FR2450368A1 - Pressure servo control for machine tools - has electrically controlled pressure limiter providing steady pressure set between extreme supply levels - Google Patents

Pressure servo control for machine tools - has electrically controlled pressure limiter providing steady pressure set between extreme supply levels

Info

Publication number
FR2450368A1
FR2450368A1 FR7905335A FR7905335A FR2450368A1 FR 2450368 A1 FR2450368 A1 FR 2450368A1 FR 7905335 A FR7905335 A FR 7905335A FR 7905335 A FR7905335 A FR 7905335A FR 2450368 A1 FR2450368 A1 FR 2450368A1
Authority
FR
France
Prior art keywords
pressure
electrically controlled
limiter
servo control
machine tools
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.)
Granted
Application number
FR7905335A
Other languages
French (fr)
Other versions
FR2450368B1 (en
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.)
Renault SAS
Original Assignee
Renault SAS
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 Renault SAS filed Critical Renault SAS
Priority to FR7905335A priority Critical patent/FR2450368A1/en
Publication of FR2450368A1 publication Critical patent/FR2450368A1/en
Application granted granted Critical
Publication of FR2450368B1 publication Critical patent/FR2450368B1/fr
Granted 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
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • 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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/08—Servomotor systems incorporating electrically operated control 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40507—Flow control characterised by the type of flow control means or valve with constant throttles or orifices
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50554—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure downstream of the pressure control means, e.g. pressure reducing valve
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5158—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a pressure source and an output member
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/52—Pressure control characterised by the type of actuation
    • F15B2211/528—Pressure control characterised by the type of actuation actuated by fluid pressure
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/55—Pressure control for limiting a pressure up to a maximum pressure, e.g. by using a pressure relief valve
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/57—Control of a differential pressure
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/605—Load sensing circuits
    • F15B2211/6051—Load sensing circuits having valve means between output member and the load sensing circuit
    • F15B2211/6055—Load sensing circuits having valve means between output member and the load sensing circuit using pressure relief valves
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7053—Double-acting output members

Abstract

The pressure control includes a three line pressure reducer (6) which may not be externally controlled, and a pressure limiter (12) with external control. There is also a servo pressure limiter (16) which is electrically controlled (17). The pressure control is connected to an external pressure source (Po) by a line (31) and to a return (32), and to the component to be operated e.g. a double acting piston (3) - by two channels (4, 5). The three line pressure reducer (6) is connected to the pressure supply channel (31) by the inlet (7) and the load by its opening (8). The return (9) and drain (10) openings are connected to the inlet opening (11) of the controllable pressure limiter (12). The outlet opening of the limiter is connected to the return channel (32). The control opening is connected to the inlet opening (15) of the electrically controlled servo-limiter. The device provides an electrically controlled hydraulic pressure at a steady level between low and high reference pressure levels.
FR7905335A 1979-03-01 1979-03-01 Pressure servo control for machine tools - has electrically controlled pressure limiter providing steady pressure set between extreme supply levels Granted FR2450368A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7905335A FR2450368A1 (en) 1979-03-01 1979-03-01 Pressure servo control for machine tools - has electrically controlled pressure limiter providing steady pressure set between extreme supply levels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7905335A FR2450368A1 (en) 1979-03-01 1979-03-01 Pressure servo control for machine tools - has electrically controlled pressure limiter providing steady pressure set between extreme supply levels

Publications (2)

Publication Number Publication Date
FR2450368A1 true FR2450368A1 (en) 1980-09-26
FR2450368B1 FR2450368B1 (en) 1982-04-23

Family

ID=9222633

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7905335A Granted FR2450368A1 (en) 1979-03-01 1979-03-01 Pressure servo control for machine tools - has electrically controlled pressure limiter providing steady pressure set between extreme supply levels

Country Status (1)

Country Link
FR (1) FR2450368A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0249797A2 (en) * 1986-06-13 1987-12-23 Armaturenfabrik Hermann Voss GmbH + Co. Pressure-regulating valve

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1036702A (en) * 1961-08-22 1966-07-20 Whitworth Gloster Aircraft Ltd Improvements in or relating to fluid pressure control valves
FR1472397A (en) * 1965-03-11 1967-03-10 Buehler Ag Geb Electro-hydraulic pressure regulating valve
FR2079203A1 (en) * 1970-02-03 1971-11-12 Nissan Motor
FR2106299A5 (en) * 1970-09-11 1972-04-28 Koppen Lethem Trading Co

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1036702A (en) * 1961-08-22 1966-07-20 Whitworth Gloster Aircraft Ltd Improvements in or relating to fluid pressure control valves
FR1472397A (en) * 1965-03-11 1967-03-10 Buehler Ag Geb Electro-hydraulic pressure regulating valve
FR2079203A1 (en) * 1970-02-03 1971-11-12 Nissan Motor
FR2106299A5 (en) * 1970-09-11 1972-04-28 Koppen Lethem Trading Co

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/72 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0249797A2 (en) * 1986-06-13 1987-12-23 Armaturenfabrik Hermann Voss GmbH + Co. Pressure-regulating valve
EP0249797A3 (en) * 1986-06-13 1989-09-13 Armaturenfabrik Hermann Voss Gmbh & Co. Pressure-regulating valve

Also Published As

Publication number Publication date
FR2450368B1 (en) 1982-04-23

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Legal Events

Date Code Title Description
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