WO2010151039A2 - Machining wheel - Google Patents

Machining wheel Download PDF

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Publication number
WO2010151039A2
WO2010151039A2 PCT/KR2010/004064 KR2010004064W WO2010151039A2 WO 2010151039 A2 WO2010151039 A2 WO 2010151039A2 KR 2010004064 W KR2010004064 W KR 2010004064W WO 2010151039 A2 WO2010151039 A2 WO 2010151039A2
Authority
WO
WIPO (PCT)
Prior art keywords
disk
machining wheel
abrasive particles
diamond abrasive
holes
Prior art date
Application number
PCT/KR2010/004064
Other languages
French (fr)
Other versions
WO2010151039A3 (en
Inventor
Sung Ho Cho
Jae Hwa Noh
Original Assignee
Shinhan Diamond Ind. Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shinhan Diamond Ind. Co., Ltd. filed Critical Shinhan Diamond Ind. Co., Ltd.
Publication of WO2010151039A2 publication Critical patent/WO2010151039A2/en
Publication of WO2010151039A3 publication Critical patent/WO2010151039A3/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
    • B24D3/04—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic
    • B24D3/06—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements
    • B24D3/10—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements for porous or cellular structure, e.g. for use with diamonds as abrasives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/10—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with cooling provisions, e.g. with radial slots

Definitions

  • the present invention relates to a machining wheel, and more specifically to a machining wheel rotatably mounted to a grinder and coming into contact with a workpiece while rotating at a high speed to perform a grinding or cutting operation on the workpiece.
  • a general machining wheel includes a metallic disk and diamond abrasive particles attached to the edge surface of the disk.
  • An insertion hole is formed at a center of the disk and is inserted onto a rotating shaft of a grinder.
  • the disk is also termed a "shank”.
  • the machining wheel can be manufactured by interposing a brazing material between the disk and the diamond abrasive particles and heating the disk to a high temperature to attach the diamond abrasive particles to the surface of the disk. This process is called "melt-bonding". When the machining wheel is in use, the problem is caused that the disk may be distorted by thermal deformation.
  • Another problem of the machining wheel during use is that cut chips from a workpiece do not escape readily, resulting in a reduction in grinding speed.
  • Another problem of the machining wheel during use is that heat released from the disk by the friction of the machining wheel against a workpiece does not escape readily, resulting in deterioration of durability.
  • the present invention has been made in an effort to solve the problems of the prior art, and it is an object of the present invention to provide a machining wheel constructed such that cut chips from a workpiece and heat from a disk readily escape without thermal deformation of the disk.
  • a machining wheel comprising a metallic disk and diamond abrasive particles attached to the edge surface of the disk wherein a plurality of through-holes are formed in an edge portion of the disk so as to penetrate the upper and lower surfaces of the disk.
  • the through-holes are arranged along arc-shaped curves.
  • a straight line connecting both ends of each of the arc-shaped curves is inclined at an angle of 30°to 50°relative to the radial direction of the disk.
  • the diamond abrasive particles are attached to the edge surface of the disk by melt-bonding a brazing material interposed between the diamond abrasive particles and the disk.
  • the plurality of through-holes formed in an edge portion of the disk, to which the diamond abrasive particles are attached provide spaces to compensate for the thermal expansion of the disk to prevent the disk from being distorted by thermal deformation.
  • heat released from the disk by the friction of the machining wheel of the present invention against a workpiece readily escapes through the through-holes, resulting in improved durability.
  • FIG. 1 is a perspective view of a machining wheel according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1.
  • FIG. 1 is a perspective view of a machining wheel 1 according to an embodiment of the present invention
  • FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1.
  • the machining wheel 1 comprises a metallic disk 10 and diamond abrasive particles 20 attached to the edge surface of the disk 10.
  • the machining wheel has an insertion hole 11 formed at a center of the disk 10 and inserted onto a rotating shaft of a grinder.
  • a brazing material 30 is interposed between the diamond abrasive particles 20 and the disk 10 and is melted to attach the diamond abrasive particles 20 to the edge surface of the disk 10.
  • Examples of the brazing material 30 include Ni-, Ag-, Co- and CuSn-based brazing materials.
  • a plurality of through-holes 13 are formed in an edge portion of the disk 10, to which the diamond abrasive particles 20 are attached, so as to penetrate the upper and lower surfaces of the disk 10.
  • the through-holes 13 are arranged along arc-shaped curves. It is preferred that a straight line connecting both ends of each of the arc-shaped curves is inclined at an angle of 30° to 50°relative to the radial direction of the disk 10. In this embodiment, the through-holes 13 are arranged along arc-shaped curves inclined at an angle of about 45°relative to the radial direction of the disk 10.
  • the plurality of through-holes 13 formed in an edge portion of the disk 10, to which the diamond abrasive particles 20 are attached provide spaces to compensate for the thermal expansion of the disk 10 to prevent the disk 10 from being distorted by thermal deformation.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

