EP0706870A1 - Scie tubulaire - Google Patents
Scie tubulaire Download PDFInfo
- Publication number
- EP0706870A1 EP0706870A1 EP95810465A EP95810465A EP0706870A1 EP 0706870 A1 EP0706870 A1 EP 0706870A1 EP 95810465 A EP95810465 A EP 95810465A EP 95810465 A EP95810465 A EP 95810465A EP 0706870 A1 EP0706870 A1 EP 0706870A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- carrier body
- recesses
- cross
- wall thickness
- drill bit
- 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
- 238000005553 drilling Methods 0.000 claims abstract description 11
- 230000002787 reinforcement Effects 0.000 claims description 25
- 239000000463 material Substances 0.000 description 8
- 229910003460 diamond Inorganic materials 0.000 description 3
- 239000010432 diamond Substances 0.000 description 3
- 238000005245 sintering Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Images
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
- B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S408/00—Cutting by use of rotating axially moving tool
- Y10S408/703—Trepanning
-
- 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
Definitions
- the invention relates to a hollow drill bit with a hollow cylindrical carrier body, the end region on the drilling direction side having open recesses in the drilling direction, which serve to accommodate cutting bodies which project axially beyond the carrier body and on its inner and outer contours.
- Hollow drill bits are used to produce large holes in components, such holes mostly being used to pass lines and the like.
- Masonry, concrete, stone and the like can be used as the material for the components.
- the construction of the hollow drill bits is largely known per se and generally consists of a hollow cylindrical carrier body, the end region of which on the drilling direction side has open cutouts.
- cutting bodies are arranged which serve to actually break down the material of the components to be machined.
- the cutting bodies can consist of hard metal, polycrystalline diamond flakes, diamond cutting edges consisting of diamond grains which are embedded in matrix material and the like.
- the connection between the cutting body and the carrier body can be made by soldering, welding or sintering connections.
- these known hollow drill bits Due to the difference between the wall thickness of the carrier body and the dimension of the cutting body measured in the radial direction, these known hollow drill bits are located only a relatively small connection area is available, which can be used for a soldered connection, for example. Since the hollow core bits are exposed to considerable stresses due to the torques which occur and any impact forces which may occur, the cutting bodies can come loose from the carrier body, so that the hollow core bit as a whole is unusable.
- the entire end region of the support body on the drilling direction side is provided with a larger wall thickness all round, this larger wall thickness corresponding to the radially measured dimension of the cutting body.
- the disadvantage of detaching the cutting bodies can thereby largely be remedied, but with the purchase of a further very significant disadvantage, namely the increase in the friction of the carrier body within the bore to be produced due to the circumferential end region with greater wall thickness.
- the invention has for its object to provide a hollow core bit, which on the one hand leads to high efficiency and on the other hand has a high life expectancy.
- the object is achieved in that the carrier body of the hollow drill bit has cross-sectional reinforcements limited to the area surrounding the cutouts.
- the cross-sectional reinforcements of the carrier body limited according to the invention to the surrounding area of the cutouts lead to such an enlargement of the connecting area that the cutting bodies are sufficiently held in the cutouts even under high loads.
- Common, known measures such as soldering, welding or sintering connections are sufficient for the connection.
- the partial cross-sectional reinforcements do not significantly increase the friction between the carrier body and the bore to be produced in the component, especially not in such a way that excessive heat is generated occurs. Because the cross-sectional reinforcements do not extend over the entire circumference of the carrier body, sufficient space is still available for the removal of the dismantled material. This also eliminates the risk of compression of the mined material, which can lead to a drop in performance.
- the cross-sectional reinforcements can only project beyond the wall thickness of the support body, for example, only on the outer contour; this from the point of view that the greatest friction occurs on the outer contour and material that has largely been removed must also be removed on the outer contour.
- the carrier body in such a way that the cross-sectional reinforcements protrude beyond the wall thickness only on the inner contour.
- This application is suitable, for example, for hollow core bits, which are primarily used to produce shorter holes.
- an optimal compromise can be to have both the inner contour and the outer contour of the carrier body protrude from the cross-sectional reinforcements.
- the wall thickness of the carrier body in the area of the cross-sectional reinforcements expediently corresponds to 1.2 to 1.8 times the remaining wall thickness of the carrier body.
- the cross-sectional reinforcements can be adapted to the respective application and the diameter ratio under consideration.
- the distribution in the circumferential direction of the cross-sectional reinforcements is expediently symmetrical, based on the cutouts.
- the dimension of the cross-sectional reinforcements measured in the axial direction is also advantageously matched to the respective applications.
- the cross-sectional reinforcements expediently then extend at the base of the recesses counter to the drilling direction by an amount which corresponds to 0.5 to 1.4 times the width of the recesses measured in the circumferential direction of the carrier body.
