HOW TO FORCE A G17 AFTER G18-19

[nickc]

merry monday everyone,was wondering if there is a way to force a g17 reset after using g18-19 . i just gouged a part because mastercam did not output a g17 for a drill cycle after a raster tool path that was using g18,thanks

[nickc]

forgot to add im using mcam2018

[gcode]

Almost all Mastercam posts should do this automatically.

I'm guessing someone made some edits to the post that they shouldn't have.

 

[huskermcdoogle]

6 minutes ago, gcode said:

I'm guessing someone made some edits tot he post that they shouldn't have.

I'm with G on this one.

Take a look and see if you have a G17 manually added to the post other than in the string select tables.  The only way you should get a G17 is if it is output through sgplane.

 

[nickc]

i have not edited the post,only our reseller has done any editing. i know how to "edit" older posts but havent dicked with this one at all. when we had mastercam x7 it would post that correctly,ill take a look at our new post for what you mentioned

[crazy^millman]

Send back to your reseller and have them fix the issue.

[gcode]

47 minutes ago, nickc said:

i have not edited the post,only our reseller has done any editing. i know how to "edit" older posts but havent dicked with this one at all. when we had mastercam x7 it would post that correctly,ill take a look at our new post for what you mentioned

It would be better to force the sgplane output at the start of every tool path.

IMO the G17 output should be on the X8. Y-1.75 A0 line

[nickc]

thanks folks ,ill contact BOB and get it fixed up! g17 on the first move line like gcode suggested

[guilloche]

I too have this problem. A surfacing toolpath invokes G18. Next comes a drill cycle and no G17 is called. The hole gets drilled in the wrong spot. The post is completely unmodified, generic haas 3 axis mill, inch, from mcam 2017.

If anyone can offer advice about how to make G17 be reinstated I would appreciate it.

[guilloche]

Well, I don't know how to edit the post processor to do this so I'll just create a manual toolpath entry with "G17" (as code) whenever I have a drill toolpath follow a surfacing toolpath. This will inject "G17" in there before the drill cycle without fail.

[gcode]

They have a free Okuma 3X post on the Mastercam tech exchange

You might want to download that one and try it

That post is NOT safe!!!

[Tim Johnson]

You should have something like the following second line.

N3 G91 G30 X0 Y0 Z0
G00 G17 G20 G40 G49 G64 G80 G90 G94 (<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<)
#153=1
IF[#1000NE1]GOTO99003
IF[#910NE1]GOTO99004
IF[#10006GT13.75]GOTO99001
M06 T06 (3/4" FOUR FLUTE CARBIDE END MILL FINISHING FLOOR)
M66
T07
#170=4030
#172=5006
#173=98
#174=0
#199=0
M08
M52
M98P5013
M09
M58
M05
G91 G30 X0 Y0 Z0
#153=#0
M01
 

 

[guilloche]

Thanks for the replies.

I am running a Haas mini-mill, not a lathe. The "G00 G17 G20 G40 G49" etc. safety line does appear at the beginning of every program but not at every tool change.