WO2004096495A1 - Grinding wheel with sand paper items - Google Patents
Grinding wheel with sand paper items Download PDFInfo
- Publication number
- WO2004096495A1 WO2004096495A1 PCT/DK2004/000274 DK2004000274W WO2004096495A1 WO 2004096495 A1 WO2004096495 A1 WO 2004096495A1 DK 2004000274 W DK2004000274 W DK 2004000274W WO 2004096495 A1 WO2004096495 A1 WO 2004096495A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sand paper
- grinding wheel
- paper items
- grinding
- wheel
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
- B24D13/14—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face
- B24D13/16—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face comprising pleated flaps or strips
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
- B24D9/08—Circular back-plates for carrying flexible material
Definitions
- the present invention concerns a grinding wheel and of the kind indicated in the preamble of claim 1.
- most grinding wheels used are either a flat wheel or a ring wheel, where some force is to be applied in order to hold the grinding wheel stable onto a surface wanted to be ground.
- a ring wheel where abrasive material is only located from the periphery of the grinding wheel and a distance in on the grinding wheel, for grinding the entire surface there is to be used a number of sweeping movements with the grinding machine, which can be tiresome for the operator who is to hold against the rotating movement of the grinding machine simultaneously with the sweeping movements.
- the operator will try to get the edge of the grinding wheel down into the recesses/countersinks, entailing that the grinding wheel is destroyed and only an uneven grinding of the recess/countersink is achieved.
- EP 0 566 761 is shown a grinding wheel with a fraction of surfaces inclining outwards and where lying grinding strips are fitted on this fraction.
- the drawback of this type is that one is required to tip/turn the grinding wheel in order to utilise the grind- ing strips optimally.
- the purpose of the present invention is therefore to indicate a grinding wheel that ensures a stable and uniform grinding, and which is suitable for grinding concave, con- vex and plane surfaces and recesses/countersinks.
- the sand paper items are distributed polarly and evenly around on the surface of the grinding wheel, so that the sand paper items here cover the greater part of the radius of the surface, implying that the greater part of the grinding wheel surface can be used for countergrindring.
- the surface has increasing height inwards from the periphery of the sur- face implies that the grinding wheel will be felt very stable, as it is the centre part of the grinding wheel that firstly hits the surface wanted to be ground.
- the inwards increasing height of the surface will furthermore contribute to compensate for varying speed as the pressure on the grinding surface on a surface will imply a liigher centre pressure which thereby outbalances the higher peripheral speed, and an even grinding along the entire grinding piece is thereby achieved.
- the surface has increasing height inwards from the periphery of the surface, since by contact with a surface, the central part of the grinding wheel is grinding at first, after which the grinding will spread outwards, depending on the pressure applied to the grinding wheel. This implies that it is not necessary with large swinging arm movements in order to grind a surface.
- a grinding wheel according to the present invention has thus a longer service life than the commonly known flat or annular grinding wheels.
- the sand paper items can be mounted in relation to the direction of rotation in a rearwards curved arrangement.
- the sand paper items are slit inwards towards the surface so that a number of grinding strips are formed.
- the sand paper items consist of a number of sand paper strips. In both cases it is possible to grind edged, curved surfaces, as grinding strips or sand paper strips may yield and be displaced mutually and thereby better follow the surface.
- the grinding ability of the sand paper items may be improved by the sand paper items being supported by a number of support brushes that also are mounted mainly perpendicularly to the surface of the wheel.
- the support brushes are placed right behind the sand paper items so that they support the sand paper items and thereby keep the abrasive part of the sand paper items in against the surface to be ground.
- the support brushes provide that the sand paper items are 'never bending around the foot and lie back across the surface of the grinding wheel. It is an advantage that there is a certain distance from the surface of the grinding wheel and down to the surface wanted to be ground, so that abraded material can be conveyed away, and to reduce the risk of the surface of the grinding wheel coming into contact with the ground surface.
- the number of rows of support brushes may be different depending on how much support the sand paper items are to have. This implies that e.g. there may be three rows of support brushes behind each individual sand paper item.
- the support brushes have the same height inwards from the periphery of the surface, implying that a uniform polishing pressure is attained.
- the grinding wheel can be made so that it is a moulded unit with the sand paper items and the support brushes. This causes that when the sand paper items or the support brushes are worn down, the entire grinding wheel is changed.
- the grinding wheel can be designed with separate parts where the grinding wheel is provided with openings for accommodating the sand paper items and/or the support brushes.
- the openings for accommodating the sand paper items can be undercut channels, and the openings for accommodating the support brushes can be holes.
- the sand paper items and/or the support brushes may subsequently be glued or moulded securely to these openings.
