GB1401770A - Numerical control of hydraulic actuators - Google Patents

Numerical control of hydraulic actuators

Info

Publication number
GB1401770A
GB1401770A GB6061071A GB6061071A GB1401770A GB 1401770 A GB1401770 A GB 1401770A GB 6061071 A GB6061071 A GB 6061071A GB 6061071 A GB6061071 A GB 6061071A GB 1401770 A GB1401770 A GB 1401770A
Authority
GB
United Kingdom
Prior art keywords
chambers
piston
pressure source
pistons
moved
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
GB6061071A
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.)
Plessey Co Ltd
Original Assignee
Plessey Co 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 Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB6061071A priority Critical patent/GB1401770A/en
Publication of GB1401770A publication Critical patent/GB1401770A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
    • F15B11/12—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action
    • F15B11/121—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action providing distinct intermediate positions
    • F15B11/126—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action providing distinct intermediate positions by means of actuators of the standard type with special circuit controlling means
    • 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
    • F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
    • F15B7/003—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors with multiple outputs
    • 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
    • F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
    • F15B7/005—With rotary or crank input
    • 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
    • F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
    • F15B7/06—Details
    • F15B7/08—Input units; Master units

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

1401770 Hydraulic control circuits PLESSEY CO Ltd 27 Nov 1972 [29 Dec 1971] 60610/71 Heading F1P A piston 1b Fig. 1 is moved a predetermined amount in a cylinder 1a by actuating one or more of pistons 3b, 4b, 5b to force liquid from one or more of chambers 3e, 4e, Se into chamber le. By arranging that the volumes of chambers 3e-5e are in the ratio 1:2:4 the piston 1b can be moved in equal steps up to a maximum of seven steps. As described the pistons 3b-5b are pneumatically operated and are controlled by solenoid valves which connect selected ones of chambers 3f-5f to a pressure source P or to atmosphere. To return the piston 1b to the position shown the space If is connected to the pressure source P. Fig. 2 (not shown) illustrates a circuit in which the valve 11 is replaced by a pressure source P1 which is permanently connected to the space 1f and is at a lower pressure than the supply P 2 to the spaces 3f-5f.
GB6061071A 1971-12-29 1971-12-29 Numerical control of hydraulic actuators Expired GB1401770A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB6061071A GB1401770A (en) 1971-12-29 1971-12-29 Numerical control of hydraulic actuators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6061071A GB1401770A (en) 1971-12-29 1971-12-29 Numerical control of hydraulic actuators

Publications (1)

Publication Number Publication Date
GB1401770A true GB1401770A (en) 1975-07-30

Family

ID=10485815

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6061071A Expired GB1401770A (en) 1971-12-29 1971-12-29 Numerical control of hydraulic actuators

Country Status (1)

Country Link
GB (1) GB1401770A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997007275A1 (en) * 1995-08-16 1997-02-27 Danley Engineering Services Limited Needlebar positioning system
DE202011103604U1 (en) * 2011-07-22 2012-07-24 Otto Schell Linear drive system with a dual-medium working cylinder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997007275A1 (en) * 1995-08-16 1997-02-27 Danley Engineering Services Limited Needlebar positioning system
DE202011103604U1 (en) * 2011-07-22 2012-07-24 Otto Schell Linear drive system with a dual-medium working cylinder

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee