机械类外文翻译变速箱壳体机械加工工艺设计其他专业.doc

本科毕业设计（论文） （外文翻译） 题 目 75拖拉机变速箱壳体机械加工工艺规程设计 学生姓名 王 娟 专业班级 机械设计制造及其自动化（本科二班） 学 号 200933080 院 （系） 机械工程学院 指导教师(职称) 李 明 郑州科技学院机械工程系 二○一三年五月十八日 Gearbox shell machining process design 《Manufacturing Engineering and Technology—Machining》 Mechanical Industry Press In March 2004, version 1 p560—564 （Serope kalpakjian） （Steven R.Schmid） Abstract Gearbox shell is a more complex structure of spare parts box, its high precision, complex process, and the processing quality will affect the overall performance engine, so it has become the engine manufacturers focus parts one.Machining process planning must guarantee the machining quality of parts, to meet the technical requirements stipulated in drawings, at the same time should also have high productivity and efficiency. Therefore, machining process planning design is an important work, requires designers must have a rich experience in production practice and wide range of mechanical manufacturing technology basic theory knowledge. In the specified procedure, should according to the production of parts and the existing equipment conditions, taking the processing quality into account, productivity and economy requirements, after repeated analysis and comparison, to determine the optimal or the best solution. Technical Characteristics of the gearbox shell The gearbox shell process features are: the structure of complex shape; processing plane, more than holes; uneven wall thickness and stiffness is low; processing of high precision typical of box-type processing part. The main processing of the surface of cylinder block top surface, the main bearing side, cylinder bore, the main and camshaft bearing bore holes and so on, they will directly affect the machining accuracy of the engine assembly precision and performance, mainly rely