WO1998032564A1 - Tiefbohrwerkzeug - Google Patents
Tiefbohrwerkzeug Download PDFInfo
- Publication number
- WO1998032564A1 WO1998032564A1 PCT/EP1998/000038 EP9800038W WO9832564A1 WO 1998032564 A1 WO1998032564 A1 WO 1998032564A1 EP 9800038 W EP9800038 W EP 9800038W WO 9832564 A1 WO9832564 A1 WO 9832564A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- drilling tool
- cutting
- deep drilling
- tool according
- base body
- Prior art date
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 63
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 239000000463 material Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/04—Drills for trepanning
- B23B51/0486—Drills for trepanning with lubricating or cooling equipment
- B23B51/0493—Drills for trepanning with lubricating or cooling equipment with exchangeable cutting inserts, e.g. able to be clamped
-
- 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
- E21B10/08—Roller bits
- E21B10/20—Roller bits characterised by detachable or adjustable parts, e.g. legs or axles
-
- 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
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/56—Guiding pads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/06—Drills with lubricating or cooling equipment
- B23B51/063—Deep hole drills, e.g. ejector drills
Definitions
- the invention relates to a deep drilling tool according to the preamble of claim 1.
- Deep drilling tools of this type are known, for example, from the brochures or brochure sheets “botek deep drilling tools” and “botek solid drilling head type 42” from botek refzisions-Bohrtechnik GmbH, 72585 Riederich.
- triangular cutting inserts are used which are interchangeably connected to the drill head and which, like the receptacles assigned to them, are designed such that the cutting inserts are inserted into these receptacles in different positions for the purpose of use all of their six cutting edges can be used.
- the top and bottom sides of the cutting plates are aligned parallel to one another and run perpendicular to peripheral surfaces thereof.
- a cuboid structure of the inserted cutting inserts which is symmetrical with respect to a transverse central plane, is essential, and from these two properties in connection with a preferably square design of the cutting inserts in the top view, it is possible to use all eight cutting edges for use in the receptacles of the deep drilling tool. Compared to the prior art set out at the beginning, this entails a significant improvement in the material utilization and the material costs to be expended.
- the cutting plates are suitably detachably held in receptacles and can either be arranged directly in corresponding receptacles of the base body of the deep drilling tool or in receptacles of holders or cassettes, which in turn are releasably connected to the base body.
- the recordings of the cassettes mentioned or of the base body are naturally identical.
- the cutting plates are provided with top and bottom and peripheral positioning surfaces, which are provided in a defined area and with the proviso that their properties are not caused by the wear which forms in the area of the cutting edges of the cutting plate ver changes so that a change in the position of the cutting plate in the associated receptacle always leads to a reproducible position of the “new” cutting edge.
- the peripheral positioning surfaces are protruding from the surface of the cutting plate Surface sections characterized, the undercuts form chip breakers which serve to facilitate the removal of the chips developed as a result of the drilling process.
- the features of claim 4 are directed to the detailed design of the top and bottom positioning surfaces. These then form step surfaces that protrude from the base plane of the top and bottom sides of the insert. This measure offers the advantage in particular that positioning inaccuracies which arise in the area of worn cutting edges due to "build-up cutting edge formation" are avoided.
- claims 5 and 6 are directed to the further configuration of the cutting plates, which are secured in a manner known per se by screwing into the receptacles assigned to them. It is essential in this context that the bore profile of the bore penetrating this is formed symmetrically to the above-mentioned transverse center plane, so that there are conical sections of this bore on its two sides, via which the support takes place on an appropriately designed screw head.
- the vertical arrangement of the positioning surfaces of the cutting plates and - in connection therewith - the corresponding counter surfaces of the receptacles in accordance with the features of claim 7 is the most practical embodiment which, in addition to being easy to handle, also enables unambiguous positioning.
- the holders already mentioned are also secured according to the features of claim 8 by screwing on the base body of the deep drilling tool.
