WO2003011545A1 - Diamant-hohlbohrer - Google Patents
Diamant-hohlbohrer Download PDFInfo
- Publication number
- WO2003011545A1 WO2003011545A1 PCT/AT2002/000223 AT0200223W WO03011545A1 WO 2003011545 A1 WO2003011545 A1 WO 2003011545A1 AT 0200223 W AT0200223 W AT 0200223W WO 03011545 A1 WO03011545 A1 WO 03011545A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- drill
- segments
- boring
- diamond
- recesses
- 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.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
- B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
- B28D1/041—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs with cylinder saws, e.g. trepanning; saw cylinders, e.g. having their cutting rim equipped with abrasive particles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/81—Tool having crystalline cutting edge
Definitions
- the invention relates to a diamond hollow drill, the hollow drill head has a diamond coating.
- Known diamond hollow drills which are used for drilling flat and hollow glass, but also for drilling stone and ceramic material, have the basic shape of a pipe with the diamond coating attached to the end of the drill head. It is common to drill glass from opposite sides, as drilling on one side can cause shell breakouts on the exit side of the drill. During drilling, the drilling area is rinsed under pressure with water supplied through the drill opening. It is often necessary to chamfer the boreholes on one or both sides, i.e. chamfer the edge between the cylindrical borehole and the material surface on one or both sides.
- a hollow drill which is fundamentally unsuitable for glass and which is intended for drilling through GRP laminates and which is provided on the end face with a cutting crown made of diamond chips, has, according to DE 34 46 296 A, swirl-shaped slots in its jacket which extend from the crown and go into an inner cone having collar over which inner cone an adjusting cone can be inserted, with the help of which the width of the slots mentioned is reduced by more or less tightening and thus the effective diameter of the drill bit can be changed or adjusted.
- such a drill is out of the question for glass processing, although the attachment of a countersunk ring does not appear to be possible or sensible.
- the slots could cause vibrations in the cutting crown and thus an inaccurate drilling process or, in extreme cases, a glass break.
- a compensation device for axial alignment with the drilling spindle is required in this construction because of the possible axial deviations of the clamped drill.
- DE 26 01 519 A discloses a countersink / boring tool intended only for twist drills, in which at least one of the clamping jaws of the drill chuck is extended and engages as a countersink tool behind the cutting edge in a spiral groove in the drill, a hard metal running position is provided.
- the countersinking tool only comes into effect when the clamping tool moves towards the drill material, so that in practice its use, which is only intended for metalworking, only makes sense if a through hole is made. Glass processing with twist drills is hardly or not possible in practice. It is also not possible, as mentioned at the beginning, to drill from opposite sides and to make the countersinks to a precisely defined extent. Here too there is an increased risk of vibration for the countersinking tool.
- the object of the invention is therefore to provide a diamond hollow drill of the type mentioned, which ensures the same or better drilling performance than the known drill when used alone and moreover, when used as a combination tool with a countersink ring, a burr formation at the transition area between the cylindrical borehole and chamfer and prevented over the entire service life.
- the task is solved in principle in that the drill head in the area of the diamond plating to a drill bit with external, for. B. groove-shaped recesses, and at least between these recesses, the adjacent drill head part is formed outwardly in diameter-projecting segments, a countersunk ring which can be attached to the drill head, if necessary, has a plug-in opening with recesses for the segments of the drill bit which is essentially adapted to the shape of the outer contour of the drill bit ,
- a good drainage of the rinsing water and the removed material is achieved via the groove-shaped recesses, and the side flanks of the grooves or their end edges make a favorable contribution to material removal.
- An existing or forming gap between the drill head and the countersink is always within the diameter (and not as in the known combinations ons tools for glass and stone processing outside) of the drill hole produced by the drill bit, more precisely from the outer edge of the segments, so that burr formation is practically impossible.
- the countersunk ring remains in the deferred position after being pushed onto the drill bit, when it is pushed behind the drill bit, or is rotated relative to the drill bit, which can sometimes be useful to improve the flushing water flow.
- the flushing water itself can be supplied centrally or through holes in the flanks of the drill.
