EP0542683A1 - Outil pour forage de frappe et porte-outil pour les outils de forage de frappe - Google Patents
Outil pour forage de frappe et porte-outil pour les outils de forage de frappe Download PDFInfo
- Publication number
- EP0542683A1 EP0542683A1 EP92810850A EP92810850A EP0542683A1 EP 0542683 A1 EP0542683 A1 EP 0542683A1 EP 92810850 A EP92810850 A EP 92810850A EP 92810850 A EP92810850 A EP 92810850A EP 0542683 A1 EP0542683 A1 EP 0542683A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tool
- grooves
- locking
- cross
- rotary
- 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
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
-
- 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
- Y10T279/17076—Spreading elements
-
- 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
-
- 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
- Y10T408/94—Tool-support
- Y10T408/95—Tool-support with tool-retaining means
Definitions
- the invention relates to a tool which has an essentially circular clamping shaft for insertion into a tool holder of a hand-held power tool intended for impact drilling, which is provided with at least two rotary driving grooves, the lateral flanks of which are loaded when drilling are not diametrically opposed to one another and which are used for the axial insertion of Rotary drivers of the tool holder open into the free end face of the clamping shank and two locking grooves, which are closed for receiving at least one locking body of the tool holder at least at their ends adjacent to the end face of the clamping shank to limit the axial movement of the tool or are reduced in cross section.
- Tools of this type are known for example from DE-PS 3716915 and D-PA 3941646. Tools of this type are designed so that they can only be inserted into a tool holder in a very specific angular position.
- the invention has for its object to design tools according to the type of the main claim so that the clamping shank is weakened less by the necessary locking grooves and rotary driving grooves.
- the two locking grooves are not diametrically opposed to one another.
- the two locking grooves advantageously enclose the smaller of the rotary driving grooves at an angle of less than 180 °. This design reduces the stress peaks that occur during impact drilling within the cross section of the clamping shank.
- Another object of the invention is to design the clamping shank of the tool in such a way that the tool holder of the machine brings about a permanent and secure locking with only one locking body.
- the tool must be designed in such a way that it can also be used in the most widely used heavy rotary hammer.
- This hammer has two diametrically opposed locking bodies in the form of cylindrical rollers which also serve to transmit torque to the tool.
- This double task is achieved according to the invention in a tool mentioned at the outset in that the locking grooves have different cross-sections and, in an advantageous embodiment, the areas of the lead which advance during drilling and which adjoin the circular clamping shank Locking grooves extend approximately point-symmetrically to one another at least over a part of the cross-sectional area.
- the larger of the two locking grooves preferably has a cross-sectional shape that is not part of a circle.
- the tool according to the invention with the enlarged cross-sectional area can thus be locked sufficiently securely in a newly developed, modern rotary hammer with the cost-saving solution of only one locking body and nevertheless be used in the aforementioned rotary hammers which are frequently found on the market.
- the invention therefore also relates to a tool holder for percussion drilling tools with two diametrically opposite rotary drivers of different cross-section, which are provided for axial insertion in rotary driver grooves of tools and with at least one locking body which is guided in a recess in the tool holder and which is for insertion into one of the two locking grooves of the tool is provided.
- the tool holder according to the invention is achieved in that an intermediate perpendicular established on the secant of the opening surface of the recess for the locking body directed towards the tool forms an angle unequal, preferably less than 90 °, with the intermediate perpendicular established on the secant of the smaller rotary driver.
- the in the FIG. 1 and 2 shown clamping shaft 11 has two diametrically opposite rotary driving grooves 14, 15 with the loaded flanks 16, 17 of the rotary driving grooves 14, 15 and the offset locking grooves 12, 13.
- the two locking grooves 12, 13 are not diametrically opposed .
- the perpendicular bisectors built on the secants of the locking grooves 12, 13 enclose the smaller of the two rotary driving grooves 15 at an angle ⁇ that is less than 180 °.
- the rotary driving grooves 14, 15 open into the free end surface 18 of the clamping shaft, so that the tool shaft can be axially inserted into a tool holder which has strip-shaped rotary drivers adapted to the grooves 14, 15. It is obvious that even with the greatest loads and heavy wear, the arrangement of the locking grooves 12, 13 shown leads to a more uniform distribution of the cross-sectional area and thus to a reduction in the voltage peaks and the risk of fatigue failure.
