阜新市数控车床技能大赛试题

1数控车床技能大赛试题用数控车床完成图所示零件的加工，此零件为配合件，件1与件2相配，配合锥面用涂色法检查，要求锥体接触面积不小于50%，零件材料为45钢。2车床评分标准准考证号操作时间240min得分试题编号2系统类型序号考核项目考核内容及要求评分标准配分检测结果扣分得分备注1工件1M27×1.5-6g超差不得分62R6超差不得分35倒角(2处)错、漏1处扣1分2697±0.05每超差0.01扣1分27Ø46-0.025IT每超差0.01扣1分38Ra3.2每降1级扣1分29Ø24+0.033IT每超差0.01扣1分310Ra1.6每降1级扣1分2Ø20-0.033IT每超差0.01扣1分3Ra1.6每降1级扣1分211Ø36±0.012IT每超差0.01扣1分312Ra1.6每降1级扣1分2Ø29.6超差不得分25超差不得分4Ø23超差不得分220超差不得分222.5超差不得分215超差不得分223超差不得分264.5超差不得分3锥度1:5超差不得分413工件2Ø46+0.025IT每超差0.01扣1分314Ra1.6每降1级扣1分2Ø29.6超差不得分215M27×1.5-6H超差不得分616锥度1:5超差不得分41723每超差0.01扣1分21897±0.1每超差0.01扣1分320R6超差不得分321倒角错、漏不得分122配合螺纹配合超差不得分4锥度配合超差不得分4安全文明生产1.遵守机床安全操作范围2.刀具,工具,量具放置规范3.设备保养、场地整洁酌情扣1～5分33工艺合理1.工件定位,夹紧及刀具选择合理2.加工顺序及刀具轨迹路线合理酌情扣1～5分3程序编制1.指令正确,程序完整2.数值计算正确,程序编写表现出一定的技巧,简化计算和加工程序3.刀具补偿功能运用正确,合理4.切削参数,坐标系选择正确.酌情扣1～5分4其他项目发生重大事故(人身和设备安全事故等),严重违反工艺原则和情节严重的野蛮操作等,由裁判长决定取消其实操竞赛资格记录员监考人检验员考评人各工序刀具的切削参数序号加工面刀具号刀具类型主轴转速n/r.min-1进给速度vf/mm.r-1件11粗车小端外形T1930菱形外圆车刀8000.32精车外形T210000.13切退刀槽T3b=5切槽刀2000.14车外螺纹T460º外螺纹车刀3001.55调头装夹钻孔Ø20麻花钻500手动粗车大端外形T1930菱形外圆车刀8000.36精车大端外形T210000.17粗镗内孔T5内孔镗刀6000.38精镗内孔10000.1件29钻孔Ø20麻花钻500手动10粗车外形T1930菱形外圆车刀8000.311精车外形T210000.112粗镗内孔T5内孔镗刀6000.313精镗内孔10000.114车内螺纹T660º内螺纹车刀2001.54参考程序：O1001;（件1程序—车小头）N0010G97G99G40S800M03T0101;N0020G00X80.0Z50.0;N0030G00X51.0Z2.0;N0040G71U3.0R0.8;N0050G71P60Q180U0.4W0.2F0.3;N0060G01X0F0.1;N0070Z0;N0080G03X20.0Z-10.0R10.0;N0090G01Z-26.5;N0100X24.0;N0110X27.0Z-28.0;N0120Z-49.5;N0130X32.0;N0140G03X36.0Z-51.5R2.0;N0150G01Z-64.5;N0160X43.0;N0170X46.0Z-66.0;N0180Z-77.0;N0190G00X80.0Z50.0;N0200G97G99G40S1000M03T0202;N0210G00X51.0Z2.0;N0220G70P60Q180;N0230G00X80.0Z50.0;N0240G97G99G40S200M03T0303;N0250G00X38.0Z-49.5;N0260G01X23.0F0.1;N0270G04X4.0;N0280G01X38.0;N0290G00X80.0Z50.0;N0300G97G99G40S300M03T0404;N0310G00X29.0Z-24.5;N0320G92X26.2Z-46.5F1.5;N0330G92X25.6Z-46.5F1.5;N0340G92X25.2Z-46.5F1.5;N0350G92X25.04Z-46.5F1.5;N0360G00X80.0Z50.0;N0370M30;5O1002;（件1程序—车大头）N0010G97G99G40S600M03T0101;N0020G00X51.0Z32.5;N0030G01X0F0.2;N0040Z34.5.0;N0050G00X51.0;N0060G71U3.0R0.8N0070G71P80Q110U0.4W0.1F0.3;N0080G01G42X28.9F0.1;N0090X36.827Z14.681;N0100G02X46.0Z10.0R6.0;N0110G01X51.0;N0120G00X80.0Z120.0;N0130G97G99G40S1000M03T0202;N0140G00X51.0Z34.5;N0150G70P80Q110;N0160G00X80.0Z120.0;N0170G97G99G40S600M03T0505;N0180G00X18.0Z34.5;N0190G90X23.0Z12.5F0.3;N0200S1000M03;N0210G01X27.0F0.1;N0215Z32.5;N0220X24.016Z31.0;N0230Z12.5;N0240X18.0;N0250G00Z120.0;N0260X80.0;N0270M30;6O0003;（件2程序）N0010G97G99G40S600M03T0101;N0020G00X80.0Z50.0;N0030G00X51.0Z2.0;N0040G71U3.0R0.6;N0050G71