EP1306167A1 - Tool for surface roughing, in particular for flooring - Google Patents
Tool for surface roughing, in particular for flooring Download PDFInfo
- Publication number
- EP1306167A1 EP1306167A1 EP02016483A EP02016483A EP1306167A1 EP 1306167 A1 EP1306167 A1 EP 1306167A1 EP 02016483 A EP02016483 A EP 02016483A EP 02016483 A EP02016483 A EP 02016483A EP 1306167 A1 EP1306167 A1 EP 1306167A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sectors
- support
- tool
- flooring
- layer
- 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
Links
Images
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
- 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
- B24D7/063—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 with segments embedded in a matrix which is rubbed away during the grinding process
Definitions
- the present invention discloses a tool for surface roughing, in particular for flooring, of the type consisting of a support to be applied to a machine and of a layer made of an abrasive material fixed to such support, where the abrasive member consists of several diamond sectors fitted onto said support and buried into a mass of soft material, especially rubber.
- This configuration allows obtaining a tool capable of effectively machining the surface, performing an effective abrasive action without having these sectors damage the edges of ceramic or similar tiles.
- the mass of soft material where the diamond sectors are buried serves as a protection to prevent them from scratching the edges of the tiles or slabs forming the flooring, but allowing the diamond to scrape the surface quite deeply.
- the invention relates to the field of equipment for surface finishing tools, and in particular it relates to equipment for finishing flooring and the like.
- the machines used to this purpose are provided with a rotating member to which tools such as abrasive grinders or the like are applied, and which are placed into rotation laying against the material to be machined to perform roughing, smoothing and polishing.
- these machines comprise a frame mounted on wheels, and an electric motor that actuates a rotor with substantially vertical axis, to which a plate supporting several tools is applied.
- the tools consist of sectors made of an abrasive material, according to the type of finish to obtain.
- large grain abrasive sectors are used, capable of removing a certain amount of material from the flooring, so as to level and smooth it.
- These tools may exhibit a continuous surface, for example consisting of a plane disc or grain with circular crown, or of a series of sectors mounted one next to the other, onto a generally circular support.
- the tools consisting of more sectors sometimes exhibit disadvantages since if the operation is performed on a flooring consisting of tiles, stone slabs or the like, the sectors that rotate and strike against the edges of protruding tiles may chip or damage them.
- the present invention can be framed in this field, as it discloses a tool capable of solving the problems mentioned above and which consists of several diamond sectors fixed to a yielding support and buried into a layer of soft material, for example rubber and the like, which prevents the sectors from hitting against edges and corners of tiles, but which allows an effective surface roughing action, thanks to its elasticity and deformability features.
- the tool according to the invention comprises a support 1 suitable to be applied to a roughing/smoothing/polishing machine, an intermediate layer 2, and a tool, globally indicated with reference numeral 3, consisting of a support 4 to which several abrasive sectors 5 are fixed.
- Support 1 made of a resistant material provided with couplings for the application to a machine not shown in the figure, is made of metal, preferably of aluminium.
- the intermediate layer 2 consists of a layer of deformable material, in particular vulcanised rubber, applied to support 1 by a layer of anchoring material, schematically shown in the figure and indicated with reference numeral 6.
- Such intermediate layer made of soft and deformable material, is to allow the tool to slightly bend or, in any case, to follow and adjust to the unevenness of the surface to be smoothed.
- the active part of the tool consists of several sectors made of an abrasive material 5, preferably arranged as dial and fixed to a support made of resistant material sufficiently flexible to follow the deformation of the intermediate layer of vulcanised rubber.
- such support layer consists of a grid or a drilled plate or the like, to which sectors 5 are welded.
- Sectors 5 consist of an abrasive material, preferably diamond powder mixed with a metal binder, preferably a bronze- or cobalt-based alloy.
- the support layer 4 must be shaped as a grid or drilled since, according to a feature of the invention, the diamond sectors 5 are embedded into a layer made of a soft and deformable material, preferably a vulcanised rubber layer, which is then applied and made to adhere to the intermediate vulcanised rubber layer 2.
