Cutter compensation..

[driftmaster]

Hey again.

Well, i was working with V.9.0. But now im trying to learn X3 instead.
Post processor is working like i want with v9.0, but with X3 cutter compensation is a mess.

I used the post update thing in X3 but something is wrong with the post i think..
You will see when you try posting program =)

I made a test file for you to take a look at.Also included posted programs in both v9.0 and X3, here you can see what goes wrong..
Same lead/lead out in v9.0 and X3..

The machine is a Horizontal Mori with Fanuc control..

Originally Posted by Superman OK, you're working with V9 can you make a test Mcam file with a circle and a line and create operations to profile both using what you think is correct lead in and out ( so it looks good on screen ) -create a ZIP folder and place this Mcam file and the post you're using -attach this ZIP folder to your next posting so I can have a look Your on a FANUC machine , 3 axis ? I think the X-1000 is set in the post , but I'll have a look first for you I should be able to compare it to one of our V9 posts Steve

[driftmaster]

Hello "Superman"

Have you had any time over to check what could be causing the problem?

Have a nice day

[Superman]

Had a look at your X3 stuff.

before modifying the post, have a look at the control settings for your machine, cutter comp section where comp is cancelled after retracting from the operation. This may solve a couple of your problems.

on the top toolbar <settings> <edit machine def.> <edit control>
this opens a dialog for this machines defaults, files, posting targets, etc. , one of the items is that cutter comp.
have a look at those settings

This is probably also the area that is controlling your X-1000 . For this can also come from the "Misc. Intergers", "Home Position" or "Reference Point" buttons, we'll look closer after getting comp running OK


Your output using comp is a little strange, it does not follow exactly what is happening on-screen, and if comp is cancelled after retracting, and you have a large comp value then the point that the tool goes to before retracting is not the point on-screen. This can be a situation causing an un-explained crunch.

Also look carefully at your lead-outs if you have one that puts the tool into the contour, sometimes it will omit the lead-out and also miss putting in the G40 (eg doing an inside circle and the lead-out is a tangent line instead of perpendicular line - tool will stop on the end of the contour and retract there )


Your post is a little different to mine in the area of cutter comp
Does your machine take-up and cancel comp on arcs ?
or does it need a line for comp to work ?
Fanucs and Okumas need lines, I've got my post to output a warning if comps start or finish with an arc

[driftmaster]

Heya there.

Thanks for checking in out and taking your time..

I have been messing with the "machine & control def" with to sucess at all =(..Hmm, i will try more, but close to giving up now..

Machine i'm using cant take up cutter comp. in arcs.
It's just like you said, a line thats needed..

Yeah, i'm aware of the problem when typing large comp value..
But hey, that's what im used to not the best way but it works..

Just gotta get the damn thing to post the right stuff.
Im pretty sure something goes wrong when updating the post from v9.0 to x3, just dont know what..

[driftmaster]

Superman.

I've been messing with the settings and so on for a couple of days now..
I just don't get it to work..
Don't know what to change in the post, it's all too confusing for my brain =).

Would be great if you could have a look at it once again and see if you can find the problem..
Sorry for being such a pain

[Superman]

Had a closer look a the post header you put up for the X3 example

This post was originally set-up for V7 (1999= last mod date ) and has quite a few mods up to X2, especially in the cutter comp area. The mods also make it a bit harder to follow. Look for "ppost$" near the post end as an indication

There are also changes to variable names that can create problems after X2.

You may be getting a post upgraded each time, which is not all bad, but you may be losing a lot of functionallity that is available in X3, you are actually limited by the age of your post.

Do you have a reseller that could do a current post for you ?
You can also download the MpmasterX3 post from IHS(-link) and actually compare the outputs in the comp area. I think you would be more happier with a new post version instead of an old one dressed up.

[driftmaster]

Hmm, thats worse then i thought then..
But hey, thanks for having a look at it atleast.

I could use the "generic fanuc" post if i just got couple of things added to it. But i guess that's adding custom stuff in the post too..=(
I would like to have the look-a-head function added so its read in when tool is changed (g8 p1)and g8 p0 before next tool is changed..
And also m11, b0, m10 on all look changes too..

Ofcourse this would be no problems for reseller, but they are damn pricey and im a cheap bastard =)

But thanks anyway!!