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17198051656048358.zip <link href="/image.php?url=https://csdnimg.cn/release/download_crawler_static/css/base.min.css" rel="stylesheet"/><link href="/image.php?url=https://csdnimg.cn/release/download_crawler_static/css/fancy.min.css" rel="stylesheet"/><link href="/image.php?url=https://csdnimg.cn/release/download_crawler_static/89504639/raw.css" rel="stylesheet"/><div id="sidebar" style="display: none"><div id="outline"></div></div><div class="pf w0 h0" data-page-no="1" id="pf1"><div class="pc pc1 w0 h0"><img alt="" class="bi x0 y0 w1 h1" src="/image.php?url=https://csdnimg.cn/release/download_crawler_static/89504639/bg1.jpg"/><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">东莞理<span class="_ _0"></span>工学院</div><div class="t m0 x2 h3 y2 ff2 fs0 fc0 sc0 ls0 ws0">《机械制造技术基础<span class="ff3">》课程<span class="_ _0"></span>设</span></div><div class="t m0 x3 h3 y3 ff3 fs0 fc0 sc0 ls0 ws0">计</div><div class="t m0 x4 h4 y4 ff3 fs1 fc0 sc0 ls0 ws0">设计题目<span class="_ _0"></span>：机械零<span class="_ _0"></span>件制造工艺<span class="_ _0"></span>分析与夹<span class="_ _0"></span>具设计<span class="ff4 sc1"> </span></div><div class="t m0 x4 h4 y5 ff3 fs1 fc0 sc0 ls0 ws0">学生姓名<span class="_ _0"></span>：<span class="ff4 sc1"> </span>彭明生<span class="_ _0"></span><span class="ff4 sc1"> </span></div><div class="t m0 x4 h4 y6 ff3 fs1 fc0 sc0 ls0 ws0">学<span class="ff4 sc1"> </span>号：<span class="ff4 sc1"> 2021413010228 </span></div><div class="t m0 x4 h4 y7 ff3 fs1 fc0 sc0 ls0 ws0">院<span class="ff4 sc1"> (</span>系<span class="ff4 sc1">)</span>：<span class="ff4 sc1"> </span>工<span class="_ _0"></span>程师学院</div><div class="t m0 x4 h4 y8 ff3 fs1 fc0 sc0 ls0 ws0">专业班级<span class="_ _0"></span>：<span class="ff4 sc1"> 21<span class="_ _1"> </span></span>级<span class="ff4 sc1"> </span>机器人<span class="_ _2"> </span><span class="ff4 sc1">1<span class="_ _1"> </span></span>班<span class="ff4 sc1"> </span></div><div class="t m0 x5 h4 y9 ff3 fs1 fc0 sc0 ls0 ws0">指导教师<span class="_ _0"></span>：<span class="ff4 sc1"> </span>李思觅<span class="_ _0"></span><span class="ff4 sc1"> </span></div><div class="t m0 x4 h4 ya ff3 fs1 fc0 sc0 ls0 ws0">起止时间<span class="_ _0"></span>：<span class="ff5 fs2 sc1">2024 <span class="ff6">年</span> 6<span class="_ _3"> </span><span class="ff6">月</span> 25 <span class="ff6">日<span class="ff7">—</span></span>2024 <span class="ff6">年</span> 7<span class="_ _3"> </span><span class="ff6">月</span> 6 <span class="ff6">日</span></span></div></div><div class="pi" data-data='{"ctm":[1.611830,0.000000,0.000000,1.611830,0.000000,0.000000]}'></div></div><div id="pf2" class="pf w0 h0" data-page-no="2"><div class="pc pc2 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="/image.php?url=https://csdnimg.cn/release/download_crawler_static/89504639/bg2.jpg"><div class="t m0 x6 h4 yb ff8 fs1 fc0 sc0 ls0 ws0">《机械制<span class="_ _0"></span>造技术基础<span class="_ _0"></span>》课程设<span class="_ _0"></span>计任务书</div><div class="c x7 yc w2 h5"><div class="t m0 x8 h6 yd ff9 fs3 fc0 sc1 ls0 ws0">学生姓名</div></div><div class="c x9 yc w3 h5"><div class="t m0 x8 h6 yd ff9 fs3 fc0 sc1 ls0 ws0">专业班级</div></div><div class="c xa yc w4 h5"><div class="t m0 xb h6 yd ff9 fs3 fc0 sc1 ls0 ws0">学号</div></div><div class="c x7 ye w5 h7"><div class="t m0 xc h6 yf ff9 fs3 fc0 sc1 ls0 ws0">指导教师姓名及职称</div></div><div class="c x9 ye w6 h7"><div class="t m0 xc h6 yf ff9 fs3 fc0 sc1 ls0 ws0">李思觅<span class="ffa"> </span>讲师</div></div><div class="c x7 y10 w7 h8"><div class="t m0 x8 h6 y11 ff9 fs3 fc0 sc1 ls0 ws0">题<span class="ffa"> <span