Shaping apparatus for saw sharpening wheel

Abstract

A saw sharpening apparatus having an abrasive wheel for sharpening saw blades, and including a tool for shaping and dressing the abrasive wheel. The abrasive wheel shaping tool is operable to contact the peripheral surface of the abrasive wheel and shape the peripheral surface into a predetermined profile. The shaping tool is operable to move radially and axially relative to the abrasive wheel. A controller in communication with the shaping tool is programmed to urge the shaping tool against the abrasive wheel and move the shaping tool across the peripheral surface in a predetermined pattern.

What is claimed is:  
     
         1 . In a saw sharpening apparatus having a driven abrasive wheel with a peripheral surface, an apparatus for supporting a saw blade in a predetermined position relative to the saw blade, an apparatus for advancing the saw blade into engagement with the abrasive wheel, and the abrasive wheel operable to sharpen the saw blade, the improvement comprising: 
 an abrasive wheel shaping tool mounted on the saw sharpening apparatus and operable to contact the peripheral surface of the abrasive wheel and shape the peripheral surface into a predetermined profile;    the shaping tool operable to move radially and axially relative to the abrasive wheel; and,    a controller in communication with the shaping tool and programmed to urge the shaping tool against the abrasive wheel and move the shaping tool across the peripheral surface in a predetermined pattern.    
     
     
         2 . A saw sharpening apparatus according to  claim 1  further comprising: 
 the shaping tool comprising a pivotable arm and a cutting tool mounted on the pivotable arm;  
 a first servo assembly connected to the pivotable member and operable to move the shaping tool radially relative to the abrasive wheel; and,  
 a second servo assembly connected to the pivotable member and operable to move the shaping tool axially relative to the abrasive wheel.  
 
     
     
         3 . A saw sharpening apparatus according to  claim 2  further comprising the shaping tool being movable radially and transversely relative to the abrasive wheel peripheral surface simultaneously responsive to at least one signal from the controller.  
     
     
         4 . A saw sharpening apparatus according to  claim 2  further comprising the shaping tool being movable axially in an arc.  
     
     
         5 . A saw sharpening apparatus according to  claim 4  further comprising the pivotable arm being connected to the second servo assembly and movable through an arc.