EP0483703A1 - Mandrin pour inserts d'outil, en particulier pour lames de tournevis - Google Patents

Mandrin pour inserts d'outil, en particulier pour lames de tournevis Download PDF

Info

Publication number
EP0483703A1
EP0483703A1 EP91118289A EP91118289A EP0483703A1 EP 0483703 A1 EP0483703 A1 EP 0483703A1 EP 91118289 A EP91118289 A EP 91118289A EP 91118289 A EP91118289 A EP 91118289A EP 0483703 A1 EP0483703 A1 EP 0483703A1
Authority
EP
European Patent Office
Prior art keywords
base body
chuck
receptacle
locking plate
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.)
Granted
Application number
EP91118289A
Other languages
German (de)
English (en)
Other versions
EP0483703B1 (fr
Inventor
Wilfried Eimer
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.)
Willi Hahn GmbH and Co KG
Original Assignee
Willi Hahn GmbH and Co KG
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
Application filed by Willi Hahn GmbH and Co KG filed Critical Willi Hahn GmbH and Co KG
Publication of EP0483703A1 publication Critical patent/EP0483703A1/fr
Application granted granted Critical
Publication of EP0483703B1 publication Critical patent/EP0483703B1/fr
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
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/0007—Connections or joints between tool parts
    • B25B23/0035—Connection means between socket or screwdriver bit and tool
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S279/00—Chucks or sockets
    • Y10S279/904—Quick change 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
    • Y10T279/17863—Shouldered-tang holding
    • Y10T279/17871—Cap
    • 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
    • Y10T279/23—Chucks or sockets with magnetic or electrostatic means

