FR2423291A1 - CHUCK FOR ROTARY MACHINE-TOOL - Google Patents

CHUCK FOR ROTARY MACHINE-TOOL

Info

Publication number
FR2423291A1
FR2423291A1 FR7811661A FR7811661A FR2423291A1 FR 2423291 A1 FR2423291 A1 FR 2423291A1 FR 7811661 A FR7811661 A FR 7811661A FR 7811661 A FR7811661 A FR 7811661A FR 2423291 A1 FR2423291 A1 FR 2423291A1
Authority
FR
France
Prior art keywords
chuck
rotary machine
tool
jaw
rotation
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.)
Withdrawn
Application number
FR7811661A
Other languages
French (fr)
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.)
PRECISION INDUSTRIELLE
Original Assignee
PRECISION INDUSTRIELLE
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 PRECISION INDUSTRIELLE filed Critical PRECISION INDUSTRIELLE
Priority to FR7811661A priority Critical patent/FR2423291A1/en
Priority to GB7913183A priority patent/GB2023465A/en
Priority to IT67815/79A priority patent/IT1118566B/en
Priority to DE19792915854 priority patent/DE2915854A1/en
Priority to JP4808879A priority patent/JPS54142672A/en
Publication of FR2423291A1 publication Critical patent/FR2423291A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B23B31/24—Chucks characterised by features relating primarily to remote control of the gripping means
    • B23B31/30—Chucks characterised by features relating primarily to remote control of the gripping means using fluid-pressure means in the chuck
    • B23B31/302—Hydraulic equipment, e.g. pistons, valves, rotary joints
    • 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
    • B23B31/14—Chucks with simultaneously-acting jaws, whether or not also individually adjustable involving the use of centrifugal force
    • B23B31/141—To counterbalance the jaws
    • 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
    • B23B31/16—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving radially
    • B23B31/16195—Jaws movement actuated by levers moved by a coaxial control rod
    • B23B31/16216—Jaws movement actuated by levers moved by a coaxial control rod using fluid-pressure means to actuate the gripping means
    • B23B31/1622—Jaws movement actuated by levers moved by a coaxial control rod using fluid-pressure means to actuate the gripping means using mechanical transmission through the spindle

Abstract

L'invention concerne un mandrin de serrage pour machine-outil rotative. Ce mandrin comporte au moins deux mors tels que 9-10, montés coulissants radialement dans le corps 1, entraîné en rotation par la broche 2. Selon l'invention, au moins une masselotte 14a est montée pivotante autour d'un axe 15, solidaire du corps 1 et perpendiculaire à son axe de rotation A; des moyens 14b-16 sont prévus pour transmettre au moins au mors 9-10, la force centrifuge appliquée à la masselotte 14a, avec un rapport de transmission tel que la force transmise s'oppose à la force centrifuge appliquée au mors 9-10, et de préférence l'annule. L'invention est applicable notamment au serrage, tant extérieur qu'intérieur, des pièces à usiner sur un tour.The invention relates to a chuck for a rotary machine tool. This mandrel comprises at least two jaws such as 9-10, mounted to slide radially in the body 1, driven in rotation by the spindle 2. According to the invention, at least one weight 14a is mounted to pivot about an axis 15, integral with of the body 1 and perpendicular to its axis of rotation A; means 14b-16 are provided to transmit at least to the jaw 9-10, the centrifugal force applied to the weight 14a, with a transmission ratio such that the transmitted force opposes the centrifugal force applied to the jaw 9-10, and preferably cancel it. The invention is particularly applicable to the clamping, both outside and inside, of the parts to be machined on a lathe.

FR7811661A 1978-04-20 1978-04-20 CHUCK FOR ROTARY MACHINE-TOOL Withdrawn FR2423291A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR7811661A FR2423291A1 (en) 1978-04-20 1978-04-20 CHUCK FOR ROTARY MACHINE-TOOL
GB7913183A GB2023465A (en) 1978-04-20 1979-04-17 Chuck
IT67815/79A IT1118566B (en) 1978-04-20 1979-04-18 TIGHTENING SPINDLE FOR A ROTARY MACHINE TOOL
DE19792915854 DE2915854A1 (en) 1978-04-20 1979-04-19 CHUCK FOR MACHINE TOOLS
JP4808879A JPS54142672A (en) 1978-04-20 1979-04-20 Clamping chuck and its controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7811661A FR2423291A1 (en) 1978-04-20 1978-04-20 CHUCK FOR ROTARY MACHINE-TOOL

