活塞式空压机部件加工工艺研发-活塞加工及夹具设计.docVIP

PAGE 25 活塞式空压机部件加工工艺研发-活塞加工及夹具设计 摘 要 通过对活塞式空压机发展状况、国内外夹具的现状和零件综合分析，设计了一条活塞的加工工艺路线和一套生产方案，其中主要包含：选取毛坯材料、确定毛坯制造方法、选取粗精基准、拟定合理工艺线路、确定机械加工余量、确定各个工序加工余量、计算工序时间等。根据工序镗销孔设计了一套镗销孔专用夹具以确保加工精度。其中包含选取定位元件、夹紧装置、标准件和夹具体的设计。最后，通过分析定位误差和计算夹紧力来验证夹具的合理性。 关键词：活塞；工艺路线；工序；定位；夹具设计 Piston air compressor parts processing technology development -piston processing and fixture design Abstract By analyzing the development background of the piston, the development status of the fixtures at home and abroad, and the structure of the parts, a processing route and a set of production plans for the piston are designed, which mainly include: selecting the blank material, determining the blank manufacturing method, selecting the rough and fine benchmark Draw up reasonable process lines, determine the machining allowance, determine the machining allowance for each procedure, calculate the procedure time, etc. A set of special fixtures for boring pin holes is designed according to the process of boring pin holes to ensure machining accuracy. It includes the specific design of selected positioning components, clamping devices, standard parts and clamps. Finally, the rationality of the fixture is verified by analyzing positioning errors and calculating clamping force. Keywords: Piston; process route; process; positioning; fixture design 目录 TOC \o 1-3 \h \u 6353 1.前言 1 18986 1.1研究背景和意义 1 24636 1.2国内外发展研究现状 1 21411 2.活塞的工艺分析 2 31946 2.1活塞的作用 2 19115 2.2活塞零件分析 2 31857 2.3活塞的重要结构及加工要求 3 17615 2.3.1活塞关键尺寸 3 14739 2.3.2明确活塞加工要求 4 32356 2.4确定活塞生产纲领 4 24712 2.5毛坯的设计 5 6790 2.5.1选取毛坯材料 5 13497 2.5.2确定制造方法 5 4424 2.5.3毛坯的设计 6 12051 2.6定位基准的选择 6 23678 2.6.1粗基准的选择 7 7240 2.6.2精基准的选择 7 12152 2.7工艺路线的拟定 7 15915 2.8加工余量确定 9 14715 2.9确定切削用量以及工时定额 10 4289 3.镗活塞销孔夹具设计 18 12545 3.1定位元件的设计 18 6395 3.1.1定位心轴 19 5646 3.1.2辅助定位销 19 4671 3.2定位误差计算 20 19485 3.3夹紧元件 20 14626 3.3.1活动压板 20 28777 3.3.2压板支架 21 9471 3.3.3六角头螺栓 21 14249 3.3.4开口垫圈 22 28504 3.3.5六角螺母 22 13