- claims 9 and 10 are directed to the basic design of different spatial distributions of the cutting plates, which is aimed at the provision of solid, core, form drilling heads or the like.
- FIG. 1 shows an axial section of the drilling head of a deep drilling tool corresponding to a cutting plane I-I of FIG. 2 with cutting plates according to the invention
- Fig. 2 is an end view of the deep drilling tool according to arrow II of Fig. 1;
- Fig. 3 is a sectional view of a central insert inserted into the drill head by means of a holder according to a plane III-III of Fig. 1;
- Fig. 4 is a sectional view of a central, directly in the
- FIG. 5 shows a sectional illustration of an intermediate cutting insert, which is inserted into the drill head by means of a holder, in accordance with a plane VV of FIG. 1;
- Fig. 6 is a sectional view of an intermediate cutting plate inserted directly into the drill head, according to a plane VI-VI of Fig. 1;
- Fig. 8 is a sectional view of the cutting plate according to a plane VIII-VIII of Fig. 7;
- FIGS. 1 to 8 shows a representation of the axial section profile of a bore produced by means of a deep drilling tool corresponding to FIGS. 1 to 8;
- FIG. 10 shows an axial section of an alternative embodiment of a deep drilling tool according to a sectional plane X-X of FIG. 11;
- FIG. 11 is an end view of the deep drilling tool according to arrow XI of FIG. 10;
- FIGS. 10 and 11 shows a representation of the axial section profile of a bore produced by means of a deep drilling tool corresponding to FIGS. 10 and 11;
- FIG. 13 shows an axial section of a further deep drilling tool according to a sectional plane XIII-XIII of FIG. 14;
- FIG. 14 is an end view of the deep drilling tool according to arrow XIV of FIG. 13;
- 15 shows an axial section of the deep drilling tool of FIG. 14 in the plane of the intermediate cutting insert; 16 shows a representation of the axial section profile of a bore produced by means of a deep drilling tool corresponding to FIGS. 13 to 15;
- FIG. 17 shows an end view of a further embodiment of a deep drilling tool according to arrow XVII of FIG. 18;
- FIG. 18 shows an axial section of the deep drilling tool according to a plane XVIII-XVIII of FIG. 17;
- FIGS. 17 to 19 is an axial sectional view of the deep drilling tool corresponding to FIGS. 17 to 19 in the plane of the intermediate cutting insert;
- FIGS. 17 to 19 shows a representation of the axial section profile of a bore produced by means of a deep drilling tool corresponding to FIGS. 17 to 19;
- FIG. 21 shows an enlarged sectional illustration of a centrally arranged cutting plate
- 22 is a sectional view of an intermediate cutting insert.
- FIGS. 1 and 6 show a first embodiment of the drilling head of a deep drilling tool, which consists of a tubular base body 1, one end 2 of which is intended for releasable connection to a boring bar not shown in the drawing and is provided with a suitable internal thread 3.
- the end 4 opposite the end 2 is provided in a manner to be described in more detail below with an interchangeable drilling tool in the form of cutting plates 4, 5 and 6. While the cutting plate 4 is located in a central area, the cutting plates 5 are accommodated in an intermediate position and the cutting plate 6 is in the radially outermost position.
- the guide strips 11 have on the top, i.e. on its side protruding from the base body 1 and equally on the opposite side of this, cylindrically convex curved surfaces and the groove base of the grooves 12 is adapted to this profile.
- the guide strips form components which are exposed to considerable wear during the drilling operation, so that due to this design of the surfaces there is the possibility of inserting the strips in the opposite direction into the grooves 12 which extend parallel to the axis 16 of the base body 1 when wear occurs.
- the radially outermost regions of the guide strips 11 are located on a common radius 14 with the radially outer secondary cutting edge of the cutting plate 6, which extends parallel to the axis 16.
- the deep drilling head shown is designed as a solid drilling tool, so that the cutting edges of the individual cutting inserts capture the entire drilling cross section during the drilling operation in accordance with a cutting profile that is dependent on their other spatial arrangement.
