[Machineit]

Hi All,

Just got my new to me lathe going. Hardinge CHNC 1, with Siemens 810T control.

I have the machine settings done in Lathe Machine Settings in the BobCAD folder and in Current Settings for the parts. I have enabled comments in both, but get no comments when posting and therefore when I open in Predator I can't simulate the part. I can only use verify and that is not a good enough simulation.

Anyone know how to get it to output the stock and tool comments for simulation?

Thanks---Mike

[Sowen]

See this knowledge base topic...
https://www.bobcad.com/support/knowledge-base

[Machineit]

Hum, not sure where or what specific area you wanted me to check out, seemed mostly Predator and I need info prior to going to Predator.

The code generated by the Cad-Cam Siemens 810T post processor has no code/comments for Predator to work with. The full output form the processor is below, no stock, tools etc.

It is not a Predator issue, it is the post. I have the proper post installed and such.

%0001;
G90 G54;
T01 D01 M08;
G92 S1000;
G97 S1000 M03;
G00 X-.4797 Z-2.;
G00 Z0.;
G01 X-.4997 Z-.01 F1.;
G01 Z-.0235;
G01 X-.45;
G01 Z-.0625;
G01 X-.4997;
G01 Z-.2625;
G01 X-.48;
G01 Z-1.5505;
G01 X-.4997;
G01 Z-1.7505;
G01 X-.45;
G01 Z-1.7895;
G01 X-.4997;
G01 Z-1.875;
G01 X-.437;
G01 Z-2.;
G00 X-.4797;
D0;
M30;

Where you pointing me to some other area?

Thanks---Mike

[SBC Cycle]

BobCAD-CAM SUPPORT TICKET SYSTEM - Knowledge Base

Try this link. If it doesn't work, check out the Predator Editor and Simulation ----> Predator Editor Header Post Lines

[SBC Cycle]

Hum, not sure where or what specific area you wanted me to check out, seemed mostly Predator and I need info prior to going to Predator.

The code generated by the Cad-Cam Siemens 810T post processor has no code/comments for Predator to work with. The full output form the processor is below, no stock, tools etc.

It is not a Predator issue, it is the post. I have the proper post installed and such.


Thanks---Mike

The link didn't work (can't say why). Click my link above and choose topic 3 Predator Editor Header Post Lines.

This should tell you all you need to know to edit your post to output the Predator Backplot parameters.

EDIT: Specifically, you need Blocks 110 and 111 for it to work in addition to the Header call out which should be somewhere in your post:

 "(BEGIN PREDATOR NC HEADER)"
    "(MCH_FILE=LATHE.MCH)"
    output_lathe_tool_list
    output_stock
    "(END PREDATOR NC HEADER)"
    " "

[Machineit]

Thanks, I'll try that. This post is from the days before Predator or even dinosaur's, so I guess it was not in it. It is from 1987 or earlier probably.

I guess I just figured it would be updated by now. Hey, it did say revised!!!!

Tied up with work now, so maybe this afternoon.

Thanks to both of you!!!!!

Oh, and I should have added that I'm running V-23.

mike

[Machineit]

Okay,

I added the header lines to the post and now I have the header. But, when I backplot it is goes straight through it in about half a second without showing anything on the screen.

I am using the Lathe template, but maybe something is set up wrong in it? Went through the info that has been posted, but found nothing to help--------so---Help!

Mike

Code as posted now(different file):

(BEGIN PREDATOR NC HEADER);
(MCH_FILE=LATHE.MCH);
(LTOOL T01 01 S1 O5. I.25 A80 C.0156 H0. D0. N3);
(SCYL S3 X0 Y0 Z-3. D1.3722 L3.);
(HCYL S3 X0 Y0 Z-3. D0. L3.);
(END PREDATOR NC HEADER);
;
%0001;
G90 G54;
T01 D01 M08;
G92 S1000;
G97 S1000 M04;
G00 X-1.3743 Z0.;
G01 X-1.1743 F.002;
G01 Z-2.6508;
G03 X-1.2469 Z-2.691 B1.9629;
G03 X-1.3743 Z-2.7581 B7.4499;
G01 Z-2.6581;
G00 Z0.;
G00 X-1.1743;
G01 X-.9743;
G01 Z-2.5167;
G03 X-1.0317 Z-2.562 B.4803;
G03 X-1.097 Z-2.605 B.9042;
G03 X-1.1743 Z-2.6508 B1.4487;
G01 Z-2.5508;
G00 Z0.;
G00 X-.9743;
G01 X-.7743;
G01 Z-2.0343;
G03 X-.8221 Z-2.2209 B4.3342;
G03 X-.8501 Z-2.3103 B7.0502;
G03 X-.8729 Z-2.3731 B1.8423;
G03 X-.9113 Z-2.4457 B.6075;
G03 X-.9743 Z-2.5167 B.4009;
G01 Z-2.4167;
G00 Z0.;
G00 X-.8931;
G01 X-.6931;
G01 Z-.0049;
G03 X-.6798 Z-.7216 B26.0506;
G03 X-.6821 Z-.901 B44.712;
G03 X-.6928 Z-1.2603 B28.2036;
G03 X-.7052 Z-1.4903 B20.433;
G03 X-.7236 Z-1.707 B10.9352;
G03 X-.7467 Z-1.8843 B7.0491;
G03 X-.7743 Z-2.0343 B5.3636;
G01 Z-1.9343;
G00 X-1.3763;
G00 Z5.;
G00 X10.;
G00 X-1.3543 Z0.;
G00 X-.8731;
G01 X-.6731 F.001;
G01 Z-.0049;
G03 X-.6597 Z-.7168 B26.0929;
G03 X-.6613 Z-.8502 B42.9059;
G03 X-.6727 Z-1.257 B30.8309;
G03 X-.6895 Z-1.5504 B18.2435;
G03 X-.7139 Z-1.795 B9.2645;
G03 X-.7604 Z-2.0618 B5.6454;
G03 X-.8037 Z-2.2265 B4.1162;
G03 X-.8314 Z-2.3142 B7.4959;
G03 X-.856 Z-2.38 B1.5301;
G03 X-.8793 Z-2.4268 B.6386;
G03 X-.9383 Z-2.5019 B.4402;
G03 X-.9532 Z-2.5157 B.2592;
G03 X-.9874 Z-2.5441 B.4342;
G03 X-1.054 Z-2.5905 B.6688;
G03 X-1.1829 Z-2.6669 B1.3899;
G03 X-1.3543 Z-2.7581 B3.6745;
G01 Z-2.6581;
G00 Z5.;
G00 X10.;
D0;
M30;