- a soft and deformable material preferably a vulcanised rubber layer
- the holes in the support plate 4 are therefore intended to allow this material to move to the opposite side and totally incorporate the support plate with the abrasive sectors.
- the sizes and amounts of diamond powder contained in the alloy may change based on the type of operation required.
- the sectors produced had plan dimensions of 24 x 10 millimetres and a height of 10 millimetres, and they were welded to a support consisting of a plate with an approximate thickness of 2 mm.
- This tool was applied to an aluminium support with a vulcanised rubber layer with a thickness from 4 to 6 millimetres arranged in between.
- the tool according to the invention is especially convenient to use since there is no risk of chipping floor coating tiles, as the hollow space between a pair of close sectors is filled with soft material, in particular vulcanised rubber, which has the dual function of totally filling the gaps between diamond sectors, thereby preventing them from hitting and damaging the side edge of tiles during rotation, and of serving as deformable support that allows the tool to tilt and adapt to any unevenness existing on the material to be smoothed.
- soft material in particular vulcanised rubber
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Floor Finish (AREA)
- Road Paving Structures (AREA)
- Road Repair (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Crushing And Grinding (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
Description
- The present invention discloses a tool for surface roughing, in particular for flooring, of the type consisting of a support to be applied to a machine and of a layer made of an abrasive material fixed to such support, where the abrasive member consists of several diamond sectors fitted onto said support and buried into a mass of soft material, especially rubber.
- This configuration allows obtaining a tool capable of effectively machining the surface, performing an effective abrasive action without having these sectors damage the edges of ceramic or similar tiles.
- In practice, the mass of soft material where the diamond sectors are buried serves as a protection to prevent them from scratching the edges of the tiles or slabs forming the flooring, but allowing the diamond to scrape the surface quite deeply.
- The invention relates to the field of equipment for surface finishing tools, and in particular it relates to equipment for finishing flooring and the like.
- As known, once the flooring has been laid, it requires levelling so as to complete finishing with a polishing operation, where required.
- The machines used to this purpose are provided with a rotating member to which tools such as abrasive grinders or the like are applied, and which are placed into rotation laying against the material to be machined to perform roughing, smoothing and polishing.
- Generally, these machines comprise a frame mounted on wheels, and an electric motor that actuates a rotor with substantially vertical axis, to which a plate supporting several tools is applied.
- The tools consist of sectors made of an abrasive material, according to the type of finish to obtain.
- For roughing operations, as said, large grain abrasive sectors are used, capable of removing a certain amount of material from the flooring, so as to level and smooth it.
- These tools may exhibit a continuous surface, for example consisting of a plane disc or grain with circular crown, or of a series of sectors mounted one next to the other, onto a generally circular support.
- However, the tools consisting of more sectors sometimes exhibit disadvantages since if the operation is performed on a flooring consisting of tiles, stone slabs or the like, the sectors that rotate and strike against the edges of protruding tiles may chip or damage them.
- This risk does not exist or is very limited with continuous-surface tools, such as round ones, which however exert a less effective action on the flooring, thereby requiring longer operating times to achieve the same results.
- The present invention can be framed in this field, as it discloses a tool capable of solving the problems mentioned above and which consists of several diamond sectors fixed to a yielding support and buried into a layer of soft material, for example rubber and the like, which prevents the sectors from hitting against edges and corners of tiles, but which allows an effective surface roughing action, thanks to its elasticity and deformability features.
- The present invention will now be described by way of a non-limiting example with reference to the attached figures, where:
- Figure 1 is a perspective view of the diamond sectors and of the relevant support in a tool according to the invention;
- Figure 2 is a perspective view of the complete tool;
- Figure 3 is an exploded view of the tool of figure 2;
- Figure 4 is a section of the tool of the previous figures.
