A peripheral grinding wheel for rough and fine grinding of pcbn blades

Abstract

The invention discloses a peripheral grinding wheel for rough and fine grinding of PCBN blades, comprising a grinding wheel body and an abrasive layer located on the outer ring surface of the grinding wheel body, the abrasive layer is bonded to the outer ring surface of the grinding wheel body through a ceramic bond, The abrasive layer is a fine-grain diamond abrasive layer or a coarse-grain diamond abrasive layer. The abrasive layer includes a first abrasive layer and a second abrasive layer. The second abrasive layer covers part of the outer ring surface of the first abrasive layer. The first abrasive layer is coarse grain The diamond abrasive layer, the second abrasive layer is a fine-grained diamond abrasive layer, and there are 8 installation through holes evenly distributed around the axis of the grinding wheel body at the inner ring of the grinding wheel body. The structure design of the grinding wheel of the invention is reasonable. After the rough machining is completed, there is no need to replace the machine tool and the grinding wheel, which can reduce the configuration of the machine tool, reduce the grinding error caused by repeated clamping, improve the grinding efficiency, and ensure the grinding The cutting edge quality improves the installation accuracy.

Description

Technical field [0001] The present invention relates to the field of polishing wheel manufacturing, and more particularly to a peripheral frozen wheel for a coarse grinding of a PCBN blade. Background technique [0002] PCBN tool (sheet) is a human cubic boron nitride tool (piece), while maintaining high hardness during high temperature, mainly processing iron parts. In recent years, the mechanical processing industry has developed to high speed, efficient, high-precision direction, and PCBN blades have reflected excellent cutting performance in high-speed cutting of metal materials due to high cutting efficiency, high-speed cutting of metal materials, has been widely used in automobiles. Aviation, aerospace, building materials and other industrial areas. Commonly used PCBN tool blade mill has diamond grinding wheel machinery blade mill, discharge blade mill, electrolytic edge grinding, etc., wherein the mechanical edging is low, and the processing cost is high, but the quality o...

AI Technical Summary

Problems solved by technology

At present, the same grinding wheel is used for rough and fine grinding of the back angle and chamfering of PCBN inserts. However, due to the unreasonable design of the grinding wheel structure, it is generally necessary to replace the machine tool and the grinding wheel after the rough machining is completed. Not only increases the configuration of the machine tool, but also virtually increases the grinding error caused by repeated clamping

In addition, when the existing grinding wheel is installed and positioned, it only refers to the relative position of the installation through hole, and there is a certain deviation in the calculation.

Patent CN103753413B discloses a peripheral grinding wheel for processing PCBN blades, including a grinding wheel base and an abrasive layer positioned on the grinding wheel base. The abrasive layer includes diamond, vitrified bond, pore forming agent and phenolic resin liquid. The weight of each raw material in the abrasive layer The percentage content is 44-65% of diamond, 22.5-40.5% of vitrified bond, 0.5-10% of pore-forming agent, and 5-10% of phenolic resin solution. The raw material composition and weight percentage of vitrified bond are, silica 40%-60.5%, 5.5-17% alumina, 25-35% boric acid, 2-7% sodium carbonate, 8-11% lithium hydroxide, 2-6% calcium oxide; the pore-forming agent is alumina hollow ball, this patent cannot solve the above technical problems

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