ES2010280A6 - Hydraulic expansion device - Google Patents

Hydraulic expansion device

Info

Publication number
ES2010280A6
ES2010280A6 ES8801895A ES8801895A ES2010280A6 ES 2010280 A6 ES2010280 A6 ES 2010280A6 ES 8801895 A ES8801895 A ES 8801895A ES 8801895 A ES8801895 A ES 8801895A ES 2010280 A6 ES2010280 A6 ES 2010280A6
Authority
ES
Spain
Prior art keywords
another
individual
elements
expansion
hydraulic expansion
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
Application number
ES8801895A
Other languages
Spanish (es)
Inventor
Herbert Frielingsdorf
Karl Weiss
Heribert Grewe
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 ES2010280A6 publication Critical patent/ES2010280A6/en
Expired legal-status Critical Current

Links

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
    • B21D39/08—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Actuator (AREA)

Abstract

A hydraulic expansion device particularly suitable for the production of a camshaft wherein individual camshaft elements are secured about a hollow shaft at axially spaced apart locations comprises a plurality of individual hydraulic expansion elements 10, 12, 14. Each element includes a fluid supply bore 18, 20, 22 a radially extending bore 28 communicating between the axial bore and the radially outer surface of the element at a position intermediate a pair of sealing rings 24, 26 by means of which each expansion element is sealed to the interior wall of the shaft to be expanded. The individual expansion elements may be secured together adjacent one another to form a rigid unit throughout the length of the device by screw threaded engagement 44 with one another, by bayonet engagement, by welding 46 or by any other suitable securing means. The sealing rings 24, 26 may be replaced by an elastomeric sleeve (84, Fig. 3). Also, the expansion elements (96, Fig.4) may be axially spaced from one another.
ES8801895A 1987-06-20 1988-06-17 Hydraulic expansion device Expired ES2010280A6 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3720487A DE3720487C1 (en) 1987-06-20 1987-06-20 Hydraulic expansion device

Publications (1)

Publication Number Publication Date
ES2010280A6 true ES2010280A6 (en) 1989-11-01

Family

ID=6330010

Family Applications (1)

Application Number Title Priority Date Filing Date
ES8801895A Expired ES2010280A6 (en) 1987-06-20 1988-06-17 Hydraulic expansion device

Country Status (5)

Country Link
DE (1) DE3720487C1 (en)
ES (1) ES2010280A6 (en)
FR (1) FR2616699B1 (en)
GB (1) GB2206515B (en)
IT (1) IT8805180A0 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3716986A1 (en) * 1987-05-21 1988-12-15 Emitec Emissionstechnologie DEVICE FOR HYDRAULIC EXPANSION
DE3809369A1 (en) * 1988-03-19 1989-09-28 Emitec Emissionstechnologie Joining device
DE3842589A1 (en) * 1988-12-17 1990-06-21 Emitec Emissionstechnologie DETERMINATION METHOD
DE19821807C2 (en) * 1998-05-15 2000-10-19 Daimler Chrysler Ag Built expanding lance
GB2340058A (en) * 1998-07-30 2000-02-16 Rover Group An apparatus for securing components upon a structural member
DE19957508C1 (en) 1999-11-30 2001-01-04 Daimler Chrysler Ag Device for inserting insert members with through opening onto hollow profiled sections using fluid pressure has expanding lance as two separate aligned driven oblong components
DE102015114345A1 (en) * 2015-04-28 2016-11-03 Sms Group Gmbh Progressively efficient tube expander and method for gradually expanding a tube

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1939105A1 (en) * 1968-08-13 1970-02-19 High Pressure Components Ltd Lateral broadening of pipes
US4498220A (en) * 1982-08-23 1985-02-12 The Trane Company Method for pre-expanding heat exchanger tube
DE3312073C2 (en) * 1983-04-02 1985-02-07 Wilfried 4630 Bochum Busse Pressure build-up mandrel for pressure-tight fastening of a pipe
US4616392A (en) * 1984-10-04 1986-10-14 Westinghouse Electric Corp. Bladder mandrel for hydraulic expansions of tubes and sleeves
DE3530600A1 (en) * 1985-08-27 1987-03-05 Interatom METHOD FOR FIXING DRIVE ELEMENTS ON A HOLLOW SHAFT

Also Published As

Publication number Publication date
DE3720487C1 (en) 1988-10-20
GB2206515B (en) 1992-01-08
GB2206515A (en) 1989-01-11
IT8805180A0 (en) 1988-06-07
FR2616699A1 (en) 1988-12-23
FR2616699B1 (en) 1991-07-12
GB8814489D0 (en) 1988-07-20

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 20080618