- the drilling head is connected via the internal thread 3 to a boring bar, which in turn is connected to a drilling drive.
- a drilling oil is introduced into the ring oil supply apparatus, which comprises the drill rod in a rotationally symmetrical manner, into the annular space 17, which is delimited by the inner walls of the borehole radially on the outside and the contour of the base body 1 on the radially inside, which flows between the guide strips 11 and absorbs the drilling chips released as a result of the drilling operation this is washed out via the jaw 8 and the jaw 9, the cavity 10 and the boring bar.
- the drilling oil has a cooling effect on the drill head and in particular on the cutting bodies.
- the reaction forces resulting from the drilling operation are transmitted to the borehole wall via the guide strips 11, so that the tool is supported on the borehole wall during the drilling feed.
- the guide strips 11 also have a smoothing function which is exerted on the borehole walls.
- the inserts 5 to 6 are designed as indexable inserts and are globally designed as cuboid components. In their respective installation position, which is determined by the position, in particular the arrangement, of corresponding receptacles of the drill head, one cutting edge is in an active position.
- the cutting bodies 4, 5 can in principle be connected to the drill head with an intermediate arrangement of holders 18, 19 - as shown in FIGS. 3 and 5.
- the holders 18, 19 are secured by means of screws 20, 21 in corresponding receptacles of the drill head that are adapted to the bore pattern to be created.
- Cutting plates 4, 5 are in turn secured by screws 22, 23 in corresponding receptacles 24, 25 of the holders 18, 19.
- Cutting plate is designed as a cubic, in the plan view square base body, which is equipped with a total of eight cutting edges 26, 26 ', 26' 'and 26' '', so that each of these cutting edges in an active by corresponding insertion of the cutting body in the intended receptacle Position is transferable.
- the cutting body is provided with a central bore 27, which - seen in the direction of its axis 28 - is profiled and this bore profile in turn runs symmetrically with respect to a transverse center plane 29.
- the bore is thus characterized by a central cylindrical section 30, on which the outer side widens on both sides Connect conical sections 31.
- the conical sections 31 serve as contact surfaces for the correspondingly designed counter surfaces of a screw head, which is preferably arranged countersunk within the bore 28.
- the symmetry property with respect to the transverse center plane 29 is an essential prerequisite for inserting the cutting body 4 in the opposite way into the respective receptacle, so that all eight cutting edges can be used with a view to effective material use.
- These undercuts 32 serve to provide the optimal cutting geometry in the area of the mentioned cutting edges and to improve chip evacuation. In a central, and thus the transverse center plane 29 assigned area, which is no longer covered by the undercuts 32, this results in a defined contact surface 33, via which the insert can be fixed in its respective receptacle in a reproducible manner.
- FIG. 9 denotes a workpiece to be machined, into which a bore 35 is to be made, the axial section profile 36 of which is shown on the bottom of the borehole.
- the individual cutting plates 4 to 6 are shown offset in the circumferential direction, and the profile 36 results from their respective spatial position, which is structurally determined by the structure of the drill head.
- 10 to 12 show a further exemplary embodiment of a drill head, the number of cutting plates of which corresponds to that of the previous exemplary embodiment, the cutting plates, however, of a different type. have an arrangement which leads to the axial section profile 36 'shown in FIG. 12.
- FIG. 13 to 16 show a further exemplary embodiment of a drilling head which is equipped with a central 4, an intermediate 5 and a radially outer cutting plate 6, the rest of which corresponds in its basic structure to the embodiments already described above, the spatial Arrangement of the aforementioned cutting plates leads to the axial section profile 36 ′′ shown in FIG. 16.
- FIGS. 17 to 19 show a further exemplary embodiment of a drilling head which only consists of two cutting plates, namely a centrally arranged cutting plate 4 and a radially outer cutting plate 6.
- This constellation results in the axial section profile 36 ′′ ′′ of the bore (FIG.
