毕 业 设 计（论 文）说 明 书
题 学
系
专 业
学
指 导
目生别班 级号教 师弹簧吊耳零件工艺及加工Φ30
两孔的夹具设计
摘 要
本次设计的是弹簧吊耳的加工工艺以及加工Φ30两孔的夹具的设计，弹簧吊耳一般分为前后吊耳两种，前吊耳是用于固定钢板与后桥定位，只能转动，不能移动，需要经常加注黄油或更换胶套，后吊耳则可以向后移动或延伸，一般大货车后吊耳是固定的，只是钢板延伸。小车则是活动吊耳，钢板与吊耳同时活动，主要作用于载重后，使其钢板能够得到延伸、伸展，能有正常的缓冲作用。限制钢板弹簧位置，并随着钢板弹簧上下运动而前后运动。
夹具设计是针对Φ30两孔的专用夹具，考虑到零件的数量比较大，属于大规模生产，所以效率是非常重要的，所以此设计丢去了以往的老方式，采用技术比较先进的气动作为夹紧力来源。零件并没有过高的技术要求，所以采用一个销定位，配合夹具的左右同时夹紧便可满足要求。
关键词：工艺设计、基准选择、切削用量、夹具设计、定位基准、定位误差。
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ABSTRCT
What this design around is the spring shackle processing craft as well as the processing φ30liang hole jig's design, the spring shackle divides into the shackle two kinds generally, the first shackle is uses in the fixed steel plate and the rear axle of car localization, can only rotate, cannot move, needs frequently the replenishment butter or the replacement gum cover, the latter shackle may move backward or extend, after generally big freight vehicle, the shackle is fixed, is only the steel plate extends. The car is moves the shackle, the steel plate and the shackle also moves, leading role after the carrying capacity, enables its steel plate to obtain extends, the extension, can have the normal cushioning effect. Limit spring position, and along with spring vertical motion, but around movement.
The jig design aims at φ30liang the hole unit clamp, considered the components quantity is quite big, belongs to the large scale production, therefore the efficiency is very important, therefore this design has discarded the former old way, uses the technical quite advanced air operated achievement clamping force origin. Components not high specification, therefore uses one to sell the localization, coordinates jig's about simultaneously to clamp then may satisfy the request.
Key word: Craft, datum, cutting specifications, localization datum, position error
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