Arc Filter

[Kendo]

These two ramp contours won't output arc moves!

The little 180s at the end of each zig-zag keep coming out as G1 segments

Even though I set the arc filters the same:

The one on the right is all G2/G3 (what I want)

But the one on the left gives me a bunch of G1

The endpoints display doesn't show me this will happen

I saved the toolpath as geometry

On the right: some are arcs, some are nurbs - but they all come out as G2/G3

On the left: same, arcs and nurbs... but all the nurbs come out as G1 segments!

FYI: These arcs are broken into 3 segments so I can slow down the feed at the ends where engagement is max

But I'd like the tiny 180s to be true arcs, and flatten them if possible

tried twice to post the image...

[JParis]

File?

[Kendo]

File attached,

The weird arc slot is in there, which I've talked about on this forum before

Funny thing, MC outputs 3D arcs for some of this ramp slot

And G1 segments on the weird slot

WHY can't they all be G2/G3 !!??

The only G1 moves should be Z!

Fixed segment even broke up the Z, but not the flat arc at the bottom... pretty weird

 

DEEP SLOT.mcam

[JParis]

Try going onto the Wireframe tab and go ahead an hit "Combine Arcs...

 

Regen & repost  :)

[crazy^millman]

Look at the MCD it is set to only give arcs in XY plane. Change to all planes supported and should be good to go. Need to also pay attention to the XZ and YZ plane settings.

 

[JParis]

1 minute ago, crazy^millman said:

Look at the MCD it is set to only give arcs in XY plane. Change to all planes supported and good to go.

Nope, it's not...even the Combine views only gets part of it...

 

I'm still digging

[crazy^millman]

2 minutes ago, JParis said:

Nope, it's not...even the Combine views only gets part of it...

 

I'm still digging

Filter bug that has been present since the X5 planes switch. I have reported this one many times over the years.

[JParis]

OK, here's what's happening...

Go into your Control Def >> Tolerances  Change the tolerance on the Helix change from .0005" to .0002" and regen and repost

Here's you Back 270 after that change....

What's happening is the end arcs, the Z change is so small, it's escaping the .0005" Helix change tolerance 

O0000(T2 54442 MACHINING)
(DATE=DD-MM-YY - 29-06-22 TIME=HH:MM - 11:29)
(MCAM FILE - C:\USERS\JOHNP\DESKTOP\DEEP SLOT.MCAM)
(NC FILE - C:\USERS\JOHNP\DOCUMENTS\MY MASTERCAM 2021\MASTERCAM\MILL\NC\T2 54442 MACHINING.NC)
(MATERIAL - ALUMINUM INCH - 2024)
( T306 | 3/16 BALL ENDMILL | H306 )
N100 G20
N110 G0 G17 G40 G49 G80 G90
( 55742 PUMP UPPER SLOT )
N120 T306 M6
N130 G0 G90 G54 X.0094 Y-.5391 A0. S10000 M3
N140 G43 H306 Z.7
N150 G1 Z.6501 F160.
N160 G3 X0. Y-.5298 I-.0094 J0.
N170 G2 X-.5901 Y-.1913 Z.6348 I0. J.6838
N180 G3 X-.6009 Y-.1976 Z.6344 I-.0054 J-.0032
N190 X.6009 Z.6032 I.6009 J.3516
N200 X.5901 Y-.1913 Z.6028 I-.0054 J.0031
N210 G2 X0. Y-.5298 Z.5876 I-.5901 J.3453
N220 X-.5146 Y-.2962 Z.5751 I0. J.6838
N230 X-.5901 Y-.1913 I.5146 J.4502
N240 G3 X-.6009 Y-.1976 I-.0054 J-.0032
N250 X.6009 I.6009 J.3516
N260 X.5901 Y-.1913 I-.0054 J.0031
N270 G2 X-.5146 Y-.2962 I-.5901 J.3453
N280 G3 X-.5278 Y-.2954 I-.007 J-.0062
N290 G0 Z.7
N300 X-.0094 Y.8471
N310 G1 Z.6501 F160.
N320 G3 X0. Y.8377 I.0094 J0.
N330 G2 X.5901 Y.4993 Z.6348 I0. J-.6837
N340 G3 X.6009 Y.5056 Z.6344 I.0054 J.0032
N350 X-.6009 Z.6032 I-.6009 J-.3516
N360 X-.5901 Y.4993 Z.6028 I.0054 J-.0031
N370 G2 X0. Y.8377 Z.5876 I.5901 J-.3453
N380 X.5146 Y.6042 Z.5751 I0. J-.6837
N390 X.5901 Y.4993 I-.5146 J-.4502
N400 G3 X.6009 Y.5056 I.0054 J.0032
N410 X-.6009 I-.6009 J-.3516
N420 X-.5901 Y.4993 I.0054 J-.0031
N430 G2 X.5146 Y.6042 I.5901 J-.3453
N440 G3 X.5278 Y.6034 I.007 J.0062
N450 G0 Z.7
N460 M5
N470 G91 G28 Z0.
N480 G28 X0. Y0. A0.
N490 M30
%
 

[JParis]

Not at all to beat on Kendo as he did indeed share a file..

Problems like the one he just experienced is why sharing a file is so important...

There is simply not much hope that the tolerance issue would have been found based solely on screen caps....his file had the conttrol def, that gave the person trying to help(me & others) a real world look and ability to debug what was actually goingon in the file...

If another user is reading this and needs help, please, please, please help us help you and share a file.

 

[Kendo]

Thnkas JP, that worked on the two sets of arc slots

Any idea about the weird slot?

Can't get it to quit making segments

[JParis]

1 minute ago, Kendo said:

Any idea about the weird slot?

It's a 3D contour.....I don't think there's much you'll do there...

