WO2007011289A1 - Device for a grinding machine - Google Patents

Device for a grinding machine Download PDF

Info

Publication number
WO2007011289A1
WO2007011289A1 PCT/SE2006/000889 SE2006000889W WO2007011289A1 WO 2007011289 A1 WO2007011289 A1 WO 2007011289A1 SE 2006000889 W SE2006000889 W SE 2006000889W WO 2007011289 A1 WO2007011289 A1 WO 2007011289A1
Authority
WO
WIPO (PCT)
Prior art keywords
grinding
plate
grooves
grinding plate
gripping
Prior art date
Application number
PCT/SE2006/000889
Other languages
French (fr)
Inventor
Claes-Göran BERGSTRAND
Odd Kjos
Original Assignee
Scanmaskin Sverige Ab
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 Scanmaskin Sverige Ab filed Critical Scanmaskin Sverige Ab
Priority to EP06758071A priority Critical patent/EP1904271A1/en
Publication of WO2007011289A1 publication Critical patent/WO2007011289A1/en
Priority to NO20076236A priority patent/NO20076236L/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/04—Headstocks; Working-spindles; Features relating thereto
    • B24B41/047—Grinding heads for working on plane surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/18—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/18—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like
    • B24B7/186—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like with disc-type tools
    • 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
    • B24D7/06—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 inserted abrasive blocks, e.g. segmental
    • B24D7/066—Grinding blocks; their mountings or supports

