EP4074459A1 - Improved abrading wheel - Google Patents

Improved abrading wheel Download PDF

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Publication number
EP4074459A1
EP4074459A1 EP22171607.9A EP22171607A EP4074459A1 EP 4074459 A1 EP4074459 A1 EP 4074459A1 EP 22171607 A EP22171607 A EP 22171607A EP 4074459 A1 EP4074459 A1 EP 4074459A1
Authority
EP
European Patent Office
Prior art keywords
abrading wheel
grooves
rim
circular core
wheel according
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Withdrawn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
EP22171607.9A
Other languages
German (de)
English (en)
French (fr)
Inventor
Kim Bluhme KJÆRGAARD
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.)
B&J Rocket Sales AG
Original Assignee
B&J Rocket Sales AG
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 B&J Rocket Sales AG filed Critical B&J Rocket Sales AG
Priority to EP22171607.9A priority Critical patent/EP4074459A1/en
Publication of EP4074459A1 publication Critical patent/EP4074459A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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 width of the rim may vary according to the use, but may be at least 20 mm or may be at least 200 mm. However, it should be noted that the width and in fact the entire abrading wheel may be scaled according to the desired use.
  • the rim is mounted along an edge to the outer periphery.
  • the rim is a circular element mounted onto said outer periphery.
  • a grit material is meant a material preferably having a hardness substantially higher than the product which the abrading wheel is meant to grind.
  • the grit material constitutes grit.
  • the grit material may be tungsten carbide.
  • the grit material may be formed as small grains comprising a plurality of sharp spikes, or it may be other structures comprising sharp edges capable of grinding products.
  • the cross section of the grooves may be V-shaped.
  • the grooves are arranged orthogonally to the central axis of the abrading wheel, i.e. the central axis of rotation.
  • grains of the grit material disposed on spaces between the grooves may be said to shadow subsequent grains of same grit material, i.e. the grinding efficiency of the abrading wheel is lowered which may be desired in certain use.
  • the resistance between the grit and product to be grinded is reduced. That means that due to the grooves and accompanying spaces with grit material being aligned to the normal cutting angle, a smaller amount of grit material is exposed to the product to be grinded at a given time. Thus, the resistance is reduced which may be useful for certain products or situations.
  • the thickness of the circular core may be smaller than the width of the rim, such that the inner surface of the rim is exposed to air.
  • the mounting may be through welding, or the mounting may be through means of pressing, stamping, or casting the abrading wheel in a single piece.
  • a tongue may be attached to each opening of the circular core, a plurality of tongues thereby being arranged in said circular core.
  • the grit size disclosed is standardised according to Federation of European Producers of Abrasives (FEPA).
  • a grit size of 14 corresponds to a particle size (mean diameter) of 1.47 mm
  • a grit size of 220 corresponds a particle size (mean diameter) of 0.058 mm.
  • Fig. 1 is a perspective view of a part of an abrading wheel 100 according to the invention.
  • the abrading wheel 100 comprises a circular core 101 having an outer periphery 103 and a central aperture 105. Said central aperture 105 is arranged in a depression 109. Said depression 109 protrudes into an inner volume (not shown) partly defined by said circular core 101 and a rim 111 arranged orthogonally to said core 101 on said outer periphery 103.
  • the abrading wheel 100 may be said to be bowl-shaped with a central depression 109.
  • the depression 109 is an integral part of the core 101 therefore being considered as part of the core 101 in this context.
  • the core 101 and rim 111 are formed in a casting process.
  • the core 101 is equipped with a plurality of openings 121.
  • said openings 121 are arranged equiangularly in a circular pattern at a fixed distance from a centre point of the central opening 105.
  • the openings 121 are equipped with tongues 123, said tongues 123 preferably being an integral part of the core 101 and formed from bending the material along an uncut edge 124.
  • the openings 121 may be rectangular, such that the tongues 123 are formed from cutting along three edges thus leaving a fourth edge uncut and thereby allowing said fourth edge to be bent.
  • the tongues 123 are bent towards the inner volume (not shown).
  • the grooves 131 and accompanying intermediate spaces 132 are arranged in a helix or tilted relative to the outer periphery 103, a larger amount of grit material 141 makes contact with the product to be grinded at any given time during rotation of the abrading wheel 100, assuming the product makes normal incident onto the rim 111.
  • the helix arranged or tilted grooves 131 and spaces 132 provide an increased free space for a product making contact to the grit material 132 disposed in the spaces 132.
  • the grinding efficiency of the abrading wheel 100 is increased.
  • Fig. 3 shows a top view of the abrading wheel 100.
  • the top view exposes the inner volume.
  • the direction of the central axis L serves as reference to Fig. 1 .
  • the plurality of openings 121 is shown without tongues 123. However, it should be noted that in the case of said tongues 123 being an integral part of the core 101, it is not optional to detach or attach said tongues 123.
  • the plurality of openings 121 is shown to be equiangularly spaced on the core 101 around the central axis L.
  • the central aperture 105 is shown to be arranged symmetrically around the central axis L.
  • Fig. 5 illustrates an excerpt of an outer surface 113 comprising a large separation of grooves 131, i.e. large spaces 132. Further, the grooves 131 and the accompanying spaces 132 are tilted at an angle 1 relative to the x-direction. The tilt forms a helix along the circumference of the rim 111 and around an axis coinciding with the central axis L (not shown).
  • the grit material 141 is disposed on the spaces 132, such that the grooves 131 are free of grit material 141.
  • a shaded triangle indicates a possible impact area 150 for a product to be grinded by the abrading wheel 100.
  • a product making normal incident i.e.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Braking Arrangements (AREA)
EP22171607.9A 2017-03-31 2017-03-31 Improved abrading wheel Withdrawn EP4074459A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22171607.9A EP4074459A1 (en) 2017-03-31 2017-03-31 Improved abrading wheel