- the grinding wheel for grinding e.g. edged surfaces, it may occur that some sand paper items are torn apart or worn faster than others. Therefore, it is an advantage that the sand paper items and/or support brushes are adapted for being exchanged individually.
- the sand paper items and/or the support brushes are fastened in a fillet disposed in a preferably radial groove in the surface of the grinding wheel.
- the sand paper items are fastened in a preferably radial groove in the surface of the grinding wheel and the support brushes fastened in holes in the surface of the grinding wheel.
- the groove is typically designed with a inwards facing side rendering impossible that the fillet or the edge part of the sand paper items can be released from the groove.
- the surface of the grinding wheel can be designed with a locking means, so that the fillet or the sand paper items cannot be flung out of the groove due to the centrifugal force when the grinding wheel is rotating.
- Such a locking means can be an O-ring placed in a groove in the peripheral edge of the grinding wheel, a spring plate lying under the fillet and thereby retaining the fillet in the groove, or a screw or the like retaining the fillet down into the groove.
- the sand paper items and the support brushes are secured in a common foot, implying that it is possible to exchange a sand paper item and associated support brushes at once.
- This foot can furthermore be designed so that it is possible to exchange the sand paper items subsequently and thereby to reuse the foot.
- abrasive paper items and/or brushes that are exchangeably fastened to the surface of the wheel
- other items may e.g. be: steel brushes, e.g. for cleaning a metal surface scrubbing brushes, e.g. for cleaning floors - "ondel" brushes, e.g. for rough-grinding surfaces
- Fig. 1 is a plan view of a grinding wheel according to the invention
- Fig. 2 is a sectional view of a grinding wheel according to the invention.
- a grinding wheel 1 having a surface 2 to which a number of sand paper items 3 are secured and have a radial extension across the greater part of the radius of surface 2. Behind each sand paper item 3, the grinding wheel is provided with a number of support brushes 4.
- the number of sand paper items 3 and rows of support brushes 4 may be arbitrary. In the shown embodiment of the invention, there are eight sand paper items with associated single rows of support brushes 4.
- the sand paper items 3 are shown here so that they approximately join at the centre of the surface 2, which will be the preferred embodiment of the invention, since there is achieved the best and most uniform grinding when the sand paper items approximately join at the centre.
- the grinding wheel 1 is shown with two sand paper items 3 which have been slit up so that the sand paper items 3 are divided into a number of grinding strips 5.
- the sand paper items 3 are fastened to the surface 2 of the grinding wheel 1 which has an increasing height inwards from the periphery 6 of the surface 2.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Brushes (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2523542A CA2523542C (en) | 2003-04-25 | 2004-04-22 | Grinding wheel with sand paper items |
US10/554,647 US7318770B2 (en) | 2003-04-25 | 2004-04-22 | Grinding wheel with sand paper items |
EP04728765A EP1633530B1 (en) | 2003-04-25 | 2004-04-22 | Grinding wheel with sand paper items |
AT04728765T ATE478752T1 (en) | 2003-04-25 | 2004-04-22 | GRINDING DISC WITH SANDPAPER ELEMENTS |
DE602004028818T DE602004028818D1 (en) | 2003-04-25 | 2004-04-22 | GRINDING WHEEL WITH SANDPAPER ELEMENTS |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK200300627A DK176743B1 (en) | 2003-04-25 | 2003-04-25 | Sanding disc with sandpaper blanks |
DKPA200300627 | 2003-04-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004096495A1 true WO2004096495A1 (en) | 2004-11-11 |
Family
ID=33395635
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DK2004/000274 WO2004096495A1 (en) | 2003-04-25 | 2004-04-22 | Grinding wheel with sand paper items |
Country Status (8)
Country | Link |
---|---|
US (1) | US7318770B2 (en) |
EP (1) | EP1633530B1 (en) |
AT (1) | ATE478752T1 (en) |
CA (1) | CA2523542C (en) |
DE (1) | DE602004028818D1 (en) |
DK (1) | DK176743B1 (en) |
