Need Help! Alphacam Disc Cutting Post Processor


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Thread: Alphacam Disc Cutting Post Processor

  1. #1

    Unhappy Alphacam Disc Cutting Post Processor

    Dear Alphacam Professionals,

    I am using Alphacam for Disc Cutting, with a 4 axis machine with disc.

    I do the CAD in the positive X&Y region, and after do the cutting with disc, I postprocess the NC, and the problem is noticed:

    The output gcode, includes minus X measurements, while the work is all in the positive X side.

    I tried to select a milling tool and see the output gcode, there were no problem for the normal tool, only the problem appears when using a DISC tool.


    I attach here photos for the problem, please help me, how to get the good output values of the GCODE.

    Best Regards,

    Similar Threads:
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  2. #2
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    Default Re: Alphacam Disc Cutting Post Processor

    Need look post.



  3. #3

    Default Re: Alphacam Disc Cutting Post Processor

    Here Is the PostProcessor :



    Database Name: Alpha Standard 5 ax Mill or Router
    Control : CNC 787 L
    Machine : MAKA LPF
    Units : MM
    Axes Used : XYZAB
    Coord.System : Absolute
    X Axis : Normal
    Y Axis : Normal
    Z-Axis : Normal
    Customer :
    Contact :
    Tel :
    Fax :
    Dealer Name :
    Post Author : D.WILLIAMS
    Ver 1 Date : 29/10/96
    Notes : Example Post only, for use in training sessions.
    Edit History :

    $----------------------------------------------------------------------------

    Notes and remarks that are to appear in the NC code (but NOT be sent to the machine)
    should be preceded by ' (a single apostrophe)
    Notes and remarks that are local to the Post for your information only should be
    preceded by '' (TWO single apostrophes)