class="fc2 sc1"> </span></span></div><div class="t m0 x8 h6 y12 ff9 fs3 fc0 sc1 ls0 ws0">目</div></div><div class="c xd y10 w8 h8"><div class="t m0 xc h6 y13 ff8 fs3 fc0 sc0 ls0 ws0">拨叉制造工艺<span class="_ _0"></span>分析与夹具设<span class="_ _0"></span>计<span class="ffa sc1">(<span class="ff9">材料<span class="_ _4"> </span></span>45#<span class="ff9">钢锻件；假定产量：</span>20000<span class="_ _4"> </span><span class="ff9">件</span>/<span class="ff9">年</span>) </span></div></div><div class="c x7 y14 w9 h9"><div class="t m0 xc h6 y15 ff9 fs3 fc0 sc1 ls0 ws0">设计主要任务、具体要求和进度安排（课程设计时间共两周<span class="_ _4"> </span><span class="ffa">10<span class="_ _4"> </span></span>个工作日）</div><div class="t m0 xe h6 y16 ff5 fs3 fc0 sc1 ls0 ws0">1.<span class="_ _5"> </span><span class="ff9">布置任<span class="_ _0"></span>务，零件<span class="_ _0"></span>工艺审<span class="_ _0"></span>查，了解<span class="_ _0"></span>零件的<span class="_ _0"></span>结构特点<span class="_ _0"></span>和技术<span class="_ _0"></span>要求，根<span class="_ _0"></span>据生产<span class="_ _0"></span>类型</span></div><div class="t m0 xe h6 y17 ff9 fs3 fc0 sc1 ls0 ws0">和生产条件，对零件的结构工艺性进行分析<span class="ff5">(0.5<span class="_ _6"> </span></span>天<span class="ff5">);</span></div><div class="t m0 xe h6 y18 ff5 fs3 fc0 sc1 ls0 ws0">2.<span class="_ _5"> </span><span class="ff9">收集相关参考资料，查阅机械制造技术基础课程设计指导书</span>(1<span class="_ _6"> </span><span class="ff9">天</span>)<span class="ff9">；</span></div><div class="t m0 xe ha y19 ff5 fs3 fc0 sc1 ls0 ws0">3.<span class="_ _5"> </span><span class="ff9">选择毛坯，确定毛坯加工余量，<span class="ff6">并<span class="ff1 sc0">绘制毛坯图<span class="_ _4"> </span></span><span class="ff4">3<span class="_"> </span><span class="ff8 sc0">号图</span></span></span></span>(1<span class="_ _6"> </span><span class="ff9">天</span>)<span class="ff9">；</span></div><div class="t m0 xe h6 y1a ff5 fs3 fc0 sc1 ls0 ws0">4.<span class="_ _5"> </span><span class="ff8 sc0">机械加工工艺<span class="_ _0"></span>规程设计</span><span class="ff9">：</span></div><div class="t m0 xc h6 y1b ff9 fs3 fc0 sc1 ls0 ws0">选择定位基准、加工方法和方案，拟定工艺路线等<span class="ff5">(1<span class="_ _6"> </span></span>天<span class="ff5">);</span></div><div class="t m0 xc h6 y1c ff9 fs3 fc0 sc1 ls0 ws0">确定工序内容，进行工序尺寸计算等<span class="ff5">(1<span class="_ _6"> </span></span>天<span class="ff5">);</span></div><div class="t m0 xc h6 y1d ff9 fs3 fc0 sc1 ls0 ws0">填写<span class="ff8 sc0">工艺文件</span><span class="ff5">(1<span class="_ _6"> </span></span>天<span class="ff5">)</span>。</div><div class="t m0 xe h6 y1e ff5 fs3 fc0 sc1 ls0 ws0">5.<span class="_ _5"> </span><span class="ff8 sc0">机床夹具设计</span></div><div class="t m0 xc h6 y1f ff9 fs3 fc0 sc1 ls0 ws0">设计钻</div></div><div class="c x4 y14 wa hb"><div class="t m0 xf hc y20 ffb fs3 fc1 sc1 ls0 ws0">?</div></div><div class="c x10 y14 wb hd"><div class="t m0 xf ha y21 ff7 fs3 fc1 sc1 ls0 ws0">A</div></div><div class="c x11 y14 wc he"><div class="t m1 x12 hf y22 ffb fs4 fc1 sc1 ls0 ws0">+</div></div><div class="c x13 y14 wd he"><div class="t m1 x12 hf y22 ffb fs4 fc1 sc1 ls0 ws0">0.019</div></div><div class="c x11 y14 we h10"><div class="t m1 x12 hf y23 ffb fs4 fc1 sc1 ls0 ws0">0</div></div><div class="c x7 y14 w9 h9"><div class="t m0 x14 h6 y1f ff9 fs3 fc1 sc1 ls0 ws0">（见任<span class="_ _0"></span>务分配<span class="_ _0"></span>）<span class="fc0">孔工<span class="_ _0"></span>序的夹<span class="_ _0"></span>具结<span class="_ _0"></span>构方案<span class="_ _0"></span>，如设<span class="_ _0"></span>计定位<span class="_ _0"></span>及夹紧<span class="_ _0"></span>方案，<span class="_ _0"></span>分</span></div><div class="t m0 xc h6 y24 ff9 fs3 fc0 sc1 ls0 ws0">析定位误差等。