- the carrier body 1 shows a hollow core bit according to the invention with carrier body 1 and cutting bodies 2. Contrary to the drilling direction, the carrier body 1 is provided with a bottom 1a which is penetrated by a threaded bore 1b so that an adapter can be accommodated therein.
- the cutting bodies 2 are arranged in recesses 1c of the carrier body 1.
- the carrier body 1 has cross-sectional reinforcements 1d in the vicinity of these recesses 1c.
- the cross-sectional reinforcements 1d project beyond the wall thickness T of the carrier body 1 by way of example both on the inner and on the outer contour.
- the wall thickness Q in the area of the cross-sectional reinforcements 1d is thus greater than the remaining wall thickness T of the carrier body 1, the wall thickness Q in the area of the cross-sectional reinforcements 1d corresponding substantially less to approximately the same as the radially measured dimension of the cutting bodies 2.
- the cross-sectional reinforcements 1d in the circumferential direction of the carrier body 1 adjoin the recesses 1c on both sides, namely by the dimension U measured in the circumferential direction of the carrier body 1.
- This dimension U corresponds to a Proportion of the width B of the cutouts 1c measured in the circumferential direction.
- the cross-sectional reinforcements 1d extend counter to the direction of drilling beyond the base of the recesses 1c, namely by the dimension G, as again shown in FIG. 1 and in particular in FIG. 2.
- the carrier body 1 can be produced in various ways. However, non-cutting shaping is preferably used. There are also various possibilities for the connection between the carrier body 1 and the cutting body 2. However, a soldered connection is preferably used.
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Earth Drilling (AREA)
- Materials For Medical Uses (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Finger-Pressure Massage (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4436915 | 1994-10-15 | ||
DE4436915A DE4436915A1 (de) | 1994-10-15 | 1994-10-15 | Hohlbohrkrone mit einem hohlzylindrischen Trägerkörper |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0706870A1 true EP0706870A1 (fr) | 1996-04-17 |
EP0706870B1 EP0706870B1 (fr) | 2001-09-19 |
Family
ID=6530874
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95810465A Expired - Lifetime EP0706870B1 (fr) | 1994-10-15 | 1995-07-14 | Scie tubulaire |
Country Status (11)
Country | Link |
---|---|
US (1) | US5569002A (fr) |
EP (1) | EP0706870B1 (fr) |
JP (1) | JPH08197533A (fr) |
KR (1) | KR100351536B1 (fr) |
CN (1) | CN1081116C (fr) |
AT (1) | ATE205769T1 (fr) |
CA (1) | CA2160044C (fr) |
DE (2) | DE4436915A1 (fr) |
DK (1) | DK0706870T3 (fr) |
FI (1) | FI105537B (fr) |
HU (1) | HU216525B (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1637262A1 (fr) * | 2003-06-05 | 2006-03-22 | Kabushiki Kaisha Miyanaga | Carotteuse |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19826919A1 (de) * | 1998-06-17 | 1999-12-23 | Hilti Ag | Werkzeug zur Bearbeitung von harten Untergründen |
BE1013336A3 (nl) * | 2000-03-01 | 2001-12-04 | Diamant Boart Nv | Buisvormige boor. |
US6637101B2 (en) | 2001-06-22 | 2003-10-28 | Radio Frequency Systems, Inc. | Coaxial cable preparation tool |
US6786684B1 (en) | 2001-08-15 | 2004-09-07 | Robert J. Ecker | Tubular hole cutter |
CA2559991A1 (fr) * | 2005-12-20 | 2007-06-20 | Andy Locke | Outil de coupe rotatif pour coupe discontinue de metal |
JP5318338B2 (ja) * | 2006-08-10 | 2013-10-16 | マックス株式会社 | ノンコアドリルビット |
DE102007018791B3 (de) * | 2007-04-20 | 2008-08-14 | Atlas Diamant Werkzeuge Gmbh | Segmentband für eine Bohrkrone und Bohrkrone |
US20080296069A1 (en) * | 2007-05-30 | 2008-12-04 | Nikola Ljubic | Novel core drill bit housing and core drill bit |