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP21195510.9A EP3957438B1 (en) 2017-03-31 2017-03-31 Improved abrading wheel
EP17715119.8A EP3600771B1 (en) 2017-03-31 2017-03-31 Improved abrading wheel
EP22171607.9A EP4074459A1 (en) 2017-03-31 2017-03-31 Improved abrading wheel
PCT/EP2017/057724 WO2018177541A1 (en) 2017-03-31 2017-03-31 Improved abrading wheel

Related Parent Applications (3)

Application Number Title Priority Date Filing Date
EP17715119.8A Division EP3600771B1 (en) 2017-03-31 2017-03-31 Improved abrading wheel
EP21195510.9A Division-Into EP3957438B1 (en) 2017-03-31 2017-03-31 Improved abrading wheel
EP21195510.9A Division EP3957438B1 (en) 2017-03-31 2017-03-31 Improved abrading wheel

Publications (1)

Publication Number Publication Date
EP4074459A1 true EP4074459A1 (en) 2022-10-19

Family

ID=58464553

Family Applications (3)

Application Number Title Priority Date Filing Date
EP22171607.9A Withdrawn EP4074459A1 (en) 2017-03-31 2017-03-31 Improved abrading wheel
EP21195510.9A Active EP3957438B1 (en) 2017-03-31 2017-03-31 Improved abrading wheel
EP17715119.8A Active EP3600771B1 (en) 2017-03-31 2017-03-31 Improved abrading wheel

Family Applications After (2)

Application Number Title Priority Date Filing Date
EP21195510.9A Active EP3957438B1 (en) 2017-03-31 2017-03-31 Improved abrading wheel
EP17715119.8A Active EP3600771B1 (en) 2017-03-31 2017-03-31 Improved abrading wheel

Country Status (12)

Country Link
US (1) US20210162565A1 (da)
EP (3) EP4074459A1 (da)
CN (1) CN110621443A (da)
BR (1) BR112019019667B1 (da)
CA (1) CA3056693C (da)
DK (2) DK3600771T3 (da)
ES (2) ES2915555T3 (da)
MX (1) MX2019011498A (da)
NZ (1) NZ757271A (da)
PL (2) PL3957438T3 (da)
PT (2) PT3957438T (da)
WO (1) WO2018177541A1 (da)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3134326B1 (fr) 2022-04-07 2024-03-15 Yona Chocard Dispositif de ventilation pour meule abrasive et meule abrasive comprenant un tel dispositif de ventilation