- the countersunk ring remains symmetrical and therefore balanced around the axis of rotation.
- an adapter for the hollow drill which enables length adjustment to compensate for drill wear.
- Such an adapter, quick couplings for him and devices for rapid length adjustment with the aid of the adapter are the subject of PCT / AT 02/00068 of March 5, 2002 by the same applicant.
- Fig. 1 a diamond hollow drill according to the invention with countersink in
- Fig. 2 shows the drill of FIG. 1 in bottom view
- the diamond hollow drill 1 has in a known manner as a supporting body a centering cone 2 with subsequent drill shaft 3 and a drill bit 4, the outer diameter of which determines the bore hole diameter, but the outer groove-shaped recesses and between them the subsequent drill head shaft 3 to the outside has outstanding segments 5.
- the segments 5 and the groove-shaped recesses were shown in the same division. Both the pitch and the size ratio of segments 5 and grooves can be changed and adapted depending on the need or drill diameter.
- a countersunk ring 6 is pushed over the drill bit 4, which is formed from an annular holding part 7 with an insertion hole 8 for a locking screw and the actual countersunk part 9, the end face 10 of which has the conical inclination of the desired bevel at the edge of the borehole, but has segmentations.
- these segmentations result from the fact that the push-on opening of the part 9 is adapted to the outer contour of the drill bit 4, that is to say it has grooves or grooves 11 which engage over the segments 5. Segment projections remain between these grooves 11, which projections were shown appropriately in the grooves of the drill bit, but may also have a side play in these grooves.
- the countersink 9 thus has between the grooves 11 areas whose inner diameter is smaller than the outer diameter of the segments 5, so that these areas can no longer come into engagement with the wall of the cylindrical borehole produced by the drill bit during the countersinking process and also a possible gap between The countersink opening and the outside of the drill run at a distance within the outside diameter of the borehole.
- any burr formation at the transition between the cylindrical borehole part and countersink is excluded, as will be explained in connection with FIGS. 3 and 4.
- 3 and 4 each show a glass plate 12 in which a borehole 13 with countersink 14a and 14 is made. If a conventional tubular diamond hollow drill 1a according to FIG.
- a countersink ring 6a optionally segmented in its working surface, adjoins the body of the drill 1a with its removal region 10a, forming a hair gap 15, and it also becomes the one from the beginning of the sinking process the cutting edge-shaped end pieces of the material, which are conical in shape in the basic shape, are quickly removed.
- a hair gap 15 already along the hair gap 15, part of the borehole wall remains and is broken out in the form of fine fragments with increasing penetration of the countersink ring.
- the diameter of the borehole 13 is produced from the outside of the segments 5 of the drill bit 4, and at least the segments 9 of the countersunk ring 6 lie with their inside within the borehole 13 produced, see above that these segments do not produce the countersink 14 with their inner cutting end, but with a flank, and that no burr 16 can arise as in FIG. 3.
