机械5

基于MasterCAM铣零件的虚拟仿真与加工 【摘要】 随着科技的不断发展，数控技术在企业中发挥越来越重要的作用。本设计通过对数控加工的工艺特点、加工零件工艺性等进行分析，选择正确的加工方法，设计合理的加工工艺过程，充分发挥数控加工的优质、高效、低成本的特点。设计说明书以数控车床车削轴类零件为例，根据被加工工件的材料、轮廓形状、加工精度等选用合适的机床，制定加工方案，确定零件的加工顺序，各工序所用刀具，夹具和切削用量等，编写加工零件的程序。按照说明书要求将加工出零件，并对零件自检数据进行分析，说明在加工过程中应注意的事项。 本文主要讲述铣零件零件的加工工艺，通过Master CAM X5画出三维图，对零件图的工艺性分析、加工刀具的选择。然后用?50mm的面铣刀进行铣面，用?10立铣刀进行挖槽加工凸台轮廓、挖槽加工，最后用?11.8及?12铰刀进行圆孔加工，最后导出程序。 关键词：工艺分析、三维造型、工艺流程、自动编程 Abstract: With the co
nti
nuous developme
nt of scie
nce a
nd tech
nology,
numerical co
ntrol tech
nology i
n the e
nterprise play a more a
nd more importa
nt role. This desig
n through the a
nalysis of process characteristics, the NC machi
ni
ng process, choose the correct processi
ng methods, desig
n the reaso
nable process, give full play to the characteristics of NC machi
ni
ng of high quality, high efficie
ncy a
nd low cost. The desig
n specificatio
n of CNC lathe tur
ni
ng shaft parts as a
n example, accordi
ng to the material, the shape of theworkpiece co
ntour machi
ni
ng, the machi
ni
ng precisio
n of the machi
ne tool suitable for processi
ng scheme, a
nd determi
ne the parts processi
ng order, the tools used i
n the process, fixture a
nd cutti
ng machi
ni
ng parts,writte
n procedures. Accordi
ng to the requireme
nts of the specificatio
nwill be processed out parts, a
nd parts of the self i
nspectio
n data a
nalysis,
note i
n the processi
ng process should pay atte
ntio
n to the matters. I
n this paper, the processi
ng tech
nology of milli
ng parts is described. Three-dime
nsio
nal map is draw
n by Master CAM X5. The
n, the surface milli
ng surface is processedwith a
n ?50mm milli
ng cutter,with a 10-sta
nd milli
ng cutter for gropi
ng processi
ng co
nvex table co
ntour, gropi
ng processi
ng, a
nd fi
nallywith 11.8 a
nd 12 reamers for circular hole processi
ng, a
nd the procedure is fi
nally derived。 Keywords: Process a
nalysis, process flow, three-dime
nsio
nal modeli
ng, automatic programmi
ng 目录 1绪论1 1.1本设计的目的及内容1 1.2课题背景知识1 2零件工艺分析2 2.1零件图的分析2 2.2结构工艺性分析3 2.3加工方法的选择3 2.4工序的划分3 2.4.1工序的划分原则3 2.4.2工序的划分方法4 2.4.3工序的确定4 2.5机床的选择5 2.6装夹方案的选择6 2.7刀具的选择7 2.8切削用量的选择8 2.9填写机械加工工艺规程11 3零件造型与设计编程原点的确定12 3.1铣零件的二维绘制12 3.2铣零件的实体造型14 3.3原点的选择16 3.3.1手工编程16 3.3.2自动编程16 3.3.3编程原点的确定16 4软件编程操作18 4.1选择机床18 4.2刀路的设计19 4.2.1铣削下平面刀路设计19 4.2.2外形铣削的刀路设计21 4.2.3挖槽的刀路设计23 4.3零件仿真加工28 4.4后处理30 总结31 致谢32 参考文献33