</div><div class="t m0 xc h6 y25 ff8 fs3 fc0 sc0 ls0 ws0">绘制夹具设计<span class="_ _0"></span>装配图<span class="ff5 sc1">(A0<span class="_ _6"> </span><span class="ff9">或<span class="_ _4"> </span></span>A1<span class="_ _6"> </span><span class="ff9">图幅<span class="_ _4"> </span></span>1<span class="_ _6"> </span><span class="ff9">张</span>) (2<span class="_ _6"> </span><span class="ff9">天</span>)<span class="ff9">；</span></span></div><div class="t m0 xc h6 y26 ff8 fs3 fc0 sc0 ls0 ws0">绘制钻模板、<span class="_ _0"></span>钻套、夹具体<span class="_ _0"></span>等零件图<span class="ff5 sc1">(<span class="ff9">并要求零件图<span class="_ _4"> </span></span>5<span class="_ _6"> </span><span class="ff9">张以上</span>) (1<span class="_ _6"> </span><span class="ff9">天</span>)<span class="ff9">。</span></span></div><div class="t m0 xe h6 y27 ff5 fs3 fc0 sc1 ls0 ws0">6.<span class="_ _5"> </span><span class="ff9">撰写并打印课程<span class="ff8 sc0">设计计算说明<span class="_ _0"></span>书<span class="_ _7"></span><span class="ff5 sc1">(<span class="ff9">含工艺规程<span class="_ _7"></span><span class="ff5">)10<span class="_ _8"> </span><span class="ff9">页以上，</span>1.5<span class="_ _8"> </span><span class="ff9">万字以上<span class="_ _7"></span><span class="ff5">(1<span class="_ _8"> </span><span class="ff9">天<span class="_ _7"></span><span class="ff5">)<span class="ff9">；</span></span></span></span></span></span></span></span></span></span></div><div class="t m0 xe h6 y28 ffa fs3 fc0 sc1 ls0 ws0">7.<span class="_"> </span><span class="ff9">课程设计答辩，评定成绩<span class="ff5">( 0.5<span class="_ _6"> </span></span>天<span class="ff5">)</span>。</span></div></div><div class="c x7 y29 w9 h11"><div class="t m0 xe ha y2a ff1 fs3 fc0 sc0 ls0 ws0">主要参考文献<span class="_ _0"></span>：</div><div class="t m0 xe ha y2b ff5 fs3 fc0 sc1 ls0 ws0">(1) <span class="ff6">机械制造技术基础（第<span class="_ _4"> </span></span>2<span class="_ _6"> </span><span class="ff6">版）</span>, <span class="ff6">黄健求主编，机械工业出版社，</span>2017<span class="ff6">；</span></div><div class="t m0 xe ha y2c ff5 fs3 fc0 sc1 ls0 ws0">(2) <span class="_ _0"></span><span class="ff6">机<span class="_ _0"></span>械<span class="_ _0"></span>制<span class="_ _0"></span>造<span class="_ _0"></span>技<span class="_ _0"></span>术<span class="_ _0"></span>基<span class="_ _0"></span>础<span class="_ _0"></span>课<span class="_ _0"></span>程<span class="_ _0"></span>设<span class="_ _0"></span>计<span class="_ _0"></span>指<span class="_ _0"></span>导<span class="_ _0"></span>教<span class="_ _0"></span>程<span class="_ _0"></span>（<span class="_ _0"></span>第<span class="_ _3"> </span></span>2<span class="_"> </span><span class="ff6">版）<span class="_ _9"></span>，<span class="_ _0"></span>邹<span class="_ _0"></span>青<span class="_ _0"></span>主<span class="_ _0"></span>编<span class="_ _0"></span>，<span class="_ _0"></span>机<span class="_ _0"></span>械<span class="_ _0"></span>工<span class="_ _0"></span>业<span class="_ _0"></span>出<span class="_ _0"></span>版</span></div><div class="t m0 xc ha y2d ff6 fs3 fc0 sc1 ls0 ws0">社，<span class="ff5">2011</span>；</div><div class="t m0 xe ha y2e ff5 fs3 fc0 sc1 ls0 ws0"> (5) <span class="ff6">简明机械加工工艺手册，机械工业出版社，</span>2008<span class="ff6">。</span></div></div></div><div class="pi" data-data='{"ctm":[1.611830,0.000000,0.000000,1.611830,0.000000,0.000000]}'></div></div><div id="pf3" class="pf w0 h0" data-page-no="3"><div class="pc pc3 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="/image.php?url=https://csdnimg.cn/release/download_crawler_static/89504639/bg3.jpg"><div class="t m0 x15 ha y2f ff4 fs3 fc0 sc1 ls0 ws0">1<span class="ff1 sc0">、机械零件制<span class="_ _0"></span>造工艺分析与<span class="_ _0"></span>夹具设计</span></div><div class="t m0 x16 ha y30 ff6 fs3 fc0 sc1 ls0 ws0">夹具设计：钻</div><div class="c x17 y31 wa h12"><div class="t m0 xf hc y32 ffb fs3 fc0 sc1 ls0 ws0">?