A machining wheel is disclosed. The machining wheel comprises a metallic disk and diamond abrasive particles attached to the edge surface of the disk. A plurality of through-holes are formed in an edge portion of the disk so as to penetrate the upper and lower surfaces of the disk.

Description

MACHINING WHEEL
The present invention relates to a machining wheel, and more specifically to a machining wheel rotatably mounted to a grinder and coming into contact with a workpiece while rotating at a high speed to perform a grinding or cutting operation on the workpiece.
A general machining wheel includes a metallic disk and diamond abrasive particles attached to the edge surface of the disk. An insertion hole is formed at a center of the disk and is inserted onto a rotating shaft of a grinder. The disk is also termed a "shank".
The machining wheel can be manufactured by interposing a brazing material between the disk and the diamond abrasive particles and heating the disk to a high temperature to attach the diamond abrasive particles to the surface of the disk. This process is called "melt-bonding". When the machining wheel is in use, the problem is caused that the disk may be distorted by thermal deformation.
Another problem of the machining wheel during use is that cut chips from a workpiece do not escape readily, resulting in a reduction in grinding speed.
Another problem of the machining wheel during use is that heat released from the disk by the friction of the machining wheel against a workpiece does not escape readily, resulting in deterioration of durability.
The present invention has been made in an effort to solve the problems of the prior art, and it is an object of the present invention to provide a machining wheel constructed such that cut chips from a workpiece and heat from a disk readily escape without thermal deformation of the disk.
According to an aspect of the present invention to accomplish the above object, there is provided a machining wheel comprising a metallic disk and diamond abrasive particles attached to the edge surface of the disk wherein a plurality of through-holes are formed in an edge portion of the disk so as to penetrate the upper and lower surfaces of the disk.
In a preferred embodiment, the through-holes are arranged along arc-shaped curves.
In a preferred embodiment, a straight line connecting both ends of each of the arc-shaped curves is inclined at an angle of 30°to 50°relative to the radial direction of the disk.
In a preferred embodiment, the diamond abrasive particles are attached to the edge surface of the disk by melt-bonding a brazing material interposed between the diamond abrasive particles and the disk.
When the disk is heated to a high temperature in the manufacture of the machining wheel of the present invention by melt-bonding, the plurality of through-holes formed in an edge portion of the disk, to which the diamond abrasive particles are attached, provide spaces to compensate for the thermal expansion of the disk to prevent the disk from being distorted by thermal deformation.
In addition, when the machining wheel of the present invention is in use, cut chips from a workpiece escape through the through-holes, resulting in an increased grinding speed.
Furthermore, heat released from the disk by the friction of the machining wheel of the present invention against a workpiece readily escapes through the through-holes, resulting in improved durability.
FIG. 1 is a perspective view of a machining wheel according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1.
Preferred embodiments of the present invention will now be described with reference to the accompanying drawings.
FIG. 1 is a perspective view of a machining wheel 1 according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1. As illustrated in FIGS. 1 and 2, the machining wheel 1 comprises a metallic disk 10 and diamond abrasive particles 20 attached to the edge surface of the disk 10.
The machining wheel has an insertion hole 11 formed at a center of the disk 10 and inserted onto a rotating shaft of a grinder.
A brazing material 30 is interposed between the diamond abrasive particles 20 and the disk 10 and is melted to attach the diamond abrasive particles 20 to the edge surface of the disk 10. Examples of the brazing material 30 include Ni-, Ag-, Co- and CuSn-based brazing materials.
In this embodiment, a plurality of through-holes 13 are formed in an edge portion of the disk 10, to which the diamond abrasive particles 20 are attached, so as to penetrate the upper and lower surfaces of the disk 10.
It is preferred that the through-holes 13 are arranged along arc-shaped curves. It is preferred that a straight line connecting both ends of each of the arc-shaped curves is inclined at an angle of 30° to 50°relative to the radial direction of the disk 10. In this embodiment, the through-holes 13 are arranged along arc-shaped curves inclined at an angle of about 45°relative to the radial direction of the disk 10.
When the disk 10 is heated to a high temperature in the manufacture of the machining wheel 1 by melt-bonding, the plurality of through-holes 13 formed in an edge portion of the disk 10, to which the diamond abrasive particles 20 are attached, provide spaces to compensate for the thermal expansion of the disk 10 to prevent the disk 10 from being distorted by thermal deformation.
According to the embodiment of the present invention, when the machining wheel 1 is in use, cut chips from a workpiece escape through the through-holes 13 formed in an edge portion of the disk 10, to which the diamond abrasive particles 20 are attached, resulting in an increased grinding speed.
In addition, when the machining wheel 1 is in use, heat released from the disk 10 by the friction of the machining wheel 1 against a workpiece readily escapes through the through-holes formed in an edge portion of the disk 10, to which the diamond abrasive particles 20 are attached, resulting in improved durability.
While the invention has been particularly described with respect to the specific embodiments, it will be evident to those skilled in the art that many modifications, variations and changes are possible without departing from the spirit and scope of the present invention as set forth in the appended claims. Therefore, it should be understood that the description and drawings herein are merely illustrative and are not to be construed as limitations of the invention.

