零件图
摘要
本次课程设计的目的是对拨叉零件进行机械加工工艺规程设计和孔加工工序的专用夹具设计，使我们提高制定工艺规程、查阅资料并计算工艺要素的能力。首先我们应当根据零件图对零件进行工艺分析，计算确定其生产纲领及生产类型，其次确定毛坯的种类、制造方法、尺寸和公差，拟定工艺路线，确定各工序加工余量、尺寸公差、机床、刀具、量具、切削用量和时间定额，最后确定夹具方案并进行总体设计计算与绘图。最终成果是完成课程设计说明书及相关图纸呈现。结论是因拨叉是变速箱中的重要零件，拨叉零件的形位尺寸、公差精度以及各表面的粗糙度均影响机器整体质量及寿命，因此零件加工必须保证精度要求。
关键词：拨叉；工艺加工；专用夹具
Abstract
The purpose of this course design is to design the machining process rules for the fork parts and the special fixture design for the hole machining process, so thatwe can improve the ability to formulate the process rules, consult data and calculate the process elements. First of all,we shall, according to part drawing parts for process analysis, calculate and determine the production program and the production type, secondly determine the kinds of blank, manufacturing method, the dimension and tolerance, drafting process route, determine the machining allowance, dimensional tolerance in each process, machine tools, cutting tools, measuring tool, cutting dosage and time quota, finalized jig scheme and overall design calculation and drawing. The final result is to complete the course design specification and relevant drawings. The conclusion is that because shifting fork is an important part in gearbox, the shape and position size, tolerance accuracy and roughness of each surface of shifting fork all affect the overall quality and life of the machine, so the machining of the parts must ensure the precision requirements.
Keywords: shifting fork; Process processing; Special fixture
目录
1.零件的工艺分析及生产类型的确定
1.1零件的用途
1.2零件的工艺分析
1.2.1拨叉零件需要加工部位的技术要求
1.2.2审核拨叉的工艺性
1.2.3确定拨叉的生产类型
2.毛坯的选择
3.工艺规程设计
3.1定位基准选择
3.2零件表面加工方法的选择
3.3制定工艺路线
3.4确定毛坯尺寸、设计毛坯图
3.5工序设计
3.5.1选择加工设备与工艺装备
3.5.2确定工序尺寸
3.6切削用量、时间定额的计算
3.6.1切削用量时间定额的计算
4.夹具设计
4.1问题的提出
4.2确定夹具结构方案
4.3夹紧力的计算
4.4绘制夹具总图
4.5绘制夹具体零件图
5.设计总结
6.参考文献
夹具装配图
夹具体
毛坯图
过程卡
夹具设计部分
目录
设计所包含文件
摘要
字数
工序卡