Definitions

  • the present invention relates to a device for the detachable fastening of a number of holding plates for carrying grinding elements on a rotatably driven circular grinding plate for floors or similar surfaces.
  • the grinding segments known according to SE 525 501 C2 are carried by holding plates in the form of bent sheet-metal plates, which diverge in the direction out- ward, as seen in the radial direction.
  • the production of a grinding plate intended for holding the holding plates will be costly and the elevation of grinding segments from the grinding plate as seen in the radial direction also entails great effect on the grinding plate because of uneven load.
  • tightening of the grinding tools is required, which is time- consuming and US 1,470,957 A relates to a construction having oblique wedge-shaped grooves widened outward requiring wedge elements for holding grinding tools.
  • a device for the detachable fastening of a number of holding plates for carrying grinding elements on a rotatably driven grinding plate.
  • the device comprises radial grooves, extending converg- ingly in the direction from the centre of the grinding plate toward the outer portion thereof, which grooves are arranged to holdingly co-operate with detachable congruent gripping members projecting from the underside of the respective holding plate. Grinding elements are arranged to be situated on the top side of the respective holding plate.
  • the grooves as well as the gripping members have wedge-shaped sloping edge surfaces for the mutual gripping co-operation between pair-wise groove edge surfaces and grip edge surfaces. Similar devices having external wedge-shapedly forming grooves possible to screw on are previously known by CH 523746 C, FR 2131299 A and DE 1777051 A.
  • the main objects of the present invention are primarily to easily and efficiently solve the problem of providing simple exchange of grinding tools when they need to be exchanged and replaced by other grinding tools, and in that connection, that the carrying grinding plate is easy both to manufacture and to use as well as that the grinding tools are clamped safely and efficiently on the grinding plate .
  • a device which substantially is characterized in that radial grooves, extending convergingly in the direction from the centre of the grinding plate toward the outer portion thereof and formed by cavities in the rotatably driven grinding plate, are arranged to holdingly co-operate with detachable congruent gripping members projecting from the underside of the respective holding plate, which gripping members are situated at the centre of the holding plate extending radially, that related grinding elements are arranged to be situated on the top side of the respective holding plate, that the grooves have a length greater than the length of the gripping members of the respective holding plate, and that the grooves as well as the gripping members have wedge-shaped slop- ing edge surfaces for the mutual gripping co-operation between pair-wise groove edge surfaces and grip edge surfaces.
  • Figs. 1-lA show a first embodiment of the invention as seen in front view and side view, respectively,
  • Figs. 2-2A show a second embodiment example of the invention
  • Fig. 3 shows a holding plate for carrying grinding elements as seen from one of the short ends, from below and the other short end, respectively,
  • Fig. 4 shows in perspective a grinding plate having cut out grooves therein
  • Fig. 5 shows examples of a holding plate having grinding elements and gripping members, respectively, diametrically facing away from each other
  • Fig. 6 shows in perspective a part of a holding plate having fastened grinding segments
  • Fig. 7 shows a method for the fastening of grinding elements on a holding plate.
  • a device 1 allowing to provide detachable fastening of a number of holding plates 2, which are intended for carrying grinding elements 3 on a rotatably driven circular grinding plate 4 intended for grinding floors of stone or concrete or for other similar surfaces, comprises fastening means 5 therefor. More precisely, there are radial 6 grooves 10 extending convergingly in the direction 7 from the centre 8 of the grinding plate toward the outer portion 9 of the grinding plate. Said grooves 10 are arranged to holdingly co-operate with detachable congruent gripping members 12 projecting from the underside 11 of the respective holding plate.
  • Related grinding elements 3 are arranged to be fastened and situated on the top side 13 of the respective holding plate.
  • the grooves 10 as well as the gripping members 12 have, in that connection, wedge-shaped sloping edge surfaces 14; 15; 16; 17 in order to thereby provide mutual gripping co-operation between pair-wise groove edge surfaces and gripping-member edge surfaces 14-16 and 15-17, respectively.
  • the grinding plate 4 has screw holes 19 to be used for the tightening of the grinding plate 4 on a common frame plate, not shown, for carrying a plurality of grinding plates 4.
  • the screw holes have a countersink 20 adapted to the head diameter 21 and the head countersink angle 22, respectively, of fastening screws.
  • Said screw holes 19 are distributed on the grinding plate 4 along a common diameter 23 while the grinding plate 4 has a greater diameter 24.
  • Said grooves 10 are preferably sparked out of the grinding plate 4 and extend preferably entirely through the entire thickness 25 of said grinding plate with the inclination in such a way that the grooves, in addition to tapering in the direction outward toward the circumference edge 9 of the grinding plate, also tapering toward the back side 26 of the grind- ing plate from the front side 27 thereof.
  • the grooves In the thick end 32 and in the small end 33, respectively, the grooves have a width 34 and 35, respectively, that makes that the grooves become evenly conical, and that they are conical from one side to the other side of the plate 4.
  • the grooves 10 in the grinding plate 4 have a length L greater than the length A of the gripping members 12 of the respective holding plate.
  • the fastening of holding plates 2 carrying grinding elements 3 takes place readily without any screwing of the holding plates 2 that are fixed firmly by means of gripping co-operation between the mating grooves 10 and the gripping members 12.
  • the grinding elements 3 are V- or U-shaped as seen along the plane that they are arranged to grind on, e.g., an underlay such as a floor.
  • an underlay such as a floor.
  • the device according to the present invention now allows quick exchange of holding plates carrying grinding elements by the fact that the old ones easily are knocked loose radially in the direction 36 inward toward the centre of the grinding plate 4 and are lifted away from the groove 10.
  • new holding plates carrying new grinding ele- ments are inserted by being lowered with the gripping members 12 thereof into the mating grooves 10.
  • a hammer, for instance, is then used to strike gently on the slender end 30 of the holding plates 2 in the radial direction 7 from the centre of the grinding plate 4.

Abstract

The invention relates to a device (1) for the detachable fastening of a number of holding plates for carrying grinding elements on a rotatably driven grinding plate (4) for floors or similar surfaces. According to the invention, radial (6) grooves (10) extend convergingly in the direction (7) from the centre (8) of the grinding plate toward the outer portion (9) thereof, which grooves are arranged to holdingly co-operate with detachable congruent gripping members projecting from the underside of the respective holding plate (2) . Related grinding elements are arranged to be situated on the top side of the respective holding plate (2), and the grooves (10) as well as the gripping members have wedge-shaped sloping edge surfaces for the mutual gripping cooperation between pair-wise groove edge surfaces and gripping- member edge surfaces.

