ES2228725T3 - HYDRAULIC FORCE MULTIPLIER ACTUATOR. - Google Patents

HYDRAULIC FORCE MULTIPLIER ACTUATOR.

Info

Publication number
ES2228725T3
ES2228725T3 ES01124741T ES01124741T ES2228725T3 ES 2228725 T3 ES2228725 T3 ES 2228725T3 ES 01124741 T ES01124741 T ES 01124741T ES 01124741 T ES01124741 T ES 01124741T ES 2228725 T3 ES2228725 T3 ES 2228725T3
Authority
ES
Spain
Prior art keywords
actuator
pad
rod
hydraulic force
flange
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
Application number
ES01124741T
Other languages
Spanish (es)
Inventor
Fretta Roberto
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.)
OMG SRL
Original Assignee
OMG SRL
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 OMG SRL filed Critical OMG SRL
Application granted granted Critical
Publication of ES2228725T3 publication Critical patent/ES2228725T3/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/088—Characterised by the construction of the motor unit the motor using combined actuation, e.g. electric and fluid actuation
    • 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
    • F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
    • F15B11/032—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force by means of fluid-pressure converters
    • F15B11/0325—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force by means of fluid-pressure converters the fluid-pressure converter increasing the working force after an approach stroke
    • 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
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B2015/1495—Characterised by the construction of the motor unit of the straight-cylinder type with screw mechanism attached to the piston
    • 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
    • F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
    • F15B2211/216—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being pneumatic-to-hydraulic converters
    • 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
    • F15B2211/76—Control of force or torque of the output member

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Actuator (AREA)
  • Vehicle Body Suspensions (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)
  • Servomotors (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Braking Systems And Boosters (AREA)

Abstract

An hydraulic force-multiplying actuator is disclosed comprising adjustable pneumatic reaction means (60) adapted to exert a constant reaction pressure and to perform a constant-force stroke, and supplied by compressed-air supplying ducts (52); the actuator further comprises a shoulder (50) for the oil in the working area, and at least one element (11) adapted to prevent the pad of the reaction means (60) from rotating. <IMAGE>

Description

Actuador multiplicador de fuerza hidráulica.Hydraulic force multiplier actuator.

La presente invención se refiere a un actuador multiplicador de fuerza hidráulica.The present invention relates to an actuator hydraulic force multiplier.

Se conoce en la especialidad diferentes tipos de actuadores, tanto del tipo electromecánico como del tipo hidráulico, (por ejemplo, US-A-4.288.987 y PATENT ABSTRACTS OF JAPAN vol. 2000 nº 08, 6 octubre 2000 y JP 2000 141092A, 23 mayo 2000). Estas últimas han proporcionado recientemente una mejor solución desde el punto de vista de incrementar la fuerza con razones de multiplicación variables sobre su dimensionamiento. Un ejemplo de un actuador conocido permite obtener razones de multiplicación que varían desde por lo menos dos hasta un máximo de cinco veces la reacción del tornillo recirculante. Es por lo tanto posible usar tornillos en una gama constructiva de tamaños y cargas estándar y frenos de aparcamiento y funcionamiento que están dimensionados incluso solamente para 1/5 de la máxima carga proporcionada. Este tipo de actuador intensificador de fuerza electro-hidro-mecánica tiene la ventaja adicional de ser de una forma de construcción que no es como la forma de un cilindro hidráulico y es capaz de reemplazar a este último sin modificaciones excesivas en las estructuras de las máquinas existentes.Different types of actuators, both electromechanical and hydraulic type, (for example, US-A-4,288,987 and PATENT ABSTRACTS OF JAPAN vol. 2000 nº 08, October 6, 2000 and JP 2000 141092A, May 23, 2000). The latter have provided recently a better solution from the point of view of increase strength with variable multiplication ratios over its sizing. An example of a known actuator allows get multiplication ratios that vary from at least two up to five times the screw reaction recirculating It is therefore possible to use screws in a range construction of standard sizes and loads and parking brakes and operation that are sized even for 1/5 of The maximum load provided. This type of intensifier actuator electro-hydro-mechanical force It has the additional advantage of being of a construction form that It is not like the shape of a hydraulic cylinder and is capable of replace the latter without excessive modifications in the structures of existing machines.

