EP0739266A1 - Einrichtung an handwerkzeugmaschinen zur drehmitnahme von werkzeugen - Google Patents
Einrichtung an handwerkzeugmaschinen zur drehmitnahme von werkzeugenInfo
- Publication number
- EP0739266A1 EP0739266A1 EP95903257A EP95903257A EP0739266A1 EP 0739266 A1 EP0739266 A1 EP 0739266A1 EP 95903257 A EP95903257 A EP 95903257A EP 95903257 A EP95903257 A EP 95903257A EP 0739266 A1 EP0739266 A1 EP 0739266A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tool
- circumference
- rotary
- longitudinal side
- tool holder
- 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
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
- B25D2217/0003—Details of shafts of percussive tool bits
-
- 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
- B25D2217/0038—Locking members of special shape
-
- 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
- B25D2217/0038—Locking members of special shape
- B25D2217/0049—Roll-shaped locking members
-
- 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
- Y10T279/17068—Rotary socket
-
- 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
- Y10T279/17666—Radially reciprocating jaws
- Y10T279/17692—Moving-cam actuator
- Y10T279/17743—Reciprocating cam sleeve
- Y10T279/17752—Ball or roller jaws
-
- 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 is based on a device
- Such a device is known from EP-433 876 AI, the trapezoidal or rectangular rotary driving grooves on the tool shank and the corresponding rotating driving bars on the tool holder having a limited wear reserve on their rotating driving flanks.
- the webs between the grooves or the strips in the receiving bore of the tool holder break away afterwards.
- the rear flank of the trapezoidal or rectangular rotary driving grooves is subjected to hard torque impacts, particularly when tilting chisel work, which results in notch effects , which promotes a breakout of the strips on the tool holder and the webs between the grooves on the tool shank.
- a tendon-shaped recess on the tool shank which lies opposite an essentially trapezoidal groove for rotary driving.
- the tendon-shaped recess serves to improve the compatibility in that a tool shank designed in this way can be used in hand tool devices with turning driver strips of different widths on their tool holder.
- the rotation is carried out on one side, almost exclusively on the rotational driving flank of the opposite groove in the drive direction, since the locking bodies of the tool holder absorb only a small amount of torque in the locking recesses assigned to them on the tool shank.
- the device according to the invention is designed with the characterizing features of patent claim 1, wherein in addition to the at least two mutually at least approximately opposite rotary drivers, a further rotary driver with a chord-shaped outlet on at least one longitudinal side of the tool shaft or the tool holder is arranged in the circumferential area which is at least approximately opposite the axial locking.
- This solution advantageously allows the wear reserve for the tool holder to be increased and the notch effect on the tool shank to be reduced or avoided altogether in this area due to the flat rotational driving.
- Another5 advantage is that when clamping such tools, for example in the borehole, they are also loaded with a maximum load Reverse gear must be operated with an abruptly responding overload clutch.
- FIG. 1 shows a tool holder of a rotary hammer with inserted tool in cross section in an enlarged view
- FIG. 2 shows a longitudinal section through the front end of the tool holder according to II-II from FIG. 1
- FIG. 3 shows the tool shank.
- FIGS. 4 and 5, 6 and 7 and 8 and 9 show three further exemplary embodiments of a tool shank designed according to the invention in cross section and the correspondingly designed tool holder.
- the device according to the invention on machine tools for the rotary driving of striking and / or drilling tools, in particular on impact drills and hammer drills or impact devices essentially consists of a tool holder 10 which can be driven in the direction of the arrow and a tool shaft 11 inserted therein of a tool 12 used for drilling and / or striking.
- 1 shows a cross section through such a device as a first exemplary embodiment in connection with FIGS. 2 and 3.
- FIG. 2 with its front end in longitudinal section does not form in FIG shown, according to WO 88/09245 known manner, the end of a hollow cylindrical, driven tool spindle of a rotary hammer, in which a striker is axially movably received, which is cyclically struck by a hammer mechanism of the rotary hammer on the end face of the tool shaft 1, which in the receiving bore 13th of the tool holder 10 is used.
- the tool holder 10 has a radial opening 14 in which a locking body 15 is inserted.
- the extending locking locking body 15 can be displaced radially outward in a manner not shown when the tool shaft 11 is inserted into the receiving bore 13 and, for the axial locking of the tool 10, snaps resiliently into an axially extending locking trough 16 incorporated in the tool shaft 11 by means of a locking sleeve.
