EP3081337B1 - Disque de frottement avec noyau - Google Patents
Disque de frottement avec noyau Download PDFInfo
- Publication number
- EP3081337B1 EP3081337B1 EP16158947.8A EP16158947A EP3081337B1 EP 3081337 B1 EP3081337 B1 EP 3081337B1 EP 16158947 A EP16158947 A EP 16158947A EP 3081337 B1 EP3081337 B1 EP 3081337B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grinding wheel
- rough grinding
- core
- layer
- 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.)
- Active
Links
- 230000000087 stabilizing effect Effects 0.000 claims description 19
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 15
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 229910021532 Calcite Inorganic materials 0.000 claims description 7
- 239000010456 wollastonite Substances 0.000 claims description 7
- 229910052882 wollastonite Inorganic materials 0.000 claims description 7
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 6
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 6
- 239000005011 phenolic resin Substances 0.000 claims description 6
- 229920001568 phenolic resin Polymers 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 3
- 229910001610 cryolite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910052683 pyrite Inorganic materials 0.000 claims description 3
- 239000011028 pyrite Substances 0.000 claims description 3
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 claims description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims 2
- 239000010410 layer Substances 0.000 description 64
- 230000006641 stabilisation Effects 0.000 description 9
- 238000011105 stabilization Methods 0.000 description 9
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 7
- 230000002787 reinforcement Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000006004 Quartz sand Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000006061 abrasive grain Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- HVXCTUSYKCFNMG-UHFFFAOYSA-N aluminum oxygen(2-) zirconium(4+) Chemical compound [O-2].[Zr+4].[Al+3] HVXCTUSYKCFNMG-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000010431 corundum Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
Images
Classifications
-
- 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
- B24D7/02—Wheels in one piece
- B24D7/04—Wheels in one piece with reinforcing means
-
- 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
- B24D3/20—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 organic
- B24D3/28—Resins or natural or synthetic macromolecular compounds
-
- 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
- B24D7/14—Zonally-graded wheels; Composite wheels comprising different abrasives
-
- 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
- B24D7/18—Wheels of special form
Definitions
- the invention relates to a grinding disc with the features of the preamble of patent claim 1, such as from U.S. 2015/000206 A1 famous.
- Such a grinding wheel is known from practice and is suitable for rough grinding material surfaces of various materials. It comprises a disc-shaped base body which comprises a central recess for the direct or indirect connection of a drive shaft of a tool. A rotary axis passes through the central recess.
- the base body includes at least one grinding layer.
- the U.S. 2015/000206 A1 discloses an abrasive disc having an abrasive layer and a backing layer.
- the grinding layer consists of several layers, between which a separating layer is arranged.
- the previously known grinding wheel does not have satisfactory stability, particularly at high speeds. Stability of a grinding wheel means that it remains stiff even under high contact pressure. A stable grinding disc is easy to control so that a defined or even high removal rate can be achieved.
- the invention is based on the object of creating a grinding wheel of the type mentioned in the introduction, which is characterized by an improved structure and, in particular, has improved stability.
- the grinding disc according to the invention comprises a disc-shaped base body, which comprises a central recess, through which a rotary axis passes, for the direct or indirect connection of a drive shaft of a tool, and at least one grinding layer.
- the grinding wheel according to the invention has a stabilization core for stabilizing the grinding wheel, which is assigned to the at least one grinding layer and is peripherally adjacent to the central recess.
- the stabilization core has a higher strength than the at least one grinding layer.
- the base body has a reinforcing layer and at least two grinding layers, with a separating layer being arranged between two adjacent grinding layers.
- a core segment is assigned to each of the grinding layers.
- the core segments define the stabilization core and are connected to each other indirectly via the corresponding separation layer.
- the use of a core within the grinding disc allows further adaptation and improved stability.
- the core serves to stabilize the grinding wheel during its rotation.
- the stabilizing core can optimize the grinding wheel in terms of its stability without affecting the grinding-active areas, the grinding mixtures or the strength of the grinding wheel. This is because the stabilizing core absorbs the forces acting on the at least one grinding layer during grinding and transmits them evenly to the drive shaft of the tool. At the same time, the stabilization core transmits the forces emanating from a user via the drive shaft of the tool evenly to the at least one grinding layer.
- the stabilization core thus also serves as a power transmission element between the at least one grinding layer and the connection to a drive shaft of a tool.
- the advantages of the grinding disc according to the invention lie both in the concentration of mass in the area of its center of rotation and in the indirect power transmission between the at least one abrasive layer and the drive shaft of the tool. As a result, the grinding wheel always remains stable and easy to control, even with large forces or contact pressures and/or high speeds.
