3d contour with arcs

[jlw™]

It's not surfacng. It's a perfect radius and center of ball. The middle i finish with a parallel path but the width has a -0./+.002 tolerance so i want cc. It works and outputs arc and it runs fine in the machine but backplot is whacky and verify will not run it at all.

 

I guess it's like axis sub, you just have to accept that it looks wrong and runs right.

[Jayson Kramer]

Can you share just the part aera that needs this done and in the space you are doing it in.

[crazy^millman]

Kick your tolerance down to .0001 and then move you slider to 95% and see what you get for NC output. I had .001 and was getting bad results off a sample I was putting together to show you how I would go about it. When I kicked it down to the tolerance and move the slider here is the output I got.

%
O0000 (Toolpath Group-2)
(MCX FILE  - T)
(PROGRAM   - Toolpath Group-2.NC)
(DATE      - FEB-24-2017)
(TIME      - 5:05 PM)
(T307 - 1/4 BALL ENDMILL     - H307 - D307 - D0.2500" - R0.1250")
G00 G17 G20 G40 G80 G90
G91 G28 Z0.
(COMPENSATION TYPE - WEAR COMP)
N0307 T307 M06
(MAX - Z13.0025)
(MIN - Z5.1609)
G00 G17 G90 G54 X4.2 Y5.125 S2139 M03
G43 H307 Z5.6609
G94 G01 G41 D307 Y5.375 F6.42
X4.
X3.7885 Z5.6608
G18 G02 X3.686 Z5.636 I.0062 K-.2499
G03 X2.497 Z5.282 I-1.686 K3.489
X1.2571 Z5.3219 I-.497 K3.843
X.3112 Z5.6373 I.7432 K3.8043
G02 X.2053 Z5.6609 I-.1059 K-.2264
G01 X0.
X-.2
G40 Y5.125
Z5.8609
G00 Z5.9109
M05
G91 G28 Z0.
G28 Y0.
G90
M30
%

See if this looks like what you were trying to accomplish on the side.

 

https://www.dropbox.com/s/41z35o3nb9cq8fl/5th%20Axis%20Radius%20Cut%20with%20Arcs%20and%20Comp.mcam?dl=0

 

I would do the center like you want using the walls as check surfaces and then do the side walls like this and call it a day.

[jlw™]

Ron, you got email.

[jlw™]

Ron, Jay, you guys have email.

[crazy^millman]

I looked at your file this morning. I posted using the .001 and got the same results you did. I changed it to .0001 regenerated the toolpaths using a Postability Post and got what I would consider good code. If you do it with .0001 and still get the same results change to a generic machine and see if you still get the same thing. Odd one you are fighting and something I would send in to your dealer or to posts (at) mastercam (dot) com as a .z2g file with mmd/cmd/pp and let either your dealer or them get to the bottom of.

[Jayson Kramer]

Mr J , i sent some followups and a least one screen shot to get the backplot to work correct. as for outputting arc moves that post no issues. Shown in pictures.

 

As for Verify it has issues trying to handle the Control motion in the versify. I would use were anyways and all will go well Grasshooper.

[Matthew Hajicek - Singularity]

Okay, looking at your file I get it now.  You want to use comp 'cause you're coming up to a wall sideways.

 

You can add comp to my example (or any other surfacing path) in the toolpath editor, or with canned text (if you set it up in your post).

[jlw™]

Ron, Jay, Matt, thanks for the input guys.  I can not run wear, too big of a change to existing ways of the shop.  Ron, when I set it to 0.0001 I still get one op (op7) that is giving fits.  I would really like to not have to do any hand edits... I'm too freakin busy.  I'll look at it again tonight.  I did not try posting with another post.  However, posted code looks good regardless of backplot/verify.  In fact, it's been running.  I just want to know why mcam will not work properly with it.  For Ron tho, I did not get any arc until I cranked it to 0.0001in total tolerance.  That totally baffles me.  Guess I am thinking wrong about that slider.  I well play with it some tonight.

 

 

Thank you gentlemen.

[Jayson Kramer]

J you saw my Cimco posting did not do anything but select your op7 and post. but I did not have your Mazak post to post but used a Mattsura post to get the results.