</div></div><div class="c x18 y31 wf h13"><div class="t m0 xf hc y33 ffc fs3 fc1 sc1 ls0 ws0">𝐴</div></div><div class="c x19 y34 wc h14"><div class="t m1 x12 hf y35 ffb fs4 fc0 sc1 ls0 ws0">+</div></div><div class="c x1a y34 wd h14"><div class="t m1 x12 hf y35 ffb fs4 fc0 sc1 ls0 ws0">0.019</div></div><div class="c x19 y36 we h14"><div class="t m1 x12 hf y35 ffb fs4 fc0 sc1 ls0 ws0">0</div></div><div class="t m0 x1b ha y30 ff5 fs3 fc1 sc1 ls0 ws0">(<span class="ff6">具体数值见任务分配书</span>)<span class="ff6 fc0">孔的夹具设计</span></div><div class="t m0 x1c h15 y37 ffd fs5 fc0 sc1 ls0 ws0">表<span class="ffe"> 1 </span>组内任务分配</div><div class="c x7 y38 w10 h16"><div class="t m0 x12 ha y39 ff6 fs3 fc0 sc1 ls0 ws0">组内编号</div></div><div class="c x1d y38 w11 h16"><div class="t m0 x1e ha y39 ff6 fs3 fc0 sc1 ls0 ws0">Φ<span class="ff5">20<span class="_ _6"> </span></span>孔变值<span class="_ _4"> </span><span class="ff5">A</span></div></div><div class="c x1f y38 w12 h16"><div class="t m0 xb ha y39 ff6 fs3 fc0 sc1 ls0 ws0">孔粗糙度变值<span class="_ _4"> </span><span class="ff5">B</span></div></div><div class="c x20 y38 w12 h16"><div class="t m0 x21 ha y39 ff6 fs3 fc0 sc1 ls0 ws0">工序</div></div><div class="c x7 y3a w10 h16"><div class="t m0 x22 ha y39 ff5 fs3 fc0 sc1 ls0 ws0">1<span class="ff6">、</span>2</div></div><div class="c x1d y3a w11 h16"><div class="t m0 x23 h17 y3b ff5 fs3 fc0 sc1 ls0 ws0">19</div></div><div class="c x1f y3a w12 h16"><div class="t m0 x24 h17 y3b ff5 fs3 fc0 sc1 ls0 ws0">6.3</div></div><div class="c x20 y3a w12 h16"><div class="t m0 x21 ha y39 ff5 fs3 fc0 sc1 ls0 ws0">2<span class="ff6">、</span>3</div></div><div class="c x7 y3c w10 h16"><div class="t m0 x22 ha y39 ff5 fs3 fc0 sc1 ls0 ws0">3<span class="ff6">、</span>4</div></div><div class="c x1d y3c w11 h16"><div class="t m0 x23 h17 y3b ff5 fs3 fc0 sc1 ls0 ws0">19</div></div><div class="c x1f y3c w12 h16"><div class="t m0 x24 h17 y3b ff5 fs3 fc0 sc1 ls0 ws0">3.2</div></div><div class="c x20 y3c w12 h16"><div class="t m0 x21 ha y39 ff5 fs3 fc0 sc1 ls0 ws0">3<span class="ff6">、</span>4</div></div><div class="c x7 y3d w10 h16"><div class="t m0 x22 ha y39 ff5 fs3 fc0 sc1 ls0 ws0">5<span class="ff6">、</span>6</div></div><div class="c x1d y3d w11 h16"><div class="t m0 x23 h17 y3b ff5 fs3 fc0 sc1 ls0 ws0">18</div></div><div class="c x1f y3d w12 h16"><div class="t m0 x24 h17 y3b ff5 fs3 fc0 sc1 ls0 ws0">6.3</div></div><div class="c x20 y3d w12 h16"><div class="t m0 x21 ha y39 ff5 fs3 fc0 sc1 ls0 ws0">4<span class="ff6">、</span>5</div></div><div class="c x7 y3e w10 h16"><div class="t m0 x22 ha y39 ff5 fs3 fc0 sc1 ls0 ws0">7<span class="ff6">、</span>8</div></div><div class="c x1d y3e w11 h16"><div class="t m0 x23 h17 y3b ff5 fs3 fc0 sc1 ls0 ws0">18</div></div><div class="c x1f y3e w12 h16"><div class="t m0 x24 h17 y3b ff5 fs3 fc0 sc1 ls0 ws0">3.2</div></div><div class="c x20 y3e w12 h16"><div class="t m0 x21 ha y39 ff5 fs3 fc0 sc1 ls0 ws0">5<span class="ff6">、</span>6</div></div><div class="c x7 y3f w10 h16"><div class="t m0 x25 ha y39 ff5 fs3 fc0 sc1 ls0 ws0">9<span class="ff6">、</span>10</div></div><div class="c x1d y3f w11 h16"><div class="t m0 x23 h17 y3b ff5 fs3 fc0 sc1 ls0 ws0">16</div></div><div class="c x1f y3f w12 h16"><div class="t m0 x24 h17 y3b ff5 fs3 fc0 sc1 ls0 ws0">6.3</div></div><div class="c x20 y3f w12 h16"><div class="t m0 x21 ha