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GB2068275A - Grinding wheel - Google Patents

Grinding wheel Download PDF

Info

Publication number
GB2068275A
GB2068275A GB8038720A GB8038720A GB2068275A GB 2068275 A GB2068275 A GB 2068275A GB 8038720 A GB8038720 A GB 8038720A GB 8038720 A GB8038720 A GB 8038720A GB 2068275 A GB2068275 A GB 2068275A
Authority
GB
United Kingdom
Prior art keywords
metal
grinding wheel
base
metal base
fibres
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
GB8038720A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Disco Corp
Original Assignee
Disco Corp
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 Disco Corp filed Critical Disco Corp
Publication of GB2068275A publication Critical patent/GB2068275A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
    • B24D18/0018—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for by electrolytic deposition
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
    • 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
    • B24D3/001—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 supporting member
    • 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
    • B24D5/12—Cut-off wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor

Landscapes

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

Abstract

A grinding wheel 1 comprises a metal base 3 having a multiplicity of pores or openings 6 and super hard abrasive grains 5, such as diamond grains or cubic system boron nitride, bonded to the metal base 3 by electroplating 5. The metal base is preferably made of soft metal fibres or wire 2 formed into wire gauze, or into metal wool, non-woven fabric, or flocked cloth. The grinding wheel may be formed into a cylindrical, circular disc-like or truncated conical shape depending on the use to which it to be put. <IMAGE>

