下面是小编为大家整理的基于proe拨叉零件工艺及夹具设计,供大家参考。
题
目
基于 proe 的拨叉零件
工艺及夹具设计
摘 摘 要 要
此次设计是对拨叉零件的加工工艺和夹具设计，其零件为锻件，具有体积小，零件复杂的特点，由于面比孔易加工，在制定工艺规程时，就先加工面，再以面为基准来加工其它，其中各工序夹具都采用专用夹具，特别的对于加工大头孔、槽和钻小头孔斜面小孔的工序中，选一面两销的定位方式，并以操作简单的手动夹紧方式夹紧，其机构设计简单，方便且能满足要求。
关键词
拨叉，加工工艺，专用夹具，设计
II
Abstract
This design is to dials forks the components the processing craft and the jig design, its components are the forging, has the volume to be small, components complex characteristic,Because the surface is easier than the hole to process, when formulation technological process, first the machined surface, then processes other take the surface as the datum,In which various working procedures jig all uses the unit clamp, special regarding processes the big end of hole, the trough and drills the capitellum hole incline eyelet in the working procedure, Chooses locate mode which two sells at the same time, and operates the simple manual clamp way clamp, its organization design is simple, the convenience also can satisfy the request.
Key words ：
Dials the fork, the processing craft, unit clamp, design
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目 目
录
摘 摘
要 ························································································································· I
ABSTRACT ·············································································································· Ⅱ
1 1 绪 绪
论 论 ······················································································································1
2 拨叉的分析 ·············································································································2
2.1 拨叉的工艺分析 ·······························································································2 2.2 拨叉的工艺要求 ·······························································································2
3 3 工艺规程设计···········································································································5
3.1 加工工艺过程
················································································································ 5 3.2 确定各表面加工方案 ···································································································· 5 3.2.1 影响加工方法的因素 ·································································································· 5 3.2.2 加工方案的选择 ········································································································· 6 3.3 确定定位基准 ··································································································6 3.2.1 粗基准的选择 ····························································································6 3.2.1 精基准选择的原则 ····················································································7 3.4 工艺路线的拟订 ·······························································································7 3.4.1 工序的合理组合 ························································································8 3.4.2 工序的集中与分散 ····················································································8 3.4.3 加工阶段的划分 ························································································9 3.4.4 加工工艺路线方案的比较 ······································································ 10 3.5 拨叉的偏差，加工余量，工序尺寸及毛坯尺寸的确定 ······························· 12 3.5.1 毛坯的结构工艺要求 ·············································································· 12 3.5.2 拨叉的偏差计算 ······················································································ 12 3.6 确定切削用量及基本工时（机动时间）
······················································ 14 3.7 时间定额计算及生产安排 ·············································································· 22
4 4
镗孔夹具设计 ········································································································ 25
4.1 研究原始质料 ································································································ 25 4.2 定位、夹紧方案的选择 ················································································· 25 4.3 切削力及夹紧力的计算 ·················································································· 25
2 4.4 误差分析与计算 ···························································································· 27 4.5 零、部件的设计与选用 ················································································· 28 4.5.1 定位销选用 ······························································································ 28 4.5.2 夹紧装置的选用 ······················································································ 29 4.6 夹具设计及操作的简要说明 ········································································· 29 5 铣槽夹具设计 ········································································································· 30 5.1 研究原始质料 ································································································· 30 5.2 定位基准的选择 ····························································································· 30 5.3 切削力及夹紧分析计算 ················································································· 30 5.4 误差分析与计算 ···························································································· 32 5.5 零、部件的设计与选用 ················································································· 33 5.5.1 定位销选用 ······························································································ 33 5.5.2 夹紧装置的选用 ······················································································ 33 5.5.3 定向键与对刀装置设计 ········································································· 33 5.6 夹具设计及操作的简要说明 ········································································· 36
6 钻孔夹具设计 ······································...