Need Help!- CAM Simulation OK but........

[masterfabr]

I have AlibreCAM and when simulating the program looks very good but the machine(Fadal 88 HS) doesn't follow the post . What gives? Any ideas? I'm sure I haven't set/done something. I did a simple rectangle and it was fine but this 2 1/2D countoured part doesn't work.

[yoshi900]

Sounds like the post processing file needs some modification.

[masterfabr]

I have a Fadal with the 88HS control. I use the Fadal post in Alibrecam but I'm wondering if I should be or not. There are 2 formats for a Fadal according to the machine. Fadal and one of the Fanuc systems ,I think it is. I'm going to try the Fanuc posts and see what the code differences are around line 126 where it goes off course.. I think.LOL!!!!

[masterfabr]

Well, that sure wasn't it. LOL!!!


%
N1G70M1
N2G17G40G80G90G0E1
N3T1M6
N4G0X2.867Y7.04S4583M3
N5G43Z2.35H0
N6G1Z0.F11.2
N7X-0.12F45.
N8X-0.221Y7.027
N9X-0.314Y6.988
N10X-0.394Y6.926
N11X-0.456Y6.846
N12X-0.495Y6.753
N13X-0.508Y6.652
N14Y0.013
N15X-0.495Y-0.087
N16X-0.456Y-0.18
N17X-0.394Y-0.261
N18X-0.314Y-0.322
N19X-0.221Y-0.361
N20X-0.12Y-0.374
N21X12.355
N22X12.455Y-0.361
N23X12.548Y-0.322
N24X12.629Y-0.261
N25X12.69Y-0.18
N26X12.729Y-0.087
N27X12.742Y0.013
N28Y6.652
N29X12.729Y6.753
N30X12.69Y6.846
N31X12.629Y6.926
N32X12.548Y6.988
N33X12.455Y7.027
N34X12.355Y7.04
N35X2.867
N36Y6.365
N37X0.167
N38Y0.301
N39X12.067
N40Y6.365
N41X2.867
N42Y5.69
N43X0.842
N44Y0.976
N45X11.392
N46Y5.69
N47X2.867
N48Y5.015
N49X1.517
N50Y1.651
N51X10.717
N52Y5.015
N53X2.867
N54Y4.34
N55X2.192
N56Y2.326
N57X10.042
N58Y4.34
N59X2.867
N60Y3.665
N61Y3.001
N62X9.367
N63Y3.665
N64X2.867
N65X2.855F67.5
N66G0Z2.35
N67X-0.149Y7.036
N68G1Z-0.3F11.2
N69G17
N70G3X-0.508Y6.409I6.804J2.643K-0.3R8.225F45.
N71G0Z2.35
N72X0.666Y7.04
N73G1Z-0.3F11.2
N74G3X-0.508Y4.523I6.804J2.643K-0.3R7.55F45.
N75G0Z2.35
N76Y0.764
N77G1Z-0.3F11.2
N78G3X-0.116Y-0.374I6.804J2.643K-0.3R7.55F45.
N79G0Z2.35
N80X1.519Y7.04
N81G1Z-0.3F11.2
N82G3X0.627Y-0.374I6.804J2.643K-0.3R6.875F45.
N83G0Z2.35


That was the beginning and it does fine till line 70 Ithink it is. It begins the program by doing linear moves to face and then goes to circular facing moves. That is where it goes wrong. The table just travels diagonally instead of doing the circular move till it e-stops at y limit.

[SBC Cycle]

masterfabr, the R is not compatible with the I and J. The Fadal can use either - or, but not both. I would stick with the I and J. More robust.

EDIT: Actually, I took a closer look at the code and I can't figure out what the R value is doing there. It doesn't match the Radius value. Wierd. Also, the H0 at the beginning is basically cancelling the height offset.

EDIT2: Also noticed a K value in there too. That shouldn't be necassary when milling the XY plane (G17)

[masterfabr]

R is for the beginning Z motion dimension.K is depth of cut. At first I was thinking R related to radius but that's not the case. I know nothing about codes though. It ,to me ,looks strange but what do I know. Anyone here running a Fadal and AlibreCAM? DO you have post issues using the Fadal post in AlibreCAM? What have I done wrong?

[masterfabr]

solution found. I had I,J,K and radius chosen in the post generator under the circles tab and I should have had only radius chosen. It seems to be right now. I hope to do a test cut tomorrow. LOL!!!

[masterfabr]

Originally Posted by SBC Cycle masterfabr, the R is not compatible with the I and J. The Fadal can use either - or, but not both. I would stick with the I and J. More robust. EDIT: Actually, I took a closer look at the code and I can't figure out what the R value is doing there. It doesn't match the Radius value. Wierd. Also, the H0 at the beginning is basically cancelling the height offset. EDIT2: Also noticed a K value in there too. That shouldn't be necassary when milling the XY plane (G17)

Yep,watching it cut air I saw some things like that needing fixing.

[Neal]

The I, J, and K when used with a G2 or G3 indicates a sephrical or #d circlular interpolation. The Fadal control can not do that. It can only do a two axis arc in either G17, G18 or G19 planes. The arc also can not cross planes.

Neal

[DareBee]

I will send you my modified PP.
VisualMill and AlibreCam use the same.
Mine is for format 2.