EP0378964B1 - Outil à trépaner - Google Patents
Outil à trépaner Download PDFInfo
- Publication number
- EP0378964B1 EP0378964B1 EP89810661A EP89810661A EP0378964B1 EP 0378964 B1 EP0378964 B1 EP 0378964B1 EP 89810661 A EP89810661 A EP 89810661A EP 89810661 A EP89810661 A EP 89810661A EP 0378964 B1 EP0378964 B1 EP 0378964B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- guide body
- guide
- cutting body
- segments
- cutting
- 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.)
- Expired - Lifetime
Links
- 238000005476 soldering Methods 0.000 claims description 11
- 238000003466 welding Methods 0.000 claims description 10
- 238000005245 sintering Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 abstract description 44
- 238000005553 drilling Methods 0.000 description 16
- 239000011159 matrix material Substances 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000003381 stabilizer Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D99/00—Subject matter not provided for in other groups of this subclass
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/48—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type
-
- 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
- Y10T408/78—Tool of specific diverse material
-
- 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
-
- 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
- Y10T408/89—Tool or Tool with support
- Y10T408/895—Having axial, core-receiving central portion
-
- 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
- Y10T408/89—Tool or Tool with support
- Y10T408/896—Having product-receiving chamber
Definitions
- the invention relates to a hollow drilling tool with a tubular carrier part, with a cutting body arranged at the front end thereof, and with a guide body that has a higher wear resistance than the carrier part, which corresponds at least along part of the circumference of the outer contour of the cutting body and in its axial extent is equal to or larger than that Cutting body is.
- Hollow boring tools are mainly used for drilling larger diameter bores.
- a hollow drilling tool is known for example from GB-PS 935 030.
- the ring-shaped cutting body is connected to the carrier part.
- the radial guidance of this hollow drilling tool takes place exclusively via the cutting body.
- the guide length becomes shorter. If the guide length is too small, an exact borehole geometry can no longer be guaranteed.
- a hollow drilling tool which has a kind of stabilizer after the cutting body, the stabilizer being clamped directly between the matrix of the cutting body and sleeves.
- the stabilizer is supported directly on the matrix of the cutting body by means of threaded rings in the form of two nuts.
- the offset design creates a very complex and complicated tool that also requires a coupling between the cutting body and the guide part that is not easy to manufacture. There is also a risk that the resulting pressure forces will loosen, deform or destroy the matrix.
- the invention has for its object to provide a hollow drilling tool that allows both a full utilization of the cutting body and adherence to a precise drill hole geometry, and is simple, economical and rational to manufacture.
- this is achieved in that the front end of the guide body is connected to the rear end of the cutting body and the rear end of the guide body is connected to the front end of the carrier part and the carrier part is connected to the guide body by welding or soldering and the guide elements to the cutting body is connected by sintering, soldering or welding
- the two functions "cutting” and “guiding” are separated from one another by the arrangement of a guide body. Since the outer contour of the guide body at least along one Part of the circumference corresponds to the outer contour of the cutting body, the guide body is guided in the bore previously made by the cutting bodies. Since the guide body has a higher wear resistance than the carrier part, premature wear of the guide body is prevented.
- the fact that the carrier part is connected to the guide body by soldering or welding and the guide body is connected to the cutting body by sintering, soldering or welding not only ensures simple and safe power support, but also economical and rational production.
- Guide elements arranged on the guide body are expediently designed as segments. Segments each extend over part of the circumference. If the circumferential extent of the segments is sufficiently small and the outside diameter of the hollow drilling tool is sufficiently large, the segments can also be designed as flat strips that extend in the axial direction.
- At least three guide elements which are distributed along the circumference and are designed as segments, are preferably provided.
- the central position of the hollow drilling tool in a hole is determined using three segments. However, more than three, for example four or six, segments can also be provided for a favorable distribution of the lateral forces.
- the guide elements which are designed as segments, are expediently arranged next to the cutting body in an extension against the feed direction.
- the cutting body is thus supported in the axial direction on the segments and these in turn on the carrier part.
- the segments and the cutting body can each be produced individually and then connected to one another, for example by soldering. Because the cutting body preferably consists of synthetic diamonds embedded in a metal matrix, the cutting body and the segments can also be pre-sintered individually and then sintered together to form a single body.
- the segments are expediently part of a guide body arranged between the carrier part and the cutting body.
- the guide body can thus be manufactured separately and then connected at one end to the carrier part and at the other end to the cutting body. This enables an additional rational and economical effect in the production.
