【正文】 on and CNC programming, reasonable process is to guarantee the quality of nc machining of nc machine, CNC machining condition from the Angle of the practical with nc machining based on the actual production of CNC machine tool, select, nc machining positioning and clamping and CNC machining technology based on basic knowledge, and on the basis of analyzing the numerical control turning processing technology. Along with the development of modern manufacture technology, CNC machine widely used in automotive, aerospace, mould etc machinery manufacturing field, many enterprises of CNC peration rate is 90%. CNC machine could play a role, the key lies in CNC programming. 0i FANUC system in the CNC lathe machining program piled ellipse on as an example, introduces the programming method in the analysis of elliptical parts procedures and methods. A macro instruction programming languages, as senior can use variable arithmetic logic operation and mixed operation for programming function. In the form of macros that provide circulation, generally judge branches and subroutine calling method. Can prepare all kinds of plicated parts processing procedure. Skilled application procedures, instructions macro downsizing programs can be greatly enhanced, still can machine processing ability to adapt. For example, elliptic to such a parabolic curve of standardized algorithm make internal macro programs, then can like circular interpolation as standard programming calls, according to the increased interpolation function. Key words: process。熟練應用宏程序指令進行編程 ,可大大精簡程序量 ,還可以增強機床的加工適應能力。在宏程序形式中 ,一般都提供循環(huán)判斷分支和子程序調用的方法。文章以在 FANUC 0i 系統(tǒng)數控車床上編制橢圓加工程序為例 ,介紹了采用 編程法在編制橢圓零件程序時的分析方法及思路。 隨著現代制造技術的發(fā)展 ,數控機床越來越廣泛地 應用于汽車、航空、模具等機械制造領域 ,許多企業(yè)數控機床的普及率高達 90%。 機械與電子工程系 2020 屆專科畢業(yè)生畢業(yè)設計 （橢圓完美組合 ） 作者姓名 指導教師 學科專業(yè) 數控 研究方向 數控車 所在班級 學習年限 二〇 一一 年 六 月 目 錄 1 摘 要 ................................................................................................................................... I Abstract................................................................................................................................. II 第一章 宏程序基本知識 .................................................................................................. 1 用戶宏程序簡介 .................................................................................................... 1 橢圓方程 ................................................................................................................ 2 控制指令 ................................................................................................................ 2 第 2 章 兩件套零件配合加工 .......................................................................................... 4 分析零件圖樣 ........................................................................................................ 4 毛坯的種類及其選擇 ............................................................