- the basic structure of this drill head also corresponds to that of the previous ones.
- the essential feature of the cutting plates 4, 5 shown in FIGS. 21 and 22 is that they are provided in a central area surrounding the bore 27 with ring steps 37 that apply on the outside, again symmetrically with respect to the respective transverse center planes 29 (not shown in these drawing figures) ( Fig. 8).
- ring steps 37 that apply on the outside, again symmetrically with respect to the respective transverse center planes 29 (not shown in these drawing figures) ( Fig. 8).
- positioning surfaces which are structurally defined by the contact surface 33 and the ring step 37, are not affected by the wear process in the area of the cutting edges. -.
- the drill head equipped according to the invention enables increased material utilization due to the expanded turning options of the inserted cutting inserts. Due to the fact that the contact or positioning surfaces of the individual cutting inserts are not touched by the wear process, high machining accuracy is achieved in a simple manner, and without an increased adjustment effort.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Drilling Tools (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98902981A EP0958084A1 (de) | 1997-01-28 | 1998-01-07 | Tiefbohrwerkzeug |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29701375U DE29701375U1 (de) | 1997-01-28 | 1997-01-28 | Tiefbohrwerkzeug |
DE29701375.0 | 1997-01-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998032564A1 true WO1998032564A1 (de) | 1998-07-30 |
Family
ID=8035118
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1998/000038 WO1998032564A1 (de) | 1997-01-28 | 1998-01-07 | Tiefbohrwerkzeug |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0958084A1 (de) |
DE (1) | DE29701375U1 (de) |
WO (1) | WO1998032564A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012172537A1 (en) * | 2011-06-13 | 2012-12-20 | Iscar Ltd. | Cutting tool, cutting tool body and cutting tool support pad therefor |
US20140154022A1 (en) * | 2011-05-16 | 2014-06-05 | Takuji Nomura | Drill head for deep hole cutting |
EP2560778B1 (de) | 2010-04-23 | 2017-09-06 | TBT Tiefbohrtechnik GmbH + Co | Bohrkopf für ein tiefbohrwerkzeug zum bta-tiefbohren und tiefbohrwerkzeug |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0014423A1 (de) * | 1979-02-01 | 1980-08-20 | MAPAL Fabrik für Präzisionswerkzeuge Dr. Kress KG | Bohrkopf |
DE2926462A1 (de) * | 1979-06-30 | 1981-01-08 | Walter Gmbh Montanwerke | Mit wendeschneidplatten bestuecktes bohrwerkzeug |
US4963061A (en) * | 1989-04-07 | 1990-10-16 | Gte Valenite Corporation | Ceramic cutting insert |
DE4209084A1 (de) * | 1992-03-20 | 1993-09-23 | Neumo Grundbesitz Gmbh | Werkzeughalterung fuer schneidkoerper |
US5478178A (en) * | 1994-06-29 | 1995-12-26 | Valenite Inc. | High speed rotary boring tool |
-
1997
- 1997-01-28 DE DE29701375U patent/DE29701375U1/de not_active Expired - Lifetime
-
1998
- 1998-01-07 EP EP98902981A patent/EP0958084A1/de not_active Withdrawn
- 1998-01-07 WO PCT/EP1998/000038 patent/WO1998032564A1/de not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0014423A1 (de) * | 1979-02-01 | 1980-08-20 | MAPAL Fabrik für Präzisionswerkzeuge Dr. Kress KG | Bohrkopf |
