EP0999921B1 - Mandrin de serrage comportant une piece cintree - Google Patents

Mandrin de serrage comportant une piece cintree Download PDF

Info

Publication number
EP0999921B1
EP0999921B1 EP97936598A EP97936598A EP0999921B1 EP 0999921 B1 EP0999921 B1 EP 0999921B1 EP 97936598 A EP97936598 A EP 97936598A EP 97936598 A EP97936598 A EP 97936598A EP 0999921 B1 EP0999921 B1 EP 0999921B1
Authority
EP
European Patent Office
Prior art keywords
bushing
shaft end
chuck according
clamping chuck
curved piece
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
EP97936598A
Other languages
German (de)
English (en)
Other versions
EP0999921A1 (fr
Inventor
Ulrich Schmidt
Hans Albert VÖLKEL
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.)
Ush Schraubwerkzeugfabrik Ulrich Schmidtgmbh & Co Kg
Original Assignee
Ush Schraubwerkzeugfabrik Ulrich Schmidtgmbh & 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 Ush Schraubwerkzeugfabrik Ulrich Schmidtgmbh & Co Kg filed Critical Ush Schraubwerkzeugfabrik Ulrich Schmidtgmbh & Co Kg
Publication of EP0999921A1 publication Critical patent/EP0999921A1/fr
Application granted granted Critical
Publication of EP0999921B1 publication Critical patent/EP0999921B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B25B15/00—Screwdrivers
    • B25B15/001—Screwdrivers characterised by material or shape of the tool bit
    • 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

Definitions

  • the invention relates to a chuck for shaft ends of Tool bits, especially hexagon screwdriver bits with corner cut-outs on the shaft or all around Engagement grooves, with a receiving the shaft end Bushing, the inner cross section of which is the cross section of the shaft end corresponds and at least one to the shaft end by the movement of a sleeve seated on the socket, limited movable locking device that in one Wall opening of the socket is arranged, the sleeve movable in the longitudinal and / or circumferential direction of the socket and with at least one clamping surface against the locking member Action on the shaft end can be applied.
  • Such chucks are for example from DE 29 34 428, DE-PS 32 43 389, DE-PS 33 30 486, the EP 0 462 257, DE-OS 42 43 650 or DE-OS 43 36 376.
  • a locking device is used in one Wall bore of the socket seated ball used by the system against the clamping surface of the sleeve against the shaft end the screwdriver bit on the surface or a corner presses and this against an unintentional Falling locked out of the chuck.
  • the wall hole in the socket must be very precise be carried out, because on the inner wall of the socket shoulders must stop, the ball falling out into the Prevent the inside of the socket when the shaft end is not inserted. Problems can already arise in this context come when the drilling tool used is different Operating temperatures or wear. In the Practice is therefore in the manufacture of such chucks to expect an increased committee.
  • a chuck according to the preamble of claim 1 is for Example known from DE-U-9 403 686.
  • the invention has for its object a generic To create a chuck where the use of balls as a locking member acting on the shaft end can be.
  • the socket transverse to its longitudinal direction to the desired one Saw depth, whereby here the manufacturing tolerances without adverse effects on the functioning many times over can be larger.
  • the width of the wall slot becomes determined by the choice of an appropriate saw blade, the slot width being slightly larger than the maximum Width of the bow piece is.
  • the bow piece used is in terms of its curvature and its Dimensions designed so that it with its ends End faces without bit inserted into the socket on the Cut surfaces of the wall slot rests and its outer Circumference slightly below the outer circumference of the socket comes to lie.
  • the elbow is pressed in the radial direction to the outside, where it is then through the Movement of the sleeve is applied against the clamping surface the bow piece in turn against the shaft or its corner recesses or presses engagement grooves and locks them.
  • the chuck Sleeve in the longitudinal direction of the bush against the force of a coil spring movable.
  • the inner diameter of the sleeve has one the conical taper forming the clamping surface under the action of the spring force automatically against the bow piece sets. This is a final locking of the used Bits only possible through a deliberate shift of the sleeve.
  • Chucks can totally depend on the use of a spring to be dispensed with.
  • the sleeve is in the circumferential direction the socket is rotatable and has an eccentric cross-sectional widening their inner cross-section. Through a this cross-sectional widening comes about by correspondingly turning the sleeve to lie over the arch piece so that it retreat can and an insertion or removal of the bit is possible.
  • the arc piece can be made part-circular be so that it is inexpensive made of spring steel Tension rings can be made and a circular Has cross section.
  • the chucks according to the invention are extremely durable because the bow piece used can deform elastically and there is practically no wear.
  • the manufacturing tolerances too with regard to the clamping surface to be trained are in contrast essential to chucks with balls as thrust pieces easier to adhere to.
  • the bend is preferably in two-point system the prism-like surfaces of the corner recesses of the shaft end in a C version of the bit. Since the length of the arch piece or the wall slot is preferred is chosen so that the arch piece at least two Overlapping edges of the shaft end results in an excellent Locking and centering effect in the socket.
  • the elbow is included an E version in a line or area system on the rotating one Engaging groove of the shaft end.
  • the chuck according to the invention can therefore be used for all commercially available Bits, of course also for those without an engagement groove or corner cutouts.
  • the socket also has the definition of the height of the Shaft end preferably an inner permanent magnet, whose magnetic force is transferred to the screw head via the bit transmits, which then no longer drops from the bit in the loose state.
  • the chuck according to the invention can also be used for tool applications can be used as z. B. from German Utility model 295 01 859.3 are known.
  • the inner recording 6 the cross-sectional area of the socket 2 corresponds to the cross-section of the shaft 3, which is designed as a hexagon.
  • the bow piece 9 has a circular cross section and is with respect to its arc length or curvature chosen so that it If the screwdriver bit 4 is not inserted, do not insert it into the holder 6 of the socket 2 can fall.
  • the compression spring 12 is arranged in a circumferential spring groove 13, by an upper shoulder 14 and a lower one. Shoulder 15 is limited.
  • the z. B. is designed as a 0-ring or snap ring, the Sleeve 5 additionally secured.
  • FIG. 2 illustrates like the bow piece 9 under the action of the clamping surface 11 in the corner recesses of the shaft end 3 of the screwdriver bit 4 engages.
  • the bow piece 9 has with respect to the shaft end 3 in the illustrated Position has a locking effect since it is in two engages adjacent corner recesses of the shaft end 3.
  • a spring can be dispensed with.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)

Claims (12)

  1. Mandrin de serrage pour des extrémités de tige de pièces intercalaires d'outils, en particulier d'embouts tournevis hexagonaux présentant des creux angulaires situés côté tige ou des rainures de contact circulaires, comprenant une douille (2) qui reçoit l'extrémité de tige (3) et dont la section transversale intérieure correspond à la section transversale de ladite extrémité de tige (3), et au moins un organe d'arrêt (9, 22) qui présente une mobilité limitée, qui agit sur l'extrémité de tige (3) grâce au mouvement d'un manchon (5) placé sur la douille (2) et qui est disposé dans une ouverture (8) de la paroi de la douille (2), étant précisé que le manchon (5) est mobile dans le sens longitudinal et/ou circonférenciel de la douille (2) et est apte à être appliqué avec au moins une surface de serrage (11) contre l'organe d'arrêt (9, 22) pour que celui-ci agisse sur l'extrémité de tige (3), et que l'ouverture prévue dans la paroi pour recevoir l'organe d'arrêt est conçue comme une fente (8) transversale par rapport au sens longitudinal de la douille (2, 23),
       caractérisé en ce que l'organe d'arrêt est conçu comme une pièce courbe (9, 22) calée dans la fente (8) de la douille (2, 23).
  2. Mandrin de serrage selon la revendication 1, caractérisé en ce que le manchon (5) présente une mobilité limitée à l'encontre de la force d'un ressort à boudin (12), dans le sens longitudinal de la douille (2), et le diamètre intérieur du manchon (5) va en diminuant suivant une forme conique, sur une zone partielle au moins de son étendue longitudinale, pour former la surface de serrage (11), ladite surface de serrage (11) s'appliquant automatiquement contre la pièce courbe (9) sous l'action de la force du ressort à boudin (12).
  3. Mandrin de serrage selon la revendication 1, caractérisé en ce que le manchon de serrage (20) mobile dans le sens circonférenciel de la douille (23) présente au moins un élargissement excentrique (21) de sa section transversale intérieure, qui permet un recul de la pièce courbe (22).
  4. Mandrin de serrage selon l'une des revendications 1 à 3, caractérisé en ce que la longueur circonférencielle de la fente (8) est supérieure à la longueur d'arc de la pièce courbe (9, 22).
  5. Mandrin de serrage selon l'une des revendications 1 à 4, caractérisé en ce que la longueur d'arc de la pièce courbe (9, 22) est choisie pour que ladite pièce courbe (9, 22) couvre au moins deux bords angulaires de l'extrémité de tige (3).
  6. Mandrin de serrage selon l'une des revendications 1 à 5, caractérisé en ce que la pièce courbe (9, 22) a la forme d'un cercle partiel.
  7. Mandrin de serrage selon l'une des revendications 1 à 6, caractérisé en ce que la pièce courbe (9, 22) se compose d'acier à ressorts.
  8. Mandrin de serrage selon l'une des revendications 1 à 7, caractérisé en ce que la pièce courbe (9, 22) a une section transversale circulaire.
  9. Mandrin de serrage selon l'une des revendications 1 à 8, caractérisé en ce que la pièce courbe (9, 22) est appliquée en deux points contre les surfaces des creux angulaires de l'extrémité de tige (3) qui sont disposées les unes par rapport aux autres comme un prisme.
  10. Mandrin de serrage selon l'une des revendications 1 à 8, caractérisé en ce que la pièce courbe (9, 22) est appliquée linéairement ou superficiellement contre la rainure de contact circulaire de l'extrémité de tige.
  11. Mandrin de serrage selon l'une des revendications 1 à 10, caractérisé en ce qu'il est prévu à l'intérieur de la douille un aimant permanent qui fixe la position en hauteur de la pièce intercalaire d'outil ou de l'extrémité de tige.
  12. Mandrin de serrage selon l'une des revendications 1 à 11, caractérisé en ce que la douille présente un perçage central qui va au-delà du logement (6) prévu pour l'extrémité de tige (3) et dont la section transversale est rétrécie par rapport au logement (6).
EP97936598A 1997-07-31 1997-07-31 Mandrin de serrage comportant une piece cintree Expired - Lifetime EP0999921B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DE1997/001650 WO1999006187A1 (fr) 1997-07-31 1997-07-31 Mandrin de serrage comportant une piece cintree

Publications (2)

Publication Number Publication Date
EP0999921A1 EP0999921A1 (fr) 2000-05-17
EP0999921B1 true EP0999921B1 (fr) 2002-02-20

Family

ID=6918526

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97936598A Expired - Lifetime EP0999921B1 (fr) 1997-07-31 1997-07-31 Mandrin de serrage comportant une piece cintree

Country Status (4)

Country Link
EP (1) EP0999921B1 (fr)
DE (1) DE59706467D1 (fr)
DK (1) DK0999921T3 (fr)
WO (1) WO1999006187A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE50015267D1 (de) * 2000-04-05 2008-08-28 Infineon Technologies Ag Verfahren zur störanteilsfreien Bilderfassung mittels eines elektronischen Sensors
DE102012103678B4 (de) * 2012-04-26 2019-10-10 Wera Werkzeuge Gmbh Futter zur Aufnahme eines Schraubendrehereinsatzes

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4207337C1 (fr) * 1992-03-07 1993-06-09 Helfer & Co Kg, 3260 Rinteln, De
DE4336376C2 (de) * 1992-10-24 1997-08-07 Schmidt Ulrich Ush Schraubwerk Spannfutter für Werkzeug-Einsatzstücke
DE4243650C2 (de) * 1992-12-23 1996-07-25 Schmidt Ulrich Ush Schraubwerk Spannfutter für Werkzeug-Einsatzstücke
DE9403686U1 (de) * 1994-03-04 1994-06-09 Fa. Robert Schröder, 42369 Wuppertal Einsteckhalterung für Werkzeugeinsätze, insbesondere Schraubendreherbits
DE29501859U1 (de) * 1995-02-06 1995-03-23 Ush Schraubwerkzeugfabrik Ulrich Schmidt, 57271 Hilchenbach Drehantreibbarer Werkzeugeinsatz
US5722805A (en) * 1995-12-08 1998-03-03 Giffin; Brian K. Drill bit adaptor tool

Also Published As

Publication number Publication date
EP0999921A1 (fr) 2000-05-17
DK0999921T3 (da) 2002-05-27
DE59706467D1 (de) 2002-03-28
WO1999006187A1 (fr) 1999-02-11

Similar Documents

Publication Publication Date Title
EP0175088B1 (fr) Porte-outil pour outils de perçage et de burinage
EP1513653B1 (fr) Mandrin pour la reception d'outils utilisables par rotation autour de leur axe
DE102011106421B3 (de) Schaftwerkzeug, Werkzeughalterung für ein Schaftwerkzeug sowie Reduzierhülse für eine Werkzeughalterung
DE2732677C3 (de) Spannzange
WO1991010541A1 (fr) Mandrin de serrage pour des extremites polygonales de tiges d'outils
DE19521993A1 (de) Werkzeughalter und Werkzeug für eine Bohr- und/oder Schlagwerkzeugmaschine
EP2188094B1 (fr) Machine-outil avec un porte-outil
EP0622157B1 (fr) Arbre de fixation d'un outil
WO2008049621A2 (fr) Dispositif de serrage et pince de serrage, corps de base et clé de serrage à cet effet
DE4243650A1 (de) Spannfutter für Werkzeug-Einsatzstücke
WO1998047649A1 (fr) Mandrin de serrage pour outils rotatifs
EP0193020B1 (fr) Dispositif d'outillage avec tête interchangeable
DE4405697A1 (de) Werkzeugaufnahme für einen Bohr- und/oder Meißelhammer
EP0742082B1 (fr) Dispositif de transmission de couple pour des outils à main
EP0275441A1 (fr) Dispositif de serrage
EP0563727B1 (fr) Dispositif pour transmettre un moment de rotation
DE19610213C2 (de) Spannfutter mit Bogenstück
DE69215905T2 (de) Spannvorrichtung für fräser oder ähnliche, anpassbar für verschiedene haltergrössen
EP0999921B1 (fr) Mandrin de serrage comportant une piece cintree
DE2322027A1 (de) Werkzeughalter
EP1122032B1 (fr) Mandrin de serrage pour des extrémités de tiges d'outils, en particulier pour lames de tournevis
WO2000037220A1 (fr) Mandrin de serrage destine a des plaquettes amovibles
DE102019134596A1 (de) Rotations-Schneidwerkzeug sowie Werkzeugbaugruppe
EP3141346B1 (fr) Porte-embout a limitation de profondeur
DE2528423A1 (de) Bruchsicherung fuer gewindebohrer

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20000222

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE CH DE DK FR GB IT LI NL

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 20010523

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE CH DE DK FR GB IT LI NL

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59706467

Country of ref document: DE

Date of ref document: 20020328

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: E. BLUM & CO. PATENTANWAELTE

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20020513

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20021121

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Owner name: USH SCHRAUBWERKZEUGFABRIK ULRICH SCHMIDTGMBH & CO

Free format text: USH SCHRAUBWERKZEUGFABRIK ULRICH SCHMIDTGMBH & CO. KG.#STERZENBACHER STRASSE 4#57271 HILCHENBACH (DE) -TRANSFER TO- USH SCHRAUBWERKZEUGFABRIK ULRICH SCHMIDTGMBH & CO. KG.#STERZENBACHER STRASSE 4#57271 HILCHENBACH (DE)

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DK

Payment date: 20080722

Year of fee payment: 12

Ref country code: CH

Payment date: 20080710

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20080731

Year of fee payment: 12

Ref country code: IT

Payment date: 20080722

Year of fee payment: 12

Ref country code: FR

Payment date: 20080731

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20080813

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20080929

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20080704

Year of fee payment: 12

BERE Be: lapsed

Owner name: *USH SCHRAUBWERKZEUGFABRIK ULRICH SCHMIDT G.M.B.H.

Effective date: 20090731

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20090731

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20100201

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20100331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090731

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090731

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100202

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100201