Description

SPECIFICATION Grinding wheel The present invention relates to grinding wheels consisting of diamond or other super hard abrasive grains bonded to a metal base.
There are various kinds of grinding wheels made of super hard abrasive grains such as diamond grains; examples are resinoid (bonded) grinding wheels, electrodeposited grinding wheels, grinding wheels including metal bases and grinding wheels without bases. All these grinding wheels have drawbacks in that they are easily clogged with ground material and are liable to cause burn marks and grinding cracks because the abrasive grains are tightly packed together.
It is an object of this invention to provide a grinding wheel which does not easily become clogged and therefore does not cause burn marks and grinding cracks when used for cutting or grinding hard, brittle flat plates.
It is another object of this invention to provide a grinding wheel which provides new cutting edges automatically as the cutting edges of the grinding wheel wear.
According to this invention, a grinding wheel comprises a metal base having a multiplicity of large pores or openings therein and super hard abrasive grains on the surface of the base, the grains being bonded to the base by metal plating on the base.
Preferably, the super hard abrasive grains are of a super hard crystalline material.
Several examples of grinding wheels in accordance with the invention will now be described with reference to the accompanying drawings in which: Figure 1 is a partially enlarged partial plan view of one example in which a wire gauze forms the metal base; Figure 2 is a partially enlarged side view of a second example in which metal fibres forming metal wool constitute the metal base; Figure 3 is a partially enlarged side view of a third example in which metal fibres forming non-woven fabric constitute the metal base; Figure 4 is a partially enlarged side view of a fourth example in which metal fibres forming flocked cloth constitute the metal base; Figures 5(a), (b), (c) are perspective views of various examples of metal bases of different shapes; Figure 6 is a perspective view of a grinding wheel in accordance with the invention attached to one end of a rotary cup.
In Fig. 1 illustrating the first example, a grinding wheel 1 has a circular disc-like metal base 3 which is of gauze made of copper or brass fibres or wires 2 and which has a multiplicity of pores or openings 6 between the wires or fibres. The gauze of the base is 0.3 to 1 mm thick for precision working.
Several layers of gauze placed one over another may be used, if required to make a thicker grinding wheel.
The metal base 3 is covered, on both sides, with super hard abrasive grains 4 of crystalline material such as diamond grains or cubic system boron nitride, by the aid of metal plating 5 such as nickel plating as a bonding agent. The number of the pores or openings 6 is equal to the number of the meshes in the base 3. The size of the pores 6 is dependent on the initial size of the mesh and the quantity of plating metal 5 deposited on the gauze.
Fig. 2 shows a second example in which the metal base 3 is of metal wool or coiled or randomly entangled copper or brass fibres 2.
Fig. 3 shows a third example in which the metal base 3 is formed of non-woven fabric of copper or brass staple fibres 2.
Fig. 4 shows a fourth example, in which the metal base is made by flocking copper or brass fibres 2 on a substrate. The metal fibres 2 may be moulded with synthetic resin as a binder.
As in the first example shown in Fig. 1, in the Examples shown in Figs. 2 to 4, the metal fibres 2 of the metal base 3 are covered with super hard abrasive grains 4 such as diamond grains which are bonded to the base by plating metal 5 such as nickel, and a multiplicity of large pores or openings 6 are formed in the metal base.
Figs. 5(a), (b), (c) shows examples of various shapes in which the metal base may be formed. Fig. 5(a) shows a metal base 3 of cylindrical shape. Fig. 5(c) shows a metal base 3 of circular disc shape. Fig. 5(c) shows a metal base 3 of truncated conical shape.
With each of these bases, the grinding wheel 1 is formed as explained referring to Figs. 1 to 4. A grinding wheel in accordance with this invention may have its metal base 3, which is formed as described above, bonded to the lower open end of a rotary cup 7 as shown in Fig. 6.
The metal base 3 may also be made of a soft metal plate covered all over with many small holes 50 microns to 2 mm in diameter, instead of being made of metal fibres 2. Such holes may be made by electrolysis, etching, high frequency, and other known methods.
The perforated metal base thus made may be coated with diamond grains 4 as described above and formed for example, into any of the shapes shown in Figs. 5(a), (b) and (c).
1. A grinding wheel comprising a metal base having a multiplicity of large pores or openings therein and super hard abrasive grains on the surface of the base, the grains being bonded to the base by metal plating on the base.
