NETDMIS5.0构造功能中可以构造一般特征,包括:点、圆、圆槽、平面、球、方槽、直线、圆柱、圆锥等特征,程序编写人员可以通过它来构造自己定义的或是作为理想基准但是无法测量的特征。
如图所示,变速箱齿轮,需要测量在指定高度(70mm)上每个齿轮与基准圆直径(102mm)相交的点的位置,此种情况下需要用构造一般特征来将基准圆构造出来
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98$$ NET_DMIS_20160720 $$ MADE IN DE 2023-2-10 14:10:20 INCLUD/DMIS,'NET_DMIS_DEFINES.DMI' INCLUD/DMIS,'VARDEFINE' DMESW/COMAND,'PROBE_VAL/INIT' UNITS/MM,ANGDEC D(MACHINE)=DATSET/MCS DMESW/COMAND,'COORDSYS/ALIGN' WKPLAN/XYPLAN PRCOMP/ON PRCOMP/ON FEDRAT/POSVEL,MMPS,300.0000 ACLRAT/POSACL,MMPSS,100.0000 FEDRAT/MESVEL,MMPS,20.0000 ACLRAT/MESACL,MMPSS,100.0000 SNSET/RETRCT,2.0000 SNSET/SEARCH,5.0000 SNSET/APPRCH,2.0000 DMESW/COMAND,'SNSET/MANRETRCT,2.0000' DMESW/COMAND,'REPORT/CLEAR' MODE/MAN DID(D2L40)=DEVICE/STOR,'D2L40' OPEN/DID(D2L40),SNS S(A0B0)=SNSDEF/PROBE,INDEX,POL,0.0,0.0,0.0000,0.0000,1.0000,189.6500,2.0000 SNSLCT/SA(A0B0) GEOALG/PLANE,LSTSQR F(平面1)=FEAT/PLANE,CART,22.5266,23.7059,0,0,0,1.00000000 MEAS/PLANE,F(平面1),3 PTMEAS/CART,4.0794,57.6999,0,0,0,1.00000000 PTMEAS/CART,5.8532,6.5685,0,0,0,1.00000000 PTMEAS/CART,57.6471,6.8493,0,0,0,1.00000000 ENDMES SNSET/DEPTH,0 DMESW/COMAND,'CONST/SET_PROJ_VEC,FA(平面1),1' F(直线1)=FEAT/LINE,UNBND,CART,5.1593,0,-1.3806,0.99988717,0,-0.01502159,0,-1.00000000,0 MEAS/LINE,F(直线1),2 PTMEAS/CART,5.1593,0,-1.7985,0,-1.00000000,0 PTMEAS/CART,60.7994,0,-1.7985,0,-1.00000000,0 ENDMES F(点1)=FEAT/POINT,CART,0,3.9350,-1.8788,-1.00000000,0,0 MEAS/POINT,COMP,DME,F(点1),1 PTMEAS/CART,0,3.9350,-1.8788,-1.00000000,0,0 ENDMES DATDEF/F(平面1),DAT(A_平面1) D(坐标系1_S)=DATSET/DAT(A_平面1),ZDIR D(坐标系1_R)=ROTATE/ZAXIS,FA(直线1),XDIR D(坐标系1_T)=TRANS/ZORIG,FA(平面1) D(坐标系1_T)=TRANS/YORIG,FA(直线1) D(坐标系1_T)=TRANS/XORIG,FA(点1) DMESW/COMAND,'COORDSYS/CAD=PART' SAVE/DA(坐标系1) MODE/AUTO,PROG,MAN SNSET/RETRCT,1.0000 SNSET/APPRCH,1.0000 DMESW/COMAND,'SNSET/MANRETRCT,1.0000' DMESW/COMAND,'CLEARP/ZDIR,10.0000,ZDIR,10.0000,ON' F(平面2)=FEAT/PLANE,CART,33.9355,55.8219,0,0,0,1.00000000 CALL/EXTERN,DMIS,M(NETDMIS_AUTO_PLANEPOINTS_1006),AUTOFIGURE,F(平面2),PLANE,CART,LSTSQR,33.9355,55.8219,$ 0,0,0,1.00000000,FALSE,FALSE,FALSE,10.0000,"CUR",TRUE,FALSE,POINTS,'6,2.4780,8.9903,0,0,0,1.00000000,$ 1.7664,59.2987,0,0,0,1.00000000,22.1108,94.7779,0,0,0,1.00000000,57.1146,96.6342,0,0,0,1.00000000,60.8528,$ 69.4028,0,0,0,1.00000000,59.2901,5.8277,0,0,0,1.00000000',TOUCH,0.3000,XYPLAN