what do I need to change in osai (onsrud) post

[terry5357]

Now the post is setup to cut in spline mode. What I need it to do is to use arcs when cutting 2D shapes. HELP!!!!!!!!!!!!!!

[JohnW@Kauffman]

I read your post in another thread before this one. We use 2 different posts: 1 for 5 ax work, and 1 for 3 axis jobs. Using a 5" circle as example, ramp contour toolpath, the 5 ax post will give this:

 

;( TOOL - 01 )

N160 M06 T1

N170 M03 S15000

N180 G00 X2.375 Y0. A0. C0.

N190 Z.25

N200 Z.1

N210 G01 Z0. F100.

N220 X2.373084 Y.09538 Z-.005 F300.

N230 X2.367339 Y.190606 Z-.01

N240 X2.357775 Y.285525 Z-.015

N250 X2.344406 Y.379983 Z-.02

N260 X2.327254 Y.473828 Z-.025

N270 X2.306348 Y.566908 Z-.03

N280 X2.28172 Y.659074 Z-.035

N290 X2.253411 Y.750176 Z-.04

N300 X2.221466 Y.840068 Z-.045

N310 X2.185937 Y.928604 Z-.05

N320 X2.146881 Y1.015642 Z-.055

N330 X2.10436 Y1.101042 Z-.06

N340 X2.058445 Y1.184664 Z-.065

N350 X2.009208 Y1.266376 Z-.07

N360 X1.95673 Y1.346044 Z-.075

N370 X1.901094 Y1.42354 Z-.08

N380 X1.842391 Y1.49874 Z-.085

N390 X1.780715 Y1.571521 Z-.09

N400 X1.716166 Y1.641767 Z-.095

N410 X1.648848 Y1.709364 Z-.1

N420 X1.57887 Y1.774203 Z-.105

N430 X1.506344 Y1.836179 Z-.11

N440 X1.431388 Y1.895192 Z-.115

N450 X1.354122 Y1.951148 Z-.12

N460 X1.274672 Y2.003955 Z-.125

N470 X1.192295 Y2.054096

N480 X1.107924 Y2.100805

N490 X1.021727 Y2.14405

N500 X.933845 Y2.18376

N510 X.844424 Y2.21987

N520 X.75361 Y2.252321

N530 X.661554 Y2.281057

N540 X.568407 Y2.306033

N550 X.474323 Y2.327207

N560 X.379457 Y2.344544

N570 X.283965 Y2.358016

N580 X.188005 Y2.3676

N590 X.091736 Y2.373281

N600 X-.004685 Y2.375048

N610 X-.101099 Y2.3729

N620 X-.197345 Y2.36684

N630 X-.293267 Y2.356877

N640 X-.388704 Y2.343029

N650 X-.483501 Y2.325318

N660 X-.577501 Y2.303773

N670 X-.670549 Y2.278429

N680 X-.762491 Y2.24933

N690 X-.853176 Y2.216521

N700 X-.942454 Y2.180059

N710 X-1.030178 Y2.140002

N720 X-1.116204 Y2.096417

N730 X-1.20039 Y2.049375

N740 X-1.282597 Y1.998955

N750 X-1.362689 Y1.945239

N760 X-1.440534 Y1.888316

N770 X-1.516005 Y1.82828

N780 X-1.588975 Y1.765229

N790 X-1.659327 Y1.699268

N800 X-1.726942 Y1.630505

N810 X-1.79171 Y1.559054

N820 X-1.853524 Y1.485033

N830 X-1.912283 Y1.408564

N840 X-1.967888 Y1.329772

N850 X-2.020249 Y1.248787

N860 X-2.069279 Y1.165744

N870 X-2.114898 Y1.080779

N880 X-2.15703 Y.994032

N890 X-2.195605 Y.905646

N900 X-2.230561 Y.815767

N910 X-2.261839 Y.724543

N920 X-2.289388 Y.632124

N930 X-2.313162 Y.538663

N940 X-2.333123 Y.444314

N950 X-2.349237 Y.349233

N960 X-2.361477 Y.253576

N970 X-2.369825 Y.157501

N980 X-2.374265 Y.061166

N990 X-2.374791 Y-.03527

N1000 X-2.371401 Y-.131648

N1010 X-2.364102 Y-.227808

N1020 X-2.352905 Y-.323593

