【正文】 江西冶金職業(yè)技術(shù)學(xué)院 07 級自考畢業(yè)設(shè)計(jì) (論文 ) 1 軸類零件的加工工藝 摘 要 隨著科學(xué)技術(shù)飛速發(fā)展和經(jīng)濟(jì)競爭的日趨激烈，機(jī)械產(chǎn)品的更新速度越來越快，數(shù)控加工技術(shù)作為先進(jìn)生產(chǎn)力的代表，在機(jī)械及相關(guān)行業(yè)領(lǐng)域發(fā)揮著重要的作用，機(jī)械制造的競爭，其實(shí)質(zhì)是數(shù)控技術(shù)的競爭。本次設(shè)計(jì)就是進(jìn)行典型軸類零件的數(shù)控加工工藝與編程，側(cè)重于該零件的工藝分析、加工路線的確定及加工程序的編制。并繪制零件圖、加工路線圖。用 G 代碼編制該零件的數(shù)控加工程序，并附以編程尺寸的計(jì)算方法，其中零件工藝規(guī)程的分析是此次論文的重點(diǎn)和難點(diǎn)。 關(guān)鍵詞 ： 數(shù)控加工；工藝過程；加工工序；加工路線 To: with the rapid development of science and technology and economic petition bees more intense, mechanical product update speed faster and faster, CNC machining technology as a representative of advanced productive forces, in the machinery and related industry sector plays an important role, machinery manufacturing petitive, essentially CNC technology petition. This design is for typical shaft parts of CNC machining technology and programming, focuses on the part of the process of analysis, processing route and processing program. And draws a roadmap for parts, processing. G code index this part of NC program, and report to the programming of the calculation method, where the part process analysis is the focus of this paper and difficulty. Key words: NC machining。 process。 process。 processing route 江西冶金職業(yè)技術(shù)學(xué)院 07 級自考畢業(yè)設(shè)計(jì) (論文 ) 2 目 錄 第 1章 概述 ................................................................................................................... 3 典型軸類零件的加工工藝： ................................................................................ 3 軸類零件的功用 、結(jié)構(gòu)特點(diǎn) ..................................................................... 3 軸類零件一般加工要求及方法 .................................................................. 3 軸類零件加工的工藝路線 ........................................................................... 4 數(shù)控車床概述 ..................................................................................................... 5 ........................................................................................... 5 工作內(nèi)容 ................................................................................................. 5 本零件的加工所用機(jī)床型號、特點(diǎn)及數(shù)控系 ............................................. 5 鏜孔工藝： ........................................................................................................ 5 螺紋加工工藝 ..................................................................................................... 6 普通螺紋的尺寸分析 ................................................................................ 6 普通螺紋的編程加工 ................................................................................ 6 分析加工對象（零件圖樣） ................................................................................ 7 構(gòu)成零件輪廓的幾何條件 ......................................................................... 7 尺寸精度要求 .......................................................................................... 8 形狀和位置精度的要求 ............................................................................ 8 表面粗糙度要求 ....................................................................................... 8 材料與熱處理要求 ................................................................................... 8 第 2章 工藝過程卡 /加工工序卡 ..................................................................................... 8 數(shù)控加工工藝內(nèi)容的選擇 ................................................................................... 8 工藝過程 ............................................................................................................ 9 加工工序的劃分 ............................................................................................... 10 編制工藝過程卡 ................................................................................................11 切削用量的確定 ................................................................................................11 ap的確定 ..................................................................................11 進(jìn)給量 f（有些數(shù)控機(jī)床用進(jìn)給速度 Vf） .............................................. 12 主軸轉(zhuǎn)速的確定 ..................................................................................... 12 編制加工工序卡 ............................................................................................... 13 第 3章 加工路線圖 ...................................................................................................... 18 刀具加工進(jìn)給路線的確定： .............................................................................. 18 繪制刀具加工路線圖 (見附錄二 )....................................................................... 18 第 4章 數(shù)控刀具表 /數(shù)控編程基礎(chǔ) ........................................................................ 19 本零件加工所用刀具： .............................................................................. 19 編程基礎(chǔ) .......................................................................................................... 19 直徑編程和半徑編程 ...................................................