I am working on automating our deburring process. I have been testing surface brushes with much sucess. I am working at deburring holes now. We have alot of cross hole drilling with all holes being under 1/4". We drill some holes over 20* dia deep. Most hole deburring brushes do not work good for blind cross holes as well work on diameters below 1/4". You can get micro brushes in 500, 600 & 1000 grit which will not work on my parts. These parts are made from aluminum. I have tried contacting extrude hone and they have not returned my emails? I guess they don't need money. My guestion is, what methods have you used to deburr parts other than manual removal.

For hydraulic valve bodies with holes similar to what you describe, we used thermal deburring. Parts are put in a secure chamber, filled with natural gas and ignited. The instantaneous heat sinks into the burrs and burns them off.

This was outsourced to a contract deburring company.

Dick Z

I saw that method on the web. How costly is it?

It's been a while. I think the freight cost more than the deburring cost. I'm trying to remember the company name, but I'm having a "Senior Moment".

Dick Z

Add: Thermo or Thermal Deburr? I remember it being in Illinois.

You might also consider chemical deburring.

I've been using Orbitools for a few years now and while expensive, they work in cross-drilled holes better than I would have EVER believed possible. Getting all the parameters in your machine is the tricky part, or course, but once dialed-in, they work wonders. We had a part where 4 holes intersected, we ran the orbitool in there and in the end every one of the complex surfaces had a perfect and smooth radius.

http://www.jwdone.com/orbitool.html

Perhaps you're looking for something like these Cogsdill tools? Works very well for my apps.
http://www.cogsdillenterprises.com/

You should take a look at this site.

http://www.weilercorp.com/

This company offers two deburring services for smaller parts. But they are relatively cheap to do work with. They also have hi-quality results. Take a look...

Deburring Site (http://www.nitrofreeze.com)

I have been working with Weiler on this issue. I have the flat surface deburring working good. The issue I am having now is in deburring holes. I do deep drilling in small diameters. I have holes from .234 dia to .040 dia. I have tested some Weiler brushes ".250" for my .234 dia holes. They work but wear to quickly? They as well as others do not make course enough brushes in diameters smaller than .250? I am going to be forced to buy my next type of deburring to as that the company that sells them does not support the type of deburring that I will be doing with their tool. I am going to test flexhones for my holes. They will not support this because I have holes that are threaded at the top of the hole. I'm thinking that if I make a custom cycle I can feed down to below the thread depth at the pitch of the thread. When I get below the thread I will change to the proper speed and feed for the tool?

I think cryogenic deburring would work depending on the material. Are your burrs at the holes? If so you need a process that can remove the burrs in the holes and leave the threads alone. Cryogenic deburring would do that for you. But then again it won't work on the big stuff.

Brush deburring works on a lot of metals. I have a contact at a facility near Cleveland that sells brush deburring equipment. He has access to nylon and stainless steel brushes. If you are interested, let me know.