US20140017021A1 (en) * | 2012-07-12 | 2014-01-16 | General Electric Company | Apparatus for removing retainer material |
CN105410098B (zh) * | 2015-09-02 | 2018-07-31 | 九阳股份有限公司 | 一种便于制作筋道面条的面条机 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH414438A (de) | 1962-11-03 | 1966-05-31 | Fischer Artur | Hartmetallbohrer |
US3308689A (en) * | 1963-11-22 | 1967-03-14 | Euglish Electric Company Ltd | Trepanning tools |
DE3407427A1 (de) * | 1984-02-29 | 1985-08-29 | Hawera Probst Gmbh + Co, 7980 Ravensburg | Bohrkrone |
DE3408093A1 (de) * | 1984-03-05 | 1985-09-05 | Hilti Ag, Schaan | Bohrkrone |
EP0340340A1 (fr) * | 1988-04-25 | 1989-11-08 | Wolfgang Meier | Procédé pour la fabrication d'un trépan carottier diamanté |
DE3930250A1 (de) | 1989-09-11 | 1991-03-14 | Licentia Gmbh | Mit der arbeitsspindel einer handgefuehrten elektrowerkzeugmaschine vereinigbarer aufnahmeschaft |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1115010A (en) * | 1913-12-23 | 1914-10-27 | Frank Schimpfle | Device in coring-tools for cutting cylinders. |
US4274769A (en) * | 1978-04-21 | 1981-06-23 | Acker Drill Company, Inc. | Impregnated diamond drill bit construction |
JPS5854921B2 (ja) * | 1980-12-10 | 1983-12-07 | 株式会社ミヤナガ | コアドリル |
KR870000798Y1 (ko) * | 1985-04-24 | 1987-03-05 | 김관기 | 상수도용 천공기 |
-
1994
- 1994-10-15 DE DE4436915A patent/DE4436915A1/de not_active Ceased
-
1995
- 1995-07-14 AT AT95810465T patent/ATE205769T1/de not_active IP Right Cessation
- 1995-07-14 DE DE59509611T patent/DE59509611D1/de not_active Expired - Fee Related
- 1995-07-14 EP EP95810465A patent/EP0706870B1/fr not_active Expired - Lifetime
- 1995-07-14 DK DK95810465T patent/DK0706870T3/da active
- 1995-09-26 KR KR1019950031827A patent/KR100351536B1/ko not_active IP Right Cessation
- 1995-10-06 CA CA002160044A patent/CA2160044C/fr not_active Expired - Fee Related
- 1995-10-12 FI FI954849A patent/FI105537B/fi active
- 1995-10-12 US US08/542,087 patent/US5569002A/en not_active Expired - Lifetime
- 1995-10-13 HU HU9502974A patent/HU216525B/hu not_active IP Right Cessation
- 1995-10-13 CN CN95118496A patent/CN1081116C/zh not_active Expired - Fee Related
- 1995-10-16 JP JP7267206A patent/JPH08197533A/ja active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH414438A (de) | 1962-11-03 | 1966-05-31 | Fischer Artur | Hartmetallbohrer |
US3308689A (en) * | 1963-11-22 | 1967-03-14 | Euglish Electric Company Ltd | Trepanning tools |
DE3407427A1 (de) * | 1984-02-29 | 1985-08-29 | Hawera Probst Gmbh + Co, 7980 Ravensburg | Bohrkrone |
DE3408093A1 (de) * | 1984-03-05 | 1985-09-05 | Hilti Ag, Schaan | Bohrkrone |
EP0340340A1 (fr) * | 1988-04-25 | 1989-11-08 | Wolfgang Meier | Procédé pour la fabrication d'un trépan carottier diamanté |
DE3930250A1 (de) | 1989-09-11 | 1991-03-14 | Licentia Gmbh | Mit der arbeitsspindel einer handgefuehrten elektrowerkzeugmaschine vereinigbarer aufnahmeschaft |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1637262A1 (fr) * | 2003-06-05 | 2006-03-22 | Kabushiki Kaisha Miyanaga | Carotteuse |
EP1637262B1 (fr) * | 2003-06-05 | 2014-03-05 | Kabushiki Kaisha Miyanaga | Carotteuse |
Also Published As
Publication number | Publication date |
---|---|
DK0706870T3 (da) | 2001-11-26 |
CA2160044A1 (fr) | 1996-04-16 |
HU216525B (hu) | 1999-07-28 |
ATE205769T1 (de) | 2001-10-15 |
HU9502974D0 (en) | 1995-12-28 |
FI954849A (fi) | 1996-04-16 |
FI105537B (fi) | 2000-09-15 |
KR960013598A (ko) | 1996-05-22 |
HUT72770A (en) | 1996-05-28 |
CN1081116C (zh) | 2002-03-20 |
JPH08197533A (ja) | 1996-08-06 |
US5569002A (en) | 1996-10-29 |
EP0706870B1 (fr) | 2001-09-19 |
DE59509611D1 (de) | 2001-10-25 |
CN1129635A (zh) | 1996-08-28 |
KR100351536B1 (ko) | 2002-12-28 |
DE4436915A1 (de) | 1996-04-18 |
FI954849A0 (fi) | 1995-10-12 |
CA2160044C (fr) | 1998-12-15 |
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