我测量了一个圆柱凸轮 建立的圆柱坐标系，使用ME2DE指令， 但将实际曲线与理论曲线比较时，曲线在近停和运停段一致，而在升、回程段时不一致。 圆柱凸轮应如何进行半径修正？

请上QQ:76924343

请问ME2DE指令是不是pc dmis的指令啊？

汗！ 你进错论坛了，这是Quindos

唉，终于有人问这个问题了，告诉你一个事实，那就是这类凸轮一般情况下在三坐标上没法测，信不信就由你了，如果一定要测，那就得花大力气了。 其实，园柱凸轮的检测有更方便可行的方法

园柱凸轮在三坐标上使用QUINDOS是可以测量的,

PC-DMIS应该有法测量的哟,但是很费时间

曾经做过一个凸轮的测量通用程序，用tutor，不过那是很早以前的了，现在看来有很多缺陷的，不敢拿出来。

这类东西的测量，实先得搞清被测的型面是什么，然后才有被测点法向，不知道那些测园柱凸轮的软件是怎么编的，讲不清这个就测不了。 再说一句，估计有人会用CAD造个这样的凸轮出来，然后就能测了，不知道用什么方法能造出这样的型，就是造出来，精度是多少？ 不说了，想怎么测就怎么测吧{/fd}

见参考程序 ******************************************************************************** * * * P R O G R A M - L I S T I N G * * * ******************************************************************************** !****************************************************************************! ! Notation ........: Inspector........: QUINDOS ! ! Drawing no. .....: Date ............: 2-DEC-02 ! ! Workpiece name ..: BS_2D_C ! !****************************************************************************! 1:STOP START (WKP=BS_2D_C, INS=CP, RPO=N, TOP=N, EDT=N) USECMM (NAM=SAVE$CMM) USEPRB (NAM=PRB(1)) ! MANUAL ALIGNMENT MEPLA (NAM=M_PLN(1), CSY=CSY, MOD=NOE, CPY=DEF$PLA3, ITY=GSS, DEL=N) MECIR (NAM=M_CIR(1), CSY=CSY, PRO=M_PLN(1), MOD=NOE, CPY=DEF$CIR5, INO=I, ITY < =GSS, DEL=N) MECIR (NAM=M_CIR(2), CSY=CSY, PRO=M_PLN(1), MOD=NOE, CPY=DEF$CIR5, INO=I, ITY < =GSS, DEL=N) DIPNTPNT (NAM=M_AXI, TYP=DIS, CSY=CSY, CNN=DIS, EL1=M_CIR(1), DF1=X.$PT, EL2=M_C < IR(2), DF2=X.$PT, CPY=DEF$DIS1, MOD=EVA) BLDCSY (NAM=M_CSY(1), TYP=CAR, SPA=M_PLN(1), SDR=+Z, PLA=M_AXI, PDR=+X, XZE=M_ < CIR(1), YZE=M_CIR(1), ZZE=M_PLN(1)) ! 2D OPERATION ! Define circles and line of the slot X=54.8 DFNCV2D (SGM=SLOT, TYP=ARC, CEN=(0,0), PTS=50, LEN=10, ANG=(90,270), DIR=CCW, < DEL=Y, CSY=M_CSY(1)) DFNCV2D (SGM=SLOT, TYP=LIN, STA=(0,-10), END=(X,-10), PTS=100, DEL=N, CSY=M_CSY < (1)) DFNCV2D (SGM=SLOT, TYP=ARC, CEN=(X,0), PTS=50, LEN=10, ANG=(270,90), DIR=CCW, D < EL=N, CSY=M_CSY(1)) DFNCV2D (SGM=SLOT, TYP=LIN, STA=(X,10), END=(0,10), PTS=100, DEL=N, CSY=M_CSY(1 < )) ! edit the segments of the slot EDTSGM2D (NAM=SLOT) ! Caculate the Points (NPT) of the slot GENCV2D (NAM=NOM_SLOT, SGM=SLOT, DEL=Y, CLW=N, INO=I) ! Chechk in GRAPHIC mode of the NPT's ME2DE (NAM=NOM_SLOT, CSY=M_CSY(1)) EDTNPT (NAM=NOM_SLOT) ! convert to APT's EXCHNG NOM_SLOT, MOV EDTAPT NOM_SLOT SETFLD NOM_SLOT, Z, APT, -5 CURV2D NOM_SLOT, NOM_SLOT, N, , , , , , , , N ! HSS SCANNING ! DSBSYS S_STEP TO CHECK IN SINGLE STEP MODE !ENBSYS (NAM=S_STEP) !INDPRC (NAM=HSS$SETPAR) !LISREA TA0=0.01 DIS=0.07 ACC=100 ! CREATE THE PATH FOR HSS SCANNING CRSCAPTS (NOM=NOM_SLOT, PTD=PTD_SLOT, PRB=PRB(1), DIS=DIS, VEL=5, ACC=ACC, TA0=T < A0, OPN=N, P3D=Y, TYP=APT, A_O=XY, FAC=0.5, COR=Y, CRV=Y) ! TO CHECK THE PROBE VELOCITY !HSSVEL (PTD=PTD_SLOT, A_O=XY)  !INPUT NAME NPT TYPE=HSS, SPA=PTD_SLOT, A=15 PNT/MM ME2DE (NAM=M_SLOT, CSY=M_CSY(1), MOD=NOE, INO=I) ! READ SCA PNT & BUILD THE ELE RDSCAPTS (PTD=M_SLOT, NOM=NOM_SLOT, RES=SLOT_M, OPN=N, PRB=PRB(1), FI1=0, FI2=0 < , DSN=N, DEN=10, TYP=APT, A_O=XY) ! RADIUS CORRECTION RCOR2D (SRC=SLOT_M, DST=SLOT_R, OPN=N, RAD=-5, ERR=ERR) !EDTAPT (NAM=SLOT_R) ! 2D ACT NOM COMPARISON ACNO2D (ACT=SLOT_R, NOM=NOM_SLOT, RES=ACN_SLOT, AOP=N, NOP=N, ERR=ERR) ! BESTFIT & ACT NOM COMPARISON BFIT2D (ACT=SLOT_R, NOM=NOM_SLOT, RES=BFT_SLOT, TRA=BFT_TRA, ORI=N, AOP=N, NOP < =N, ACW=N, NCW=N) ACNO2D (ACT=BFT_SLOT, NOM=NOM_SLOT, RES=ACNB_SLOT, AOP=N, NOP=N, ERR=ERR) ! PLOTTING CONDEVPL '' CONDEVPL ~REM1='' ~REM2=BEFORE BESTFIT CURVEQ_P (ELE=ACN_SLOT, OPN=N, FAC=300) ~REM2=AFTER BESTFIT CURVEQ_P (ELE=ACNB_SLOT, OPN=N, FAC=300) CUTDEVPL ! PRINT HELP OF COMMAND CONDEVLP HELP BFIT2D, LP CUTDEVLP ! STANDARD SCANNING ME2DE SLOT_SCA, , M_CSY(1), , NOE, , , , I RCOR2D SLOT_SCA, SLOT_SCA_R, N, XY, N, , , ERR EDTAPT SLOT_SCA_R ACNO2D SLOT_R, NOM_SLOT, ACN_SLOT, , , , , N, N, , , , , , , ERR BFIT2D (ACW=N, NCW=N) ! FORMAT OBJECT TO ASCII FMTOBJ BS_NOM_SLOT.APT, NOM_SLOT, , , , , ELE, NPT, (X,Y,Z) ! CONVERT ASCII DATA TO QUINDOS OBJECT CNVFIL BS_NOM_SLOT.APT SAVE , , , , , , , QDS_LIB:BS_2D_C.WDB DELAPT ELE:*(), N GENPTS REDUCPTS GENBSPTS ECON2D