- With reference to the attached figures, the tool according to the invention comprises a
support 1 suitable to be applied to a roughing/smoothing/polishing machine, anintermediate layer 2, and a tool, globally indicated withreference numeral 3, consisting of asupport 4 to which severalabrasive sectors 5 are fixed. -
Support 1, made of a resistant material provided with couplings for the application to a machine not shown in the figure, is made of metal, preferably of aluminium. - The
intermediate layer 2, according to the invention, consists of a layer of deformable material, in particular vulcanised rubber, applied to support 1 by a layer of anchoring material, schematically shown in the figure and indicated withreference numeral 6. - The purpose of such intermediate layer, made of soft and deformable material, is to allow the tool to slightly bend or, in any case, to follow and adjust to the unevenness of the surface to be smoothed.
- On the other hand, the active part of the tool consists of several sectors made of an
abrasive material 5, preferably arranged as dial and fixed to a support made of resistant material sufficiently flexible to follow the deformation of the intermediate layer of vulcanised rubber. - Preferably, such support layer consists of a grid or a drilled plate or the like, to which
sectors 5 are welded. -
Sectors 5 consist of an abrasive material, preferably diamond powder mixed with a metal binder, preferably a bronze- or cobalt-based alloy. - The
support layer 4 must be shaped as a grid or drilled since, according to a feature of the invention, thediamond sectors 5 are embedded into a layer made of a soft and deformable material, preferably a vulcanised rubber layer, which is then applied and made to adhere to the intermediatevulcanised rubber layer 2. - The holes in the
support plate 4 are therefore intended to allow this material to move to the opposite side and totally incorporate the support plate with the abrasive sectors. - Once assembled, the tool as a whole is as shown in figures 2 and 4.
- The sizes and amounts of diamond powder contained in the alloy may change based on the type of operation required.
- The Applicant has carried out several experiments and has proved that good results are obtained with sectors comprising approximately 50% of diamond powder with size ranging between 3 and 10 mm and 50% of bronze alloy.
- The sectors produced had plan dimensions of 24 x 10 millimetres and a height of 10 millimetres, and they were welded to a support consisting of a plate with an approximate thickness of 2 mm.
- Obviously, these indication are only provided by way of an example and for completeness of description, but a man skilled in the art will easily find the most appropriate parameters for the type of operation to perform.
- This tool was applied to an aluminium support with a vulcanised rubber layer with a thickness from 4 to 6 millimetres arranged in between.
- As already mentioned above, the tool according to the invention is especially convenient to use since there is no risk of chipping floor coating tiles, as the hollow space between a pair of close sectors is filled with soft material, in particular vulcanised rubber, which has the dual function of totally filling the gaps between diamond sectors, thereby preventing them from hitting and damaging the side edge of tiles during rotation, and of serving as deformable support that allows the tool to tilt and adapt to any unevenness existing on the material to be smoothed.
- It is understood that sizes, as well as materials used, can change according to the use requirements.
Claims (9)
- Tool for roughing surfaces and flooring, of the type consisting of a support to be fitted on a finishing machine to which several sectors are applied, consisting of grains made of an abrasive material mixed with a binder, characterised in that said sectors are buried in a layer of soft material, in particular vulcanised rubber.
- Tool according to claim 1, characterised in that said sectors are welded to a grid-shaped support or to a drilled support, the whole being buried into said vulcanised rubber layer.
- Tool according to claim 2, characterised in that between said abrasive members and said support to be fitted to the machine, it is provided with a layer of soft material, in particular vulcanised rubber.
- Tool according to claim 3, characterised in that said sectors consist of grains of abrasive material, in particular diamond powder, in a metal binder.
- Tool according to claim 4, wherein said metal binder is a bronze-based binder.
- Tool according to claim 4, wherein said metal binder is a cobalt-based binder.
- Tool for surface roughing, in particular for flooring, characterised in that it is provided with:a stiff support to be fitted on a machine;a layer of a soft material, in particular of vulcanised rubber;a support to which several diamond sectors are fixed, said support and said sectors being buried in a layer of yielding material, in particular vulcanised rubber, so that only the surface of said sectors emerges from said layer;
- Tool according to claim 7, characterised in that said sectors are welded to a drilled bidimensional support, such as a grid or the like.
