Abrasive tool and fabrication method therefor

Abstract

A grinding tool and a manufacturing method thereof are disclosed. The grinding tool includes a plurality of thin teeth (2) which are sequentially spliced and stacked to form an annular structure, wherein every two adjacent thin teeth (2) are fixedly connected, and a groove body (4) is formed between every two adjacent thin teeth (2). The narrower and the more the groove bodies of the grinding tool are, the better the cooling effect is, thus the better the chip-removal effect is. Meanwhile, the manufacturing method for the grinding tool features a machining process having low difficulty and is easy for mass production, thereby facilitating the high-speed and high-efficiency machining of grinding tools with an organic bond and an inorganic bond.

1 . A grinding tool, comprising a plurality of thin teeth which is sequentially spliced and stacked to form an annular structure, wherein every two adjacent thin teeth are fixedly connected; and a groove body is formed between every two adjacent thin teeth. 
     
     
         2 . The grinding tool according to  claim 1 , further comprising a substrate in an annular structure, and a pressing plate, wherein the annular structure formed by the plurality of the thin teeth is fixed on the substrate, the pressing plate has a ring-shaped structure, and the pressing plate is connected with the substrate by a bolt and presses the plurality of the thin teeth. 
     
     
         3 . The grinding tool according to  claim 2 , wherein the plurality of thin teeth comprise a plurality of thin teeth A and a plurality of thin teeth B, and the plurality of thin teeth A and the plurality of thin teeth B are arranged in a staggered manner; or a plurality of elastic thin teeth A and one elastic thin tooth B are arranged in a staggered manner; or a plurality of elastic thin teeth A constitute groups of elastic thin teeth A, a plurality of elastic thin teeth B constitute groups of elastic thin teeth B, and the groups of elastic thin teeth A and the groups of elastic thin teeth B are arranged in a staggered manner; when the thin tooth A and the thin tooth B are combined adjacently, the lower portion of the thin tooth A and the lower portion of the thin tooth B constitute an interlocking structure. 
     
     
         4 . The grinding tool according to  claim 3 , wherein the elastic thin teeth A are made of a first bond and a first abrasive, and the elastic thin teeth B are made of a second bond and a second abrasive. 
     
     
         5 . The grinding tool according to  claim 2 , wherein the substrate is provided with a limiting groove arranged along the inner annular edge of the substrate; the lower portions of the plurality of thin teeth are embedded in the limiting groove, and upper portions of the plurality of thin teeth are all made of an abrasive layer. 
     
     
         6 . The grinding tool according to  claim 5 , wherein the abrasive layer is made of diamond. 
     
     
         7 . The grinding tool according to  claim 2 , wherein an end face of the pressing plate close to the thin teeth is inclined and is matched and close to end faces of the thin teeth, and a filler embedded in the pressing plate is arranged at a position of the pressing plate close to an annular end face of each thin tooth. 
     
     
         8 . The grinding tool according to  claim 1 , wherein a plurality of groove bodies is arranged in an annular shape along the annular structure, and each of the groove bodies is displaced from a radial direction of the annular structure. 
     
     
         9 . The grinding tool according to  claim 2 , wherein at an end of each thin tooth away from the inner annular side of the substrate, a first bump in connection with the end is arranged at one side of the end. 
     
     
         10 . The grinding tool according to  claim 2 , wherein a plurality of first convex textures is connected to a side wall of each thin tooth close to another thin tooth. 
     
     
         11 . The grinding tool according to  claim 2 , wherein a plurality of second bumps is connected to a side wall of each thin tooth. 
     
     
         12 . The grinding tool according to  claim 2 , wherein the plurality of the thin teeth comprises a plurality of thin teeth C and a plurality of thin teeth D, several thin teeth C are continuously spliced and stacked to form a first abrasive body, several thin teeth D are continuously spliced and stacked to form a second abrasive body, and a plurality of first abrasive bodies and a plurality of second abrasive bodies are spliced in a staggered manner to form the annular structure on the substrate; the width of the one end of each thin tooth C close to the inside of the substrate is greater than that of the other end of the thin tooth C, and the width of one end of each thin tooth D close to the inside of the substrate is smaller than that of the other end of the thin tooth D. 
     
     
         13 . The grinding tool according to  claim 2 , wherein the end face of the annular structure is tightly attached to the edge of the substrate; the pressing plate is in an annular shape and is placed on the upper end of the substrate;
 a meshing position is provided on the side wall of one end of each thin tooth close to the inner annular side of the substrate, every two adjacent thin teeth engage with each other through the meshing position, and the lower end face of the pressing plate is inclined downward from the inner annular side to the outer annular side of the pressing plate to limit the plurality of thin teeth; one end of each of the thin teeth away from the inner annular side of the substrate is provided with a grinding structure.   
     
     
         14 . The grinding tool according to  claim 13 , wherein an arc length of each point of the grinding structure on each thin tooth in an axial direction is in a positive relationship with the machining amount at this point. 
     
     
         15 . The grinding tool according to  claim 1 , wherein the upper end of each thin tooth is provided with a plurality of grooves in a radial direction of the annular structure, and the plurality of grooves forms a net structure with the plurality of groove bodies to form a net grinding surface. 
     
     
         16 . The grinding tool according to  claim 1 , wherein every two adjacent thin teeth are fixedly connected by gluing and/or a fastener. 
     
     
         17 . The grinding tool according to  claim 1 , wherein the bond for the plurality of thin teeth is an organic bond, an inorganic bond, or a composite bond. 
     
     
         18 . The grinding tool according to  claim 1 , wherein the grinding tool is a thin-tooth spliced diamond grinding wheel. 
     
     
         19 . A manufacturing method for the grinding tool of  claim 1 , comprising the following steps:
 S1. manufacturing thin teeth according to a set structure, so that a ratio of an average radial length of each thin tooth to an average circumferential width thereof is greater than 2.5; and   S2. manufacturing a main pressing surface of each thin tooth as a non-grinding working surface, wherein the main pressing surface is a surface with the largest area of the thin tooth.   
     
     
         20 . The manufacturing method for the grinding tool according to  claim 19 , further comprising step S4: consolidating the plurality of thin teeth to the substrate through a pressing plate and bolts.