WO1994005446A1 - Dispositif de laminage permettant de produire des pieces ondulees en un materiau metallique - Google Patents

Dispositif de laminage permettant de produire des pieces ondulees en un materiau metallique Download PDF

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Publication number
WO1994005446A1
WO1994005446A1 PCT/EP1993/002343 EP9302343W WO9405446A1 WO 1994005446 A1 WO1994005446 A1 WO 1994005446A1 EP 9302343 W EP9302343 W EP 9302343W WO 9405446 A1 WO9405446 A1 WO 9405446A1
Authority
WO
WIPO (PCT)
Prior art keywords
workpiece
rolling
flat
length
rotationally symmetrical
Prior art date
Application number
PCT/EP1993/002343
Other languages
German (de)
English (en)
Inventor
Bernd Lorenz
Christoph Eck
Original Assignee
Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
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 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. filed Critical Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
Publication of WO1994005446A1 publication Critical patent/WO1994005446A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H1/00—Making articles shaped as bodies of revolution
    • B21H1/18—Making articles shaped as bodies of revolution cylinders, e.g. rolled transversely cross-rolling

Definitions

  • the invention relates to a rolling device for producing corrugated workpieces made of metallic material, which has two flat jaws which can be moved synchronously, in parallel planes against one another and tangentially on the workpiece rotating about its longitudinal axis.
  • Such rolling devices are generally known and are used primarily to produce rotationally symmetrical changes in cross-section on shaft-shaped workpieces or, in the event that the flat jaws are provided with corresponding ribs, for rolling threads (DE 45389).
  • Wavy workpieces with non-rotationally symmetrical sections are predominantly made by master molding processes, e.g. Casting, or produced by reshaping processes such as open die forging, drop forging, TR process, bending or also by machining processes. Which of these methods is preferred depends, among other things, on on the size and number of workpieces to be manufactured.
  • the cross-sectional changes to the intermediate shapes possible by these methods are arranged in a rotationally symmetrical manner with respect to the longitudinal axis of the workpiece.
  • Non-rotationally symmetrical sections are subsequently produced by forging in the die itself, which in turn can lead to mold filling problems, over-forging or to very large loads on the die.
  • the invention is based on the object of specifying a rolling device of the type mentioned at the outset, with which non-rotationally symmetrical sections can be produced on shaft-shaped workpieces with respect to their longitudinal axis.
  • optimum mass distribution should be achieved in the manufacture of intermediate dies for drop forging.
  • the object is achieved in that at least one attached to a flat jaw, smaller in width than the total length of the workpiece, in its circumferential rolling length on the workpiece less than or equal to half the circumference of the workpiece and its height in accordance with a predetermined eccentricity ⁇ act trained roll block is provided, which displaces material of the workpiece heated to a forging temperature corresponding to the material when moving the flat jaws, the displacement of the material to form a non-rotationally symmetrical section and at the same time to a change in length of the workpiece or with a lateral limitation of the Workpiece leads to rolling on the workpiece.
  • the device according to the invention is particularly suitable for producing workpieces which are further processed as intermediate shapes in a drop forging process.
  • the device according to the invention can be used to produce intermediate molds with an optimal material mass distribution, so that better mold filling in the die, a reduction in the die load and material savings due to lower burr losses are achieved.
  • the device according to the invention enables the number of forming stages in drop forging to be minimized, which in turn results in production time savings.
  • An advantageous embodiment of the device according to the invention consists in that several rolling blocks are alternately arranged on the flat jaws. This measure can influence the size of the non-rotationally symmetrical cross-sectional change to be achieved on the workpiece.
  • a preferred embodiment of the device according to the invention also consists in that a plurality of rolling blocks arranged at a distance from one another are provided on the flat jaw or jaws. This makes it possible to create several non-rotationally symmetrical sections along the workpiece.
  • the invention is described below using an exemplary embodiment and an associated one
  • 1 denotes a wavy workpiece consisting of a metallic material, cut or sheared to a predetermined length.
  • a roller block 3 which is attached to the lower flat jaw 2b and is smaller in width than the total length of the workpiece 1 and in its length rolling in the circumferential direction on the workpiece 1, is equal to half the circumference of the workpiece 1 and ensures that material on the Workpiece 1 is displaced, and a non-rotationally symmetrical section 5 is formed on the workpiece 1 with respect to its longitudinal axis 4 (FIG. 2).
  • the eccentricity achieved depends on the selected height and the width of the non-rotationally symmetrical section 5 on the width of the rolling block 3.
  • the displacement of the material simultaneously leads to a change in length or, if the workpiece 1 is limited laterally, to rolling, i.e. to increase the diameter.
  • the width of the roll-ons must be kept smaller than the difference formed by the length of the workpiece 1 and the width of the roll block 3.
  • the size of the non-rotationally symmetrical cross-sectional change to be achieved can be influenced by mutual arrangement of a plurality of rolling blocks 3, both on the lower and on the upper flat jaws 2b and 2a.
  • a plurality of rolling blocks 3 on the one or more flat jaws 2a or 2b at a distance from one another, so that a plurality of adjacent, non-rotationally symmetrical sections along the workpiece 1, possibly different in their eccentricity, are formed.
  • the rolling device described enables the production of finished parts, but it is also particularly suitable for the production of optimized intermediate forms for certain families of parts which are produced in a drop forging process.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)