- FIG. 3 and 4 differs from the first exemplary embodiment in that the locking groove 22 has a larger cross-sectional area than the locking groove 23.
- FIG. 5 and 6 shown embodiment differs from that shown in FIG. 1-4 illustrated embodiments in that the locking groove 32 has a cross-sectional contour 39 which is not part of a circle, and whose regions 37, 38 of the locking grooves 32, 33 adjoining the circular clamping shaft run approximately point-symmetrically to one another at least over part of the cross-sectional area, so that this tool can also be used in a known rotary hammer machine in which the torque transmission can only take place by means of two cylindrical rollers, as is shown by the method shown in FIG. 6 can be seen from the circles indicated.
- FIG. 7 shows the tool holder 40 of a rotary hammer in cross section. It has the rotary drivers 44, 45 adapted to the rotary driving grooves 34, 35 of the tool.
- the locking body 49 is guided in the recess 41 of the tool holder 40 and engages in the locking groove 32 of the tool.
- the locking body is offset by an angle ⁇ which is less than 90 ° with respect to the smaller rotary driver.
- the tools according to the invention can be manufactured at the same time with greater fatigue strength at no additional cost on the existing production facilities, while in the tool holder even the manufacturing costs have been reduced by only one locking body and, accordingly, only one breakthrough in the tool holder for the locking body.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
- Gripping On Spindles (AREA)
- Drilling Tools (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4137120A DE4137120A1 (de) | 1991-11-12 | 1991-11-12 | Werkzeug zum schlagbohren und werkzeugaufnahme fuer schlagbohrende werkzeuge |
DE4137120 | 1991-11-12 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0542683A1 true EP0542683A1 (fr) | 1993-05-19 |
EP0542683B1 EP0542683B1 (fr) | 1995-07-19 |
Family
ID=6444580
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92810850A Expired - Lifetime EP0542683B1 (fr) | 1991-11-12 | 1992-11-04 | Outil pour forage de frappe et porte-outil pour les outils de forage de frappe |
Country Status (7)
Country | Link |
---|---|
US (1) | US5286145A (fr) |
EP (1) | EP0542683B1 (fr) |
JP (1) | JP3119954B2 (fr) |
KR (1) | KR100201177B1 (fr) |
DE (2) | DE4137120A1 (fr) |
DK (1) | DK0542683T3 (fr) |
FI (1) | FI97705C (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0584706A2 (fr) * | 1992-08-22 | 1994-03-02 | Robert Bosch Gmbh | Outil pour outils à main |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4313578A1 (de) * | 1993-03-06 | 1994-09-08 | Hilti Ag | Werkzeug und Werkzeugaufnahme für Handwerkzeuggeräte |
DE4313580A1 (de) * | 1993-04-26 | 1994-10-27 | Hilti Ag | Werkzeugeinspannschaft |
DE4403303A1 (de) * | 1994-02-03 | 1995-08-10 | Hilti Ag | Werkzeug und Werkzeugaufnahme für Handwerkzeuggeräte |
DE10058587A1 (de) * | 2000-11-25 | 2002-05-29 | Hilti Ag | Vorrichtung zur Drehmomentübertragung |
DE10241054A1 (de) * | 2002-09-05 | 2004-03-18 | Robert Bosch Gmbh | Werkzeug und Werkzeughalter für eine Handwerkzeugmaschine |
GB2395158B (en) * | 2002-11-14 | 2005-11-16 | Black & Decker Inc | Tool holder for a rotary hammer |
US20040127150A1 (en) * | 2002-12-30 | 2004-07-01 | Jih-Ming Chen | Slip proof device in combination with a bit for a hand drill chuck |
EP1535704B1 (fr) * | 2003-11-26 | 2010-03-10 | HILTI Aktiengesellschaft | Porte-outil pour un outil rotatif à percussion |
