[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fF0jMC2YPgnqmn5Agbh-MyxzF6pcMtB7C5eHyFD4CQ-o":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":10,"question":14,"related":15,"source":25,"type":26},[],"2023-11-18 05:28:51",106452671,[8,9],"Fixtures","Jigs",{"courseId":11,"courseImg":12,"courseName":13},"4dbcf52f8583d2e3f4268065d826cd43","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F25b30343053994e8940089572d36015b.jpg","机械类专业英语","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",[16,27,36,45,52,55,62,71,79,84],{"answer":17,"createTime":5,"id":18,"options":19,"question":24,"source":25,"type":26},[],106452665,[20,21,22,23],"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":28,"createTime":5,"id":29,"options":30,"question":35,"source":25,"type":26},[],106452666,[31,32,33,34],"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":37,"createTime":5,"id":38,"options":39,"question":44,"source":25,"type":26},[],106452667,[40,41,42,43],"located","clamped","located and clamped","none of them","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",{"answer":46,"createTime":5,"id":47,"options":48,"question":51,"source":25,"type":26},[],106452669,[49,50],"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":53,"createTime":5,"id":6,"options":54,"question":14,"source":25,"type":26},[],[8,9],{"answer":56,"createTime":5,"id":57,"options":58,"question":61,"source":25,"type":26},[],106452673,[59,60,34,33],"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":25,"type":26},[],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":25,"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":25,"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":25,"type":93},[],106452679,[88,89,90,91],"Productivity","Interchangeability","Skill reduction","Cost reduction","Select the advantages of jigs and fixtures",1]