US20160288295A1 - Rough Grinding Wheel Comprising A Core - Google Patents
Rough Grinding Wheel Comprising A Core Download PDFInfo
- Publication number
- US20160288295A1 US20160288295A1 US15/077,064 US201615077064A US2016288295A1 US 20160288295 A1 US20160288295 A1 US 20160288295A1 US 201615077064 A US201615077064 A US 201615077064A US 2016288295 A1 US2016288295 A1 US 2016288295A1
- Authority
- US
- United States
- Prior art keywords
- grinding wheel
- rough grinding
- abrasive
- wheel according
- core
- 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.)
- Abandoned
Links
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
A rough grinding wheel for processing material surfaces includes a wheel-shaped base body having a central recess penetrated by an axis of rotation for direct or indirect connection to a drive shaft of a tool. The rough grinding wheel has a stabilizing core stabilizing the rough grinding wheel. The stabilizing core is associated with at least one abrasive layer circumferentially adjacent to the central recess. The stabilizing core has a higher strength than the at least one abrasive layer.
Description
- This application claims the priority benefit of German Patent Application No. 10 2015 004 355.2 filed Apr. 2, 2015. The contents of which is hereby incorporated by reference as if set forth in its entirety herein.
- Not applicable.
- The invention relates to a rough grinding wheel.
- A rough grinding wheel of this kind is known from practice and is suitable for rough grinding of material surfaces of various materials. It comprises a wheel-shaped base body comprising a central recess for direct or indirect connection to a drive shaft of a tool. The central recess is penetrated by an axis of rotation. Furthermore, the base body comprises at least one abrasive layer.
- The rough grinding wheel known to date does not exhibit satisfactory stability in particular at high speeds. A stable rough grinding wheel is a rough grinding wheel that stays stiff even at high contact pressure. A stable rough grinding wheel is easy to control, making it possible to achieve a defined or high stock removal rate.
- The invention is based on the object of providing a rough grinding wheel of the kind mentioned above that is characterized by an improved structure and that in particular exhibits improved stability. This object is attained in an embodiment of the invention by the rough grinding wheel disclosed herein.
- The rough grinding wheel according to the invention comprises a wheel-shaped base body comprising a central recess penetrated by an axis of rotation for direct or indirect connection to a drive shaft of a tool and comprising at least one abrasive layer. The rough grinding wheel according to the invention is characterized by a stabilizing core for stabilizing the rough grinding wheel, said stabilizing core being associated with the at least one abrasive layer and being circumferentially adjacent to the central recess. Furthermore, the stabilizing core has higher strength than the at least one abrasive layer.
- Compared to the known rough grinding wheel, the stability can be further adapted and improved by using a core within the rough grinding wheel. This is because the core serves to stabilize the rough grinding wheel while the latter rotates.
- Especially in the area of the central recess, where stresses due to the grinding process, such as rotation forces and lateral loads, concentrate, the stabilizing core can optimize the rough grinding wheel in terms of its stability without affecting the abrasive areas, the abrasive mixtures or the strength of the rough grinding wheel. This is because the stabilizing core absorbs forces acting on the at least one abrasive layer during grinding and transmits them evenly to the drive shaft of the tool. In the same way, the stabilizing core evenly transmits the forces exerted by a user to the at least one abrasive layer via the drive shaft of the tool. Thus, the stabilizing core additionally serves as a force transmission element between the at least one abrasive layer and the connection to a drive shaft of a tool. The advantages of the rough grinding wheel according to the invention rest both in the concentration of mass in the area of its center of rotation and in the indirect transmission of forces between the at least one abrasive layer and the drive shaft of the tool. In this way, the rough grinding wheel stays stable and easily controllable at all times even in case of high applied forces and contact pressures and/or at high speeds.
- In a preferred embodiment of the rough grinding wheel according to the invention, a ratio of the outer radius of the stabilizing core to an outer radius of the rough grinding wheel is between 2:50 and 25:50. Preferably, the ratio is 17:50. This ratio leads to optimal stability and to a largest possible abrasive surface at the same time.
- It is conceivable that the base body has at least two abrasive layers, a separating layer being arranged between adjacent abrasive layers. In this way, advantages arise in combination with the stabilizing core compared to known rough grinding wheels for the case in which both stability and strength of the rough grinding wheel are to be optimized. This is because in a known rough grinding wheel, one tries to compensate an adaption and improvement of stability and strength by means of separating layers arranged between individual abrasive layers. However, this leads to a target value conflict between stability and strength because these two target values influence each other. Compared to the known rough grinding wheel, further adaption and improvement of stability and strength can be achieved separately by using a core in combination with separating layers. This is because the core serves to stabilize the rough grinding wheel while the latter rotates. The separating layer, on the other hand, benefits the strength of the rough grinding wheel. In this way, both target values can be optimized or maximized independently of each other so as to ensure improved product properties.
