EP0171358B1 - Outil de forage pour perceuses à main - Google Patents
Outil de forage pour perceuses à main Download PDFInfo
- Publication number
- EP0171358B1 EP0171358B1 EP85810341A EP85810341A EP0171358B1 EP 0171358 B1 EP0171358 B1 EP 0171358B1 EP 85810341 A EP85810341 A EP 85810341A EP 85810341 A EP85810341 A EP 85810341A EP 0171358 B1 EP0171358 B1 EP 0171358B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- face
- longitudinal grooves
- drilling tool
- rearward end
- grooves
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
- B25D17/084—Rotating chucks or sockets
- B25D17/088—Rotating chucks or sockets with radial movable locking elements co-operating with bit shafts specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
- B25D2217/003—Details relating to chucks with radially movable locking elements
- B25D2217/0034—Details of shank profiles
-
- 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
- Y10T279/00—Chucks or sockets
- Y10T279/17—Socket type
- Y10T279/17042—Lost motion
- Y10T279/17085—Key retainer
-
- 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
- Y10T408/907—Tool or Tool with support including detailed shank
Definitions
- the invention relates to a drilling tool for hand drills, with an essentially cylindrical insertion end according to the preamble of patent claim 1.
- the known hand drills which are used to produce bores in hard subsurface materials, such as concrete, stone and the like, can essentially be divided into three groups, namely in drilling machines, impact drills and rotary hammers.
- the pure drilling machines which are of minor importance today, are simple hand-held devices that only give the drilling tool used a rotary movement. To insert the drilling tool, these devices have a chuck in which the generally cylindrical insertion end of the drilling tool can be clamped.
- the impact drills also have a chuck in which the drilling tools can be clamped as mentioned above.
- the chuck is arranged on an axially movable spindle, on which a vibration movement is exerted during the drilling process. This vibration movement is generated by device-internal means, such as ratchet disks, and transmitted from the chuck to the drilling tool firmly clamped therein.
- the hammer drills are by far the most important today. These devices also have a chuck in which, in contrast to the drilling machines and the impact drills, the drilling tool is axially movable to a limited extent, but in a form-fitting manner for transmitting the rotary movement.
- a hammer piston is moved back and forth, which, directly or with the interposition of, for example, a transmission bolt, gives the drilling tool a hammering motion is available for the drilling process
- a drilling tool is known from DE-A-3 239 875, the insertion end of which has grooves distributed to create the driving surfaces in such a way that clamping jaws of a chuck cannot fall into the grooves if such a drilling tool is used in an impact drill.
- the same situation is created as when a drilling tool with a cylindrical insertion end is clamped in an impact drill, i. H. due to the pure frictional connection, considerable clamping forces have to be applied by the chuck. Since only a vibratory movement acts axially on the drilling tool, the forces acting in this direction are not significant, but on the contrary, all the more forces that are required for the transmission of the torque.
- This combination tool therefore fulfills the task that it can be used universally in the device types of interest, but does not lead to any further improvement when used in impact drills compared to conventional tools.
- DE-U-8 337 365 has disclosed a further solution, according to which the insertion end has a relatively long groove which is closed towards the rear end face to create driving surfaces. While the same situation occurs with the use of such a drilling tool in a hammer drill as with the drilling tool described above, this design of the groove was intended to improve the use in impact drills. With a limited number of chucks, ie those chucks where the rear edge of the jaws is a sufficient distance from the chuck-side stop surface che for the rear end of the drilling tools, an advantage is achieved in that the jaws can fully immerse in the grooves at the insertion end of the drilling tool.
- the drilling tool known from FR-A-2 282 323 in turn has a unitary insertion end and is designed for rotary hammers.
- the drilling tool is held in the rotary hammers by fixed drivers in the chuck.
- the inserting driver surfaces have flats which are equivalent to the function of grooves, flats which are open towards the rear end of the insertion end and are arranged at a distance from the rear end side are connected with one another by a quemut.
