US2835227A - Hydraulic rotary distributor and its application to operating jacks for work-holdersof machine-tools - Google Patents

Hydraulic rotary distributor and its application to operating jacks for work-holdersof machine-tools Download PDF

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Publication number
US2835227A
US2835227A US413891A US41389154A US2835227A US 2835227 A US2835227 A US 2835227A US 413891 A US413891 A US 413891A US 41389154 A US41389154 A US 41389154A US 2835227 A US2835227 A US 2835227A
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United States
Prior art keywords
oil
distributor
ring
jack
work
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
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US413891A
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English (en)
Inventor
Louis J M Gamet
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LA PRECISION INDUSTRIELLE
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LA PRECISION INDUSTRIELLE
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Publication of US2835227A publication Critical patent/US2835227A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
    • F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
    • F16K3/26—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
    • 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
    • B23B31/003—Work or tool ejection means
    • 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
    • B23B31/20—Longitudinally-split sleeves, e.g. collet chucks
    • B23B31/201—Characterized by features relating primarily to remote control of the gripping means
    • B23B31/207—Characterized by features relating primarily to remote control of the gripping means using mechanical transmission through the spindle
    • 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
    • B23B31/20—Longitudinally-split sleeves, e.g. collet chucks
    • B23B31/201—Characterized by features relating primarily to remote control of the gripping means
    • B23B31/207—Characterized by features relating primarily to remote control of the gripping means using mechanical transmission through the spindle
    • B23B31/2073—Axially fixed cam, moving 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
    • B23B31/24—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
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q16/00—Equipment for precise positioning of tool or work into particular locations not otherwise provided for
    • B23Q16/001—Stops, cams, or holders therefor
    • B23Q16/002—Stops for use in a hollow spindle
    • 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
    • B23B2231/24—Cooling or lubrication means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2270/00—Details of turning, boring or drilling machines, processes or tools not otherwise provided for
    • B23B2270/02—Use of a particular power source
    • B23B2270/025—Hydraulics