[BurrMan]

Create a sample bbcd file and attach it, along with your post processor here..........

[Machineit]

Create a sample bbcd file and attach it, along with your post processor here..........

As you asked for Burr. Good to hear from you. Sorry for being such a dork on this one.

Mike

[BurrMan]

Hi Mike,
Here's a rough draft we need to look at. It will backplot, but we should check a simple known program and expected backplot to be sure it is set correctly still. My old lathe post that backplots shows your cut as an internal cut on a cylinder. Your post shows it as just an external pass on the outside of the cylinder... Lets be sure before you move on.

So far, the changes to this to get it to backplot were:

Add an "M" to line 843.
Remove the ";" from line 759.

If this breaks your machines code, then you will have to run a seperate post for backplotting and one for posting to the machine, or, the rpt file will need to be modified to accept the end of each line charactor. We may need help with modifying the rpt file, if thats the way you want it...

[Machineit]

Hi Mike,
Here's a rough draft we need to look at. It will backplot, but we should check a simple known program and expected backplot to be sure it is set correctly still. My old lathe post that backplots shows your cut as an internal cut on a cylinder. Your post shows it as just an external pass on the outside of the cylinder... Lets be sure before you move on.

So far, the changes to this to get it to backplot were:

Add an "M" to line 843.
Remove the ";" from line 759.

If this breaks your machines code, then you will have to run a seperate post for backplotting and one for posting to the machine, or, the rpt file will need to be modified to accept the end of each line charactor. We may need help with modifying the rpt file, if thats the way you want it...

Hey Burr,

My lathe cuts on the front, so it is an external cut. Kinda like a tool room lathe might be.

The post now allows back plotting in Predator, but it is not an accurate plot. The finishing tool just rips all of the remaining stock off and makes a straight line, ignoring all of the G03's. You can check between verify and the back plot to see it.

Funny, I just tried something. I took the finishing pass from the old post and replaced the finishing pass on your modified post. When back plotted, it ran the roughing passes, but when it hit the finish pass it skipped through it as before. Then I copied both sets of code and compared them and they are identical! How could that happen?

Mike

[Machineit]

Okay, found something.

I did a simple drawing with no arc moves and it plotted fine.

Then I went and ran the previous drawing and I found that it ignored all of the arc moves. In the roughing part of the program there are only about two arc moves and single stepping through it, it does not move during the arc moves. Waits until the next Z move then proceeds.

The finishing pass is almost all arc moves and that is why it just moves in a straight line move to the final Z depth!!!!!

100 monkeys again.

Mike

[BurrMan]

Hi Mike,
I think the issue is a spline with a minimal definition is not working properly. Run "arc fit" on your spline and then create a contour out of it with a shift click, then reslect the geometry and try again...

Tell me if that solves it...

BTW: For the lathe module, try to always use "Contours" with your geometry selections.

[Machineit]

Burr,

Maybe you missed my other post, but I did what you said anyway.

I redid the shape and added radii and made it a contour, as you suggested. Post it and the code looks right but when backplotted, no moves take place when a arc move is called.

The issue is that no arc moves are performed. Only straight X and Z moves.

Attached for your inspection.

Mike

[BurrMan]

What are the "B" values that are output? Are you expecting to see "R" or "I and J" output with this file?

[BurrMan]

What are the "B" values that are output? Are you expecting to see "R" or "I and J" output with this file?

Ok, I think I got it. The B values are your radius output. If you set the posts line 242 to output incremental, then it backplots correctly.

So the reverse post processor for predator is not set to see "B" as a radius value (most likely set to "R")

I'll look at modifying that to backplot your output with B as the radius vaue.

[BurrMan]

Ok Mike,
So if you want to use "B" as your radius value, you can change your rpt file to use it...

I have set the LATHE machine in Predator which has the "Fanuc 16TA" rpl set to use.

You can find that file here:

C:\Program Files (x86)\Predator Software\Common Files\RPost 7.0\Lathe\Fanuc 16TA.rpl

Open that file with notepad and change the R to a B on this line of MoveR:

[BurrMan]

I "AM" the fourth monkey.........

[jrmach]

Do no Evil?????????????????ha,ha

[BurrMan]

Do no Evil?????????????????ha,ha

Well, that cant be me....

Here you go:

Hundredth monkey effect - Wikipedia, the free encyclopedia