[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f3qvLSUcbSWSt4wr2QnOmWM772_VT_VONz9FSlj2QqAo":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":27,"type":28},[],"2023-11-18 05:28:51",106452667,[8,9,10,11],"located","clamped","located and clamped","none of them",{"courseId":13,"courseImg":14,"courseName":15},"4dbcf52f8583d2e3f4268065d826cd43","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F25b30343053994e8940089572d36015b.jpg","机械类专业英语","To ensure that the workpiece is produced according to the specified shape, dimensions and tolerances, it is essential that the workpiece should be appropriately on the machine tool",[18,29,38,41,48,55,62,71,79,84],{"answer":19,"createTime":5,"id":20,"options":21,"question":26,"source":27,"type":28},[],106452665,[22,23,24,25],"degrees of freedom; translation; rotation","degrees of freedom; rotation; translation","degrees of rotation; rotation; translation","degrees of translation; rotation; translation","A body that is completely free in space has twelve . It can rotate about or have linear movement along each of the three mutually perpendicular axes XX, YY or ZZ, so it has six freedoms of and six freedoms of","v1",0,{"answer":30,"createTime":5,"id":31,"options":32,"question":37,"source":27,"type":28},[],106452666,[33,34,35,36],"six-point locating principle","redundant constraint","insufficient location","incomplete location","This can be done by six locations in the case of the body, which is known as",{"answer":39,"createTime":5,"id":6,"options":40,"question":16,"source":27,"type":28},[],[8,9,10,11],{"answer":42,"createTime":5,"id":43,"options":44,"question":47,"source":27,"type":28},[],106452669,[45,46],"fixture","jig","A is a production tool that locates, holds and supports the workpiece securely so that each part is machined within the specified limits",{"answer":49,"createTime":5,"id":50,"options":51,"question":54,"source":27,"type":28},[],106452671,[52,53],"Fixtures","Jigs","are rarely clamped on the machine table because it is necessary to move the jig on the table to align the various bushing in the jig with the machine spindle",{"answer":56,"createTime":5,"id":57,"options":58,"question":61,"source":27,"type":28},[],106452673,[59,60,36,35],"complete location","redundant constraints","If more than six points are used, the additional points will be surplus and unnecessary and would therefore be",{"answer":63,"createTime":5,"id":64,"options":65,"question":70,"source":27,"type":28},[],106452674,[66,67,68,69],"定位元件、 夹紧装置、 导向和对刀装置、 夹具体、 连接元件、","定位元件、 夹紧装置、 导向和对刀装置、 夹具体、 其他元件及装置、","定位元件、 夹紧装置、 导向和对刀装置、 夹具体、 连接元件、 其他元件及装置、","夹紧装置、 导向和对刀装置、 夹具体、 连接元件、 其他元件及装置、","Select the right translation. Locator; Clamping Device; Guiding and Tool-setting Elements; Fixture Body; Other Components or Device",{"answer":72,"createTime":5,"id":73,"options":74,"question":77,"source":27,"type":78},[],106452676,[75,76],"正确","错误","Fixtures are generally used in machining (milling, planing, shaping and turning, etc. ) and other manufacturing operations, such as welding, heat treatment, machining inspection and assembly, etc",3,{"answer":80,"createTime":5,"id":81,"options":82,"question":83,"source":27,"type":78},[],106452678,[75,76],"The process of location induces a locking effect which, through frictional or some other forms of mechanism, provides a stability of location which cannot be changed until and unless external loading is able to overcome the locking effect",{"answer":85,"createTime":5,"id":86,"options":87,"question":92,"source":27,"type":93},[],106452679,[88,89,90,91],"Productivity","Interchangeability","Skill reduction","Cost reduction","Select the advantages of jigs and fixtures",1]