Definitions

  • the rotating member is an annular hydraulic jack rotating cwith ⁇ the-spir1'dle ofa machine-tool, the jack comprising a cylinder and piston of which one is rigidly fixed to .rislc of internal fracture.
  • this casing ensures in addition the dissipation to the outside atmosphere of the heat developed by the internal friction ⁇ ot the oil ⁇ inside the distributor, and it is with advantage ⁇ provided-with tins for this purpose.
  • this casing provides safety against risk of injury to the user by rotating parts and against the l'n consequence, the dimensions of' the walls of the casing and those of the cooling tins are chosen so ⁇ as to. .give the casing the ⁇ necessary rigidity.
  • ⁇ the leakage of oil between the rotating member and the ring depends essentially, for any given clearance between these ⁇ two.V parts, on ⁇ the viscosity ⁇ of the oil used.
  • the oil ⁇ flowing throughs this clearance forms two lms, one of which adheres to the ring and the Vother tothe rotatingmember. If ⁇ the total thickness Vof these films is less than the clearance, no flow of liquiditakes .-.pl.ace;.this is ⁇ especially the case when, at the time of starting up,.the oil which is at the. ambient temperature iswhghly Viscous.
  • the width of the space betweenthe two which determines the leakage cross-section
  • one single distributor may comprise ⁇ a number of channels for the oil under pressure and of distribution Agrooves which enable a ⁇ number of servomotors or hydraulic motors to be fed from thesame t rotating member.
  • yilhese servo-motors may be, ⁇ for example, la jack .intended ,to eifach ⁇ whilst the spindle is continually rotating, the ejection ofthe machined work ⁇ from the work-holder when completed, or ⁇ the, introduction of the work to be machined in the Work-holder.
  • the hydraulic ⁇ motors may drivetools which carry out a supplementary machining operation on the partei the work held in the workgholderduring the rotation of this latter fand of thework-piece which it carries.
  • ⁇ the distributor ⁇ injaccordance with the ,invention may ⁇ be, used to direct the oil under ,pressureyprodnced froman external source, .into a chantwo parts does notincrease due to wear, and in conseweturedoes not varyin course of time;
  • the internal passage formed in the spindle of the ma chine by the machine constructor is left free, the internal diameter of the distributor being chosen to be equal to or greater than the diameter of this passage;
  • Fig. l is an axial cross-section of a jack provided with a distributor in accordance with the invention, mounted on the spindle of a machine-tool. This ligure corresponds to the cross-section line I-I of Fig. 2.
  • Fig. 2 is an end view of the jack shown in Fig. l.
  • Fig. 3 shows in axial cross-section a further form of embodiment of the invention. This cross-section corresponds to the line III-III of the plan view of this jack shown in Fig. 4.
  • Fig. 5 shows in axial cross-section an arrangement of the spindle of a machine-tool comprising a distributor provided with a number of oil supply lines.
  • Fig. 6 shows a separate distributor in axial cross-section.
  • the oil may be supplied to each of these compartments through the medium of a rotating distributor which comprises a rotating portion lconstituted by a hollow cylinder or journal 4a, which is an extension of the jack cylinder, and a iixed portion formed by a ring member 1t) which surrounds the journal 4a.
  • a rotating distributor which comprises a rotating portion lconstituted by a hollow cylinder or journal 4a, which is an extension of the jack cylinder, and a iixed portion formed by a ring member 1t) which surrounds the journal 4a.
  • Annular grooves 11 and 12 are formed in the ring member 10, into each of which grooves discharges a nozzle 13 and 14 respectively which are supplied with oil under pressure.
  • the left-hand compartment of the jack communicates with the groove 11 through the duct or channel 15 drilled in the cylinder 4.
  • the groove 12 communicates with the right-hand compartment of the jack through the bent duct or channel 16, which is also drilled in the cylinder 4.
  • the rotating part of the distributor is centered in the ring member carried on the casing 17, which encloses the whole assembly, by roller bearings 18 and 19 which are located on each side of this ring; the ring is also supported with respect to the portion 4a in such a way that a very narrow space (of the order of 1/100 of a millimeter) is maintained over the whole periphery of the portion 4a between this portion and the ring.
  • the same material is preferably employed for the lnanufacture of these two portions and the cross-sections of the two portions are approximately equal.
  • the roller tracks 4 of the cylindrical rollers are preferably machined directly in these two portions, which avoids the troublesome eccentricities of the bearing rings.
  • the enclosing casing 17 is closed by separate covers 20 and 21, the bored-out portions of which are applied to the rotating portions through the intermediary of uidtight packing rings 22 and 23.
  • These packing rings are preferably simple grooves for the recovery of leakage oil, due to the fact that the oil contained in the casing is at atmospheric pressure. The only friction arising in the device is thus due to the internal friction of the oil in the distributor during operation, and this enables very high speeds of rotation to be reached without wear of any rotating part.
  • the ring 10 which forms a part of the annular member in cooperation with the rotating member 4a to provide the annular duct between these members, substantially projects at both extremities thereof, thus providing the sufficient length of the annular duct between the extreme grooves 11 and 12 and the corresponding end of this annular duct.
  • the length of the annular duct will he noted, with respect to Fig. 5, in considering the space between the extreme grooves 29 and 12 and, as shown in Fig. 6, the grooves 29 and 30.
  • the casing 17 is provided with an oil-removal nozzle 24 which collects the oil from all parts of the casing. Fins 25 distributed along the surface of the casing, assist the cooling of the latter and also ensure its rigidity.
