在该实例中圆柱的轴线为第一基准,原点为上平面与圆柱轴线的交点。(此方法适用于轴类零件)测量以下特征:圆柱 (圆柱 1),平面 (平面 1),构造 圆柱和平面的刺穿点 (点 1)。
$$ NET_DMIS_20160720
$$ MADE IN DE 2023-2-11 9:47:28
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/CYLNDR,LSTSQR
F(圆柱1)=FEAT/CYLNDR,OUTER,CART,0,0,-44.7402,0,0,1.00000000,40.0000,43.3740
MEAS/CYLNDR,F(圆柱1),8
PTMEAS/CART,-2.3687,-19.8592,-44.7402,-0.11843500,-0.99296181,0
PTMEAS/CART,19.8253,2.6380,-41.3578,0.99126286,0.13190126,0
PTMEAS/CART,-6.3393,18.9688,-39.7620,-0.31696374,0.94843766,0
PTMEAS/CART,-14.9962,-13.2331,-41.4968,-0.74980824,-0.66165520,0
PTMEAS/CART,-16.0157,-11.9790,-8.1821,-0.80078718,-0.59894899,0
PTMEAS/CART,-12.2401,15.8171,-6.5323,-0.61200327,0.79085523,0
PTMEAS/CART,19.9914,0.5852,-3.1612,0.99957191,0.02925755,0
PTMEAS/CART,-3.2324,-19.7371,-1.3662,-0.16161903,-0.98685323,0
ENDMES
GEOALG/PLANE,LSTSQR
F(平面1)=FEAT/PLANE,CART,-0.7546,1.5773,0,0,0,1.00000000
MEAS/PLANE,F(平面1),4
PTMEAS/CART,-11.1094,-8.5971,0,0,0,1.00000000
PTMEAS/CART,11.0618,-8.1507,0,0,0,1.00000000
PTMEAS/CART,10.5307,13.0945,0,0,0,1.00000000
PTMEAS/CART,-13.5013,9.9626,0,0,0,1.00000000
ENDMES
F(点1)=FEAT/POINT,CART,0,0,0,0,0,1.00000000
CONST/POINT,F(点1),PIERCE,FA(圆柱1),FA(平面1)
DATDEF/F(圆柱1),DAT(A_圆柱1)
D(坐标系1_S)=DATSET/DAT(A_圆柱1),ZDIR
D(坐标系1_T)=TRANS/XORIG,FA(点1),YORIG,FA(点1),ZORIG,FA(点1)
SAVE/DA(坐标系1)
使用坐标系功能,将圆柱轴线找正(在该实例中 Z 正方向是圆柱轴线方向)。
设置原点为圆柱轴线与平面刺穿点。 (备注:在该实例中没有特征是用作确定旋转方向的)
注意:作为找正用的特征不仅仅局限在平面, 如果是轴类特征,同样可以使用圆柱或者是圆锥。
同样也可以看出,第二轴线也不一定必须建立,如果对于轴类零件有可能不需要建立第二轴线。