- the cylindrical locking body 15 is rounded at its axial ends.
- the locking trough 16 is designed as a groove and already ends in front of the rear end of the tool shank 11 with a corresponding spherical curvature.
- two rotary drivers are arranged in the opposite areas, one rotary driver consisting of a narrow trapezoidal rotary driver groove 17 running axially to the shaft end in the tool shaft 11 and a co-operating, axially extending rotary driver bar 18 in the receiving bore 13 of the tool holder.
- the second rotary driver in the opposite region is formed from a wider rotary driver groove 19 in the tool shank 11 and a correspondingly wider rotary driver bar 20 of the tool holder 10 which engages therein.
- a third rotary drive is located in the area opposite the axial lock.
- This rotary drive is designed such that there the tool shank 11 has a chord-shaped recess 21 (flattening or section) which runs axially to the shank end and the tool holder 10 has an axially extending chord-shaped projection 22 in the corresponding circumferential region of the receiving bore 13.
- This rotary driver does not have a radial flank for torque transmission like the other two rotary drivers, but a much larger area through the chord-shaped outlet to the circumference of the tool shank 11 and to the receiving bore 13 of the tool holder 10. This results in the surface pressure in this area and, as a result, the wear reduces, which has a positive effect in particular on the radial rotary driving flanks of the other two rotary drivers.
- the rear flank of this rotary drive runs like a chord to the circumference of the tool shank 11 or to the receiving bore 13 of the tool holder 10 in order to absorb dangerous left-hand rotary impulses, in particular when chiseling work with a fixed tool holder.
- the two mutually opposite rotary drivers which operate from the rotary driver grooves 17 and 19 and the rotary driver bars 187 and 20, are tendon-shaped on their areas facing away from the rotary driver surfaces to the circumference of the tool shaft 11 or to the receiving bore 13 tapered.
- the rotational driving flank 21a, 22a of the third rotational driving 21, 22 is here perpendicularly below the axial lock 15, 16.
- a wider axial locking with the locking body 15a and the cooperating locking trough 16a in the tool shank 11 is shown, this axial locking being offset on the circumference in the direction of the narrower rotary drive.
- the third rotary driver opposite the axial lock is designed there in such a way that its torque-transmitting flank 21a forms an angle of at least 90 ° with the section 21b tapering to the circumference of the tool shank 11.
- This third rotary driver is also offset in the direction of the narrower rotary driver 17, 18 in the circumferential direction, in order to make one possible to get uniform stress on the tool shank 11.
- the two opposite, different width rotary drivers are arranged interchanged.
- Exemplary embodiments are limited, since in particular the number and the shape of individual rotary drivers that are not opposite the axial locking can be freely selected.
- the chord-shaped rotary driver in the area opposite the axial locking can also be used to improve the compatibility between the tool shank and the tool holder, for example by the tool shaver 11 in the exemplary embodiment according to FIG. 1 being inserted into a tool holder with a third on the rotary driver bar 22c indicated in dashed lines in FIG Projection 22 or in a tool holder 10 according to Figure 5 is used.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