Description

Device for a grinding machine
The present invention relates to a device for the detachable fastening of a number of holding plates for carrying grinding elements on a rotatably driven circular grinding plate for floors or similar surfaces.
It is previously known to detachably fasten grinding elements on rotatably mounted driven grinding plates. Examples of this are shown in, for instance, SE 525 501 C2, US 2,842,904 A and US 1,470,957 A.
However, the grinding segments known according to SE 525 501 C2 are carried by holding plates in the form of bent sheet-metal plates, which diverge in the direction out- ward, as seen in the radial direction. The production of a grinding plate intended for holding the holding plates will be costly and the elevation of grinding segments from the grinding plate as seen in the radial direction also entails great effect on the grinding plate because of uneven load. According to the embodiment in US 2,842,904 A, tightening of the grinding tools is required, which is time- consuming and US 1,470,957 A relates to a construction having oblique wedge-shaped grooves widened outward requiring wedge elements for holding grinding tools. By DE 2051898 A, a device is previously known for the detachable fastening of a number of holding plates for carrying grinding elements on a rotatably driven grinding plate. The device comprises radial grooves, extending converg- ingly in the direction from the centre of the grinding plate toward the outer portion thereof, which grooves are arranged to holdingly co-operate with detachable congruent gripping members projecting from the underside of the respective holding plate. Grinding elements are arranged to be situated on the top side of the respective holding plate. The grooves as well as the gripping members have wedge-shaped sloping edge surfaces for the mutual gripping co-operation between pair-wise groove edge surfaces and grip edge surfaces. Similar devices having external wedge-shapedly forming grooves possible to screw on are previously known by CH 523746 C, FR 2131299 A and DE 1777051 A.
The same solutions require much work both as regards the parts included and also for the assembly of the numerous parts on grinding discs.
Therefore, the main objects of the present invention are primarily to easily and efficiently solve the problem of providing simple exchange of grinding tools when they need to be exchanged and replaced by other grinding tools, and in that connection, that the carrying grinding plate is easy both to manufacture and to use as well as that the grinding tools are clamped safely and efficiently on the grinding plate .
Said objects are attained by means of a device according to the present invention, which substantially is characterized in that radial grooves, extending convergingly in the direction from the centre of the grinding plate toward the outer portion thereof and formed by cavities in the rotatably driven grinding plate, are arranged to holdingly co-operate with detachable congruent gripping members projecting from the underside of the respective holding plate, which gripping members are situated at the centre of the holding plate extending radially, that related grinding elements are arranged to be situated on the top side of the respective holding plate, that the grooves have a length greater than the length of the gripping members of the respective holding plate, and that the grooves as well as the gripping members have wedge-shaped slop- ing edge surfaces for the mutual gripping co-operation between pair-wise groove edge surfaces and grip edge surfaces.
The invention is described below by way of a number of preferred embodiment examples, reference being made to the accompanying drawings, in which
Figs. 1-lA show a first embodiment of the invention as seen in front view and side view, respectively,
Figs. 2-2A show a second embodiment example of the invention, Fig. 3 shows a holding plate for carrying grinding elements as seen from one of the short ends, from below and the other short end, respectively,
Fig. 4 shows in perspective a grinding plate having cut out grooves therein, Fig. 5 shows examples of a holding plate having grinding elements and gripping members, respectively, diametrically facing away from each other,
Fig. 6 shows in perspective a part of a holding plate having fastened grinding segments, and Fig. 7 shows a method for the fastening of grinding elements on a holding plate.
A device 1 allowing to provide detachable fastening of a number of holding plates 2, which are intended for carrying grinding elements 3 on a rotatably driven circular grinding plate 4 intended for grinding floors of stone or concrete or for other similar surfaces, comprises fastening means 5 therefor. More precisely, there are radial 6 grooves 10 extending convergingly in the direction 7 from the centre 8 of the grinding plate toward the outer portion 9 of the grinding plate. Said grooves 10 are arranged to holdingly co-operate with detachable congruent gripping members 12 projecting from the underside 11 of the respective holding plate. Related grinding elements 3 are arranged to be fastened and situated on the top side 13 of the respective holding plate. The grooves 10 as well as the gripping members 12 have, in that connection, wedge-shaped sloping edge surfaces 14; 15; 16; 17 in order to thereby provide mutual gripping co-operation between pair-wise groove edge surfaces and gripping-member edge surfaces 14-16 and 15-17, respectively.