    $------------------------- PROGRAM LEADING/TRAILING LINES -------------------
    $10 File LEADING lines
    $LET FIRST_FEED = 1
    %
    $LET FIRST_TOOL = 1
    $12 Main Program LEADING lines
    P[PROGNUM]
    N[N] ([FNM])
    N[N] G0 G47 G53 F3000 S1300 T1 M6 P948:163.5;P949:0;Z-10
    N[N] M81 M11 X200. Y1300. A0. B0.
    N[N] M0 M81 M5
    N[N] M81 M10
    $15 Program TRAILING lines
    N[N] M29
    $17 File TRAILING Lines
    #
    $----------------------- RAPID MOVES ----------------------------------------
    $20 Rapid Move in XY (MILL/ROUTER/FLAME/LASER) or XZ (LATHE) only
    $IF ABS(TAX) + ABS(TAY) = 0
    $LET ANGLE_A = 0
    $LET ANGLE_B = 0
    $ELSE
    $LET ANGLE_A = (ATAN2(TAY,TAX)) + 90
    $LET ANGLE_B = ATAN2(SQR(TAX**2+TAY**2),TAZ)
    $ENDIF
    $IF ANGLE_A > 270
    $LET ANGLE_A = ANGLE_A - 360
    $ENDIF
    N[N] G0 X[AX] Y[AY] Z[AZ] A[ANGLE_A] B[ANGLE_B]
    $LET FIRST_FEED = 1
    $----------------------------------------------------------------------------
    $21 3D Rapid Move in XYZ (MILL/ROUTER ONLY)
    $IF ABS(TAX) + ABS(TAY) = 0
    $LET ANGLE_A = 0
    $LET ANGLE_B = 0
    $ELSE
    $LET ANGLE_A = (ATAN2(TAY,TAX)) + 90
    $LET ANGLE_B = ATAN2(SQR(TAX**2+TAY**2),TAZ)
    $ENDIF
    $IF ANGLE_A > 270
    $LET ANGLE_A = ANGLE_A - 360
    $ENDIF
    N[N] G0 X[AX] Y[AY] A[ANGLE_A] B[ANGLE_B]
    N[N] Z[AZ]
    $LET FIRST_FEED = 1
    $----------------------------------------------------------------------------
    $25 Rapid Move in Z only (MILL etc)
    $IF FIRST_RAPID = 1
    $LET FIRST_RAPID = 0
    $ELSE
    N[N] G0 Z[AZ]
    $ENDIF
    $LET FIRST_FEED = 1
    $----------------------------------------------------------------------------
    $30 Lines BEFORE a rapid move if Z levels are not used eg Laser or Geometry
    $----------------------------------------------------------------------------
    $35 Lines AFTER a rapid move if Z levels are not used eg Laser or Geometry
    $----------------------- MACHINING FEED MOVES -------------------------------
    $40 Machining FEED lines
    $IF ABS(TAX) + ABS(TAY) = 0
    $LET ANGLE_A = 0
    $LET ANGLE_B = 0
    $ELSE
    $LET ANGLE_A = (ATAN2(TAY,TAX)) + 90
    '' ****** ANGLE A = [ANGLE_A] [(ATAN2(-TAX,TAY))+180]
    $LET ANGLE_B = ATAN2(SQR(TAX**2+TAY**2),TAZ)
    $ENDIF
    $IF ANGLE_A > 270
    $LET ANGLE_A = ANGLE_A - 360
    $ENDIF
    $IF FIRST_FEED = 1 GOTO 10
    $IF ABS(ANGLE_A) < 45 GOTO 10
    $IF ANGLE_A < 0
    $LET NEW_SIGN = -1
    $ELSE
    $LET NEW_SIGN = 1
    $ENDIF
    $IF NEW_SIGN > OLD_SIGN
    $LET ANGLE_A = ANGLE_A - 360
    $ELSEIF NEW_SIGN < OLD_SIGN
    N[N] M00
    N[N] (WARNING A AXIS NEEDS TO UNWIND)
    N[N] (DRIVE CUTTER CLEAR OF JOB)
    N[N] G91 X0. Y0. Z150.(EDIT THIS LINE)
    N[N] G90 A[ANGLE_A] B[ANGLE_B] F[F]
    N[N] G91 X0. Y0. Z-150.M81 [ROT]
    N[N] G90 G1 X[AX] Y[AY] Z[AZ] A[ANGLE_A] B[ANGLE_B] F[F]
    $GOTO 20
    $ENDIF
    ''
    $LL10
    ''
    N[N] G1 X[AX] Y[AY] Z[AZ] A[ANGLE_A] B[ANGLE_B] F[F]
    $LL 20
    $IF ANGLE_A < 0
    $LET OLD_SIGN = -1
    $ELSE
    $LET OLD_SIGN = 1
    $ENDIF
    $LET FIRST_FEED = 0
    $----------------------------------------------------------------------------
    $50 Feed CW arc (APS will automatically limit arcs to 180 degrees maximum)
    N[N] G2 X[AX] Y[AY] R[R] F[F]
    $----------------------------------------------------------------------------
    $60 Feed CCW arc
    N[N] G3 X[AX] Y[AY] R[R] F[F]
    $------------------------ TOOL CHANGES --------------------------------------
    $70 Cancel current tool. Use [T] for current tool number if required.
    $MODAL OFF
    $75 Code for CLOCKWISE spindle rotation - entered into variable RT
    M3
    $76 Code for COUNTER-CLOCKWISE spindle rotation - entered into variable RT
    M4
    $80 Select new tool. Use [T] for new tool number, [S] for spindle speed.
    $IF FIRST_TOOL = 1
    $LET FIRST_TOOL = 0
    N[N] G49 S[T][S] M81[ROT]
    N[N] G54 T[T] M6 P1313;P1314;P1315;P1316;P1317;P685:1;
    $ELSE
    N[N] G49 S[T][S] M81[ROT]
    N[N] T[T] M6
    $ENDIF
    $LET FIRST_RAPID = 1
    $----------------------------------------------------------------------------
    $88
    ''WORK PLANE
    $----------------------------------------------------------------------------
    $89 Used when Tool and Work Plane are changed at the same time (and $582=2)
    ' Change Tool and Work Plane at same time
    $-------------------------- SUBROUTINES ------------------------------------
    $90 CALL subroutine. Use [SN] for subroutine number.
    N[N] M98 P[SN] 'CALL SUB [SN]
    $----------------------------------------------------------------------------
    $100 BEGIN subroutine. Use [SN] for subroutine number.
    :[SN] 'BEGIN SUB [SN]
    $----------------------------------------------------------------------------
    $110 END subroutine
    N[N] M99 'END SUB [SN]
    $------------------- REFERENCE ZERO or ORIGIN SHIFT -------------------------
    $120 Origin shift. Use [OX] and [OY] for values to shift by)
    N[N] G52 X[OX] Y[OY] 'ORIGIN SHIFT
    $----------------------------------------------------------------------------
    $130 Cancel Origin shift. [OX] and [OY] are values by which origin was shifted)
    N[N] G52 X0.0 Y0.0 'CANCEL ORIGIN SHIFT
    $----------------------- MACHINE TOOL COMPENSATION --------------------------
    $140 Code to CANCEL Machine Tool Compensation
    G40
    $141 Code for LEFT Machine Tool Compensation
    G41
    $142 Code for RIGHT Machine Tool Compensation
    G42
    ' Codes above will be assigned to TC for each path.
    $145 Percentage increase in blend radius for sharp internal corners
    0
    $146 Adjust G41/42 code at internal corners for tool radius (1 = Yes 0 = No)
    1
    $147 Comp can be applied on Rapid Approach (1 = Yes 0 = No)
    0
    ' $147=1 is only a flag to indicate that the code in $20 and $25 is correct if comp
    ' is asked for on the rapid approach. It does NOT force this to happen. For
    ' comp to be applied on rapid approach, the Apply Comp on Rapid Approach check
    ' box must be set to YES for each operation. If set, MC=1 in $20 & $25 and
    ' MC = 0 in $40, 50 and 60, so code for $40, 50 and 60 does not have to be changed.
    '
    $148 G41/42 is possible in 5-axis machining along spline or polyline (1=Yes 0=No).
    0
    ' Note that the Post has to have the correct code in $40. Post variable TCF = 1
    ' if G41/42 is selected when AlphaCAM is used, TCX, TCY, TCZ give the tool displacement
    ' vector. CPX, CPY, CPZ give the contact point on the polyline. See Help File.
    $----------------------- COOLANT OFF/MIST/FLOOD/TOOL CODES ------------------

