EP0598389A1 - Bearing disc for diamond tools, suitable for damping vibrations - Google Patents
Bearing disc for diamond tools, suitable for damping vibrations Download PDFInfo
- Publication number
- EP0598389A1 EP0598389A1 EP93118503A EP93118503A EP0598389A1 EP 0598389 A1 EP0598389 A1 EP 0598389A1 EP 93118503 A EP93118503 A EP 93118503A EP 93118503 A EP93118503 A EP 93118503A EP 0598389 A1 EP0598389 A1 EP 0598389A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cuts
- disc
- bearing disc
- diamond tools
- vibrations
- 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
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
- B23D61/02—Circular saw blades
- B23D61/025—Details of saw blade body
Definitions
- the present invention proposes a bearing disc for diamond tools of the kind used for the manufacture of circular saws for cutting stone materials and the like in which cuts having a particular shape and position are provided, suitable for damping and/or preventing vibrations when the tool is used.
- the disc is stiffened by tensioning it in the area comprised approximately between a third and two thirds of the diameter of the disc itself.
- the present invention proposes a bearing disc for diamond tools in which there is provided a plurality of conveniently placed cuts, being able to damp or prevent this phenomenon.
- the bearing is made up of a conveniently thick metal disc, indicated as a whole by 1, to which the diamond portions (not illustrated in the figure) are welded connected with the edge and which has an axial hole, indicated by 2, for applying the disc to the shaft of a machine which may be a saw for cutting stones or another apparatus known in the art.
- the invention is characterized in that on the disc there is a set of cuts suitable for damping both tangential and radial vibrations.
- Both cuts 3 and cuts 4 in their end portion run curvilinearly, in particular they run on a line like a small semi-circumference.
- Cuts 3 are staggered with respect to cuts 4, in the sense that a straight line passing through cuts 3 halves the area comprised between two external cuts 4.
- Cuts 5 and 6 have the shape of a "Z" with the edges turned backwards and they are symmetric, in the sense that each cut 5 is the specular image of the corresponding cut 6, each pair of cuts 5 and 6 being placed between two consecutive external cuts 4.
- the invention is characterized in that it provides for radial cuts near the outward diameter and the disc hub, one being staggered with another, and "Z"-shaped cuts, which are placed near the outward diameter.
- the former have the function of damping tangential vibrations, whereas the latter damp both tangential and radial vibrations.
- a bearing disc is thus obtained for diamond tools making the use of these tools much more practical and cheaper, being able to damp or eliminate vibrations almost completely.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Holding Or Fastening Of Disk On Rotational Shaft (AREA)
- Carbon And Carbon Compounds (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
a set of radial cuts, near the disc hub;
a set of radial cuts, being staggered with respect to the former, near the outward edge;
a set of Z-shaped cuts, approximately near the outward edge.
Description
- The present invention proposes a bearing disc for diamond tools of the kind used for the manufacture of circular saws for cutting stone materials and the like in which cuts having a particular shape and position are provided, suitable for damping and/or preventing vibrations when the tool is used.
- Because of the configuration of the components, therefore, the use of the tool itself is more comfortable and practical.
- As it is known in the art when using rotating disc tools, the arising of vibrations is often a cause of trouble, said vibrations being joined with noise, overstrain of materials and being even able to break the tool or the piece.
- Besides "mechanical" vibrations caused by building inaccuracies (e.g. eccentricity or distribution of the masses being not exactly symmetric with respect to the axis of rotation), there are also "elastic" vibrations generated by the recall forces opposing the disc deformations produced by the resistance of the material being processed.
- The latter are the most troublesome and harmful vibrations, which it would be convenient to eliminate.
- At the present state of the art, in order to reduce the elastic deformations, the disc is stiffened by tensioning it in the area comprised approximately between a third and two thirds of the diameter of the disc itself.
- However, this system presents considerable limits of reliability, as in practice it depends on the experience of the person tensioning, and, moreover, it turns out to be rather expensive.
- Furthermore, by tensioning the disc, the problem of vibrations is not eliminated, since it is only possible to relieve their negative effect on the disc.
