EP0107218A1 - Process for the manufacture of endless metal bands - Google Patents

Process for the manufacture of endless metal bands Download PDF

Info

Publication number
EP0107218A1
EP0107218A1 EP83201337A EP83201337A EP0107218A1 EP 0107218 A1 EP0107218 A1 EP 0107218A1 EP 83201337 A EP83201337 A EP 83201337A EP 83201337 A EP83201337 A EP 83201337A EP 0107218 A1 EP0107218 A1 EP 0107218A1
Authority
EP
European Patent Office
Prior art keywords
bands
endless
metal
metal bands
pipe
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
EP83201337A
Other languages
German (de)
French (fr)
Other versions
EP0107218B1 (en
Inventor
Willem Koppelaars
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.)
Bosch Transmission Technology BV
Original Assignee
Van Doornes Transmissie BV
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 Van Doornes Transmissie BV filed Critical Van Doornes Transmissie BV
Priority to AT83201337T priority Critical patent/ATE51779T1/en
Publication of EP0107218A1 publication Critical patent/EP0107218A1/en
Application granted granted Critical
Publication of EP0107218B1 publication Critical patent/EP0107218B1/en
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
    • B21D53/00—Making other particular articles
    • B21D53/14—Making other particular articles belts, e.g. machine-gun belts

Definitions

  • the invention relates to a process for the manufacture of endless metal bands which have been made endless by means of welded joints.
  • Such a process which is known from the U:S. patent 3,922,771, makes it possible to produce endless bands which can be applied as part of a composite metal driving belt.
  • the object of the present invention is to afford a process whereby endless bands can be manufactured from plate metal in a simple fashion and with a minimum waste of material.
  • a strip of plate metal is wound and welded together edge to edge in a helical shape so as to form a pipe whose length is equal to at least a multiple of the width of the metal bands, whereupon ring-shaped parts having substantially the same width as the bands are severed from the pipe.
  • the length of the band may be increased by rolling, which also has a beneficial effect on the welded joint.
  • the welding is preferably done by a method in which no additional metal is supplied.

Abstract

A process for the manufacture of endless metal bands, suitable as part of a composite metal drive belt. The endless metal bands can be manufactured from plate metal (1) which is welded together edge to edge to obtain a pipe (2) whose length is equal to at least a multiple of the width of the metal bands. Ringshaped parts (4) having substantially the same width as the bands are cutted off from the pipe.

Description

  • The invention relates to a process for the manufacture of endless metal bands which have been made endless by means of welded joints. Such a process, which is known from the U:S. patent 3,922,771, makes it possible to produce endless bands which can be applied as part of a composite metal driving belt.
  • One problem encountered with the process described in the said patent is how to obtain a welded joint of satisfactory quality. A very important aspect in this regard is the quality of the edge of the resultant endless band close to the weld, because it is there that an incipient fracture generally originates. This problem can be solved by removing the side edges from the band, for instance by means of a cutting operation, after the band has been made endless. Such a procedure is expensive and entails a considerable waste of material.
  • The object of the present invention is to afford a process whereby endless bands can be manufactured from plate metal in a simple fashion and with a minimum waste of material.
  • To this end, according to the invention a strip of plate metal is wound and welded together edge to edge in a helical shape so as to form a pipe whose length is equal to at least a multiple of the width of the metal bands, whereupon ring-shaped parts having substantially the same width as the bands are severed from the pipe. As a result, endless bands are obtained whose side edges have been machined after the welded joint has been made, which quarantees optimum egdes of the endless band, especially near the welded joint.
  • As such, it is a known technique to cut endless bands from tubular material, which affords the only possibility of obtaining endless bands that are not provided with a welded joint. It is, however, preferable by far to produce endless bands from plate metal because of their good properties such as constant thickness and level surface.
  • By shaping a strip of plate metal into a helical form endless bands are obtained which are provided with an oblique weld, which enhances their strength.
  • After the ring-shaped parts have been cut off, various machining operations can be carried out in order to modify their quality and/or size. Thus, the length of the band may be increased by rolling, which also has a beneficial effect on the welded joint.
  • To elucidate the invention, an embodiment of the process will now be described with reference to the drawing.
  • The drawing only gives a diagrammatic view of the way in which a strip of plate metal 1 is welded by a helical shape into a pipe 2. As a result, a helical welded joint 3 is formed. By cutting off ring-shaped parts 4 from the pipe 2, endless bands are obtained with an oblique welded joint 5.
  • The welding is preferably done by a method in which no additional metal is supplied.
  • It will be clear that the procedure described yields an endless welded band which can comply with all qualitative requirements, while keeping the amount of waste material down to a minimum. This is of particular importance because the material generally used is of a very high quality and correspondingly expensive.

