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CnC macros? got one to share?

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  • CnC macros? got one to share?

    ONE supplied and modified, as of yet untested.. SHOULD run only in Turbocnc.. the ask and Say commands get it in Mach3.

    ; TurboCNC 4.0 program to g81 polar holes
    M97 O8000 ;Jump to the main program
    ; *** Subroutine to Drill Polar array ***
    N0100 #1005=[#1005 + #1004] ;Increment the angle
    SAY #1005 ;Current angle (Stop at 360):
    #1006=[#1000+(#1002/2)*COS(#1005)] ;compute new X position
    #1007=[#1001+(#1002/2)*SIN(#1005)] ;compute new Y position
    G81 X#1006 Y#1007 ;Drill the hole each increment
    IF #1005 LT #1031 M97 O0100 ;Jump if array not complete
    M99 ;return from subroutine
    ; *********************************
    ; * Main Program *
    ; *********************************
    ;Parameters for the circle (get the center from the operator)
    N8000 ASK #1000 ; What is the X-coord of center (inches):
    ASK #1001 ; What is the Y-Coord of center (inches):
    Ask #1034 ; Enter number of holes
    Ask #1030 ; Enter start degree of the polar array
    Ask #1031 ; Enter End Degree of the polar array
    Ask #1032 ; Enter the Z depth
    Ask #1033 ; Enter the R Clearance
    Ask #1035 ; Enter feedrate
    #1002=1 ;Diameter of the circle (inches)
    #1003=[1031-1030] ;# of steps for a full circle
    ;computed variables
    #1004=0 ;delta (angular increment)
    #1005=0 ;theta (current angle)
    #1006=0 ;next X position
    #1007=0 ;next Y position
    F20 ;set feed rate
    #1004=[#1003/#1034] ;compute theta (TurboCNC 4.0 Total degree swing/number of holes increment
    ; trig functions are in degrees)
    #1006=[#1000+(#1002/2)*COS(#1005)] ;compute starting X
    ; position
    #1007=[#1001+(#1002/2)*SIN(#1005)] ;compute starting Y
    ; position
    G81 X#1000 Y#1001 Z#1032 R#1033 F#1035 ;Drill center hole for axle
    G00 x#1006 y#1007 ;locate the first hole?
    N9100 M98 08000 ;jump to cutting subroutine
    G80 ; release the g81 command to normal
    SAY #0 ;clear display
    M02 ;End of program – G81_tcnc.cnc

    Anyone got a face off macro, a spiral cut to finish size?
    Change the Say and Ask commands to something valid "274", it looks like the same kind of code format used by other programs.
    Excuse me, I farted.

  • #2
    Go to my site download box at and download Spiral Pollygone.vbx

    It's a script I wrote for CamBam that makes all sorts of spirals and related stuff that CamBam will turn into a toolpath.

    Free software for calculating bolt circles and similar: Click Here


    • #3
      Mach3 like wizards for every hobby cnc program?

      I am working on the spiral cut - spiral bore with smaller endmill. It's a wizard in Mach3. Not so in other two programs here.

      Variables.. Radius,Xcenter,Stepover,Ycenter,Ztop, Zdepth,Zincr,Feedrate,G02 or G03, endmill diameter

      Plunge z past ztop zincr..
      Loop this till final circle dimensions.
      Name quadrant moves, P1, P2 P3, P4 CCW quadrants logic..
      P1 xposition=xposition + stepover -Endmill radius, Ycenter
      P2 Xcenter, Yposition=Yposition+stepover-endmill radius
      P3 Xpositon=xposition+stepover+endmill Radius, Ycenter
      P4 Xcenter, Yposition=Yposition+stepover+endmill radius
      Move to x,ycenter
      Move stepover increment if Less than Radius-Radius endmill
      if zdepth is not made, loop back up to zincr plunge..

      I might do this in Python to start with, then Turbo basic or Turbocnc 274 gcode?

      Evan: Cambam looks ever bit as good as the lower releases of Bobcad... and cheap enough to learn with.
      Last edited by Dawai; 01-14-2009, 09:28 PM.
      Excuse me, I farted.