    Codes given in $150 to $153 are assigned to CLT by APS at start of each path.
    $150 Code for Coolant OFF

    $151 Code for MIST Coolant
    M8
    $152 Code for FLOOD Coolant
    M8
    $153 Code for Coolant THROUGH TOOL
    M8
    $------------------------ DRILLING/TAPPING CYCLES ---------------------------
    [ZR] = Retract level, the Z level to rapid down to before feed down begins.
    [ZB] = Z value of the bottom of the hole, [ZP] = peck DISTANCE.
    [ZS] = Safe Rapid level, [ZM] = Material top. All values are ABSOLUTE.

    For LINEAR code use $210/211, $214/215 etc. For SUBROUTINES use $205/206 for
    X/Y values and $212/216 etc to set Z levels etc before calling the subroutine.

    $200 CANCEL drill/tapping cycle
    N[N] M09 ''Turn coolant OFF
    N[N] G80
    $----------------------------------------------------------------------------
    $205 First Hole in SUBROUTINE. NOTE $205/206 apply to ALL drill/peck etc cycles
    N[N] X[AX] Y[AY]
    $206 Next holes in Subroutine
    N[N] X[AX] Y[AY]
    $----------------------------------------------------------------------------
    DRILL cycle - traverse to next hole at SAFE RAPID level [ZS]
    $210 First Hole
    N[N] G98 G81 X[AX] Y[AY] Z[ZB] R[ZR] F[F] [CLT] ''CLT = Coolant Code
    $211 Next holes
    N[N] X[AX] Y[AY]
    $212 Set PARAMETERS before Subroutine call (APS will insert Subroutine call)
    N[N] G98 G81 Z[ZB] R[ZR] F[F] [CLT]
    $----------------------------------------------------------------------------
    DRILL cycle - traverse to next hole at RETRACT level [ZR]
    $214 First Hole
    N[N] G99 G81 X[AX] Y[AY] Z[ZB] R[ZR] F[F] [CLT] ''CLT = Coolant Code
    $215 Next holes
    N[N] X[AX] Y[AY]
    $216 Set PARAMETERS before Subroutine call (APS will insert Subroutine call)
    N[N] G99 G81 Z[ZB] R[ZR] F[F] [CLT]
    $----------------------------------------------------------------------------
    PECKING cycle - traverse to next hole at SAFE RAPID level [ZS]
    $220 First hole
    N[N] G98 G83 X[AX] Y[AY] Z[ZB] R[ZR] Q[ZP] F[F] [CLT] ''CLT = Coolant Code
    $221 Next holes
    N[N] X[AX] Y[AY]
    $222 Set PARAMETERS before Subroutine call (APS will insert Subroutine call)
    N[N] G98 G83 Z[ZB] R[ZR] Q[ZP] F[F] [CLT]
    $----------------------------------------------------------------------------
    PECKING cycle - traverse to next hole at RETRACT level [ZR]
    $224 First hole
    N[N] G99 G83 X[AX] Y[AY] Z[ZB] R[ZR] Q[ZP] F[F] [CLT] ''CLT = Coolant Code
    $225 Next holes
    N[N] X[AX] Y[AY]
    $226 Set PARAMETERS before Subroutine call (APS will insert Subroutine call)
    N[N] G99 G83 Z[ZB] R[ZR] Q[ZP] F[F] [CLT]
    $----------------------------------------------------------------------------
    TAPPING cycle - traverse to next hole at SAFE RAPID level [ZS]
    $230 First hole
    N[N] G98 G84 X[AX] Y[AY] Z[ZB] R[ZR] F[F] [CLT] ''CLT = Coolant Code
    $231 Next holes
    N[N] X[AX] Y[AY]
    $232 Set PARAMETERS before Subroutine call (APS will insert Subroutine call)
    N[N] G98 G84 Z[ZB] R[ZR] F[F] [CLT]
    $----------------------------------------------------------------------------
    TAPPING cycle - traverse to next hole at RETRACT level [ZR]
    $234 First hole
    N[N] G99 G84 X[AX] Y[AY] Z[ZB] R[ZR] F[F] [CLT] ''CLT = Coolant Code
    $235 Next holes
    N[N] X[AX] Y[AY]
    $236 Set PARAMETERS before Subroutine call (APS will insert Subroutine call)
    N[N] G99 G84 Z[ZB] R[ZR] F[F] [CLT]
    $----------------------------------------------------------------------------
    BORING/REAMING/SPOT FACE etc - traverse to next hole at SAFE RAPID level [ZS]
    $240 First Hole
    N[N] G98 G82 X[AX] Y[AY] Z[ZB] R[ZR] P[DW] F[F] [CLT] ''CLT = Coolant Code
    $241 Next holes
    N[N] X[AX] Y[AY]
    $242 Set PARAMETERS before Subroutine call (APS will insert Subroutine call)
    N[N] G98 G82 Z[ZB] R[ZR] P[DW] F[F] [CLT]
    $----------------------------------------------------------------------------
    BORING/REAMING/SPOT FACE etc - traverse to next hole at RETRACT level [ZS]
    $244 First Hole
    N[N] G99 G82 X[AX] Y[AY] Z[ZB] R[ZR] P[DW] F[F] [CLT] ''CLT = Coolant Code
    $245 Next holes
    N[N] X[AX] Y[AY]
    $246 Set PARAMETERS before Subroutine call (APS will insert Subroutine call)
    N[N] G99 G82 Z[ZB] R[ZR] P[DW] F[F] [CLT]
    $-------------------------- GENERAL FORMATS ---------------------------------
