机械5

摘要 本次设计主要研究了轴类零件的造型以及对其模型的设计与数控加工。零件加工中涉及了数控车床加工、编程、CAD制图等，在对所加工零件进行工艺分析额基础上，拟定了加工方案。选择了合适的刀具、量具，确定了切削用量。对加工中存在的一些工艺问题（对刀点、加工路线也做了必要的处理），加工出了合格的产品。通过整个加工的过程的制定，充分体现了数控加工技术在保证加工精度、加工效率，简化工序等方面的优势。它主要用来研究机械数控加工的、以及各种机械加工中要注意的问题。 关键词：数控车床；数控编程；数控加工工艺 Abstract This graduatio
n desig
n is mai
nlystudied the model of shaft parts a
nd the model desig
n a
nd
nc machi
ni
ng.Parts processi
ng i
nvolved i
n the
numerical co
ntrol lathe processi
ng,programmi
ng,CAD drawi
ng,etc.,o
n the based o
n process a
nalysis of parts processi
ng,processi
ng scheme isworked out.Choose the suitable cutti
ng tools,measuri
ng tool,the cutti
ng parameter is determi
ned.For processi
ng a
nd some tech
nologyproblems i
n(to the cutti
ng poi
nt,processi
ng route a
nd do the
necessaryprocessi
ng),work out the qualified goods.Through thewhole machi
ni
ng process,fullyembodies the
nc machi
ni
ng tech
nologyi
n guara
ntee the machi
ni
ng precisio
n a
nd machi
ni
ng efficie
ncy,simplifythe procedure of adva
ntage.It is mai
nlyused to studythe mecha
nical
nc machi
ni
ng,a
nd atte
ntio
n should be paid to the problems i
n all ki
nds of mecha
nical processi
ng. Keywords:CNC lathe,NC programmi
ng,The NC machi
ni
ng process 目录 摘要1 Abstract 2 1零件介绍5 2加工工艺方案分析6 2.1定位基准的选择6 2.2加工走刀路线的拟定7 2.2.1零件表面数控车削加工方案的确定7 2.2.2加工阶段的划分8 2.2.3工序的划分9 2.2.4加工顺序的安排11 2.3数控加工工序设计15 2.3.1机床的选择15 2.3.2工件定位与夹紧方案的确定和夹具的选择17 2.3.3确定加工方案18 3加工程序的编制19 4.加工准备20 4.1毛坯的确定20 4.2加工设备的选择20 4.3夹具的确定22 4.4刀具的选择23 4.5选择切削用量24 4.5.1背吃刀量的确定24 4.5.2主轴转速的确定24 4.6量具的选择25 5数控加工工艺卡片的拟定27 6.零件的加工28 6.1工件安装28 6.2刀具装夹28 6.3回机床原点29 6.4对刀30 6.5建立工作坐标系31 6.7自动运行32 致谢34 参考文献36 附录A程序单37