According to the present invention, the grooves
10 are formed by cavities in the rotatably driven circular grinding plate 4 and are evenly distributed along the circum- ference 18 of the grinding plate 4. The grinding plate 4 has screw holes 19 to be used for the tightening of the grinding plate 4 on a common frame plate, not shown, for carrying a plurality of grinding plates 4. In that connection, the screw holes have a countersink 20 adapted to the head diameter 21 and the head countersink angle 22, respectively, of fastening screws. Said screw holes 19 are distributed on the grinding plate 4 along a common diameter 23 while the grinding plate 4 has a greater diameter 24.
Said grooves 10 are preferably sparked out of the grinding plate 4 and extend preferably entirely through the entire thickness 25 of said grinding plate with the inclination in such a way that the grooves, in addition to tapering in the direction outward toward the circumference edge 9 of the grinding plate, also tapering toward the back side 26 of the grind- ing plate from the front side 27 thereof.
As is seen in Fig. 3, radial gripping members
12, are situated on the underside 11 of the laterally 28 extending holding plates, which have a greater extension B laterally 28 at the farthest out ends 29 of the holding plates than the width b the same have at the innermost ends 30 of the holding plates.
Said grooves 10, which preferably are three, extend by a length L of between 0,4-0,6 of the radius of the plate and are situated between the centre 8 and outer edge portion 9 of the grinding plate at a distance 31 from said centre 8.
In the thick end 32 and in the small end 33, respectively, the grooves have a width 34 and 35, respectively, that makes that the grooves become evenly conical, and that they are conical from one side to the other side of the plate 4.
In order to enable to get the holding plate 2 in place on the grinding plate 4, the grooves 10 in the grinding plate 4 have a length L greater than the length A of the gripping members 12 of the respective holding plate.
As is shown in the drawings in Figs. 6-7, the fastening of holding plates 2 carrying grinding elements 3 takes place readily without any screwing of the holding plates 2 that are fixed firmly by means of gripping co-operation between the mating grooves 10 and the gripping members 12. In that connection, the grinding elements 3 are V- or U-shaped as seen along the plane that they are arranged to grind on, e.g., an underlay such as a floor. In Fig. 7, there are seen the different steps of first choosing a groove 10 for a grinding-ele- ment carrying holding plate 2, next placing the subjacent gripping member 12 of the holding plate 2 into the groove 10 at the inner portion thereof, and finally, after radial pulling out of the holding plate 2 toward the outer portion of the groove 10 and after possible striking action from within on the holding plate 2, fastening said grinding element 3 and holding plate 2 in place. Then it remains the fastening of other holding plates 2 and grinding elements 3 into mating slot-shaped grooves 10 distributed evenly along the grinding plate 4. All this takes less than a minute.
Thus, the device according to the present invention now allows quick exchange of holding plates carrying grinding elements by the fact that the old ones easily are knocked loose radially in the direction 36 inward toward the centre of the grinding plate 4 and are lifted away from the groove 10. Next, new holding plates carrying new grinding ele- ments are inserted by being lowered with the gripping members 12 thereof into the mating grooves 10. A hammer, for instance, is then used to strike gently on the slender end 30 of the holding plates 2 in the radial direction 7 from the centre of the grinding plate 4. By the fact that the respective holding plate rests with the underside thereof directly against the planar surface of the grinding plate, and that the holding plates have a great extension laterally, efficient support is obtained upon action by the grinding elements when the machine is run on a floor and machines the same or against another hard material.
Naturally, the invention is not limited to the embodiments described above and shown in the accompanying drawings. Modifications are feasible, particularly as for the nature of the different parts, or by using an equivalent tech- nique, without departing from the protection area of the invention, such as it is defined in the claims.

