EP1669162B1 - Tête porte-meule pour une machine à meuler mobile et machine à meuler mobile équipée d'une telle tête porte-meule - Google Patents

Tête porte-meule pour une machine à meuler mobile et machine à meuler mobile équipée d'une telle tête porte-meule Download PDF

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Publication number
EP1669162B1
EP1669162B1 EP05111687A EP05111687A EP1669162B1 EP 1669162 B1 EP1669162 B1 EP 1669162B1 EP 05111687 A EP05111687 A EP 05111687A EP 05111687 A EP05111687 A EP 05111687A EP 1669162 B1 EP1669162 B1 EP 1669162B1
Authority
EP
European Patent Office
Prior art keywords
grinding
disc
plates
carrier
planet
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.)
Active
Application number
EP05111687A
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German (de)
English (en)
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EP1669162A1 (fr
EP1669162B9 (fr
Inventor
Sten Jeansson
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.)
HTC Sweden AB
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HTC Sweden AB
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Filing date
Publication date
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Publication of EP1669162B1 publication Critical patent/EP1669162B1/fr
Application granted granted Critical
Publication of EP1669162B9 publication Critical patent/EP1669162B9/fr
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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
    • 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
    • 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
    • B24B45/00—Means for securing grinding wheels on rotary arbors
    • B24B45/003—Accessories therefor
    • 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

