Inverted boring head

[BBprecise]

Got a part that I need to use a boring head to mill the outside of a post. I'm trying to create the tool in MC, but I can't seem to get it right. Anybody ever try this in MC?

 

It basically functions like an annular cutter, and could be drawn as such in MC, but MC doesn't seem to understand hollow tools. At least not for me.

 

What I usually do is just create the operation with a boring head (which I don't select when I verify program), then create another with an endmill to cut the part in verify.

[Guyinthedesert]

haven't done this in MC with a boring head, but I use trepan tools for o-ring grooves ( same concept) and it works just fine in verify. I use undefined tool, and draw it on a separate layer.

[crazy^millman]

As far as I know not possible since all milling tools that do drilling have been defined to always remove material for the whole shape. Been there done that for years if you want to see it correctly on the model then you need to make a dummy milling operation ghost it and go from there. If being transferred to a lathe then I would make up models with milling operation done like this so when it went to other operation I would not get bad models to get my job done. Something the resident troll forgets in his complaining and calling us ignorant. Doing your job and getting it done.

[BBprecise]

Did you draw it any special way? I've tried everything I can think of to represent the tool, but I can't seem to get MC to recognize the tool. The only difference is I create a separate file for the tool instead of another layer.

 

Thanks.

[BBprecise]

Probably should have mentioned that this is on a mill.

[Guyinthedesert]

see attached screen shots,

 

#2 is how I drew the tool, just a bar hanging out with the inside tip at 1.000 dia

 

#3 is how the tool looks in the tool manager. It's going to revolve whatever you draw, so it's not actually going to look like a boring bar

 

#1 is how the tool looks in verify. Notice it is hollow

 

#0 is how the part looks in verify, with a 1.000 dia boss left in the middle

 

Hope this helps

[BBprecise]

Guy, I see a couple small differences in the way I drew mine, but I don't think it's the problem. I'm gonna try to make it look more like yours to see if I get anything better.

 

Thanks for the help.

[specv]

Guyinthedesert is right on, we do this all the time.

[BBprecise]

Well, I'm getting closer. I can at least create the tool and see it in backplot. When I try to verify, I get an error about the 1st and last Y0 not equaling zero then the contour should not intersect itself.

 

Ugghh! I've created countless tools since 5.5 and I've never had such a hard time as I've had in X7.

[Guest]

... I get an error about the 1st and last Y0 not equaling zero then the contour should not intersect itself.

I go this error this morning in CATIA. The problem was with my geometry. I had a tiny overlapping piece of geometry. I found it, got rid of it and my part revolved. Maybe this may help.

[BBprecise]

No dice Foghorn. I trimmed that thing 10 ways to Sunday and it still won't verify. I've tried everything I can think of, even things that definitely shouldn't work with no success.

 

Thanks for the help guys.

[CJep]

No dice Foghorn. I trimmed that thing 10 ways to Sunday and it still won't verify. I've tried everything I can think of, even things that definitely shouldn't work with no success.

 

Thanks for the help guys.

 

all the geom is on the same level?

there are no overlapping entities?

there are no duplicate entities?

all the geom is at Z zero?

all geom is lines & arcs?

there is no other geom on the same level?

[Guyinthedesert]

What Cjep said, + if you have a center line, it has to be a center line.

 

I would select your chain and blank it. Then hit Fit to screen and delete everything. Then unblank your chain.

[BBprecise]

all the geom is on the same level? Yup

there are no overlapping entities? Nope

there are no duplicate entities? Nope

all the geom is at Z zero? Yup

all geom is lines & arcs? Yup

there is no other geom on the same level? Nope

 

I've tried un-hiding and un-blanking and nothing works. I did a statistics on it and everything matches to a T.

 

I'll try your method guy.

[BBprecise]

Well, tried your method Guy and there was nothing there. I am stumped.

 

Thanks for the help though.

[Guyinthedesert]

Do you have undefined selected as your tool type?

 

Can you post a screen shot of your geometry?

[BBprecise]

Here ya go Guy.

[Guyinthedesert]

Where it says "CUT" at the bottom, is that in the file? That will definitely screw you up.

[BBprecise]

That's the name of the level itself the geometry is on.

[Guyinthedesert]

Instead of using a custom file, try importing it and using a custom level. Delete the centerline too. I don't see anything wrong, though

[BBprecise]

Thought the same thing this morning (both putting it on a level inside part file and removing CL), but that didn't work either. I've attached my MC file for you to look at. Maybe you can get it to work.

_622 SCLNR B-BAR FOR BORING OD OF CWF-147.MCX-7

[CJep]

Instead of using a custom file, try importing it and using a custom level. Delete the centerline too. I don't see anything wrong, though

 

I'd kill the centerline as well,..

I usually start the custom geom on a level in the part file. Once the custom tool is up & running then I'll save it to a custom MCX. With the new tool database once it's saved into the library you don't "need" the MCX file.

 

Is the center line on Y zero?

[BBprecise]

The CL is at Y0.

 

Regardless of where I have my geometry, it crashes verify, yet it shows fine in backplot.

[Guyinthedesert]

Ok, this seems to be a bug in verify. It works fine in X5. In X7, it looks right in backplot, but it won't work in verify, UNLESS--

if you delete the inside radius and make it a sharp corner, all is well

[BBprecise]

I did not think to delete the radius. I'll send everything in to my reseller and have them forward it to CNC to get a fix going.

 

Beginning to wonder if I was loosing my mind.

 

Thanks all, especially you Guy.