y39 ff5 fs3 fc0 sc1 ls0 ws0">6<span class="ff6">、</span>7</div></div><div class="c x7 y40 w10 h16"><div class="t m0 xf ha y39 ff5 fs3 fc0 sc1 ls0 ws0">11<span class="ff6">、</span>12</div></div><div class="c x1d y40 w11 h16"><div class="t m0 x23 h17 y3b ff5 fs3 fc0 sc1 ls0 ws0">16</div></div><div class="c x1f y40 w12 h16"><div class="t m0 x24 h17 y3b ff5 fs3 fc0 sc1 ls0 ws0">3.2</div></div><div class="c x20 y40 w12 h16"><div class="t m0 x21 ha y39 ff5 fs3 fc0 sc1 ls0 ws0">7<span class="ff6">、</span>8</div></div></div><div class="pi" data-data='{"ctm":[1.611830,0.000000,0.000000,1.611830,0.000000,0.000000]}'></div></div><div id="pf4" class="pf w0 h0" data-page-no="4"><div class="pc pc4 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="/image.php?url=https://csdnimg.cn/release/download_crawler_static/89504639/bg4.jpg"><div class="t m0 x18 h18 y41 ff1 fs2 fc0 sc0 ls0 ws0">《机械制<span class="_ _0"></span>造技术基础》<span class="_ _0"></span>课程设计<span class="_ _0"></span>计算说明书</div><div class="t m0 x26 h18 y42 ff1 fs2 fc0 sc0 ls0 ws0">提纲<span class="fff">(</span><span class="fc1 sc2">标<span class="_ _0"></span>红色部分统一<span class="_ _0"></span>提供，非<span class="_ _0"></span>课程设计工<span class="_ _0"></span>作量</span><span class="fff">)</span></div><div class="t m0 x16 h18 y43 ff6 fs2 fc3 sc1 ls0 ws0">目录</div><div class="t m0 x16 ha y44 ff7 fs3 fc1 sc1 ls0 ws0">1.<span class="_ _a"> </span><span class="ff6">零件工艺性分析<span class="_ _6"> </span><span class="ff5">..............................................................................................5</span></span></div><div class="t m0 x16 ha y45 ff5 fs3 fc1 sc1 ls0 ws0">2. <span class="ff6">工艺规程设计<span class="_ _b"></span></span>....................................................................................................6</div><div class="t m0 x27 ha y46 ff5 fs3 fc1 sc1 ls0 ws0">2.1 <span class="ff6">零件工艺性分析、毛坯的制造形式、粗精基准选择、工艺路线<span class="_ _b"></span></span>......6</div><div class="t m0 x27 ha y47 ff5 fs3 fc0 sc1 ls0 ws0">2.2 <span class="ff6">加工余量和工序尺寸的确定<span class="_ _b"></span></span>................................................................10</div><div class="t m0 x27 ha y48 ff5 fs3 fc0 sc1 ls0 ws0">2.3 <span class="ff6">切削刀具和量具的选择<span class="_ _b"></span></span>........................................................................12</div><div class="t m0 x27 ha y49 ff5 fs3 fc0 sc1 ls0 ws0">2.4 <span class="ff6">金属切削机床的选择<span class="_ _b"></span></span>............................................................................12</div><div class="t m0 x27 ha y4a ff5 fs3 fc0 sc1 ls0 ws0">2.5 <span class="ff6">切削用量和时间定额<span class="_ _b"></span></span>............................................................................12</div><div class="t m0 x16 ha y4b ff5 fs3 fc0 sc1 ls0 ws0">3.<span class="ff6">夹具设计<span class="_ _b"></span></span>...........................................................................................................12</div><div class="t m0 x27 ha y4c ff5 fs3 fc0 sc1 ls0 ws0">3.1 <span class="ff6">问题的分析</span>(<span class="ff6">设计任务</span>)<span class="_ _c"> </span>.........................................................................12</div><div class="t m0 x27 ha y4d ff5 fs3 fc0 sc1 ls0 ws0">3.2 <span class="ff6">定位方案设计<span class="_ _b"></span></span>........................................................................................12</div><div class="t m0 x27 ha y4e ff5 fs3 fc0 sc1 ls0 ws0">3.3 <span class="ff6">对刀及导向装置设计<span class="_ _b"></span></span>............................................................................12</div><div