Definitions

  • the present invention concerns a grinding head for a mobile grinding machine for grinding stone floors, which machine comprises a body supporting a drive motor, a planet disc mounted on the body and a multiplicity of grinding heads mounted on the planet disc, where the planet wheel is rotatable by means of the motor about a central, substantially vertical rotation axis and the grinding heads in relation to the planet wheel are rotatable about substantially vertical planet axes which are distributed around said rotation axis, wherein the grinding head comprises a carrier that is designed to be rotated by means of a motor, and a grinding disc that is designed to be driven by the carrier by means of a coupling element established between the carrier and the grinding disc.
  • W094/08752 discloses a grinding machine which is intended for precise flat grinding of stone floors, in particular those made of concrete.
  • the grinding machine comprises a multiplicity of grinding heads which each comprise a carrier designed to be rotated by the motor, and each a grinding disc designed to be driven by the carrier by means of a coupling element established between the carrier and the grinding disc.
  • the coupling element between the carrier and the grinding disc normally comprises a fibre-reinforced pad which has opposing sides connected with the carrier and grinding disc respectively. The pad allows, in the thickness direction of the pad, the transfer of axial pressure via the pad against the floor support and in the width direction of the pad, a transfer of rotation forces via the fibre reinforcement.
  • the cloth however has the limitation that in its thickness direction it can only absorb minimum angular deviations. Even if absolute flatness is not required on the abraded floor, this disadvantage means that the grinding must largely continue until absolute flatness has been achieved as it is not otherwise ensured that the entire floor surface has been abraded.
  • the object of the invention is to achieve a grinding head according to the introduction which allows the transfer of high torque and absorbs large angular deviations.
  • the coupling element of the aforementioned grinding head comprises a multiplicity of plates which are stacked upon each other, each with its central opening and at least four drain holes distributed around this, and a pressure spring which extends through the central opening of the plates and by means of screw elements is tensioned between the carrier and the grinding disc, which screw elements extend through the drain holes of the plates and are arranged to connect, alternately in a circular direction around the central opening of the plates, the carrier with the plate nearest the grinding disc and the grinding disc with the plate nearest to the carrier.
  • the coupling element at the drain holes of the plates has spacer elements at least between the plates, which spacer elements are suitably annular metal washers which have a rounded outer edge.
  • the advantage of the spacer element is that by reducing the contact surfaces between the plates, the wear between these is also reduced and hence the flexibility of the coupling element increased.
  • the advantage with the special metal washers is that they eliminate any buckling points for the plates which could otherwise over time lead to material fatigue.
  • the compression spring is advantageously a substantially circular cylindrical block of elastomer material as such a solution is both cheap and durable.
  • the compression spring can also be made of metal such as a coil spring or spring washer.
  • the plates are suitably annular and have projecting lugs in which are formed the drain holes, whereby the contour between said lugs advantageously has the form of an inward curve towards the central opening of the plate.
  • the annular plates with a narrower part between the drain holes give good flexibility for the coupling element at the same time as the projecting lugs give good strength around the drain holes, both these properties being best achieved using the said contour in the form of an inward curve. It is also seen that for strength reasons it is suitable always to leave intact plate material in a straight line between two adjacent drain holes.
  • the carrier is formed as a circular plate in which are formed alternately screw holes for connection with the screw elements connected with the plate nearest the grinding disc, and recesses for clearance of the screw elements connected with the plate nearest the holder.
  • screw elements which comprise a screw head, a circular cylindrical part connected thereto which has a length adapted to the height of the stack of plates, a threaded part which has a smaller diameter than the circular cylindrical part and a nut which can be screwed onto the threaded part. Screw elements formed in this way ensure in a simple manner that after mounting, the plate elements used are clamped with the correct force.
  • the preferred embodiment of the grinding head according to the invention is intended for a mobile grinding machine 1 for grinding a stone floor, where this does not exclusively concern a concrete floor.
  • the grinding machine 1 comprises a body 2 to which is coupled a handle arrangement not shown and which carries a drive motor 3, a circular planet disc 4 mounted in the body 2, and three grinding heads 5-7 that are mounted on the planet disc 4 and have an underside intended for mounting of a grinding tool not shown.
  • the planet disc 4 is rotatable by means of the motor 2 in Fig. 2 clockwise around a central, substantially vertical rotation axis r, and the grinding heads 5-7 are rotatable relative to the planet disc 4 in Fig. 2 counterclockwise about substantially vertical planet axes p1-p3 which are evenly distributed around the said rotation axis r.
  • Each grinding head 5-7 comprises a carrier 8 which is designed to rotate by means of the motor 2 and a grinding disc 9 which is arranged to be driven by the carrier 8 by means of a coupling element 10 established between the carrier 8 and the grinding disc 9.
  • the coupling element 10 comprises four plates 11-13 which are stacked on each other and each have their central opening 14 and six drain holes 15 evenly distributed around this, and a compression spring 16 in the form of a circular cylindrical block of elastomer material which extends through the central opening 14 of the plates 11-13 and by means of the screw elements 17 is tensioned between the carrier 8 and the grinding disc 9.
  • screw elements 17 extend through the drain holes 15 of the plates 11-13 and are arranged to connect alternately, in a circular direction around the central opening 14 of the plates 11-13, the carrier 8 with the plate 13 nearest the grinding disc 9 and the grinding disc 9 with the plate 13 nearest the carrier 8.
  • the coupling element 10, at the drain holes 15 of the plates 11-13 has spacer elements 18 at connecting points between the carrier 8 and the plate 11 closest to this, between the plates 11-13 as such and at the connecting points between the grinding disc 9 and the plate 13 closest to this.
  • the spacer elements 18 are constituted in particular by annular metal washers which have rounded outer edges so that no buckling of the plates 11-13 can occur around the spacer elements 18 when the plates 11-13 are mutually sprung.
  • the plates 11-13 as such are totally identical and in the preferred embodiment are four in number. This number is not however compulsory but is selected according to the material quality of the plates 11-13, for example spring steel, and the material thickness e.g. 0.5mm, and where applicable also with regard to their diameter and the forces to be transmitted.
  • the plates 11-13 are annular and have a polygonal base shape with projecting lugs 19 located in the corners of the polygon and in which are formed drain holes 15, and between the lugs 19 a contour in the form of a curve 20 curving in towards the central opening 14 of the plates 11-13. As a result great strength is achieved due to the amount of material at the drain holes 15, and maximum flexibility between these where the curve 20 draws closest to the central opening 14.
  • the carrier 8 is as shown structured as a circular plate in which are formed alternately screw holes 21 for connection to the screw elements 17 connected with the plate 13 nearest the disc 9, and recesses 22 for clearance of the screw elements 17 connected with the plate 11 nearest the body 8. Also in the grinding disc 9 are formed alternately screw holes 23 for connection with the screw elements 17 connected with the plate 11 nearest the carrier 8, and recesses 24 for clearance of the screw elements 17 connected to the plate 13 nearest the grinding disc 9.
  • the term clearance in this context means that the recesses 22 and 24 are structured so that the screw element 17 projecting therein can be fully held without coming into contact with the respective recess 22, 24.
  • the screw elements 17 are preferably screws with a cylindrical screw head of the internal hexagon type, a circular cylindrical part 26 connected thereto which has a length adapted to the height h of the stack of plates 11-13, a threaded part 27 which has a smaller diameter than the circular cylindrical part 26, and a nut 28 which is screwed to the threaded part 27.
  • a screw head of the internal hexagon type is a suitable choice as this is easy to screw in and out even as shown when countersunk into a screw hole 21, 23 with a stepped bore.
  • a circular cylindrical part 26 with a precisely defined length can contribute to ensure even quality in connection with the mounting of the coupling element 10.
  • the nuts 28 to be selected of the self-locking type.
  • the arrangement according to the invention can where applicable be modified in any way within the context of the claims.
  • the form of the plates 11-13 can be different to that shown on the drawings, the number of drain holes 15 can be both greater and lesser, and the carrier 8 can for example be star-shaped.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Claims (11)

