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EP0280944A1 - Vérin - Google Patents

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Publication number
EP0280944A1
EP0280944A1 EP88102041A EP88102041A EP0280944A1 EP 0280944 A1 EP0280944 A1 EP 0280944A1 EP 88102041 A EP88102041 A EP 88102041A EP 88102041 A EP88102041 A EP 88102041A EP 0280944 A1 EP0280944 A1 EP 0280944A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
piston rod
braking device
cylinder according
guide rods
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
EP88102041A
Other languages
German (de)
English (en)
Other versions
EP0280944B1 (fr
Inventor
Klaus Dr. Ing. Denker
Oskar Dr. Ing. Peter
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0280944A1 publication Critical patent/EP0280944A1/fr
Application granted granted Critical
Publication of EP0280944B1 publication Critical patent/EP0280944B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F15B15/02—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member

Definitions

  • the invention relates to a cylinder according to the preamble of the main claim.
  • the cylinder tube and the guide rods connected to one another via the yoke are fastened or guided on a short, U-shaped guide unit, as a result of which the load spacing is large and the load on the bearings becomes high.
  • the braking device has a large installation cross section, acts eccentrically on the piston rod with metallic contact surfaces and is relatively complex, which makes it expensive and voluminous and does not allow the braking effect to be metered in a controllable manner.
  • the working cylinder according to the invention with the characterizing features of the main claim has the advantage that the guide unit is very powerful and relatively light, which makes the working cylinder easier and lighter.
  • the brake is direction very compact, simple and self-centering and can be arranged, for example, in a very convenient manner between the cylinders receiving the guide rods.
  • FIG. 1 shows a plan view with a partial section through a working cylinder
  • FIG. 2 shows a section along II-II according to FIG. 1
  • FIG. 3 shows a modification of the exemplary embodiment according to FIG. 1.
  • 10 denotes a guide unit which consists of two cylinders 11, 12 which run parallel to one another and which are connected to one another by a transverse web 13, as a result of which the guide unit is given the shape of an H.
  • the cylinder head 14 of a working cylinder 15 is fastened, the other end of which is closed by a cover 16.
  • a double-acting piston which is not shown in any more detail, is guided in a tightly sliding manner, the piston rod 17 of which extends outwards between the cylinders 11 and 12 parallel to these.
  • a coupling 19 is screwed, which is connected to a yoke 20.
  • a guide rod 21 or 22 is attached, which are guided in bores of the cylinders 11, 12, for. B. in plain or ball bearings.
  • the coupling 19 is connected to the yoke 20 with radial play in order to absorb influences of movement between the piston rod and guide rods or to keep them away from the piston rod.
  • Such influences of movement can come, for example, from a load which is attached to the free end face of the yoke 20.
  • the braking device 24 can be seen in particular from FIG. 2.
  • the braking device is accommodated in a cuboid housing 25 and consists of a plurality of segments 26, the inner sides of which rest against the piston rod 17 and the outer sides of which form a circular cylinder against which a rubber sleeve 27 rests. Between this and the inner periphery 25A of the housing 25, an annular space 28 is formed, which can be acted upon by a pressure medium through a bore 29. The pressure medium then presses on the rubber sleeve 27, which presses the segments 26, which are made of a brake material, onto the piston rod 17 and brakes them.
  • the housing 25 of the braking device is fastened to the web 13 by means of a flange 30 and by means of screws 31, 32, specifically on the opposite side of the cylinder head 14.
  • the braking device it is otherwise constructed exactly as described above — is attached to the free end of the cylinder tube 15 or to its cover 16.
  • the piston rod 17 passes through the cover 16 and also penetrates through the braking device to the outside.
  • the design of the braking device described enables a large-area rubber sleeve which transmits a high force to the segments 26 and thus a high braking force to the piston rod;
  • the position of the segments is determined by the housing and a stop 33, which is designed as a cover and closes the housing 25.
  • Such a brake unit also has the further advantages that it is self-centering with respect to the piston rod 17 and therefore does not need to be adjusted, furthermore that it acts on the piston rod with large-area brake segments and thus keeps the surface pressure low. On the one hand, this does not damage the piston rod, and on the other hand, high-quality brake materials create little wear.
  • the brake unit is not self-locking, so that an effect proportional to the pressure is achieved, which is a prerequisite for an easily controllable braking process.
  • the working cylinder described with its additional device has a modular structure and in this way enables the expansion of working cylinders into positioning guide units without this modular structure causing disadvantages in terms of increased space requirements. It is also particularly suitable for mounting a displacement sensor, e.g. B. on one of the two guide rods 21, 22nd

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Braking Arrangements (AREA)
EP88102041A 1987-03-05 1988-02-12 Vérin Expired - Lifetime EP0280944B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8703310U DE8703310U1 (de) 1987-03-05 1987-03-05 Arbeitszylinder
DE8703310U 1987-03-05

Publications (2)

Publication Number Publication Date
EP0280944A1 true EP0280944A1 (fr) 1988-09-07
EP0280944B1 EP0280944B1 (fr) 1990-05-09

Family

ID=6805474

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88102041A Expired - Lifetime EP0280944B1 (fr) 1987-03-05 1988-02-12 Vérin

Country Status (2)

Country Link
EP (1) EP0280944B1 (fr)
DE (2) DE8703310U1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4230781A1 (de) * 1992-09-15 1994-03-17 Christian Dipl Ing Boehner Linearmodul für Handling-Systeme
ITPD20130023A1 (it) * 2013-01-31 2014-08-01 Vesta Automation Srl Unita' di guida per cilindri

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3820337A1 (de) * 1988-06-15 1989-12-21 Expert Maschbau Kolben-zylinder-einheit mit gegen verdrehung gesicherter kolbenstange

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1552859A1 (de) * 1966-03-11 1970-01-29 Blatt Leland F Vorrichtung fuer die Lageanordnung und Betaetigen eines Werkzeughalters
US3788196A (en) * 1971-08-09 1974-01-29 Ultramation Inc Linear thruster
FR2456268A1 (fr) * 1979-05-08 1980-12-05 Bruay Ind Dispositif de guidage notamment pour verin
EP0124727A2 (fr) * 1983-04-06 1984-11-14 Robert Bosch Gmbh Cylindre de travail
DE3323962A1 (de) * 1983-07-02 1985-01-03 Albert Ing.(grad.) 2800 Bremen Zimmer Verdrehsicherung an druckmittelbetriebenen arbeitszylindern

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1552859A1 (de) * 1966-03-11 1970-01-29 Blatt Leland F Vorrichtung fuer die Lageanordnung und Betaetigen eines Werkzeughalters
US3788196A (en) * 1971-08-09 1974-01-29 Ultramation Inc Linear thruster
FR2456268A1 (fr) * 1979-05-08 1980-12-05 Bruay Ind Dispositif de guidage notamment pour verin
EP0124727A2 (fr) * 1983-04-06 1984-11-14 Robert Bosch Gmbh Cylindre de travail
DE3323962A1 (de) * 1983-07-02 1985-01-03 Albert Ing.(grad.) 2800 Bremen Zimmer Verdrehsicherung an druckmittelbetriebenen arbeitszylindern

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4230781A1 (de) * 1992-09-15 1994-03-17 Christian Dipl Ing Boehner Linearmodul für Handling-Systeme
ITPD20130023A1 (it) * 2013-01-31 2014-08-01 Vesta Automation Srl Unita' di guida per cilindri

Also Published As

Publication number Publication date
DE8703310U1 (de) 1988-06-30
EP0280944B1 (fr) 1990-05-09
DE3860135D1 (de) 1990-06-13

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