[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fASx7EzYDQVzZRQjH42Rq6PAD734skhHBdFgaEQMS4SM":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":11,"question":15,"related":16,"source":25,"type":26},[],"2026-04-06 09:13:04",335094772,[8,9,10],"稳定性好","精度高","故障率低",{"courseId":12,"courseImg":13,"courseName":14},"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","闭环控制系统比开环及半闭环系统( )",[17,27,36,45,54,63,72,81,90,93],{"answer":18,"createTime":5,"id":19,"options":20,"question":24,"source":25,"type":26},[],335094764,[21,22,23],"轴向夹持","径向夹持","法兰盘式夹持","目前在数控机床的自动换刀装置中,机械手夹持刀具的方法应用最多的是( )","v1",0,{"answer":28,"createTime":5,"id":29,"options":30,"question":35,"source":25,"type":26},[],335094765,[31,32,33,34],"直线位移","角位移或直线位移","角位移","直线位移和角位移","数控机床检测反馈装置的作用是将其准确测得的( )数据迅速反馈给数控装置,以便于与加工程序给定的指令值进行比较和处理",{"answer":37,"createTime":5,"id":38,"options":39,"question":44,"source":25,"type":26},[],335094766,[40,41,42,43],"电脉冲的总数","电流的大小","电脉冲的频率","电压的高低","步进电动机的转速主要取决于( )",{"answer":46,"createTime":5,"id":47,"options":48,"question":53,"source":25,"type":26},[],335094767,[49,50,51,52],"尽可能增加传动元件, 延长传动链","提高各传动元件的制造、安装精度,特别是末端元件","尽可能使用越靠近末端的传动副, 速度应越大,即采用升速传动","以上三者都是","提高机床传动链传动精度的措施有 ( )",{"answer":55,"createTime":5,"id":56,"options":57,"question":62,"source":25,"type":26},[],335094768,[58,59,60,61],"靠摩擦力传递扭矩","自锁","定位和便于装卸刀柄","无正确答案","数控机床主轴锥孔的锥 度通常为 7 : 24 ,之所以采用这种锥度是为了 ( )",{"answer":64,"createTime":5,"id":65,"options":66,"question":71,"source":25,"type":26},[],335094769,[67,68,69,70],"电机轴上","移动工作台上","传动丝杠轴上","传动齿轮上","闭环控制直线工作台进给系统中,应将传感器装在( )",{"answer":73,"createTime":5,"id":74,"options":75,"question":80,"source":25,"type":26},[],335094770,[76,77,78,79],"选用合适的过滤器,清除压缩空气中的杂质和水分","检查系统中油雾器的供油量,保证空气中有适量的润滑油来润滑气动元件, 防止生锈、磨损造成空气泄漏和元件动作失灵","保持气动系统的密封性,定期检查更换密封件","注意调节工作压力,工作压力一般为 0.8Mpa","对数控机床气动系统的维护与保养说法不正确的是( )",{"answer":82,"createTime":5,"id":83,"options":84,"question":89,"source":25,"type":26},[],335094771,[85,86,87,88],"主轴驱动和进给驱动系统","数控装置和驱动装置","数控装置和主轴驱动装置","数控装置和辅助装置","通常所说的数控系统是指( )",{"answer":91,"createTime":5,"id":6,"options":92,"question":15,"source":25,"type":26},[],[8,9,10],{"answer":94,"createTime":5,"id":95,"options":96,"question":101,"source":25,"type":26},[],335094773,[97,98,99,100],"1958.0","1952.0","1978.0","1950.0","年为解决飞机发动机叶片的仿形加工问题,美国帕森斯公司(Parsons,Co.)与麻省理工学院伺服机构实验室合作研制成功电子管控制的第一台三坐标联动的铣床"]