GB2332162A - Grinding Discs - Google Patents

Grinding Discs Download PDF

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Publication number
GB2332162A
GB2332162A GB9726181A GB9726181A GB2332162A GB 2332162 A GB2332162 A GB 2332162A GB 9726181 A GB9726181 A GB 9726181A GB 9726181 A GB9726181 A GB 9726181A GB 2332162 A GB2332162 A GB 2332162A
Authority
GB
United Kingdom
Prior art keywords
disc
slots
grinding
apertures
workpiece
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.)
Granted
Application number
GB9726181A
Other versions
GB9726181D0 (en
GB2332162B (en
Inventor
Simon Henry Jordan
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB9726181A priority Critical patent/GB2332162B/en
Publication of GB9726181D0 publication Critical patent/GB9726181D0/en
Publication of GB2332162A publication Critical patent/GB2332162A/en
Application granted granted Critical
Publication of GB2332162B publication Critical patent/GB2332162B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • B24D7/12—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 with apertures for inspecting the surface to be abraded

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

A grinding disc (2) for use in an edge grinder has apertures such as slots (4) in it to allow a view of a workpiece through the disc when the disc is in use.

Description

1 GRINDING DISC 2332162 The present invention relates to grinding discs.
Illustrative embodiments of the invention relate to grinding discs for use in edge grinders. The present invention also relates to a hand-held power tool which uses a grinding disc. An example of such a hand-held tool is an edge grinder and the invention will be discussed by way of example with reference to an edge grinder.
Hand-held, powered, edge grinders are well known. Such a grinder uses a circular grinding disc, which comprises a substrate to which an abrasive material is bonded. When such a hand-held grinder is used, the disc may be in the line of sight between the user and the work-piece, hiding the work piece. That can make use of the grinder difficult.
According to the present invention, there is provided a grinding disc for an edge grinder, the disc having slots and/or apertures therein allowing a workpiece to be visible through the disc when the disc rotates in use.
The provision of the slots and/or apertures, renders the disc semitransparent when rotated at its normal operational rate. Thus the work piece can be seen.
The slots and/or apertures can take a variety of forms. For example at least one of the slots may extend to the outer periphery of the disc. Preferably all the slots extend to the outer periphery. The slots are preferably radial but could be inclined to the radial direction.
Instead of slots other shaped apertures could be used.
It will be appreciated that it is essential that the grinding disc is not unduly weakened by the provision of too many slots or slots which are too big. Also, appropriate safety precautions must be taken when using discs in accordance with this invention.
For a better understanding of the present invention, reference will now be made, by way of example, to the accompanying drawing in which:
Figure I is a diagram of an illustrative grinding disc according to the invention.
2 The disc of Figure 1, comprises a substrate 2 to which abrasive material is bonded. The substrate and abrasive material are well known in the art. In this preferred embodiment, the substrate comprises glass cloth bonded with a cured phenolic resin. The abrasive material may be carborundum or any other well known 5 abrasive material.
Four radial slots 4 are forined in the disc, each slot extending to the periphery of the disc. The radially inner ends 6 of the slots are smoothly curved.
Experiments have shown that the disc allows a view of a workpiece to which it is applied in use. The disc functioned normally.
Various modifications may be made. For example the substrate of the disc could be a metal disc with an abrasive facing. The metal may be ferrous or nonferrous.
The slots may be inclined to the radial direction.
The number of slots may be other than 4 provided that there are sufficient to allow the workpiece to be seen through the disc in use thereof. For example there may be 5 or more slots.
Not all, or even any, of the slots need extend to the periphery of the disc.
The slots may be replaced by other apertures, for example circular holes arranged in patterns which allow a view of the workpiece through the disc when the disc is rotated in use.
The invention may be applied to discs of various sizes, e.g. 4 inch (102 mm), 41/2 inch (115 min) or 9 inch (229 mm) 3

Claims (6)

1. A grinding disc for an edge grinder, the disc having slots and/or apertures therein allowing a workpiece to be visible through the disc when the disc rotates in 5 use.
2. A disc according to claim 1, having slots therein.
3.
A disc according to claim 2, wherein the slots are radial.
4. A disc according to claim 2 or 3, wherein at least one of the slots is openended at the outer periphery of the disc.
5. A grinding disc substantially as hereinbefore described with reference to the 15 accompanying drawing.
6. A hand-held powered edge grinder comprising a disc according to any preceding claim.
GB9726181A 1997-12-12 1997-12-12 Grinding disc Expired - Lifetime GB2332162B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9726181A GB2332162B (en) 1997-12-12 1997-12-12 Grinding disc

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9726181A GB2332162B (en) 1997-12-12 1997-12-12 Grinding disc

Publications (3)

Publication Number Publication Date
GB9726181D0 GB9726181D0 (en) 1998-02-11
GB2332162A true GB2332162A (en) 1999-06-16
GB2332162B GB2332162B (en) 2002-09-18

Family

ID=10823437

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9726181A Expired - Lifetime GB2332162B (en) 1997-12-12 1997-12-12 Grinding disc

Country Status (1)

Country Link
GB (1) GB2332162B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013218233A1 (en) * 2013-05-02 2014-11-06 Bayerische Motoren Werke Aktiengesellschaft Rotating grinding tool

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB766633A (en) * 1900-01-01
GB523879A (en) * 1939-02-13 1940-07-24 James Henry Fletcher Improvements relating to abrasive wheels for surface, former and other grinding
GB766651A (en) * 1952-12-31 1957-01-23 Werner Stephan Improvements in or relating to the grinding of workpieces
GB1147542A (en) * 1966-04-25 1969-04-02 Alton Earl Tobey Air cooled tyre abrading rasp
EP0015769A1 (en) * 1979-03-09 1980-09-17 De Beers Industrial Diamond Division (Proprietary) Limited Circular saws
GB1581226A (en) * 1977-08-08 1980-12-10 Thomas J F Rotary cutting and/or grinding tools

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB522040A (en) * 1938-12-03 1940-06-06 Carborundum Co Improvements in or relating to abrasive articles
GB740542A (en) * 1952-07-28 1955-11-16 Harry Arthur Simpson Improvements in and relating to grinding wheels, discs and the like
GB774813A (en) * 1953-11-12 1957-05-15 American Viscose Corp Molded abrasive articles and method for producing them
US3500592A (en) * 1968-01-09 1970-03-17 Robert A Harrist Plastic hub and the application thereof to an abrasive wheel
BR9611910B1 (en) * 1995-12-08 2008-11-18 backing plates for emery discs.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB766633A (en) * 1900-01-01
GB523879A (en) * 1939-02-13 1940-07-24 James Henry Fletcher Improvements relating to abrasive wheels for surface, former and other grinding
GB766651A (en) * 1952-12-31 1957-01-23 Werner Stephan Improvements in or relating to the grinding of workpieces
GB1147542A (en) * 1966-04-25 1969-04-02 Alton Earl Tobey Air cooled tyre abrading rasp
GB1581226A (en) * 1977-08-08 1980-12-10 Thomas J F Rotary cutting and/or grinding tools
EP0015769A1 (en) * 1979-03-09 1980-09-17 De Beers Industrial Diamond Division (Proprietary) Limited Circular saws

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013218233A1 (en) * 2013-05-02 2014-11-06 Bayerische Motoren Werke Aktiengesellschaft Rotating grinding tool
WO2014177374A1 (en) * 2013-05-02 2014-11-06 Bayerische Motoren Werke Aktiengesellschaft Rotary grinding tool

Also Published As

Publication number Publication date
GB9726181D0 (en) 1998-02-11
GB2332162B (en) 2002-09-18

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