  1. Tête porte-meule pour une machine à meuler mobile (1) destinée au meulage de sols en pierre, ladite machine à meuler (1) comprenant un corps (2) supportant un moteur d'entraînement (3), un disque planétaire (4) monté dans le corps (2) et une pluralité de têtes porte-meule (5-7) montées sur le disque planétaire (4), dans laquelle on peut faire tourner le disque planétaire (4) à l'aide du moteur (3) autour d'un axe de rotation sensiblement vertical (r), et on peut faire tourner les têtes porte-meule (5-7) par rapport au disque planétaire (4) autour d'axes planétaires sensiblement verticaux (p1-p3) qui sont distribués autour de l'axe de rotation (r), la tête porte-meule (5-7) comprenant un élément porteur (8) qui est prévu pour être mis en rotation à l'aide du moteur (3), et un disque de meulage (9) qui est prévu pour être entraîné par l'élément porteur (8) à l'aide d'un élément de couplage (10) disposé entre l'élément porteur (8) et le disque de meulage (9), caractérisée en ce que l'élément de couplage (10) comprend une pluralité de plaquettes (11-13) empilées les unes sur les autres et chacune présentant une ouverture centrale (14) et au moins quatre orifices d'écoulement (15) distribués autour de cette dernière, et un ressort de compression (16) qui s'étend à travers l'ouverture centrale (14) des plaquettes (11-13) et qui, au moyen d'éléments à vis (17), est bloqué entre l'élément porteur (8) et le disque de meulage (9), lesdits éléments à vis (17) se prolongeant à travers les orifices d'écoulement (15) des plaquettes (11-13) et étant disposés de telle manière à relier, de manière alternée dans un sens circulaire autour de l'ouverture centrale (14) des plaquettes (11-13), l'élément porteur (8) à la plaquette (13) la plus proche du disque de meulage (9) et le disque de meulage (9) à la plaquette (11) la plus proche de l'élément porteur (8).
  2. Tête porte-meule selon la revendication 1, caractérisée en ce que l'élément de couplage (10) au niveau des orifices d'écoulement (15) des plaquettes (11-13) comporte des éléments d'écartement (18) au moins entre les plaquettes (11-13).
  3. Tête porte-meule selon la revendication 2, caractérisée en ce que les éléments d'écartement (18) comprennent des rondelles annulaires métallique présentant des bords extérieurs arrondis.
  4. Tête porte-meule selon l'une quelconque des revendications 1-3, caractérisée en ce que le ressort de compression (16) est sous forme d'un bloc cylindrique sensiblement circulaire en élastomère
  5. Tête porte-meule selon l'une quelconque des revendications 1-4, caractérisée en ce que les plaquettes (11-13) sont annulaires et présentent des pattes en saillie (19) dans lesquelles sont ménagés les orifices d'écoulement (15).
  6. Tête porte-meule selon la revendication 5, caractérisée en ce que le contour des plaquettes (11-13) entre lesdites pattes (19) a la forme d'une courbe (20) incurvée vers l'intérieur en direction de l'ouverture centrale (14) des plaquettes (11-13).
  7. Tête porte-meule selon l'une quelconque des revendications 1-6, caractérisée en ce que l'élément porteur (8) est configuré sous forme d'une plaque circulaire dans laquelle sont ménagés de manière alternée des trous de vis (21) afin d'assurer une connexion aux éléments à vis (17) reliés à la plaquette (13) la plus proche du disque de meulage (9), et des évidements (22) procurant le jeu nécessaire pour les éléments à vis (17) connectés à la plaquette (11) la plus proche de l'élément porteur (8).
  8. Tête porte-meule selon l'une quelconque des revendications 1-7, caractérisée en ce que dans le disque de meulage (9) sont ménagés de manière alternée des trous de vis (23) afin d'assurer une connexion aux éléments à vis (17) reliés à la plaquette (11) la plus proche de l'élément porteur (8), et des évidements (24) procurant le jeu nécessaire pour les éléments à vis (17) connectés à la plaquette (13) la plus proche du disque de meulage (9).
  9. Tête porte-meule selon la revendication 7 ou 8, caractérisée en ce que les trous de vis (21, 23) sont fraisés.
  10. Tête porte-meule selon l'une quelconque des revendications 1-9, caractérisée en ce que les éléments à vis (17) sont des vis comprenant une tête de vis (25), une partie cylindrique circulaire (26) reliée à cette dernière et dont la longueur est adaptée à la hauteur (h) de la pile de plaquettes (11-13), une partie filetée (27) de diamètre inférieur à celui de la partie cylindrique circulaire (26), et un écrou (28) qui peut être vissé sur la partie filetée (27).
  11. Machine à meuler mobile destinée au meulage d'un sol en pierre, ladite machine à meuler (1) comprenant un corps (2) supportant un moteur d'entraînement (3), un disque planétaire (4) monté dans le corps (2), et une pluralité de têtes porte-meule (5-7) montées sur le disque planétaire (4), caractérisée en ce que l'on peut faire tourner le disque planétaire (4) à l'aide du moteur (2) autour d'un axe de rotation central et sensiblement vertical (r), et que l'on peut faire tourner les têtes porte-meule (5-7) associées au disque planétaire (4) autour d'axes planétaires sensiblement verticaux (p1-p3) qui sont distribués autour dudit axe de rotation (r), caractérisée en ce qu'elle comprend la tête porte-meule (5-7) conforme à l'une quelconque des revendications 1-10.
EP05111687A 2004-12-10 2005-12-05 Tête porte-meule pour une machine à meuler mobile et machine à meuler mobile équipée d'une telle tête porte-meule Active EP1669162B9 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0403011A SE528858C2 (sv) 2004-12-10 2004-12-10 Sliphuvud för en mobil slipmaskin samt mobil slipmaskin och kopplingsorgan för en mobil slipmaskin

Publications (3)

Publication Number Publication Date
EP1669162A1 EP1669162A1 (fr) 2006-06-14
EP1669162B1 true EP1669162B1 (fr) 2008-03-19
EP1669162B9 EP1669162B9 (fr) 2008-09-03

Family

ID=33550632

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05111687A Active EP1669162B9 (fr) 2004-12-10 2005-12-05 Tête porte-meule pour une machine à meuler mobile et machine à meuler mobile équipée d'une telle tête porte-meule

Country Status (5)

Country Link
EP (1) EP1669162B9 (fr)
AT (1) ATE389508T1 (fr)
AU (1) AU2005237127A1 (fr)
DE (1) DE602005005425T2 (fr)
SE (1) SE528858C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103909467A (zh) * 2014-03-24 2014-07-09 博深工具股份有限公司 一种研磨设备用支点限位两级浮动式柔性保持机构

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE0601337L (sv) * 2006-06-15 2007-12-16 Htc Sweden Ab Förfarande för åstadkommande av en förbättrad vägbeläggning, användning av ett slipaggregat för renovering av en vägbana samt för sådan renovering avsett redskap och förfarande
EP1985876B1 (fr) 2007-04-23 2011-06-08 HTC Sweden AB Support de rectificateur dans un dispositif d'usinage
EP2394784B1 (fr) * 2010-06-09 2012-11-28 Design Technologies LLC Tête à disque rotatif en machine de traitement des sols comprenant ladite tête de disque
SE534947C2 (sv) * 2010-09-03 2012-02-28 Scanmaskin Sverige Ab Flexibelt lagrad slipskiva
CN103551958B (zh) * 2013-10-28 2016-03-30 博深工具股份有限公司 一种浮动式研磨保持机构
USD858592S1 (en) * 2018-01-19 2019-09-03 Onfloor Technologies, L.L.C. Driver disc cushion mount for a floor grinder or sander
EP3972779A1 (fr) * 2019-05-23 2022-03-30 3M Innovative Properties Company Fixation d'accessoire pour ponceuse orbitale excentrique
NL2025070B1 (en) * 2020-03-06 2021-10-14 Johannes Lagerwaard Edward Floor sanding device, floor treatment plate and method for sanding a floor
CN111546159B (zh) * 2020-06-08 2021-06-25 上海高仙自动化科技发展有限公司 抛光头组件及石材抛光机器人

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1928390A (en) * 1932-05-28 1933-09-26 American Floor Surfacing Mach Planetary type surfacing machine
GB2235367A (en) * 1989-09-01 1991-03-06 Unilever Plc Driving disc for floor treating machine
SE501448C2 (sv) * 1992-10-22 1995-02-20 Haakan Thysell Anordning vid en mobil slipmaskin för slipning av stengolv

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103909467A (zh) * 2014-03-24 2014-07-09 博深工具股份有限公司 一种研磨设备用支点限位两级浮动式柔性保持机构
CN103909467B (zh) * 2014-03-24 2019-01-04 博深工具股份有限公司 一种研磨设备用支点限位两级浮动式柔性保持机构

Also Published As

Publication number Publication date
DE602005005425D1 (de) 2008-04-30
EP1669162A1 (fr) 2006-06-14
SE0403011D0 (sv) 2004-12-10
DE602005005425T2 (de) 2009-04-16
SE528858C2 (sv) 2007-02-27
ATE389508T1 (de) 2008-04-15
EP1669162B9 (fr) 2008-09-03
AU2005237127A1 (en) 2006-06-29
SE0403011L (sv) 2006-06-11

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