- the guide body can, for example, be provided with grooves running in the axial direction, so that strips serving to guide the hollow drilling tool are produced between the individual grooves. Such grooves also serve for the good removal of the cooling water and the cuttings washed away with it.
- the guide body can also be pre-sintered and then connected to the cutting body.
- the guide body advantageously contains wear-resistant hard materials.
- hard materials are, for example, silicon carbide or the like. These hard materials can be sintered into a matrix material.
- the hollow drilling tool shown in FIGS. 1 and 2 consists of a tubular carrier part 1, a ring-shaped cutting body 2 and a likewise ring-shaped guide body 3.
- the carrier part 1 has a front end 1a and a rear end 1b. At the rear end 1b, the carrier part 1 is provided with a connecting piece 1c.
- the cutting body 2 also has a front end 2a and a rear end 2b.
- the cutting body 2 is also provided with two diametrically opposed slots 2c extending from the front end 2a. These slots 2c serve for the passage of the cooling water supplied through the carrier part 1 from the inside to the outside of the hollow drilling tool.
- the guide body 3 has a front end 3a and a rear end 3b.
- the front end 3a of the guide body 3 is connected to the rear end 2b of the cutting body 2.
- the guide body 3 is provided along its circumference with grooves 3c running in the axial direction. These grooves 3c serve to discharge the cooling water and the cuttings washed away with it. The webs remaining between the grooves 3c are used for guidance and are designed as guide elements 3d.
- the rear end 2b of the guide body 3 is connected to the front end 1a of the carrier part 1. This connection of the carrier part 1 to the guide body 3 can take place, for example, by welding or soldering.
- the connection between the cutting body 2 and the guide body 3 can also be made by welding or soldering. It is also possible to sinter the cutting body 2 and the guide body together.
- the axial extent 1 of the guide body 3 is a multiple of the axial extent s of the cutting body 2.
- the hollow drilling tool shown in FIG. 3 consists of a carrier part 11 and a cutting body 12 arranged at its front end 11a and a guide body 13.
- the guide body 13 is located between the carrier part 11 and the cutting bodies 12 and corresponds in cross section to the cutting body 12.
- the cutting body 12 and the guide body 13 can be connected to one another by sintering, soldering or welding.
- the guide body 13 is connected to the carrier part 11 by welding or soldering.
- the carrier part 11 and the guide body 13 are connected to one another only at the end. Due to the gaps between the guide body 13, the cooling water can circulate from the inside to the outside of the tubular support part 11.
- the axial extent t of the guide body 13 corresponds approximately to the axial extent s of the cutting body 12. This ensures that the guidance is sufficient until the cutting bodies 12 are completely worn out.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Drilling Tools (AREA)
- Earth Drilling (AREA)
- Surgical Instruments (AREA)
- Dowels (AREA)
- Nonmetallic Welding Materials (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Claims (5)
- Outil de forage creux, comprenant un élément de support tubulaire (1, 11), un corps de coupe (2, 12) monté sur l'extrémité antérieure (1a, 11a) de celui-ci et un corps de guidage (3, 13) qui présente une résistance à l'usure accrue par rapport à l'élément de support (1, 11) et correspond, au moins le long d'une partie de la circonférence, au contour extérieur du corps de coupe (2, 12) et dont l'extension axiale (1, t) est égale ou supérieure à celle du corps de coupe (2, 12), caractérisé en ce que l'extrémité antérieure (3a) du corps de guidage (3, 13) est rattachée à l'extrémité postérieure (2b) du corps de coupe (2, 12), que l'extrémité postérieure (3b) du corps de guidage (3, 13) est rattachée à l'extrémité antérieure (1a) de l'élément de support (1, 12), et que l'élément de support (1, 12) est solidarisé avec le corps de guidage (3, 13) par soudure ou brasure, alors que le corps de guidage (3, 13) et le corps de coupe (2, 12) sont réunis par frittage, brasure ou soudure.
- Outil de forage creux selon la revendication 1, caractérisé en ce que des éléments de guidage (3d, 13) prévus sur le corps de guidage (3, 13) sont conformés en segments.
- Outil de forage creux selon la revendication 2, caractérisé en ce qu'il comprend au moins trois éléments de guidage (3d, 13) conformés en segments et répartis sur la circonférence.
- Outil de forage creux selon l'une des revendications 2 ou 3, caractérisé en ce que les éléments de guidage (3d, 13) conformés en segments sont disposés, dans le sens opposé à l'avancement, dans le prolongement du corps de coupe (2, 12).
