GB982003A - Improvements in hydraulic or pneumatic programming apparatus - Google Patents
Improvements in hydraulic or pneumatic programming apparatusInfo
- 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
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.
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)
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 |
-
1962
- 1962-06-02 GB GB2134362A patent/GB982003A/en not_active Expired
Cited By (6)
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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