Claims (4)

  1. A machining wheel comprising a metallic disk and diamond abrasive particles attached to the edge surface of the disk wherein a plurality of through-holes are formed in an edge portion of the disk so as to penetrate the upper and lower surfaces of the disk.
  2. The machining wheel of claim 1, wherein the through-holes are arranged along arc-shaped curves.
  3. The machining wheel of claim 2, wherein a straight line connecting both ends of each of the arc-shaped curves is inclined at an angle of 30°to 50° relative to the radial direction of the disk.
  4. The machining wheel of claim 1, wherein the diamond abrasive particles are attached to the edge surface of the disk by melt-bonding a brazing material interposed between the diamond abrasive particles and the disk.
PCT/KR2010/004064 2009-06-25 2010-06-23 Machining wheel WO2010151039A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2009-0056867 2009-06-25
KR1020090056867A KR20100138358A (en) 2009-06-25 2009-06-25 Machining wheel

Publications (2)

Publication Number Publication Date
WO2010151039A2 true WO2010151039A2 (en) 2010-12-29
WO2010151039A3 WO2010151039A3 (en) 2011-04-14

Family

ID=43387038

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2010/004064 WO2010151039A2 (en) 2009-06-25 2010-06-23 Machining wheel

Country Status (2)

Country Link
KR (1) KR20100138358A (en)
WO (1) WO2010151039A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2508246A (en) * 2012-11-27 2014-05-28 Safehouse Habitats Scotland Ltd Cold cutting/grinding disc
WO2017148058A1 (en) * 2016-03-03 2017-09-08 候家祥 Diamond cutter tooth, diamond saw blade, and method for manufacturing diamond cutter tooth

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002192470A (en) * 2000-12-25 2002-07-10 Goei Seisakusho:Kk Grinding wheel tool
KR100421743B1 (en) * 2001-08-08 2004-03-12 지범현 diamond tools workerable for cutting and simultaneously
TW200736001A (en) * 2006-03-27 2007-10-01 Toshiba Kk Polishing pad, method of polishing and polishing apparatus
JP2007307685A (en) * 2006-05-22 2007-11-29 Asahi Diamond Industrial Co Ltd Grinding tool

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2508246A (en) * 2012-11-27 2014-05-28 Safehouse Habitats Scotland Ltd Cold cutting/grinding disc
WO2017148058A1 (en) * 2016-03-03 2017-09-08 候家祥 Diamond cutter tooth, diamond saw blade, and method for manufacturing diamond cutter tooth

Also Published As

Publication number Publication date
KR20100138358A (en) 2010-12-31
WO2010151039A3 (en) 2011-04-14

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