- Outil de forage creux selon l'une des revendications 2 à 4, caractérisé en ce que les segments font partie d'un corps de guidage (3) disposé entre l'élément de support (1) et le corps de coupe (2).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT89810661T ATE91933T1 (de) | 1989-01-20 | 1989-09-05 | Hohlbohrwerkzeug. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3901528A DE3901528A1 (de) | 1989-01-20 | 1989-01-20 | Hohlbohrwerkzeug |
DE3901528 | 1989-01-20 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0378964A2 EP0378964A2 (fr) | 1990-07-25 |
EP0378964A3 EP0378964A3 (en) | 1990-09-26 |
EP0378964B1 true EP0378964B1 (fr) | 1993-07-28 |
Family
ID=6372415
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89810661A Expired - Lifetime EP0378964B1 (fr) | 1989-01-20 | 1989-09-05 | Outil à trépaner |
Country Status (6)
Country | Link |
---|---|
US (1) | US5069584A (fr) |
EP (1) | EP0378964B1 (fr) |
JP (1) | JPH02224978A (fr) |
AT (1) | ATE91933T1 (fr) |
CA (1) | CA2008169C (fr) |
DE (2) | DE3901528A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007005463B3 (de) * | 2007-01-30 | 2008-05-29 | Ting Fong Electric & Machinery Co. Ltd., Sanchung | Verfahren zur Herstellung von Bohrfräsern sowie Bohrfräser |
US9687916B2 (en) | 2011-12-22 | 2017-06-27 | Hilti Aktiengesellschaft | Drill bit with an exchangeable cutting portion |
Families Citing this family (57)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE92815T1 (de) * | 1989-06-14 | 1993-08-15 | Swarovski Tyrolit Schleif | Hohlbohrer. |
US5316416A (en) * | 1992-09-29 | 1994-05-31 | Ehwa Diamond Ind. Co., Ltd. | Diamond cutting tool for hard articles |
US5887655A (en) * | 1993-09-10 | 1999-03-30 | Weatherford/Lamb, Inc | Wellbore milling and drilling |
US5887668A (en) * | 1993-09-10 | 1999-03-30 | Weatherford/Lamb, Inc. | Wellbore milling-- drilling |
US5996571A (en) * | 1996-02-01 | 1999-12-07 | Diamond Products Joint Venture | Diamond core drill bit |
US5741097A (en) * | 1996-06-20 | 1998-04-21 | Murphy, Ii; John W. | Heat exchanger fin remover |
US5803194A (en) * | 1996-11-19 | 1998-09-08 | Kennametal Inc. | Wear protector for a drilling tool |
US5823276A (en) * | 1996-12-24 | 1998-10-20 | Beck, Iii; August H. | Diamond-tipped core barrel and method of using same |
JP3290103B2 (ja) * | 1997-06-11 | 2002-06-10 | 株式会社アライドマテリアル | コアビット |
US5865571A (en) * | 1997-06-17 | 1999-02-02 | Norton Company | Non-metallic body cutting tools |
US6203416B1 (en) * | 1998-09-10 | 2001-03-20 | Atock Co., Ltd. | Outer-diameter blade, inner-diameter blade, core drill and processing machines using same ones |
DE19926247B4 (de) * | 1999-06-09 | 2005-08-04 | Krauss-Maffei Wegmann Gmbh & Co. Kg | Diamantkronenbohrer |
US6196908B1 (en) * | 1999-07-16 | 2001-03-06 | Storage Technology Corporation | Drill for composite materials |
US20020137433A1 (en) * | 2001-03-26 | 2002-09-26 | Lee Lawrence K. | Abrasive drill bit |
AT5265U1 (de) * | 2001-07-27 | 2002-05-27 | Schraml Glastechnik Gmbh | Diamant-hohlbohrer |
EP1304199A1 (fr) * | 2001-10-18 | 2003-04-23 | Marcrist International Limited | Trépan avec protection contre l'usure |
US8191545B2 (en) * | 2002-02-22 | 2012-06-05 | Kim & Ed Pte Ltd | Electroformed thin-wall core drills impregnated with abrasives |
US6935325B1 (en) * | 2002-11-01 | 2005-08-30 | Lawrence L. Getty | Method and apparatus for cutting and polishing stone articles |
US7028790B2 (en) * | 2003-09-19 | 2006-04-18 | Jack Moore Associates, Inc. | Rotary drill bit |
