JP2016087719A5

JP2016087719A5 -

Info

Publication number: JP2016087719A5
Application number: JP2014222200A
Authority: JP
Filing date: 2014-10-31
Publication date: 2017-12-14
Anticipated expiration: 2034-10-31

Description

本発明に係る砥石車は、円板状部材と、前記円板状部材の外周面に配置される砥石層と、を備える砥石車であって、前記砥石層は、周方向に分割される複数の周方向分割砥石チップを備え、前記複数の周方向分割砥石チップのそれぞれは、性状の異なる第一砥石チップ及び第二砥石チップが軸線方向に配列されて形成され、前記複数の周方向分割砥石チップのそれぞれにおいて前記第一砥石チップと前記第二砥石チップとの境界部は、軸線方向境界部と定義し、前記複数の周方向分割砥石チップのうち周方向に連続して配置される少なくとも３つの周方向分割砥石チップにおける前記軸線方向境界部は、周方向に連続して配置された前記少なくとも３つの周方向分割砥石チップの順に前記軸線方向の所定の方向に向かって整列しており、前記各境界部は、前記軸線方向に所定の幅を有し、前記所定の幅の中には、前記各境界部の前記軸線方向両端に配置された前記性状の異なる前記第一及び第二砥石チップの各砥粒が混在して混合部を形成する。 The grinding wheel according to the present invention is a grinding wheel comprising a disk-shaped member and a grinding wheel layer disposed on an outer peripheral surface of the disk-shaped member, and the grinding wheel layer is divided into a plurality in the circumferential direction. Each of the plurality of circumferentially divided grindstone chips, each of the plurality of circumferentially divided grindstone chips is formed by arranging first and second grindstone chips having different properties in the axial direction, and the plurality of circumferentially divided grindstone chips In each of the chips, a boundary part between the first grindstone chip and the second grindstone chip is defined as an axial boundary part, and at least three of the plurality of circumferentially divided grindstone chips are continuously arranged in the circumferential direction. one of the axial boundary in the circumferential direction divided grinding chips are aligned in a predetermined direction of the axial direction in the order of the arranged continuously in the circumferential direction at least three circumferentially divided grinding chips, wherein The boundary portion has a predetermined width in the axial direction, and the predetermined width includes the first and second grindstone tips having different properties disposed at both ends of the boundary portion in the axial direction. Each abrasive grain is mixed to form a mixed portion.

Claims

A disk-shaped member;
A grindstone layer disposed on the outer peripheral surface of the disk-shaped member;
A grinding wheel equipped with
The grindstone layer includes a plurality of circumferentially divided grindstone chips divided in the circumferential direction,
Each of the plurality of circumferentially divided grindstone tips is formed by arranging first and second grindstone tips having different properties in the axial direction,
In each of the plurality of circumferentially divided grindstone tips, a boundary portion between the first grindstone tip and the second grindstone tip is defined as an axial boundary portion,
Among the plurality of circumferentially divided grindstone chips, the axial boundary in at least three circumferentially divided grindstone chips that are continuously arranged in the circumferential direction is the at least three circumferential directions that are continuously arranged in the circumferential direction. Aligned in the order of the divided grindstone chips toward a predetermined direction in the axial direction ,
Each of the boundary portions has a predetermined width in the axial direction, and the first and second grindstones having different properties disposed at both ends of the boundary portion in the axial direction are included in the predetermined width. A grinding wheel in which the abrasive grains of the chips are mixed to form a mixing section .

The first grindstone tip has a large grain size and high hardness,
The second grindstone tip has a small grain size and low hardness,
Said first grinding chips is disposed at both ends of the axial direction of the grinding wheel layer,
Said second grinding wheel chip is disposed in a central portion of the axial direction of the grinding wheel layer, the grinding wheel according to claim 1.

The grindstone layer includes a cylindrical portion and R portions disposed at both ends of the cylindrical portion,
The first grindstone tip is disposed in a part of each R portion,
The second grindstone tip is disposed on the remaining part of the cylindrical portion and each R portion,
The grinding wheel according to claim 2, wherein the axial direction boundary portion is disposed at a part of each R portion.

The grindstone according to any one of claims 1 to 3 , wherein the amount of overlap in the axial direction of each mixing portion with the mixing portion adjacent in the circumferential direction of the outer peripheral surface of the disk-shaped member varies. car.

A method of manufacturing a grinding wheel,
The grinding wheel is the grinding wheel according to any one of claims 1 to 4 ,
The grinding wheel manufacturing method is:
A grinding wheel manufacturing method for forming the grinding wheel layer by disposing the first and second grinding wheel tips of each of the plurality of circumferentially divided grinding stone tips on an outer peripheral surface of the disk-shaped member.