  • the oil under pressure supplied from one of the nozzles 13 or 14, (whilst the other is open to exhaust) fills the corresponding groove and at the same time the space comprised between the portion 4a and the ⁇ ring 10.
  • This deliberate and pre-determined leakage may be practically nil when the oil is cold and may rise to, for example about 2% of the oil in circulation when the machine has reached its final operating temperature.
  • the ringmember 1t is machined in the casing 17 (it may also be separately attached to this casing) but in this case, the rings surround the cylinder of the jack which forms the rotating part of the distributor so that the channels 15 and 16, by means of which the grooves 11 and 12 communicate with the compartments of the jack, are very short.
  • the bearings 18 and 19 are located on opposite sides of the jack itself, the periphery of which constitutes a distributor. There is obtained in this way a form of construction of the jack which is much shorter in length.
  • the oil-supply points in the compartments of the jack could also be provided on the faces of the latter. This arrangement is, however, objectionable hecause of the axial thrust which would thus be applied to the jack.
  • Fig. 5 Although more complete, is similar in its general lines to that which has been shown in Figs. l and 2. It shows the Work-holder chuck associated with the annular jack and a supplementary jack inside the spindle 1.
  • the threaded collar 7, which rigidly couples the piston 5 of the jack with the tube 6, is perforated at 7b and provided with a locknut 7a.
  • the work-holder chuck is of the pincet-jaw type.
  • the groove 30 communicates, through channels 33 drilled in the rotating part 4a, with space included between the spindle 1 and the tube 6. The communication being ensured by the drilled passages 7b of the threaded collar 7, by the oritice 35 formed in the tube 6, this space communicates in its turn with the internal channel of the tube 6.
  • the groove 29 communicates through the radial channels 36 formed in the portion 4a, with the groove 37a of a closure member 37 adapted to close the extremity of the rotating portion 4a; duid-tightness on each side of this groove is obtained by means of packing rings 38.
  • the groove 37a communicates through the channels 39 with the interior of the tube 6, by virtue of the extension 37b of the closure member 37 on which the tube 6 is arranged to slide through the medium of the fluid-tight packing ring 40.
  • the piston 41 slides inside the tube 6 and is rigidly coupled to a cylindrical rod 42 which extends into the interior of the conical jaws 23, passing into this member with the interposition of the huid-tight packing ring 43.
  • the fluid-tightness ofthe space comprised between the spindle 1 and the tube 6 is obtained by the packing ring 44 applied against the cylindrical portion of the pincer member, the packing ring being retained by the ring 45 inside the work-holder.
  • This ring may be put into position by virtue of the assembly of the work-holder which is in two parts, secured together by bolts 46.
  • the piston 41 comes into abutment against the extremity of the member 37b, and thus the extremity of the rod 42 located inside the chuck may itself serve as an abutment for the engagement in position of the fresh piece to be machined.
  • the assembly formed by the piston 41 and the rod 42 may be provided with an adjusting arrangement enabling its length to be varied so as to permit of the correct positioning of the piece to be machined.
  • the rotating part 4a of the distributor is centered in the ring 10, carried by the casing 17 which encloses the assembly, by the roller bearings 18 and 19 which are situated on each side of this ring, so that there is provided a very narrow clearance of the order of one hundredth of a millimeter, both along the whole length and along the periphery of the ring, between this ring and the rotating portion.
  • FIG. 5 illustrates that the rotary distributor in accordance with the invention, by
  • a rotary distributor of this kind can be constructed independently of an operating jack for workholders as is shown in Fig. ⁇ 6.
  • the rotating portion 4a of the distributor co operating with the ring 1G which is iixedly retained inside the casing 17; the two bearings 18 and 19 are arranged on each side of the distributor and serve to center the rotating portion in the ring; the channels 33 and 36 communicate with the grooves 29 and 30 and are directed into the spindle towards the utilisation points.
  • passages 47 are formed in the lower part of the ring 10 or inside the casing 17 so as to allow the return of the oil to the perennial 24.
  • conduits for the liquid under pressure leading to the distributor in accordance with the invention may be supplied from any particular source. lt is, however, necessary to provide in the liquid circuit filters such as will prevent the passage of solid particles, the size of which would be of the same order as the clearance provided between the rotary member and the ring, that is to say particles of about one hundredth of a millimeter.
  • a hydraulic pressure distributor for connecting a stationary pressure liquid supply line with chambers formed in the jack cylinder on opposite sides of the jack piston; comprising a journal fast with and extending axially from the cylinder and having a cylindrical outer wall, said journal having separate axially extending passages formed therein and communicating with the chambers, said outer wall ot the journal having axially spaced annular grooves formed therein and communi eating with the passages, a stationary ring-like member surrounding the journal and having an inner cylindrical wall radially spaced from the outer wall of the journal to provide a thin annular duct therebetween and said inner wall and outer wall extending axially beyond the grooves, said ring-like member having radial ports in communication with the grooves, said inner wall and the outer wall at their extremities being formed with confronting annular pathways, roller bearings disposed in the pathways to support and center the journal and to maintain the annular duct in the shape of a regular

