Grinding wheel

A grinding wheel and aggregate technology, applied in the grinding wheel field, can solve the problems of shortening the service life of the grinding wheel, reducing the strength of the bonding material, and easily falling off the abrasive particles 112, so as to improve the grinding efficiency and prevent grinding burns.

Inactive Publication Date: 2009-04-01
TOYODA VAN MOPPES +1
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  • Abstract
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  • Claims
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Problems solved by technology

However, in this technique, the strength of the bonding material 116 decreases because a large number of small-diameter aggregates 114 having cavities (pores) are contained in each bonding bridge 113 connecting adjacent abrasive particles 112
This causes the bonding bridge 113 to crack under the grinding load, making the abrasive grains 112 easy to fall off and shortening the service life of the grinding wheel

Method used

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Embodiment Construction

[0019] A grinding wheel according to an embodiment of the present invention will be described below with reference to the drawings. figure 1 is the overall side view of the grinding wheel, figure 2 Shown is a partially enlarged cross-sectional view of the structure of the portion of the wheel adjacent the grinding surface (ie, the front row or leading edge).

[0020] Now refer to the attached figure 1 , the grinding wheel 2 comprises a disc-shaped core part 4 and an annular or ring-shaped grinding layer 6 fixed to the peripheral surface of the core part 4 by a suitable adhesive or by sintering. The core member 4 is made of metallic material such as steel, aluminum, titanium, FRP (Fiber Reinforced Plastic) material, ceramic material such as a conventional grinding wheel. The grinding layer 6 is formed by fixing a ring-shaped grinding layer ring onto the peripheral surface of the core member 4 or by arranging segmented grinding sheets in a circular array on the peripheral s...

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Abstract

In a grinding wheel comprising a disc-like core member and a ring-shape grinding wheel layer wherein superabrasive grains selected from cubic boron nitride particles and diamond particles are contained together with aggregates in a bonding material, the aggregates are made of porous ceramics particles and have an average particle size which is in a range of 70% to 150% relative to the average particle size of the superabrasive grains, and bridges made of the bonding material are formed between the aggregates adjoining to one another or between the aggregates and the superabrasive grains adjoining to the aggregates.

Description

[0001] Literature Included by Reference [0002] This application is based on and claims priority from Japanese Patent Application No. 2007-255651 filed on September 28, 2007, the entire contents of which are incorporated herein by reference. technical field [0003] The invention relates to a grinding wheel which uses porous ceramic particles as aggregate. Background technique [0004] In grinding wheels such as those employing vitrified bonds, it is well known that the addition of aggregates consisting of alumina abrasive grains or silicon carbide abrasive grains to the bond material can increase by preventing cracking due to excessive shrinkage after the calcination process The strength of the grinding wheel, and can reduce the grinding resistance by increasing the distance between particles (that is, reducing the concentration of abrasive particles). During calcination, the vitrified bond melts to form bonded bridges between the abrasive grains. However, when the cooli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D3/18B24D5/16
CPCB24D3/18
Inventor 竹原宽稻垣朋宏诸户隆幸今池浩史相马伸司森田宏司
Owner TOYODA VAN MOPPES
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