KR100809474B1 (ko) | 2006-12-29 | 2008-03-03 | 위니아만도 주식회사 | 디스크 어셈블리 |
US9180528B2 (en) * | 2011-09-30 | 2015-11-10 | The United States Of America As Represented By The Secretary Of The Navy | Extraction device and method |
USD800906S1 (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 |
USD800907S1 (en) | 2015-03-25 | 2017-10-24 | Medtronic Ps Medical, Inc. | Surgical tool |
USD782042S1 (en) | 2015-03-25 | 2017-03-21 | 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 |
USD790699S1 (en) | 2015-03-25 | 2017-06-27 | Medtronic Ps Medical, Inc. | Surgical tool |
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 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2331410A1 (fr) * | 1975-11-14 | 1977-06-10 | Bosch Gmbh Robert | Dispositif pour la transmission de couples de rotation |
WO1988009245A1 (fr) * | 1987-05-20 | 1988-12-01 | Robert Bosch Gmbh | Dispositif de transmission de couple pour outillage electrique a main |
EP0433876A1 (fr) * | 1989-12-16 | 1991-06-26 | HILTI Aktiengesellschaft | Outil pour le forage à percussion et porte-outil pour outil de forage à percussion |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8425400D0 (en) * | 1984-10-08 | 1984-11-14 | Dom Holdings Plc | Tool |
DE3539912A1 (de) * | 1985-11-11 | 1987-05-14 | Hilti Ag | Werkzeughalter fuer bohr- und meisselwerkzeuge |
DE3824894A1 (de) * | 1988-07-22 | 1990-01-25 | Bosch Gmbh Robert | Einrichtung an handwerkzeugmaschinen zur drehmomentuebertragung |
FR2635039B1 (fr) * | 1988-08-05 | 1990-11-02 | Prospection & Inventions | Foret comprenant une queue avec des rainures |
DE4105414A1 (de) * | 1991-02-21 | 1992-08-27 | Hilti Ag | Werkzeug und werkzeughalter fuer handwerkzeuggeraete |
-
1991
- 1991-11-12 DE DE4137120A patent/DE4137120A1/de not_active Withdrawn
-
1992
- 1992-11-04 DK DK92810850.5T patent/DK0542683T3/da active
- 1992-11-04 EP EP92810850A patent/EP0542683B1/fr not_active Expired - Lifetime
- 1992-11-04 DE DE59202948T patent/DE59202948D1/de not_active Expired - Lifetime
- 1992-11-11 FI FI925110A patent/FI97705C/fi active
- 1992-11-11 KR KR1019920021089A patent/KR100201177B1/ko not_active IP Right Cessation
- 1992-11-12 JP JP04302353A patent/JP3119954B2/ja not_active Expired - Lifetime
- 1992-11-12 US US07/975,191 patent/US5286145A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2331410A1 (fr) * | 1975-11-14 | 1977-06-10 | Bosch Gmbh Robert | Dispositif pour la transmission de couples de rotation |
WO1988009245A1 (fr) * | 1987-05-20 | 1988-12-01 | Robert Bosch Gmbh | Dispositif de transmission de couple pour outillage electrique a main |
EP0433876A1 (fr) * | 1989-12-16 | 1991-06-26 | HILTI Aktiengesellschaft | Outil pour le forage à percussion et porte-outil pour outil de forage à percussion |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0584706A2 (fr) * | 1992-08-22 | 1994-03-02 | Robert Bosch Gmbh | Outil pour outils à main |
EP0584706A3 (en) * | 1992-08-22 | 1994-08-10 | Bosch Gmbh Robert | Tool for portable handtools |
Also Published As
Publication number | Publication date |
---|---|
JPH05277820A (ja) | 1993-10-26 |
FI97705B (fi) | 1996-10-31 |
DK0542683T3 (da) | 1995-11-27 |
DE4137120A1 (de) | 1993-05-13 |
FI97705C (fi) | 1997-02-10 |
JP3119954B2 (ja) | 2000-12-25 |
FI925110A0 (fi) | 1992-11-11 |
KR100201177B1 (ko) | 1999-06-15 |
US5286145A (en) | 1994-02-15 |
EP0542683B1 (fr) | 1995-07-19 |
FI925110A (fi) | 1993-05-13 |
DE59202948D1 (de) | 1995-08-24 |
KR930009716A (ko) | 1993-06-21 |
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