Abstract

Un dispositif de laminage permettant de produire des pièces ondulées en un matériau métallique comprend deux mâchoires plates mobiles synchroniquement dans des plans parallèles l'une contre l'autre, tangentiellement à une pièce en rotation autour de son axe longitudinal. L'objet de l'invention est de créer un dispositif qui permette de façonner à volonté des sections non symétriques en rotation par rapport à un point dans des pièces ondulées par rapport à leur axe longitudinal. A cet effet, au moins un bloc de laminage (3) dont la largeur est inférieure à la longueur totale de la pièce (1), dont la longueur qui se déroule dans le sens de sa circonférence sur la pièce (1) est inférieure ou égale à la moitié de la circonférence de la pièce et dont la hauteur correspond à une excentricité prédéterminée, est positionné sur une mâchoire plate (2b). Lorsque les mâchoires plates se déplacent, le bloc de laminage (3) écarte le matériau de la pièce (1) chauffée jusqu'à une température appropriée de forgeage du matériau en question. Cet écartement du matériau entraîne la formation d'une section non symétrique par rapport à un point, et en même temps modifie la longueur de la pièce, ou lorsque la pièce est latéralement limitée, forme des ondulations sur la pièce.
PCT/EP1993/002343 1992-09-01 1993-08-30 Dispositif de laminage permettant de produire des pieces ondulees en un materiau metallique WO1994005446A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19924229123 DE4229123C2 (de) 1992-09-01 1992-09-01 Walzvorrichtung zur Herstellung von wellenförmigen Werkstücken aus metallischem Werkstoff
DEP4229123.2 1992-09-01

Publications (1)

Publication Number Publication Date
WO1994005446A1 true WO1994005446A1 (fr) 1994-03-17

Family

ID=6466945

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1993/002343 WO1994005446A1 (fr) 1992-09-01 1993-08-30 Dispositif de laminage permettant de produire des pieces ondulees en un materiau metallique

Country Status (2)

Country Link
DE (1) DE4229123C2 (fr)
WO (1) WO1994005446A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB743173A (en) * 1951-07-02 1956-01-11 Gkn Group Services Ltd Improvements in screwed fastenings
SU479551A1 (ru) * 1973-06-01 1975-08-05 Центральное Конструкторское Бюро С Опытным Производством Ан Белор.Сср Инструмент дл поперечно-клиновой прокатки
SU1232347A1 (ru) * 1984-10-08 1986-05-23 Физико-технический институт АН БССР Способ изготовлени валов с эксцентричными ступен ми
GB2188573A (en) * 1986-04-02 1987-10-07 Nissan Motor Method of and device for forming asymmetrical articles by rolling
SU1417981A1 (ru) * 1987-01-29 1988-08-23 Физико-технический институт АН БССР Способ изготовлени поковок крестовин карданных валов
SU1488086A1 (ru) * 1987-03-23 1989-06-23 Научно-Производственное Объединение По Кузнечно-Прессовому Оборудованию И Гибким Производственным Системам Для Обработки Давлением "Эникмаш" Способ изготовлени ступенчатых изделий с участком некруглого поперечного сечени
JPH0366439A (ja) * 1989-08-04 1991-03-22 Nissan Motor Co Ltd 転造加工装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE45389C (de) * AMERICAN Screw Co. by Edwin G. Awgell President in New-York Gewindewalzmaschine mit gei raden Walzbacken

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB743173A (en) * 1951-07-02 1956-01-11 Gkn Group Services Ltd Improvements in screwed fastenings
SU479551A1 (ru) * 1973-06-01 1975-08-05 Центральное Конструкторское Бюро С Опытным Производством Ан Белор.Сср Инструмент дл поперечно-клиновой прокатки
SU1232347A1 (ru) * 1984-10-08 1986-05-23 Физико-технический институт АН БССР Способ изготовлени валов с эксцентричными ступен ми
GB2188573A (en) * 1986-04-02 1987-10-07 Nissan Motor Method of and device for forming asymmetrical articles by rolling
SU1417981A1 (ru) * 1987-01-29 1988-08-23 Физико-технический институт АН БССР Способ изготовлени поковок крестовин карданных валов
SU1488086A1 (ru) * 1987-03-23 1989-06-23 Научно-Производственное Объединение По Кузнечно-Прессовому Оборудованию И Гибким Производственным Системам Для Обработки Давлением "Эникмаш" Способ изготовлени ступенчатых изделий с участком некруглого поперечного сечени
JPH0366439A (ja) * 1989-08-04 1991-03-22 Nissan Motor Co Ltd 転造加工装置

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 7840, Derwent World Patents Index; AN 78-71836A(40) *
PATENT ABSTRACTS OF JAPAN vol. 15, no. 222 (M - 1121) 6 June 1991 (1991-06-06) *
SOVIET INVENTIONS ILLUSTRATED Week 8701, 7 January 1987 Derwent World Patents Index; AN 87-006156/01 *
SOVIET INVENTIONS ILLUSTRATED Week 8909, 12 April 1989 Derwent World Patents Index; AN 89-067383/09 *
SOVIET INVENTIONS ILLUSTRATED Week 9015, 23 May 1990 Derwent World Patents Index; AN 90-114347/15 *

Also Published As

Publication number Publication date
DE4229123A1 (de) 1994-03-03
DE4229123C2 (de) 1995-06-14

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