EP0051684B1 - Commande d'embrayage et/ou de frein d'une presse - Google Patents

Commande d'embrayage et/ou de frein d'une presse Download PDF

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Publication number
EP0051684B1
EP0051684B1 EP80106698A EP80106698A EP0051684B1 EP 0051684 B1 EP0051684 B1 EP 0051684B1 EP 80106698 A EP80106698 A EP 80106698A EP 80106698 A EP80106698 A EP 80106698A EP 0051684 B1 EP0051684 B1 EP 0051684B1
Authority
EP
European Patent Office
Prior art keywords
pressure
clutch
brake
case
cylinder
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
Application number
EP80106698A
Other languages
German (de)
English (en)
Other versions
EP0051684A1 (fr
Inventor
Heinz Weber
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.)
L Schuler GmbH
Original Assignee
L Schuler GmbH
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 L Schuler GmbH filed Critical L Schuler GmbH
Priority to EP80106698A priority Critical patent/EP0051684B1/fr
Priority to AT80106698T priority patent/ATE6231T1/de
Priority to DE8080106698T priority patent/DE3066630D1/de
Priority to BR8106922A priority patent/BR8106922A/pt
Priority to ES506709A priority patent/ES8206273A1/es
Publication of EP0051684A1 publication Critical patent/EP0051684A1/fr
Application granted granted Critical
Publication of EP0051684B1 publication Critical patent/EP0051684B1/fr
Priority to US06/664,254 priority patent/US4580674A/en
Expired legal-status Critical Current

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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
    • B30B15/14—Control arrangements for mechanically-driven presses
    • B30B15/142—Control arrangements for mechanically-driven presses controlling the brake or the clutch

Definitions

  • the invention relates to a control for the clutch and / or brake on the main drive shaft of a press, in which a clutch cylinder or a brake cylinder counteracting the braking force until reaching the desired speed (operating speed or standstill) optionally by means of at least one valve, the can be controlled before reaching the desired speed (operating speed or standstill), at least two different pressures can be applied, one of which is at least approximately the maximum clutch pressure or the at least approximately pressure relief and the other is a partial pressure that is above the response pressure of the clutch or is below the back pressure canceling the response pressure of the brake.
  • the object of the invention is therefore to avoid this hard transition and its consequences by a softer transition to the desired speed (operating speed or standstill) without having to put up with an unacceptable delay in the entire coupling or braking process.
  • the solution to this problem according to the invention is based on the principle of temporarily adjusting the partial pressure during the period of time which includes reaching the desired speed (operating speed or standstill).
  • the solution to the problem mentioned is that the pressure during clutch or braking after reaching an intermediate pressure, which in the case of the clutch is between a value of at least 40% above the partial pressure and the maximum clutch pressure and in If the brake is between a value of at least 40% below the partial pressure and full pressure relief, before the desired speed (operating speed or standstill) is reached on the partial pressure for a period of time extending at least until the desired speed (operating speed or standstill) is reached is switchable.
  • the clutch or brake responds quickly at the start of the process and a high clutch or brake torque builds up quickly.
  • the subsequent changeover to the lower (clutch) or higher (brake) partial pressure leads to a decrease in the clutch or braking torque until the desired speed (operating speed or standstill) is reached, which results in the desired softer transition.
  • at least approximately the maximum clutch pressure or the at least approximately pressure relief is to be set again so that the full clutch torque is available for the operation of the press or the full braking torque for holding the ram and its drive elements.
  • the switching between the different pressures is not without inertia, that is, by leaps and bounds. It may also be expedient to carry out the switchovers in stages, for example from the intermediate pressure to the partial pressure.
  • the controller expediently contains a time control device which responds to speed, angle, time or pressure and during which the partial pressure is effective.
  • the action of the time control device and its switch-on time are to be dimensioned so that the desired speed (operating speed or standstill) is reached while the partial pressure is effective.
  • the switchovers between the different pressures can be carried out with smooth transitions, so that the vibrations that occur are kept to a minimum.
  • the control according to the invention can also be used with the same effects in a press, on the main drive shaft of a known clutch-brake combination (DE-PS 1207725) is provided, in which a cylinder simultaneously forms the clutch and the brake cylinder in which a piston, which alternately influences the clutch and the brake, is guided.
  • a known clutch-brake combination DE-PS 1207725
  • FIGS. 1 to 3 are diagrams of the course of the pressure p, the speed n and the Mo. mentes M over time t and in FIGS. 4 to 6 the controls themselves are shown schematically, with FIGS. 1 and 4 relating to a clutch, FIGS. 2 and 5 relating to a brake, FIGS. 3 and 6 relating to a clutch brake Combination.
  • the response pressure is represented by the horizontal line pA.
  • an intermediate pressure pZ is first controlled, whereby a quicker Increases the clutch or braking torque M to a relatively high value.
  • the subsequent changeover to a partial pressure pT leads to a drop in the clutch or braking torque M to a lower value, which is maintained until the desired speed n (operating speed or standstill) is reached, which results in the desired effect of a softer transition results in the target speed n (operating speed or standstill).
  • the pressure p is then switched to the maximum clutch pressure pM or pressure relief p0.
  • a pressure medium source consisting of a pressure medium delivery 1 and a pressure medium accumulator 2 is provided, which is connected via a pressure reducing valve 3 and a (conventional) press safety valve 4 to a cylinder in which a piston is guided.
  • the pressure reducing valve 3 is under the influence of a time control device or a program control (not shown in the drawing).
  • a clutch piston 6 is guided in the clutch cylinder 5, on which a compression spring 7 acts in the opening direction of the clutch and which influences the clutch in the closing direction via a piston rod 8.
  • a brake piston 10 is guided in the brake cylinder 9, on which a compression spring 11 acts in the closing direction of the brake and which influences the brake in the opening direction via a piston rod 12.
  • a clutch and brake piston 14 is guided in the cylinder 13, which also forms the clutch and the brake cylinder, on which a compression spring 15 acts in the opening direction of the clutch and at the same time in the closing direction of the brake and which is provided on both sides with a piston rod.
  • the piston rod 16 on the cylinder chamber side influences the brake in the opening direction
  • the piston rod 17 on the spring side influences the clutch in the closing direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Presses (AREA)
  • Braking Arrangements (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Regulating Braking Force (AREA)

