GB982003A - Improvements in hydraulic or pneumatic programming apparatus - Google Patents

Improvements in hydraulic or pneumatic programming apparatus

Info

Publication number
GB982003A
GB982003A GB2134362A GB2134362A GB982003A GB 982003 A GB982003 A GB 982003A GB 2134362 A GB2134362 A GB 2134362A GB 2134362 A GB2134362 A GB 2134362A GB 982003 A GB982003 A GB 982003A
Authority
GB
United Kingdom
Prior art keywords
piston
fluid
hole
groove
pressure
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
GB2134362A
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
Priority to GB2134362A priority Critical patent/GB982003A/en
Publication of GB982003A publication Critical patent/GB982003A/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
    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/24—Other details, e.g. assembly with regulating devices for restricting the stroke

Landscapes

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

Abstract

982,003. Fluid pressure apparatus. F. G. GRISLEY. June 4, 1963 [June 2, 1962], No. 21343/62. Heading F1P. [Also in Division B3] A programming apparatus for a machine such as a drill, mill or capstan lathe, comprises a cylinder 1 having pressure fluid supply pipes 14, 15 and an internal longitudinal groove 2 communicating with a tank or with the atmosphere through apertures 3, and with the inside of a rotatable sleeve 9 through selectively aligned holes 21 therein, the holes being circumferentially and axially spaced to determine the particular programme of movements to be carried out by a piston 11 slidable in the sleeve 9 as a result of differential pressure on opposite sides thereof, and having a rod 12 secured thereto for controlling the machine. In operation pressure fluid from a common source is divided into two streams, each stream passing through an adjustable flow restrictor and a flow indicator to thereafter act on either side of the piston 11. The flow restrictors are adjusted to create the required pressure differential and to compensate for the different effective areas of each side of the piston 11. If one of the holes 21 is aligned with the groove 2 in the cylinder, fluid can discharge through the apertures 3 and the piston therefore moves to cover the hole 21 whereby the force acting on the piston balances and the piston 11 comes to rest over the hole. When the piston is to be moved to a new position a pinion 25 engaging a geared flange 24 on the sleeve 9 is rotated to align another hole 21 with the groove. Alternatively the flange may be formed with ratchet teeth whereby the flange can be periodically rotated by a pawl or push rod. Fig. 6 shows a programming apparatus wherein the piston 11 completes part of its stroke quickly and the remaining part at a slower speed. In operation fluid ahead of the piston initially discharges through the hole 21 aligned with the groove 2 and a pipe 26 having a restrictor 27 until the piston covers the hole 21 whereby fluid is discharged through the pipe 26 only.
GB2134362A 1962-06-02 1962-06-02 Improvements in hydraulic or pneumatic programming apparatus Expired GB982003A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2134362A GB982003A (en) 1962-06-02 1962-06-02 Improvements in hydraulic or pneumatic programming apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2134362A GB982003A (en) 1962-06-02 1962-06-02 Improvements in hydraulic or pneumatic programming apparatus

Publications (1)

Publication Number Publication Date
GB982003A true GB982003A (en) 1965-02-03

Family

ID=10161283

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2134362A Expired GB982003A (en) 1962-06-02 1962-06-02 Improvements in hydraulic or pneumatic programming apparatus

Country Status (1)

Country Link
GB (1) GB982003A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2081645A1 (en) * 1970-03-03 1971-12-10 Ibm
US4056040A (en) * 1974-04-20 1977-11-01 Hubert Fussangel Shock absorber
US6505584B2 (en) 2000-12-20 2003-01-14 Visteon Global Technologies, Inc. Variable engine valve control system
US6536388B2 (en) 2000-12-20 2003-03-25 Visteon Global Technologies, Inc. Variable engine valve control system
US6584885B2 (en) 2001-06-12 2003-07-01 Visteon Global Technologies, Inc. Variable lift actuator
EP4269811A1 (en) * 2022-04-25 2023-11-01 Hamilton Sundstrand Corporation Fail-fixed hydraulic actuator

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2081645A1 (en) * 1970-03-03 1971-12-10 Ibm
US4056040A (en) * 1974-04-20 1977-11-01 Hubert Fussangel Shock absorber
US6505584B2 (en) 2000-12-20 2003-01-14 Visteon Global Technologies, Inc. Variable engine valve control system
US6536388B2 (en) 2000-12-20 2003-03-25 Visteon Global Technologies, Inc. Variable engine valve control system
US6584885B2 (en) 2001-06-12 2003-07-01 Visteon Global Technologies, Inc. Variable lift actuator
EP4269811A1 (en) * 2022-04-25 2023-11-01 Hamilton Sundstrand Corporation Fail-fixed hydraulic actuator

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