- the invention has for its object to provide a drilling tool that is easy to manufacture and that, when used in all hand drills, leads to sufficient mounting and concentricity.
- the object is achieved in that the first longitudinal grooves which are open towards the rear end face and the second longitudinal grooves which are arranged at a distance from the rear end face are arranged with mutually overlapping axes of symmetry.
- At least one longitudinal groove which is open towards the rear end face is overlapped with at least one longitudinal groove which is closed towards the rear end face in such a way that, in a sense, one or more double functional grooves are formed.
- the longitudinal groove, which is open towards the rear end ensures that the clamping jaws of any type of chuck can be fully immersed and thus, in addition to the rotary drive, create an adequate guide that is decisive for the concentricity of the drilling tool.
- the fact is taken into account here according to which the axial mounting of the drilling tools is only of minor importance when used in impact drills and can be easily accomplished by pure frictional connection in comparison to the rotary driving.
- the possibility is further created that the chuck of the rotary hammers does not have to be opened so far until the projections correspond to the outer contour of the insertion end. If the chuck is only opened until the protrusions are still immersed in the longitudinal grooves that are open to the rear end face, this saves time in closing and unscrewing the chuck and, on the other hand, a tangible search aid for locating the longitudinal grooves is created by the drilling tool against the not fully disengaged projections and is rotated until the boring tool can be pushed completely into the chuck by immersing the projections in the longitudinal grooves open towards the rear end face.
- the cross-sectional area of the longitudinal grooves open towards the rear end face is preferably smaller than the cross-sectional area of the longitudinal grooves arranged at a distance from the rear end face.
- the insertion end In line with the common chucks on the market, the insertion end has three or a multiple of three longitudinal grooves open to the rear end face with the same angular spacing.
- the longitudinal grooves arranged at a distance from the rear end face are essentially circular in cross-section.
- Figures 1 and 2 show the insertion end 2 of a drilling tool, generally designated 1.
- this insertion end 2 has three longitudinal grooves 4 which are evenly distributed over the circumference and open towards the rear end face 3.
- These longitudinal grooves 4, which are open towards the free end face 3, have a V-shaped cross section.
- These longitudinal grooves 4, which are open toward the free end face 3, are overlapped symmetrically by longitudinal grooves 5 which are arranged at a distance from the rear end face 3 and which have an axially limited length.
- two closed longitudinal grooves 5 are arranged one behind the other along a longitudinal groove 4 which is open towards the rear end face 3.
- shoulder surfaces 6, 7 are formed in the transition area. These shoulder surfaces 6, 7 limit the axial displaceability when using such a drilling tool 1 in rotary hammers, the rotary hammers in a known manner have a chuck with adjustable jaws.
- shoulder surface 6 facing away from the rear end face, since when the drilling tool 1 is lifted from the substrate material to be machined, it must absorb the blows of the hammer piston on the drill hammer side that still act on the drilling tool 1.
- the opposite shoulder surface 7, on the other hand, is hardly exposed to stresses since this direction of movement counteracts the blows of the hammer piston.
