K116-双联齿轮零件机械加工工艺及滚齿夹具设计.zip

毕业设计（论文）中期报告毕业设计（论文）中期报告 题目：双联齿轮零件机械加工工艺及其典题目：双联齿轮零件机械加工工艺及其典 型夹具设计型夹具设计 系 别 机电信息系 专 业 机械设计制造及其自动化 班 级 姓 名 学 号 导 师 2013 年 3 月 16 日 1 设计（论文）进展状况 1.1 借阅相关书籍，搜集相关资料，对这次设计将要用到的基础知识进行学习和了解， 分析双联齿轮的结构特点与技术要求，建立该零件的三维模型。 设计该零件毛坯，查表法确定各表面的总余量 主要面尺寸零件尺寸总余量毛坯尺寸 87.5 外圆 87.5592.5 57.5 外圆 57.5461.5 4242547 42 长 42547 18 厚 18321 20 厚 20323 花键孔 28327 由此绘出零件毛坯图 1.2 对所给零件进行工艺分析，基准的选择，进而制定出两套工艺方案，通过对比选 择其中一种制定出更详细的工序如下： 1 毛坯锻造 2 正火 3 粗车外圆及端面，留余量 1.52mm，钻、镗花键底孔至尺寸 28H12 4 拉花键孔 5 钳工去毛刺 6 上心轴，精车外圆，端面及槽至要求 7 检验 8 滚齿（Z=33）留余量 0.070.1mm 9 插齿（Z=21）留余量 0.040.06 10 倒角 11 钳工去毛刺 12 剃齿（Z=33）公法线长度至尺寸上限 13 剃齿（Z=21）采用螺旋角度为 5 度的剃齿刀，剃齿后公法线长度至尺寸上 限 14 齿部高频淬火 15 推孔 16 衍齿 注：1）正文：宋体小四号字，行距 20 磅，单面打印；其他格式要求与毕业论文相同。 2）中期报告由各系集中归档保存，不装订入册。 17 总检入库 1.3 选择各加工表面的机械加工余量，确定切削用量及基本工时，选取合适的机床。 1.4 对第 4 道工序（拉花键孔）进行夹具设计，有定位分析（自由度） 、夹具的定位 误差计算等。 1.5 初步绘制二维夹具装配图、填写工序卡片、工艺卡片 1.6 在数据库中查找外文翻译并准确翻译为中文 2 存在问题及解决措施 2.1 存在问题：刀具及切削参数的确定，夹具的设计尺寸、装配图的绘制等 2.2 解决措施：查阅相关资料书籍，复习相关课程，熟悉夹具设计、加强练习，熟练 AutoCAD 工程图绘制 3 后期工作安排 3.1 继续完善前期所有的零件分析计算，工序卡片和工艺卡片的填写，完成零件图、 装配图绘制等（第 10 周第 12 周） 3.2 根据需求再设计一套夹具（第 13 周） 3.3 整理检查计算过程，撰写毕业论文（第 14 周第 15 周） 3.4 准备答辩（第 16 周） 指导教师签字： 年 月 日 Int J Adv Manuf Technol (1999) 15:171181 1999 Springer-Verlag London Limited Development of Automated Fixture Planning Systems W. Ma, J. Li and Y. Rong Department of Mechanical Engineering, Worcester Polytechnic Institute, Worcester, MA, USA Fixturing is an important manufacturing activity. The computer- aided fi xture design technique is being rapidly developed to reduce the lead time involved in manufacturing planning. An automated fi xture confi gurationdesignsystemhasbeen developed to select automatically modular fi xture components and place them in position with satisfactory assembly relation- ships. In this paper, an automated fi xturing planning system is presented in which fi xturing surfaces and points are auto- matically determined based on workpiece geometry and oper- ational information. Fixturing surface accessibility, feature accuracy, and fi xturing stability are the main concerns in the fi xture planning. The system development, the fi xture planning decisionprocedure,andanimplementationexampleare presented in the paper. Keywords: Accuracy; Clamping; Fixture planning; Locating 1.Introduction Fixturing is an important manufacturing activity in the pro- duction cycle. A computer-aided (or automated) fi xture design (CAFD) technique has been developed as part of CAD/CAM integration 1. The development of CAFD contributes to the reduction of manufacturing lead time, the optimisation of manu- facturing operations, and the verifi cation of manufacturing pro- cess designs 2. CAFD plays an important role in fl exible manufacturing systems (FMS) and computer-integrated manu- facturing systems (CIMS) 3. Figure 1 outlines the activities for fi xture design in manufac- turing systems which include three major aspects: set-up plan- ning, fi xture planning, and fi xture confi guration design 4. The objective of set-up planning is to determine the number of set- ups, the position and orientation of the workpiece in each set- up, and also the machining surfaces in each set-up. Fixture planning determines the locating and clamping points on work- piece surfaces. The task of fi xture confi guration design is to select fi xture components and place them into a fi nal confi gur- Correspondence and offprint requests to: Dr Kevin Rong, Department of Mechanical Engineering, Worcester Polytechnic Institute, Worcester, MA 01609-2280, USA. E-mail: rongKwpi.edu Fig. 1. Fixture design in manufacturing systems. ation to fulfi l the functions of locating and clamping the workpiece. An automated modular fi xture confi guration design system has been developed in which, when fi xturing surfaces and points are selected on the workpiece model, fi xture units are automatically generated and placed into position with the assistance of fi xture component assembly relationships 4,5. This paper deals with fi xture planning when the fi xturing surfacesandpositionsontheworkpieceareselected automatically. Previous papers on fi xture design analysis have been pub- lished, but a comprehensive fi xture planning system which can be used to generate fi xture plans for industrial applications has not been developed. Previous work includes: a method for the automated determination of fi xture location and clamping derived from a mathematical model 6; an algorithm for the selection of locating and clamping positions which provide the maximum mechanical leverage 7; kinematic analysis based fi xture planning 8,9; a fi xturing grade and dependency grade based fi xturability analysis 10; automated selection of set-ups 172W. Ma and Y. Rong with consideration of tolerance factors of orientation errors in fi xture design 11, and fi nally a geometric analysis based 2D fi xture planning system 12. In our previous research, fi xturing features 13, fi xturing accuracy 14,15, geometric constraints 16, and fi xturing surface accessibility 17 have been stu