设计简介
摘 要
本设计是基于分离叉零件的加工工艺规程及一些工序的专用夹具设计。分离叉零件的主要加工表面是平面和孔系。一般来说，保证平面的加工精度要比保证加工精度容易。因此，本设计遵循先面后孔的原则。并将孔与平面的加工明确划分成粗加工和精加工阶段，以保证加工精度。主要加工工序是第一个支持孔定位加工出顶平面，然后顶平面和孔的位置的孔加工工艺配套系列。在后续工序中除与顶平面定位技术和加工其他孔与平面的个体的过程。一般整个工艺的选择。专用夹具的夹具，夹紧方式多选用手动夹紧，夹紧可靠，机构不能自锁，因此生产效率高，适合于大批量、流水线上加工，能够满足设计要求。关键词：分离叉类零件；工艺；夹具；
ABSTRACT
This design is the special fixture for machining process of automobile shift lever parts and process design based on. The main processing surface steering lever parts of the plane and the holes. In general, the plane guarantee precision machining is easier than to guarantee the machining accuracy. Therefore, the design follows the surface after the first hole principle. And the hole and the plane processing clearly divided into roughing and finishing stages of processing to ensure accuracy. The main process is the first locating hole processing the top plane, and then the hole processing technology series top plane and the position of the hole. Process in addition to individual and the top plane positioning technology and other processing of the hole and the plane is in in the follow-up process. By using the coordinate boring hole. In general the whole process selection. Fixture fixture, clamping means more choice of pneumatic clamping, clamping reliable, agencies can not lock, therefore the production efficiency is high, suitable for large batch, line processing, can meet the design requirements.
Keywords: chemical pipe parts; technology; fixture;
目 录
摘 要········································································································· II
ABSTRACT······························································································· III
第1章 机械加工工艺规程设计····································································· 2
1.1 零件的分析················································································································ 2
1.1.1 零件的作用··········································································································· 2
1.1.2 零件的工艺分析···································································································· 2
1.2 分离叉加工的主要问题和工艺过程设计所应采取的相应措施······································ 3
1.2.1 孔和平面的加工顺序······························································································ 3
1.2.2 孔系加工方案选择································································································· 3
1.3 分离叉加工定位基准的选择······················································································· 3
1.3.1 粗基准的选择······································································································· 3
1.3.2 精基准的选择······································································································· 3
1.4 分离叉加工主要工序安排··························································································· 4
1.5 机械加工余量、工序尺寸及毛坯尺寸的确定······························································· 5
1.6 毛坯种类的选择········································································································· 6
1.7 选择加工设备和工艺装备··························································································· 6
1.7.1 机床选用·············································································································· 6
1.7.2 选择刀具·············································································································· 7
1.7.3 选择量具·············································································································· 7
1.8 机械加工余量、工序尺寸及毛坯尺寸的确定······························································· 7
1.9确定切削用量及基本工时（机动时间）······································································· 8
1.10 时间定额计算及生产安排······················································································· 14
第2章分离叉内侧面铣夹具设计·································································· 16
2.1研究原始质料············································································································· 16
2.2定位基准的选择·········································································································· 16
2.3 切削力及夹紧分析计算······························································································· 16
2.4 误差分析与计算········································································································· 17
2.5 零、部件的设计与选用······························································································· 18
2.5.1定位销选用·········································································································· 18
2.5.2 定向键装置设计·································································································· 19
2.6 夹具设计及操作的简要说明························································································· 20
总 结········································································································· 22
参考文献···································································································· 23
致 谢········································································································· 24