    Separate modal values with spaces. More than one letter is OK eg X VX VY
    $500 Modal Text (Will not be repeated in following lines)
    G0 G1 G2 G3
    $502 Modal ABSOLUTE Values (Will not be repeated if the VALUE is the same)
    X Y Z A C F
    $504 Modal INCREMENTAL Values (Will not be put into NC code if VALUE is ZERO)
    I J
    $510 X Y Z I J K values must have + as well as - signs (1 = yes, 0 = no)
    0
    $515 Use point <.> as decimal separator (1 = yes, 0 = use comma <,>)
    1
    $520 Put sub-routines at end of main program (1 = yes, 0 = put at start)
    1
    $525 Quadrant Limit arcs (1 = yes, 0 = Standard APS 180 degree limit)
    0
    $526 Output arcs as one move (1 = Yes, 0 = No - split arcs >= 180)
    0
    $527 Output HELICAL (XYZ) arcs as straight line segments (1 = Yes, 0 = No)
    0
    ' 530 Determines which PLANAR arcs are output as straight line segments.
    $530 0=None, 1=All, 2=All Except Horizontal (XY), 3=Except Horizontal and Vertical (YZ or XZ)
    0
    $532 If arcs are straight line segments, give chord error (mm or inches)
    .1
    $540 Suppress Operations List, START and Comments in NC code (1 = yes, 0 = No)
    0
    'Set $560 - $580 all to 0 if machine is 3-axis.
    $560 4/5 axis Programming point: (1 = pivot, 0 = tool tip)
    0
    $562 4/5 axis Tool C/L offset from pivot point in X
    0
    $563 4/5 axis Tool C/L offset from pivot point in Y
    0
    $565 4/5 axis Tool Holder length
    100
    $570 4/5 axis Max angle (degrees). Set to 0 to indicate 3 - axis machine.
    90
    $580 Use Multi-Planes or Multi-Datums (1 = Yes, 0 = No)
    1
    $582 Multi-Plane or Datums: Select Work Plane BEFORE/AFTER Tool Change
    0
    '582 is for when Work Plane and Tool are changed AT SAME TIME
    ' 0 = Select Tool before Work Plane (Use $80 then $88)
    ' 1 = Select Work Plane before Tool Change (Use $88 then $80)
    ' 2 = Change both at same time (Use $89 only)
    $584 Orientation of Local X or Y axis. 0=Don't care, 1=X Horizontal, 2=Y Horizontal
    0
    $-------------------------- NUMBER FORMATS ----------------------------------
    $700 SUBROUTINE Number format
    6
    $701 Leading figures
    0
    $702 Figures after point
    0
    $705 Subroutine start number
    1
    $----------------------------------------------------------------------------
    $710 LINE NUMBER format
    6
    $711 Leading figures
    0
    $712 Figures after point
    0
    $715 Line start number
    10
    $716 Line number increment
    10
    $----------------------------------------------------------------------------
    $720 X Y Z values format
    2
    $721 Leading figures
    0
    $722 Figures after point
    3
    $----------------------------------------------------------------------------
    $730 ARC centre/radius format
    2
    $731 Leading figures
    0
    $732 Figures after point
    3
    $----------------------------------------------------------------------------
    $740 SPINDLE SPEED format
    6
    $741 Leading figures
    0
    $742 Figures after point
    0
    $743 Maximum Spindle Speed
    999
    $----------------------------------------------------------------------------
    $750 MACHINING FEED format
    6
    $751 Leading figures
    0
    $752 Figures after point
    0
    $753 Maximum Feed Rate (Use mm/min or in/min as appropriate for this Post)
    1000 mm/min
    $755 Round Feed Up/Down to Nearest: (.1 or 1 or 10 ... 0 = don't round)
    10
    $----------------------------------------------------------------------------
    $760 TOOL NUMBER format
    6
    $761 Leading figures
    1
    $762 Figures after point
    0
    $------------------------ RAPIDS and TOOL CHANGE TIMES ----------------------
    Use mm/min or in/min as appropriate for this Post.
    $900 XY Rapid Speed
    15000 mm/min
    $901 Z Rapid Speed
    6000 mm/min
    $902 Time to change tool (seconds)
    15
    $--------------------------- USER VARIABLES ---------------------------------
    ALL user variables must be declared. Variable names can be up to 20 chars.
    Prompts can be up to 50 chars max and can include a default inside < >.
    Put (" ") as format for a text variable. Put ( ) as the format of any numeric
    variable which is to have the same format as X Y (Z) moves. If a different
    format is required, put (Format, Lead figs, Trail figs) eg (6,0,0) = Integer.