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gripping On Spindles (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
US413891A 1953-03-09 1954-03-03 Hydraulic rotary distributor and its application to operating jacks for work-holdersof machine-tools Expired - Lifetime US2835227A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1075565T 1953-03-09

Publications (1)

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Country Status (4)

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US (1) US2835227A (fr)
DE (1) DE1018696B (fr)
FR (2) FR1075565A (fr)
GB (1) GB761157A (fr)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2986122A (en) * 1959-01-08 1961-05-30 Chauncey H Shattuck Revolving pressure cylinder
US3020057A (en) * 1959-02-12 1962-02-06 Prec Ind Rotary fluid supply system
DE1182505B (de) * 1959-09-10 1964-11-26 Dubied & Cie Sa E Vorrichtung zum Zufuehren von Druckfluessigkeit in den rotierenden, hydraulisch betaetigten Spannzylinder des Spannfutters od. dgl. einer Werkzeugmaschine
US3380350A (en) * 1965-10-22 1968-04-30 Midwest Gage Co Inc Rotating air cylinder utilizing air as air seal
US3417672A (en) * 1967-06-28 1968-12-24 Sp Mfg Corp Rotary hydraulic cylinder
US3685397A (en) * 1970-12-21 1972-08-22 Parker Hannifin Corp Swivel fitting
US3806082A (en) * 1972-01-24 1974-04-23 Smith International Power kelly cock
US3988969A (en) * 1973-04-13 1976-11-02 La Precision Industrielle Rotary hydraulic jack
US4168654A (en) * 1976-06-14 1979-09-25 Logansport Machine Co., Inc. Fluid supply distributor
DE3016088A1 (de) * 1979-04-26 1980-11-13 Kitagawa Iron Works Co Kuehlanordnung fuer den rotierenden zylinder einer hydraulischen betaetigungsvorrichtung fuer ein werkzeugmaschinen-spannfutter
WO1981001181A1 (fr) * 1979-10-24 1981-04-30 M Winegeart Dispositif a soupape "kelly"
US4319516A (en) * 1978-11-04 1982-03-16 Roehm Guenter H Fan-cooled actuator for power chuck
US4456217A (en) * 1979-10-24 1984-06-26 Pet Tech-Dril Saf, Inc. Kelly valving apparatus
US4795128A (en) * 1988-03-01 1989-01-03 Vetco Gray Inc. Gate type kelly cock valve
WO2006046629A1 (fr) * 2004-10-29 2006-05-04 Citizen Watch Co., Ltd. Dispositif de mandrin d'une machine-outil
JP2008531312A (ja) * 2005-03-01 2008-08-14 ジーエスアイ グループ リミテッド 機械加工スピンドル
US20080224423A1 (en) * 2005-09-13 2008-09-18 Eugen Hangleiter Method for Operating an Actuation Unit and Device for Carr
CN102229055A (zh) * 2011-06-01 2011-11-02 北京北方红旗精密机械制造有限公司 一种回转式机床用中心分油器
CN101262971B (zh) * 2005-09-13 2013-08-21 罗姆股份有限公司 用于使操纵单元运行的方法以及用于执行该方法的装置
CN117780722A (zh) * 2024-01-26 2024-03-29 佛山台明智能设备有限公司 一种液压回转油缸