- On the contrary, it would be convenient to eliminate this phenomenon, by damping or even preventing vibrations.
- For this purpose the present invention proposes a bearing disc for diamond tools in which there is provided a plurality of conveniently placed cuts, being able to damp or prevent this phenomenon.
- This and other purposes are gained by means of the bearing disc for diamond tools according to the part characterizing claims.
- The present invention will be now described in detail, with reference to the only enclosed figure showing the front view of a bearing according to the invention.
- Basically, the bearing is made up of a conveniently thick metal disc, indicated as a whole by 1, to which the diamond portions (not illustrated in the figure) are welded connected with the edge and which has an axial hole, indicated by 2, for applying the disc to the shaft of a machine which may be a saw for cutting stones or another apparatus known in the art.
- The invention is characterized in that on the disc there is a set of cuts suitable for damping both tangential and radial vibrations.
- More particularly there is a set of cuts 3 extending radially from the axis of the disc for a certain portion of it, besides a plurality of
peripheral cuts 4, being radially orientated too, starting from the outward edge of the disc and being a few millimeters deep (10-20 mm). - Both cuts 3 and cuts 4 in their end portion run curvilinearly, in particular they run on a line like a small semi-circumference.
- Cuts 3 are staggered with respect to
cuts 4, in the sense that a straight line passing through cuts 3 halves the area comprised between twoexternal cuts 4. - On the contrary, in order to damp radial vibrations there is provided a further set of cuts, indicated by
reference numbers -
Cuts cut 5 is the specular image of thecorresponding cut 6, each pair ofcuts external cuts 4. - To sum up, the invention is characterized in that it provides for radial cuts near the outward diameter and the disc hub, one being staggered with another, and "Z"-shaped cuts, which are placed near the outward diameter. The former have the function of damping tangential vibrations, whereas the latter damp both tangential and radial vibrations.
- A bearing disc is thus obtained for diamond tools making the use of these tools much more practical and cheaper, being able to damp or eliminate vibrations almost completely.
- Obviously, it will be possible to vary the sizes, as well as the materials used, as occasion may require.
Claims (5)
- A bearing disc for diamond tools, characterized in that it provides:- a set of radial cuts, near the disc hub;- a set of radial cuts, being staggered with respect to the former, near the outward edge;- a set of "Z"-shaped cuts, approximately near the outward edge.
- A bearing disc according with Claim 1, characterized in that said "Z"-shaped cuts are placed in pairs between said external radial cuts, the "Z"-shaped cuts of each pair being specular with respect to a radius of the disc passing between them.
- A bearing disc according to any one of the preceding Claims, characterized in that said cuts have their ends turned backwards.
- Circular cutting tools characterized in that they provide for a plurality of diamond portions set up on a bearing disc according to any one of the preceding Claims.
