EP0331938A2 - Dispositif d'assemblage en position déterminée de plusieurs pièces sur un corps creux - Google Patents

Dispositif d'assemblage en position déterminée de plusieurs pièces sur un corps creux Download PDF

Info

Publication number
EP0331938A2
EP0331938A2 EP89102668A EP89102668A EP0331938A2 EP 0331938 A2 EP0331938 A2 EP 0331938A2 EP 89102668 A EP89102668 A EP 89102668A EP 89102668 A EP89102668 A EP 89102668A EP 0331938 A2 EP0331938 A2 EP 0331938A2
Authority
EP
European Patent Office
Prior art keywords
hollow body
housing
parts
guide
mold
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
EP89102668A
Other languages
German (de)
English (en)
Other versions
EP0331938B1 (fr
EP0331938A3 (en
Inventor
Herbert Krips
Miroslan Dr. Podhorsky
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.)
Balcke Duerr AG
Original Assignee
Balcke Duerr AG
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 Balcke Duerr AG filed Critical Balcke Duerr AG
Priority to AT89102668T priority Critical patent/ATE78200T1/de
Publication of EP0331938A2 publication Critical patent/EP0331938A2/fr
Publication of EP0331938A3 publication Critical patent/EP0331938A3/de
Application granted granted Critical
Publication of EP0331938B1 publication Critical patent/EP0331938B1/fr
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
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/033—Deforming tubular bodies
    • 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
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts

Definitions

  • the invention relates to a device for the precise location of a plurality of parts, each provided with an opening, on a hollow body, in particular cams and bearing shells on a camshaft, the opening in the parts being larger than their respective fastening point on the hollow body in the initial state and the parts in the predetermined position is brought onto the hollow body before the fastening process takes place by widening the hollow body at least in the area of the fastening points, for which purpose the parts to be fastened are inserted into recesses of a shape which is at least two-part in the axial direction, the hollow body is inserted into the openings of the parts and the molded parts are aligned and held to one another by a surrounding housing.
  • a device of the type described above is known from DE-0S 36 16 901. It is used to manufacture a camshaft, which is produced by pushing cam disks onto a hollow shaft, introducing the structure thus formed into a shape and expanding the hollow shaft, this expansion taking place by introducing a fluid under high pressure.
  • the mold consists of two mold halves, which are provided with corresponding recesses for the cam discs. This mold, which is divided in two in the axial direction, is inserted into a likewise two-part housing during the expansion process, which holds the two mold halves together.
  • camshafts Since it is of crucial importance in the production of camshafts that the individual cam disks are positioned exactly on the hollow shaft so that later machining of the cams can be avoided or reduced to a minimum, high demands are placed on the design of the shape as well the alignment of the mold halves during the manufacturing process. If the cam disks can twist or shift in the axial direction within the recesses of the two mold halves and if the two mold halves are not exactly aligned with one another and held in this aligned state, either unusable camshafts result or the individual cams are required with great effort to edit.
  • the invention has for its object to develop a device of the type described in such a way that on the one hand there is an exact positional determination of the parts to be fastened on a hollow body, each provided with an opening and on the other hand there is an exact assignment of the individual molded parts to one another when the multi-part Form is held together by the surrounding housing.
  • the solution to this problem by the invention is characterized in that the mold is divided into a plurality of axial mold sections, which are formed with end-face contact surfaces, axially extending, circumferential alignment effecting guide surfaces and a conical outer surface on which a for centering the mold sections a conical centering provided housing can be pushed.
  • each axial shaped section preferably being designed to receive such a part.
  • the axial mold sections are assembled after the parts have been inserted to form the overall shape, with an exact alignment of the mold sections in the circumferential direction being effected by guide surfaces which run in the axial direction.
  • the axial shaped sections are finally centered via their conical lateral surfaces when a housing with a conical centering surface designed according to the conical lateral surface of the shaped sections is pushed onto the assembled mold.
  • the shape according to the invention consisting of axial mold sections, thus automatically causes the parts to be fastened to the hollow body to be aligned precisely, since exact positioning in the axial direction is achieved via the end faces, alignment in the circumferential direction via the axially extending guide surfaces, and centering via the conical lateral surfaces of the individual mold sections takes place without overdeterminations occurring or gaps forming during assembly.
  • the housing is made in one piece in the manner of a bell.
  • the axially extending guide surfaces can be designed as a bore formed in each part of the mold sections which are at least two-part in the axial direction and into which one of at least two guide rods arranged in the housing engages.
  • the guidance and alignment in the circumferential direction is carried out by precise and easy to manufacture cylindrical bores and guide rods.
  • the axially extending guide surfaces are designed as guide strips or guide grooves which are formed on the conical lateral surface of each part of the shaped sections which are at least two-part in the axial direction and which cooperate with a corresponding guide groove or guide strip in or on the conical centering surface of the housing.
  • the bottom of the bell-like housing can be designed as a contact surface for the last molded section and the first molded section can rest against the contact surface of a bearing part, which is also provided with a guide and sealing surface for the hollow body, so that its sealing after its insertion into the Form is achieved automatically.
  • This camshaft consists of a hollow shaft 1, on which a total of eight cams 2 and a flange 3 are to be fastened in the exemplary embodiment.
  • a mold which, in the exemplary embodiment, consists of a total of nine mold sections 4.
  • Each shaped section 4 is divided in two in the axial direction, as can be seen from FIGS. 2 to 3 and 6.
  • Each of these mold sections 4 has a recess for receiving a cam 2 or the flange 3, as again best seen in FIGS. 1 and 5.
  • each mold section 4 is provided with end-face contact surfaces 4 a, which are drawn in with respect to the central mold section 4 in FIGS. 1 and 5.
  • the form sections 4 which follow one another in the axial direction abut one another via these end-face contact surfaces 4a, which is also evident from FIGS. 1 and 5.
  • Each of the two-part mold sections 4 is also provided with axially extending guide surfaces 4b, which serve to align the mold sections 4 in the circumferential direction.
  • these guide surfaces 4b are formed by a cylindrical bore.
  • the guide surfaces 4b consist of axial grooves in the outer surface of each two-part molded section 4 (see FIG. 6).
  • the shaped sections 4 are finally formed with conical lateral surfaces 4c, so that overall, when the shaped sections 4 are assembled, a shape with a conical lateral surface results, as can be seen from the lower halves of FIGS. 1 and 5.
  • a housing 6 is pushed onto the mold composed of the mold sections 4.
  • the housing 6 is provided with a conical centering surface 6a, which causes the individual mold sections 4 to be centered automatically when the housing 6 is pushed on.
  • an axial determination of the position takes place via the end-face contact surfaces 4a and an alignment of the shaped sections 4 in the circumferential direction via the guide surfaces 4b.
  • the last shape lies section 4 with its contact surface 4a on a contact surface 6b of the housing 6, which is formed on the bottom 6c of the housing 6 which is formed in one piece in the manner of a bell.
  • the guide surfaces 4b formed in the form of grooves 4 in the form of grooves interact with guide strips 6d which protrude in the axial direction from the centering surface 6a of the housing 6.
  • the hollow shaft 1 is expanded in the exemplary embodiments with the aid of a pressure medium introduced into the hollow shaft 1.
  • This pressure medium is supplied with the aid of a mouthpiece 8, for which a passage opening 6e is provided in the bottom 6c of the housing 6.
  • This mouthpiece 8 presses the hollow shaft 1 on the one hand against the guide and sealing surface 5b of the bearing part 5 and, on the other hand, lies sealingly against the other end of the hollow shaft 1, so that no pressure medium can escape.
  • the mouthpiece 8 is removed, the housing 6 is pulled off and the mold sections 4 are removed from the side, so that the finished camshaft can be fed to the finishing process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Connection Of Plates (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • External Artificial Organs (AREA)
  • Transplanting Machines (AREA)
  • Dowels (AREA)
  • Insertion Pins And Rivets (AREA)
  • Clamps And Clips (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
EP89102668A 1988-03-10 1989-02-16 Dispositif d'assemblage en position déterminée de plusieurs pièces sur un corps creux Expired - Lifetime EP0331938B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89102668T ATE78200T1 (de) 1988-03-10 1989-02-16 Vorrichtung zum lagegenauen befestigen von mehreren teilen auf einem hohlkoerper.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3807817A DE3807817C1 (fr) 1988-03-10 1988-03-10
DE3807817 1988-03-10

Publications (3)

Publication Number Publication Date
EP0331938A2 true EP0331938A2 (fr) 1989-09-13
EP0331938A3 EP0331938A3 (en) 1990-08-29
EP0331938B1 EP0331938B1 (fr) 1992-07-15

Family

ID=6349285

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89102668A Expired - Lifetime EP0331938B1 (fr) 1988-03-10 1989-02-16 Dispositif d'assemblage en position déterminée de plusieurs pièces sur un corps creux