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3579928A (en) * 1969-07-14 1971-05-25 Gerhard R Held Self-air cooling abrading wheel
US6007415A (en) * 1995-12-08 1999-12-28 Norton Company Sanding disks
US20020035890A1 (en) 2000-09-26 2002-03-28 Tenryu Seikyo Kabushiki Kaisha Metal bonded drilling and/or chamfering tool
EP2075090A1 (en) * 2006-10-12 2009-07-01 JTEKT Corporation Dynamic pressure releasing method of grinding liquid in grinding operation, grinding method using the releasing method, and grinding stone for use in the grinding method

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2049874A (en) * 1933-08-21 1936-08-04 Miami Abrasive Products Inc Slotted abrasive wheel
US2047649A (en) * 1935-11-06 1936-07-14 Harry G Robinson Abrasive wheel
US3916579A (en) * 1975-02-10 1975-11-04 Tunco Manufacturing Inc Slotted abrasive wheel
US4516560A (en) * 1982-07-29 1985-05-14 Federal-Mogul Corporation Abrasive cutting wheel and method of cutting abradable material
JPH052293Y2 (da) * 1986-05-30 1993-01-20
IT232262Y1 (it) * 1993-09-24 1999-12-17 Quintilio Lupi Mola a base elastica per la levigatura e lucidatura di profili toroidali in materiali duri.
US5611724A (en) * 1995-12-01 1997-03-18 General Electric Company Grinding wheel having dead end grooves and method for grinding therewith
FR2752762B1 (fr) * 1996-08-29 1998-10-02 Snecma Meule de rectification avec arrosage incorpore
US20050064799A1 (en) * 2003-09-24 2005-03-24 Inland Diamond Products Company Ophthalmic roughing wheel
JP5100225B2 (ja) * 2006-11-06 2012-12-19 株式会社ジェイテクト 傾斜溝入り砥石及びその製造方法
CN101386155A (zh) * 2008-07-25 2009-03-18 浙江迪邦达轴承有限公司 大接触面磨削用砂轮
CN101890678B (zh) * 2009-05-19 2011-09-28 好来化工(中山)有限公司 一种磨轮及带有该磨轮的磨刷装置
US8597079B2 (en) * 2011-01-07 2013-12-03 Inland Diamond Products Company Abrasive wheel with closed profiles in cutting surface
KR20150083733A (ko) * 2014-01-10 2015-07-20 주식회사 세한텍 유리 시트 가공용 연마 휠
CN205218870U (zh) * 2015-12-25 2016-05-11 郑州磨料磨具磨削研究所有限公司 一种新型结构的金刚石磨头

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3579928A (en) * 1969-07-14 1971-05-25 Gerhard R Held Self-air cooling abrading wheel
US6007415A (en) * 1995-12-08 1999-12-28 Norton Company Sanding disks
US20020035890A1 (en) 2000-09-26 2002-03-28 Tenryu Seikyo Kabushiki Kaisha Metal bonded drilling and/or chamfering tool
EP2075090A1 (en) * 2006-10-12 2009-07-01 JTEKT Corporation Dynamic pressure releasing method of grinding liquid in grinding operation, grinding method using the releasing method, and grinding stone for use in the grinding method

Also Published As

Publication number Publication date
NZ757271A (en) 2022-02-25
US20210162565A1 (en) 2021-06-03
EP3957438B1 (en) 2022-06-15
EP3957438A1 (en) 2022-02-23
DK3600771T3 (da) 2022-05-09
MX2019011498A (es) 2019-11-01
CA3056693A1 (en) 2018-10-04
EP3600771A1 (en) 2020-02-05
WO2018177541A1 (en) 2018-10-04
BR112019019667A2 (pt) 2020-04-22
DK3957438T3 (da) 2022-08-29
BR112019019667B1 (pt) 2022-09-27
CN110621443A (zh) 2019-12-27
PL3600771T3 (pl) 2022-06-20
EP3600771B1 (en) 2022-03-30
ES2924097T3 (es) 2022-10-04
CA3056693C (en) 2022-05-03
PL3957438T3 (pl) 2022-08-16
PT3600771T (pt) 2022-06-17
ES2915555T3 (es) 2022-06-23
PT3957438T (pt) 2022-08-17

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