- the longitudinal grooves 4 which are open towards the rear end face 3 have a continuous groove base which also penetrates the longitudinal grooves 5 arranged at a distance from the rear end face 3. Thanks to this continuous groove base, when using the drilling tools 1 with such an insertion end 2 in impact drills, a central guidance is achieved in every case, regardless of the axial position of the chuck jaws of the chuck.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
- Percussive Tools And Related Accessories (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT85810341T ATE44252T1 (de) | 1984-08-09 | 1985-07-24 | Bohrwerkzeug fuer handbohrmaschinen. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3429419 | 1984-08-09 | ||
DE19843429419 DE3429419A1 (de) | 1984-08-09 | 1984-08-09 | Bohrwerkzeug fuer handbohrmaschinen |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0171358A2 EP0171358A2 (fr) | 1986-02-12 |
EP0171358A3 EP0171358A3 (en) | 1987-08-26 |
EP0171358B1 true EP0171358B1 (fr) | 1989-06-28 |
Family
ID=6242739
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85810341A Expired EP0171358B1 (fr) | 1984-08-09 | 1985-07-24 | Outil de forage pour perceuses à main |
Country Status (7)
Country | Link |
---|---|
US (1) | US4655651A (fr) |
EP (1) | EP0171358B1 (fr) |
JP (1) | JPS6144505A (fr) |
AT (1) | ATE44252T1 (fr) |
CA (1) | CA1239040A (fr) |
DE (2) | DE3429419A1 (fr) |
DK (1) | DK163112C (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4019428A1 (de) * | 1990-06-19 | 1992-01-02 | Fette Wilhelm Gmbh | Schaftwerkzeug, insbesondere schaftfraeser |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3514807C2 (de) * | 1984-04-25 | 1994-12-22 | Canon Kk | Vorrichtung mit einer Flüssigkristallzelle, zum Ansteuern einer Transistoranordnung |
DE3515555A1 (de) * | 1985-04-30 | 1986-11-06 | Gebrüder Heller GmbH Werkzeugfabrik, 2807 Achim | Werkzeugaufnahme fuer bohrmaschinen, bohrvorrichtung sowie bohrer und bohrersatz |
DE3817644A1 (de) * | 1988-05-25 | 1989-11-30 | Hilti Ag | Werkzeug mit laengsnuten am einsteckende |
FR2635039B1 (fr) * | 1988-08-05 | 1990-11-02 | Prospection & Inventions | Foret comprenant une queue avec des rainures |
JP3372251B2 (ja) * | 1990-10-16 | 2003-01-27 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | 手持ち式工作機械に付属の装置 |
DE9314416U1 (de) * | 1993-09-23 | 1993-12-09 | Plica Werkzeugfabrik Ag, Mollis | Werkzeugschaft |
DE4341970A1 (de) * | 1993-12-09 | 1995-06-14 | Hilti Ag | Werkzeug und Werkzeugaufnahme für Handwerkzeuggeräte |
DE4341969A1 (de) * | 1993-12-09 | 1995-06-14 | Hilti Ag | Werkzeug und Werkzeugaufnahme für Handwerkzeuggeräte |
DE4341971A1 (de) * | 1993-12-09 | 1995-06-14 | Hilti Ag | Werkzeug und Werkzeugaufnahme für Handwerkzeuggeräte |
EP1769868B1 (fr) * | 1998-11-12 | 2012-08-01 | Black & Decker, Inc. | Mandrin et procédé d'assemblage de ce dernier |
CN1149132C (zh) * | 1998-11-12 | 2004-05-12 | 布莱克-德克尔公司 | 卡盘、钻头、其组件及安装方法 |
WO2001014089A1 (fr) * | 1999-07-21 | 2001-03-01 | Black & Decker Inc. | Mandrin a entrainement mecanique |
GB2393931A (en) * | 2002-10-10 | 2004-04-14 | Black & Decker Inc | Tool for a rotary hammer |
ATE460255T1 (de) * | 2003-11-26 | 2010-03-15 | Hilti Ag | Werkzeugaufnahme für ein drehendes und schlagendes werkzeug |
DE10357380A1 (de) * | 2003-12-05 | 2005-06-30 | Hilti Ag | Einsteckende für ein drehendes und/oder schlagendes Werkzeug |
