EP0374407B1 - Verfahren zum Festlegen - Google Patents

Verfahren zum Festlegen Download PDF

Info

Publication number
EP0374407B1
EP0374407B1 EP89119114A EP89119114A EP0374407B1 EP 0374407 B1 EP0374407 B1 EP 0374407B1 EP 89119114 A EP89119114 A EP 89119114A EP 89119114 A EP89119114 A EP 89119114A EP 0374407 B1 EP0374407 B1 EP 0374407B1
Authority
EP
European Patent Office
Prior art keywords
pressure
operating
regions
portions
seals
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
EP89119114A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0374407A3 (de
EP0374407A2 (de
Inventor
Helmut Swars
Wolfgang Maus
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.)
Vitesco Technologies Lohmar Verwaltungs GmbH
Original Assignee
Emitec Gesellschaft fuer Emissionstechnologie mbH
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 Emitec Gesellschaft fuer Emissionstechnologie mbH filed Critical Emitec Gesellschaft fuer Emissionstechnologie mbH
Publication of EP0374407A2 publication Critical patent/EP0374407A2/de
Publication of EP0374407A3 publication Critical patent/EP0374407A3/de
Application granted granted Critical
Publication of EP0374407B1 publication Critical patent/EP0374407B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/06—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes in openings, e.g. rolling-in
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/84—Making other particular articles other parts for engines, e.g. connecting-rods
    • B21D53/845—Making camshafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/08—Tube expanders
    • B21D39/20—Tube expanders with mandrels, e.g. expandable
    • B21D39/203—Tube expanders with mandrels, e.g. expandable expandable by fluid or elastic material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49805—Shaping by direct application of fluent pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49938—Radially expanding part in cavity, aperture, or hollow body
    • Y10T29/4994—Radially expanding internal tube
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53996—Means to assemble or disassemble by deforming

