ES2016031A6 - Hydraulic circuit actuating workpiece-holder jaws in machine tools - Google Patents
Hydraulic circuit actuating workpiece-holder jaws in machine toolsInfo
- Publication number
- ES2016031A6 ES2016031A6 ES8902265A ES8902265A ES2016031A6 ES 2016031 A6 ES2016031 A6 ES 2016031A6 ES 8902265 A ES8902265 A ES 8902265A ES 8902265 A ES8902265 A ES 8902265A ES 2016031 A6 ES2016031 A6 ES 2016031A6
- Authority
- ES
- Spain
- Prior art keywords
- pressure
- valve
- subcircuit
- low
- workpiece
- 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 - Lifetime
Links
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
It comprises an inlet subcircuit which, by means of two controlled reducing valves, of high and low pressure, connected in series with a valve for selecting high/low pressure and with a valve for the closure/opening operation, conveys the active fluid to the corresponding chamber of the cylinder actuating the jaw, return taking place via a subcircuit established across the non-excited position of a first auxiliary valve which, in the excited state, is interposed in a counterpressure subcircuit which, by means of a third reducing valve, with closure at high pressure, is capable of temporarily creating an overpressure in the direction of opening the jaw, cancelling the high clamping pressure, and when this has been achieved low-pressure clamping is re-established subject to a change to the low position in the pressure- selector valve.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES8902265A ES2016031A6 (en) | 1989-06-28 | 1989-06-28 | Hydraulic circuit actuating workpiece-holder jaws in machine tools |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES8902265A ES2016031A6 (en) | 1989-06-28 | 1989-06-28 | Hydraulic circuit actuating workpiece-holder jaws in machine tools |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2016031A6 true ES2016031A6 (en) | 1990-10-01 |
Family
ID=8262778
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES8902265A Expired - Lifetime ES2016031A6 (en) | 1989-06-28 | 1989-06-28 | Hydraulic circuit actuating workpiece-holder jaws in machine tools |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES2016031A6 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101704059B (en) * | 2009-09-30 | 2011-06-15 | 浙江大学 | Hydraulic system of horizontal buffer cylinder of forging and pressing operating machine |
-
1989
- 1989-06-28 ES ES8902265A patent/ES2016031A6/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101704059B (en) * | 2009-09-30 | 2011-06-15 | 浙江大学 | Hydraulic system of horizontal buffer cylinder of forging and pressing operating machine |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 20000401 |