US20080253830A1 (en) * | 2004-03-31 | 2008-10-16 | Akio Katsuki | Method of Installing Anchor Bolt, Method of Drilling Anchor Bolt Hole, and Drilling Device |
US7927189B2 (en) * | 2004-08-16 | 2011-04-19 | United Technologies Corporation | Superabrasive tool |
RU2388895C2 (ru) * | 2005-01-18 | 2010-05-10 | Груп Фордиа Инк. | Головка для бурения отверстия |
GB2427843B (en) * | 2005-10-24 | 2008-05-07 | C4 Carbides Ltd | Drill bit |
US7204244B1 (en) | 2006-03-02 | 2007-04-17 | Luminare Supply Corporation | Diamond core drill bit |
US8221423B2 (en) * | 2006-03-28 | 2012-07-17 | Warsaw Orthopedic, Inc. | Osteochondral plug graft harvesting instrument and kit |
US20080100125A1 (en) * | 2006-11-01 | 2008-05-01 | Les Staples | Abrasive cutter |
US9267332B2 (en) | 2006-11-30 | 2016-02-23 | Longyear Tm, Inc. | Impregnated drilling tools including elongated structures |
US9540883B2 (en) | 2006-11-30 | 2017-01-10 | Longyear Tm, Inc. | Fiber-containing diamond-impregnated cutting tools and methods of forming and using same |
ES2635721T3 (es) * | 2006-11-30 | 2017-10-04 | Longyear Tm, Inc. | Herramientas de corte impregnadas de diamante que contienen fibras |
US8459381B2 (en) * | 2006-12-14 | 2013-06-11 | Longyear Tm, Inc. | Drill bits with axially-tapered waterways |
US7628228B2 (en) * | 2006-12-14 | 2009-12-08 | Longyear Tm, Inc. | Core drill bit with extended crown height |
US9279292B2 (en) | 2013-11-20 | 2016-03-08 | Longyear Tm, Inc. | Drill bits having flushing and systems for using same |
US9500036B2 (en) | 2006-12-14 | 2016-11-22 | Longyear Tm, Inc. | Single-waterway drill bits and systems for using same |
AU2011201711B1 (en) * | 2006-12-14 | 2011-07-28 | Boart Longyear Company | Core drill bit with extended matrix height |
US9506298B2 (en) | 2013-11-20 | 2016-11-29 | Longyear Tm, Inc. | Drill bits having blind-hole flushing and systems for using same |
US20080181735A1 (en) * | 2007-01-25 | 2008-07-31 | Ting Fong Electric & Machinery Co., Ltd. | Method for manufacturing drill cutters and structure thereof |
CN101234468B (zh) * | 2007-01-30 | 2010-05-19 | 鼎峰电机工业股份有限公司 | 钻孔刀具的制造方法及其结构 |
US8485283B2 (en) * | 2007-09-05 | 2013-07-16 | Groupe Fordia Inc. | Drill bit |
US8590646B2 (en) * | 2009-09-22 | 2013-11-26 | Longyear Tm, Inc. | Impregnated cutting elements with large abrasive cutting media and methods of making and using the same |
US8657894B2 (en) | 2011-04-15 | 2014-02-25 | Longyear Tm, Inc. | Use of resonant mixing to produce impregnated bits |
US20130022421A1 (en) * | 2011-07-21 | 2013-01-24 | Robert Bosch Gmbh | Abrasive coring bit |
WO2014015154A1 (fr) | 2012-07-18 | 2014-01-23 | Milwaukee Electric Tool Corporation | Scie cylindrique |
CA2825729C (fr) | 2012-11-21 | 2018-05-22 | Diamond Products, Limited | Meche en diamant et ses procedes de fabrication |
EP2745965A1 (fr) * | 2012-12-21 | 2014-06-25 | HILTI Aktiengesellschaft | Trépan doté d'une section de coupe interchangeable |
EP2745966A1 (fr) | 2012-12-21 | 2014-06-25 | HILTI Aktiengesellschaft | Trépan doté d'une section de coupe interchangeable |
CA2854691C (fr) | 2013-07-03 | 2017-10-31 | Karl H. Moller | Procede de fabrication d'une couronne de forage pourvue d'un aleseur pour l'extraction de diamants |
DE102014007958A1 (de) * | 2014-06-04 | 2015-12-17 | Vittorio Pittana | Vorrichtung und Verfahren zur Senkung der notwenigen Antriebsleistung bei Kernbohrarbeiten |
EP3037229A1 (fr) * | 2014-12-22 | 2016-06-29 | HILTI Aktiengesellschaft | Bague de forage pour une couronne de carottage |
US10702975B2 (en) | 2015-01-12 | 2020-07-07 | Longyear Tm, Inc. | Drilling tools having matrices with carbide-forming alloys, and methods of making and using same |
US11926005B2 (en) * | 2017-08-03 | 2024-03-12 | Vestas Wind Systems A/S | Mill bit for the manufacture of a wind turbine blade and method of forming same |
EP3501713A1 (fr) * | 2017-12-21 | 2019-06-26 | HILTI Aktiengesellschaft | Section de coupe pour une couronne de forage |
CN216028284U (zh) | 2018-07-10 | 2022-03-15 | 米沃奇电动工具公司 | 孔锯 |
US20200040663A1 (en) * | 2018-08-02 | 2020-02-06 | Qual Diamond Hi-Tech Corporation | Electroformed thin-wall diamond drill bit with continuous wavy-shape blade |
CN110424901B (zh) * | 2019-08-17 | 2021-05-18 | 温州瓯厦建设有限公司 | 一种开孔器 |
US20210101248A1 (en) * | 2019-10-07 | 2021-04-08 | Paul Luccia | Method and apparatus for forming holes |
USD958855S1 (en) | 2019-12-09 | 2022-07-26 | Milwaukee Electric Tool Corporation | Hole saw |
USD959521S1 (en) * | 2020-11-16 | 2022-08-02 | Adam Abrams | Tool |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE694502C (de) * | 1938-10-05 | 1940-08-02 | Walter Hebart | Aus einem Bohrrohr und aufgesetztem Bohrkopf bestehendes Bohrwerkzeug, insbesondere zur Herstellung langer Bohrungen |
US2996061A (en) * | 1959-01-26 | 1961-08-15 | Super Cut | Abrasive diamond core drill |
US3120286A (en) * | 1962-01-04 | 1964-02-04 | Jersey Prod Res Co | Stabilized drag bit |
SE337974B (fr) * | 1970-09-29 | 1971-08-23 | Sandvikens Jernverks Ab | |
CA948181A (en) * | 1971-02-12 | 1974-05-28 | Lionel Lavallee | Diamond drills |
SU437621A1 (ru) * | 1972-06-21 | 1974-07-30 | Предприятие П/Я В-2438 | Алмазное кольцевое сверло |
SU745701A1 (ru) * | 1977-10-07 | 1980-07-07 | Предприятие П/Я В-2438 | Алмазное кольцевое сверло |
CA1053938A (fr) * | 1977-11-18 | 1979-05-08 | Robert E. Generoux | Trepan de carottage |
SU791890A1 (ru) * | 1978-01-30 | 1980-12-30 | Ордена Трудового Красного Знамени Институт Сверхтвердых Материалов Ан Украинской Сср | Долото колонковое |
US4208154A (en) * | 1978-03-21 | 1980-06-17 | Gundy William P | Core drill |
SU856821A1 (ru) * | 1979-04-06 | 1981-08-25 | Всесоюзный Научно-Исследовательский Институт Нерудных Строительных Материалов И Гидромеханизации (Вниинеруд) | Алмазный инструмент дл кольцевого сверлени |
GB2052325A (en) * | 1979-07-03 | 1981-01-28 | Stark T | Multi-cutter drilling bit tool |
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1989
- 1989-01-20 DE DE3901528A patent/DE3901528A1/de not_active Withdrawn
- 1989-09-05 DE DE8989810661T patent/DE58905054D1/de not_active Expired - Fee Related
- 1989-09-05 AT AT89810661T patent/ATE91933T1/de not_active IP Right Cessation
- 1989-09-05 EP EP89810661A patent/EP0378964B1/fr not_active Expired - Lifetime
- 1989-12-27 JP JP1336835A patent/JPH02224978A/ja active Pending
-
1990
- 1990-01-19 CA CA002008169A patent/CA2008169C/fr not_active Expired - Fee Related
- 1990-01-22 US US07/468,375 patent/US5069584A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007005463B3 (de) * | 2007-01-30 | 2008-05-29 | Ting Fong Electric & Machinery Co. Ltd., Sanchung | Verfahren zur Herstellung von Bohrfräsern sowie Bohrfräser |
US9687916B2 (en) | 2011-12-22 | 2017-06-27 | Hilti Aktiengesellschaft | Drill bit with an exchangeable cutting portion |
Also Published As
Publication number | Publication date |
---|---|
EP0378964A3 (en) | 1990-09-26 |
JPH02224978A (ja) | 1990-09-06 |
DE3901528A1 (de) | 1990-07-26 |
US5069584A (en) | 1991-12-03 |
DE58905054D1 (de) | 1993-09-02 |
ATE91933T1 (de) | 1993-08-15 |
CA2008169A1 (fr) | 1990-07-20 |
EP0378964A2 (fr) | 1990-07-25 |
CA2008169C (fr) | 2000-01-04 |
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