rough pocket BAD

[Jaz]

I have an odd shaped part with pockets all over, varius height walls and different thickness floors, not a real complicated part. When I try to rough it with the Surface Rough Pocket toolpath it makes several moves straight across the part through walls, containment baounderies or whatever. I've been using this toolpath for this type of work since I discovered it in V9, is it screwed up in X2? or what am I missing somewhere (maybe a little box to check "Do not scrap part"). Also, is there some way to make Rough Pocket pick up and re-enter when it pockets out in a different area of a large odd-shaped pocket instead of slotting over to a new 'center'?

[Metalmuncher]

Set your retract above the part.

[Jaz]

Retract is above part and the toolpath does retract.

[gavetta]

I had that same problem in X when it first came out but it was fixed after mr1. I haven't installed X2 yet (waiting for update release) but you might want to send a zip to go to CNC's qc department. That's what I did before. Sure hope this isn't an issue again as I use that toolpath alot too.

[TKDBB]

I had that problem pop once or twice in V9. Usualy all I had to do was change the stepdown by a thou or two. Never did figure out why it did it. I learned to watch my Verify real close.

 

Mike

[Midwest]

Can you put your file on the FTP???

 

Also have you tried a search and see if anyone else has been having trouble??

[Jaz]

I'll try it.

[Jaz]

I did a search and did not find an answer, although I may have missed it. I may not put the file onto the FTP sight.

[Jaz]

Changing stepdown had no effect.

[Midwest]

quote:

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When I try to rough it with the Surface Rough Pocket toolpath it makes several moves straight across the part through walls

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Make sure all your surfaces are selected.

 

[Jaz]

All surfaces are selected (783 drive surfaces, 783 trimmed surfaces per Screen Statistics)

[Midwest]

quote:

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I may not put the file onto the FTP sight.

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Screen shot of part and maybe your tool path pages with the settings you are using.

 

[Midwest]

quote:

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(maybe a little box to check "Do not scrap part")

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[Jaz]

I'm sorry I can't give you a visual. Access to sights like photobucket is blocked here at work.

[Midwest]

Retract is set to absolute?? (+)number

 

Rough Parameters---------Plunge outside containment boundry is NOT checked???

 

How many boundries are you using???

 

 

Tool containment are you using Inside, Center, or outside???

 

 

[Jaz]

Retract is absolute above part - some retracts are good.

Plunge outside boundry is not checked

1 boundry, compensate inside, Additional Offset not checked.

Entry Helix, no checks in Entry options.

[Trevor Bailey]

Try using HIGHSPEED-AREA CLEARANCE and see if the retracts are better.

 

Do the retracts show in backplot/verify?

[Jaz]

The places that drive straight through stuff do show up in backplot and in verify. I have couldn't wait for an answer so I have already driven some other toolpaths. I may try Area Clearance and se if I like it better. But I'd still like to find an answer. I will turn it in to MasterCam later today.

[Jaz]

Toolpaths using Surface High Speed Rough are better anyway.

[Lee.]

Just a thought, but when it goes through your part, is it on Arc moves?

 

Lee.

[Jaz]

The moves are all linear from one pocket to another.

[TonyNanni@BNB]

are all surfaces normals pointing in the correct direction???

[Teh Bear without Brains kinda idiot]

mAY BE DUE TO BAD BOUNDARY

I had it once in ver8

TRY TO CHANGE YOUR CHAiN TOLERANCE to more accurate setting and run analize->contour to check it

Also helps split your chain to lines

[cadcam]

What is your Tololarence set for and what are you telling to leave for stock?

 

Also have you tried HST surface Rough Core?

[Jaz]

I have scrapped trying to make Pocket Rough work on this thing and am using HST Rough Area, which is working better anyway. I have tried everything you guys suggested to no avail. The only thing I did discover was that if I set the maximum depth cut higher the toolpath does not make the bad moves. I am assuming that one or more of the surfaces below a certain Z depth is 'bad' in some way (could be wrong normal but I'm disinclined to check 783 surfaces). I'm not going to waste any more time than I already have. Thanks for the suggestions.