Definitions

  • the invention relates to a method for determining drive or coupling elements - such as cams, gears, crank webs - or of bearing elements - such as plain bearing bushes or complete roller bearings - on pipes or pipe sections by hydraulically expanding the pipe in the area of the respective elements beyond the elastic limit against one elastic prestressing in the respective elements by means of a pressure medium probe, which has effective sections delimited by seals in association with the elements which are connected to a pressure medium generator via a first bore system of the probe, and with intermediate sections between individual active sections which are connected to a second bore system of the Stand probe, as well as with end sections each adjoining the outermost knitting sections, the knitting sections with the pipe knitting areas and the intermediate sections with the pipe intermediate sections, and the end sections with the pipe endber Form oak.
  • a pressure medium probe which has effective sections delimited by seals in association with the elements which are connected to a pressure medium generator via a first bore system of the probe, and with intermediate sections between individual active sections which are connected to a second bore system of the Stand probe, as
  • a pressure medium probe which has two mutually independent bore systems, one of which is connected to a pressure medium generator to act upon the effective areas and the second is connected to the intermediate sections of the leak medium discharge should serve, especially if some of the seals fail.
  • the procedure that can be carried out with this is due to the pressure build-up marked in the effective areas until the elastic limit of the affected pipe sections is exceeded and the subsequent pressure reduction.
  • pressure generators with an output are used which are connected directly to the first drilling system of the pressure medium probe.
  • the main problem with the known method is the lack of operational reliability of the seals, in particular since the pressures required will continue to increase in the case of increasingly larger shaft types which are to be produced by this method.
  • the invention has for its object to provide a method that reduces the risk of seal failure and increases the possible service life of the seals. Furthermore, a pressure medium probe suitable for carrying out the method and a suitable pressure generator which can be connected to such a probe are to be provided for carrying out the method.
  • the effective areas are subjected to a high effective pressure suitable for deforming the tube beyond the elastic limit, and that the intermediate areas and the end areas, at least in sections on both sides of the effective areas, at least while the high effective pressure is present, with a pressure above the ambient pressure and are applied under the lower counterpressure required for the deformation beyond the elastic limit.
  • a pressure below the differential pressure is first built up to build up the pressure in the effective areas and then the pressure builds up in the effective areas and the back pressure in the intermediate areas is built up and end areas, the pressure in the effective areas always being higher than in the intermediate and end areas until the desired back pressure is reached and the pressure difference must remain below the design limit of the seals, and then the pressure build-up in the effective areas takes place to the desired level Effective pressure instead, the higher pressure in the effective areas always ensuring that the seals are in contact, while to reduce the pressure after building up and maintaining the effective pressure, the pressure in the effective areas is first at an intermediate pressure below the counterpressure is reduced to allow the seals to be relieved and spring back, and then the further pressure reduction in the effective areas and the pressure reduction in the counterpressure in the intermediate areas and end areas take place together.
  • the volumes of the intermediate and end areas connected to the second bore system are relatively large, so that it is a good idea to continue filling the cavities with the pressure medium with a low filling pressure below the counterpressure.
  • the method step mentioned is to be extended analogously to the filling of the effective areas before the effective pressure is given up.
  • the filling pressure mentioned is to be set so that it brings them to the sealing contact on the pipe, so that no uncontrolled deformations of the seals take place when the active and counterpressure are subsequently given up.
  • the pressure reduction in the effective areas on the one hand and the end and intermediate areas on the other hand should preferably be carried out in the reverse order of how the pressure is built up, whereby the objective here must also be to keep the pressure differences effective at the seals as low as possible and to solve them with the reverse pressure difference of the seals.
  • the above-mentioned filling pressure is already during the insertion of the pressure medium probe and while the pressure medium probe is being pulled applied from the tubular body so that liquid flows around the seals under low pressure. This creates a desired friction-reducing lubricating effect for the seals against the rough inner wall of the tubular body.
  • a pressure medium probe according to the invention for carrying out the above-mentioned methods is characterized in that further seals for the formation of pressurizable end sections are arranged at a distance outside the outer active sections delimited by seals, that the end sections have the same system of longitudinal channels and associated radial bores how the intermediate sections are connected and that both drilling systems can be connected separately with pressure generating means.
  • Another pressure medium probe is characterized in that the seals of the active sections arranged in pairs are framed on both sides by at least one counterpressure section delimited by seals arranged at a distance, which are connected in pairs to the second system of longitudinal channels and radial bores, and in that both drilling systems separately seal with pressure generating means are connectable.
  • each active section is assigned separate adjacent sections in which a counterpressure can be applied.
  • this arrangement can be advantageous since the volumes to be acted upon by the counterpressure are significantly smaller can be held. In contrast, the need for a larger number of seals is eliminated.
  • the design referred to here is advantageous in the case of probes with particularly pronounced sealing sections of larger diameter.
  • the two basic configurations of the probe mentioned above can be combined in a favorable manner in such a way that a third bore system of longitudinal channels and radial bores is provided, the three existing systems then being acted upon with different pressure levels, so that a two-stage pressure difference is particularly high for the task Printing in the effective areas becomes possible.
  • the intermediate pressure areas immediately adjacent to the effective areas can be kept so short that they still lie within the elements to be defined and the pressure effective in them deforms the tube beyond the elastic limit.
  • Pressure generators according to the invention for carrying out the method according to the invention and for connection to the pressure medium probes mentioned are characterized in that a single working or pressure converter piston can act on at least two pressure medium outlets with different pressures during the working stroke, in particular the working piston can be designed as a differential piston and by the connection certain dead spaces the various required pressure profiles can be generated.
  • the base body consists of an integral tube 5 connected to the probe head and an outer tube 6.
  • effective areas a1, a2 are defined by pairs of seals.
  • An intermediate area b lies between the effective areas.
  • a further seal 11 is arranged on the probe head and defines an end region c with the seal 10.
  • the effective areas are connected by radial bores 12, 13 to a central pressure medium supply bore 14 in the probe base body 1, which completely penetrates the latter and is closed in the probe head 2 by means of a plug 15.
  • the intermediate areas b1, b2 are connected via radial bores 16, 17 to a longitudinal channel 18 formed as a groove in the inner tube 5; the end section c is connected by means of a further radial bore 19 to precisely this longitudinal channel, which is closed at the end by the probe head 2.
  • This second bore system serves to build up the back pressure in the entire intermediate areas b and end areas c.
  • a sleeve 22 is pushed onto a probe body 21 in a one-piece construction, which sleeve can, for example, be glued, shrunk or soldered onto the tubular body.
  • the sleeve carries paired seals 23, 24 which define an effective range a3.
  • the effective area is connected to a central pressure medium channel 26 via a radial bore 25 running perpendicular to the drawing.
  • Each immediately adjacent to the seals 23, 24 are further seals 27, 28 on the sleeve 22, which define d1, d2 with the aforementioned counter or intermediate pressure sections.
  • radial bores 29, 30 are connected via radial bores 29, 30 to a longitudinal channel 31 in the probe base body 21, via which a back pressure is to be applied if no further bores are provided in the probe or an intermediate pressure if the probe continues to have the details described below.
  • These consist of a third system of radial bores 32, which are optionally subjected to a back pressure for the intermediate and end regions via a third longitudinal channel 33.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Sealing Devices (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Actuator (AREA)
  • Measuring Fluid Pressure (AREA)
EP89119114A 1988-12-17 1989-10-14 Verfahren zum Festlegen Expired - Lifetime EP0374407B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3842589A DE3842589A1 (de) 1988-12-17 1988-12-17 Verfahren zum festlegen
DE3842589 1988-12-17

Publications (3)

Publication Number Publication Date
EP0374407A2 EP0374407A2 (de) 1990-06-27
EP0374407A3 EP0374407A3 (de) 1991-03-20
EP0374407B1 true EP0374407B1 (de) 1992-07-15

