CNC LATHE BROACHING

[Wildcat]

I am trying to come up with a macro to broach on a CNC Lathe. I have the following but it doesnt seem to want to work. Can someone look at this and see if they see anything that stands out? I have the main and sub together to look at.

%
O0008
(BROACH MACRO PROGRAM)
(CONTAINS SUB PROGRAM #0070)

(ENTER YOUR KEYWAY DATA ON THE NEXT 5 LINES)
#501=2.4000(ENTER KEYWAY LENGTH HERE)
#502=.9682(ENTER STARTING DIAMETER HERE)
#503=1.25(ENTER ENDING DIAMETER HERE)
#504=.002(ENTER DEPTH OF CUT PER PASS HERE)
#505=150(ENTER IPM FEED RATE HERE)

(DO NOT EDIT THESE 3 LINES)
#506=[[#503-#502]/2](AUTO CALCULATES FULL DEPTH)
#507=[#506/#504](AUTO CALCULATES NUMBER OF PASSES)
#508=1(RESETS PASS COUNTER)

G20(INCH INPUT)
M68 (LOCK SPINDLE)
G98(FEED PER MINUTE)
G50S500(SET MAX RPM)
G00G30U0W0(RAPID TO HOME POSITION)
T0808(CALL TOOL)
M23(C-AXIS MODE ON)
G0C0(ROTATE C AXIS)
G0X[#502]Z.10T0101(CALL OFFSET AND RAPID 1 INCH IN FRONT OF PART)
M8(COOLANT ON)
M98P0070L[#507](CALL SUBPROGRAM O0070 AND REPEAT #507 TIMES)
M24(C-AXIS MODE OFF)
G0G99Z1.M9(COOLANT OFF)
G30U0W0T0800(GO HOME AND CANCEL OFFSET)
M67 (UNLOCK SPINDLE)
M30(RESET PROGRAM)
%

%
O0070
(SUB PROGRAM)
G98G1Z[[[#501]*[-1]]-.10]F[#505](FEED PER MINUTE)
X[#502](RETRACT ON X)
G0Z1.0(RETRACT ON Z)
#508=#508+1(PASS COUNTER)
G0X[#502+[#508*#504]](RAPID TO NEXT X POSITION)
M99(RETURN TO MAIN PROGRAM)
%

Thanks

 

[crazy^millman]

You have a triple Bracket not sure that will work on Fanuc and don't have a machine to test.

Where is your while do loop for the #508? I don't see an logic to support your process.

 

[SlaveCam]

Why not just use G71 and G70 for spring passes?

[Charlie Pierson]

What is not working ??

 

I would have put all of the logic in the sub and cut with a WHILE-END loop but M98P0070L#507 should work ok.

Meanwhile try:

M98P0070L#507(CALL SUBPROGRAM O0070 AND REPEAT #507 TIMES)

and

G98G1Z-[#501+.10]F#505(FEED PER MINUTE)

[Wildcat]

Charlie that is almost like what we done. We have it working now.

This Macro writing is a new thing for me. The one I have is one I found and started to modify it. Now that I have my beak wet I must learn it. Im trying to learn C++ as well.

Thanks for the help and suggestion guys, I very much appreciate it.