ES (1) | ES2358995T3 (en) |
WO (1) | WO2004096495A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DK178098B1 (en) * | 2009-11-10 | 2015-05-18 | Poul Erik Jespersen | Apparatus for grinding / polishing a surface |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI125880B (en) † | 2009-04-29 | 2016-03-31 | Picote Oy Ltd | Tool and method for pipeline renovation |
DE102011107675A1 (en) * | 2010-07-21 | 2012-01-26 | Rhodius Schleifwerkzeuge Gmbh & Co. Kg | Method for producing a lamellar grinding wheel with a dish-shaped carrier |
RU2013135243A (en) * | 2010-12-27 | 2015-02-10 | Аманда Пэйтент Энд Лайсенсинг Сиа | GRINDING TOOL |
US20130344782A1 (en) * | 2010-12-27 | 2013-12-26 | Amanda Patent & Licensing Sia | Sanding device |
DK177274B1 (en) * | 2011-05-27 | 2012-09-10 | Flex Trim As | Grinding head |
DE202011103741U1 (en) | 2011-07-27 | 2011-12-05 | Arndt & Brinkmann Gmbh & Co. Kg | grinding tool |
US9579771B2 (en) * | 2013-12-02 | 2017-02-28 | Apple Inc. | Flood coolant to through spindle coolant conversion |
DE202014000852U1 (en) | 2014-01-30 | 2015-01-21 | Kolthoff & Co. | Tool for surface finishing |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS571669A (en) | 1980-06-03 | 1982-01-06 | Ken Hagino | Grinder |
US4377878A (en) * | 1981-02-11 | 1983-03-29 | Pecora Daniel P | Vehicle finishing device |
US4493170A (en) | 1981-11-19 | 1985-01-15 | The Boeing Company | Abrading tool |
EP0566761A1 (en) | 1992-04-22 | 1993-10-27 | DIPL.-ING. GUENTER WENDT GmbH | Flapsanding disc |
EP1025958A2 (en) * | 1999-02-02 | 2000-08-09 | Poul Erik Jespersen | A rotatable grinding or polishing tool, an apparatus with such a tool and a method for grinding or polishing |
EP1093885A1 (en) * | 1999-10-18 | 2001-04-25 | Botech AG | Grinding tool |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2452409A (en) * | 1947-01-03 | 1948-10-26 | Wiley W Wickman | Rotary abrading device |
US2597421A (en) * | 1949-05-17 | 1952-05-20 | Edwin H White | Abrading unit |
US4563839A (en) * | 1983-07-22 | 1986-01-14 | Minnesota Mining And Manufacturing Company | Flap wheel |
JPH02167674A (en) * | 1988-09-09 | 1990-06-28 | Yamaha Motor Co Ltd | Polishing device |
GB2349109B (en) * | 1999-04-23 | 2002-09-04 | Elliott Ind Ltd | Improvements in or relating to abrasive flap discs |
-
2003
- 2003-04-25 DK DK200300627A patent/DK176743B1/en not_active IP Right Cessation
-
2004
- 2004-04-22 WO PCT/DK2004/000274 patent/WO2004096495A1/en active Application Filing
- 2004-04-22 US US10/554,647 patent/US7318770B2/en not_active Expired - Lifetime
- 2004-04-22 DE DE602004028818T patent/DE602004028818D1/en not_active Expired - Lifetime
- 2004-04-22 CA CA2523542A patent/CA2523542C/en not_active Expired - Fee Related
- 2004-04-22 EP EP04728765A patent/EP1633530B1/en not_active Expired - Lifetime
- 2004-04-22 AT AT04728765T patent/ATE478752T1/en not_active IP Right Cessation
- 2004-04-22 ES ES04728765T patent/ES2358995T3/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS571669A (en) | 1980-06-03 | 1982-01-06 | Ken Hagino | Grinder |
US4377878A (en) * | 1981-02-11 | 1983-03-29 | Pecora Daniel P | Vehicle finishing device |
US4493170A (en) | 1981-11-19 | 1985-01-15 | The Boeing Company | Abrading tool |
EP0566761A1 (en) | 1992-04-22 | 1993-10-27 | DIPL.-ING. GUENTER WENDT GmbH | Flapsanding disc |
EP1025958A2 (en) * | 1999-02-02 | 2000-08-09 | Poul Erik Jespersen | A rotatable grinding or polishing tool, an apparatus with such a tool and a method for grinding or polishing |
EP1093885A1 (en) * | 1999-10-18 | 2001-04-25 | Botech AG | Grinding tool |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 066, no. 058, 15 April 1982 (1982-04-15) * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DK178098B1 (en) * | 2009-11-10 | 2015-05-18 | Poul Erik Jespersen | Apparatus for grinding / polishing a surface |
Also Published As
Publication number | Publication date |
---|---|
DK176743B1 (en) | 2009-06-02 |
CA2523542C (en) | 2011-11-15 |
DK200300627A (en) | 2004-10-26 |
EP1633530B1 (en) | 2010-08-25 |
US7318770B2 (en) | 2008-01-15 |
ATE478752T1 (en) | 2010-09-15 |
US20060276117A1 (en) | 2006-12-07 |
ES2358995T3 (en) | 2011-05-17 |
CA2523542A1 (en) | 2004-11-11 |
DE602004028818D1 (en) | 2010-10-07 |
EP1633530A1 (en) | 2006-03-15 |
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