毕业设计（论文）-拖拉机倒档拨叉的加工工艺及钻2-M12孔具设计（全套图纸）.docx

教学单位 教学单位 宝鸡文理学院 学生学号 201194014090 编 号 JX2015JZ090 本科毕业论文（设计）题 目 倒档拨叉的加工工艺分析及夹具设计 学生姓名　 专业名称　 机械设计制造及其自动化 指导教师　 2015 年 5 月 15 日PAGE \* MERGEFORMATI倒档拨叉的机械加工工艺及夹具设计摘要：随着科学技术的飞速发展，倒档拨叉在我们的生活中被广泛的应用，如汽车，拖拉机，机械设备等，在生活中很多地方都有用到拨叉。因此拨叉在未来是有很广阔的应用前景。这次的设计是以CAD为基本的画图软件，来完成倒档拨叉的设计。拨叉是车辆机械等设备的主要倒档机构之一，本设计主要讲述了倒档拨叉的机械加工工艺的制定过程及其专用夹具的设计。本设计根据所给拨叉的零件图、技术要求及加工环境与设备等，设计出了最适合该拨叉的加工工艺过程，并选择其中的一道工序——在?19.1mm 孔的轮毂上钻孔、锪孔?13.5mm 、攻丝 2-M12 ×1.75来进行夹具的设计。该设计的内涵是“简单、高效、经济”地让厂家生产出符合要求的产品。在经过多次的修改和验证，终于在老师的帮助下，通过文中所给出的方法，实现了本次设计的要求。关键词：倒档拨叉;加工工艺；夹具设计全套图纸，加153893706Reverse shift fork of machining and fixture designAbstract：With the rapid development of science and technology, Reverse shift fork were widely used in our life, such as automobiles, walking tracto， machinery equipment, etc., in their many parts are useful to the Reverse shift fork. So the Reverse shift fork is a very broad application prospects in the future.This design is basic CAD drawing software, to complete the design of the Reverse shift fork. Reverse shift fork is one of the main drive a vehicle mechanical devices such as, this paper mainly discusses the Reverse shifting fork machining process and fixture design. This design according to the Reverse shifting fork of the given detail drawings, technical requirements and batch processing, the processing technology of the design the most suitable for the Reverse shifting fork process, and select the procedure - Wheels ? 19.1mm hole drill, countersink ? 13.5mm, tapping 2-M12x1.75 for fixture design. The connotation of the design is simple, efficient, economy \let the manufacturer to produce products that meet the requirements.After several times of modification and validation, and finally with the help of the teacher, through the method presented in this paper, achieved the design requirements.Key words: Rever