中心编程和操作中的难点。
How to set the tool length compensation parameters is the difficulty in operating NC milling machine or machining center.
本次设计的题为数控加工中心刀具库控制，刀盘由PLC(可编程序控制器)控制来实现其功能。
The design of CNC Machining Center Tool Library, entitled control, knife set by the PLC (programmable logic controller) control to achieve its functions.
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