EP1036634A2 - Dispositif pour monter un piston avec segments de piston serrants vers l'extérieur dans un cylindre - Google Patents

Dispositif pour monter un piston avec segments de piston serrants vers l'extérieur dans un cylindre Download PDF

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Publication number
EP1036634A2
EP1036634A2 EP00103215A EP00103215A EP1036634A2 EP 1036634 A2 EP1036634 A2 EP 1036634A2 EP 00103215 A EP00103215 A EP 00103215A EP 00103215 A EP00103215 A EP 00103215A EP 1036634 A2 EP1036634 A2 EP 1036634A2
Authority
EP
European Patent Office
Prior art keywords
piston
piston rings
shells
segments
rings
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Withdrawn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
EP00103215A
Other languages
German (de)
English (en)
Other versions
EP1036634A3 (fr
Inventor
Hans-Joachim Risch
Hans-Rainer Dipl.-Phys. Briller
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.)
Federal Mogul Burscheid GmbH
Original Assignee
Federal Mogul Burscheid 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 Federal Mogul Burscheid GmbH filed Critical Federal Mogul Burscheid GmbH
Publication of EP1036634A2 publication Critical patent/EP1036634A2/fr
Publication of EP1036634A3 publication Critical patent/EP1036634A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/12—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same mounting or demounting piston rings

Definitions

  • the invention relates to a device for mounting pistons with radially outward exciting piston rings in cylinders, especially internal combustion engines, by means of one encompassing the piston rings and consisting of at least two segments Clamping body.
  • Mounting bushes are known which are designed as tubular bodies, the inner surface being slightly conical.
  • Such an assembly bushing can be found in DE 21 55 998.
  • the mounting bush is placed on the engine block and the piston is pushed through the bush together with the piston rings. In this way, both axial and radial forces act on the piston rings.
  • the piston rings are damaged if the rings are located eccentrically in the piston ring groove and have a small wall thickness. With such a constellation, the rings are bent or even break when pressed through the assembly bushing.
  • devices are known which consist of ring halves connected to one another and are designed as a tensioning band.
  • German utility model 1728 262 discloses a tensioning band which is placed around the piston and is firmly attached to the piston by means of a locking device. To install the piston in the cylinder bore, the lock must first be released so that the piston can be pressed through the tension band. This design is not suitable for automated large series applications.
  • the invention has for its object to securely fix piston rings with large ring spread and low axial height in the annular groove of a piston, so that the piston can be inserted into the corresponding cylinder bore together with the rings by means of an automatic machine.
  • This object is achieved by the features of claim 1.
  • Advantageous embodiments of the invention are documented in the subclaims.
  • the clamping body according to the invention is designed so that it fixes the piston rings in the piston only by radial spring force. It is sufficient that the spring force is only slightly greater than the tangential force of the piston rings, ie the force of the piston rings which is outwardly exciting. In this way, the piston rings are clamped together to a block, ie without a backlash.
  • the device serves not only as an assembly device but also as a transport device for the piston-piston ring system. In contrast to the previous procedure, the pistons equipped with piston rings can be transported with tensioned piston rings to the assembly line of the engine manufacturer.
  • tensioning body Since the tensioning body is only held on the piston by spring force, it is possible to place the complete system of tensioning body, piston and piston rings from an automatic machine on the engine block of the internal combustion engine and to press it through the tensioning body into the cylinder bore without pressure that the clamping body must be released.
  • the clamping body 1 shown in Figure 1 consists of two half-shells 2, 2 '.
  • the half-shells 2, 2 'each have a flange 4, 5, in which screws 3 extend.
  • the flange 4 has a thread 6 and the flange 5 has a bore 7 with a diameter which is selected so that the screw 3 can be carried out with play.
  • a spring 8 is provided, which exerts a compressive force on the half-shell 2 'when the screw 3 is tightened, so that the half-shells 2, 2' bear under spring force on the piston to be assembled.
  • the spring force is set so that the tangential force of the piston rings to be fixed is exceeded.
  • FIG. 2 shows a piston 9 with an attached clamping body 1.
  • the piston 9 has a total of 3 piston rings 10, 10 ', 10' ', which are centered in by means of the half-shells 2, 2' the grooves are fixed.
  • the piston is inserted into the cylinder bore 11 with its shaft used and that until the lower edge 12 of the half shells on the engine block 13th lies on.
  • the piston crown 14 By pressing on the piston crown 14, the piston 9 is in the Cylinder bore 11 pressed without the half-shells 2, 2 'having to be loosened.
  • the clamping body 1 or the half-shells 2, 2 ' can be recycled to the Suppliers are sent back using this device as a transport device can use.
  • the pistons equipped with piston rings can be fitted with the clamping body be transported to the engine manufacturer. This unit can then be of an automatic assembly machine can be transported and installed safely.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Actuator (AREA)
EP00103215A 1999-03-18 2000-02-17 Dispositif pour monter un piston avec segments de piston serrants vers l'extérieur dans un cylindre Withdrawn EP1036634A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19912166 1999-03-18
DE1999112166 DE19912166C2 (de) 1999-03-18 1999-03-18 Montagewerkzeug zum Montieren von Kolben mit radial nach außen spannenden Kolbenringen in Zylindern