- the ratio of the outer radius of the stabilizing core to an outer radius of the grinding disc is between 2:50 and 25:50.
- the ratio is preferably 17:50. This ratio leads to optimum stability with the largest possible grinding surface at the same time.
- the base body has at least two grinding layers, with a separating layer being arranged between two adjacent grinding layers, the interaction with the stabilizing core results in advantages over known grinding wheels in the event that both the stability and the strength of the grinding wheel are to be optimized.
- a known grinding wheel an attempt is made to compensate for an adaptation and improvement in stability and strength by means of separating layers arranged between individual grinding layers.
- separating layers arranged between individual grinding layers.
- there is a target variable conflict between stability and strength since these two target variables influence each other.
- the use of a core in combination with separating layers allows further adjustment and improvement of stability and strength to be achieved separately from one another.
- the core serves to stabilize the grinding wheel during its rotation.
- the separating layer serves to strengthen the grinding wheel.
- the grinding layers can contain grinding active grains such as regular brown fused aluminum and derivatives, blue aluminum oxide (blue fired alumina), white fused aluminum oxide, zirconium aluminum oxide (zirconia alumina), silicon carbide, ceramic grain, pink aluminum oxide (pink fused alumina) and/or monocrystalline aluminum oxide (monocrystalline alumina).
- the grinding layers can contain supporting fillers such as polyaluminum fluoride, cryolite, pyrite, Calcite, wollastonite and/or graphite which may be bonded with phenolic resin systems.
- the at least one separating layer extends from the recess or a hub to the outer edge of the grinding wheel.
- the individual core segments are connected to one another indirectly via the corresponding separating layer.
- An abrasive layer and a core segment assigned to the corresponding abrasive layer are arranged in each case between adjacent separating layers. The stability of the grinding disc is ensured by the fact that the individual core segments together serve to strengthen the grinding disc and define the stabilizing core.
- the only figure shows a section through a grinding wheel according to the invention.
- the grinding wheel 1 shown in the drawing has a base body 3 with a layered structure.
- the base body 3 comprises a central recess 2 through which an axis of rotation 5 which lies in the center of rotation of the grinding wheel 1 extends.
- An insert 4 for fastening the grinding wheel 1 to a drive shaft of a tool is arranged in the recess 2 .
- a reinforcement layer 6 is arranged on the tool side of the grinding wheel facing the tool.
- the reinforcement layer 6 can comprise rutile, wollastonite, calcite and/or basalt, which can be bonded with phenolic resin.
- a grain size can be between 0.1 mm and 1.0 mm, preferably between 0.2 mm and 0.5 mm.
- the reinforcing layer 6 can include quartz sand.
- the reinforcement layer 6 high strength. It can include a net-like insert in order to further increase the stability of the grinding wheel 1 .
- the grinding wheel 1 also has two grinding layers 8a, 8b, which are arranged on the side of the reinforcing layer 6 facing away from the tool side.
- the grinding layers 8a, 8b can have abrasive grains, such as regular brown fused aluminum and derivatives, blue aluminum oxide (blue fired alumina), white aluminum oxide (white fused alumina), zirconium aluminum oxide (zirconia alumina), silicon carbide, ceramic grain (ceramic grain) , Corundum pink (pink fused alumina) and / or monocrystalline aluminum oxide (monocrystalline alumina) include.
- the abrasive layers may include supporting fillers such as polyaluminum fluoride, cryolite, pyrite, calcite, wollastonite, and/or graphite, which may be bonded with phenolic resin systems.
- a phenolic resin abrasive grain mixture is thus formed, to which various fillers and additives can be added.
- a separating layer 10 is arranged between the two grinding layers 8a, 8b.
- a further separating layer 10 is arranged between the reinforcing layer 6 and the abrasive layer 8a.
- the separating layers 10 are each formed from a glass fabric layer and serve to strengthen the grinding wheel 1.
- the separating layers 10 extend from an outer edge of the grinding wheel 1 to the central recess 2 or surround the central recess 2 in a ring shape.
- the grinding wheel 1 comprises a stabilizing core 12 , which adjoins the central recess 2 around the axis of rotation 5 of the grinding wheel 1 , or forms the edge of the central recess 2 in sections.
- Stabilizing core 12 may include rutile, wollastonite, calcite, and/or basalt, which may be phenolic resin bonded.
- a grain size can be between 0.1 mm and 1.0 mm, preferably between 0.2 mm and 0.5 mm.
- the reinforcing layer 6 can include quartz sand.
- the stabilizing core 12 has a higher strength than the grinding layers 8a, 8b.
- the stabilizing core 12 is formed from two core segments 12a, 12b and serves as a power transmission element between the two grinding layers 8a, 8b and the connection to the drive shaft of the tool.