2. A grinding wheel according to Claim 1, wherein the metal base is of metal gauze formed of metal fibres or wires.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (11)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Grinding wheel The present invention relates to grinding wheels consisting of diamond or other super hard abrasive grains bonded to a metal base. There are various kinds of grinding wheels made of super hard abrasive grains such as diamond grains; examples are resinoid (bonded) grinding wheels, electrodeposited grinding wheels, grinding wheels including metal bases and grinding wheels without bases. All these grinding wheels have drawbacks in that they are easily clogged with ground material and are liable to cause burn marks and grinding cracks because the abrasive grains are tightly packed together. It is an object of this invention to provide a grinding wheel which does not easily become clogged and therefore does not cause burn marks and grinding cracks when used for cutting or grinding hard, brittle flat plates. It is another object of this invention to provide a grinding wheel which provides new cutting edges automatically as the cutting edges of the grinding wheel wear. According to this invention, a grinding wheel comprises a metal base having a multiplicity of large pores or openings therein and super hard abrasive grains on the surface of the base, the grains being bonded to the base by metal plating on the base. Preferably, the super hard abrasive grains are of a super hard crystalline material. Several examples of grinding wheels in accordance with the invention will now be described with reference to the accompanying drawings in which: Figure 1 is a partially enlarged partial plan view of one example in which a wire gauze forms the metal base; Figure 2 is a partially enlarged side view of a second example in which metal fibres forming metal wool constitute the metal base; Figure 3 is a partially enlarged side view of a third example in which metal fibres forming non-woven fabric constitute the metal base; Figure 4 is a partially enlarged side view of a fourth example in which metal fibres forming flocked cloth constitute the metal base; Figures 5(a), (b), (c) are perspective views of various examples of metal bases of different shapes; Figure 6 is a perspective view of a grinding wheel in accordance with the invention attached to one end of a rotary cup. In Fig. 1 illustrating the first example, a grinding wheel 1 has a circular disc-like metal base 3 which is of gauze made of copper or brass fibres or wires 2 and which has a multiplicity of pores or openings 6 between the wires or fibres. The gauze of the base is 0.3 to 1 mm thick for precision working. Several layers of gauze placed one over another may be used, if required to make a thicker grinding wheel. The metal base 3 is covered, on both sides, with super hard abrasive grains 4 of crystalline material such as diamond grains or cubic system boron nitride, by the aid of metal plating 5 such as nickel plating as a bonding agent. The number of the pores or openings 6 is equal to the number of the meshes in the base 3. The size of the pores 6 is dependent on the initial size of the mesh and the quantity of plating metal 5 deposited on the gauze. Fig. 2 shows a second example in which the metal base 3 is of metal wool or coiled or randomly entangled copper or brass fibres 2. Fig. 3 shows a third example in which the metal base 3 is formed of non-woven fabric of copper or brass staple fibres 2. Fig. 4 shows a fourth example, in which the metal base is made by flocking copper or brass fibres 2 on a substrate. The metal fibres 2 may be moulded with synthetic resin as a binder. As in the first example shown in Fig. 1, in the Examples shown in Figs. 2 to 4, the metal fibres 2 of the metal base 3 are covered with super hard abrasive grains 4 such as diamond grains which are bonded to the base by plating metal 5 such as nickel, and a multiplicity of large pores or openings 6 are formed in the metal base. Figs. 5(a), (b), (c) shows examples of various shapes in which the metal base may be formed. Fig. 5(a) shows a metal base 3 of cylindrical shape. Fig. 5(c) shows a metal base 3 of circular disc shape. Fig. 5(c) shows a metal base 3 of truncated conical shape. With each of these bases, the grinding wheel 1 is formed as explained referring to Figs. 1 to 4. A grinding wheel in accordance with this invention may have its metal base 3, which is formed as described above, bonded to the lower open end of a rotary cup 7 as shown in Fig. 6. The metal base 3 may also be made of a soft metal plate covered all over with many small holes 50 microns to 2 mm in diameter, instead of being made of metal fibres 2. Such holes may be made by electrolysis, etching, high frequency, and other known methods. The perforated metal base thus made may be coated with diamond grains 4 as described above and formed for example, into any of the shapes shown in Figs. 5(a), (b) and (c). CLAIMS
1. A grinding wheel comprising a metal base having a multiplicity of large pores or openings therein and super hard abrasive grains on the surface of the base, the grains being bonded to the base by metal plating on the base.
2. A grinding wheel according to Claim 1, wherein the metal base is of metal gauze formed of metal fibres or wires.
3. A grinding wheel according to Claim 1, wherein the metal base is of metal wool formed of metal fibres.
4. A grinding wheel according to Claim 1, wherein the metal base is of non-woven fabric formed of metal fibres.
5. A grinding wheel according to Claim 1, wherein the metal base is of flocked cloth made of metal fibres.
6. A grinding wheel according to Claim 1, wherein the metal base is a metal plate formed all over with small holes.
7. A grinding wheel according to any one of the preceding Claims, wherein the super hard abrasive grains are of a super hard crystalline material.
8. A grinding wheel according to Claim 7, wherein the super hard crystalline material is diamond or cubic system boron nitride.
9. A grinding wheel according to any one of the proceding Claims, in which the metal base is of copper or brass.
10. A grinding wheel according to any one of the preceding Claims, in which the metal plating is of nickel.
11. A grinding wheel according to Claim 1, substantially as described with reference to any one of Figs. 1 to 4 and any one of Figs.
Sato 6 of the accompanying drawings.
GB8038720A 1980-02-01 1980-12-03 Grinding wheel Withdrawn GB2068275A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1980011469U JPS56116166U (en) 1980-02-01 1980-02-01

