G187 code on Haas

[Euclid27]

Hello there! I wonder, if it is necessary to use G187 (P1/P2/P3) code on Haas machines (Fanuc control) together with Create arcs in XY check box in Arc Filter/Tolerance field.

 

P1 - rough

P2 - medium

P3 - finish

 

Please help!

 

Here is the sample of NC code:

 

% O0011

(PROGRAM NAME - ROUGH01 )

( 10 MM VHM-SCHRUPPFRÄSER )

N100 G0 G17 G40 G49 G80 G90

N110 T17 M6

N120 M8

G187 P1

G187 E0.03

N130 G28 Z0. G91

N140 G54 G90

N150 G0 G90 X-481.773 Y-24.13 S15000 M3

N160 G43 H17 Z60.

N170 Z40.805

N180 G1 Z38.805 F800.

N190 Y-24.171 Z38.523

N200 Y-24.289 Z38.264

[jmm0422]

What is the problem? Does the surface finish look like crap. If so there is not a lot that can be done. I had the HAAS factory tech up here Frday and Saturday to adress this issue on my GR510 and there is nothing that they were able to do. He did do some servo tunning and was able to get it a little bit better but not much.

 

And I was only running 130 IPM.

 

Jason

[Euclid27]

Yeah, Jason, in places where a tool goes along curved circular surfaces, finish looks like crap . But it seems to me that there is no circular interpalation in this areas at all. (I`ve chosen high speed scallop strategy.) . Maybe I should check .pst or hang myself.

[YoDoug®]

Our Haas mills make beautiful finishes at 30-50Ipm. Anything faster than that the quality goes down. I have not notice any benefits to the g187 codes.

[jmm0422]

G187 basically overrides SETTIINGS 85 & 191.

 

You can also go in and play with SETTING 85 Max Corner Rounding, and 191 default smoothness and see what kinda changes they make. I did not see any difference in our part quality changing these settings.

 

Jason

[peon]

I have also messed with the 85 and 191 SETTINGS and have not noticed any increase in quality. Doug is right. Run 30-50 IPM and the corners will look better. I can run the same programs in a corner on my Fanuc 18i controlled Yama-Seiki at speeds above 100 ipm and have a much better finish than the Haas.