class="t m0 x27 ha y4f ff5 fs3 fc0 sc1 ls0 ws0">3.4 <span class="ff6">夹紧装置设计<span class="_ _b"></span></span>........................................................................................12</div><div class="t m0 x27 ha y50 ff5 fs3 fc0 sc1 ls0 ws0">3.5 <span class="ff6">夹具体设计<span class="_ _b"></span></span>............................................................................................12</div><div class="t m0 x27 ha y51 ff5 fs3 fc0 sc1 ls0 ws0">3.6 <span class="ff6">总装配图和零件图设计<span class="_ _b"></span></span>........................................................................13</div><div class="t m0 x27 ha y52 ff5 fs3 fc0 sc1 ls0 ws0">3.7 <span class="ff6">夹具设计及操作简要说明<span class="_ _b"></span></span>....................................................................13</div><div class="t m0 x16 ha y53 ff5 fs3 fc0 sc1 ls0 ws0">4.<span class="ff6">课程设计总结<span class="_ _b"></span></span>...................................................................................................13</div><a class="l"><div class="d m2"></div></a><a class="l"><div class="d m2"></div></a><a class="l"><div class="d m2"></div></a><a class="l"><div class="d m2"></div></a><a class="l"><div class="d m2"></div></a><a class="l"><div class="d m2"></div></a><a class="l"><div class="d m2"></div></a><a class="l"><div class="d m2"></div></a><a class="l"><div class="d m2"></div></a><a class="l"><div class="d m2"></div></a><a class="l"><div class="d m2"></div></a><a class="l"><div class="d m2"></div></a><a class="l"><div class="d m2"></div></a><a class="l"><div class="d m2"></div></a><a class="l"><div class="d m2"></div></a><a class="l"><div class="d m2"></div></a></div><div class="pi" data-data='{"ctm":[1.611830,0.000000,0.000000,1.611830,0.000000,0.000000]}'></div></div><div id="pf5" class="pf w0 h0" data-page-no="5"><div class="pc pc5 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="/image.php?url=https://csdnimg.cn/release/download_crawler_static/89504639/bg5.jpg"><div class="t m0 x28 ha y54 ff7 fs3 fc0 sc1 ls0 ws0"> </div><div class="t m0 x29 h19 y55 fff fs6 fc0 sc0 ls0 ws0">1.<span class="_"> </span><span class="ff3">零件工艺性<span class="_ _0"></span>分析</span></div><div class="t m0 x2a h1a y56 fff fs7 fc0 sc0 ls0 ws0">1)<span class="_ _8"></span><span class="ff1">零件的作用</span></div><div class="t m0 x16 ha y57 ff6 fs3 fc0 sc1 ls0 ws0">该拨<span class="_ _0"></span>叉应<span class="_ _0"></span>用在<span class="fc4">拖<span class="_ _0"></span>拉机<span class="_ _0"></span></span>变速<span class="_ _0"></span>箱的<span class="_ _0"></span>换档<span class="_ _0"></span>机构<span class="_ _0"></span>中。拨<span class="_ _0"></span>叉头<span class="_ _0"></span>以<span class="ff5"> <span class="_ _0"></span></span>孔套<span class="_ _0"></span>在变<span class="_ _0"></span>速叉轴<span class="_ _0"></span>上，</div><div class="t m0 x29 ha y58 ff6 fs3 fc0 sc1 ls0 ws0">并用<span class="_ _0"></span>销钉经<span class="_ _0"></span><span class="ff5"> </span>孔<span class="_ _0"></span>与变<span class="_ _0"></span>速叉轴<span class="_ _0"></span>联结<span class="_ _0"></span>，拨<span class="_ _0"></span>叉脚则<span class="_ _0"></span>夹在<span class="_ _0"></span>双联<span class="_ _0"></span>变换<span class="_ _0"></span>齿轮的<span class="_ _0"></span>槽中<span class="_ _0"></span>。