机械5

QA048偏心轴加工工艺设计与编程仿真 摘要 数控机床加工工艺与普通机床加工工艺在原则上基本相同，但数控加工的整个过程是自动进行的。数控加工的工序内容比普通机床的加工的工序内容复杂。这是因为数控机床价格昂贵，若只加工简单的工序，在经济上不合算，所以在数控机床上通常安排较复杂的工序，甚至是在通用机床上难以完成的那些工序。数控机床加工程序的编制比普通机床工艺规程编制复杂。这是因为在普通机床的加工工艺中不必考虑的问题。 本次设计主要是对数控加工工艺进行分析与具体零件图的仿真加工，首先对数控加工技术进行了简单的介绍，然后根据零件图进行数控加工分析。第一，根据本零件材料的加工工序、切削用量以及其他相关因素选用刀具和零件的轮廓特点确定加工设备。第二，针对零件图图形进行工艺设计。此零件为偏心轴零件，外轮廓由直线、偏心轴、槽、内孔、扁方等组成。 关键词:数控加工；工艺规程；仿真加工；偏心轴 Abstract The machi
ni
ng process of NC machi
ne tool is basically the same as that of commo
n machi
ne tool i
n pri
nciple, but thewhole process of NC machi
ne tool is automatic. The process co
nte
nt of NC machi
ni
ng is more complicated tha
n that of ordi
nary machi
ne tools. This is because CNC machi
ne tools are expe
nsive, if o
nly processi
ng simple procedures, eco
nomic i
nco
ngruous, so that the CNC machi
ne tools are usually arra
nged o
n the more complex procedures, eve
n i
n the commo
n machi
ne tools difficult to complete those procedures. The programmi
ng of NC machi
ne tool is more complicated tha
n that of commo
n machi
ne tool. This is because the commo
n machi
ne tool processi
ng process does
not have to co
nsider the problem. This desig
n is mai
nly to the
numerical co
ntrol machi
ni
ng process a
nalysis a
nd the specific parts of the simulatio
n processi
ng, first of all, the
numerical co
ntrol machi
ni
ng tech
nology is simply i
ntroduced, a
nd the
n accordi
ng to the parts machi
ni
ng a
nalysis. First, accordi
ng to the processi
ng process, cutti
ng amou
nt a
nd other related factors, the outli
ne characteristics of the tool a
nd part are chose
n to determi
ne the processi
ng equipme
nt. Keywords: NC machi
ni
ng; Process procedures; Simulatio
n processi
ng; Ecce
ntric axis 目录 摘要2 Abstract 3 前言1 第一章概述2 1.1国内外数控发展概况2 1.2数控技术发展趋势2 1.2.1性能发展方向2 1.2.2功能发展方向3 1.2.3体系结构的发展4 1.3智能化新一代PCNC数控系统5 第二章零件图分析6 2.1零件图6 2.2工艺设计及零件图分析6 2.2.1工艺设计6 2.2.2零件图分析7 2.2.3加工材料分析7 第三章零件工艺分析8 3.1定位基准选择的原则8 3.2定位基准的选择8 3.3装夹方式的选择8 3.4数控车床常用装夹方式8 3.5确定加工方法9 3.6零件加工工序分析9 3.7确定加工方案10 3.8数控加工工艺卡片11 四刀具及切削用量12 4.1选择数控刀具的原则12 4.2选择数控车削刀具12 4.4选择数控铣削刀具13 4.5确定切削用量13 五零件编程与仿真加工15 5.1设置对刀点和换刀点15 5.2程序的编制16 5.2.1数车的程序编制16 5.3.2数铣的程序编制20 总结28 致谢29 参考文献30