F(直线2)=FEAT/LINE,BND,CART,4.0000,0,-2.0000,64.0000,0,-2.0000,0,-1.00000000,0 CALL/EXTERN,DMIS,M(NETDMIS_AUTO_LINE_1007),AUTOFIGURE,F(直线2),LINE_BND,CART,4.0000,0,-2.0000,1.00000000,$ 0,0,60.0000,FALSE,FALSE,FALSE,10.0000,"CUR",TRUE,FALSE,0,-1.00000000,0,4,0,0,0,TOUCH,0.3000,XYPLAN,0,$ 0,LINE,"","","EXT1","EXT2","EXT3",ENDCAL F(直线3)=FEAT/LINE,BND,CART,0,4.0000,-2.0000,0,59.0000,-2.0000,-1.00000000,0,0 CALL/EXTERN,DMIS,M(NETDMIS_AUTO_LINE_1007),AUTOFIGURE,F(直线3),LINE_BND,CART,0,4.0000,-2.0000,0,1.00000000,$ 0,55.0000,FALSE,FALSE,FALSE,10.0000,"CUR",TRUE,FALSE,-1.00000000,0,0,4,0,0,0,TOUCH,0.3000,XYPLAN,0,0,$ LINE,"","","EXT1","EXT2","EXT3",ENDCAL F(点2)=FEAT/POINT,CART,0,0,-2.0000,0,0,-1.00000000 CONST/POINT,F(点2),INTOF,FA(直线2),FA(直线3) DATDEF/F(平面2),DAT(A_平面2) D(坐标系2_S)=DATSET/DAT(A_平面2),ZDIR D(坐标系2_R)=ROTATE/ZAXIS,FA(直线2),XDIR D(坐标系2_T)=TRANS/XORIG,FA(点2),YORIG,FA(点2) D(坐标系2_T)=TRANS/ZORIG,FA(平面2) SAVE/DA(坐标系2) DMESW/COMAND,'CLEARP/ZDIR,20.0000,ZDIR,10.0000,ON' F(圆1)=FEAT/CIRCLE,INNER,CART,31.5000,31.5000,0,0,0,1.00000000,20.0000 CALL/EXTERN,DMIS,M(NETDMIS_AUTO_CIRCLE_1007),AUTOFIGURE,F(圆1),CIRCLE,INNER,CART,LSTSQR,31.5000,31.5000,$ 0,0,0,1.00000000,20.0000,-1.00000000,0,0,5,-3.0000,0,0,0,0,360.0000,TOUCH,CIRCLE,0.3000,0,FALSE,FALSE,$ FALSE,10.0000,"CUR",TRUE,FALSE,0,FA(VECBLD),10.0000,2.5000,3,XYPLAN,"",'7,0,0,0,0,3.0000,0,10','0,1,0,$ 5.0000',"EXT3",ENDCAL DMESW/COMAND,'CLEARP/-YDIR,-20.0000,ZDIR,80.0000,ON' DMESW/COMAND,'MOVE/CLEARPLANE' S(A90B180)=SNSDEF/PROBE,INDEX,POL,90.0,180.0,0.0000,0.0000,1.0000,189.6500,2.0000 SNSLCT/SA(A90B180) F(圆2)=FEAT/CIRCLE,INNER,CART,21.5000,0,-15.0000,0,-1.00000000,0,20.0000 CALL/EXTERN,DMIS,M(NETDMIS_AUTO_CIRCLE_1007),AUTOFIGURE,F(圆2),CIRCLE,INNER,CART,LSTSQR,21.5000,0,-15.0000,$ 0,-1.00000000,0,20.0000,0,0,1.00000000,5,-3.0000,0,0,0,0,360.0000,TOUCH,CIRCLE,0.3000,0,FALSE,FALSE,FALSE,$ 10.0000,"CUR",TRUE,FALSE,0,FA(VECBLD),10.0000,2.5000,3,XYPLAN,"",'7,0,0,0,0,3.0000,0,10','0,1,0,5.0000',$ "EXT3",ENDCAL DMESW/COMAND,'MOVE/CLEARPLANE' GOTO/INCR,200.000000,0.000000,0.000000,1.000000 S(A0B0)=SNSDEF/PROBE,INDEX,POL,0.0,0.0,0.0000,0.0000,1.0000,189.6500,2.0000 SNSLCT/SA(A0B0) F(圆3)=FEAT/CIRCLE,OUTER,CART,0,0,70.0000,1.00000000,0,0,102.0000
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