Publications (2)

Publication Number Publication Date
EP1036634A2 true EP1036634A2 (fr) 2000-09-20
EP1036634A3 EP1036634A3 (fr) 2002-08-21

Family

ID=7901484

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00103215A Withdrawn EP1036634A3 (fr) 1999-03-18 2000-02-17 Dispositif pour monter un piston avec segments de piston serrants vers l'extérieur dans un cylindre

Country Status (2)

Country Link
EP (1) EP1036634A3 (fr)
DE (1) DE19912166C2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106736877A (zh) * 2016-12-08 2017-05-31 常州中车柴油机零部件有限公司 一种哈夫套及采用其的活塞环开口内沉量的加工控制方法
CN108481259A (zh) * 2018-06-19 2018-09-04 泰州市铧颐特种装备有限公司 一种自调式活塞销顶出器
CN108747970A (zh) * 2018-08-30 2018-11-06 江西五十铃发动机有限公司 一种开合活塞入缸孔工装
CN110303454A (zh) * 2019-07-20 2019-10-08 单春旺 一种汽车活塞环快速安装装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005003072B4 (de) * 2005-01-22 2007-06-28 Daimlerchrysler Ag Verfahren zum Einbau eines Kolbens in eine Zylinderbohrung und ein Kolben hierzu
US8640314B2 (en) 2010-08-03 2014-02-04 Federal-Mogul Corporation Piston assembly transportation and installation apparatus and methods of transporting and installing a piston assembly therewith

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE201824C (fr) *
US1597926A (en) * 1923-01-12 1926-08-31 Henry R Seifert Apparatus for use in forming piston rings
US1500189A (en) * 1923-06-22 1924-07-08 Frederick W Graf Piston-ring compressor
CH134526A (de) * 1928-06-12 1929-07-31 Leutwyler Ad Vorrichtung zum Einführen von Kolben mit Kolbenringen in den Zylinder.
CH125537A (de) * 1928-06-12 1928-04-16 Ad Leutwyler Vorrichtung zum Einführen von Kolben mit Kolbenringen in den Zylinder.
DE491446C (de) * 1928-07-17 1930-02-10 Adolf Leutwyler Vorrichtung zum Einfuehren von Kolben mit Kolbenringen in Zylinder
DE1728262U (de) * 1954-05-07 1956-08-16 Auto Union Gmbh Spannband fuer kolbenringe.
US3707027A (en) * 1970-11-12 1972-12-26 Sealed Power Corp Loading sleeve for installing a piston and ring assembly into a cylinder bore

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106736877A (zh) * 2016-12-08 2017-05-31 常州中车柴油机零部件有限公司 一种哈夫套及采用其的活塞环开口内沉量的加工控制方法
CN106736877B (zh) * 2016-12-08 2019-08-27 常州中车柴油机零部件有限公司 一种哈夫套及采用其的活塞环开口内沉量的加工控制方法
CN108481259A (zh) * 2018-06-19 2018-09-04 泰州市铧颐特种装备有限公司 一种自调式活塞销顶出器
CN108747970A (zh) * 2018-08-30 2018-11-06 江西五十铃发动机有限公司 一种开合活塞入缸孔工装
CN108747970B (zh) * 2018-08-30 2023-11-03 江西五十铃发动机有限公司 一种开合活塞入缸孔工装
CN110303454A (zh) * 2019-07-20 2019-10-08 单春旺 一种汽车活塞环快速安装装置
CN110303454B (zh) * 2019-07-20 2021-04-09 胡彩云 一种汽车活塞环快速安装装置

Also Published As

Publication number Publication date
DE19912166A1 (de) 2000-09-28
EP1036634A3 (fr) 2002-08-21
DE19912166C2 (de) 2001-05-31

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