当<span class="_ _0"></span>需要变</div><div class="t m0 x29 ha y59 ff6 fs3 fc0 sc1 ls0 ws0">速时<span class="_ _0"></span>，<span class="_ _0"></span>操<span class="_ _0"></span>纵变<span class="_ _0"></span>速<span class="_ _0"></span>杆<span class="_ _0"></span>，变<span class="_ _0"></span>速<span class="_ _0"></span>操<span class="_ _0"></span>纵机<span class="_ _0"></span>构<span class="_ _0"></span>就<span class="_ _0"></span>通过<span class="_ _0"></span>拨<span class="_ _0"></span>叉头<span class="_ _0"></span>部<span class="_ _0"></span>的<span class="_ _0"></span>操纵<span class="_ _0"></span>槽<span class="_ _0"></span>带<span class="_ _0"></span>动拨<span class="_ _0"></span>叉<span class="_ _0"></span>与<span class="_ _0"></span>变速<span class="_ _0"></span>叉</div><div class="t m0 x29 ha y5a ff6 fs3 fc0 sc1 ls0 ws0">轴一<span class="_ _0"></span>起<span class="_ _0"></span>在<span class="_ _0"></span>变速<span class="_ _0"></span>箱<span class="_ _0"></span>中滑<span class="_ _0"></span>动<span class="_ _0"></span>，<span class="_ _0"></span>拨叉<span class="_ _0"></span>脚<span class="_ _0"></span>拨动<span class="_ _0"></span>双<span class="_ _0"></span>联<span class="_ _0"></span>变换<span class="_ _0"></span>齿<span class="_ _0"></span>轮在<span class="_ _0"></span>花<span class="_ _0"></span>键<span class="_ _0"></span>轴上<span class="_ _0"></span>滑<span class="_ _0"></span>动以<span class="_ _0"></span>改<span class="_ _0"></span>换<span class="_ _0"></span>档位<span class="_ _0"></span>，</div><div class="t m0 x29 ha y5b ff6 fs3 fc0 sc1 ls0 ws0">从而改变<span class="fc4">拖拉机</span>的行驶速度。</div><div class="t m0 x16 ha y5c ff6 fs3 fc0 sc1 ls0 ws0">该拨<span class="_ _0"></span>叉<span class="_ _0"></span>在<span class="_ _0"></span>改<span class="_ _0"></span>换档<span class="_ _0"></span>位<span class="_ _0"></span>时<span class="_ _0"></span>要<span class="_ _0"></span>承受<span class="_ _0"></span>弯<span class="_ _0"></span>曲<span class="_ _0"></span>应力<span class="_ _0"></span>和<span class="_ _0"></span>冲<span class="_ _0"></span>击<span class="_ _0"></span>载荷<span class="_ _0"></span>的<span class="_ _0"></span>作<span class="_ _0"></span>用<span class="_ _0"></span>，因<span class="_ _0"></span>此<span class="_ _0"></span>该<span class="_ _0"></span>零件<span class="_ _0"></span>应<span class="_ _0"></span>具</div><div class="t m0 x29 ha y5d ff6 fs3 fc0 sc1 ls0 ws0">有足<span class="_ _0"></span>够<span class="_ _0"></span>的<span class="_ _0"></span>强度<span class="_ _0"></span>、<span class="_ _0"></span>刚<span class="_ _0"></span>度和<span class="_ _0"></span>韧<span class="_ _0"></span>性<span class="_ _0"></span>，以<span class="_ _0"></span>适<span class="_ _0"></span>应<span class="_ _0"></span>拨叉<span class="_ _0"></span>的<span class="_ _0"></span>工作<span class="_ _0"></span>条<span class="_ _0"></span>件<span class="_ _0"></span>。该<span class="_ _0"></span>零<span class="_ _0"></span>件<span class="_ _0"></span>的<span class="fc4">主<span class="_ _0"></span>要<span class="_ _0"></span>工<span class="_ _0"></span>作表<span class="_ _0"></span>面</span></div><div class="t m0 x29 ha y5e ff6 fs3 fc4 sc1 ls0 ws0">为拨叉脚<span class="_ _0"></span>两端面、叉<span class="_ _0"></span>轴孔Ф<span class="ff5">20+0.021 0mm(H7)<span class="_ _0"></span></span>和锁钉孔Ф<span class="_ _0"></span><span class="ff5">6+0.012 0mm(H7)</span><span class="fc0">，在</span></div><div class="t m0 x29 ha y5f ff6 fs3 fc0 sc1 ls0 ws0">设计工艺规程时应重点予以保证。</div><div class="t m0 x2b h1b y60 ff6 fs8 fc4 sc1 ls0 ws0">图<span class="_ _6"> </span><span class="ff5">1. </span>拨叉零件工作原理三维图</div><div class="t m0 x2a h1a y61 fff fs7 fc0 sc0 ls0 ws0">2)<span class="_ _8"></span><span class="ff1">拨叉的技术要<span class="_ _0"></span>求</span></div><div class="t m0 x16 ha y62 ff6 fs3 fc0 sc1 ls0 ws0">该拨<span class="_ _0"></span>叉<span class="_ _0"></span>形<span class="_ _0"></span>状<span class="_ _0"></span>特殊<span class="_ _0"></span>、<span class="_ _0"></span>结<span class="_ _0"></span>构<span class="_ _0"></span>简单<span class="_ _0"></span>，<span class="_ _0"></span>属<span class="_ _0"></span>典型<span class="_ _0"></span>的<span class="_ _0"></span>叉<span class="_ _0"></span>杆<span class="_ _0"></span>类零<span class="_ _0"></span>件<span class="_ _0"></span>。