- Automatic Tool Replacement In Machine Tools (AREA)
- Drilling And Boring (AREA)
- Gripping On Spindles (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Earth Drilling (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Toys (AREA)
- Manipulator (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4400969A DE4400969A1 (de) | 1994-01-14 | 1994-01-14 | Einrichtung an Handwerkzeugmaschinen zur Drehmitnahme von Werkzeugen |
DE4400969 | 1994-01-14 | ||
PCT/DE1994/001534 WO1995019243A1 (de) | 1994-01-14 | 1994-12-24 | Einrichtung an handwerkzeugmaschinen zur drehmitnahme von werkzeugen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0739266A1 true EP0739266A1 (de) | 1996-10-30 |
EP0739266B1 EP0739266B1 (de) | 1999-10-06 |
Family
ID=6507946
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95903257A Expired - Lifetime EP0739266B1 (de) | 1994-01-14 | 1994-12-24 | Einrichtung an handwerkzeugmaschinen zur drehmitnahme von werkzeugen |
Country Status (19)
Country | Link |
---|---|
US (1) | US5868209A (de) |
EP (1) | EP0739266B1 (de) |
JP (1) | JPH09507437A (de) |
KR (1) | KR100402191B1 (de) |
CN (1) | CN1069569C (de) |
AT (1) | ATE185307T1 (de) |
AU (1) | AU677490B2 (de) |
BR (1) | BR9408484A (de) |
CA (1) | CA2181181C (de) |
CZ (1) | CZ287627B6 (de) |
DE (2) | DE4400969A1 (de) |
DK (1) | DK0739266T3 (de) |
ES (1) | ES2138184T3 (de) |
FI (1) | FI107318B (de) |
RU (1) | RU2141395C1 (de) |
SK (1) | SK283414B6 (de) |
TW (1) | TW252067B (de) |
WO (1) | WO1995019243A1 (de) |
ZA (1) | ZA95274B (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CZ287520B6 (en) * | 1994-01-14 | 2000-12-13 | Bosch Gmbh Robert | Mechanism of hand-held cutting device for rotary driving of impact and/or drilling tools, a tool and a tool holder |
AUPP053097A0 (en) * | 1997-11-26 | 1997-12-18 | Ramset Fasteners (Aust.) Pty. Limited | Drill bits and holders therefor |
AU742424B2 (en) * | 1997-11-26 | 2002-01-03 | Illinois Tool Works Inc. | Drill bits and holders therefor |
US6688610B2 (en) * | 2000-05-12 | 2004-02-10 | Power Tool Holders Incorporated | Chuck with quick change |
US6533291B2 (en) | 2001-02-14 | 2003-03-18 | Power Tool Holders Incorporated | Chuck having quick change mechanism |
US6834864B2 (en) * | 2001-10-24 | 2004-12-28 | Power Tool Holders Incorporated | Chuck having quick change mechanism |
DE20204416U1 (de) * | 2002-03-19 | 2002-07-11 | Heller Dinklage Gmbh Geb | Werkzeug für eine Handwerkzeugmaschine |
DE102004026850A1 (de) * | 2004-06-02 | 2005-12-29 | Hilti Ag | Einsteckende für ein drehendes und/oder schlagendes Werkzeug |
DE102004054685A1 (de) * | 2004-11-12 | 2006-05-18 | Hilti Ag | Werkzeugaufnahme |
JP6078230B2 (ja) | 2009-03-02 | 2017-02-08 | セブンス センス バイオシステムズ,インコーポレーテッド | 血液サンプリングに関連する技術および装置 |
IL200980A0 (en) * | 2009-09-16 | 2010-05-17 | Iscar Ltd | Cutting tool and holder |
US8668411B2 (en) * | 2009-09-16 | 2014-03-11 | Iscar, Ltd. | Cutting tool and holder |
CN107225273A (zh) * | 2016-03-23 | 2017-10-03 | 江苏天工工具有限公司 | 一种防断裂高速钢直柄麻花钻 |
CN106112847B (zh) * | 2016-06-24 | 2018-03-06 | 相城区黄桥荣翔金属制品厂 | 一种定位工装 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2811677A1 (de) * | 1978-03-17 | 1979-09-20 | Westa Werkzeugbau | Einrichtung zur aufnahme eines gesteinsbohrers im bohrfutter einer drehschlagbohrmaschine |
GB8425400D0 (en) * | 1984-10-08 | 1984-11-14 | Dom Holdings Plc | Tool |
DE3745046C2 (de) * | 1987-05-20 | 1996-07-25 | Bosch Gmbh Robert | Werkzeugaufnahme einer Handwerkzeugmaschine mit verdrehsicher einsetzbarem Werkzeug |