- The abrasive layers may contain various fillers and additives. The abrasive layers may comprise abrasive grits, such as regular brown fused alumina and derivatives, blue fired alumina, white fused alumina, zirconia alumina, silicon carbide, ceramic grain, pink fused alumina and/or monocrystalline alumina. Furthermore, the abrasive layers may comprise supporting fillers, such as polyaluminum fluoride, cryolite, pyrite, calcite, wollastonite and/or graphite, which may be bonded by means of phenolic resin systems.
- Furthermore, a core segment defining the stabilizing core can be associated with at least one of the abrasive layers. In this way, it is possible to form the rough grinding wheel in layers without forgoing the advantages of the invention. In this embodiment, at least one separating layer thus extends from the recess or from a hub to the outer edge of the rough grinding wheel. The individual cores segments are connected to each other either directly via recesses in the corresponding separating layer or indirectly via the corresponding separating layer. An abrasive layer and a cores segment associated with the corresponding abrasive layer are arranged between adjacent separating layers. The stability of the rough grinding wheel is ensured in that the individual cores segments together benefit the strength of the rough grinding wheel and define the stabilizing core.
- Other advantages and advantageous embodiments of the subject-matter of the invention can be taken from the description, the drawing and the claims.
- An embodiment example of a rough grinding wheel according to the invention is illustrated in the drawing in a schematically simplified manner and will be explained in more detail in the following description.
-
FIG. 1 shows a section through a rough grinding wheel incorporating the present invention. - The rough grinding wheel 1 illustrated in the drawing comprises a
base body 3 having a layered structure. Thebase body 3 comprises acentral recess 2 penetrated by an axis ofrotation 5 located in the center of rotation of the rough grinding wheel 1. Aninsert 4 for attaching the rough grinding wheel 1 to a drive shaft of a tool is arranged in therecess 2. A reinforcinglayer 6 is arranged on the tool side of the rough grinding wheel 1 facing toward the tool. The reinforcinglayer 6 may comprise rutile, wollastonite, calcite and/or basalt, which may be phenolic resin-bonded. A grain size may be between 0.1 mm to 1.0 mm, preferably between 0.2 mm and 0.5 mm. Furthermore, the reinforcinglayer 6 may comprise quartz sand. Thus, the reinforcinglayer 6 has high strength. It may comprise a net-like interlining in order to further increase the stability of the rough grinding wheel 1. - Furthermore, the rough grinding wheel 1 comprises two
abrasive layers layer 6. Theabrasive layers separating layer 10 is arranged between the twoabrasive layers separating layer 10 is arranged between the reinforcinglayer 6 andabrasive layer 8 a. Each of the separating layers 10 is formed by a glass tissue layer and benefits the strength of the rough grinding wheel 1. The separating layers 10 extend from an outer edge of the rough grinding wheel 1 to thecentral recess 2 and annularly surround thecentral recess 2. - Furthermore, the rough grinding wheel 1 comprises a stabilizing
core 12 surrounding the axis ofrotation 5 of the rough grinding wheel 1 and being adjacent to thecentral recess 2 and, in sections, forming the edge of thecentral recess 2. The stabilizingcore 12 may comprise rutile, wollastonite, calcite and/or basalt, which may be phenolic resin-bonded. A grain size may be between 0.1 mm to 1.0 mm, preferably between 0.2 mm and 0.5 mm. Furthermore, the reinforcinglayer 6 may comprise quartz sand. The stabilizingcore 12 has higher strength than theabrasive layers core 12 is formed by twocore segments abrasive layers - A
core segment core 12 is associated with eachabrasive layer Core segment 12 a is arranged between two separatinglayers 10 adjacent thereto.Core segment 12 b is adjacent to aseparating layer 10 at the tool side and is open, i.e. not covered by aseparating layer 10, at the side facing the work piece. In consequence, the separating layers 10 divide the stabilizingcore 12 into twocore segments adjacent core segments separating layer 10 and define the stabilizingcore 12. - The outer radius a of the stabilizing
core 12 has a ratio of 17:50 to the outer radius b of the rough grinding wheel 1. Furthermore, the stabilizingcore 12 has a constant radius across its thickness and in the axial direction of the rough grinding wheel 1. - To ensure an optimal connection to a tool, the
central recess 2 is realized as a recessed hub.
Claims (16)
1. A rough grinding wheel for processing material surfaces, said grinding wheel comprising:
a wheel-shaped base body including a central recess penetrated by an axis of rotation for direct or indirect connection to a drive shaft of a tool and comprising
at least one abrasive layer fixed to said base body; and
a stabilizing core stabilizing the rough grinding wheel, said stabilizing core being associated with the at least one abrasive layer, circumferentially adjacent to the central recess, and having higher strength than the at least one abrasive layer.
2. The rough grinding wheel according to claim 1 , in which a ratio of an outer radius (a) of the stabilizing core to an outer radius (b) of the rough grinding wheel is between 2:50 and 25:50.
3. The rough grinding wheel according to claim 1 , in which the stabilizing core has a constant outer radius (a) across its thickness.
4. The rough grinding wheel according to claim 1 , including at least two abrasive layers and a separating layer, said separating layer being arranged between adjacent abrasive layers of said at least two abrasive layers.
5. The rough grinding wheel according to claim 4 , in which a core segment defining the stabilizing core is associated with at least one of the abrasive layers.
6. The rough grinding wheel according to claim 1 , in which the stabilizing core is continuous in a direction of the axis of rotation.
7. The rough grinding wheel according to claim 1 , in which the base body includes a reinforcing layer supporting the at least one abrasive layer.
8. The rough grinding wheel according to claim 1 , in which the central recess is a recessed hub.
9. The rough grinding wheel according to claim 1 , in which the stabilizing core includes phenolic resin-bonded rutile, wollastonite, calcite and basalt.
10. The rough grinding wheel according to claim 7 , in which the reinforcing layer includes phenolic resin-bonded rutile, wollastonite, calcite and basalt.
11. The rough grinding wheel according to claim 1 , in which the at least one abrasive layer includes abrasive grits.
12. The rough grinding wheel according to claim 4 , in which the at least one separating layer includes a glass fabric.
13. The rough grinding wheel according to claim 2 , in which the ratio of the outer radius (a) of the stabilizing core to the outer radius (b) of the rough grinding wheel is about 17:50.
14. The rough grinding wheel according to claim 11 , in which the abrasive grits is selected from a group consisting of regular brown fused alumina and derivatives, blue fired alumina, white fused alumina, zirconia alumina, silicon carbide, ceramic grain, pink fused alumina, and monocrystalline alumina.
15. The rough grinding wheel according to claim 11 , in which the abrasive grits includes supporting fillers selected from a group consisting of polyaluminum fluoride, cryolite, pyrite, calcite, wollastonite, and graphite.
16. The rough grinding wheel according to claim 11 , in which the abrasive grits is bonded by a phenolic resin system.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16/388,088 US11235437B2 (en) | 2015-04-02 | 2019-04-18 | Rough grinding wheel comprising a core |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015004355 | 2015-04-02 | ||
DE102015004355.2 | 2015-04-02 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/388,088 Continuation US11235437B2 (en) | 2015-04-02 | 2019-04-18 | Rough grinding wheel comprising a core |
Publications (1)
Publication Number | Publication Date |
---|---|
US20160288295A1 true US20160288295A1 (en) | 2016-10-06 |
Family
ID=55532143
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/077,064 Abandoned US20160288295A1 (en) | 2015-04-02 | 2016-03-22 | Rough Grinding Wheel Comprising A Core |
US16/388,088 Active 2036-09-14 US11235437B2 (en) | 2015-04-02 | 2019-04-18 | Rough grinding wheel comprising a core |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/388,088 Active 2036-09-14 US11235437B2 (en) | 2015-04-02 | 2019-04-18 | Rough grinding wheel comprising a core |
Country Status (11)
Country | Link |
---|---|
US (2) | US20160288295A1 (en) |
EP (1) | EP3081337B1 (en) |
CA (1) | CA2924939C (en) |
DK (1) | DK3081337T3 (en) |
ES (1) | ES2910650T3 (en) |
HR (1) | HRP20220507T1 (en) |
HU (1) | HUE058349T2 (en) |
PL (1) | PL3081337T3 (en) |
PT (1) | PT3081337T (en) |
RS (1) | RS63129B1 (en) |
SI (1) | SI3081337T1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11407086B2 (en) | 2017-06-26 | 2022-08-09 | Dronco Gmbh | Method of manufacturing an abrasive member, in particular rotary abrasive disc, and abrasive member, in particular rotary abrasive disc |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018130237A1 (en) * | 2017-01-16 | 2018-07-19 | Klingspor Ag | Roughing disk with a core comprising at least one grinding additive |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130305614A1 (en) * | 2012-03-30 | 2013-11-21 | Anthony C. Gaeta | Abrasive products having fibrillated fibers |
US20150000206A1 (en) * | 2013-06-28 | 2015-01-01 | Saint-Gobain Abrasives, Inc. | Abrasive article |
