Grinding machine and a grinding jig therefore

Abstract

A grinding jig for use in the grinding of a straight edge woodworking tool on the peripheral surface of a rotating grindstone in a grinding machine. The grinding machine has a cylindrical support bar parallel with the rotation axis of the grindstone. The jig includes a base, which is parallel with the support bar and is intended for slidable and rotational mounting on the support bar, and a clamp, wherein the tool is attached between the base and the clamp. The grinding jig has a support surface on the base for supporting the face of the tool opposite its bevel.

1 . A grinding machine having a grinding jig for grinding a straight edge tool on a peripheral surface of a rotating grindstone in the grinding machine, comprising a cylindrical support bar parallel to a rotation axis of the grindstone, wherein the grinding jig comprises a base, which is parallel with the support bar and is slidably and rotationally mounted on the support bar, a clamp arranged in relation to the base so as to receive a straight edge tool therebetween, and a support surface on a side of the base facing the grindstone and parallel therewith for supporting the tool, when received between the base and the clamp, by a flat machined side of the tool or face opposite a bevel of the tool. 
   
   
       2 . The grinding machine according to  claim 1 , wherein the clamp is arranged between the base and the support bar. 
   
   
       3 . The grinding machine according to  claim 1 , wherein the base includes a shoulder for the tool to engage at one end of the support surface, said shoulder being perpendicular to the support bar. 
   
   
       4 . The grinding machine according to  claim 1 , wherein a clamping surface of the clamp is longitudinally beveled. 
   
   
       5 . The grinding machine according to  claim 1 , wherein a security stop is provided on the cylindrical support bar at one or both sides of the grinding jig for preventing the tool from laterally leaving the grindstone. 
   
   
       6 . The grinding jig for a grinding machine according to  claim 1 . 
   
   
       7 . The grinding jig for a grinding machine according to  claim 2 . 
   
   
       8 . The grinding jig for a grinding machine according to  claim 3 . 
   
   
       9 . The grinding jig for a grinding machine according to  claim 4 . 
   
   
       10 . The grinding jig for a grinding machine according to  claim 5 .