摘要高效率、高精度加工是数控机床加工最为主要的特点之一。利用数控机床加工，其产品加工的质量一致性好，加工精度和效率均比普通机床高出了很多，尤其在轮廓不规则、复杂的曲线或曲面、多工艺复合化加工和高精度要求的产品加工时，其优点是传统机床所无法比拟的。本次毕业设计研究的课题是某系汽车制动钳体加工工艺及装备设计，主要的内容如对零件进行分析，主要是零件作用、结构和工艺的分析，通过零件分析可以了解零件的基本情况，而工艺分析可以知道零件的加工表面和加工要求。根据零件图提出的具体加工要求，确定毛坯的制造形式和尺寸。进行基面的选择，确定加工过程中的粗基准和精基准。根据选好的基准，制定工艺路线方案，通常情况下制定两种以上的工艺路线方案，通过工艺方案的比较分析，再确定出可以使零件的几何形状、尺寸精度及位置精度等技术要求得到合理保证的工艺路线方案。根据已经确定的工艺路线，选择加工设备及工艺装备，再确定每一工步的切削用量。本文通过分析汽车制动钳的结构特点和加工要求，制定了一套较合理的加工工艺和夹具设计，从而为保证该零件的加工精度将提供一种经济实用的工艺装备，具有一定的实用价值。通过对各种定位夹紧装置的分析比较，选择并组合了一套既能够满足加工要求的，又比较简洁的装置及加工工艺制定，并对各工步进行数控编程。43814

毕业论文关键词：数控加工，工艺流程，工艺装备，夹具设计

Components Numerical Control Processing Craft Analysis and Craft Equipment Design

ABSTRACT

The high efficiency, the precision work are one of numerical control engine bed processing most main characteristics. Using the numerical control engine bed processing, its product processing quality uniformity is good, the processing precision and the efficiency outdo compared to the ordinary engine bed very much, especially when outline not rule, complex curve or curved surface, multi-craft recombine processing and high accuracy request product processing, its merit is the traditional engine bed is unable to compare. This topic is a series of automobile brake caliper body processing technology and equipment design, the main content such as the analysis of parts, mainly is the role of parts, structure and process analysis, through the parts analysis to understand the parts of the basic situation of the process analysis can know the parts processing and surface processing requirements. According to the specific processing requirements of the parts diagram, determine the form and size of the blank. The choice of the base surface to determine the processing of coarse and fine reference base. According to the chosen benchmark, make the craft route scheme, usually under formulation more than two kinds of process route scheme, through comparative analysis of process scheme, then determine can make the part shape, size precision and position precision technical requirements to be a reasonable assurance craft route scheme. According to the process route has been determined, select the processing equipment and process equipment, and then determine the amount of cutting each step of the cutting.This article through the analysis support components, the air compressor snifting valve lid as well as the supporting the unique feature and the processing request which wraps, has formulated a set of reasonable jig design, thus for guaranteed this components the processing precision will provide one economical practical craft equipment, will have certain practical value. Through to each kind of localization clamp analysis comparison, chose and combines a set both to be able to satisfy the processing request, and the quite succinct installment, and carried on the numerical control programming to each step working procedure.