机械5

摘要 本设计快挡拨叉零件加工过程的基础设计的夹具设计。主要加工部位是平面和孔加工。在一般情况下，确保比保证精密加工孔很容易。因此，设计遵循的原则是先加工面后加工孔表面。在零件的夹具设计中，主要是根据零件加工工序要求，分析应限的自由度数，进而根据零件的表面特征选定定位元件，再分析所选定位元件能否限定应限自由度。确定了定位元件后还需要选择夹紧元件，最后就是确定专用夹具的结构形式。 关键词：快挡拨叉零件；工艺；夹具； Abstract The desig
n of tur
ntable parts machi
ni
ng process based desig
n of fixture desig
n. The mai
n processi
ng parts processi
ng pla
ne a
nd holes. I
n ge
neral, e
nsure easy to guara
ntee precisio
n machi
ni
ng holes tha
n. Therefore, the desig
n pri
nciple is first machi
ned surface after machi
ni
ng hole surface. I
n the fixture desig
n of parts, mai
nly accordi
ng to the requireme
nt of machi
ni
ng process, the
number of degrees of freedom a
nalysis should limit, the
n accordi
ng to the surface characteristics of compo
ne
nts selected locatio
n eleme
nt, the
n a
nalyze the selected locatio
n compo
ne
nts ca
n be qualified shall be limited degrees of freedom. Determi
ne the locatio
n eleme
nt also
need to select the clampi
ng eleme
nt, the last is to determi
ne the structure of the special fixture. Keywords: cutter tur
ntable parts; tech
nology; fixture; 目录 摘要I Abstract II 第1章零件的分析4 1.1零件的作用4 1.2零件的工艺分析4 1.3零件的生产类型5 第2章确定毛坯的种类和制造方法6 2.1选择毛坯6 2.2确定机械加工余量6 2.3设计毛坯尺寸6 第3章拟定工艺路线8 3.1基准的选择8 3.2零件表面加工方法选择8 3.3工艺路线的拟定9 第4章工序设计10 4.1选择加工设备与工艺装备10 4.2确定工序尺寸11 4.3切削用量及基本时间确定12 总结17 参考文献18 致谢19