Deburring Holes

One of the most unique yet simple tools I have ever come across in the metalworking world for deburring holes is the design made by E-Z Burr Tool Company in Plymouth, Michigan, USA. As I said, it is probably one of the simplest tooling designs yet it performs a very unique operation. The E-Z Burr Tool will deburr the front and the rear of a drilled hole on the top and BOTTOM or breakout side of the hole in one stroke. The tool runs just like a drill in that it is fed into the previously drilled hole and then withdrawn. No stopping of the spindle or dwelling is required. These tools come in several designs such as the Micro Series, HSS Series, Carbide Series and Combination Tools that generate the hole and deburr/chamfer it in one stroke. (The HSS Series is shown in the top picture and the Carbide Series is shown in the bottom picture.)




How does it work?

As the rotating tool is fed into the work piece, the extended blade or carbide insert cuts and deburrs the front burr as the blade/insert is collapsing under the pressure of being fed into the hole. The tool can be adjusted to make nearly any chamfer size you want - more about that later.

Once the insert/blade is completely collapsed inside the hole the tool is able to continue down through the hole to reach the backside or the breakout side. The top of the hss blade or carbide insert does touch the ID of the hole but the blade/insert is crowned and polished so as to not mark the bore while being fed through.

Once the tool has reached the backside of the hole and has cleared the hole, the blade/insert "springs" back out of the arbor. (There are not any actual springs in the E-Z Burr Tool) The feed is reversed, yes you need the capability to fed on the return stroke, and the rear burr is removed as the tool is withdrawn.

Easy to Use in All Machines.

E-Z Burr Tools are easy to maintain, set up is quick and straightforward. The tools can be used in any number of machines such as CNC Machining Centers, Transfer Lines and Dial Machines. They can even be used in a drill press or by hand in a drill motor. Think about employees twisting and turning trying to use those deburring knives and similar tools to deburr when they could be using the E-Z Burr and reducing stress and fatigue while increasing production and consistency. No special skills are required.

Patented Features of the Tools.

All E-Z Burr product lines utilize the same and exclusive patents except for the Micro Series. They share the same design features such as solid arbor design, easy blade/insert adjustment, quick blade/insert replacement and unique spring type flex without any springs.

Solid Arbor:

Other tools on the market use a hollow arbor or tuning fork style arbors. By contrast the E-Z Burr uses a solid arbor that offers a tougher, more rigid tool that maximizes cutting power and lengthens tool life.

Easy Adjustability:

As mentioned earlier the chamfer size of the E-Z Burr can be adjusted. With a simple turn of an allen wrench used in the adjusting screw located in the side of the arbor, cutting pressure can be adjusted from extreme low to extreme high. This pressure is what designates the size of the chamfer. Nothing else changes in terms of program and speeds and feeds to change chamfer size. Low-break Loctite is used to maintain torque tension to assure part to part consistency.

Changing the HSS Blade or Carbide Insert:

The blade or insert unlock with a quick 1/8 turn (not 1/8" but rather 1/8 diameter) counterclockwise of the locking screw. Once in the unlocked position, the blade/insert can be removed and a new or re-sharpened one placed back into the arbor. Lock the blade or insert back into place with a 1/8 turn clockwise of the locking screw.

For more on E-Z Burr Deburring and Chamfering Tools or to locate a distributor near you, please visit E-Z Burr Tool Company.

To purchase now at the lowest prices available or for more information on E-Z Burr Products please visit www.toolinghouse.com.