Honing guide assembly with camber roller

Abstract

A tool honing guide and an adjustable roller that contacts an abrasive surface during use of the guide facilitates formation of micro bevels, and the roller is barrel-shaped to facilitate honing a curved cutting arris.

1 . A tool honing guide for honing a tool, comprising 
 (a) a tool holder and    (b) a barrel-shaped roller attached to the tool holder to contact a planar surface while sliding the tool against an abrasive surface in order to maintain a desired angle between the tool and the abrasive surface while permitting the tool to be rocked side to side.    
   
   
       2 . The tool honing guide of  claim 1 , wherein the tool has a cutting arris defined by a bevel and a reference surface, wherein the guide has a reference surface for contact with the tool, and wherein the tool is positioned within the guide with contact between the tool reference surface and the guide reference surface.  
   
   
       3 . The tool honing guide of  claim 2 , wherein the tool is secured in the guide by drawing a tool securing bar toward the guide reference surface to capture the tool between the bar and the guide reference surface.  
   
   
       4 . The tool honing guide of  claim 2 , where at least a central portion of the bar has a generally triangular cross sectional shape.  
   
   
       5 . The tool honing guide of  claim 1 , further comprising a repositionable stop for establishing projection of the tool from the guide.  
   
   
       6 . The tool honing guide of  claim 1 , further comprising a mechanism for positioning the roller in at least two locations relative to the tool holder to facilitate formation on a tool of a primary bevel with the roller in one of the at least two locations and a micro bevel with the roller in another of the at least two locations.  
   
   
       7 . The tool honing guide of  claim 6 , wherein the mechanism positions the roller in the at least two locations by moving the position of an axle on which the roller rotates.  
   
   
       8 . The tool honing guide of  claim 7 , wherein the mechanism moves the position of the axle by rotating an eccentric shaft on which the axle is located between a first and a second rotational position.  
   
   
       9 . The tool honing guide of  claim 8 , wherein the rotation is accomplished by manipulating a knob attached to the eccentric shaft axially against a spring and rotationally between a first and a second detent in one of the knob or an associated guide structure.