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WO1990011861A1 - Dispositif d'actionnement d'un mandrin - Google Patents

Dispositif d'actionnement d'un mandrin Download PDF

Info

Publication number
WO1990011861A1
WO1990011861A1 PCT/GB1990/000473 GB9000473W WO9011861A1 WO 1990011861 A1 WO1990011861 A1 WO 1990011861A1 GB 9000473 W GB9000473 W GB 9000473W WO 9011861 A1 WO9011861 A1 WO 9011861A1
Authority
WO
WIPO (PCT)
Prior art keywords
chuck
collar
gear
ring
pin
Prior art date
Application number
PCT/GB1990/000473
Other languages
English (en)
Inventor
Stephen Albert Charlton
Dennis William Donald
Original Assignee
C & D Enterprises Ltd.
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 C & D Enterprises Ltd. filed Critical C & D Enterprises Ltd.
Publication of WO1990011861A1 publication Critical patent/WO1990011861A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
    • B23B45/006—Keys for operating the chucks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
    • B23B31/1207—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving obliquely to the axis of the chuck in a plane containing this axis
    • B23B31/1238—Jaws movement actuated by a nut with conical screw-thread
    • 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
    • B25B33/00—Hand tools not covered by any other group in this subclass
    • B25B33/005—Chuck keys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2231/00—Details of chucks, toolholder shanks or tool shanks
    • B23B2231/38—Keyless chucks for hand tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2260/00—Details of constructional elements
    • B23B2260/078—Hand tools used to operate chucks or to assemble, adjust or disassemble tools or equipment used for turning, boring or drilling

Definitions

  • This invention relates to a device for operating the jaws of a chuck to open or close the jaws for location or removal of a drill bit or the like.
  • the tool presently used is a chuck key which locates in a radial pilot hole in the chuck and is rotated to rotate a gear ring of the chuck.
  • a disadvantage of using a key is that in theory the key should be inserted in turn into all three of the pivot holes in the chuck body in order to provide an even torque when tightening the jaws, but in practice this is not always done.
  • An other disadvantage of a key is that it is not permanently attached to the chuck and, therefore, can be easily misplaced or lost; in addition, the key and chuck openings are subject to wear.
  • An object of this invention is to obviate or mitigate the aforementioned disadvantages.
  • a device for operating a chuck which includes a set of jaws mounted within a rotatab e cylindrical barrel which extends from a sleeve having a bevelled gear ring, the barrel having three radial pivot holes for location of a chuck key to engage the bevelled gear ring, said device comprising a collar which locates around the barrel of the chuck and which supports at least one radially disposed pin mounting a bevel gear member for engagement with the chuck gear ring, said pin being locatable in a pivot hole in the chuck barrel so that when the collar is manually rotated relative to the sleeve the bevel gear member on the pin will rotate the chuck ring gear to open or close the chuck jaws.
  • the collar carries three radially disposed pins at 120° disposition, each for location in a pivot hole of the chuck barrel.
  • the collar is of unitary construction having a front face, a rear face having an annular recess therein, at least one radial aperture through which a radial pin extends and a bevel gear member located on the pin within the recess.
  • the or each pin is slidably carried in the collar so that the inner end can be withdrawn radially beyond the peripheral dimension of the chuck barrel to enable axial location of the collar therearound.
  • the pin is slidable through the bevel gear member.
  • a gear ring is carried in the recess of the collar facing rearwards and engaging the or each bevel gear member.
  • said gear ring is moveable relative to the collar.
  • the bevel gear member is a single bevel gear and the annular gear ring within the collar is co ⁇ incident with the ring gear of the chuck.
  • the bevel gear member is a back-to-back gear whereof the radial inner gear engages the ring gear of the chuck and the radially outer gear engages the gear ring in the collar.
  • the perimeter of the collar is non circular, preferably substantially triangular.
  • the collar is a composite assembly comprising a support ring to receive the radially outer end of the or each pin which is located in a pivot hole of the chuck barrel and which is in engagement with the chuck gear ring, and a drive ring which holdingly engages the support ring so that both rings can be manually rotated to rotate the barrel relative to the sleeve of the chuck to cause the chuck jaws to open or close.
  • Fig. 1 is a rear elevation of a device according to the invention
  • Fig. 2 is a fragmentation sectional side elevation of the device mounted on a chuck
  • Fig. 3 is a view similar to Fig. 2 but showing the device in its operational mode, i.e. with a pin located in a pivot hole of the chuck;
  • Fig. 4 is a plan view of a pin and gear member
  • Fig. 5 is a side view of a chuck mounting the device according to another embodiment, the device being shown in section.
  • the device comprises a collar 10 which carries three radially disposed pins 11 spaced at 120° to each other and the pins 11 each carry a bevel gear member 12.
  • the collar 10 is of substantially equilateral triangular shape with a circular through hole 13 and a circular recess 14 in the rear face.
  • the rear wall of the device therefore has narrow portions 15 between thick corner portions 16.
  • the pins 11 extend through radial holes in the thick corner portions.
  • the pins 11 are slidable in the radial holes of the collar and slidable also relative to their respective gear members 12. This is to enable the position of the inner ends of the pins to be radially adjusted for a purpose hereinafter described.
  • a "pen-clip" type of device 17 is attached to the outer end of each pin.
  • Two notches 18, 19 are provided in a face of the corner portions, preferably on the rear face, the notch 18 being radially outward of notch 19.
  • the bevel gear member 12 diverges inwardly of the collar 10; at its outer end there is a flange 21 which engages the surface of the inner wall of the collar.
  • annular gear ring 22 Within the recess of the device is an annular gear ring 22, the teeth of which face rearwards and engage the three bevel gear members 12.
  • the ring 22 thus prevents a gear member 12 falling by gravity off its pin should it tend to do so.
  • the gear ring is not fixedly attached to the collar but 'floats', i.e. is free to rotate in conjunction with rotation of the gear members 12.
  • the device is for location on a chuck 25 as illustrated in Fig. 4.
  • the chuck has a set of jaws 26 mounted within a rotatable cylindrical barrel 27 which extends from a sleeve 28 having a bevelled gear ring 29.
  • the barrel 27 has three radial pivot holes 30 at 120° spaced locations, normally for location of a chuck key when it is desired to tighten or loosen the grip of the jaws 26 on a drill bit or the like.
  • the collar is located axially around the barrel moving relatively rearwards on to it so that the three bevel gear members 12 will engage the gear ring 29 of the chuck. At this stage, the pins 11 are in their "withdrawn” positions. The collar is rotatably adjusted if necessary until the pins can be pushed inwards, each into a pivot hole 30.
  • the collar 10, thus mounted in the chuck 25 can remain thereon as a permanent fixture but it can, if or when necessary be removed by freeing the legs 20 from notches 19 and withdrawing the pins to notches 18.
  • the collar In order to lighten or loosen the grip of the chuck jaws 26, the collar is manually rotated relative to the tool of which the chuck is a part.
  • the substantially triangular shape of the collar provides for a better hand grip e.g. between the user's thumb and forefinger.
  • a composite collar assembly may be provided, and while it may be preferable to have a single bevel gear member on each pin, a pair of back-to-back gears may be provided. These features are illustrated in the embodiment shown in Fig. 5 wherein the collar assembly comprises a support ring 35 and a drive ring 36.
  • the support ring 35 in this embodiment is a composite unit comprising a mounting ring 35' and a retaining ring 35". These abutting surfaces co-operate so that both rings 35', 35" are rotatable together.
  • the retaining ring 35" has three recesses 37 in its forward face each to accommodate the outer half 38 of back- to-back bevel gear member 38/39 carried on a pin 40 which projects from each end thereof.
  • the drive ring 36 has a recessed rear face which has a rearwardly facing gear ring 41 to engage the outer bevel gear 38.
  • the drive ring 36 also has a rearwardly extending sleeve 44 which overlies the bevel gears, the support ring 35 i.e. retaining ring 35' and mounting ring 35".
  • Radially inward projections 43 on the sleeve 42 engage recesses in the mounting ring 35' to lock the drive ring 12 to the composite support ring 35.
  • the composite collar is mounted on the chuck 25 as follows:-
  • the mounting ring 35' then the retaining ring 35" are placed axially over the chuck sleeve 28.
  • the three back-to- back gears 38/39 on the pins 40 is then positioned so that the inner end of each pin locates in a pivot hole 30 of the chuck, the inner gear 39 engages the gear ring 29 of the chuck and the outer gear 38 and outer end of the pin locate in the recesses 37 in the retaining ring.
  • the drive ring is then located in position and locked into the composite support ring 35.
  • the device as hereinbefore described, with reference to Figs. 1 to 5 or to Fig. 6, is advantageous over a chuck key:-

