Helix bore and cutter comp control

[markypete]

(Mastercam 2018)

At the program level, is there a way to handle cutter comp cancellation at the end of a helix bore operation?

With a perpendicular entry, I'm getting a good block of code  with  G41 with a G1 move. At the end, I'm getting a bad block of code with a G40 on a G3 move. My machines cannot cutter comp on anything other than G1 moves.

Thanks for your help,

Mark

Code example...

T5 (T5|0.375 DIA. NECKED 3FL C.EMILL|TOOL DIA. - .375)
M6
G0 G90 G54 X1.4023 Y-5.2061 S7500 M3
G43 H5 Z5.
M8
Z.95
G1 Z.9 F35.
G41 D5 X1.4142 Y-5.2267
G3 X1.3905 Y-5.1856 I-.0119 J.0206
Z.825 I.0237 J-.0411
Z.75 I.0237 J-.0411
...

Z-.9 I.0237 J-.0411
X1.4617 Y-5.2267 Z-.95 I.0237 J-.0411
I-.0475 J0.
G40 X1.4142 I-.0237 J0. 
G0 Z1.
Z5.
M5
G91 G28 Z0. M9
G90 G53 X-15 Y-1
M30

 

[gcode]

On the Cut Parameters page set "Entry/Exit Arc Sweep" to 90° and check "Start at Center"

If its a big hole and you don't want to start at center, uncheck it , set Entry/Exit arc  to 90° or less as desired

and check Perpendicular entry

 

[markypete]

Thanks gcode,

Your suggestion worked like a charm.

[gcode]