_机械制造工艺学课程设计-连接座零件的机械加工工艺规程及钻3xΦ7的孔工序的专用机床夹具（全套图纸） .doc

课程设计设计题目：连接座夹具设计系部：机电工程系专业：机械设计及其自动化学生姓名：班级：机械三班学号同组者：指导教师姓名：职称教授最终评定成绩：长沙学院教务处二一一年二月制机械制造技术基础课程设计任务书题目：设计连接座零件的机械加工工艺规程及钻3x7的孔工序的专用机床夹具。设计要求：熟练使用计算机辅助(软件自选)，独立完成（1）毛坯图、零件毛坯合图各一张(3或4号图CAD出图，手工图为2号)（2）关键工序机械加工工艺规程卡片一张(4号图，CAPP出图)（3）指定工序夹具装配图一张(2或3号图，CAD出图可拼接)（4）夹具部分零件图12张(图幅自定)（5）设计说明书(一份，>10页，正文五号字，含插图)（6）夹具3D装配效果图一张(3或4号图，可渲染)以上均需输出，以书面交设计资料，保留软盘待查。原始资料：零件图样，生产纲领，每月班次、生产条件等。班级机本3班学生指导教师2012年06月29课程设计I摘要夹具是一种装夹工件的工艺装备,它广泛地应用于机械制造过程的切削加工、热处理、装配、焊接和检测等工艺过程中。一个好的夹具设计能提高加工任务的效率和零件加工质量。我们的课程设计任务是加工连接座孔，该零件用来连接水泵和电机的，零件的左端125外圆和水泵壳相连，水泵叶轮通过4个螺钉固定在的孔内；零件的右端121的外圆通过3个螺栓固定和电动机机座相连，零件上40孔是用来和轴承配合的。该零件就是这样实现水泵和电动机的连接，起到连接和固定作用。零件是离心式微电机水泵上的连接座，是用来连接水泵和电机的.左端125外圆与水泵泵壳连接，水泵叶轮在孔内，通过4个螺钉固定；右端121外圆与电动机机座连接,40孔与轴承配合,通过3个螺栓固定，实现水泵与电动机的连接，从而起连接固定作用我的设计任务是设计加工3x7的孔的专用夹具。我的定位原理采用的是一面两孔的，用零件上加工好的2个7的孔定位，用一个圆柱销和一个菱形销和两孔孔配合，用以加工好的125端面作为面定位。从而限制了工件的6个自由度，用夹紧机构夹住工件，用三个钻套对零件加工。关键词：连接座,夹具,钻模夹具课程设计II目录摘要······························································第一部分连接座加工工艺规程第1章零件分析·················································11.1零件的生产纲领············································21.2零件的作用················································2第2章零件的工艺分析········································4第3章毛坯尺寸的设计········································53.1毛坯选择····················································53.2确定加工余量和毛坯尺寸······································53.3分析铸造零件公差等级········································53.4确定加工余量················································63.5确定毛坯尺寸················································63.6毛坯图······················································7第4章选择加工方法和拟定工艺路线····························84.1定位基准的选择··············································84.2制定工艺路线················································9第5章加工的设备和刀具的选择································105.1加工设备选择················································105.2刀具选择····················································11第6章确立切削用量及基本工时································126.1工序车削切削用量············································126.2工序钻3X7孔切削用量及基本时间的确定······················13课程设计III6.2.1钻孔切削用量···········································136.2.2确定进给量·············································136.2.3确定切削速度···········································136.2.4确定基本工时···········································14第二部分夹具设计第7章夹具体总体设计·······································157.1夹具总体设计·················································157.2定位基准的选择及定位原理·····································167.3夹具定位误差分析·············································167.4确定夹紧机构·················································17设计心得·····························································18参考文献·····························································19附录一.工序卡二.工艺过程卡课程设计1第1章零件分析1.1零件的生产纲领依据设计要求Q=6000件/年，结合生产实际，由公式可得N=Qn（1+）（1+）（1-1）其中：N零件的年产量Q产品的年产量n每台产品中该零件的数量备品率废品率图1.1连接座三维图课程设计2图1.2连接座图备品率=10%和废品率=1%分别取和代入公式得该工件的生产纲领N=6666件/年1.2零件的作用该零件用来连接水泵和电机的，零件的左端125外圆和水泵壳相连，水泵叶轮通过4个螺钉固定在的孔内；零件的右端121的外圆通过3个螺栓固定和电动机机座相连，零件上40孔是用来和轴承配合的。该零件就是这样实现水泵和电动机的连接，起到连接和固定作用。该零件是离心式微电机水泵上的连接座，是用来连接水泵和电机的.左端125外圆与水泵泵壳连接，水泵叶轮在孔内，通过4个螺钉固定；右端121外圆与电动机机座连接,40孔与轴承配合,通过3个螺栓固定，实现水泵与电动机的连接，从而起连接固定作用。