US20150375367A1 (en) * | 2014-06-29 | 2015-12-31 | Saint-Gobain Abrasives, Inc. | Abrasive article including a core and a bonded abrasive body |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3545308A1 (en) * | 1985-12-20 | 1987-06-25 | Feldmuehle Ag | GRINDING DISC WITH DAMPING |
DE9420676U1 (en) * | 1994-12-24 | 1995-02-23 | Schleifmittel Werk Karl Seiffe | Recyclable grinding wheel zones |
DE10359747A1 (en) * | 2003-12-19 | 2005-07-14 | August Rüggeberg Gmbh & Co. Kg | Rough-grinding wheel |
CN103878706A (en) * | 2008-12-30 | 2014-06-25 | 圣戈班磨料磨具有限公司 | Reinforced Bonded Abrasive Tools |
-
2016
- 2016-03-07 HR HRP20220507TT patent/HRP20220507T1/en unknown
- 2016-03-07 DK DK16158947.8T patent/DK3081337T3/en active
- 2016-03-07 HU HUE16158947A patent/HUE058349T2/en unknown
- 2016-03-07 EP EP16158947.8A patent/EP3081337B1/en active Active
- 2016-03-07 RS RS20220341A patent/RS63129B1/en unknown
- 2016-03-07 PL PL16158947T patent/PL3081337T3/en unknown
- 2016-03-07 ES ES16158947T patent/ES2910650T3/en active Active
- 2016-03-07 SI SI201631507T patent/SI3081337T1/en unknown
- 2016-03-07 PT PT161589478T patent/PT3081337T/en unknown
- 2016-03-22 US US15/077,064 patent/US20160288295A1/en not_active Abandoned
- 2016-03-24 CA CA2924939A patent/CA2924939C/en active Active
-
2019
- 2019-04-18 US US16/388,088 patent/US11235437B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130305614A1 (en) * | 2012-03-30 | 2013-11-21 | Anthony C. Gaeta | Abrasive products having fibrillated fibers |
US20150000206A1 (en) * | 2013-06-28 | 2015-01-01 | Saint-Gobain Abrasives, Inc. | Abrasive article |
US20150375367A1 (en) * | 2014-06-29 | 2015-12-31 | Saint-Gobain Abrasives, Inc. | Abrasive article including a core and a bonded abrasive body |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11407086B2 (en) | 2017-06-26 | 2022-08-09 | Dronco Gmbh | Method of manufacturing an abrasive member, in particular rotary abrasive disc, and abrasive member, in particular rotary abrasive disc |
Also Published As
Publication number | Publication date |
---|---|
SI3081337T1 (en) | 2022-06-30 |
PL3081337T3 (en) | 2022-06-06 |
EP3081337B1 (en) | 2022-02-16 |
EP3081337A1 (en) | 2016-10-19 |
PT3081337T (en) | 2022-04-11 |
CA2924939A1 (en) | 2016-10-02 |
US20190240809A1 (en) | 2019-08-08 |
RS63129B1 (en) | 2022-05-31 |
HUE058349T2 (en) | 2022-07-28 |
DK3081337T3 (en) | 2022-04-25 |
HRP20220507T1 (en) | 2022-06-10 |
ES2910650T3 (en) | 2022-05-13 |
US11235437B2 (en) | 2022-02-01 |
CA2924939C (en) | 2017-12-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US11235437B2 (en) | Rough grinding wheel comprising a core | |
CN103962654B (en) | There is the cutter with tooth workpiece for contradicting profile for being ground | |
TWI491471B (en) | Abrasive article comprising abrasive particles of a composite composition | |
US7115029B2 (en) | Abrasive cutting disk with lateral steel sheets | |
US10259056B2 (en) | Milling tool for an angle grinders | |
CN108568757A (en) | For being ground or the stake body of cutting tool | |
JP2024024111A (en) | Three layer grinding wheel | |
US20150266155A1 (en) | Method for producing polished-article | |
US9539702B2 (en) | Abrasive grinding wheel | |
JPH0716879B2 (en) | Grinding tool | |
RU2766921C2 (en) | Roughing grinding disc with carrying layer | |
CN205660545U (en) | Base plate device of diamond grinding wheel | |
AU2016421095B2 (en) | Roughing grinding tool | |
US2048905A (en) | Abrasive article | |
US1663310A (en) | Segmental grinding wheel | |
PH12021551698A1 (en) | Grinding disc and use of such grinding disc | |
CA3097300C (en) | Supporting body for a grinding tool and method of producing a grinding body | |
CN106392915A (en) | Emery grinding wheel wide in application range | |
CN108603255A (en) | Superhard construction and its manufacturing method | |
FI82907C (en) | Fixed stud, corresponding to hollow stud, designed for a vehicle tire | |
JP2000343420A (en) | Extra-abrasive grain lapping surface table | |
ITFI20080153A1 (en) | ANTI-SLIP HORSES NEEDLE |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: KLINGSPOR AG, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MOOS, MARKUS;CONRADI, BERND;SIGNING DATES FROM 20160321 TO 20160322;REEL/FRAME:038104/0717 |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: ADVISORY ACTION MAILED |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: RESPONSE AFTER FINAL ACTION FORWARDED TO EXAMINER |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |