v-29

[1234567]

Anyone know what the current build of v-29 is? its still doing some pretty wacky things. look at the y axis start position on line 70. now look at line 90 for the finish pass. what the heck? Makes no difference what post i use it always gives me a crazy y axis start position and corrects its self on line 72.


(b90.-face mill b90-Profile Rough)
(FACE MILL B90)

N68G00G90 B90.
N69S650M03
N70 G90 G55 X4.3527 Y5.1874
N71 G43 H1 Z1.2087
N72 X4.0485 Y0.
N73 Z0.35
N74 Z0.25
N75 G01 Z0.08 F35.
N76 X3.2485 F8.
N77 X0.0003
N78 X-0.1997
N79 G00 Z0.35
N80 X4.0485
N81 Z0.18
N82 G01 Z0.01 F35.
N83 X3.2485 F8.
N84 X0.0003
N85 X-0.1997
N86 G00 Z0.35
N87 Z1.2087

(NEXT CUT - SAME TOOL)
(b90.-face mill b90-Profile Finish)
(FACE MILL B90)

N88G00G90 B90.
N89S650M03
N90 G90 G55 X4.0485 Y0.
N91 G43 H1 Z1.2087
N92 Z0.35
N93 Z0.25

[BurrMan]

Anyone know what the current build of v-29 is? its still doing some pretty wacky things. look at the y axis start position on line 70. now look at line 90 for the finish pass. what the heck? Makes no difference what post i use it always gives me a crazy y axis start position and corrects its self on line 72.


(b90.-face mill b90-Profile Rough)
(FACE MILL B90)

N68G00G90 B90.
N69S650M03
N70 G90 G55 X4.3527 Y5.1874
N71 G43 H1 Z1.2087
N72 X4.0485 Y0.
N73 Z0.35
N74 Z0.25
N75 G01 Z0.08 F35.
N76 X3.2485 F8.
N77 X0.0003
N78 X-0.1997
N79 G00 Z0.35
N80 X4.0485
N81 Z0.18
N82 G01 Z0.01 F35.
N83 X3.2485 F8.
N84 X0.0003
N85 X-0.1997
N86 G00 Z0.35
N87 Z1.2087

(NEXT CUT - SAME TOOL)
(b90.-face mill b90-Profile Finish)
(FACE MILL B90)

N88G00G90 B90.
N89S650M03
N90 G90 G55 X4.0485 Y0.
N91 G43 H1 Z1.2087
N92 Z0.35
N93 Z0.25

Attach a file so we can look.....

[1234567]

ok here it is. thanks

[SBC Cycle]

I think the assumed behavior of a Machine Setup change is to reposition a clamp or otherwise stop the machine to jog away. At the very next feature, BobCAD returns to the position it was in before the Machine Setup change - then moves to the next feature. With my post I can see that the last XY value before the Machine Setup change was at X4.3527 Y5.1874 That's exactly where the tool is returning to after Block 16 (machine setup change) is called in the post.

In short, I believe this is expected behavior but I wouldn't mind hearing some input from other users. I don't use multiple Machine Setups very often.

[BurrMan]

He's using work offsets with no offsets defined in the machine setup. also coupled with setting the stock on the solid body, which defines the stock bounds data. I did a little calc and the Y5.1874 is roughly the tool radius center plus .8 leadin from the top Y corner of the defined stock bounds, against the stock!

But, I change the machine to my machine and the code posts out without that extra value.

Zip and Attach your post processor and zip your defined machine folder here also.. The work cords post out per the machine definition and some other settings in there. the machine definition has a defined "home" and also a parameter to post code from real or work coord zero values.

[BurrMan]

Could be just a fluke.....

[jrmach]

+.0004 and +.0004 improper tolerance




+.0000 and +.0000 Impossible

[BurrMan]

+.0004 and +.0004 improper tolerance




+.0000 and +.0000 Impossible

???

Thats just the default settings of the dim tool i used to show distances...

Care to elaborate?

[jrmach]

OIC

Just wondering why ?

0 is an impossibility

[BurrMan]

OIC

Just wondering why ?

0 is an impossibility

Cant be so critical on me mac. I dont know "why" lol

Could just untick tolerances for this porpoise...

[jrmach]

I thought it was part of the fluke,,lol

[BurrMan]

I thought it was part of the fluke,,lol

Oh, hahahaaaa!

The "fluke" was me not sure if those dimmed numbers "adding up to the value we are speaking about" is actually what's happening, or just a coincidence, with something else as the explanation...

Need to work off HIS machine and post to verify.

Glad we got that cleared up! lol

[1234567]

cutter comp is also starting in the wrong position in y axis. have never had these problems till switching to v-29.
if you run system comp and cutter comp at the same time it works. i've never had to have both checked to have it code cutter comp correctly

[1234567]

I think the assumed behavior of a Machine Setup change is to reposition a clamp or otherwise stop the machine to jog away. At the very next feature, BobCAD returns to the position it was in before the Machine Setup change - then moves to the next feature. With my post I can see that the last XY value before the Machine Setup change was at X4.3527 Y5.1874 That's exactly where the tool is returning to after Block 16 (machine setup change) is called in the post.