Claims (4)

1. Commande pour l'embrayage et/ou le frein sur l'arbre principal d'une presse, comprenant un vérin ou cylindre d'embrayage (5) respectivement un cylindre de frein (9) s'opposant à l'effort de freinage, auquel peuvent être appliquées sélectivement au moins deux pressions différentes, jusqu'à l'instant où la vitesse de rotation de service ou l'arrêt désiré n est atteint, par au moins une soupape (3) commandée avant cet instant, l'une de ces pressions correspondant au moins approximativement à la pression maximale d'embrayage pM ou à la détente au moins à peu près complète pO et l'autre étant une pression partielle pT supérieure à la pression de réponse pA de l'embrayage ou inférieure à la contre-pression annulant la pression de réponse pA du frein, caractérisée en ce que, pendant l'opération d'embrayage ou de freinage, après avoir atteint une pression intermédiaire pZ, la pression appliquée p est amenée à la pression partielle pT, avant que la vitesse de service ou l'arrêt n ne soit obtenu, et y est maintenue pendant un laps de temps qui dure au moins jusqu'à ce que cette vitesse ou l'arrêt soit obtenu, la pression intermédiaire pZ étant comprise entre une valeur d'au moins 40% au-dessus de la pression partielle pT et la pression maximale d'embrayage pM dans le cas d'une opération d'embrayage et entre une valeur d'au moins 40% au-dessous de la pression partielle pT et la détente complète pO dans le cas d'une opération de freinage.
2. Commande selon la revendication 1, caractérisée en ce qu'elle comporte un appareil de commande dans le temps, actionné par une vitesse ou un angle de rotation ou en fonction du temps ou de la pression, pendant la durée d'enclenchement duquel la pression partielle pT est appliquée.
3. Commande selon la revendication 1, caractérisée en ce que le cylindre d'embrayage (5) ou le cylindre de frein (9) est précédé d'une soupape réductrice de pression (3) à action proportionelle, qui applique les pressions p conformément à une commande programmée.
4. Application de la commande selon une des revendications précédentes à un combiné embrayage-frein prévu sur l'arbre principal d'une presse et dans lequel un cylindre (13) forme à la fois le cylindre d'embrayage et le cylindre de frein, dans lequel est guidé un piston (14) qui agit alternativement sur l'embrayage et sur le frein.
EP80106698A 1980-10-31 1980-10-31 Commande d'embrayage et/ou de frein d'une presse Expired EP0051684B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP80106698A EP0051684B1 (fr) 1980-10-31 1980-10-31 Commande d'embrayage et/ou de frein d'une presse
AT80106698T ATE6231T1 (de) 1980-10-31 1980-10-31 Steuerung fuer die kupplung und/oder bremse einer presse.
DE8080106698T DE3066630D1 (en) 1980-10-31 1980-10-31 Control for the clutch and/or the brake of a press
BR8106922A BR8106922A (pt) 1980-10-31 1981-10-27 Comando para o acoplamento e/ou frenagem de uma prensa
ES506709A ES8206273A1 (es) 1980-10-31 1981-10-30 Disposicion de control para el embrague y-o freno en el ar- bol de propulsion principal de una prensa
US06/664,254 US4580674A (en) 1980-10-31 1984-10-24 Control arrangement for the actuating pressure applied to a clutch and/or brake of a mechanical press

