摘要
曲轴是发动机中承受冲击载荷、传递动力的重要零件，由于曲轴服役条件恶劣，因此对曲轴材质的选择，毛坯的加工技术、精度、表面粗糙度、热处理和表面强化、动平衡等要求都十分严格，因此要制定合理的加工工艺。首先要根据要求选择合适的毛坯，在加工过程中要选择合理的加工设备及刀具、通用夹具、量具及测量方法，在加工工艺中要进行加工工序设计，加工尺寸计算，零件加工要设计合理的专用夹具。伴随着曲轴加工工艺的发展，加工方法不断改进，加工方法越来越先进，所以设计合理的曲轴加工工艺和装夹的夹具，不但可以提高加工精度，还可以提高生产效率，从而降低生产的成本，以期
提高产品的竞争力。
关键词：曲轴，工艺，夹具
CRANK SHAFT PROCESSING TECHNOLOGY
发动机曲轴ABSTRACT
The crank shaft is to launch to bear pound at to carry a lotus and deliver in the machine motive of importance spare parts, because of the crank shaft undergo military service a condition bad, so to crank shaft material, semi-finished product processing technology, accuracy, surface rough degree, the process of process in want to choose reasonable of process equipments and knife, tongs, quantity and measure method, want to carry on to process a work preface design in process the craft, process size, time settle sum of calculation, the spare parts process to want design reasonable of appropriation tongs. Accompany with crank shaft to process a develop of craft, process a method to not only improve, process a method more and more advanced, so the crank shaft of design reasonable process a craft and pack to clip of tongs, not only can raise to process accuracy,
but also can raise production efficiency, the cost for lowering produce thus with expect exaltation product of competition ability.
KEY WORDS: Crank shaft, Technology, Jig
目录
前言...........................................................................................................
1 曲轴的作用........................................................................................
2 发动机曲轴加工工艺的历史发展演变............................................
3曲轴加工工艺现状............................................................................第1章零件加工工艺设计.........................................................................
1.1 零件工艺分析.................................................................................
1.2 零件加工特点及解决方法.............................................................
1.2.1 零件加工特点.......................................................................
1.2.2 加工零件采取的措施...........................................................
1.3 确定毛坯.........................................................................................
1.3.1 确定毛坯 ...............................................................................
1.3.2 确定机械加工余量...............................................................
1.4 设计毛坯图.....................................................................................
1.4.1 确定毛坯尺寸公差...............................................................
1.4.2 确定圆角半径.......................................................................