TRIB-GRIP BOOSTS GRIP BETWEEN TOOL HOLDERS & TOOLS LIKE DRILLS, MILLS, REAMERS, ROTARY SAW BLADES etc..

Application Note 10

An increase in dry friction will improve grip and so reduces the risk of slip on rotary cutting tools held within collet chucks and most other friction grip tool holders.

Conditioning the shank of a parallel rotary tool (like a drill) by rubbing it with our patented TRIB-TOOL™ before the shank is mounted will enhance the frictional grip between tool and holder, in some cases doubling the regular "torque" and "pull down" resistance. The same technique also improves the coupling of tapered tool stems.

As the shank is rubbed with the Trib-Tool it scrapes the surface clean by mild abrasive action and simultaneously releases trace amounts of a conditioning chemical agent. The agent combines with a new oxide layer as it forms after cleaning. The chemical treatment appears virtually dry, the rubbing consisting of a few strokes sufficient to shine the surface. The dry application ensures the friction enhancing chemical does not affect the chuck mechanism.

Rotary cutter machine tools use one of several standard quick change tapered tool holders that provide precision location and coupling onto the drive spindle. A second frictional coupling device within these tool holders actually grips the tools such as a collet chuck (shown below), or some sort of side clamping device with a positive location key, a Morse taper or more recently an inter-changeable shrink fit sleeve. In all cases, except the case with positive key location, the ultimate grip which couples the drive torque to the cutter depends on dry friction between two snug fitting surfaces held together by externally applied pressure. Trib-Tools increase the dry friction of these couplings.

The improved grip enables the use of shorter collets. For example it extends the safe use of the Bridgeport R8 with reduced risk of pull down, thereby taking full advantage of the minimal distance between the cutter face and head bearing which improves cut quality.

The cross hatched area shows where the drill shank was rubbed with the pad to condition it. On a different scale the drill is shown below in a sectional view of a typical collet chuck commonly used in automatic tool changers.

for more information email: info8@tribtech.com

The TribTech name derives from "tribos" - Greek for 'rubbing'. 'TribTech' is a trade name used by Ball Burnishing Machine Tools Ltd. of 12 Brookmans Av. Hatfield, Herts. AL9 7QJ. United Kingdom;  Company Reg. No. 1408807, VAT Reg. No. 421 6210 04; a knowledge based company that develops, patents and licenses technology. All rights reserved by Ball Burnishing Machine Tools Ltd. Last modified: May 01, 2008 copyright © 1999/2008. The information and data provided herein should be considered generally representative for the tools and technologies described. In all cases users should carefully evaluate the tools and technologies to determine their suitability for a particular purpose.