Sin embargo, el actuador anteriormente descrito tiene dos tipos sustanciales de problemas: primeramente, está equipado con un muelle de actuación que no muestra una presión de reacción constante, sino más bien una acumulación de presión y por consiguiente no ejecuta una carrera de fuerza constante, y al cabo de un tiempo tiende a aflojar sus propias funcionalidades: adicionalmente, su sustitución, en caso de necesidad, obliga a desarmar todo el actuador, con problemas obvios de tiempo y coste. En segundo lugar, tal actuador permite realizar razones de multiplicación que no son superiores a cinco, por lo que tiene una aplicación limitada en el campo de las máquinas existentes.However, the actuator described above It has two substantial types of problems: first, it is equipped with an actuation spring that does not show a pressure of constant reaction, but rather an accumulation of pressure and by consequently it does not run a constant force race, and after all for a while it tends to loosen its own functionalities: additionally, its replacement, if necessary, requires Disassemble the entire actuator, with obvious problems of time and cost. Second, such an actuator allows for reasons of multiplication that are not greater than five, so you have a Limited application in the field of existing machines.

Es objeto de la presente invención resolver los problemas citados de la técnica anterior, proporcionando un actuador multiplicador de fuerza hidráulica que no está equipado con un muelle sino con un pistón de aire, que proporciona una presión de reacción constante y ejecuta una carrera constante; tal disposición con un pistón neumático ajustable permite además actuar sin la unidad oleodinámica que era uno de los límites del actuador anterior.It is the object of the present invention to resolve the problems cited from the prior art, providing an actuator hydraulic force multiplier that is not equipped with a spring but with an air piston, which provides a pressure of constant reaction and runs a constant run; such provision with an adjustable pneumatic piston it also allows to act without the oleodynamic unit that was one of the actuator limits previous.

Otro objeto de la presente invención es proporcionar un actuador del tipo antes mencionado que permita obtener razones de multiplicación que lleguen hasta 25, que son mucho más apropiadas para las aplicaciones de hoy en día en las máquinas.Another object of the present invention is provide an actuator of the aforementioned type that allows get multiplication ratios that reach up to 25, which are much more appropriate for today's applications in machines

Los mencionados objetos y ventajas así como otros de la invención, como se verá por la descripción que sigue, son obtenidos por un actuador hidráulico según la reivindicación 1. Realizaciones preferidas y variaciones no triviales de la presente invención son reivindicadas en las reivindicaciones dependientes.The mentioned objects and advantages as well as others of the invention, as will be seen from the description that follows, are obtained by a hydraulic actuator according to claim 1. Preferred embodiments and non-trivial variations herein invention are claimed in the claims Dependents

Se describirá mejor la presente invención por algunas realizaciones preferidas de la misma, dadas como ejemplo no limitativo, con referencia a los dibujos adjuntos, en los que su figura única 1 muestra una vista en sección transversal de la realización actualmente preferida del actuador multiplicador de la presente invención. Como se muestra en la figura 1, el actuador hidráulico de la presente invención comprende sustancialmente, como rasgo principal, medios de reacción neumáticos ajustables 60 que se componen de un pistón de aire comprimido alimentado a través de un conducto 52 y que opera sobre el cuerpo del actuador con el fin de ejercer una presión de reacción constante y ejecutar una carrera de fuerza constante. Tal pistón neumático 60 reemplaza al muelle que se usaba comúnmente en los actuadores conocidos de este tipo.The present invention will be better described by some preferred embodiments thereof, given as an example no limiting, with reference to the attached drawings, in which its single figure 1 shows a cross-sectional view of the currently preferred embodiment of the multiplier actuator of the present invention As shown in figure 1, the actuator Hydraulic of the present invention substantially comprises, as main feature, adjustable pneumatic reaction means 60 that make up of a compressed air piston fed through a duct 52 and operating on the actuator body in order to exert a constant reaction pressure and run a run of constant force Such a pneumatic piston 60 replaces the spring that is commonly used in known actuators of this type.

