摘

数控机床加工程序的编制比普通机床工艺规程编制复杂。这是因为在普通机床的加工工艺中不必考虑的问题，如工序内工步的安排、对刀点、换刀点及走刀路线的确定等问题，在数控铣削加工时，这一切都无例外地都变成了固定的程序内容，正由于这个特点，促使对加工程序的正确性和合理性要求极高，工艺设计不能有丝毫的差错，否则加工不出合格的零件。 
本文主要讲述数控车削和铣削加工工艺及编程，通过对零件图纸的分析，确定该零件的加工工艺、刀具、切削用量，制定出该零件的机械加工工艺过程卡片及数控加工工序卡，然后利用SOLIDWORKS软件绘制出该零件的三维实体图，并运用SOLIDWORKS软件对零件进行自动编程，最终将程序录入机床，完成该零件的加工。
关键词：数控铣削；工艺设计；加工工艺；切削用量；数控编程

Abstract

Numerical control machine tool processing program than normal machine procedure establishment of complex.This is because the ordinary machine tools don't have to consider the problems in the machining process, such as step process within the work arrangements, the cutting point, changing and the determination of feed line problems such as the cutting point, in the numerical control milling, all without exception is turned into a fixed program content, is due to this characteristic, prompting high requirements for the correctness and rationality of the process, process design of there can be no mistake, otherwise processing is the key to the qualified parts.
This article mainly tells about the numerical control turning and milling process and programming, through the analysis of the drawings, we determine the parts of the processing technology, cutting tool, cutting dosage, work out the parts of nc machining process for machining process card and card, then using UG software to map the components of the three-dimensional entity graph, and by use of UG software to automatic programming, parts will eventually program into machine tool, finish machining of the parts.
Key words: CNC milling,Process design;The processing technology;Cutting parameter;CNC programming