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GB1194983A - Improvements in or relating to Fluid Pressure Transmission Means for Use on Machine-tool Heads - Google Patents

Improvements in or relating to Fluid Pressure Transmission Means for Use on Machine-tool Heads

Info

Publication number
GB1194983A
GB1194983A GB40850/68A GB4085068A GB1194983A GB 1194983 A GB1194983 A GB 1194983A GB 40850/68 A GB40850/68 A GB 40850/68A GB 4085068 A GB4085068 A GB 4085068A GB 1194983 A GB1194983 A GB 1194983A
Authority
GB
United Kingdom
Prior art keywords
oil
actuator
ducts
duct
chamber
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
Application number
GB40850/68A
Inventor
Pedro Sagarduy Doistua
Conception Arostegui Goiri
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1194983A publication Critical patent/GB1194983A/en
Expired 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/01—Locking-valves or other detent i.e. load-holding devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Gripping On Spindles (AREA)

Abstract

1,194,983. Hydraulic actuators. P.S. DOISTUA and C.A. GOIRI. Aug.27, 1968 [Nov. 23, 1967], No.40850/68. Heading F1P. [Also in Division B3] A rotary machine tool head 1, 2 having a fluid operated actuator piston 16 for operating a chuck, is provided with a rotary part 3 which includes a valve assembly, Fig. 4, supplied with oil under pressure when the actuator is to be operated and arranged to trap oil in the actuator when the oil supply is cut-off. The actuator piston 16 slides in a cylinder defined by the rotary parts 1, 2, 3 and divides the cylinder into chambers 15, 23. The oil is trapped in these chambers when the oil supply is cut-off and hence the actuator is locked in its adjusted position. To operate the actuator oil is supplied to the valve assembly through one or other of ducts 11, 21 by selective pressurization of annular grooves 9, 19 in a stationary block 4. Assuming the duct 11 is pressurized, then the right hand non-return valve 37 opens to allow oil to flow through ducts 12, 13, 14 into the actuator chamber 15. The increase in the oil pressure in the duct 11 causes leftwards displacement of a piston 27 and consequential opening of the left hand non-return valve 37 so that oil in the opposite chamber 23 exhausts through ducts 22, 21. If the duct 21 is pressurized, oil flows to chamber 23 for operation of the actuator in the reverse direction.
GB40850/68A 1967-11-23 1968-08-27 Improvements in or relating to Fluid Pressure Transmission Means for Use on Machine-tool Heads Expired GB1194983A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES347527A ES347527A1 (en) 1967-11-23 1967-11-23 Improvements in or relating to Fluid Pressure Transmission Means for Use on Machine-tool Heads

Publications (1)

Publication Number Publication Date
GB1194983A true GB1194983A (en) 1970-06-17

Family

ID=8446973

Family Applications (1)

Application Number Title Priority Date Filing Date
GB40850/68A Expired GB1194983A (en) 1967-11-23 1968-08-27 Improvements in or relating to Fluid Pressure Transmission Means for Use on Machine-tool Heads

Country Status (5)

Country Link
BE (1) BE718037A (en)
ES (1) ES347527A1 (en)
FR (1) FR1603375A (en)
GB (1) GB1194983A (en)
SE (1) SE356702B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2829146A1 (en) * 1977-07-04 1979-01-25 Precisi On Ind Rueil Malmaison HYDRAULIC CYLINDERS, IN PARTICULAR FOR CONTROLLING A WORKPIECE CHUCK FOR MACHINE TOOLS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4249451A (en) 1977-04-07 1981-02-10 La Precision Industrielle Rotary hydraulic jack device
DE2829146A1 (en) * 1977-07-04 1979-01-25 Precisi On Ind Rueil Malmaison HYDRAULIC CYLINDERS, IN PARTICULAR FOR CONTROLLING A WORKPIECE CHUCK FOR MACHINE TOOLS

Also Published As

Publication number Publication date
SE356702B (en) 1973-06-04
ES347527A1 (en) 1969-02-01
FR1603375A (en) 1971-04-13
BE718037A (en) 1968-12-16

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees