机械5

摘要 到目前为止，夹具仍是重要的机电工具，用户只需要按品种，选择购买规格。根据夹具的范围，可分为一般固定、可调式固定和专用夹具。虽然工装夹具和产品息息相关，需要根据产品的不同做出改变，通常模具的特殊性质已经成为一个独立的行业;夹具是先进的当代设计的组合和符合节能原则。本文首先对离合器齿轮零件进行了机械加工工艺分析及规程的设计，然后对4个16mm槽进行了专用的铣床夹具设计。 关键词：离合器齿轮；机械加工；加工工艺；专用夹具 Abstract Up to
now, the fixture is still a
n importa
nt mecha
nical a
nd electrical tool, users o
nly
need to choose the purchase specificatio
n accordi
ng to the variety. Accordi
ng to the scope of fixture, it ca
n be divided i
nto ge
neral fixture, adjustable fixture a
nd special fixture. Although the fixture is closely related to the product a
nd
needs to be cha
nged accordi
ng to the differe
nt products, the special
nature of the mold has become a
n i
ndepe
nde
nt i
ndustry; the fixture is a combi
natio
n of adva
nced co
ntemporary desig
n a
nd co
nforms to the pri
nciple of e
nergy savi
ng. I
n this paper, the machi
ni
ng process a
nalysis a
nd specificatio
n desig
n of clutch gear parts are carried out firstly, a
nd the
n the special milli
ng fixture desig
n is carried out for four 16mm grooves. Key words: clutch gear; machi
ni
ng; processi
ng tech
nology; special fixture 目录 摘要I Abstract II 1绪论1 2零件的工艺分析及生产类型的确定2 2.1零件的作用2 2.2零件的工艺性2 2.3零件的生产类型3 3选择毛坯，确定毛坯尺寸，设计毛坯-毛坯零件图4 3.1选择毛坯4 3.2确定机械加工余量4 3.3确定毛坯尺寸4 3.4确定毛坯尺寸公差4 3.5绘制毛坯图5 4选择加工方法，制定工艺路线7 4.1定位基准的选择7 4.2零件表面加工方法的选择7 4.3制订工艺路线8 5工序设计10 5.1选择加工设备与工艺装备10 5.2确定工序尺寸11 6确定切削用量及基本时间13 7铣削16槽加工工序专用夹具的设计18 7.1明确设计任务，了解零件加工工艺过程18 7.2确定定位方案18 7.2.1基准的选择18 7.2.2确定定位夹紧方案18 7.2.3定位元件的选择及设计19 7.3定位误差的计算与分析20 7.4计算切削力及实际所需的夹紧力21 7.5设计夹紧机构并验算机构所能产生的夹紧力22 7.6主要元件的设计24 7.7对刀元件及夹具体24 7.8绘制夹具装配总图24 图7.5 25 总结26 参考文献28 致谢29