Definitions

  • the invention relates to a chuck for tool inserts according to the preamble of claim 1.
  • a chuck for tool inserts, in particular screwdriver bits, of this type is described in DE 38 29 331 A1.
  • the tool insert used is held in a force-fitting manner by means of a self-locking ball, in that the ball is clamped between one of the six surfaces of the shaft of the tool insert inserted into the chuck and the narrowing wall surface of a union sleeve which is displaceable in the axial direction.
  • the ball To remove the tool insert (bits), the ball must be relieved by moving the sleeve.
  • a disadvantage of chucks of this type is the use of a displaceable and clamping ball in the chuck, which requires a complex construction for the ball guide and the function of which can be impaired by impurities (such as foreign bodies) entering the chuck.
  • the tool insert With these chucks, the tool insert is held by the spring action of the spring ring.
  • a high spring force of the spring ring prevents the tool insert from being replaced, while a weak spring force means that the tool insert is not reliably held. Fatigue of the spring washer also leads to an unreliable fastening of the tool insert.
  • the invention has for its object to provide a chuck of the type mentioned above, which has a high operational reliability, is easy to use and is structurally simple.
  • the locking of the tool insert is effected with a locking plate which is inserted in a union sleeve, whereby the sleeve is rotatably arranged about the axial axis of the chuck.
  • a breakthrough of the locking plate with the cross-sectional profile of the chuck receptacle coincides, so that the tool insert can be freely inserted into or pulled out of the receptacle. If the sleeve is rotated into a locking position, the locking plate engages in the locking groove of the shaft, for. B.
  • the axial dimension of the chuck according to the invention is shorter than in the known chucks with axially displaceable elements, which makes it advantageously possible to shape the free end of the screwdriver bits longer.
  • the chuck has a clamping pin 2 on which a sleeve-shaped base body 4 is fastened (see FIG. 2).
  • a stop 6 is used in the base body 4, which serves to limit the insertion depth of the tool inserts.
  • This stop 6 can advantageously also consist of a magnet which is used to use the tool inserts, e.g. B. screwdriver bits to exert a magnetic force on the screw.
  • the base body 4 has a hexagon receptacle 8, the cross-sectional profile of which corresponds to the cross section of the hexagonal shaft 10 or 30 of a screwdriver bit 11 or 28.
  • a sleeve 12 is rotatably seated on the base body 4, which extends beyond the base body 4 at both ends.
  • the coupling sleeve 12 engages over the clamping pin-side end of the base body 4 inwards up to the outer circumference of the clamping shaft 2.
  • a locking plate 14 rests on the insertion-side end face of the base body 4 and sits firmly in the coupling sleeve 12.
  • the locking plate 14 has a circular central opening 15, the inner circle diameter of which corresponds to the diameter of the locking groove 26 of the hexagonal shaft 10 of standardized tool inserts (DIN 3126 Form C).
  • the opening 15 is widened beyond its circular inner circumference by six substantially triangularly shaped, equidistantly arranged recesses 17 which correspond in profile to the hexagonal corners of the shank 10 and 30 of the tool insert.
  • a helical spring 16 is seated on the clamping shaft 2 between the ends of the base body 4 and the coupling sleeve 12 4 or the cap sleeve 12 are recessed.
  • the angle of rotation between the base body 4 and the union sleeve 12 is limited by a radial pin 22 inserted into the base body 4, which engages in a slot 24 running in the union sleeve 12 in the circumferential direction (see FIG. 1).
  • the torsional tension of the helical spring 16 holds the pin 22 at an abutment end of the slot 24. In this locking position, the triangular recesses 17 of the locking plate 14 do not coincide with the profile corners of the hexagon receptacle 8 of the base body 4.
  • the base body 4 and the sleeve 12 can against the spring tension over the length of the slot 24 against each other manually into the other stop position of Pin 22 and slot 24 are rotated. In this release position, the recesses 17 of the locking plate 14 come to coincide with the profile corners of the hexagon receptacle 8.
  • tool inserts 11, z. B. screwdriver bits that have a locking groove 26 according to DIN 3126-C (Fig. 2).
  • Tool inserts 28 can also be used, the shank 30 of which is rounded from the active side to the area of such a locking groove 26 (FIG. 3).
  • the sleeve 12 on the base body 4 is rotated against the spring action of the coil spring 16 in the release position (Fig. 4a), in which the breakthrough profile 36 of the locking plate 14 with the cross-sectional profile of the hexagon receptacle 8 for Cover comes and the shaft 10 or 30 can be inserted through the locking plate 14 into the base body 4.
  • the screwdriver bit 11 inserted into the hexagon receptacle 8 is then held in a form-fitting manner by the locking plate 14 snapping back by means of the spring force into the locking position (FIG. 4b), which engages in the locking groove 26 in the case of tool inserts 28 in which the shaft is rounded axially to the locking groove , Is the locking plate 14 on the rounded effective end 34 of the shaft 30.
  • the coupling sleeve 12 is rotated counter to the spring force until, in the release position (FIG. 4a), the breakthrough profile 36 of the locking plate 14 is made to coincide with the profile of the hexagon socket 8 of the base body 4.
  • the tool insert 11 or 28 is then easily removable.
  • a slight inclination of the slot 24 against the plane perpendicular to the axis causes on the one hand that the locking plate 14 lifts off the end face of the base body 4 during rotation into the release position and the rotation is not impeded by friction.
  • the tool insert 11 or 28 is also relieved in this way.
  • the tool insert 11 or 28 is pressed slightly axially into the hexagon receptacle 8 by the locking plate 14 (in particular in the embodiment of FIG. 3) and axially fixed to the stop 6.
  • the outer surface of the sleeve 12 is shaped as a corrugated handle 38 so that the sleeve 12 can be easily rotated against the base body 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Gripping On Spindles (AREA)
EP91118289A 1990-10-31 1991-10-26 Mandrin pour inserts d'outil, en particulier pour lames de tournevis Expired - Lifetime EP0483703B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9014997U DE9014997U1 (de) 1990-10-31 1990-10-31 Spannfutter für Werkzeugeinsätze, insbesondere Schraubendreherbits
DE9014997U 1990-10-31

Publications (2)

Publication Number Publication Date
EP0483703A1 true EP0483703A1 (fr) 1992-05-06
EP0483703B1 EP0483703B1 (fr) 1995-05-03

Family

ID=6858903

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91118289A Expired - Lifetime EP0483703B1 (fr) 1990-10-31 1991-10-26 Mandrin pour inserts d'outil, en particulier pour lames de tournevis

Country Status (4)

Country Link
US (1) US5195761A (fr)
EP (1) EP0483703B1 (fr)
DE (2) DE9014997U1 (fr)
ES (1) ES2075298T3 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1006035A5 (fr) * 1992-02-21 1994-04-26 Super Ego Tools Dispositif pour fixer les tetes de filetage dans les machines a fileter.
FR2714322A1 (fr) * 1993-12-24 1995-06-30 Facom Accouplement à blocage axial temporaire par jonc commandé, et outil comprenant un tel dispositif.
ES2100770A2 (es) * 1991-11-22 1997-06-16 Super Ego Tools Perfeccionamientos inroducidos en el objeto de la patente principal n{9102608 por sistema para sujetar cabezas de roscar en roscadoras.
DE19610213A1 (de) * 1996-03-15 1997-09-18 Schmidt Ulrich Ush Schraubwerk Spannfutter mit Bogenstück
EP0627973B1 (fr) * 1992-12-03 1999-01-20 LEONHARD, Hans Piece intermediaire de liaison et de rallonge de cles a vis
DE10061461A1 (de) * 2000-12-08 2002-06-20 Heinz Oelpmann Bithalter
WO2019063504A1 (fr) * 2017-09-29 2019-04-04 Wolfcraft Gmbh Foret aléseur muni d'une butée de profondeur
DE102019124557A1 (de) * 2019-09-12 2021-04-01 Schunk Gmbh & Co. Kg Spann- Und Greiftechnik Bithalter

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2061648C (fr) * 1992-02-21 1994-12-13 Albert Koehler Tournevis
DE4336376C2 (de) * 1992-10-24 1997-08-07 Schmidt Ulrich Ush Schraubwerk Spannfutter für Werkzeug-Einsatzstücke
US5791364A (en) * 1993-12-30 1998-08-11 Custom Service Laboratories Of N.J., Inc. Attachment for stopper for plastic gas pipelines
US5779404A (en) * 1994-05-02 1998-07-14 Jore; Matthew B. Reversible drill/driver tool
US5470180A (en) * 1994-05-02 1995-11-28 Jore; Matthew B. Reversible drill/driver tool
US5842394A (en) * 1997-06-10 1998-12-01 Hwang; Shyan-Duu Multiple bit screwdriver
DE19923006C2 (de) * 1998-12-19 2001-02-22 Holland Letz Felo Werkzeug Spannfutter für auswechselbare Werkzeugeinsätze
WO2000037220A1 (fr) * 1998-12-19 2000-06-29 Felo-Werkzeugfabrik Holland-Letz Gmbh Mandrin de serrage destine a des plaquettes amovibles
US6520509B1 (en) * 1999-08-13 2003-02-18 Maxtech Manufacturing Inc. Screw guide device with drill bit/screw bit and counter sink/drill stop means
US6684740B2 (en) * 2002-04-26 2004-02-03 Ching Chou Lin Magnetic device for retaining tool members to drivers
US6986517B2 (en) * 2003-10-24 2006-01-17 Lin Peng-Ho Coupling tube for a screwdriver head
US20050116429A1 (en) * 2003-12-01 2005-06-02 Sheng-Ming Chang Fast and convenient operation structure of a screwdriver head socket
US20060100024A1 (en) * 2004-11-05 2006-05-11 Ming-Ta Cheng Transmission shaft for a hand tool or a power tool
DE102005017872A1 (de) * 2005-04-19 2006-10-26 Wera-Werk Hermann Werner Gmbh & Co. Kg Futter mit einem einstellbaren Tiefenanschlag
TW200831243A (en) * 2007-01-19 2008-08-01 Hou-Fei Hu Screwdriver joint with stepless locking
US8992113B2 (en) * 2009-06-08 2015-03-31 Re2, Inc. Robust manual connector for robotic arm end effector
US8382177B2 (en) * 2009-06-11 2013-02-26 Re2, Inc. Quick-change finger for robotic gripper
US10076844B2 (en) 2009-08-10 2018-09-18 Re2, Inc. Automated tool change assembly for robotic arm
US8708346B2 (en) 2010-01-08 2014-04-29 Techtronic Power Tools Technology Limited Rotary tool including a collet
DE202015100137U1 (de) 2015-01-14 2015-03-26 Good Year Hardware Co., Ltd. Halterung für Werkzeugeinsätze
TWI554367B (zh) * 2015-12-18 2016-10-21 陳河田 具快脫反轉結構之起子頭接桿

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1758069A (en) * 1928-01-25 1930-05-13 Greenlee Bros & Co Bit extension
US2592978A (en) * 1949-10-05 1952-04-15 Frank A Trimboli Retractable tool
DE3829331A1 (de) * 1988-08-30 1990-03-08 Holland Letz Felo Werkzeug Spannfutter fuer werkzeugeinsaetze, insbesondere schraubendreherbits

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1203853A (en) * 1914-02-26 1916-11-07 Albert T Otto & Sons Extensible tool.
US1418184A (en) * 1920-08-12 1922-05-30 Trunick Charles Screw driver
US1413101A (en) * 1920-08-27 1922-04-18 Samuel J Cushing Tool holder
US2550775A (en) * 1949-07-13 1951-05-01 Wade Stevenson Magnetic screw driver
DE915080C (de) * 1951-11-13 1954-07-15 Bosch Gmbh Robert Schraubenzieherklinge
DE1030268B (de) * 1952-08-28 1958-05-14 Chicago Pneumatic Tool Co Vorrichtung zum Festhalten einer Werkzeugsteckhuelse auf einem drehangetriebenen Werkzeugschaft
DE924436C (de) * 1953-08-19 1955-03-03 Werkzeugfabrik Walter Finkelde Schraubenzieher
US3672692A (en) * 1970-05-18 1972-06-27 Bilz Otto Werkzeug Quick-change chucks
DE3314232A1 (de) * 1983-04-20 1984-10-25 Eugen Fahrion Gmbh & Co, 7300 Esslingen Vorrichtung zum wechseln eines werkzeuges, insbesondere fraeswerkzeuges
IT1176371B (it) * 1984-06-29 1987-08-18 Innocenti Santeustacchio Spa Giunto per il collegamento testa a testa di tubi metallici,in particolare per palificazioni marine
DE8521439U1 (de) * 1985-07-25 1986-01-23 Metabowerke GmbH & Co, 7440 Nürtingen Handbohrmaschine mit Fixiervorrichtung für Einsatzwerkzeuge
CA1214953A (fr) * 1985-08-16 1986-12-09 Archibald M. Mckenzie Tournevis a jeu de lames et prises interchangeables
DE3538675A1 (de) * 1985-10-31 1987-05-07 Werner Hermann Wera Werke Schraubendrehereinsatz
DE3730638A1 (de) * 1987-06-25 1989-01-05 Tapmatic International Corp Gewindebohrer- und schnellwechsel-gewindebohrfutteranordnung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1758069A (en) * 1928-01-25 1930-05-13 Greenlee Bros & Co Bit extension
US2592978A (en) * 1949-10-05 1952-04-15 Frank A Trimboli Retractable tool
DE3829331A1 (de) * 1988-08-30 1990-03-08 Holland Letz Felo Werkzeug Spannfutter fuer werkzeugeinsaetze, insbesondere schraubendreherbits

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2100770A2 (es) * 1991-11-22 1997-06-16 Super Ego Tools Perfeccionamientos inroducidos en el objeto de la patente principal n{9102608 por sistema para sujetar cabezas de roscar en roscadoras.
BE1006035A5 (fr) * 1992-02-21 1994-04-26 Super Ego Tools Dispositif pour fixer les tetes de filetage dans les machines a fileter.
EP0627973B1 (fr) * 1992-12-03 1999-01-20 LEONHARD, Hans Piece intermediaire de liaison et de rallonge de cles a vis
FR2714322A1 (fr) * 1993-12-24 1995-06-30 Facom Accouplement à blocage axial temporaire par jonc commandé, et outil comprenant un tel dispositif.
DE19610213A1 (de) * 1996-03-15 1997-09-18 Schmidt Ulrich Ush Schraubwerk Spannfutter mit Bogenstück
DE19610213C2 (de) * 1996-03-15 1998-11-19 Schmidt Ulrich Ush Schraubwerk Spannfutter mit Bogenstück
DE10061461A1 (de) * 2000-12-08 2002-06-20 Heinz Oelpmann Bithalter
DE10061461B4 (de) * 2000-12-08 2010-07-15 Heinz Oelpmann Bithalter
WO2019063504A1 (fr) * 2017-09-29 2019-04-04 Wolfcraft Gmbh Foret aléseur muni d'une butée de profondeur
DE102019124557A1 (de) * 2019-09-12 2021-04-01 Schunk Gmbh & Co. Kg Spann- Und Greiftechnik Bithalter

Also Published As

Publication number Publication date
DE59105379D1 (de) 1995-06-08
DE9014997U1 (de) 1992-03-19
US5195761A (en) 1993-03-23
EP0483703B1 (fr) 1995-05-03
ES2075298T3 (es) 1995-10-01

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