Fixed-angle sharpener and sharpening method

Abstract

A fixed-angle sharpener which includes a supporting body, an angle block, an angle wheel, an angle fixing assembly and a sharpening mechanism. The angle block is mounted to the supporting body, the angle block can rotate and move up and down, the angle wheel is connected to the angle block, the angle wheel can rotate, and the angle wheel is fixed by the angle fixing assembly after rotating for angle adjustment. The sharpening mechanism includes a sharpening bar assembly, and the sharpening bar assembly is connected with the angle wheel. When the cutter is sharpened by using the sharpener, the angle of the sharpening bar assembly is adjusted and fixed, the angle block can slide up and down during the sharpening process, and in this way, a consistent sharpening angle can be achieved by moving up and down as a whole regardless of a shape of the cutter.

What is claimed is: 
     
         1 . A fixed-angle sharpener, comprising:
 a supporting body;   an angle adjusting mechanism which comprises an angle block, an angle wheel and an angle fixing assembly, the angle block is mounted to the supporting body, the angle block is capable of rotating and moving up and down, the angle wheel is connected to the angle block, the angle wheel is capable of rotating, and the angle wheel is fixed by the angle fixing assembly after rotating for angle adjustment; and   a sharpening mechanism which comprises a sharpening bar assembly, and the sharpening bar assembly is connected with the angle wheel; wherein   in sharpening, the angle wheel is rotated to adjust an angle of the sharpening bar assembly and the angle is fixed after adjustment is completed; and in a sharpening process, the angle block moves up and down on the supporting body to ensure a consistent sharpening angle.   
     
     
         2 . The fixed-angle sharpener according to  claim 1 , wherein the angle fixing assembly comprises an angle hole cover plate and an angle pin, the angle hole cover plate is provided with a plurality of angle holes, and the angle wheel is provided with a plurality of positioning holes, and the angle pin is inserted into the angle holes and the positioning holes to realize fixing of an angle of the angle wheel. 
     
     
         3 . The fixed-angle sharpener according to  claim 2 , wherein the angle fixing assembly further comprises an angle locking member, and the angle locking member is capable of abutting against the angle wheel, and after the angle of the angle wheel is adjusted, the angle locking member abuts against the angle wheel to realize the fixing. 
     
     
         4 . The fixed-angle sharpener according to  claim 3 , wherein the angle locking member is a locking screw, there are at least two groups of locking screws provided, and the locking screws are mounted to the angle block. 
     
     
         5 . The fixed-angle sharpener according to  claim 4 , wherein the supporting body is a shaft body, and the angle block is capable of moving up and down along the shaft body and rotating around the shaft body. 
     
     
         6 . The fixed-angle sharpener according to  claim 3 , wherein the sharpening bar assembly is capable of moving along an axial direction of the sharpening bar assembly on the angle wheel. 
     
     
         7 . The fixed-angle sharpener according to  claim 6 , wherein the supporting body is a shaft body, and the angle block is capable of moving up and down along the shaft body and rotating around the shaft body. 
     
     
         8 . The fixed-angle sharpener according to  claim 6 , wherein the fixed-angle sharpener further comprises a height adjustment supporting assembly, and the height adjustment supporting assembly is configured for supporting the angle block to keep a lowest point of the angle block at a height position. 
     
     
         9 . The fixed-angle sharpener according to  claim 8 , wherein the height adjusting supporting assembly comprises a screw hole seat and a threaded rotating block, and a supporting height is adjusted by rotating the threaded rotating block. 
     
     
         10 . The fixed-angle sharpener according to  claim 1 , wherein the fixed-angle sharpener further comprises a cutter block, and the cutter block is configured for clamping a cutter to be sharpened. 
     
     
         11 . The fixed-angle sharpener according to  claim 1 , wherein the angle fixing assembly comprises an angle locking member, and the angle locking member is capable of abutting against the angle wheel, and after the angle of the angle wheel is adjusted, the angle locking member abuts against the angle wheel to realize the fixing. 
     
     
         12 . The fixed-angle sharpener according to  claim 11 , wherein the angle locking member is a locking screw, there are at least two groups of locking screws provided, and the locking screws are mounted to the angle block. 
     
     
         13 . The fixed-angle sharpener according to  claim 12 , wherein the supporting body is a shaft body, and the angle block is capable of moving up and down along the shaft body and rotating around the shaft body. 
     
     
         14 . The fixed-angle sharpener according to  claim 11 , wherein the sharpening bar assembly is capable of moving along an axial direction of the sharpening bar assembly on the angle wheel. 
     
     
         15 . The fixed-angle sharpener according to  claim 14 , wherein the supporting body is a shaft body, and the angle block is capable of moving up and down along the shaft body and rotating around the shaft body. 
     
     
         16 . The fixed-angle sharpener according to  claim 14 , wherein the fixed-angle sharpener further comprises a height adjustment supporting assembly, and the height adjustment supporting assembly is configured for supporting the angle block to keep a lowest point of the angle block at a height position. 
     
     
         17 . The fixed-angle sharpener according to  claim 16 , wherein the height adjusting supporting assembly comprises a screw hole seat and a threaded rotating block, and a supporting height is adjusted by rotating the threaded rotating block. 
     
     
         18 . A sharpening method, based on the fixed-angle sharpener according to  claim 1 , comprises following steps:
 clamping and fixing the cutter to be sharpened on the cutter block and selecting a mode according to sharpening requirements from following modes:   Mode 1, in which rotation is performed to adjust the angle of the angle wheel to match an inclination angle of the sharpening bar assembly with an sharpening angle of a blade, then the angle wheel is fixed using the angle fixing assembly, and the sharpening bar assembly is operated to sharpen the cutter, a consistent sharpening angle is ensured through up-and-down movement of the angle block on the supporting body during the sharpening process;   Mode 2, in which the supporting height of the height adjustment supporting assembly is adjusted to realize adjustment of the sharpening bar assembly, and the sharpening bar assembly is operated to sharpen the cutter without fixing of the angle of the angle wheel; and   Mode 3, in which the supporting height of the height adjustment supporting assembly is adjusted to realize angle adjustment of the sharpening bar assembly, and after the angle adjustment, the angle wheel is locked to fix the angle, and then the sharpening bar assembly is operated to sharpen the cutter, and the consistent sharpening angle is ensured through up-and-down movement of the angle block on the supporting body during the sharpening process.