[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fTPhY0bamZ8N-3Mo3TZiZMFlFJVgOhnz8BBq9yYmtWnQ":3},{"id":4,"source":5,"question":6,"options":7,"answer":12,"related":13,"type":24,"origin":114,"createTime":37},144240177,"v1","在铣床上进行曲线､ 圆弧等切削及复杂曲面切削时, 需要 ( )｡",[8,9,10,11],"圆弧控制","点位控制","轮廓控制","直线控制",[],[14,27,38,49,59,69,79,89,93,103],{"id":15,"source":5,"question":16,"options":17,"answer":22,"related":23,"type":24,"origin":25,"createTime":26},144240162,"数控机床使用的刀具必须具有较高的硬度和耐用度, 铣削刀具中最能体现这两种特性的刀具材料是 ( )｡",[18,19,20,21],"高速钢","陶瓷刀片","硬质合金","工具钢",[],[],0,null,"2024-05-28T14:43:42+08:00",{"id":28,"source":5,"question":29,"options":30,"answer":35,"related":36,"type":24,"origin":25,"createTime":37},144240165,"造成球面工作表面粗糙度达不到要求的原因之一是 ( )｡",[31,32,33,34],"对刀不准","工件与夹具不同轴","未加切削液","铣削进给量过大",[],[],"2024-06-02T16:01:28+08:00",{"id":39,"source":5,"question":40,"options":41,"answer":46,"related":47,"type":24,"origin":25,"createTime":48},144240167,"从通用PC机向CNC传入加工程序是通过( )接口｡",[42,43,44,45],"输入输出","光电隔离","RS232","总线",[],[],"2024-06-02T16:01:27+08:00",{"id":50,"source":5,"question":51,"options":52,"answer":57,"related":58,"type":24,"origin":25,"createTime":48},144240169,"数控编程时采用刀具半径补偿(G41､G42､G40)指令编程时, 可按 ( ) 编程｡",[53,54,55,56],"刀具中心轨迹","工件轮廓","位移控制","工件中心",[],[],{"id":60,"source":5,"question":61,"options":62,"answer":67,"related":68,"type":24,"origin":25,"createTime":37},144240171,"球头铣刀的球半径通常 ( ) 加工曲面的曲率半径｡",[63,64,65,66],"大于","A､B､C 都可以","小于","等于",[],[],{"id":70,"source":5,"question":71,"options":72,"answer":77,"related":78,"type":24,"origin":25,"createTime":26},144240173,"对于操作者来说,降低工件表面粗糙度值最容易采取的办法是( )｡",[73,74,75,76],"调整切削用量","改变加工路线","提高机床精度","调换夹具",[],[],{"id":80,"source":5,"question":81,"options":82,"answer":87,"related":88,"type":24,"origin":25,"createTime":37},144240175,"辅助功能中表示程序计划停止的指令是 ｡",[83,84,85,86],"M02","M01","M30","M00",[],[],{"id":4,"source":5,"question":6,"options":90,"answer":91,"related":92,"type":24,"origin":25,"createTime":37},[8,9,10,11],[],[],{"id":94,"source":5,"question":95,"options":96,"answer":101,"related":102,"type":24,"origin":25,"createTime":37},144240179,"通常用球刀加工比较平滑的曲面时, 表面粗糙度质量不高｡ 这是由于 ( ) 造成的｡",[97,98,99,100],"行 距 不 够 密","步 距 太 小","球刀尖部的切削速度几乎为零","球刀刀刃不太锋利",[],[],{"id":104,"source":5,"question":105,"options":106,"answer":111,"related":112,"type":24,"origin":25,"createTime":113},144240181,"采用球头刀铣削加工曲面, 减小残留高度的办法是 ( )｡",[107,108,109,110],"加大球头刀半径和减小行距","减小球头刀半径和加大行距","减小球头刀半径和减小行距","加大球头刀半径和加大行距",[],[],"2024-05-19T17:08:34+08:00",{"courseName":115,"courseImg":116,"workName":117,"workId":118,"count":119,"courseId":120},"数控加工技术","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9c1e48361b00f3ee2086f4e259ed792b.jpg","4-7章练习题.xls","work_35129775",112,"f653a5d82c5ceeac84b5908705615dd5"]