El actuador de la invención está equipado también con un espaldón 50 en el área de trabajo, permitiendo tal espaldón 50 que el aceite de accionamiento (suministrado a través del conducto 54) funcione en un incremento gradual en el área de trabajo con el fin de acelerar y mejorar la operabilidad del actuador.The actuator of the invention is also equipped with a 50 shoulder in the work area, allowing such a shoulder 50 than the drive oil (supplied through the conduit 54) function in a gradual increase in the work area in order to accelerate and improve the operability of the actuator.

Igualmente, el actuador de la invención puede ser equipado, a diferencia de los actuadores conocidos, con por lo menos un elemento 11 que está adaptado para impedir que la almohadilla del medio de reacción 60 gire: en la práctica, tales elementos 11 son dos y se componen de espárragos que impiden la rotación.Likewise, the actuator of the invention can be equipped, unlike known actuators, with at least an element 11 that is adapted to prevent the pad of the reaction medium 60 rotate: in practice, such elements 11 are two and consist of studs that prevent rotation.

Como se muestra con detalle en la figura 1, el actuador comprende entonces, de un modo conocido, partes componentes normales que son, en detalle, las siguientes: una almohadilla 1, un vástago 2, una cabeza 3, una camisa 4, una brida de camisa 5, un soporte de almohadilla 6, una brida de vástago 7, una brida multiplicadora 8, una camisa neumática 9, una cabeza neumática 10, un husillo 12, un espaciador 13, un espaciador interno 14, un espaciador inferior 15, una cápsula de cojinete 16, un tornillo de recirculación 18, un espaciador de tornillo 19, una brida acolchada 20, una polea arrastrada 21, un "n-pur" 22, un "nipsl 310" 23, una junta anular 4312 24, un "pt1" 25, un "t 20" 26, un "oms-mr" 27, una banda guiadora 31, un "omk-e" 32, una banda guiadora 33, un "omk-e" 34, un "pt1" 35, un "pu6" 36, una tuerca anular 37, un corteco 38, un cojinete inclinado 39, un voluta 40, una lengüeta 41, un engrasador 42, un cojinete inclinado 43, una tuerca de anillo frontal 44, un tornillo 4762 TCEI-ISO 45, casquillos picados 47, tornillos 48 y un tapón 49.As shown in detail in Figure 1, the actuator then comprises, in a known way, component parts normal that are, in detail, the following: a pad 1, a stem 2, a head 3, a shirt 4, a shirt flange 5, a pad holder 6, a rod flange 7, a flange multiplier 8, a pneumatic jacket 9, a pneumatic head 10, a spindle 12, a spacer 13, an internal spacer 14, a bottom spacer 15, a bearing capsule 16, a screw recirculation 18, a screw spacer 19, a padded flange 20, a pulley dragged 21, an "n-pur" 22, a "nipsl 310" 23, a ring seal 4312 24, a "pt1" 25, a "t 20" 26, a "oms-mr" 27, a band guiding 31, an "omk-e" 32, a guiding band 33, an "omk-e" 34, a "pt1" 35, a "pu6" 36, an annular nut 37, a cortex 38, a bearing inclined 39, a scroll 40, a tongue 41, an oiler 42, a inclined bearing 43, a front ring nut 44, a screw 4762 TCEI-ISO 45, chopped bushings 47, screws 48 and a cap 49.

El actuador de la invención encuentra su aplicación más eficiente en el campo de los prensados, y en particular en el campo del formado y corte del material, sin tener que usar tornillos ni palancas acodadas y permitiendo ejecutar ambos trabajos en una sola operación.The actuator of the invention finds its more efficient application in the field of pressing, and in particular in the field of forming and cutting the material, without having to use screws or angled levers and allowing to execute both Jobs in a single operation.