<span class="_ _0"></span>为<span class="_ _0"></span>实现<span class="_ _0"></span>换<span class="_ _0"></span>档<span class="_ _0"></span>、变<span class="_ _0"></span>速<span class="_ _0"></span>的</div><div class="t m0 x29 ha y63 ff6 fs3 fc0 sc1 ls0 ws0">功能<span class="_ _0"></span>，<span class="_ _0"></span>其<span class="_ _0"></span>叉轴<span class="_ _0"></span>孔<span class="_ _0"></span>与<span class="_ _0"></span>变速<span class="_ _0"></span>叉<span class="_ _0"></span>轴<span class="_ _0"></span>有配<span class="_ _0"></span>合<span class="_ _0"></span>要<span class="_ _0"></span>求，<span class="_ _0"></span>因<span class="_ _0"></span>此加<span class="_ _0"></span>工<span class="_ _0"></span>精<span class="_ _0"></span>度要<span class="_ _0"></span>求<span class="_ _0"></span>较<span class="_ _0"></span>高。<span class="_ _0"></span>叉<span class="_ _0"></span>脚<span class="_ _0"></span>两端<span class="_ _0"></span>面</div><div class="t m0 x29 ha y64 ff6 fs3 fc0 sc1 ls0 ws0">在工<span class="_ _0"></span>作<span class="_ _0"></span>中<span class="_ _0"></span>需承<span class="_ _0"></span>受<span class="_ _0"></span>冲<span class="_ _0"></span>击载<span class="_ _0"></span>荷<span class="_ _0"></span>，<span class="_ _0"></span>为增<span class="_ _0"></span>强<span class="_ _0"></span>其<span class="_ _0"></span>耐磨<span class="_ _0"></span>性<span class="_ _0"></span>，该<span class="_ _0"></span>表<span class="_ _0"></span>面<span class="_ _0"></span>要求<span class="_ _0"></span>高<span class="_ _0"></span>频<span class="_ _0"></span>淬火<span class="_ _0"></span>处<span class="_ _0"></span>理<span class="_ _0"></span>，硬<span class="_ _0"></span>度</div><div class="t m0 x29 ha y65 ff6 fs3 fc0 sc1 ls0 ws0">为<span class="_ _1"> </span><span class="ff5">48~58HRC<span class="_ _d"></span></span>；<span class="_ _d"></span>为<span class="_ _d"></span>保<span class="_ _b"></span>证<span class="_ _d"></span>拨<span class="_ _d"></span>叉<span class="_ _d"></span>换<span class="_ _b"></span>档<span class="_ _d"></span>时<span class="_ _d"></span>叉<span class="_ _d"></span>脚<span class="_ _b"></span>受<span class="_ _d"></span>力<span class="_ _d"></span>均<span class="_ _d"></span>匀<span class="_ _b"></span>，<span class="_ _d"></span><span class="fc4">要<span class="_ _d"></span>求<span class="_ _d"></span>叉<span class="_ _b"></span>脚<span class="_ _d"></span>两<span class="_ _d"></span>端<span class="_ _d"></span>面<span class="_ _b"></span>对<span class="_ _d"></span>叉<span class="_ _d"></span>轴<span class="_ _d"></span>孔<span class="_ _b"></span><span class="ff5"> </span></span></div><div class="t m0 x29 ha y66 ff6 fs3 fc4 sc1 ls0 ws0">Ф<span class="ff5">20+0.021 <span class="_ _0"></span>0mm<span class="_ _0"></span></span>。为<span class="_ _0"></span>保<span class="_ _0"></span>证拨<span class="_ _0"></span>叉<span class="_ _0"></span>在叉<span class="_ _0"></span>轴<span class="_ _0"></span>上<span class="_ _0"></span>有准<span class="_ _0"></span>确<span class="_ _0"></span>的位<span class="_ _0"></span>置<span class="_ _0"></span>，改<span class="_ _0"></span>换<span class="_ _0"></span>档位<span class="_ _0"></span>准<span class="_ _0"></span>确，<span class="_ _0"></span>拨<span class="_ _0"></span>叉采</div></div><div class="pi" data-data='{"ctm":[1.611830,0.000000,0.000000,1.611830,0.000000,0.000000]}'></div></div>