Claims

S237 PlPCT LG/ASLClaims
1. Device (1) for the detachable fastening of a number of holding plates (2) for carrying grinding elements (3) on a rotatably driven circular grinding plate (4) for floors or similar surfaces, characterized in that radial (6) grooves
(10), extending convergingly in the direction (7) from the cen- tre (8) of the grinding plate toward the outer portion (9) thereof and formed by cavities in the rotatably driven grinding plate (4), are arranged to holdingly co-operate with detachable congruent gripping members (12) projecting from the underside
(11) of the respective holding plate (2), which gripping mem- bers are situated at the centre of the holding plate extending radially, that related grinding elements (3) are arranged to be situated on the top side of the respective holding plate (2) , that the grooves (10) have a length (L) greater than the length (A) of the gripping members (12) of the respective holding plate, and that the grooves (10) as well as the gripping members (12) have wedge-shaped sloping edge surfaces (14,15,16,17) for the mutual gripping co-operation between pair-wise groove edge surfaces and grip edge surfaces (14-16; 15-17).
2. Device according to claim 1, characterized in that the grooves (10) are evenly distributed along the circumference (18) of the grinding plate (4).
3. Device according to any one of the preceding claims, charac- terized in that the grinding plate (4) has screw holes (19) for the tightening of the grinding plate (4) on a common frame plate for carrying a plurality of grinding plates (4).
4. Device according to any one of the preceding claims, characterized in that the holding plates (2) have a greater extension (B) laterally (28) at the farthest out ends
(29) of the holding plates than the extension (b) the same have at the innermost ends (30) of the holding plates (2) .
5. Device according to any one of the preceding claims, characterized in that three grooves (10) are arranged in the grinding plate (4).
6. Device according to any one of the preceding claims, characterized in that the grooves (10) extend by a length (L) of between 0,4-0,6 of the radius of the grinding plate (4) .
7. Device according to any one of the preceding claims, characterized in that the grooves (10) are sparked out or in another way cut out of the grinding plate (4) .
8. Device according to any one of the preceding claims, characterized in that the grooves (10) extend entirely through the entire thickness (25)of the grinding plate (4).
PCT/SE2006/000889 2005-07-18 2006-07-18 Device for a grinding machine WO2007011289A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP06758071A EP1904271A1 (en) 2005-07-18 2006-07-18 Device for a grinding machine
NO20076236A NO20076236L (en) 2005-07-18 2007-12-04 Device by grinding machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0501695-1 2005-07-18
SE0501695A SE528916C2 (en) 2005-07-18 2005-07-18 Device for grinding machine

Publications (1)

Publication Number Publication Date
WO2007011289A1 true WO2007011289A1 (en) 2007-01-25

Family

ID=37669082

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2006/000889 WO2007011289A1 (en) 2005-07-18 2006-07-18 Device for a grinding machine

Country Status (4)