Publications (1)

Publication Number Publication Date
GB2068275A true GB2068275A (en) 1981-08-12

Family

ID=11778929

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8038720A Withdrawn GB2068275A (en) 1980-02-01 1980-12-03 Grinding wheel

Country Status (6)

Country Link
JP (1) JPS56116166U (en)
DE (1) DE3045755A1 (en)
FR (1) FR2474922A1 (en)
GB (1) GB2068275A (en)
IT (1) IT1143341B (en)
NL (1) NL8006600A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3606581A1 (en) * 1986-02-28 1987-09-03 Nkk Nihon Structure Co Grinding or cutting disc
EP0263785A1 (en) * 1986-09-15 1988-04-13 Abrasive Technology N.A., Inc. A flexible abrasive coated article and method of making it
US4826508A (en) * 1986-09-15 1989-05-02 Diabrasive International, Ltd. Flexible abrasive coated article and method of making it
DE3790060C2 (en) * 1986-02-10 1991-07-04 Toshiba Tungaloy Co. Ltd., Kawasaki, Kanagawa, Jp
WO2000007775A1 (en) * 1998-08-05 2000-02-17 Minnesota Mining And Manufacturing Company Abrasive article with separately formed front surface protrusions containing a grinding aid and methods of making and using
USD987295S1 (en) * 2021-03-19 2023-05-30 DV International Inc. Tool tray

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0763937B2 (en) * 1987-04-30 1995-07-12 株式会社ノリタケカンパニーリミテド Super hard abrasive grain electrodeposition grinding sheet
US5049165B1 (en) * 1989-01-30 1995-09-26 Ultimate Abrasive Syst Inc Composite material
JP6041248B1 (en) * 2016-03-25 2016-12-07 伊藤　幸男 Wire mesh grinding wheel with coolant guide base metal

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2376254A (en) * 1943-08-20 1945-05-15 Robert G Humphrey Abrasive disk
DE936619C (en) * 1950-12-01 1955-12-15 Gasaccumulator Svenska Ab Abrasive bodies with cores of a hard material embedded in a metallic binder, e.g. B. Diamond and its method of manufacture
FR1333072A (en) * 1962-09-05 1963-07-19 Armour & Co New abrasive product
US3420007A (en) * 1966-07-11 1969-01-07 Wallace Murray Corp Abrasive tool
US3751237A (en) * 1970-04-15 1973-08-07 Gen Motors Corp Abrasive composition of tetragonal germanium dioxide
GB1375571A (en) * 1971-07-27 1974-11-27
JPS5112486A (en) * 1974-07-22 1976-01-31 Hajikano Kiyoshi KENSAKU YOTOISHI
US4047902A (en) * 1975-04-01 1977-09-13 Wiand Richard K Metal-plated abrasive product and method of manufacturing the product
GB1498689A (en) * 1976-08-31 1978-01-25 Kendia Ltd Cutting disc

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3790060C2 (en) * 1986-02-10 1991-07-04 Toshiba Tungaloy Co. Ltd., Kawasaki, Kanagawa, Jp
DE3606581A1 (en) * 1986-02-28 1987-09-03 Nkk Nihon Structure Co Grinding or cutting disc
EP0263785A1 (en) * 1986-09-15 1988-04-13 Abrasive Technology N.A., Inc. A flexible abrasive coated article and method of making it
US4826508A (en) * 1986-09-15 1989-05-02 Diabrasive International, Ltd. Flexible abrasive coated article and method of making it
WO2000007775A1 (en) * 1998-08-05 2000-02-17 Minnesota Mining And Manufacturing Company Abrasive article with separately formed front surface protrusions containing a grinding aid and methods of making and using
USD987295S1 (en) * 2021-03-19 2023-05-30 DV International Inc. Tool tray

Also Published As

Publication number Publication date
DE3045755A1 (en) 1981-08-13
IT8167132A0 (en) 1981-02-02
NL8006600A (en) 1981-09-01
JPS56116166U (en) 1981-09-05
FR2474922A1 (en) 1981-08-07
IT1143341B (en) 1986-10-22

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)