Internal Threading and Boring Tips

[Anonymous]

Have a few questions regarding the internal threading and boring option. I need to bore then internally thread a fairly small part.

1. I have my part modeled, and I have it setup to Face, Profile then deep peck drill. Next I want to bore to an inner diameter of about .3 

After I finish the bore, I would like to create some internal threads. I have a Micro Internal threading tool, which requires a min. diameter of .24

When I attempt to setup a tool, there is a limited amount of threading tools in the library. The threading tool uses a 06IR Insert I would like to know how to set this up. The boring bar Insert I would like to use will be a CDCD type. This is a micro boring bar which requires a min. of .18 diameter.  I did search the forum and see some other having issues. Obvioulsy some of my issues, since the inner diamerter of the part is so small, none of the pre defined tools work right for simulation. This will be a trick part to thread, as my retract will be marginal since the ID of my tube is so small. 

Keep in mind, yes I know this is going to be a tine thread, and I wont be able to thread very deep, thats fine. This is just for a threaded end cap and shallow threads will be fine. 

I was able to get the outside threaded today after a whole day of messing around. I will be doing this in 6061, Brass and Copper

Links to the Tools I want to use for this. I guess if all else fails, I would have to learn how to hand code this, and I can either use a G76 or G92 Canned Cycle. I have a Fanuc 21i-T control on a Gang Tool Lathe

http://www.travers.com/indexable-carbide-insert/p/24-570-858/

http://www.travers.com/a-series-carbide-boring-bar/p/24-570-770/

http://www.shars.com/products/indexable-cutting/threading-holders/internal-ultra-miniature-threading...

(Yes, I know cheap Shars, but Its a micro set, and I don't want to break expensive stuff figuring this out)

Anyhelp would be appreciated, been spending lots of hours learning Fusion, and this forum has been a great resource for me.

[HughesTooling]

Here's a file with something similar to what you've described, it's in mm hope you can decipher OK. You can't define the tool holder to look like the one's you're using, what you can define is pretty basic, you'll have to use your imagination a bit.

The boring bar you linked to has the tip in an odd orientation, I can't see any way to set up quite like that.

Are you sure you want that orientation and not the more standard like I've set up in the file?

The file attached does show some collitions in the simulation, I think they're just because the holders aren't quite right.

Mark

[Anonymous]

Well upon further inspection, I would have to agree. I didn't realize the insert sat so wierd on the boring bar holder. 

Loks like this might be a better option for me, since it only requires a .175 ID 

http://www.shars.com/products/indexable-cutting/boring-bar/5-32-x-3-1-2-carbide-boring-bar-for-cdhb-...

I am going to download that file and open it up. I assume I just open that file VIA Fusion 360?

[HughesTooling]

You can import files using New Design From File on the file menu.

Mark

[Anonymous]

@Anonymous

Very cool. Thanks for taking the time and creating that file. Definitly helps me out more then you know 🙂

Once I open the file inside fusion, even though its in MM - Can't I just change it to inches?  then make my edits to the size I would need and generate new tool paths?

[HughesTooling]

The file units are easy to change but the tools will still be in mm. Just checked, it looks like you can edit the tools in the tool library quite easily as well.

Mark