Country Link
EP (1) EP1904271A1 (en)
NO (1) NO20076236L (en)
SE (1) SE528916C2 (en)
WO (1) WO2007011289A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010027312A1 (en) 2008-09-05 2010-03-11 Husqvarna Ab Double row abrasive disc
CN101934505A (en) * 2010-08-17 2011-01-05 何�轩 Grinding disc and high-speed rail bridge grinder provided with same
WO2011039393A1 (en) * 2009-09-30 2011-04-07 Raquel Matilla Botella Multi-layer piece for polishing stone, ceramic ware, porcelain ware and for all types of paving and cladding
WO2014055031A1 (en) * 2012-10-05 2014-04-10 Scanmaskin Sverige Ab Holder arrangement for grinding tools
FR3025447A1 (en) * 2014-09-05 2016-03-11 Mbh Dev ROTARY DISK WITH REMOVABLE ABRASIVE SEGMENTS
WO2017009524A1 (en) * 2015-07-16 2017-01-19 Mika Ahonen Apparatus for grinding a concrete floor surface

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105904341B (en) * 2016-06-22 2017-12-22 无锡市东特机械科技有限公司 A kind of seal polishing clamping device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1777051A1 (en) * 1968-08-28 1971-11-25 Fickert Kg Maschinen Und Schle Grinding segment for manufacturing a slip ring
DE2051898A1 (en) * 1970-06-22 1971-12-30 Veva, Luigi, Mailand (Italien) Grinding segment to form a grinding ring, mainly for working on marble and granite
CH523746A (en) * 1971-04-07 1972-06-15 Marra Donato Grinding body and use of the same in a surface grinding machine
FR2131299A5 (en) * 1971-06-26 1972-11-10 Abrasivi Mapelli Grottol

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100492854B1 (en) 2004-09-15 2005-06-02 세원테크 주식회사 Grinding wheel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1777051A1 (en) * 1968-08-28 1971-11-25 Fickert Kg Maschinen Und Schle Grinding segment for manufacturing a slip ring
DE2051898A1 (en) * 1970-06-22 1971-12-30 Veva, Luigi, Mailand (Italien) Grinding segment to form a grinding ring, mainly for working on marble and granite
CH523746A (en) * 1971-04-07 1972-06-15 Marra Donato Grinding body and use of the same in a surface grinding machine
FR2131299A5 (en) * 1971-06-26 1972-11-10 Abrasivi Mapelli Grottol

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1904271A1 *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2009288911B2 (en) * 2008-09-05 2016-07-07 Husqvarna Ab Double row abrasive disc
EP2337653A1 (en) * 2008-09-05 2011-06-29 Husqvarna AB Double row abrasive disc
US20110223845A1 (en) * 2008-09-05 2011-09-15 Huskvarna Ab Double row abrasive disc
EP2337653A4 (en) * 2008-09-05 2013-09-18 Husqvarna Ab Double row abrasive disc
WO2010027312A1 (en) 2008-09-05 2010-03-11 Husqvarna Ab Double row abrasive disc
US11161215B2 (en) 2008-09-05 2021-11-02 Husqvarna Ab Double row abrasive disc
WO2011039393A1 (en) * 2009-09-30 2011-04-07 Raquel Matilla Botella Multi-layer piece for polishing stone, ceramic ware, porcelain ware and for all types of paving and cladding
CN101934505A (en) * 2010-08-17 2011-01-05 何�轩 Grinding disc and high-speed rail bridge grinder provided with same
WO2014055031A1 (en) * 2012-10-05 2014-04-10 Scanmaskin Sverige Ab Holder arrangement for grinding tools
EP2903781A4 (en) * 2012-10-05 2016-06-01 Scanmaskin Sverige Ab Holder arrangement for grinding tools
FR3025447A1 (en) * 2014-09-05 2016-03-11 Mbh Dev ROTARY DISK WITH REMOVABLE ABRASIVE SEGMENTS
WO2017009524A1 (en) * 2015-07-16 2017-01-19 Mika Ahonen Apparatus for grinding a concrete floor surface
US10544598B2 (en) 2015-07-16 2020-01-28 Mika Ahonen Apparatus for grinding a concrete floor surface

Also Published As

Publication number Publication date
SE528916C2 (en) 2007-03-13
EP1904271A1 (en) 2008-04-02
SE0501695L (en) 2007-01-19
NO20076236L (en) 2008-02-15

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