Claims (2)

1. A process for the manufature of endless metal bands which have been made endless by means of welded joints, characterized in that a strip of plate metal is wound and welded together edge to edge in a helical shape so as to form a pipe whose length is equal to at least a multiple of the width of the metal bands, whereupon ring-shaped parts having substantially the same width as the bands are severed from the pipe.
2. A process according to claim 1, characterized in that the severed.ring-shaped parts are elongated by rolling.
EP83201337A 1982-09-23 1983-09-19 Process for the manufacture of endless metal bands Expired - Lifetime EP0107218B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83201337T ATE51779T1 (en) 1982-09-23 1983-09-19 PROCESS FOR MANUFACTURING ENDLESS METAL TAPE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8203686 1982-09-23
NL8203686A NL8203686A (en) 1982-09-23 1982-09-23 METHOD FOR MANUFACTURING ENDLESS METAL TIRES

Publications (2)

Publication Number Publication Date
EP0107218A1 true EP0107218A1 (en) 1984-05-02
EP0107218B1 EP0107218B1 (en) 1990-04-11

Family

ID=19840313

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83201337A Expired - Lifetime EP0107218B1 (en) 1982-09-23 1983-09-19 Process for the manufacture of endless metal bands

Country Status (5)

Country Link
EP (1) EP0107218B1 (en)
JP (1) JPS5978736A (en)
AT (1) ATE51779T1 (en)
DE (1) DE3381430D1 (en)
NL (1) NL8203686A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU623000B2 (en) * 1989-04-14 1992-04-30 Sumitomo Metal Industries Ltd. Method of producing laminated metal belt
EP1108919A1 (en) * 1999-12-15 2001-06-20 BorgWarner Inc. Continuous manufacture of push type CVT belt bands
WO2009090552A1 (en) * 2008-01-18 2009-07-23 Toyota Jidosha Kabushiki Kaisya Method of producing ring member

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR539968A (en) * 1917-07-06 1922-07-04 Improvements made to endless belts and their manufacturing process
US3126626A (en) * 1964-03-31 Method of manufacturing a drive belt
FR2082688A5 (en) * 1968-03-14 1971-12-10 Polakowski Natalis
US3922771A (en) * 1973-12-11 1975-12-02 Varitrac Ag Method for the manufacture of driving belt packages
DE2725778A1 (en) * 1976-06-03 1977-12-15 Kloften & Kloften A S Oslo METHOD OF SPLICING TAPES

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53137861A (en) * 1977-05-09 1978-12-01 Takasago Thermal Engineering Manufacturing method of curved pipe
JPS57124537A (en) * 1981-01-24 1982-08-03 Aisin Warner Ltd Manufacture of steel-made thin endless belt

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126626A (en) * 1964-03-31 Method of manufacturing a drive belt
FR539968A (en) * 1917-07-06 1922-07-04 Improvements made to endless belts and their manufacturing process
FR2082688A5 (en) * 1968-03-14 1971-12-10 Polakowski Natalis
US3922771A (en) * 1973-12-11 1975-12-02 Varitrac Ag Method for the manufacture of driving belt packages
DE2725778A1 (en) * 1976-06-03 1977-12-15 Kloften & Kloften A S Oslo METHOD OF SPLICING TAPES

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU623000B2 (en) * 1989-04-14 1992-04-30 Sumitomo Metal Industries Ltd. Method of producing laminated metal belt
EP1108919A1 (en) * 1999-12-15 2001-06-20 BorgWarner Inc. Continuous manufacture of push type CVT belt bands
WO2009090552A1 (en) * 2008-01-18 2009-07-23 Toyota Jidosha Kabushiki Kaisya Method of producing ring member
US8281629B2 (en) 2008-01-18 2012-10-09 Toyota Jidosha Kabushiki Kaisha Method of producing ring member

Also Published As

Publication number Publication date
ATE51779T1 (en) 1990-04-15
NL8203686A (en) 1984-04-16
JPS5978736A (en) 1984-05-07
DE3381430D1 (en) 1990-05-17
EP0107218B1 (en) 1990-04-11

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