- A bearing disc for diamond tools as described and illustrated.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT92PD000120U IT228089Y1 (en) | 1992-11-16 | 1992-11-16 | DISC SUPPORT FOR DIAMOND TOOLS, TO DAMPEN VIBRATIONS |
ITPD920120 | 1992-11-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0598389A1 true EP0598389A1 (en) | 1994-05-25 |
EP0598389B1 EP0598389B1 (en) | 1997-01-08 |
Family
ID=11389999
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93118503A Expired - Lifetime EP0598389B1 (en) | 1992-11-16 | 1993-11-16 | Bearing disc for diamond tools, suitable for damping vibrations |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0598389B1 (en) |
AT (1) | ATE147304T1 (en) |
DE (1) | DE69307280T2 (en) |
IT (1) | IT228089Y1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0640422A1 (en) * | 1993-08-24 | 1995-03-01 | FGW - Forschungsgemeinschaft Werkzeuge und Werkstoffe e.V. | Circular saw blade |
EP0819491A1 (en) * | 1996-07-16 | 1998-01-21 | Trentinutensil S.r.l. | Noiseless and stable blade disc for circular saws |
US5758561A (en) * | 1995-09-26 | 1998-06-02 | Black & Decker Inc. | Circular saw blade and method |
US5896800A (en) * | 1995-09-26 | 1999-04-27 | Black & Decker Inc. | Circular saw blade |
EP0958907A2 (en) * | 1998-05-20 | 1999-11-24 | Firma Joh. Wilh. Arntz | Disc-shaped tool with shock absorbing properties |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD382786S (en) | 1995-03-02 | 1997-08-26 | Black & Decker Inc. | Circular saw blade with heat vents |
USD383368S (en) | 1996-03-15 | 1997-09-09 | Black & Decker Inc. | Saw blade with vents |
USD388318S (en) | 1996-03-15 | 1997-12-30 | Black & Decker Inc. | Decorative vent pattern for circular saw blades |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7601953U1 (en) * | 1976-01-24 | 1976-10-28 | Fa. Richard Jansen, 5630 Remscheid | Circular or spiral saw blade |
EP0102626A2 (en) * | 1982-09-03 | 1984-03-14 | Firma Röttger Jansen-Herfeld | Tension compensating slots in circular saw blades |
WO1991002626A1 (en) * | 1989-08-25 | 1991-03-07 | Tyrolit Schleifmittelwerke Swarovski K.G. | Trimming up abrading discs |
-
1992
- 1992-11-16 IT IT92PD000120U patent/IT228089Y1/en active IP Right Grant
-
1993
- 1993-11-16 EP EP93118503A patent/EP0598389B1/en not_active Expired - Lifetime
- 1993-11-16 AT AT93118503T patent/ATE147304T1/en not_active IP Right Cessation
- 1993-11-16 DE DE69307280T patent/DE69307280T2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7601953U1 (en) * | 1976-01-24 | 1976-10-28 | Fa. Richard Jansen, 5630 Remscheid | Circular or spiral saw blade |
EP0102626A2 (en) * | 1982-09-03 | 1984-03-14 | Firma Röttger Jansen-Herfeld | Tension compensating slots in circular saw blades |
WO1991002626A1 (en) * | 1989-08-25 | 1991-03-07 | Tyrolit Schleifmittelwerke Swarovski K.G. | Trimming up abrading discs |
Non-Patent Citations (1)
Title |
---|
H. JANOCHA: "Minderung von Schwingungen und Geräuschen bei scheibenförmigen Trennwerkzeugen", WT/WERKSTATTSTECHNIK, vol. 78, no. 6, June 1988 (1988-06-01), BERLIN (DE), pages 353 - 359 * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0640422A1 (en) * | 1993-08-24 | 1995-03-01 | FGW - Forschungsgemeinschaft Werkzeuge und Werkstoffe e.V. | Circular saw blade |
US5758561A (en) * | 1995-09-26 | 1998-06-02 | Black & Decker Inc. | Circular saw blade and method |
US5896800A (en) * | 1995-09-26 | 1999-04-27 | Black & Decker Inc. | Circular saw blade |
US6065370A (en) * | 1995-09-26 | 2000-05-23 | Black & Decker Inc. | Circular saw blade and method |
EP0819491A1 (en) * | 1996-07-16 | 1998-01-21 | Trentinutensil S.r.l. | Noiseless and stable blade disc for circular saws |
EP0958907A2 (en) * | 1998-05-20 | 1999-11-24 | Firma Joh. Wilh. Arntz | Disc-shaped tool with shock absorbing properties |
EP0958907A3 (en) * | 1998-05-20 | 2001-05-02 | Firma Joh. Wilh. Arntz | Disc-shaped tool with shock absorbing properties |
Also Published As
Publication number | Publication date |
---|---|
IT228089Y1 (en) | 1998-02-05 |
ITPD920120U1 (en) | 1994-05-16 |
ITPD920120V0 (en) | 1992-11-16 |
EP0598389B1 (en) | 1997-01-08 |
DE69307280T2 (en) | 1997-06-12 |
ATE147304T1 (en) | 1997-01-15 |
DE69307280D1 (en) | 1997-02-20 |
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