Landscapes

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

Abstract

Un collier (10) de forme triangulaire comporte trois trous radiaux, situés au niveau de ses coins (16), ainsi qu'une clavette (11) placée de manière coulissante dans chaque trou. Chaque clavette porte un élément (12) d'engrenage conique, lequel se place dans un évidement annulaire (14) situé dans la face arrière dudit collier, et engage un anneau (22) d'engrenage 'flottant' porté par ledit collier dans ledit évidement. Les clavettes (11) peuvent coulisser à l'intérieur dudit élément (12) d'engrenage, afin de se placer dans les trous (30) de pivot dudit mandrin (25), ou peuvent être rentrées dans ledit élément (12) d'engrenage, afin de permettre audit collier d'être placé axialement, de sorte que lesdits éléments (12) d'engrenage s'engagent dans l'anneau (29) à engrenage dudit mandrin. Un dispositif de fixation du type à pince tient lesdites clavettes en position contre les forces centrifuges provoquées à mesure que le collier tourne avec le mandrin, lorsqu'on utilise la mèche. Lesdits éléments (12) d'engrenage, s'engagent dans un anneau (29) à engrenage situé sur ledit mandrin, de sorte que, lorsque ledit collier est mis en rotation manuellement par rapport audit anneau (29) à engrenage, lesdits éléments (12) d'engrenage agissent sur ce dernier (29) afin de provoquer l'ouverture ou la fermeture des mâchoires (26) dudit mandrin. Dans un autre mode de réalisation, ledit collier est un ensemble composite comportant un anneau (35) de support, destiné à supporter les clavettes (40) radiales, ainsi que lesdits éléments (38, 39) d'engrenage coniques portés par chaque clavette, ainsi qu'un anneau (36) d'entraînement lequel se place sur ledit anneau de support et est fixé à ce dernier, de sorte que les deux anneaux (35, 36) tournent ensemble lorsque ledit anneau d'entraînement est mis en rotation manuellement, afin de provoquer l'ouverture ou la fermeture desdites mâchoires (26) du mandrin par lesdits éléments (38, 39) d'engrenage, lesquels viennent au contact de l'anneau (29) à engrenage dudit mandrin.
PCT/GB1990/000473 1989-03-30 1990-03-30 Dispositif d'actionnement d'un mandrin WO1990011861A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB898907223A GB8907223D0 (en) 1989-03-30 1989-03-30 A device for operating a chuck
GB8907223.5 1989-03-30

Publications (1)

Publication Number Publication Date
WO1990011861A1 true WO1990011861A1 (fr) 1990-10-18

Family

ID=10654208

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1990/000473 WO1990011861A1 (fr) 1989-03-30 1990-03-30 Dispositif d'actionnement d'un mandrin

Country Status (3)

Country Link
EP (1) EP0465540A1 (fr)
GB (1) GB8907223D0 (fr)
WO (1) WO1990011861A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992010319A1 (fr) * 1990-12-05 1992-06-25 Robert Bosch Gmbh Mandrin porte-foret
WO1995027582A1 (fr) * 1994-04-12 1995-10-19 Flynn Jerome R Dispositif de serrage automatique pour mandrin
EP1210207A4 (fr) * 1999-04-28 2003-04-16 Senco Products Outil de soudage de goujons possedant un mandrin de chargement automatique et son chargeur
CN111112666A (zh) * 2020-02-12 2020-05-08 王康康 一种可快速夹紧的金属切削机床
CN116833785A (zh) * 2023-07-07 2023-10-03 温岭市明华齿轮有限公司 一种齿轮定位钻孔工装夹具

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE189098C (fr) *
FR696938A (fr) * 1930-05-03 1931-01-09 Virgile Amyot Fils De Perfectionnements aux mandrins de serrage
US3190665A (en) * 1963-07-11 1965-06-22 Sztricsko Janos Key operated chuck
US4095811A (en) * 1976-12-13 1978-06-20 Max Cohen Chuck jaw operating and closing device
US4532834A (en) * 1982-02-05 1985-08-06 Hartman Clyde H Two-piece drill chuck wrench

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE189098C (fr) *
FR696938A (fr) * 1930-05-03 1931-01-09 Virgile Amyot Fils De Perfectionnements aux mandrins de serrage
US3190665A (en) * 1963-07-11 1965-06-22 Sztricsko Janos Key operated chuck
US4095811A (en) * 1976-12-13 1978-06-20 Max Cohen Chuck jaw operating and closing device
US4532834A (en) * 1982-02-05 1985-08-06 Hartman Clyde H Two-piece drill chuck wrench

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992010319A1 (fr) * 1990-12-05 1992-06-25 Robert Bosch Gmbh Mandrin porte-foret
WO1995027582A1 (fr) * 1994-04-12 1995-10-19 Flynn Jerome R Dispositif de serrage automatique pour mandrin
EP1210207A4 (fr) * 1999-04-28 2003-04-16 Senco Products Outil de soudage de goujons possedant un mandrin de chargement automatique et son chargeur
CN111112666A (zh) * 2020-02-12 2020-05-08 王康康 一种可快速夹紧的金属切削机床
CN111112666B (zh) * 2020-02-12 2020-10-30 柳州市万仓机械制造有限公司 一种可快速夹紧的金属切削机床
CN116833785A (zh) * 2023-07-07 2023-10-03 温岭市明华齿轮有限公司 一种齿轮定位钻孔工装夹具

Also Published As

Publication number Publication date
EP0465540A1 (fr) 1992-01-15
GB8907223D0 (en) 1989-05-10

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