夹具装配图
摘要
本次课程设计的题目是拨叉25mm孔夹具设计，通过此次设计，使课本上学到的理论知识在这次课程设计中得到实践，机械制造基础课本上学到的知识，诸如，定位误差的计算，机床类型的选择，加工方式的选择，夹具体设计应注意的问题等，在这次课程设计中都得到了应用，增加了自己理论联系实际的能力:
1．运用所学基本理论知识，正确解决了工件在加工时的定位和夹紧问题，选择合理的方案，进行必要的计算，根据题意设计出符合要求的低成本夹具。
2．收集有关资料，掌握正确的夹具设计思想、方法和手段，学会了正确使用有关手册及其它技术资料。
3．分析研究结构工艺性问题，提高结构设计能力。
4．进一步了解了有关机床、刀具和量具等的工装知识。
Abstract
The course design is the subject of Bocha 16 mm hole for fixture design, through the design, so that school textbooks to the theoretical knowledge in this practice be in the curriculum design, machinery manufacturing base of knowledge to go to school textbooks, such as , Positioning errors, machine types of choice, the choice of processing methods, the folder should pay attention to the specific design issues, in the course design have been applied to increase its ability to integrate theory with practice:
1. By the use of basic theoretical knowledge, the correct solution in the processing of the workpiece positioning and clamping problem, a reasonable choice of programmes, carry out the necessary calculations, based on that design intended to meet the requirements of low-cost fixture.
2. To collect relevant information, have the right fixture design ideas, ways and means to learn the correct use of the manuals and other technical information.
3. Analysis of the structure of issues, enhance structural design capacity.
4. Learn more about machine tools, cutting tools and measuring tools, such as the tooling knowledge.
目录
1拔叉零件的工艺分析1
2机械加工工艺设计2
2.1确定生产类型2
2.2确定毛坯2
2.2.1确定毛坯种类2
2.2.2确定铸件加工余量及形状2
2.3绘制拔叉铸造毛坯简图3
3拟定拔叉工艺路线3
3.1定位基准的选择3
3.1.1精基准的选择4
3.1.2粗基准的选择4
3.2制定工艺路线4
3.3表面加工方法的确定5
3.4加工阶段的划分5
3.5工序的集中与分散6
3.6工序顺序的安排6
3.7确定工艺路线6
4加工余量、工序尺寸和公差的确定7
4.1钻φ25孔的工序尺寸7
4.2钻孔工步7
4.3时间定额的计算8
4.4其它时间计算8
5夹具设计8
5.1夹具选择8
5.1.1问题的提出10
5.1.2夹具设计10
5.2夹具设计及操作的简要说明10
6机床夹具设计体会与展望11
7参考文献13
拨叉
夹具体
夹具设计部分
字数
工序卡
拨叉毛坯
摘要
目录
设计所包含文件
过程卡