DE3941646A1 (de) * | 1989-12-16 | 1991-06-20 | Heller Werkzeug Gmbh Geb | Werkzeug zum schlagbohren und werkzeugaufnahme fuer schlagbohrende werkzeuge |
EP0553124B1 (de) * | 1990-10-16 | 1996-05-29 | Robert Bosch Gmbh | Einrichtung an handwerkzeugmaschinen |
DE4141846A1 (de) * | 1991-12-18 | 1993-06-24 | Hilti Ag | Werkzeug zum schlagbohren und meisseln und werkzeugaufnahme fuer diese werkzeuge |
DE4200643A1 (de) * | 1992-01-13 | 1993-07-15 | Hilti Ag | Werkzeug zum schlagbohren und meisseln und werkzeugaufnahme fuer diese werkzeuge |
DE4211533A1 (de) * | 1992-04-06 | 1993-10-07 | Hilti Ag | Werkzeug und Werkzeugaufnahme für Handwerkzeuggeräte |
DE4242452A1 (de) * | 1992-07-15 | 1994-01-20 | Hilti Ag | Werkzeug und Werkzeugaufnahme für Handwerkzeuggeräte |
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 |
DE4341970A1 (de) * | 1993-12-09 | 1995-06-14 | Hilti Ag | Werkzeug und Werkzeugaufnahme für Handwerkzeuggeräte |
CZ287520B6 (en) * | 1994-01-14 | 2000-12-13 | Bosch Gmbh Robert | Mechanism of hand-held cutting device for rotary driving of impact and/or drilling tools, a tool and a tool holder |
-
1994
- 1994-01-14 DE DE4400969A patent/DE4400969A1/de not_active Withdrawn
- 1994-11-19 TW TW083110769A patent/TW252067B/zh active
- 1994-12-24 ES ES95903257T patent/ES2138184T3/es not_active Expired - Lifetime
- 1994-12-24 BR BR9408484A patent/BR9408484A/pt not_active IP Right Cessation
- 1994-12-24 AU AU12187/95A patent/AU677490B2/en not_active Ceased
- 1994-12-24 SK SK898-96A patent/SK283414B6/sk unknown
- 1994-12-24 JP JP7518760A patent/JPH09507437A/ja active Pending
- 1994-12-24 WO PCT/DE1994/001534 patent/WO1995019243A1/de active IP Right Grant
- 1994-12-24 RU RU96116844A patent/RU2141395C1/ru not_active IP Right Cessation
- 1994-12-24 CA CA002181181A patent/CA2181181C/en not_active Expired - Fee Related
- 1994-12-24 US US08/669,343 patent/US5868209A/en not_active Expired - Fee Related
- 1994-12-24 AT AT95903257T patent/ATE185307T1/de not_active IP Right Cessation
- 1994-12-24 CZ CZ19962007A patent/CZ287627B6/cs not_active IP Right Cessation
- 1994-12-24 KR KR1019960703759A patent/KR100402191B1/ko not_active IP Right Cessation
- 1994-12-24 CN CN94194824A patent/CN1069569C/zh not_active Expired - Fee Related
- 1994-12-24 DK DK95903257T patent/DK0739266T3/da active
- 1994-12-24 EP EP95903257A patent/EP0739266B1/de not_active Expired - Lifetime
- 1994-12-24 DE DE59408808T patent/DE59408808D1/de not_active Expired - Fee Related
-
1995
- 1995-01-13 ZA ZA95274A patent/ZA95274B/xx unknown
-
1996
- 1996-07-12 FI FI962842A patent/FI107318B/fi not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9519243A1 * |
Also Published As
Publication number | Publication date |
---|---|
CZ287627B6 (en) | 2001-01-17 |
CN1141607A (zh) | 1997-01-29 |
DE59408808D1 (de) | 1999-11-11 |
ZA95274B (en) | 1995-09-21 |
KR100402191B1 (ko) | 2004-03-26 |
US5868209A (en) | 1999-02-09 |
TW252067B (de) | 1995-07-21 |
ES2138184T3 (es) | 2000-01-01 |
DE4400969A1 (de) | 1995-07-20 |
CN1069569C (zh) | 2001-08-15 |
SK89896A3 (en) | 1997-09-10 |
CA2181181C (en) | 2000-10-03 |
DK0739266T3 (da) | 2000-04-03 |
EP0739266B1 (de) | 1999-10-06 |
FI962842A0 (fi) | 1996-07-12 |
FI962842A (fi) | 1996-07-12 |
CZ200796A3 (en) | 1997-02-12 |
BR9408484A (pt) | 1997-08-26 |
ATE185307T1 (de) | 1999-10-15 |
AU1218795A (en) | 1995-08-01 |
JPH09507437A (ja) | 1997-07-29 |
WO1995019243A1 (de) | 1995-07-20 |
CA2181181A1 (en) | 1995-07-20 |
AU677490B2 (en) | 1997-04-24 |
RU2141395C1 (ru) | 1999-11-20 |
SK283414B6 (sk) | 2003-07-01 |
FI107318B (fi) | 2001-07-13 |
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