Lathe gouge sharpening tool

Abstract

A sharpening guide for use with a chisel and a grinding wheel comprising a rod having a first end and a second end, a pivot assembly carried by the first end, a tool clamp attached to the pivot assembly and movable relative to the rod and adapted to retain the chisel, a base, and a base pivot for movably mounting the rod relative to the base whereby the base pivot is adapted to be mounted adjacent the grinding wheel. A method of sharpening a tool comprising the steps of locating a tool within a tool clamp, rotating the tool clamp toward a grinding wheel about a first axis until the tool is in contact with a grinding wheel, and rotating the tool clamp about a second axis to move the tool across the grinding wheel rotationally.

1 . A sharpening guide for use with a chisel and a grinding wheel comprising:
 a rod having a first end and a second end;   a pivot assembly carried by the first end;   a tool clamp attached to the pivot assembly and movable relative to the rod and adapted to retain the chisel;   a base; and,   a base pivot for movably mounting the rod relative to the base whereby the base pivot is adapted to be mounted adjacent the grinding wheel.   
   
   
       2 . The sharpening guide as defined in  claim 1  further comprising;
 a housing formed with a through hole for receiving the rod whereby the rod is rotatable relative to the housing; and   whereby the housing is positioned intermediate the first and second end of the rod.   
   
   
       3 . The sharpening guide as defined in  claim 2  further comprising a least one bearing carried by the housing adjacent the hole whereby rotation of the rod causes movement of the bearing 
   
   
       4 . The sharpening guide as defined in  claim 2  further comprising:
 a pivot flange extending outwardly from the base; and,   a pivot pin attached to the pivot flange and to the housing for providing pivotal movement between the base and the housing.   
   
   
       5 . The sharpening guide as defined in  claim 4  wherein the pivot flange includes a pair of flanges for mounting the housing therebetween. 
   
   
       6 . The sharpening guide as defined in  claim 2  further comprising a height adjuster attachable to the rod for operatively contacting the housing to prevent continued movement thereof in one direction. 
   
   
       7 . The sharpening guide as defined in  claim 1  further comprising:
 a guide cam having an outer surface;   a guide positioned adjacent the outer surface whereby one of the guide and guide cam is mounted on the rod; and   whereby rotation of the rod causes the guide cam to move over the guide.   
   
   
       8 . The sharpening guide as defined in  claim 7  in which movement of the guide cam relative to the guide is rotational. 
   
   
       9 . The sharpening guide as defined in  claim 8  in which the guide cam is mounted on the rod and guide is carried by the base. 
   
   
       10 . The sharpening guide as defined in  claim 9  in which the guide cam is movably mounted on the rod above the housing. 
   
   
       11 . The sharpening guide as defined in  claim 10  in which the outer surface has a cross sectional configuration, and in which the cross sectional configuration is adapted to be similar to the chisel. 
   
   
       12 . The sharpening guide as defined in  claim 1  further comprising a tool alignment carried by the tool clamp. 
   
   
       13 . The sharpening guide as defined in  claim 1  in which the base pivot has a first axis and the pivot assembly has a second axis and in the rod has a third axis, and in which the third axis is perpendicular to at least one of the first axis and second axis. 
   
   
       14 . The sharpening guide as defined in  claim 13  in which the first axis and the second axis are parallel. 
   
   
       15 . The sharpening guide as defined in  claim 14  wherein rotation of the rod around the third axis causes axial rotation of the tool clamp. 
   
   
       16 . The sharpening guide as defined in  claim 15  wherein rotation of the rod around the third axis causes rotation of the housing around the second axis. 
   
   
       17 . A method of sharpening a tool comprising the steps of:
 locating a tool within a tool clamp;   rotating the tool clamp toward a grinding wheel about a first axis until the tool is in contact with a grinding wheel; and,   rotating the tool clamp about a second axis to move the tool across the grinding wheel rotationally.   
   
   
       18 . The method as defined in  claim 17  comprising the further steps of rotating the tool clamp about a third axis parallel to the first axis. 
   
   
       19 . The method as defined in  claim 18  comprising the further steps of:
 moving a guide cam into contact with a guide; and,   maintaining the contact between the guide cam and guide while the rod is rotated about the first axis.   
   
   
       20 . The method as defined in  claim 19  comprising the further step of choosing a guide cam that is complimentary shaped to the profile of the tool. 
   
   
       21 . A sharpening guide for use with a chisel and a grinding wheel comprising:
 a rod having a first end and a second end;   a tool clamp attached to the rod first end;   a base having a receiving flange to secure the rod second end; and,   wherein the rod rotates relative to the base.   
   
   
       22 . The sharpening guide of  claim 21  wherein the tool clamp is adjustable relative to the rod. 
   
   
       23 . The sharpening guide of  claim 21  wherein the base supports the rod on at least two locations of the rod. 
   
   
       24 . The sharpening guide of  claim 21  wherein the rod is pivotable relative to the base. 
   
   
       25 . The sharpening guide of  claim 17  further comprising the step of adjusting the tool clamp relative to a third axis prior to the step of rotating the tool clamp toward the grinding wheel.