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP80106698A EP0051684B1 (fr) 1980-10-31 1980-10-31 Commande d'embrayage et/ou de frein d'une presse

Publications (2)

Publication Number Publication Date
EP0051684A1 EP0051684A1 (fr) 1982-05-19
EP0051684B1 true EP0051684B1 (fr) 1984-02-15

Family

ID=8186867

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80106698A Expired EP0051684B1 (fr) 1980-10-31 1980-10-31 Commande d'embrayage et/ou de frein d'une presse

Country Status (6)

Country Link
US (1) US4580674A (fr)
EP (1) EP0051684B1 (fr)
AT (1) ATE6231T1 (fr)
BR (1) BR8106922A (fr)
DE (1) DE3066630D1 (fr)
ES (1) ES8206273A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3523163A1 (de) * 1984-07-19 1986-02-13 ZF-Herion-Systemtechnik GmbH, 7990 Friedrichshafen Druckbeeinflussungseinrichtung fuer eine hydraulisch betaetigbare kupplung und/oder bremse der antriebswelle einer presse
US5291977A (en) * 1992-07-27 1994-03-08 Midwest Brake Bond Co. Electrically actuated clutch brake apparatus
US5487458A (en) * 1993-11-03 1996-01-30 Midwest Brake Bond Company Electrically energized oil shear drive system
ES2110332B1 (es) * 1994-02-07 1998-08-01 Coop Goizper S Mejoras en frenos-embrague hidraulicos.
EP0757761B1 (fr) * 1994-05-13 2001-10-24 Midwest Brake Bond Co. Entrainement de presse dote d'une combinaison embrayage/frein a l'huile
US5651436A (en) * 1995-04-20 1997-07-29 Midwest Brake Bond Company Brake and clutch control system
US5680915A (en) * 1996-01-31 1997-10-28 Midwest Brake Bond Company Brake and clutch control system
DE19831144A1 (de) * 1998-07-11 2000-01-13 Mannesmann Rexroth Ag Hydraulische Steuerung für eine hydraulisch betätigbare Kupplungsbremskombination für die Antriebswelle einer mechanischen Presse
EP1211059B1 (fr) * 2000-12-02 2006-08-16 Bosch Rexroth AG Commande hydraulique pour combinaison embrayage-frein à actionnement hydraulique en particulier pour l'arbre excentrique d'une presse mécanique
DE102006050300B4 (de) * 2006-10-23 2013-05-08 Ortlinghaus-Werke Gmbh Druckmittelbetätigte Schaltung

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2734609A (en) * 1956-02-14 Pneumatic clutch control
US2635727A (en) * 1948-08-06 1953-04-21 Minster Machine Co Adjusting mechanism for control devices
US2911080A (en) * 1955-10-10 1959-11-03 Bliss E W Co Overload clutch
DE1207725C2 (de) * 1961-11-09 1973-07-19 Ortlinghaus O H G Geb Kombinierte druckmittelbetaetigte Kupplungs- und Bremsvorrichtung
US3200917A (en) * 1963-05-14 1965-08-17 Ortlinghaus Geb Air cooled compact clutch and brake
DE1777421A1 (de) * 1965-01-05 1974-07-04 Schuler Gmbh L Druckluftbetaetigte reibungskupplung fuer pressen
DE1502319A1 (de) * 1965-01-05 1969-04-10 Schuler Gmbh L Pressenkupplung
DE1777422A1 (de) * 1965-01-05 1974-07-04 Schuler Gmbh L Druckluftbetaetigte reibungskupplung fuer pressen
GB1121376A (en) * 1966-03-04 1968-07-24 Schuler G M B H L Improvements in or relating to presses
DE2308192A1 (de) * 1973-02-20 1974-08-29 Schuler Gmbh L Kupplung und bremse einer mechanisch angetriebenen presse

Also Published As

Publication number Publication date
BR8106922A (pt) 1982-07-13
DE3066630D1 (en) 1984-03-22
US4580674A (en) 1986-04-08
ES506709A0 (es) 1982-08-16
ATE6231T1 (de) 1984-03-15
EP0051684A1 (fr) 1982-05-19
ES8206273A1 (es) 1982-08-16

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