N1030 X-2.337829 Y-.418845

N1040 X-2.318899 Y-.513406

N1050 X-2.296145 Y-.60712

N1060 X-2.269605 Y-.699834

N1070 X-2.239324 Y-.791394

N1080 X-2.205351 Y-.881649

N1090 X-2.167741 Y-.97045

N1100 X-2.126558 Y-1.057651

N1110 X-2.081869 Y-1.143109

N1120 X-2.033747 Y-1.226682

N1130 X-1.982272 Y-1.308232

N1140 X-1.927529 Y-1.387626

N1150 X-1.869609 Y-1.464732

N1160 X-1.808605 Y-1.539423

N1170 X-1.74462 Y-1.611576

N1180 X-1.677759 Y-1.681072

N1190 X-1.608131 Y-1.747796

N1200 X-1.535852 Y-1.811639

N1210 X-1.461041 Y-1.872495

N1220 X-1.383821 Y-1.930263

N1230 X-1.304319 Y-1.984849

N1240 X-1.222668 Y-2.036163

N1250 X-1.139 Y-2.08412

N1260 X-1.053454 Y-2.128641

N1270 X-.966172 Y-2.169652

N1280 X-.877296 Y-2.207086

N1290 X-.786975 Y-2.240881

N1300 X-.695355 Y-2.270982

N1310 X-.60259 Y-2.297338

N1320 X-.50883 Y-2.319907

N1330 X-.414232 Y-2.338651

N1340 X-.318951 Y-2.353539

N1350 X-.223144 Y-2.364547

N1360 X-.126969 Y-2.371657

N1370 X-.030585 Y-2.374856

N1380 X.065849 Y-2.37414

N1390 X.162175 Y-2.369509

N1400 X.258234 Y-2.360973

N1410 X.353867 Y-2.348543

N1420 X.448916 Y-2.332241

N1430 X.543226 Y-2.312095

N1440 X.636639 Y-2.288136

N1450 X.729003 Y-2.260405

N1460 X.820165 Y-2.228947

N1470 X.909975 Y-2.193814

N1480 X.998285 Y-2.155064

N1490 X1.084949 Y-2.112762

N1500 X1.169824 Y-2.066976

N1510 X1.25277 Y-2.017782

N1520 X1.333651 Y-1.965261

N1530 X1.412333 Y-1.9095

N1540 X1.488687 Y-1.850591

N1550 X1.562586 Y-1.788631

N1560 X1.633909 Y-1.723722

N1570 X1.702538 Y-1.655971

N1580 X1.76836 Y-1.58549

N1590 X1.831267 Y-1.512395

N1600 X1.891154 Y-1.436806

N1610 X1.947924 Y-1.358849

N1620 X2.001481 Y-1.278651

N1630 X2.051739 Y-1.196345

N1640 X2.098615 Y-1.112067

N1650 X2.14203 Y-1.025955

N1660 X2.181914 Y-.938151

N1670 X2.2182 Y-.848801

N1680 X2.25083 Y-.758052

N1690 X2.279748 Y-.666052

N1700 X2.304908 Y-.572955

N1710 X2.326267 Y-.478913

N1720 X2.343791 Y-.384081

N1730 X2.357451 Y-.288616

N1740 X2.367225 Y-.192676

N1750 X2.373095 Y-.096417

N1760 X2.375053 Y0.

N1770 X2.373084 Y.09538

N1780 X2.367339 Y.190606

N1790 X2.357775 Y.285525

N1800 X2.344406 Y.379983

N1810 X2.327254 Y.473828

N1820 X2.306348 Y.566908

N1830 X2.28172 Y.659074

N1840 X2.253411 Y.750176

N1850 X2.221466 Y.840068

N1860 X2.185937 Y.928604

N1870 X2.146881 Y1.015642

N1880 X2.10436 Y1.101042

N1890 X2.058445 Y1.184664

N1900 X2.009208 Y1.266376

N1910 X1.95673 Y1.346044

N1920 X1.901094 Y1.42354

N1930 X1.842391 Y1.49874

N1940 X1.780715 Y1.571521

N1950 X1.716166 Y1.641767

N1960 X1.648848 Y1.709364

N1970 X1.57887 Y1.774203

N1980 X1.506344 Y1.836179

N1990 X1.431388 Y1.895192

N2000 X1.354122 Y1.951148

N2010 X1.274672 Y2.003955

N2020 G00 Z.25

N2030 M05

N2040 G00 G79 Z(@ZPARKP1)

N2050 G00 G79 A0. C0.