DE102004026850A1 (de) * | 2004-06-02 | 2005-12-29 | Hilti Ag | Einsteckende für ein drehendes und/oder schlagendes Werkzeug |
DE102007056531A1 (de) * | 2007-11-23 | 2009-05-28 | Hilti Aktiengesellschaft | Handwerkzeugmaschine mit Schlagwerkzeugaufnahme und zugeordnetes Werkzeug |
USD790699S1 (en) | 2015-03-25 | 2017-06-27 | Medtronic Ps Medical, Inc. | Surgical tool |
USD782042S1 (en) | 2015-03-25 | 2017-03-21 | Medtronic Ps Medical, Inc. | Surgical tool |
USD800907S1 (en) | 2015-03-25 | 2017-10-24 | Medtronic Ps Medical, Inc. | Surgical tool |
US10080579B2 (en) | 2015-03-25 | 2018-09-25 | Medtronic Ps Medical, Inc. | Pin drive rotary surgical cutting tools and powered handpieces |
USD800906S1 (en) | 2015-03-25 | 2017-10-24 | Medtronic Ps Medical, Inc. | Surgical tool |
US10314610B2 (en) | 2015-03-25 | 2019-06-11 | Medtronic Ps Medical, Inc. | Slanted drive axis rotary surgical cutting tools and powered handpieces |
USD800903S1 (en) | 2016-02-09 | 2017-10-24 | Medtronic Ps Medical, Inc. | Surgical tool |
US10849634B2 (en) | 2018-06-20 | 2020-12-01 | Medtronic Xomed, Inc. | Coupling portion for rotary surgical cutting systems |
US11839920B2 (en) * | 2021-06-28 | 2023-12-12 | Kennametal Inc. | Modular drill and method for using a modular drill |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB191318141A (en) * | 1913-08-09 | 1914-06-25 | David Conacher | Improvements in and connected with Straight Shanks of Drills, Taps, Reamers, and any other Tools adaptable for Chuck-work. |
US2039855A (en) * | 1935-05-06 | 1936-05-05 | Nathaniel B Stone | Chuck |
NL175040C (nl) * | 1974-08-19 | 1984-09-17 | Durofac Kartro As | Booropneeminrichting voor een klopboormachine. |
DE2551125A1 (de) * | 1975-11-14 | 1977-05-26 | Bosch Gmbh Robert | Einrichtung zur drehmomentuebertragung |
DK333581A (da) * | 1981-07-24 | 1983-01-25 | Duforac Kartro A S | Vaerktoejsskaft isaer til slag eller hammerbor |
DE3239875A1 (de) * | 1981-11-11 | 1983-06-16 | Hilti AG, 9494 Schaan | Bohrer fuer handgeraete |
DE8337365U1 (de) * | 1983-12-27 | 1984-03-22 | Gebrüder Heller GmbH Werkzeugfabrik, 2807 Achim | Bohrer fuer handbohrmaschinen |
-
1984
- 1984-08-09 DE DE19843429419 patent/DE3429419A1/de not_active Withdrawn
-
1985
- 1985-07-15 JP JP60154359A patent/JPS6144505A/ja active Granted
- 1985-07-24 EP EP85810341A patent/EP0171358B1/fr not_active Expired
- 1985-07-24 AT AT85810341T patent/ATE44252T1/de not_active IP Right Cessation
- 1985-07-24 DE DE8585810341T patent/DE3571214D1/de not_active Expired
- 1985-08-07 CA CA000488235A patent/CA1239040A/fr not_active Expired
- 1985-08-07 DK DK359485A patent/DK163112C/da not_active IP Right Cessation
- 1985-08-08 US US06/763,811 patent/US4655651A/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4019428A1 (de) * | 1990-06-19 | 1992-01-02 | Fette Wilhelm Gmbh | Schaftwerkzeug, insbesondere schaftfraeser |
Also Published As
Publication number | Publication date |
---|---|
JPH0472642B2 (fr) | 1992-11-18 |
DK163112B (da) | 1992-01-20 |
US4655651A (en) | 1987-04-07 |
DK163112C (da) | 1992-06-22 |
EP0171358A3 (en) | 1987-08-26 |
JPS6144505A (ja) | 1986-03-04 |
ATE44252T1 (de) | 1989-07-15 |
EP0171358A2 (fr) | 1986-02-12 |
CA1239040A (fr) | 1988-07-12 |
DE3429419A1 (de) | 1986-02-20 |
DE3571214D1 (en) | 1989-08-03 |
DK359485D0 (da) | 1985-08-07 |
DK359485A (da) | 1986-02-10 |
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