- a core segment 12a, 12b of the stabilization core 12 is assigned to each abrasive layer 8a, 8b.
- the core segment 12a is between two adjacent separator layers 10 arranged.
- the core segment 12b borders on a separating layer 10 on the tool side and is open on the workpiece side, ie uncovered by a separating layer 10 . It follows from this that the separating layers 10 divide the stabilization core 12 into two core segments 12a, 12b.
- the two adjacent core segments 12a, 12b are connected to one another via the separating layer 10 arranged in between and define the stabilization core 12.
- the outer radius a of the stabilizing core 12 has a ratio of 17:50 to the outer radius b of the grinding wheel.
- the stabilizing core 12 has a constant radius over its thickness or in the axial direction of the grinding wheel.
- the central recess 2 is designed as a countersunk hub.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Claims (9)
- Meule à ébarber pour traiter des surfaces de matériaux, comprenant un corps de base (3) en forme de disque comportant un évidement (2) central qui est pénétré par un axe de rotation (5) pour relier directement ou indirectement un arbre d'entraînement d'un outil, au moins deux couches abrasives (8a, 8b) et une couche de renforcement (6) qui supporte les au moins deux couches abrasives (8a, 8b), et la meule à ébarber comprenant un noyau de stabilisation (12) pour stabiliser la meule à ébarber, ledit noyau de stabilisation (12) étant associé aux au moins deux couches abrasives (8a, 8b), étant adjacent à l'évidement (2) central de façon périphérique et ayant une résistance supérieure à celle des au moins deux couches abrasives (8a, 8b), une couche de séparation (10) étant toujours disposée entre deux couches abrasives (8a, 8b) adjacentes, caractérisée en ce qu'un segment de noyau (12a, 12b) est associé à chacune des couches abrasives (8a, 8b), lesdits segments de noyau (12a, 12b) définissant le noyau de stabilisation (12) et étant reliés indirectement l'un à l'autre par la couche de séparation (10) correspondante.
- Meule à ébarber selon la revendication 1, caractérisée en ce qu'un rapport du rayon extérieur (a) du noyau de stabilisation (12) à un rayon extérieur (b) de la meule à ébarber est compris entre 2 : 50 et 25 : 50, de préférence 17 : 50.
- Meule à ébarber selon l'une quelconque des revendications 1 ou 2, caractérisée en ce que le noyau de stabilisation (12) a un rayon extérieur (a) constant sur toute son épaisseur.
- Meule à ébarber selon l'une quelconque des revendications 1 à 3, caractérisée en ce que l'évidement (2) central est un moyeu noyé.
- Meule à ébarber selon l'une quelconque des revendications 1 à 4, caractérisée en ce que le noyau de stabilisation (12) comprend du rutile, de la wollastonite, de la calcite et du basalte qui sont liés à de la résine phénolique.
- Meule à ébarber selon l'une quelconque des revendications 1 à 5, caractérisée en ce que la couche de renforcement (6) comprend du rutile, de la wollastonite, de la calcite et du basalte qui sont liés à de la résine phénolique.
- Meule à ébarber selon l'une quelconque des revendications 1 à 6, caractérisée en ce que l'au moins une couche abrasive (8a, 8b) comprend des grains abrasives, tels que du corindon brun (regular brown fused alumina) et des dérivés, de l'oxyde d'aluminium bleu (blue fired alumina), du corindon supérieur blanc (white fused alumina), du corindon de zircone (zirconia alumina), du carbure de silicium, du grain céramique (ceramic grain), du corindon supérieur rose (pink fused alumina) et/ou de l'oxyde d'aluminium monocristalline (monocrystalline alumina), des agents de charge suspenseurs pouvant être prévus, tels que du fluorure de polyaluminium, du cryolithe, de la pyrite, de la calcite, de la wollastonite et/ou du graphite qui peuvent être liés par des systèmes de résine phénolique.
- Meule à ébarber selon l'une quelconque des revendications 1 à 7, caractérisée en ce que l'au moins une couche de séparation (10) comprend un tissu de verre.
- Meule à ébarber selon l'une quelconque des revendications 1 à 8, caractérisée en ce qu'une couche de séparation (10) est disposée entre la couche de renforcement (6) et les au moins deux couches abrasives (8a, 8b).
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI201631507T SI3081337T1 (sl) | 2015-04-02 | 2016-03-07 | Brusilni disk z jedrom |
HRP20220507TT HRP20220507T1 (hr) | 2015-04-02 | 2016-03-07 | Brusni kotač sa jezgrom |
RS20220341A RS63129B1 (sr) | 2015-04-02 | 2016-03-07 | Tocilo za grubo brušenje sa jezgrom |
PL16158947T PL3081337T3 (pl) | 2015-04-02 | 2016-03-07 | Ściernica z rdzeniem |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015004355 | 2015-04-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3081337A1 EP3081337A1 (fr) | 2016-10-19 |
EP3081337B1 true EP3081337B1 (fr) | 2022-02-16 |
Family
ID=55532143
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16158947.8A Active EP3081337B1 (fr) | 2015-04-02 | 2016-03-07 | Disque de frottement avec noyau |
Country Status (11)
Country | Link |
---|---|
US (2) | US20160288295A1 (fr) |
EP (1) | EP3081337B1 (fr) |
CA (1) | CA2924939C (fr) |
DK (1) | DK3081337T3 (fr) |
ES (1) | ES2910650T3 (fr) |
HR (1) | HRP20220507T1 (fr) |
HU (1) | HUE058349T2 (fr) |
PL (1) | PL3081337T3 (fr) |
PT (1) | PT3081337T (fr) |
RS (1) | RS63129B1 (fr) |
SI (1) | SI3081337T1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018130237A1 (fr) * | 2017-01-16 | 2018-07-19 | Klingspor Ag | Disque de dégrossissage comportant un noyau équipé d'au moins un agent additif à action abrasive |
EP3421178A1 (fr) | 2017-06-26 | 2019-01-02 | Dronco GmbH | Procédé de fabrication d'un élément abrasif, en particulier un disque abrasif rotatif et élément abrasif, en particulier un disque abrasif rotatif |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3545308A1 (de) * | 1985-12-20 | 1987-06-25 | Feldmuehle Ag | Schleifscheibe mit daempfung |
DE9420676U1 (de) * | 1994-12-24 | 1995-02-23 | Schleifmittel-Werk Karl Seiffert GmbH & Co., 40721 Hilden | Recyclefähige Schleifkörperzonen |
DE10359747A1 (de) * | 2003-12-19 | 2005-07-14 | August Rüggeberg Gmbh & Co. Kg | Schrupp-Schleifscheibe |
BRPI0923722A2 (pt) * | 2008-12-30 | 2017-07-11 | Saint Gobain Abrasives Inc | Ferramentas abrasivas coladas reforçadas |
US9242346B2 (en) * | 2012-03-30 | 2016-01-26 | Saint-Gobain Abrasives, Inc. | Abrasive products having fibrillated fibers |
EP4159371A1 (fr) * | 2013-06-28 | 2023-04-05 | Saint-Gobain Abrasives, Inc. | Article abrasif |
WO2016003940A1 (fr) * | 2014-06-29 | 2016-01-07 | Saint-Gobain Abrasives, Inc. | Article abrasif comprenant une partie centrale et un corps abrasif lié |
-
2016
- 2016-03-07 HU HUE16158947A patent/HUE058349T2/hu unknown
- 2016-03-07 EP EP16158947.8A patent/EP3081337B1/fr active Active
- 2016-03-07 PT PT161589478T patent/PT3081337T/pt unknown
- 2016-03-07 HR HRP20220507TT patent/HRP20220507T1/hr unknown
- 2016-03-07 ES ES16158947T patent/ES2910650T3/es active Active
- 2016-03-07 SI SI201631507T patent/SI3081337T1/sl unknown
- 2016-03-07 PL PL16158947T patent/PL3081337T3/pl unknown
- 2016-03-07 RS RS20220341A patent/RS63129B1/sr unknown
- 2016-03-07 DK DK16158947.8T patent/DK3081337T3/da active
- 2016-03-22 US US15/077,064 patent/US20160288295A1/en not_active Abandoned
- 2016-03-24 CA CA2924939A patent/CA2924939C/fr active Active
-
2019
- 2019-04-18 US US16/388,088 patent/US11235437B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
CA2924939A1 (fr) | 2016-10-02 |
PT3081337T (pt) | 2022-04-11 |
US20160288295A1 (en) | 2016-10-06 |
US20190240809A1 (en) | 2019-08-08 |
PL3081337T3 (pl) | 2022-06-06 |
RS63129B1 (sr) | 2022-05-31 |
ES2910650T3 (es) | 2022-05-13 |
US11235437B2 (en) | 2022-02-01 |
HUE058349T2 (hu) | 2022-07-28 |
CA2924939C (fr) | 2017-12-05 |
DK3081337T3 (da) | 2022-04-25 |
EP3081337A1 (fr) | 2016-10-19 |
SI3081337T1 (sl) | 2022-06-30 |
HRP20220507T1 (hr) | 2022-06-10 |
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