We get a lot of questions regarding deburring techniques and how our tools can benefit your machining applications. It’s our goal to make our process more transparent for our clients. Deburring tools have a number of useful advantages. We want to show you how all the possibilities. If you don’t find the answer to your question below, or would like more information on any of our products and services, please contact us.
The primary function of these tools is to deburr the front, rear, or both sides of a drilled hole in a single operation. These tools are designed with a cutting blade which has an extended diameter greater than that of the hole to be deburred. As the tool is fed inward this blade engages the front side of the hole and the burrs are removed. Further feeding causes the blade to retract, against spring pressure, and collapse into a slot in the pilot. This allows the tool to pass through the hole. A radius located on the outermost surface of the blade prevents damage to the inside diameter of the hole. After passing completely through the hole the spring pressure returns the blade to it’s extended position. At this point the tool feed is reversed and the deburring process is repeated on the rear side of the hole as the tool is withdrawn.
Adjustment of the blade elevation changes the tension of the spring action, and affects the amount of chamfer that is cut at the openings of the hole.
By applying passive radial pressure to the Adjustment Screw, the Retention Screw prevents undesirable changes to the blade setting that is sometimes referred to as “self adjustment” . Please note that THIS IS NOT A LOCK SCREW, and does not need to be altered during normal operation. The tension setting of this screw is set at the factory and should only be “snugged” if the operator notices a lack of tension in the adjustment screw.
The assembly holder should last indefinitely if treated with care. This means never over tightening any of the screws, especially the pilot clamp screw.
Depending upon the diameter, pilots should last from two to several blade changes. Proper sizing and hole location are the key factors to long pilot life. A tool run in a CNC will last longer than one which is operated by hand.
Several variables will affect blade life. Material, burr size and the amount of chamfer cut, will be the determining factors. As a rule however, I tell my customers that sharp drills are less expensive than deburring tools.
The pilots utilized in the Micro line are all M-2 drill blanks, as are the A, B and C range modular tool pilots. D through G range modular tool pilots are made from hardened H-13 tool steel. AutoLock tool bodies are produced using pre heat treat 4140 which are case hardened with an Ion Nitride treatment.
The blades are produced from Rockwell 62-64, M-2 high speed steel.