机械5

典型零件的数控铣削编程与加工 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。 本文主要介绍了典型零件的数控铣削编程加工工艺及其编程，开篇首先介绍了数控技术的概述，紧接着对零件图进行了简要的分析，然后确定零件的毛坯、定位基准、装夹方式、刀具、量具、切削用量等等，再制定出合理的加工方案，并制定相关的工艺文件，最后编制出零件的加工程序。 关键词：加工工艺；装夹方式；切削用量；程序。 Abstract ?CNC machi
ne tool processi
ng tech
nology a
nd commo
n machi
ne tool processi
ng tech
nology i
n pri
nciple, basic same, but thewhole process of
nc machi
ni
ng is automatic. The
nc machi
ni
ng process co
nte
nt tha
n ordi
nary machi
ne tool machi
ni
ng process of complicated. If this is because the
nc machi
ne tools is expe
nsive, o
nly simple processi
ng process, u
neco
nomical i
n terms of eco
nomy, so usually arra
nge more complex process o
n
nc machi
ne tools, or eve
n o
n the u
niversal machi
ne tool is difficult to fi
nish the process. This article mai
nly i
ntroduced the
numerical co
ntrol milli
ng programmi
ng process of typical parts a
nd programmi
ng, begi
nswith the first i
ntroduced the overview of
numerical co
ntrol tech
nology, followed by a brief a
nalysiswas carried out o
n the part drawi
ng, a
nd the
n determi
ne the bla
nk, the locati
ng datum for the parts, the clampi
ngway, cutti
ng tools, measuri
ng tool, cutti
ng dosage, etc., to develop reaso
nable processi
ng scheme, a
nd formulate the releva
nt process docume
nts, fi
nally develop the parts processi
ng program. Keywords: process; The clampi
ngway; Cutti
ng parameter; The program. 目录 摘要I Abstract II 第1章绪论1 1.1数控机床的产生和发展1 1.2数控加工的特点1 1.3本课题的主要内容及任务1 第2章零件的图样分析3 2.1零件的结构特点分析3 第3章零件的工艺规程设计4 3.1毛坯的选择4 3.2定位基准的选择4 3.3装夹方式的选择5 3.4表面加工方法的选择5 3.5加工顺序的安排5 3.6工艺路线的确定6 第4章设备及其工艺装备的确定7 4.1机床的选择7 4.2刀具的选择7 第5章切削用量的选取8 第6章工艺卡片11 6.1工艺过程卡11 6.2数控加工工序卡11 第7章数控加工程序的编制12 7.1编程方法的选择12 7.2编程坐标系的确定12 7.3自动编程参数的设置13 7.4部分NC程序的输出18 设计总结20 致谢21 参考文献22