导向块零件加工工艺及专用夹具设计_毕业论文.doc

导向块零件加工工艺及专用夹具设计 摘要：在生产过程中，使生产对象（原材料，毛坯，零件或总成等）的质和量的状态发生直接变化的过程叫工艺过程，如毛坯制造，机械加工，热处理，装配等都称之为工艺过程。在制定工艺过程中，要确定各工序的安装工位和该工序需要的工步，加工该工序的机车及机床的进给量，切削深度，主轴转速和切削速度，该工序的夹具，刀具及量具，还有走刀次数和走刀长度，最后计算该工序的基本时间，辅助时间和工作地服务时间。 根据给定的生产纲领和零件的结构特点及加工精度要求，制定工艺方案，进行工艺计算，绘制并填写加工工艺综合卡, 根据该孔系的尺寸精度和位置精度的要求，确定定位基准和定位方式，设计夹紧机构、导向机构、绘制夹具总装图，并拆画夹具的主要零件图。 关键词： 工序 工艺 工步 Guide block part processing and special fixture design Abstract：In the production process so that the production target (of raw materials, blank, or assembly of parts, and so on) the quality and quantity of the state direct the process of change is called process, such as blank manufacturing, machining, heat treatment, assembly, have called the process Process. In the course of the development process, it is necessary to determine the process to install the work place and the process needed further work, the process of the processing machine tools and locomotives of the feed rate, cutting depth, cutting speed and spindle speed, the process of the fixture, and cutting tools Measuring, and cutting the number and length of the knife away, the final calculation of the basic processes of time, support time and work to serve the time. As said by the given production package and part of the structural physiognomies and precision requirements. Grow technology solutions for process controls, draw and fill a comprehensive card processing, Depending on the size and positional accuracy of the holes of the request, determine positioning reference and positioning. Holding mechanism design, guide mechanism, drawing fixture assembly diagram, and the demolition of the main parts diagram drawing fixture. key words: Process Technology Step Allowance Orientation Program目 录 前言…………………………………………………………………………………… … 1 1.分导向块的加工工艺设计 3 1.1零件结构功用分析 3 1.2零件图纸分析 3 1.1.1主要技术条件 5 2.毛坯的结构确定 5 2.1毛坯的结构工艺要求 5 2.1.1毛坯形状、尺寸确定的要求 5 2.1.2毛坯类型 5 2.1.3毛坯余量确定 6 3.基面的选择 7 4.工艺过程设计中应考虑的主要问题 7 4.1加工方法选择的原则 7 4.1.1加工阶段的划分 8 4.1.2工序的集中与分散……………………………………………………………9 4.1.3工序的