As an option though, instead of doing it as a 3D contour, create a straight line, chain that and then project it down on the surfaces that I am guessing are in your full file...you can then apply the filter to that and get some cleaner output

[Kendo]

That's so weird, this was addressed in my other thread a while back

That weird slot is so easy to code longhand with the cad points

And its 5 lines of G2/G3, but Mcam craps its pants

[JParis]

See if this is any better for you

I cleaned up the filtering and used the chookk ARC3D

O0000(T2 54442 MACHINING)
(DATE=DD-MM-YY - 29-06-22 TIME=HH:MM - 13:21)
(MCAM FILE - C:\USERS\JOHNP\DESKTOP\DEEP SLOT.MCAM)
(NC FILE - C:\USERS\JOHNP\DOCUMENTS\MY MASTERCAM 2021\MASTERCAM\MILL\NC\T2 54442 MACHINING.NC)
(MATERIAL - ALUMINUM INCH - 2024)
( T306 | 3/16 BALL ENDMILL | H306 )
N100 G20
N110 G0 G17 G40 G49 G80 G90
( 55742 RAMP LOWER SLOT )
N120 T306 M6
N130 G0 G90 G54 X-.5931 Y.5066 A0. S2852 M3
N140 G43 H306 Z.7
N150 G1 Z.4441 F6.16
N160 G2 X-.2785 Y.7853 I.5931 J-.3526
N170 X-.1742 Y.8216 Z.625 I.2763 J-.6248
N180 G1 X-.1667 Y.8236 Z.6346
N190 X-.0954 Y.8375 Z.6341
N200 G2 X.1198 Y.8336 I.0953 J-.6805
N210 X.285 Y.7825 Z.5576 I-.1203 J-.6811
N220 X.4076 Y.7109 Z.5004 I-.285 J-.6287
N230 X.4885 Y.6414 Z.4627 I-.4077 J-.5573
N240 G1 X.5283 Y.598 Z.4441
N250 G2 X.5911 Y.5098 I-.5103 J-.43
N260 G0 Z.7
N270 X-.5931 Y.5066
N280 G1 Z.3454 F6.16
N290 G2 X-.2785 Y.7853 I.5931 J-.3526
N300 X-.1742 Y.8216 Z.5263 I.2763 J-.6248
N310 G1 X-.1667 Y.8236 Z.5358
N320 X-.0954 Y.8375 Z.5354
N330 G2 X.1198 Y.8336 I.0953 J-.6805
N340 X.285 Y.7825 Z.4588 I-.1203 J-.6811
N350 X.4076 Y.7109 Z.4017 I-.285 J-.6287
N360 X.4885 Y.6414 Z.364 I-.4077 J-.5573
N370 G1 X.5283 Y.598 Z.3454
N380 G2 X.5911 Y.5098 I-.5103 J-.43
N390 G0 Z.7
N400 X-.5931 Y.5066
N410 G1 Z.2466 F6.16
N420 G2 X-.2785 Y.7853 I.5931 J-.3526
N430 X-.1742 Y.8216 Z.4275 I.2763 J-.6248
N440 G1 X-.1667 Y.8236 Z.4371
N450 X-.0954 Y.8375 Z.4366
N460 G2 X.1198 Y.8336 I.0953 J-.6805
N470 X.285 Y.7825 Z.3601 I-.1203 J-.6811
N480 X.4076 Y.7109 Z.3029 I-.285 J-.6287
N490 X.4885 Y.6414 Z.2652 I-.4077 J-.5573
N500 G1 X.5283 Y.598 Z.2466
N510 G2 X.5911 Y.5098 I-.5103 J-.43
N520 G0 Z.7
N530 X-.5931 Y.5066
N540 G1 Z.1479 F6.16
N550 G2 X-.2785 Y.7853 I.5931 J-.3526
N560 X-.1742 Y.8216 Z.3288 I.2763 J-.6248
N570 G1 X-.1667 Y.8236 Z.3383
N580 X-.0954 Y.8375 Z.3379
N590 G2 X.1198 Y.8336 I.0953 J-.6805
N600 X.285 Y.7825 Z.2613 I-.1203 J-.6811
N610 X.4076 Y.7109 Z.2042 I-.285 J-.6287
N620 X.4885 Y.6414 Z.1665 I-.4077 J-.5573
N630 G1 X.5283 Y.598 Z.1479
N640 G2 X.5911 Y.5098 I-.5103 J-.43
N650 G0 Z.7
N660 X-.5931 Y.5066
N670 G1 Z.0491 F6.16
N680 G2 X-.2785 Y.7853 I.5931 J-.3526
N690 X-.1742 Y.8216 Z.23 I.2763 J-.6248
N700 G1 X-.1667 Y.8236 Z.2396
N710 X-.0954 Y.8375 Z.2391
N720 G2 X.1198 Y.8336 I.0953 J-.6805
N730 X.285 Y.7825 Z.1626 I-.1203 J-.6811
N740 X.4076 Y.7109 Z.1054 I-.285 J-.6287
N750 X.4885 Y.6414 Z.0677 I-.4077 J-.5573
N760 G1 X.5283 Y.598 Z.0491
N770 G2 X.5911 Y.5098 I-.5103 J-.43
N780 G0 Z.7
N790 M5
N800 G91 G28 Z0.
N810 G28 X0. Y0. A0.
N820 M30

JP-DEEP SLOT.mcam

[Kendo]

Thanks again JP

That cleaned it up a lot I'll play around with the chook in the future

I also understand that tolerance setting now thanks to you

That was a good catch!

[JParis]

Is it as clean as it could be by hand, no...there are scenerios where hand code will just always be cleaner but on the whole, you'll always do better in CAM..

That code will certainly cut cleaner than a bunch of XYZ moves.