N2060 M30

 

The 3 axis post yields this:

 

N100 MOV=72

N110 VFF=1

N120 FCT=.00001

N130 G00 G79 Z(@ZPARKP1)

;( TOOL - 01 )

N140 M06 T1

N150 M03 S15000

N160 G00 X2.375 Y0.

N170 Z.25

N180 X2.375 Y0. Z.1

N190 G01 Z0. F100.

N200 G03 X1.2747 Y2.004 Z-.125 R2.375 F300.

N210 X0. Y2.3751 R2.3751

N220 X-2.3751 Y0. R2.3751

N230 X0. Y-2.3751 R2.3751

N240 X2.375 Y0. R2.3751

N250 X1.2747 Y2.004 R2.375

N260 G00 X1.2747 Y2.004 Z.25

N270 M05

N280 M30

 

Am I understanding your question correctly? You want output like the second example, but your post is outputting X,Y short segments as in the first example?

[terry5357]

John,

You are understanding perfectly. The post I have now was written to oput spline type moves because our onsrud is an 8' x 20' machine, for some reason the owner wanted the post to output only linear moves. For me it seems like the "reduce feedrate in corners" switch is on.

I feel the machine should move at a fairly consitant feedrate whether it be 50% or 100%

[JohnW@Kauffman]

I got both posts from Onsrud. They configured them to our machine when they set it up. Contact Robert Ehret at Onsrud, 1-800-638-8185 and tell him what you need. He will make sure the post you get is configured to your machine. The one I have that outputs arcs is MPOSAIvX_3-31-06, set up to work with Mastercam X2.

 

Another thing you can do until you get the post modified is adjust the feed rate in the Osai control. You can play with it in your programming until you get the speed the way you want it. Do the first few lines of your program look like this?

 

N100 MOV=72

N110 VFF=1

N120 FCT=.00001

N130 G90

N140 G00 G79 Z(@ZPARKP1)

N150 G00 G79 A0. C0.

N160 (UAO,7)

 

If so, you can edit the NC file by inserting a couple of lines and play with the speed of the machine until you get what you want. After the line “FCT=.00001”, insert

 

VEF=2

MDA=90

 

so that it looks like this:

N100 MOV=72

N110 VFF=1

N120 FCT=.00001

VEF=2

MDA=90

N130 G90

N140 G00 G79 Z(@ZPARKP1)

N150 G00 G79 A0. C0.

N160 (UAO,7)

 

you can adjust the "2" to any number up to about 20, for example VEF=6. The 2 is probably the machines default speed. Work up slowly. On our machine, VEF=10 is about as high as I wanted to go. After that, it got really jerky on small arcs. Once you get the speed more to your liking, the setting can be made permanent in the control, so you don't have to edit the NC output every time.

 

HTH

[terry5357]

From what the owner tells me thisis what the program is suppose to look like

 

N5G70

N6G90

N7G94

N8G40

N9G17

N10G27

N11CET=.001

N12ARM=1

N13DLA=1

N14MOV=72

N15VFF=1

N16VEF=0.50

N17CRT=0

N18CRK=1

N19DYM=0

N20MDA=10

N21JRK=.5

N22T01M66

N23S10000M03

N24(UAO,1)

N25(UIO,Z(-1*L370))

N26(TCP,5)

N27G00X0.Y0.Z2.A0.C0.

[JohnW@Kauffman]

How old is your machine? Call Robert or Rich at Onsrud and ask one of them if you can change the VEF=0.50 in your machine without risking damage, or if there are other ways you can safely modify the speed. If they say you can, then you can experiment with the speed of the machine a bit, and they will tell you what to adjust and what increment to use to gradually work up to a more satisfactory speed. I wouldn't try my earlier suggestion without first talking to Onsrud, as it looks like your machine is configured different than ours.

[terry5357]

CET=.001

ARM=1

DLA=1

MOV=72

VFF=1

VEF=0.50

CRT=0

CRK=1

DYM=0

MDA=10

JRK=.5

Jon could you give me defs. for the above. If it is too much of a pain I really understand. With defs I may be able to make some sense of it all.

Thanks for all your help thus far

[JohnW@Kauffman]

I'm pretty new at this so I don't know all the definitions of those parameters. I believe that CET is circle endpoint tolerance, VEF is a velocity factor and MDA is maximum deceleration angle. I'm not sure about this, but changing any of the parameters may affect the warranty on the machine, so my best suggestion is that you call Onsrud for help on adjusting the speed. They'll walk you through what you should or should not modify to get the machine to do what you want.

 

Sorry I'm not of more help.