毕业设计论文_____齿轮轴的加工工艺规程夹具设计.doc

学院专科毕业论文（设计） 齿轮轴的加工工艺规程夹具设计 学生姓名： 学生学号： 院（系）： 工程技术学院 年级专业： 指导教师： 助理指导教师：  摘 要 齿轮轴零件的主要作用是支撑回转零件、实现回转运动并传递转矩和动力。齿轮轴具备传动效率高、结构紧凑和使用寿命长等一系列优点，是通用机械特别是工程机械传动中的重要零件之一。齿轮轴加工材料、热处理方式、机械加工工艺过程的优化，将对提高齿轮轴的加工质量及寿命有着重要借鉴意义。本文对某企业提供的“齿轮轴”零件进行了机械制造工艺规程设计和滚齿专用夹具设计。对于工艺规程设计和夹具设计制订了一套方案。本设计首先分析了齿轮轴零件的作用和加工工艺性，然后进行工艺规程设计，最后是滚齿专用夹具设计。齿轮轴零件的机械综合性能要求较高，一般选择锻件作为毛坯。合理安排工艺路线，划分加工阶段对保证零件加工质量至关重要。使用夹具可以缩短辅助时间，提高劳动生产率，保证加工精度，稳定加工质量，降低对工人的技术要求，扩大机床工艺范围。 本次设计的题目是齿轮轴的机械加工工艺规程及滚齿夹具的设计。首先根据齿轮轴，进行工艺设计，进而确定工艺规程布局，随后，对滚齿夹具进行设计。 关键词： ABSTRACT The main function of the gear shaft is to support rotating parts, achieve rotary motion and transfer torque and power. Gear shaft has a series of advantages, such as high transmission efficiency, compact structure, long service life and so on. It is one of the important parts in the general machinery, particularly the engineering machinery transmission. The optimization of the gear shaft’s machining materials, thermal treatm -ent method and machining process will have great significance on the machiningqual -ity of the gear shaft and the service life. This paper discussed the machinery manufa- cturing process planning and fixture design of milling key of a gear shaft provided by a enterprise. As for process planning and fixture design, there were two different plans for selecting the better one. The paper firstly analyzed the function of the gear s -haft and its mechanical properties, and then planned the machining process, finally, the fixture design. As gear shaft requires the higher machinery comprehensive properties, we usually select the forgings as the forging blank. It is very important for ensuring the processing quality of the gear shaft to arrange the process route reasonably anddivide the processing stage. Using Fixture can reduce the auxiliary time, increase productivity, ensure machining accuracy, stabilize the processing quality, reduce the technical requirements for workers and expand t