lathe rough canned

[Columbo™]

Is there a way to get MC to output feedrate instead of rapid approach into the material in rough canned. I get a tool collision with stock alarm. I know you can adjust it in regular rough but I can't seem to find it in the canned rough.

 

Thanks

 

[ReDEyZZ]

In lead in/ lead out choose "add a line" .200" or whatever your extra stock is, that should get rid of it. hth

[Columbo™]

I have tried that, it still move in rapid

[Don S at Barefoot CNC South]

Try lead in extend countor length

[Columbo™]

I have also tried the extend contour length.

 

This works with no problem with regular lathe rough turn. The issue is with the canned rough. It seems like the leadins aren't working correctly in the lathe rough canned.

[Columbo™]

I have placed a file (LU25-337.mcx) onto the FTP site in the lathe directory. I would have added a link, but don't know how.

 

Thanks

[Don S at Barefoot CNC South]

stock setup,tool clearance,rapid moves, set it .100 or what ever

[Randy Morton @ Clem Industrial]

I don't get any errors with canned rough. Here is basic principle of what I do (all with stock defined);

 

Canned rough (facing) - I chain the face, then go to lead in/out, lead in, add line, define, and drag the line from the start point to above the top of the stock (or you can calculate it...)

Simlarly with the leadout, I add line, define, click on the last point of the chain, then drag down to center (or just past). Never fails.

 

Canned rough (od/id) - 2 parts to this one;

 

1. Turning with a chamfer lead in, just go to lead in and add .1 to the lead in amount, lead out...whatever needed.

 

2. Turning with a radius lead in, go to lead in/out, lead in, disable extend start of contour, add line, length = .1 angle = 0

 

Works like a hot darn... If you need a file example, just let me know and I can make one up real quick for ya, just shoot me an email and let me know.

 

Edit: Oh yeah, and primarily on everything I do, since MC rapid to the part on X and Z together, I always add a REF POINT on Z approach as 1" and disable the X. Then it goes from 1" away into first cut location...

 

HTH

[Columbo™]

I changed the rapid moves to .100 and visually there is no change and I still get the collision.

[Randy Morton @ Clem Industrial]

Can you send me the file?

[Columbo™]

Randy, I put it on the FTP site in the lathes directory with file name LU25-337.MCX

 

I have also tried what you decribed above with no good reslts.

[Randy Morton @ Clem Industrial]

I assume it's the collision with stock when it tries to rough out the undercut and the back undercut section of the part that you are talking about...?

 

If so, I don't know as much about Okuma as I would like, but I have never seen a canned cycle that can handle undercuts very well. Tyically it will crash (actually backcut) because the insert is not moving forward on consecutive steps down the undercut.

 

Is this where the problem is?

[Columbo™]

I get the collision on ALL approach moves. Our guys like the Okuma canned cycle. Depth of cut, amount to leave, etc. can be adjusted on the floor instead of reposting.

 

The main problem is the tool tapis into the part then the g1. If you look at the diameter behing the large collar diameter it rapids quite a bit into the piece. (not to cool with 13-8 heat treated).

[Randy Morton @ Clem Industrial]

Right. Such is what I was talking about. If Okuma canned cycles act the same as Fanuc canned cycles, I will always go back to the same point, plunge straight down (be it plunge using rapid or feed) and backcut with the tool until it reaches it's next depth and starts along the Z axis.

 

If you use rough, instead of canned rough, it actually feeds down the part, based on the tool angle, and does not backcut, thus not causing the crash alarm. I actually did this with your part and it worked just fine.

 

The alternative would be to notch out clearance for the tool to rapid down behind the collar (with a groove tool or similar) and then you would be home free.

 

I have the same problem here. All the guys want canned cycles, but in some instances (our machines all being fanuc controlled) they have to deal with a bit of long hand. Especially when it comes to undercutting like that.

[88Matt]

quote:

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I have placed a file (LU25-337.mcx) onto the FTP site in the lathe directory. I would have added a link, but don't know how.

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FYI, taken from the UBB code page on this site.

 

quote:

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If UBBCode™ is enabled in a forum, you do not need to use the

code to create a hyperlink. Simply type the complete URL in either of the following manners and the hyperlink will be created automatically:

Automatic hyperlinking (no UBBCode™ required). Simply type the URL, as in

or

 

 

Use the

code, in either of the following manners:

For automatic hyperlinking, notice that you can either use the complete http:// address or shorten it to the www domain. If the site domain does not begin with www, you must use the complete http:// address. Also, you may use https:// and ftp:// URL prefixes in auto-link mode (when UBBCode™ is on).

 

When using the

UBBCode™, a hyperlink to the URL will automatically be created. The link will open a new browser window when the user clicks on it. Note that the "http://" part of the URL is completely optional. Also note that you should NOT use quotation marks inside the

tag. Attempting to do so may cause an error message.

---

HTH

[Columbo™]

Thanks Randy, I had a feeling that the canned cycle wasn't working right. I guess that unless it is a simple tool path like rough turning a straight diameter the rough canned is useless.

 

I have noticed with the simple stuff MC canned cycle works, its the multiple steps, etc. where MC has the problem.

 

I remember in V9, you never saw the full canned motion in backplot, you only saw the finish pass.

 

Is it possible to see it that way again????? You never had a collision in previous versions.

 

Again thanks for the help and info.

[Columbo™]

Thanks Matt,

 

I understand how the URL codes with internet stuff, but how does it work with linking a file at the FTP site??