In short, I believe this is expected behavior but I wouldn't mind hearing some input from other users. I don't use multiple Machine Setups very often.

16. Machine Setup Change
N,"G28 G91 Z0."

16 sends the machine home

[1234567]

He's using work offsets with no offsets defined in the machine setup. also coupled with setting the stock on the solid body, which defines the stock bounds data. I did a little calc and the Y5.1874 is roughly the tool radius center plus .8 leadin from the top Y corner of the defined stock bounds, against the stock!

But, I change the machine to my machine and the code posts out without that extra value.

Zip and Attach your post processor and zip your defined machine folder here also.. The work cords post out per the machine definition and some other settings in there. the machine definition has a defined "home" and also a parameter to post code from real or work coord zero values.

i defined the work offset in the machine set up and i still get odd y axis numbers on the rough cut. i have been doing the same work flow since v23.

[1234567]

I get the same results. even with a v29 post processor that came with the package. I'm really starting to think this version is very buggy. even my center drill goes to the wrong spot but the drill after is fine. this is crazy !

[1234567]

ok when i post as individual tool that's when the problem happens . if i post per feature or individual set up i don't get the odd y axis starting point. This and the cutter comp issue are both bugs in my opinion. Al or anyone else from Bobcad want to chime in please.

[SBC Cycle]

Ok, now I'm seeing those odd numbers only I'm using Index Systems, not multiple Machine Setups. It still follows the behavior I described earlier: It is indexing, then moving to the last XY location from the previous Feature, then moving to the correct XY location for the current feature. See code sample for details, this is my post processor but the BobCAD post does the same.

C0. B90.
G00 G90 G254 X1.375 Y0.201 S4074
G43 Z7.525 H06
Z7.5
Z6.6
G01 Z6.45 F30.
Y0.101 F35.85
G02 X1.4453 Y0.0725 I0. J-0.101
G03 X1.5106 Y0.046 I0.0653 J0.0673
G01 X2.875
G02 X2.921 Y0. I0. J-0.046
G01 Y-0.9375
G02 X2.875 Y-0.9835 I-0.046 J0.
G01 X1.5106
G03 X1.4453 Y-1.01 I0. J-0.0938
G02 X1.375 Y-1.0385 I-0.0703 J0.0725
G01 Y-1.1385
G00 Z7.5
Z7.525
G255
(Safety index 0 - Retract Z Home)
G53 G90 G49 Z2.5

(NEXT CUT - SAME TOOL -  )
(OP4-Feature Mill Hole - 0.3125-Chamfer Mill)
(FEATURE MILL HOLE - 0.3125)

C180. B90.
G00 G90 G254 X1.375 Y-1.1385 S4074
G43 Z15.5 H06
X1.7953 Y0.4688
Z7.6
Z6.55
G01 Z6.441 F25.
Y0.3888 F22.41
G03 X1.8753 Y0.4688 I0. J0.08
G03 X1.75 Y0.594 I-0.1252 J0.
G03 X1.6248 Y0.4688 I0. J-0.1253
G03 X1.75 Y0.3435 I0.1253 J0.
G03 X1.8753 Y0.4688 I0. J0.1252
G03 X1.7953 Y0.5488 I-0.08 J0.
G01 Y0.4688
G00 Z7.6
X2.5453

[BurrMan]

ok when i post as individual tool that's when the problem happens . if i post per feature or individual set up i don't get the odd y axis starting point. This and the cutter comp issue are both bugs in my opinion. Al or anyone else from Bobcad want to chime in please.

The first line is a "real machine" coordinate move.

Zip and attach your machine folder and post processor (i'll use the same bbcd you already attached, unless you have another) and i'll make a video and explain it.

""""I never had this problem with v23"""""

V23 didnt work off of actual stock or have actual machine and work offset settings that affect how code is produced. V29 is becoming robust, which will need attention the older systems didnt.

Bug? I have an idea where there may be one. It is in regards to bounds data being calculated on solid bodies, and that method transfering to the system calculating that on stock definitions and/or the defined machines solid body definitions, and code outputing with the bounds definition.

I would like to report on this to bobcad, but need your help in defining the report properly (the code that comes out being wrong etc..)

This will be a perfect example if you want to play. SBC could be a good resource on this.

[SBC Cycle]

You are absolutely right Burr, the Machine Definition and post are intricately tied together now. I have an unusual MD for sure. My machine is a Table-Table setup (C rotary on B tilt axis). Mine is setup for "real world" machine simulation and the MD XYZ "zero" is set to the home position of my machine. If I use accurate work offset settings, the simulation is correct (workpiece is appropriately translated so that the move list in Sim matches my G53 machine coordinates - even when I'm not on the center of the table). However, before I post I must reset my work offset postion to the B axis centerpoint defined in the MD in order for the code to come out correctly.

I'm not sure if my workflow is 100% the way it was intended but it works beautifully and the Simulation is deadly accurate - so far I've not had a collision that Simulation didn't catch first. Not bad for my 4 axis standard software. But something is behaving differently from V27 to V29. I would have to recreate my file in V27 to verify but there's a lot of variables here - especially with the new posting engine.

I will try my best to play along. So far it's just weird output and a few extra moves that shouldn't be there. I'd like to know if it's my workflow causing it.