Publications (1)

Publication Number Publication Date
FR2423291A1 true FR2423291A1 (en) 1979-11-16

Family

ID=9207381

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7811661A Withdrawn FR2423291A1 (en) 1978-04-20 1978-04-20 CHUCK FOR ROTARY MACHINE-TOOL

Country Status (5)

Country Link
JP (1) JPS54142672A (en)
DE (1) DE2915854A1 (en)
FR (1) FR2423291A1 (en)
GB (1) GB2023465A (en)
IT (1) IT1118566B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2518261A1 (en) * 1981-12-15 1983-06-17 Forkardt Paul Gmbh METHOD FOR DETECTING A CLAMPING FORCE

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5858163B2 (en) * 1980-03-31 1983-12-23 豊和工業株式会社 balance check
EP0079131B1 (en) * 1981-10-29 1985-12-27 Pratt Burnerd International Limited Workholding devices
US4999002A (en) * 1990-08-15 1991-03-12 Anton Fink High speed chuck apparatus
PL234713B1 (en) * 2019-02-28 2020-03-31 Politechnika Swietokrzyska Wedge-type lathe chuck with compensation of centrifugal force effects

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB825763A (en) * 1955-06-07 1959-12-23 Prec Ind Sa Improvements in or relating to machine-tool chucks and their operating mechanism
US3370859A (en) * 1965-07-16 1968-02-27 Erickson Tool Co Chuck
DE2150885B1 (en) * 1971-10-13 1973-03-08 Forkardt Paul Kg Power operated chuck for lathes
DE2458958A1 (en) * 1974-12-12 1976-06-24 Boehringer Gmbh Geb Machine tool retention device tension force control - has pressurised piston valve, and is spindle speed dependent
FR2306038A1 (en) * 1975-04-04 1976-10-29 Sp Manufacturing Corp TIGHTENING CHUCK
DE2530573A1 (en) * 1975-07-09 1977-01-13 Forkardt Paul Kg Rotary machine variable force chuck - has speed dependent clamping force with compensating weights operating piston activating pressure medium
US4009888A (en) * 1975-11-24 1977-03-01 Cushman Industries, Incorporated Self-contained power chuck with centrifugally balanced jaws
DE2611923A1 (en) * 1976-03-20 1977-09-22 Hofmann & Co Kg W Small dia. power operated chuck - has three weighted arms to compensate for centrifugal force on jaw operating mechanism

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB825763A (en) * 1955-06-07 1959-12-23 Prec Ind Sa Improvements in or relating to machine-tool chucks and their operating mechanism
US3370859A (en) * 1965-07-16 1968-02-27 Erickson Tool Co Chuck
DE2150885B1 (en) * 1971-10-13 1973-03-08 Forkardt Paul Kg Power operated chuck for lathes
DE2458958A1 (en) * 1974-12-12 1976-06-24 Boehringer Gmbh Geb Machine tool retention device tension force control - has pressurised piston valve, and is spindle speed dependent
FR2306038A1 (en) * 1975-04-04 1976-10-29 Sp Manufacturing Corp TIGHTENING CHUCK
DE2530573A1 (en) * 1975-07-09 1977-01-13 Forkardt Paul Kg Rotary machine variable force chuck - has speed dependent clamping force with compensating weights operating piston activating pressure medium
US4009888A (en) * 1975-11-24 1977-03-01 Cushman Industries, Incorporated Self-contained power chuck with centrifugally balanced jaws
DE2611923A1 (en) * 1976-03-20 1977-09-22 Hofmann & Co Kg W Small dia. power operated chuck - has three weighted arms to compensate for centrifugal force on jaw operating mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2518261A1 (en) * 1981-12-15 1983-06-17 Forkardt Paul Gmbh METHOD FOR DETECTING A CLAMPING FORCE

Also Published As

Publication number Publication date
JPS54142672A (en) 1979-11-07
GB2023465A (en) 1980-01-03
DE2915854A1 (en) 1979-10-31
IT1118566B (en) 1986-03-03
IT7967815A0 (en) 1979-04-18

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Legal Events

Date Code Title Description
ST Notification of lapse