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1129058A (fr) * 1955-06-07 1957-01-15 Prec Ind Mandrin d'usinage et son mécanisme de commande
US3174765A (en) * 1962-11-05 1965-03-23 A And C Engineering Co Non-rotating pneumatic chuck actuator
US4304513A (en) * 1978-02-23 1981-12-08 Hurco Manufacturing Company, Inc. Milling machine including improved tool knock-out means
DE2847951C2 (de) * 1978-11-04 1986-10-23 Günter Horst 7927 Sontheim Röhm Hydraulisch betätigter Hohlspannzylinder für Spanneinrichtungen an einer rotierenden Spindel, insbesondere Drehmaschinenspindel
US4663823A (en) * 1982-03-10 1987-05-12 Renishaw Plc Machine tool
DE3306571A1 (de) * 1983-02-25 1984-08-30 Günter Horst 7927 Sontheim Röhm Hydraulisch betaetigter spannzylinder fuer spanneinrichtungen an einer rotierenden spindel, insbesondere drehmaschinenspindel
DE4341167A1 (de) * 1993-12-02 1995-06-08 Karl Hiestand Einrichtung zur Übertragung eines Druckmediums
CN103753401B (zh) * 2014-01-23 2016-08-17 沈阳海默数控机床有限公司 一种内圆磨床专用旋转配油装置

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Publication number Priority date Publication date Assignee Title
US1670138A (en) * 1925-05-08 1928-05-15 Lodge & Shipley Machine Tool C Air-operated chuck for lathes
US1851723A (en) * 1927-02-14 1932-03-29 Leo T Neidow Swivel joint
US2030142A (en) * 1934-12-10 1936-02-11 Leblond Mach Tool Co R K Chuck
US2279730A (en) * 1939-03-06 1942-04-14 Ivan H Bradley Wood-turning machine
FR875980A (fr) * 1941-03-20 1942-10-09 Pittler Werkzeugmaschinenfab Joint à graisse pour l'introduction d'air comprimé des mandrins rotatifs ou organes similaires des machines-outils
US2536565A (en) * 1945-02-08 1951-01-02 Jonkopings Motorfabrik Ab Servomotor
US2548096A (en) * 1949-04-19 1951-04-10 George F Bryant Expanding mandrel
US2568092A (en) * 1947-04-25 1951-09-18 Cushman Chuck Co Swivel connection for air operated chucks
US2673128A (en) * 1949-10-08 1954-03-23 Clarence E Reed Earth-boring drill

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Publication number Priority date Publication date Assignee Title
CH122653A (de) * 1926-11-19 1927-10-01 Oerlikon Maschf Verfahren und Einrichtung zum gasdichten Abschliessen von Gehäusen an der Durchtrittsstelle von rotierenden Wellen.
DE682613C (de) * 1938-04-27 1939-10-18 Paul Forkardt Komm Ges Pressluftzufuehrung fuer umlaufende Futter o. dgl. an Werkzeugmaschinen
DE889857C (de) * 1942-12-13 1953-09-14 Paul Forkardt K G Doppelt wirkender Spannzylinder fuer Werkzeugmaschinen
US2372592A (en) * 1944-03-27 1945-03-27 Jones & Lamson Mach Co Fluid actuated double ended chuck spindle

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1670138A (en) * 1925-05-08 1928-05-15 Lodge & Shipley Machine Tool C Air-operated chuck for lathes
US1851723A (en) * 1927-02-14 1932-03-29 Leo T Neidow Swivel joint
US2030142A (en) * 1934-12-10 1936-02-11 Leblond Mach Tool Co R K Chuck
US2279730A (en) * 1939-03-06 1942-04-14 Ivan H Bradley Wood-turning machine
FR875980A (fr) * 1941-03-20 1942-10-09 Pittler Werkzeugmaschinenfab Joint à graisse pour l'introduction d'air comprimé des mandrins rotatifs ou organes similaires des machines-outils
US2536565A (en) * 1945-02-08 1951-01-02 Jonkopings Motorfabrik Ab Servomotor
US2568092A (en) * 1947-04-25 1951-09-18 Cushman Chuck Co Swivel connection for air operated chucks
US2548096A (en) * 1949-04-19 1951-04-10 George F Bryant Expanding mandrel
US2673128A (en) * 1949-10-08 1954-03-23 Clarence E Reed Earth-boring drill