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Drilling Tools (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002455613A CA2455613A1 (en) | 2001-07-27 | 2002-07-26 | Diamond hollow drill |
| US10/485,053 US20040197156A1 (en) | 2001-07-27 | 2002-07-26 | Diamond hollow drill |
| EP02759858A EP1412148A1 (de) | 2001-07-27 | 2002-07-26 | Diamant-hohlbohrer |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0059401U AT5265U1 (de) | 2001-07-27 | 2001-07-27 | Diamant-hohlbohrer |
| ATGM594/2001 | 2001-07-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2003011545A1 true WO2003011545A1 (de) | 2003-02-13 |
Family
ID=3494701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/AT2002/000223 Ceased WO2003011545A1 (de) | 2001-07-27 | 2002-07-26 | Diamant-hohlbohrer |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20040197156A1 (de) |
| EP (1) | EP1412148A1 (de) |
| AT (1) | AT5265U1 (de) |
| CA (1) | CA2455613A1 (de) |
| WO (1) | WO2003011545A1 (de) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE55982C (de) * | O. TERP in Breslau, Villa Marschall Kleinburg | Bohrkrone für Schmirgeltiefbohrverfahren zur Gewinnung von Gesteinskernen | ||
| DE829569C (de) * | 1950-10-31 | 1952-01-28 | Ernst Winter & Sohn Diamantenw | Huelsenfoermiges Bohr- und Schleifwerkzeug |
| WO1990015683A1 (de) * | 1989-06-14 | 1990-12-27 | Tyrolit Schleifmittelwerke Swarovski K.G. | Hohlbohrer |
| JPH05245829A (ja) * | 1992-03-04 | 1993-09-24 | Asahi Glass Co Ltd | 板状部材の皿孔穿孔装置 |
| EP0729801A1 (de) * | 1995-03-02 | 1996-09-04 | Ralf Biedron | Bohrsatz mit Hohlbohrer für Bohrungen in Mauerwerken oder Beton |
| JPH11179720A (ja) * | 1997-12-18 | 1999-07-06 | Goei Seisakusho:Kk | 落下防止コアリフタを備えるコアビット |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1940220A (en) * | 1931-02-06 | 1933-12-19 | Finkl & Sons Co | Boring tool |
| US2978846A (en) * | 1956-10-08 | 1961-04-11 | Lee H Barron | Drill and countersink tool |
| US2996061A (en) * | 1959-01-26 | 1961-08-15 | Super Cut | Abrasive diamond core drill |
| US3494348A (en) * | 1967-02-20 | 1970-02-10 | Trw Inc | Core drill |
| JPS62241841A (ja) * | 1986-04-15 | 1987-10-22 | Kiyokuei Kenma Kako Kk | 糸面つき穴加工法ならびに加工用工具 |
| DE3901528A1 (de) * | 1989-01-20 | 1990-07-26 | Hilti Ag | Hohlbohrwerkzeug |
| US5487627A (en) * | 1994-07-26 | 1996-01-30 | Mitsubishi Materials Corporation | Counter sink drill |
| DE10032036A1 (de) * | 2000-07-05 | 2002-01-17 | Wendt Gmbh | Senkerwerkzeug |
-
2001
- 2001-07-27 AT AT0059401U patent/AT5265U1/de unknown
-
2002
- 2002-07-26 US US10/485,053 patent/US20040197156A1/en not_active Abandoned
- 2002-07-26 WO PCT/AT2002/000223 patent/WO2003011545A1/de not_active Ceased
- 2002-07-26 CA CA002455613A patent/CA2455613A1/en not_active Abandoned
- 2002-07-26 EP EP02759858A patent/EP1412148A1/de not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE55982C (de) * | O. TERP in Breslau, Villa Marschall Kleinburg | Bohrkrone für Schmirgeltiefbohrverfahren zur Gewinnung von Gesteinskernen | ||
| DE829569C (de) * | 1950-10-31 | 1952-01-28 | Ernst Winter & Sohn Diamantenw | Huelsenfoermiges Bohr- und Schleifwerkzeug |
| WO1990015683A1 (de) * | 1989-06-14 | 1990-12-27 | Tyrolit Schleifmittelwerke Swarovski K.G. | Hohlbohrer |
| JPH05245829A (ja) * | 1992-03-04 | 1993-09-24 | Asahi Glass Co Ltd | 板状部材の皿孔穿孔装置 |
| EP0729801A1 (de) * | 1995-03-02 | 1996-09-04 | Ralf Biedron | Bohrsatz mit Hohlbohrer für Bohrungen in Mauerwerken oder Beton |
| JPH11179720A (ja) * | 1997-12-18 | 1999-07-06 | Goei Seisakusho:Kk | 落下防止コアリフタを備えるコアビット |
Non-Patent Citations (2)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 017, no. 705 (M - 1534) 22 December 1993 (1993-12-22) * |
| PATENT ABSTRACTS OF JAPAN vol. 1999, no. 12 29 October 1999 (1999-10-29) * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1412148A1 (de) | 2004-04-28 |
| AT5265U1 (de) | 2002-05-27 |
| US20040197156A1 (en) | 2004-10-07 |
| CA2455613A1 (en) | 2003-02-13 |
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