EP0739267B1 - Einrichtung an handwerkzeugmaschinen zur drehmitnahme von werkzeugen - Google Patents

Einrichtung an handwerkzeugmaschinen zur drehmitnahme von werkzeugen Download PDF

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Publication number
EP0739267B1
EP0739267B1 EP95903762A EP95903762A EP0739267B1 EP 0739267 B1 EP0739267 B1 EP 0739267B1 EP 95903762 A EP95903762 A EP 95903762A EP 95903762 A EP95903762 A EP 95903762A EP 0739267 B1 EP0739267 B1 EP 0739267B1
Authority
EP
European Patent Office
Prior art keywords
rotary
tool
opposite
rotary driving
locking
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 - Lifetime
Application number
EP95903762A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0739267A1 (de
Inventor
Horst Wierspecker
Heinz Neubert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE4405958A external-priority patent/DE4405958A1/de
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0739267A1 publication Critical patent/EP0739267A1/de
Application granted granted Critical
Publication of EP0739267B1 publication Critical patent/EP0739267B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B25D2217/0034—Details of shank profiles
    • 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
    • B25D2217/0042—Ball-shaped locking members
    • 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
    • Y10T279/17076—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
    • 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
    • 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 Hand machine tools for turning driving of striking and / or drilling tools according to the preamble of Claim 1, and of a tool used here and tool holder.
  • the arrangement of the rotary driving according to the invention characterizing feature of claim 1 has the advantage that the torque load over the scope of the Tool shank and the tool holder essential is done more evenly by that of the axial lock upstream rotary drive with its torque transmitting Flank now much closer to the less loaded Axial locking was installed. Another advantage is to see that by the more even torque load centering in the recording also improved, one counteracts one-sided wear and the danger of Tool through cutouts between the turning drives is reduced.
  • a special development of the device according to the invention is that the tool shank of the invention trained tool also to such, known per se Tool holders are trained compatible, in which the Rotational driving and axial locking by two each other diametrically opposite, cylindrical Locking body is accomplished (e.g. Hilti rotary hammer TE10).
  • the driving groove which is the axially closed Locking recess is at least partially opposite, with to combine another locking trough so that on the one hand when inserting such a tool shank in a tool holder according to the invention the middle A drive bar for the tool holder picks up, on the other hand when inserting the Tool shank in the aforementioned known tool holder the second locking body in the second, on the axial Ends of the partially locked locking trough interlocks.
  • FIG. 1 shows a cross section through a Device for torque transmission according to the invention a hammer drill with a tool holder and one in it used tool shank
  • Figure 2 is a longitudinal section the front part of the tool holder
  • Figure 3 shows the Cross section through the shank of a tool as another Embodiment
  • Figure 4 shows the shaft end of the Tool
  • Figure 5 shows a third embodiment Cross section through a tool shank with a combined Rotary driving groove and locking trough
  • Figure 6 shows this Tool shank in a known tool holder
  • FIG. 7 shows the tool shank in an inventive Tool holder.
  • the device according to the invention on machine tools Rotary driving of striking and / drilling tools, especially on impact drills and hammer drills or Impact devices essentially consists of a Tool holder 10 as a tool holder and one therein used tool shank 11 one for drilling and / or Hitting the tool used 12.
  • Tool holder 10 in known from WO 88/09245 Way rotatably at the end of a driven hollow cylindrical Tool spindle 13 of a rotary hammer, not shown. in the rear, not shown area of the tool spindle axially movable a striker, which in a known manner from a striking mechanism on the end face of the tool shank 11 is struck.
  • the tool holder 10 has one Location bore 14 for the tool shank 11 and one Opening 15 for a locking body used therein 16, which in a known manner when inserting the Tool shaft 11 radially into the receiving bore 14 is displaceable outside and in the rest position shown by means of spring force from a locking sleeve, not shown is locked in a known manner.
  • the tool 12 is on the tool shaft 11 with two axially mutually opposite, towards the end of the shaft open rotary driving grooves 17 and 18, in which two axially protruding into the receiving bore 14 running rotary driver bars 19, 20 engage.
  • the Driving slots 17 and 18 and their driving bars 19 and 20 are different widths and have both Longitudinally roughly radial flanks. Between the so formed driving is offset by 90 ° in the tool shank 11 an axially extending locking trough 21 attached, in which engages the cylindrical locking body 16.
  • the Locking body is at the front and rear end spherically rounded and in a corresponding manner is the as Groove formed locking trough 21 at least for Spigot end spherically closed, so that Locking body 16 and locking trough 21 a Form axial lock to prevent the tool inadvertently from the tool holder 10 falls out or is pulled out.
  • the Axial locking opposite area of the Tool shaft 11 and the tool holder 10 is one further turning drive available, which also from a to Shaft end open, axially extending rotary driving groove 22 and an axially extending one engaging therein Rotary driving bar 23 in the receiving bore 14 of the Tool holder 10 is formed.
  • This version is especially with regard to a high wear reserve the rotary driving bars 20 and 23a of the tool shank 11a advantageous, whereas in the first embodiment by two narrower turning the through the distance of the grooves 17, 18 and 22 formed wear reserve on tool shank 11 is cheaper.
  • FIG 5 is another embodiment of the Cross section through a tool shank 11b greatly enlarged shown that according to a known tool holder Figure 6 and for a tool holder according to the invention Figure 7 is formed compatible.
  • the top of the Tool shaft 11b lying locking trough 21 is according to Figure 4 axially closed on both sides, so that this already with the locking of a locking body 16 a completely sufficient axial locking takes place.
  • the middle Rotary driving groove 22b which with another Locking recess 21a is superimposed in such a way that the two axial ends of this locking trough 21a only partially are closed; and only to the extent that the front Area 21b of this locking trough 21a over the cross section the driving groove 22b goes out.
  • Figure 7 shows the cross section through an inventive Rotary drive device on machine tools with the compatible tool shank 11b from FIG. 5
  • Tool holder 10 from FIG. 1 is the middle one in FIG Rotary driving bar 23a, which the locking body 16th partially opposite, so offset in the drive direction arranged that their rotational driving flank 29 is now the in Driving edge seen front edge 30 of Locking body 16 is diametrically opposite.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)
  • Drilling And Boring (AREA)
  • Working Measures On Existing Buildindgs (AREA)
  • Drilling Tools (AREA)
EP95903762A 1994-01-14 1994-12-24 Einrichtung an handwerkzeugmaschinen zur drehmitnahme von werkzeugen Expired - Lifetime EP0739267B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE4400970 1994-01-14
DE4400970 1994-01-14
DE4405958 1994-02-24
DE4405958A DE4405958A1 (de) 1994-01-14 1994-02-24 Einrichtung an Handwerkzeugmaschinen zur Drehmitnahme von Werkzeugen
PCT/DE1994/001535 WO1995019244A1 (de) 1994-01-14 1994-12-24 Einrichtung an handwerkzeugmaschinen zur drehmitnahme von werkzeugen

Publications (2)

Publication Number Publication Date
EP0739267A1 EP0739267A1 (de) 1996-10-30
EP0739267B1 true EP0739267B1 (de) 2001-03-14

Family

ID=25933021

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95903762A Expired - Lifetime EP0739267B1 (de) 1994-01-14 1994-12-24 Einrichtung an handwerkzeugmaschinen zur drehmitnahme von werkzeugen

Country Status (16)

Country Link
US (1) US6089798A (da)
EP (1) EP0739267B1 (da)
JP (1) JPH09504236A (da)
CN (1) CN1062206C (da)
AT (1) ATE199672T1 (da)
AU (1) AU681927B2 (da)
BR (1) BR9408483A (da)
CA (1) CA2180542C (da)
CZ (1) CZ287520B6 (da)
DE (1) DE59409686D1 (da)
DK (1) DK0739267T3 (da)
ES (1) ES2155885T3 (da)
FI (1) FI962843A (da)
RU (1) RU2143333C1 (da)
SK (1) SK283037B6 (da)
WO (1) WO1995019244A1 (da)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4400969A1 (de) * 1994-01-14 1995-07-20 Bosch Gmbh Robert Einrichtung an Handwerkzeugmaschinen zur Drehmitnahme von Werkzeugen
CN1105613C (zh) * 1998-07-09 2003-04-16 株式会社家.B.M. 钻头构件,钻头工具及钻头构件的制造方法
DE29813159U1 (de) * 1998-07-23 1998-12-03 Berner Gmbh Werkzeughalter und darin einsetzbares Werkzeug
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
GB2393931A (en) * 2002-10-10 2004-04-14 Black & Decker Inc Tool for a rotary hammer
DE10357380A1 (de) * 2003-12-05 2005-06-30 Hilti Ag Einsteckende für ein drehendes und/oder schlagendes Werkzeug
DE102004054685A1 (de) * 2004-11-12 2006-05-18 Hilti Ag Werkzeugaufnahme
US7491203B2 (en) * 2005-02-14 2009-02-17 Wright Medical Technology, Inc. Instruments for bone screws
DE102013100104B4 (de) 2013-01-08 2022-08-11 Kennametal Inc. Rotations-Schneidwerkzeug und Werkzeugeinheit
US11007631B2 (en) * 2014-01-15 2021-05-18 Milwaukee Electric Tool Corporation Bit retention assembly for rotary hammer
CN109462389A (zh) * 2018-12-13 2019-03-12 上海索迪龙自动化有限公司 一种电感式接近开关传感器

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3745046C2 (de) * 1987-05-20 1996-07-25 Bosch Gmbh Robert Werkzeugaufnahme einer Handwerkzeugmaschine mit verdrehsicher einsetzbarem Werkzeug
DE3824894A1 (de) * 1988-07-22 1990-01-25 Bosch Gmbh Robert Einrichtung an handwerkzeugmaschinen zur drehmomentuebertragung
DE3941646A1 (de) * 1989-12-16 1991-06-20 Heller Werkzeug Gmbh Geb Werkzeug zum schlagbohren und werkzeugaufnahme fuer schlagbohrende werkzeuge
BR9107043A (pt) * 1990-10-16 1993-09-14 Bosch Gmbh Robert Dispositivo em maquinas-ferramenta portateis
DE4105414A1 (de) * 1991-02-21 1992-08-27 Hilti Ag Werkzeug und werkzeughalter fuer handwerkzeuggeraete
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
DE4242452A1 (de) * 1992-07-15 1994-01-20 Hilti Ag Werkzeug und Werkzeugaufnahme für Handwerkzeuggeräte
DE9314416U1 (de) * 1993-09-23 1993-12-09 Plica Werkzeugfabrik Ag Mollis Werkzeugschaft
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
DE4341970A1 (de) * 1993-12-09 1995-06-14 Hilti Ag Werkzeug und Werkzeugaufnahme für Handwerkzeuggeräte
DE4400969A1 (de) * 1994-01-14 1995-07-20 Bosch Gmbh Robert Einrichtung an Handwerkzeugmaschinen zur Drehmitnahme von Werkzeugen
DE4402802C2 (de) * 1994-01-31 2003-01-30 Hilti Ag Werkzeug und Werkzeugaufnahme für Handwerkzeuggeräte
DE4403303A1 (de) * 1994-02-03 1995-08-10 Hilti Ag Werkzeug und Werkzeugaufnahme für Handwerkzeuggeräte

Also Published As

Publication number Publication date
FI962843A0 (fi) 1996-07-12
AU681927B2 (en) 1997-09-11
BR9408483A (pt) 1997-08-26
DK0739267T3 (da) 2001-07-09
FI962843A (fi) 1996-07-12
EP0739267A1 (de) 1996-10-30
CZ287520B6 (en) 2000-12-13
CN1141608A (zh) 1997-01-29
US6089798A (en) 2000-07-18
CZ9602006A3 (en) 1997-02-12
ATE199672T1 (de) 2001-03-15
CA2180542A1 (en) 1995-07-20
DE59409686D1 (de) 2001-04-19
SK283037B6 (sk) 2003-02-04
CN1062206C (zh) 2001-02-21
WO1995019244A1 (de) 1995-07-20
AU1271495A (en) 1995-08-01
RU2143333C1 (ru) 1999-12-27
CA2180542C (en) 2000-08-01
ES2155885T3 (es) 2001-06-01
SK89796A3 (en) 1997-08-06
JPH09504236A (ja) 1997-04-28

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