Family

ID=6369441

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89119114A Expired - Lifetime EP0374407B1 (de) 1988-12-17 1989-10-14 Verfahren zum Festlegen

Country Status (8)

Country Link
US (1) US5115654A (pt)
EP (1) EP0374407B1 (pt)
JP (1) JP2539274B2 (pt)
KR (1) KR930006044B1 (pt)
BR (1) BR8906511A (pt)
CA (1) CA2005404C (pt)
DE (2) DE3842589A1 (pt)
ES (1) ES2034552T3 (pt)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10338348B3 (de) * 2003-08-21 2005-04-07 Daimlerchrysler Ag Aufweitlanze

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5265566A (en) * 1991-12-23 1993-11-30 General Motors Corporation Assembled seal disc for a crankshaft
FR2689044B1 (fr) * 1992-03-26 1996-05-24 France Etat Armement Procede et dispositif de sertissage d'un tube dans une plaque.
DE4221962C2 (de) * 1992-06-30 1994-11-17 Emitec Emissionstechnologie Vorrichtung zum gleichzeitigen Befestigen mehrerer Bauteile an axial beabstandeten Befestigungsstellen eines Hohlkörpers
CA2184996A1 (en) * 1994-04-29 1995-11-09 Thomas D. Coe Method and apparatus for hydro-forming thin-walled workpieces
DE19532954A1 (de) * 1995-09-07 1997-03-13 Dynamit Nobel Ag Abstreckdrückvorrichtung zur Herstellung von drückgewalzten Teilen unterschiedlicher Wanddicke
US6151939A (en) * 1996-01-04 2000-11-28 Delaware Capital Formation, Inc. Can shaping apparatus
US6079244A (en) * 1996-01-04 2000-06-27 Ball Corporation Method and apparatus for reshaping a container body
US5794474A (en) * 1997-01-03 1998-08-18 Ball Corporation Method and apparatus for reshaping a container body
DE19802484C2 (de) 1998-01-23 2000-06-08 Daimler Chrysler Ag Verfahren und Vorrichtung zur Herstellung von gebauten Nockenwellen
DE19957508C1 (de) * 1999-11-30 2001-01-04 Daimler Chrysler Ag Vorrichtung zum Fügen von Fügeteilen auf Hohlprofile mittels fluidischen Innenhochdruckes
CN107755553A (zh) * 2016-08-22 2018-03-06 南昌海立电器有限公司 一种扩管机

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE372608C (de) * 1923-03-29 Georg Ulrich Verfahren und Vorrichtung zum Anbringen eines Emailleueberzuges auf Drahtgewebe
US3030901A (en) * 1955-08-30 1962-04-24 Taylor Wilson Mfg Company Means and method for expanding and testing pipe
JPS5477272A (en) * 1977-12-02 1979-06-20 Hitachi Ltd Coaxial multipoint tube expansion apparatus
DD224747A3 (de) * 1983-03-14 1985-07-10 Skl Magdeburg Veb Rohraufweiter
US4802273A (en) * 1985-07-18 1989-02-07 Cockerill Mechanical Industries Hydraulic expansion tool for tubular element
DE3726083A1 (de) * 1986-08-12 1988-02-18 Balcke Duerr Ag Vorrichtung zur befestigung von teilen auf einem hohlkoerper
DE3768880D1 (de) * 1986-08-12 1991-05-02 Balcke Duerr Ag Verfahren und vorrichtung zur befestigung von teilen auf einem hohlkoerper.
DE3717517A1 (de) * 1987-05-25 1988-12-15 Emitec Emissionstechnologie Aufweitsonde mit kleinem durchmesser und grosser laenge
DE3720486C1 (de) * 1987-06-20 1988-11-03 Uni Cardan Ag Druckmittelsonde
DE3720487C1 (de) * 1987-06-20 1988-10-20 Uni Cardan Ag Vorrichtung zum hydraulischen Aufweiten
DE3729169A1 (de) * 1987-09-01 1989-03-09 Emitec Emissionstechnologie Sonde zum hydraulischen aufweiten mit zentriereinrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10338348B3 (de) * 2003-08-21 2005-04-07 Daimlerchrysler Ag Aufweitlanze

Also Published As

Publication number Publication date
EP0374407A3 (de) 1991-03-20
KR900009174A (ko) 1990-07-02
CA2005404C (en) 1998-08-04
US5115654A (en) 1992-05-26
DE58901845D1 (de) 1992-08-20
JP2539274B2 (ja) 1996-10-02
BR8906511A (pt) 1990-08-21
EP0374407A2 (de) 1990-06-27
JPH02211916A (ja) 1990-08-23
CA2005404A1 (en) 1990-06-17
KR930006044B1 (ko) 1993-07-03
DE3842589A1 (de) 1990-06-21
ES2034552T3 (es) 1993-04-01

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