P60Q70U0.4W0.2F03;N0060G01X46.0F0.1;N0070Z-55.0;N0080G00X80.0Z120.0;N0090G97G99G40S1000M03T0202;N0100G00X51.0Z2.0;N0110G70P60Q70;N0120G00X80.0Z120.0;N0130G97G99G40S1000M03T0505;N0140G00X23.0Z2.0N0150G71U3.0R0.6;N0160G71P170Q220U0.4W0.2F0.3;N0170G01G41X46.0F0.1;N0180Z0;N0190G02X36.932Z-4.67R6.0;N0200G01X29.6Z-23.0;N0210X26.0Z-24.5;N0220Z-55.0;N0230S1000M03;N0240G70P170Q220;N0250G97G99G40S200M03T0606;N0260G00X24.0Z10.0;N0270Z-21.0;N0280G92X26.3Z-48.0F1.5;N0290G92X26.9Z-48.0F1.5;N0290G92X27.3Z-48.0F1.5;N0290G92X27.47Z-48.0F1.5;N0300G00Z120.0;N0310X80.0;N0320G97G99G40S200M03T0404;N0330G00X47.0Z-46.0;N0340G01X24.0F0.1;N0350G00X80.0Z120.0N0360M30;7“创业杯”数控车床技能大赛试题2用数控车床完成图所示零件的加工，毛坯为Φ70×125㎜的棒料。8车床评分标准准考证号操作时间300min得分试题编号2系统类型序号考核项目考核内容及要求评分标准配分检测结果扣分得分备注1直径Ø65-0.019超差不得分62Ø45-0.017超差不得分63Ø35-0.027-0.01超差不得分64Ø58超差不得分25Ø51超差不得分26Ø32超差不得分27Ø25超差不得分28Ø15超差不得分29长度120±0.1超差不得分41025超差不得分41175超差不得分41255±0.05超差不得分41330(两处)1处超差扣2分4145(外槽宽)超差不得分2158(内槽宽)超差不得分216半径R8±0.05超差不得分517螺纹M30×2-6g(两处)1处超差扣7分1418倒角1(2)×450(六处)1处超差扣1分619表面Ra0.8(3处)1处超差扣2分620Ra1.6(3处)1处超差扣1分321Ra3.21处超差扣1分322安全文明生产1.遵守机床安全操作范围2.刀具,工具,量具放置规范3.设备保养、场地整洁酌情扣1～5分323工艺合理1.工件定位,夹紧及刀具选择合理2.加工顺序及刀具轨迹路线合理酌情扣1～5分324程序编制1.指令正确,程序完整2.数值计算正确,程序编写表面出一定的技巧,简化计算和加工程序3.刀具补偿功能运用正确,合理4.切削参数,坐标系选择正确,合理酌情扣1～5分5其他项目发生重大事故(人身和设备安全事故等),严重违反工艺原则和情节严重的野蛮操作等,由裁判长决定取消其实操竞赛资格记录员监考人检验员考评人9各工序刀具的切削参数数控加工工序(工步)卡零件图号零件名称材料使用设备轴45钢工步号工步内容刀具号刀具名称刀具规格主轴转速(rpm)进给速度(mm/r)刀具半径补偿号刀具长度补偿号备注1(车大端)手动进给钻Ø15孔钻头Ø15mm2车内螺纹底孔至Ø27.4T0101内孔车刀5000.23车内退刀槽T0202内槽切刀刀宽8mm5000.14粗车Ø65、Ø45外圆及端面、倒角T0303外圆粗车刀930右偏刀6000.255精车Ø65、Ø45外圆及端面T0404外圆精车刀930右偏刀8000.16车内螺纹M30×2T0505内螺纹车刀600螺纹刀40078(调头、车小端)9粗车Ø34、R8圆弧、圆锥面T0303外圆粗车刀930右偏刀5000.2510螺纹外圆面、端面、倒角等11精车Ø34、R8圆弧、圆锥面、螺纹T0404外圆精车刀930右偏刀8000.112外圆面、端面13车外螺纹退刀槽5×Ø25T0101外槽切刀刀宽5mm4000.114车M30×2螺纹T0202外螺纹切刀600螺纹刀400151617参考程序（说明：工件15内孔用手动钻削。）车削大端程序：O0016N1G97G99G21G40;N2M03S600T0101;(内孔车刀)N3G00X10.0Z5.0M08;N4G90X21.0Z-38.0F0.2;N5X25.0;N6X26.5;N7X27.4;N8G00X80.0Z100.0T0202;（内槽切刀）10N9X24.0Z5.0;N10Z-38.0;N11G01X32.0F0.1;N12G04X1.0;N13G00X24.0;N14Z100.0;N15X80.0T0303;（外园粗车刀）N16G00X76.0Z5.0;N17G71U2.0R0.5;N18G71P19Q25U1.0W0.5F0.25;N19G00X33.0M03S800;N20G01X45.0Z-1.0F0.1;N21Z-25.0;N22X63.0;N23X65.0Z-26.0;N24Z-50.0;N25X75.0;N26G00X80.0Z100.0T0404;（外园精车刀）N27X76.0Z5.0;N28G70P19Q25;N30G00X80.0Z100.0T0505;（内螺纹车刀）N31M03S400;N32G00X20.0Z5.0;N33G92X27.8Z-33.0F2.0;N34X28.3;N35X28.8;N36X29.3;N37X29.7;N38X29.9;N39X30.0;N40G00X80.0Z100.0M09;N41M05;N42M30;车削小端程序：O0018N1G97G99G21G40;N2M03S500T0303;(外园粗车刀)N3G00X76.0Z5.0M08;N4G71U2.0R0.5;N5G71P