GB937714A - Improvements in and relating to speed control of hydraulic presses - Google Patents
Improvements in and relating to speed control of hydraulic pressesInfo
- Publication number
- GB937714A GB937714A GB1887061A GB1887061A GB937714A GB 937714 A GB937714 A GB 937714A GB 1887061 A GB1887061 A GB 1887061A GB 1887061 A GB1887061 A GB 1887061A GB 937714 A GB937714 A GB 937714A
- Authority
- GB
- United Kingdom
- Prior art keywords
- speed
- pressure fluid
- bottle
- piston
- control means
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/16—Control arrangements for fluid-driven presses
- B30B15/18—Control arrangements for fluid-driven presses controlling the reciprocating motion of the ram
- B30B15/20—Control arrangements for fluid-driven presses controlling the reciprocating motion of the ram controlling the speed of the ram, e.g. the speed of the approach, pressing or return strokes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
937,714. Electric correspondence control systems. LOEWRY ENGINEERING CO. Ltd. May 25, 1962 [May 25, 1961], No. 18870/61. Class 40 (1). [Also in Group XXIX] A system for measuring or controlling the speed of a ram of an hydraulic press, comprises a device which measures the rate of change of the level of pressure fluid in an accumulator which supplies pressure fluid to advance the ram. An extrusion press comprises a main cylinder a and main ram b, the main cylinder being supplied with pressure fluid from an accumulator comprising a water bottle g and a compressed air bottle h. A piston i separates air and water in bottles g and movement of the piston i is transmitted by a rod and roller k, which may incorporate a rack-and-pinion gear, to a tacho-generator l, which supplies a voltage, proportional to the speed of piston i, to a speed-control means m. Speed-control means m may incorporate a valve whose opening varies with the input voltage. The pumps n may be used for refilling the bottle g, or pressure fluid may be supplied to the cylinder a by pumps and accumulator together. In the latter case a flow-meter p is provided whose output in the form of a voltage is also fed into speed-control means m. The bottle g may be fitted with a magnetic float and an electric induction coil to measure the rate of change of level in place of the arrangement described above.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1887061A GB937714A (en) | 1961-05-25 | 1961-05-25 | Improvements in and relating to speed control of hydraulic presses |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1887061A GB937714A (en) | 1961-05-25 | 1961-05-25 | Improvements in and relating to speed control of hydraulic presses |
Publications (1)
Publication Number | Publication Date |
---|---|
GB937714A true GB937714A (en) | 1963-09-25 |
Family
ID=10119836
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1887061A Expired GB937714A (en) | 1961-05-25 | 1961-05-25 | Improvements in and relating to speed control of hydraulic presses |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB937714A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT398942B (en) * | 1987-04-02 | 1995-02-27 | Laeis & Bucher Gmbh | DOSING DEVICE FOR DETERMINING THE DISCHARGE AND LOAD VOLUME OF THE HYDRAULIC LIQUID OF A DOSABLE ENERGY STORAGE OF A HYDRAULIC SYSTEM, IN PARTICULAR A HYDRAULIC IMPACT PRESS |
CN106723674A (en) * | 2016-12-23 | 2017-05-31 | 戴得夫 | A kind of mechanical decompressor of small-sized efficient rate |
-
1961
- 1961-05-25 GB GB1887061A patent/GB937714A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT398942B (en) * | 1987-04-02 | 1995-02-27 | Laeis & Bucher Gmbh | DOSING DEVICE FOR DETERMINING THE DISCHARGE AND LOAD VOLUME OF THE HYDRAULIC LIQUID OF A DOSABLE ENERGY STORAGE OF A HYDRAULIC SYSTEM, IN PARTICULAR A HYDRAULIC IMPACT PRESS |
CN106723674A (en) * | 2016-12-23 | 2017-05-31 | 戴得夫 | A kind of mechanical decompressor of small-sized efficient rate |
CN106723674B (en) * | 2016-12-23 | 2019-03-19 | 戴得夫 | A kind of mechanical stamping device of small-sized efficient rate |
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