Claims (3)

1. Actuador multiplicador de fuerza hidráulica, que comprende una almohadilla (1) y un soporte de almohadilla (6) fijado a una brida (8) y a un husillo (12) de una polea arrastrada (21), estando conectada dicha polea arrastrada 21 a un tornillo de recirculación (18) que actúa sobre un vástago (2) comprendiendo una brida de vástago (7), presentando dicho vástago (2) un espaldón (50) que permite el suministro de aceite de funcionamiento a través de un conducto (54) entre una cabeza de pistón (3) conectada a una camisa de actuador (4) y dicha almohadilla (1), localizándose dicha almohadilla (1) dentro de dicha camisa (4) en movimiento relativo con respecto a ella, para operar en un incremento gradual en el área de trabajo, comprendiendo además medios de reacción neumáticos (60) compuestos de aire comprimido suministrado a través de un conducto (52) y que operan sobre el cuerpo actuador (10) o en un pistón de aire comprimido formado por dicha brida de vástago (7) con el fin de ejercer una presión de reacción.1. Hydraulic force multiplier actuator, comprising a pad (1) and a pad holder (6) fixed to a flange (8) and a spindle (12) of a pulley pulled (21), said pulley being connected 21 to a screw of recirculation (18) acting on a rod (2) comprising a rod flange (7), said rod (2) having a shoulder (50) which allows the supply of operating oil through a conduit (54) between a piston head (3) connected to a jacket of actuator (4) and said pad (1), said said pad (1) inside said shirt (4) in relative motion with respect to it, to operate in a gradual increase in the area working, including pneumatic reaction means (60) Compressed air compounds supplied through a conduit (52) and operating on the actuator body (10) or in a piston of compressed air formed by said rod flange (7) in order to exert a reaction pressure. 2. Actuador de acuerdo con la reivindicación 1, caracterizado porque está equipado también con por lo menos un elemento 11 adaptado para impedir la rotación de la almohadilla del medio de reacción (60).2. Actuator according to claim 1, characterized in that it is also equipped with at least one element 11 adapted to prevent rotation of the reaction medium pad (60). 3. Actuador de acuerdo con la reivindicación 2, caracterizado porque dichos elementos (11) son dos y se componen de espárragos que impiden la rotación.3. Actuator according to claim 2, characterized in that said elements (11) are two and are composed of studs that prevent rotation.
ES01124741T 2001-07-05 2001-10-17 HYDRAULIC FORCE MULTIPLIER ACTUATOR. Expired - Lifetime ES2228725T3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO010648 2001-07-05
IT000648A ITTO20010648A1 (en) 2001-07-05 2001-07-05 FORCE HYDRAULIC MULTIPLIER ACTUATOR.

Publications (1)

Publication Number Publication Date
ES2228725T3 true ES2228725T3 (en) 2005-04-16

Family

ID=11459018

Family Applications (1)

Application Number Title Priority Date Filing Date
ES01124741T Expired - Lifetime ES2228725T3 (en) 2001-07-05 2001-10-17 HYDRAULIC FORCE MULTIPLIER ACTUATOR.

Country Status (5)

Country Link
EP (1) EP1273805B1 (en)
AT (1) ATE278111T1 (en)
DE (1) DE60106001T2 (en)
ES (1) ES2228725T3 (en)
IT (1) ITTO20010648A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007116421A1 (en) * 2006-04-12 2007-10-18 O.M.G. S.R.L. Force-multiplying hydraulic actuator

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1777270A1 (en) * 1965-05-28 1971-04-08 Frankfurter Maschb Ag Vorm Pok Control of the pressure medium supply to a hydraulic press unit
US4288987A (en) * 1978-11-11 1981-09-15 Eugen Rapp Pneumo-hydraulic booster with rapid-traverse feature
GB2119682B (en) * 1982-04-30 1985-07-10 Cam Gears Ltd Manually controlled power assisted press
DE4236057A1 (en) * 1992-10-26 1994-04-28 Tox Pressotechnik Gmbh Distance sensor for press. converter - has immersion piston, pneumatic controller, working piston displacement detector and electronic controller
JP2000141092A (en) * 1998-11-10 2000-05-23 Enami Seiki:Kk Press machine

Also Published As

Publication number Publication date
DE60106001D1 (en) 2004-11-04
DE60106001T2 (en) 2005-11-03
EP1273805B1 (en) 2004-09-29
ITTO20010648A1 (en) 2001-10-05
EP1273805A2 (en) 2003-01-08
ATE278111T1 (en) 2004-10-15
EP1273805A3 (en) 2003-04-09

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