- Tool for surface roughing, in particular for flooring, as described and illustrated.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITPC20010031 | 2001-10-29 | ||
IT2001PC000031A ITPC20010031A1 (en) | 2001-10-29 | 2001-10-29 | TOOL FOR ROUGHING SURFACES, IN PARTICULAR FOR FLOORING. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1306167A1 true EP1306167A1 (en) | 2003-05-02 |
EP1306167B1 EP1306167B1 (en) | 2010-10-13 |
Family
ID=11451733
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02016483A Expired - Lifetime EP1306167B1 (en) | 2001-10-29 | 2002-07-23 | Tool for surface roughing, in particular for flooring |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1306167B1 (en) |
AT (1) | ATE484360T1 (en) |
DE (1) | DE60237950D1 (en) |
ES (1) | ES2351687T3 (en) |
IT (1) | ITPC20010031A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008130317A1 (en) * | 2007-04-23 | 2008-10-30 | Htc Sweden Ab | Grinding holder in a machining device |
ITRM20080521A1 (en) * | 2008-10-02 | 2010-04-03 | Mattia Mauro Di | MOLA, METHOD AND KIT OF WHEELS FOR THE PROCESSING OF HARD STONES SUCH AS MARBLE, GRANITE AND THE LIKE. |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0147633A2 (en) * | 1983-12-24 | 1985-07-10 | Dr. Elbel Schleifmittel GmbH | Method of manufacturing elastic grinding bodies |
WO1991007902A1 (en) * | 1989-11-24 | 1991-06-13 | Home Hygiene Limited | Method of and means for treating a floor |
US5247765A (en) * | 1991-07-23 | 1993-09-28 | Abrasive Technology Europe, S.A. | Abrasive product comprising a plurality of discrete composite abrasive pellets in a resilient resin matrix |
WO1996026811A1 (en) * | 1995-02-27 | 1996-09-06 | Ferronato Sandro Giovanni Gius | Flexible abrasive member with permanent one way mould and method of making same |
-
2001
- 2001-10-29 IT IT2001PC000031A patent/ITPC20010031A1/en unknown
-
2002
- 2002-07-23 AT AT02016483T patent/ATE484360T1/en not_active IP Right Cessation
- 2002-07-23 ES ES02016483T patent/ES2351687T3/en not_active Expired - Lifetime
- 2002-07-23 DE DE60237950T patent/DE60237950D1/en not_active Expired - Lifetime
- 2002-07-23 EP EP02016483A patent/EP1306167B1/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0147633A2 (en) * | 1983-12-24 | 1985-07-10 | Dr. Elbel Schleifmittel GmbH | Method of manufacturing elastic grinding bodies |
WO1991007902A1 (en) * | 1989-11-24 | 1991-06-13 | Home Hygiene Limited | Method of and means for treating a floor |
US5247765A (en) * | 1991-07-23 | 1993-09-28 | Abrasive Technology Europe, S.A. | Abrasive product comprising a plurality of discrete composite abrasive pellets in a resilient resin matrix |
WO1996026811A1 (en) * | 1995-02-27 | 1996-09-06 | Ferronato Sandro Giovanni Gius | Flexible abrasive member with permanent one way mould and method of making same |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008130317A1 (en) * | 2007-04-23 | 2008-10-30 | Htc Sweden Ab | Grinding holder in a machining device |
US8475235B2 (en) | 2007-04-23 | 2013-07-02 | Htc Sweden Ab | Grinding holder in a machining device |
ITRM20080521A1 (en) * | 2008-10-02 | 2010-04-03 | Mattia Mauro Di | MOLA, METHOD AND KIT OF WHEELS FOR THE PROCESSING OF HARD STONES SUCH AS MARBLE, GRANITE AND THE LIKE. |
Also Published As
Publication number | Publication date |
---|---|
ITPC20010031A1 (en) | 2003-04-29 |
DE60237950D1 (en) | 2010-11-25 |
ES2351687T3 (en) | 2011-02-09 |
ATE484360T1 (en) | 2010-10-15 |
EP1306167B1 (en) | 2010-10-13 |
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