    $1000 VARIABLE (format) "Prompt <default>" '' Remark for your info.
    PROGNUM (7,6,0) "Enter Program Number <1>" ''Integer with up to 4 lead zeros
    X_START ( ) "Enter X (G92/G54) Start Value <-600>"
    YV_START ( ) "Enter Y/V (G92/G54) Start Value <600>"
    TABLE ( ) "Table Combination : 1=M10 / 2=M20 / 3=M40 <2>"
    FIRST_RAPID ( )
    FIRST_TOOL ( )
    LAST_TOOL (6,0,0)
    ANGLE_A ( )
    ANGLE_B ( )
    FIRST_FEED ( )
    OLD_SIGN ( )
    NEW_SIGN( )
    $-------------------------- USER DEFINED CODE -------------------------------
    Prompts up to 50 chars max. Variable names up to 20 chars. Any $number in the
    range $1100 - $1119 can be used for each definition. First line after $number
    appears in the first dialog box. Lines up to first $ line appear in second
    dialog box. Lines up to next $ line will be added/inserted in NC program.

    $1100
    $ ---------------------- End of Post



  4. #4
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    Default Re: Alphacam Disc Cutting Post Processor

    This is a standard AlphaCam post.
    And if in 3 axial machining it’s still possible to work somehow,
    then for 4-5 axes of course it will be wrong.
    It is necessary to make a post for your kinematics.



  5. #5

    Default Re: Alphacam Disc Cutting Post Processor

    Can you do that?

    My machine is 4 axis only,
    X,Y,Z, and C

    Stone cutting with vertical disc tool

    Or do you have a post-processor for that?
    Regards



  6. #6
    Member tonyouness's Avatar
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    Default Re: Alphacam Disc Cutting Post Processor

    Hi
    I am wondering if u have resolve your problem I am facing the same problem I have a 5 axis cnc machine & I just edit the post of the 5 axes but I need a 5 axis post for disc cutting. if I have any post i can edit the post
    regards



  7. #7
    Member tonyouness's Avatar
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    Default Re: Alphacam Disc Cutting Post Processor

    hi
    did u get your post for 4 axis disc cutting?



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