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2986122A (en) * 1959-01-08 1961-05-30 Chauncey H Shattuck Revolving pressure cylinder
US3020057A (en) * 1959-02-12 1962-02-06 Prec Ind Rotary fluid supply system
DE1182505B (de) * 1959-09-10 1964-11-26 Dubied & Cie Sa E Vorrichtung zum Zufuehren von Druckfluessigkeit in den rotierenden, hydraulisch betaetigten Spannzylinder des Spannfutters od. dgl. einer Werkzeugmaschine
US3380350A (en) * 1965-10-22 1968-04-30 Midwest Gage Co Inc Rotating air cylinder utilizing air as air seal
US3417672A (en) * 1967-06-28 1968-12-24 Sp Mfg Corp Rotary hydraulic cylinder
US3685397A (en) * 1970-12-21 1972-08-22 Parker Hannifin Corp Swivel fitting
US3806082A (en) * 1972-01-24 1974-04-23 Smith International Power kelly cock
US3988969A (en) * 1973-04-13 1976-11-02 La Precision Industrielle Rotary hydraulic jack
US4168654A (en) * 1976-06-14 1979-09-25 Logansport Machine Co., Inc. Fluid supply distributor
US4319516A (en) * 1978-11-04 1982-03-16 Roehm Guenter H Fan-cooled actuator for power chuck
DE3016088A1 (de) * 1979-04-26 1980-11-13 Kitagawa Iron Works Co Kuehlanordnung fuer den rotierenden zylinder einer hydraulischen betaetigungsvorrichtung fuer ein werkzeugmaschinen-spannfutter
US4523632A (en) * 1979-04-26 1985-06-18 Kitagawa Iron Works Co. Ltd. Cooling system of rotary fluid pressure cylinder for chucking in machine tools
US4456217A (en) * 1979-10-24 1984-06-26 Pet Tech-Dril Saf, Inc. Kelly valving apparatus
WO1981001181A1 (fr) * 1979-10-24 1981-04-30 M Winegeart Dispositif a soupape "kelly"
US4795128A (en) * 1988-03-01 1989-01-03 Vetco Gray Inc. Gate type kelly cock valve
WO2006046629A1 (fr) * 2004-10-29 2006-05-04 Citizen Watch Co., Ltd. Dispositif de mandrin d'une machine-outil
JPWO2006046629A1 (ja) * 2004-10-29 2008-05-22 シチズンホールディングス株式会社 材料加工機のチャック装置
JP2012228774A (ja) * 2005-03-01 2012-11-22 Gsi Group Ltd 機械加工スピンドル
JP2008531312A (ja) * 2005-03-01 2008-08-14 ジーエスアイ グループ リミテッド 機械加工スピンドル
US20080224423A1 (en) * 2005-09-13 2008-09-18 Eugen Hangleiter Method for Operating an Actuation Unit and Device for Carr
JP2009507662A (ja) * 2005-09-13 2009-02-26 ロェーム ゲーエムベーハー 操作ユニットの作動方法およびこの方法を実施するための装置
US8297893B2 (en) 2005-09-13 2012-10-30 Roehm Gmbh Method for operating an actuation unit and device for carrying out said method
CN101262971B (zh) * 2005-09-13 2013-08-21 罗姆股份有限公司 用于使操纵单元运行的方法以及用于执行该方法的装置
KR101404350B1 (ko) 2005-09-13 2014-06-09 룀 게엠베하 액튜에이터 작동방법 및 이를 실시하기 위한 장치
CN102229055A (zh) * 2011-06-01 2011-11-02 北京北方红旗精密机械制造有限公司 一种回转式机床用中心分油器
CN117780722A (zh) * 2024-01-26 2024-03-29 佛山台明智能设备有限公司 一种液压回转油缸

Also Published As

Publication number Publication date
FR64947E (fr) 1955-12-14
FR1075565A (fr) 1954-10-18
DE1018696B (de) 1957-10-31
GB761157A (en) 1956-11-14

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