摘要
數(shù)控車床是目前使用最廣泛的數(shù)控機(jī)床之一。隨著數(shù)控技術(shù)的不斷發(fā)展和應(yīng)用領(lǐng)域的擴(kuò)大，數(shù)控加工技術(shù)對國計民生的一些重要行業(yè)（IT、汽車、輕工、醫(yī)療等）的發(fā)展起著越來越重要的作用，因為效率、質(zhì)量是先進(jìn)制造技術(shù)的主體。高速、高精加工技術(shù)可極大地提高效率，提高產(chǎn)品的質(zhì)量和檔次，縮短生產(chǎn)周期和提高市場競爭能力。數(shù)控車床主要用于加工軸類、盤類等回轉(zhuǎn)體零件。通過數(shù)控加工程序的運(yùn)行，可自動完成內(nèi)外圓柱面、圓錐面、成形表面、螺紋和端面等工序的切削加工，并能進(jìn)行車槽、鉆孔、擴(kuò)孔、鉸孔等工作,并且具有很高的精度。而對于數(shù)控加工,無論是手工編程還是自動編程，在編程前都要對所加工的零件進(jìn)行工藝分析，擬定加工方案，選擇合適的刀具，確定切削用量，對一些工藝問題(如對刀點、加工路線等)也需做一些處理。并在加工過程掌握控制精度的方法,才能加工出合格的產(chǎn)品。
本文根據(jù)數(shù)控機(jī)床的特點，針對具體的零件，進(jìn)行了工藝方案的分析，工裝方案的確定，刀具和切削用量的選擇，確定加工順序和加工路線，數(shù)控加工程序編制。通過整個工藝的過程的制定，充分體現(xiàn)了數(shù)控設(shè)備在保證加工精度，加工效率，簡化工序等方面的優(yōu)勢。

關(guān)鍵詞：數(shù)控車床；加工工藝；編程
Abstract
CNC lathe is the most widely used one of CNC machine tools. With the continuous development of numerical control technology and applications of the expansion, CNC machining technology to the national economy and some important industries (IT, automobile, light industry, medical, etc.) play an increasingly important role in the development, because the efficiency, quality, advanced The main manufacturing technology. High-speed, high-finishing technology can greatly improve efficiency, improve product quality and grade, shorten the production cycle and improve market competitiveness. CNC lathe is mainly used for machining shafts, classes and other rotary parts. Running through the NC program,
Can automatically complete internal and external cylindrical surface, conical surface, forming surface, thread and end the processes of cutting, and can be tank cars, drilling, reaming, reaming, etc., and has very high precision. For CNC machining, programming, whether by hand or automatic programming, the programming before going right in the processing of parts for Gongyi analysis, Nidingjiagong program, choose the right of the tool, determine the cutting Yong Liang, Yi Xie process on the issue (Ru on knife point, processing line, etc.) also need to do some processing. Process in control in the precision of the method can process a qualified product.
This according to the characteristics of CNC machine tools, for specific parts of process and program analysis, program to determine tooling, cutting tools and cutting parameters selection, determine the processing sequence and processing line, NC programming. Through the process of making the whole process fully reflects the processing of numerical control equipment in ensuring accuracy, processing efficiency, simplify procedures, and other areas.
Keyword: a CNC MACHINING CNC；automatic；accuary

目錄
前言 6
第1章 工藝方案分析 7
1.1零件圖 7
1.2 加工分析 7
1.3加工工藝方案 8
1.4重點工序操作要點分析 8
1.44工序8操作要點 9
第2章工件的裝夾 10
2.1定位基準(zhǔn)的選擇 10
2.2定位基準(zhǔn)選擇的原則 10
2.3確定零件的定位基準(zhǔn) 10
2.4裝夾方式的選擇 10
2.5數(shù)控車床常用的裝夾方式 10
第3章 刀具及切削用量 12
3.1選擇數(shù)控刀具的原則 12
3.2選擇數(shù)控車削用刀具 12
3.3設(shè)置刀點和換刀點 13
3.4確定切削用量 14
第4章典型軸類的加工 15
4.1軸類零件加工工藝分析 15
4.2典型軸類零件加工工藝 17
第5章 主要加工工藝卡片 19
第6章 工件加工程序 27
六、小結(jié) 40
第7章 致謝 41
八、參考文獻(xiàn) 42