Country Status (8)

Country Link
EP (1) EP0331938B1 (fr)
KR (1) KR950000066B1 (fr)
AT (1) ATE78200T1 (fr)
DD (1) DD285937A5 (fr)
DE (2) DE3807817C1 (fr)
ES (1) ES2033472T3 (fr)
GR (1) GR3005759T3 (fr)
RU (1) RU1782183C (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006015570A1 (fr) * 2004-08-13 2006-02-16 Mahle Ventiltrieb Gmbh Procédé de fabrication d'un arbre à cames
DE102017004570A1 (de) * 2017-05-11 2018-11-15 Technische Universität Dortmund Werkzeug für das Innenhochdruckumformen aus einzeln austauschbaren, formgebenden Segmenten

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3927896A1 (de) * 1989-08-24 1991-02-28 Balcke Duerr Ag Vorrichtung zum lagegenauen befestigen von mehreren teilen auf einem hohlkoerper
DE19831333A1 (de) * 1998-07-13 2000-01-27 Neumayer Erich Gmbh Co Kg Verfahren zum Befestigen von Bauteilen auf einer Hohlwelle
DE19929957B4 (de) * 1999-06-29 2010-12-30 Daimler Ag Fügeverbindung und ein Verfahren zur Herstellung derselben, sowie Lenksäule von Kraftfahrzeugen
DE102005034776B3 (de) * 2005-07-26 2007-03-15 Daimlerchrysler Ag Verfahren zur Herstellung einer Nockenwelle
CN105149427B (zh) * 2015-09-25 2019-10-18 北京京东尚科信息技术有限公司 喇叭网的加工成型装置及方法
CN105149963B (zh) * 2015-09-25 2018-08-28 北京灵隆科技有限公司 喇叭网的加工装置及加工方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3685327A (en) * 1969-11-12 1972-08-22 Masanobu Nakamura Bulging apparatus
GB2050207A (en) * 1979-05-31 1981-01-07 Mannesmann Ag Making camshafts
EP0257175A1 (fr) * 1986-08-12 1988-03-02 Balcke-Dürr AG Méthode et appareil de fixation de pièces sur un corps creux
EP0230731B1 (fr) * 1985-12-31 1991-02-27 Robert W. Hughes Méthode de fabrication d'un arbre à cames

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61266132A (ja) * 1985-05-21 1986-11-25 Musashi Seimitsu Ind Co Ltd 組立カムシヤフトの製造方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3685327A (en) * 1969-11-12 1972-08-22 Masanobu Nakamura Bulging apparatus
GB2050207A (en) * 1979-05-31 1981-01-07 Mannesmann Ag Making camshafts
EP0230731B1 (fr) * 1985-12-31 1991-02-27 Robert W. Hughes Méthode de fabrication d'un arbre à cames
EP0257175A1 (fr) * 1986-08-12 1988-03-02 Balcke-Dürr AG Méthode et appareil de fixation de pièces sur un corps creux

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006015570A1 (fr) * 2004-08-13 2006-02-16 Mahle Ventiltrieb Gmbh Procédé de fabrication d'un arbre à cames
JP2008509013A (ja) * 2004-08-13 2008-03-27 マーレ ヴェンティルトリープ ゲゼルシャフト ミット ベシュレンクテル ハフツング カムシャフトを製作するための方法
US7845075B2 (en) 2004-08-13 2010-12-07 Mahle Ventiltrieb Gmbh Method for manufacturing a camshaft
JP4758994B2 (ja) * 2004-08-13 2011-08-31 マーレ ヴェンティルトリープ ゲゼルシャフト ミット ベシュレンクテル ハフツング カムシャフトを製作するための方法
DE102017004570A1 (de) * 2017-05-11 2018-11-15 Technische Universität Dortmund Werkzeug für das Innenhochdruckumformen aus einzeln austauschbaren, formgebenden Segmenten

Also Published As

Publication number Publication date
KR950000066B1 (ko) 1995-01-09
GR3005759T3 (fr) 1993-06-07
KR890014903A (ko) 1989-10-25
ES2033472T3 (es) 1993-03-16
DE58901825D1 (de) 1992-08-20
DD285937A5 (de) 1991-01-10
EP0331938B1 (fr) 1992-07-15
DE3807817C1 (fr) 1989-03-09
RU1782183C (ru) 1992-12-15
ATE78200T1 (de) 1992-08-15
EP0331938A3 (en) 1990-08-29

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