EP1286060A1 - Vérin avec amortissement de la vitesse du piston - Google Patents

Vérin avec amortissement de la vitesse du piston Download PDF

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Publication number
EP1286060A1
EP1286060A1 EP02102027A EP02102027A EP1286060A1 EP 1286060 A1 EP1286060 A1 EP 1286060A1 EP 02102027 A EP02102027 A EP 02102027A EP 02102027 A EP02102027 A EP 02102027A EP 1286060 A1 EP1286060 A1 EP 1286060A1
Authority
EP
European Patent Office
Prior art keywords
piston
damping
block cylinder
cylinder
cylinder according
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.)
Withdrawn
Application number
EP02102027A
Other languages
German (de)
English (en)
Inventor
Klaus Diehl
Klaus Richter
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.)
A Roemheld GmbH and Co KG
Original Assignee
A Roemheld GmbH and Co KG
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 A Roemheld GmbH and Co KG filed Critical A Roemheld GmbH and Co KG
Publication of EP1286060A1 publication Critical patent/EP1286060A1/fr
Withdrawn legal-status Critical Current

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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
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
    • F15B15/222—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having a piston with a piston extension or piston recess which throttles the main fluid outlet as the piston approaches its end position

Definitions

  • the invention relates to a block cylinder with hydraulically operated pistons and piston speed damping in the end position range.
  • Block cylinders with hydraulically operated pistons that are assigned to tools, their job is to work at high speeds on a workpiece moving up and acting on it with great pressure are special Conditions exposed. After completion of the work process, the high remains Piston speed is usually maintained and the pistons are with accelerated to the full hydraulic pressure in their end positions. This leads to high signs of wear.
  • the piston in a block cylinder in his Flow rate affect that dampening effect initially builds up slowly and then becomes fully effective at a certain point in time. This is done by recording the piston speed and piston movement and Location, with the possibility of derived data on a Control.
  • a cylinder chamber 3a; b is let into the housing 1.
  • the piston 4 is guided, the application of pressure to it Line connections 12a; b takes place.
  • the piston 4 is a piston rod 5 on one side assigned.
  • a block cylinder there are two displacement spaces 7a, b for the piston 4 educated. These displacement spaces serve to break down the hydraulic fluid, depending on the piston movement and piston speed.
  • the Dismantling takes place via a system of two drainage channels in such a way that one channel 13a; b is throttled and the other channel 11a; b can be influenced as a function of time and distance is.
  • Throttles 8a, b are assigned to displacement spaces 7. These chokes are effective directly in the throttle channels 13a; b and thus have a direct Access to the displacement rooms 7. These throttles are adjustable so that the Flow rate of the hydraulic fluid in the given time unit Is adaptable. This throttling effect can also be designed so that it can be changed during the course of an operation. This change can run according to a given program or depending on a Signal control can be made. This signal control goes from two to that Sensors assigned to block cylinders 6a; b. These sensors measure the way and the speed of the piston 4 during the operation. The of The measurement data recorded is converted into signals. The sensors can can also be used to determine the position of the pistons by the Detect the piston position and thus determine the end position of the piston enable. The position detection also allows other functions to initiate with the sensors, depending on interference, e.g. if the pistons get stuck due to defective tools.
  • a damping ring 9a; b is inserted in each displacement space 7a; b.
  • This Damping ring 9 forms between its inner surface and the piston surface a gap 10a; b.
  • Behind the gap 10 of the damping ring 9 are the direct ones Drain channels 11a; b arranged. Via these channels 11, the hydraulic fluid derived directly.
  • the throttle channels 13a; b of the throttles 8a; b are immediately in front the damping rings 9a; b arranged towards the interior of the cylinder spaces 3.
  • the Piston 4 is provided with two damping surfaces 14; 15 populated over a predetermined area of the piston form a cross-sectional thickening.
  • Fig. 2 shows a continuous piston 4 in the form of a double piston, the A piston rod 5 is assigned on each side and is therefore on both sides is operational. All functional processes within the block cylinder are identical with those of the single-acting piston.
  • Fig. 1 the functional sequence takes place by the piston 4 with pressure Line connection 12a is applied.
  • the piston 4 is thereby moved, and out of the housing 1 to the right. This is in the cylinder space 3b and Displacement 7b a pressure on the hydraulic fluid therein exercised.
  • the hydraulic fluid is led once into the drain channel 11b and derived from there.
  • part of the hydraulic fluid is already supplied via the throttle duct 13b to the throttle 8b and from there with a predetermined one Throttling, which was kept small at this time, dissipated.
  • Throttling which was kept small at this time, dissipated.
  • the throttle 8b develops its throttling effect either according to a predetermined one Program or depending on signals from the sensors 6a; b are given, depending on the data recorded for path and Piston speed. This enables time-dependent control for the Build up damping of the piston depending on the path and speed is and thus all conditions of the different mass movements and Mass accelerations recorded.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Fluid-Damping Devices (AREA)
EP02102027A 2001-08-14 2002-07-11 Vérin avec amortissement de la vitesse du piston Withdrawn EP1286060A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001139938 DE10139938A1 (de) 2001-08-14 2001-08-14 Blockzylinder mit Kolbengeschwindigkeitsdämpfung
DE10139938 2001-08-14

Publications (1)

Publication Number Publication Date
EP1286060A1 true EP1286060A1 (fr) 2003-02-26

Family

ID=7695435

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02102027A Withdrawn EP1286060A1 (fr) 2001-08-14 2002-07-11 Vérin avec amortissement de la vitesse du piston

Country Status (2)

Country Link
EP (1) EP1286060A1 (fr)
DE (1) DE10139938A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106481614A (zh) * 2016-11-03 2017-03-08 苏州盛天力离心机制造有限公司 气液阻尼缸

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1410314A (fr) * 1964-07-22 1965-09-10 Perfectionnements aux vérins hydrauliques, notamment pour la commande automatique de machines ou analogues
JPS59151605A (ja) * 1983-02-16 1984-08-30 Shiyoukuu:Kk プツシユプルケ−ブル作動用シリンダ装置
US6038956A (en) * 1998-04-02 2000-03-21 Lane; Norman Dynamic pressure regulator cushion
US6085632A (en) * 1998-01-16 2000-07-11 Festo Ag & Co. Apparatus for the damped positioning of a piston
DE19915260A1 (de) * 1999-04-03 2000-10-05 Bosch Gmbh Robert Linearantrieb

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1410314A (fr) * 1964-07-22 1965-09-10 Perfectionnements aux vérins hydrauliques, notamment pour la commande automatique de machines ou analogues
JPS59151605A (ja) * 1983-02-16 1984-08-30 Shiyoukuu:Kk プツシユプルケ−ブル作動用シリンダ装置
US6085632A (en) * 1998-01-16 2000-07-11 Festo Ag & Co. Apparatus for the damped positioning of a piston
US6038956A (en) * 1998-04-02 2000-03-21 Lane; Norman Dynamic pressure regulator cushion
DE19915260A1 (de) * 1999-04-03 2000-10-05 Bosch Gmbh Robert Linearantrieb

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 008, no. 284 (M - 348) 26 December 1984 (1984-12-26) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106481614A (zh) * 2016-11-03 2017-03-08 苏州盛天力离心机制造有限公司 气液阻尼缸

Also Published As

Publication number Publication date
DE10139938A1 (de) 2003-02-27

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