DE2926462A1 (de) * | 1979-06-30 | 1981-01-08 | Walter Gmbh Montanwerke | Mit wendeschneidplatten bestuecktes bohrwerkzeug |
US4963061A (en) * | 1989-04-07 | 1990-10-16 | Gte Valenite Corporation | Ceramic cutting insert |
DE4209084A1 (de) * | 1992-03-20 | 1993-09-23 | Neumo Grundbesitz Gmbh | Werkzeughalterung fuer schneidkoerper |
US5478178A (en) * | 1994-06-29 | 1995-12-26 | Valenite Inc. | High speed rotary boring tool |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2560778B1 (de) | 2010-04-23 | 2017-09-06 | TBT Tiefbohrtechnik GmbH + Co | Bohrkopf für ein tiefbohrwerkzeug zum bta-tiefbohren und tiefbohrwerkzeug |
US20140154022A1 (en) * | 2011-05-16 | 2014-06-05 | Takuji Nomura | Drill head for deep hole cutting |
US9656327B2 (en) * | 2011-05-16 | 2017-05-23 | Botek Präzisionsbohrtechnik Gmbh | Drill head for deep hole cutting |
WO2012172537A1 (en) * | 2011-06-13 | 2012-12-20 | Iscar Ltd. | Cutting tool, cutting tool body and cutting tool support pad therefor |
KR20140023380A (ko) * | 2011-06-13 | 2014-02-26 | 이스카 엘티디. | 절삭 공구, 절삭 공구 본체 및 이를 위한 절삭 공구 지지 패드 |
JP2014519418A (ja) * | 2011-06-13 | 2014-08-14 | イスカーリミテッド | 切削工具、切削工具本体およびそれらのための切削工具支持パッド |
US8992138B2 (en) | 2011-06-13 | 2015-03-31 | Iscar, Ltd. | Cutting tool, cutting tool body and cutting tool support pad therefor |
KR101686288B1 (ko) * | 2011-06-13 | 2016-12-13 | 이스카 엘티디. | 절삭 공구, 절삭 공구 본체 및 이를 위한 절삭 공구 지지 패드 |
Also Published As
Publication number | Publication date |
---|---|
DE29701375U1 (de) | 1997-04-10 |
EP0958084A1 (de) | 1999-11-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3007440C2 (de) | ||
DE4421002A1 (de) | Kombinationswerkzeug | |
DE19729249A1 (de) | Spannfutter | |
CH648226A5 (de) | In einem halter eines maschinenwerkzeuges, insbesondere drehwerkzeuges, einsetzbarer schneidplattentraeger. | |
DE2717714C2 (de) | Kernbohrwerkzeug | |
DE102008045674A1 (de) | Maschinenwerkzeug mit verstellbarer Schneidplatte | |
DE2631666C3 (de) | Werkzeug zum gezogenen Aufbohren von Rohren | |
DE10333061B4 (de) | Bohrkopf | |
DE2857655C2 (de) | Vorrichtung zum Aufspannen von Wirkstücken auf einem Werkzeugmaschinentisch | |
EP0264822B1 (de) | Gewindebohrer | |
DE3428481C1 (de) | Werkzeughalter mit Radialverstellvorrichtung fuer ein Werkzeug,insbesondere ein Ausdrehwerkzeug | |
CH668723A5 (de) | Revolverkopf fuer eine drehmaschine und hierzu passende werkzeughalter. | |
DE3221973A1 (de) | Spannhuelse | |
DE3434308A1 (de) | Spannfutter | |
DE19643590A1 (de) | Ausdrehwerkzeug | |
EP0958084A1 (de) | Tiefbohrwerkzeug | |
EP0264599B1 (de) | Aufbohrwerkzeug | |
DE3730589A1 (de) | Entgrat- und anfaswerkzeug | |
DE102004008166A1 (de) | Werkzeug zur spanenden Bearbeitung von Präzisionsbohrungen | |
DE3523919C2 (de) | ||
DE2257653C3 (de) | Bohrkopf | |
DE2833778A1 (de) | Fuehrungsleiste fuer bohrkronen, bohrkoepfe o.dgl. | |
EP3670047B1 (de) | Bohrvorschubeinheit | |
DE102007060078B3 (de) | Räumvorrichtung | |
EP0390096A2 (de) | Vorrichtung zum Spannen von Werkstücken |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): JP US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 1998902981 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 1998902981 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: JP Ref document number: 1998531523 Format of ref document f/p: F |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1998902981 Country of ref document: EP |