[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fyERQrtgqW9u4vbz0zIKa9pCrNrGsPtsjBUukC15cq3U":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":11,"question":18,"related":19,"source":28,"type":29},[],"2023-06-12 01:15:37",58875495,[8,9,10],"底面和孔定位,限制了工件5个自由度","底面和孔定位,限制了工件6个自由度","外圆面和孔定位,限制了工件5个自由度",{"count":12,"courseId":13,"courseImg":14,"courseName":15,"workId":16,"workName":17},18,"256c3ba9da38615dedd14a44be8c7ed5","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F67f9fd1984c0fe61d4fe4bfe81a47087.jpg","工业工程生产实习","work_28140552","机械加工工艺设计基础知识作业","下图为动力转向器壳体某道工序的工序图,仔细分析上面的定位符号,问:该工序用哪些表面定位,限制了工件几个自由度?\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb85080ad9a7a9b2e7a79b2f49afa2e53.png\">",[20,30,38,47,50,59,67,76,83,92],{"answer":21,"createTime":5,"id":22,"options":23,"question":27,"source":28,"type":29},[],58875492,[24,25,26],"粗车、半精车、精车","粗车、半精车、研磨","粗车、半精车、粗磨、精磨","某轴尺寸为Φ74±0.013,该轴表面粗糙度为Ra0.8um,查下表1和图1,下面哪条加工路线加工该轴较好?\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F4af1d84e279a214d6a4e215e7edec28a.png\">\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F65aa002b5c2230703661f80dd3788035.png\">","v1",0,{"answer":31,"createTime":5,"id":32,"options":33,"question":37,"source":28,"type":29},[],58875493,[34,35,36],"选择平板工件大平面,孔O,底面A做为定位基准","选择平板工件大平面,孔O1,孔O2做为定位基准","选择平板工件大平面,底面A做为定位基准","如下图板型工件,最后工序为在其上钻O1,O2孔,要求O1,O2与A面平行.试设计保证设计尺寸a和b的定位方案.\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F289645c05042a9c9efa5e841abfdfb91.png\">",{"answer":39,"createTime":5,"id":40,"options":41,"question":46,"source":28,"type":29},[],58875494,[42,43,44,45],"1个","2个","3个","4个","某冲压件如图所示,问需要几个单工序模才能加工出这种冲压件?\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fdab7412c6c1fbb4ac77d630bb67fecf2.png\">",{"answer":48,"createTime":5,"id":6,"options":49,"question":18,"source":28,"type":29},[],[8,9,10],{"answer":51,"createTime":5,"id":52,"options":53,"question":58,"source":28,"type":29},[],58875496,[54,55,56,57],"单工序落料模","单工序冲孔模","多工序级进模","多工序复合模","下图为某企业一个冲压模具,该模具是:\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F1c81c56c7493dd615f100fdbe14bf439.png\">",{"answer":60,"createTime":5,"id":61,"options":62,"question":66,"source":28,"type":29},[],58875497,[63,64,65],"对放置在上面的工件进行定位,起到定位作用","对放置在上面的工件进行支撑,起到支撑作用","把弯曲成型后的零件,顶出凹模","下图为有压料装置V形件弯曲模,其结构图中顶杆1的主要作用是:\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd34b861669bfa1d9815a8611023075d9.png\">",{"answer":68,"createTime":5,"id":69,"options":70,"question":75,"source":28,"type":29},[],58875498,[71,72,73,74],"先选择f,再选择v,最后选择ap","先选择ap,再选择f,最后选择v","先选择v,再选择f,最后选择ap","先选择ap,再选择v,最后选择f","切削用量三要素的选定顺序是",{"answer":77,"createTime":5,"id":78,"options":79,"question":82,"source":28,"type":29},[],58875499,[55,54,80,81],"冲孔、落料级进模","冲孔、落料复合模","下图模具是:\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F7d60038f7416a5562e2aab8bbcb463c4.png\">",{"answer":84,"createTime":5,"id":85,"options":86,"question":91,"source":28,"type":29},[],58875500,[87,88,89,90],"IT5","IT6","IT7","IT8","某轴尺寸为Φ74±0.013,查下表1,该轴尺寸是几级精度?\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff8553ef8dc5de2895e74966cb812fcc0.png\">",{"answer":93,"createTime":5,"id":94,"options":95,"question":96,"source":28,"type":29},[],58875501,[55,54,80,81],"下图模具是:\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fed41140f924ad359e438993a35ae8ee9.png\">"]