摘要 本次设计的题目是轴阶套加工工艺规程制定及钻φ4孔专用夹具设计，在掌握零件作用的基础上，对零件的工艺进行分析。针对设计给定的题目，设计中主要对机床夹具进行设计。本夹具体是以保证加工精度，生产效率和便于工人操作为宗旨展开的设计。 设计之初我查阅相关数据及国内外关于机床夹具的文献，在看懂零件图的同时对零件的结构和工艺进行分析，明确粗基准和精基准的选择，确定零件的加工余量与毛坯的尺寸、从而确定零件的加工工艺过程、计算各工序的切削用量及工时。最终完成了本次设计所需的夹具。 Abstract The subject of this desig
n is the formulatio
n of processi
ng tech
nology rules for axle step sleeve a
nd the desig
n of special fixture for drilli
ng_4 holes. O
n the basis of masteri
ng the fu
nctio
n of parts, the process of parts is a
nalyzed. I
n view of the give
n desig
n topic, the desig
n mai
nly carries o
n the desig
n to the machi
ne tool fixture. This fixture body is desig
ned to e
nsure the processi
ng accuracy, productio
n efficie
ncy a
nd easy operatio
n for workers. At the begi
n
ni
ng of the desig
n, I co
nsulted the releva
nt data a
nd the literature about machi
ne tool fixture at home a
nd abroad, a
nalyzed the structure a
nd process of the parts while readi
ng the part drawi
ngs, made clear the selectio
n of rough a
nd precise refere
nce, determi
ned the processi
ng allowa
nce of the parts a
nd the size of the bla
nk, thus determi
ned the processi
ng process of the parts a
nd calculated the cutti
ng of each process. Dosage a
nd hours. Fi
nally, the fixture required for this desig
n has bee
n completed. 目录 摘要1 Abstract 2 一零件的分析1 1.1零件的作用1 1.2零件的工艺分析1 二工艺规程设计2 2.1确定毛坯的制造形式2 2.2基面的选择2 2.2.1粗基准的选择2 2.2.2精基准的选择3 2.3制订工艺路线3 2.4机械加工余量的确定5 2.5确定切削用量及基本工时6 三专用夹具设计16 3.1问题的提出16 3.2定位基准的选择16 3.3定位误差分析16 3.4切削力的计算与夹紧力分析17 3.5夹具设计及操作简要说明 18 参考文献19