WO1994005446A1 - Rolling device for producing corrugated pieces made of a metallic material - Google Patents
Rolling device for producing corrugated pieces made of a metallic material Download PDFInfo
- 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
Links
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.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
A rolling device for producing corrugated workpieces made of a metallic material has two flat jaws which can be synchronically moved towards each other in parallel planes, tangentially to a workpiece revolving around its longitudinal axis. The object of the invention is to provide a device for purposefully shaping non rotationally symmetrical sections in the corrugated workpieces with respect to their longitudinal axis. For that purpose, at least one rolling block (3), whose width is smaller than the total length of the workpiece (1), whose length rolling in the circumferential direction on the workpiece (1) is smaller than or equal to half the circumference of the workpiece, and whose height corresponds to a predetermined eccentricity, is provided on a flat jaw (2b). When the flat jaws are moved, the rolling block (3) displaces the material of the workpiece (1) heated up to an appropriate forging temperature of the material. The displacement of the material leads to the formation of a non rotationally symmetrical section and at the same time to a change in the length of the workpiece, or when the workpiece is laterally limited, to corrugations of the workpiece.
Description
Walzvorrichtung zur Herstellung von wellenförmigen Werkstücken aus metallischem WerkstoffRolling device for the production of corrugated workpieces made of metallic material
Die Erfindung betrifft eine Walzvorrichtung zur Herstellung von wellenförmigen Werkstücken aus metallischem Werkstoff, die zwei Flachbacken aufweist, die synchron, in parallelen Ebe¬ nen gegeneinander und tangential am sich dabei um seine Längsachse drehenden Werk¬ stück bewegbar sind.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.
Derartige Walzvorrichtungen sind allgemein bekannt und dienen vornehmlich der Erzeugung von drehsymmetrischen Querschnittsänderungen an wellenförmigen Werkstücken oder für den Fall, daß die Flachbacken mit entsprechenden Rippen versehen sind, zum Aufwalzen von Gewinden (DE 45389).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).
Wellenförmige Werkstücke mit nicht drehsymmetrischen Abschnitten werden dagegen vor¬ wiegend durch Urformverfahren, z.B. Gießen, oder durch umformende Verfahren wie Frei¬ formschmieden, Gesenkschmieden, TR-Verfahren, Biegen oder aber auch durch spanende Verfahren hergestellt. Welches dieser Verfahren den Vorzug erhält, hängt dabei u.a. von der Größe und der Stückzahl der zu fertigenden Werkstücke ab.Wavy workpieces with non-rotationally symmetrical sections, on the other hand, 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.
Bei der Herstellung von wellenförmigen Werkstücken durch Gesenkschmieden ist es allge¬ mein bekannt, ausgehend vom Halbzeug durch Rundkneten, Formrecken, Anstauchen, Reck- oder Querwalzen Zwischenformen zu erzeugen, die eine dem Fertigteil angenäherte Masseverteilung aufweisen, mit dem Ziel, eine besser Formfüllung im Gesenk zu erhalten.In the production of corrugated workpieces by drop forging, it is generally known to produce intermediate shapes starting from the semi-finished product by kneading, stretching, upsetting, stretching or transverse rolling, which have a mass distribution approximating that of the finished part, with the aim of better mold filling in the die to obtain.
Die durch diese Verfahren möglichen Querschnittsänderungen an den Zwischenformen sind bezüglich der Längsachse des Werkstückes drehsymmetrisch angeordnet. Nicht drehsym¬ metrische Abschnitte werden im weiteren durch das Schmieden im Gesenk selbst erzeugt, was wiederum zu Formfüllungsproblemen, Überschmiedungen oder zu sehr großen Ge¬ senkbelastungen führen kann.
Der Erfindung liegt die Aufgabe zugrunde, eine Walzvorrichtung der eingangs genannten Art anzugeben, mit der an wellenförmigen Werkstücken bezüglich deren Längsachse gezielt nicht drehsymmetrische Abschnitte erzeugt werden können. Insbesondere soll bei der Herstellung von Zwischenformen für das Gesenkschmieden eine optimale Masseverteilung erreicht werden.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. In particular, optimum mass distribution should be achieved in the manufacture of intermediate dies for drop forging.
Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß zumindest ein an einer Flachbacke angebrachter, in seiner Breite kleiner als die Gesamtlänge des Werkstückes, in seiner in Umfangsrichtung auf dem Werkstück abrollenden Länge kleiner oder gleich dem halben Umfang des Werkstückes und in seiner Höhe entsprechend einer vorgegebenen Exzentrizi¬ tät ausgebildeter Walzblock vorgesehen ist, der bei Bewegung der Flachbacken Werkstoff des auf eine dem Werkstoff entsprechende Schmiedetemperatur erwärmten Werkstückes verdrängt, wobei die Verdrängung des Werkstoffes zur Ausbildung eines nicht drehsymme¬ trischen Abschnittes und gleichzeitig zu einer Längenänderung des Werkstückes oder bei einer seitlichen Begrenzung des Werkstückes zu Aufwalzungen am Werkstück führt.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.
Neben der Möglichkeit der Herstellung von Werkstücken als Fertigteile mit dem bezüglich ih¬ rer Längsachsen gewünschten nicht drehsymmetrischen Abschnitt eignet sich die erfin¬ dungsgemäße Vorrichtung insbesondere zur Herstellung von Werkstücken, die als Zwi¬ schenformen in einem Gesenkschmiede-Verfahren weiterbearbeitet werden. Mit der erfin¬ dungsgemäßen Vorrichtung können Zwischenformen mit einer optimalen Werkstoffmasse¬ verteilung hergestellt werden, so daß eine bessere Formfüliung im Gesenk, eine Herabset¬ zung der Gesenkbelastung sowie Materialeinsparungen durch geringere Gratverluste er¬ reicht werden. Die erfindungsgemäße Vorrichtung ermöglicht eine Minimierung der Anzahl an Umformstufen beim Gesenkschmieden, was wiederum mit Fertigungszeiteinsparungen einhergeht.In addition to the possibility of producing workpieces as finished parts with the non-rotationally symmetrical section desired with respect to their longitudinal axes, 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.
Eine vorteilhafte Ausführungsform der erfindungsgemäßen Vorrichtung besteht darin, daß wechselseitig mehrere Walzblöcke auf den Flachbacken angeordnet sind. Durch diese Ma߬ nahme kann die Größe der zu erzielenden nicht drehsymmetrischen Querschnittsänderung am Werkstück beeinflußt werden.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.
Eine vorzugsweisen Ausbildungsform der erfindungsgemäßen Vorrichtung besteht auch darin, daß auf dem oder den Flachbacken mehrere im Abstand nebeneinander angeordnete Walzblöcke vorgesehen sind. Hierdurch ist es möglich, mehrere nicht drehsymmetrische Abschnitte längs des Werkstückes zu erzeugen.
Die Erfindung wird nachstehend anhand eines Ausführungsbeispiels und einer zugehörigenA 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
Zeichnung näher erläutert.Drawing explained in more detail.
In der Zeichnung zeigenShow in the drawing
Figur 1 ein zwischen zwei Flachbacken abgelegtes wellenförmiges Werkstück mit zunächst noch kreisförmigem Querschnitt und1 shows a wavy workpiece placed between two flat jaws, initially with a circular cross section and
Figur 2 die Stellung der Flachbacken mit dem Werkstück unmittelbar nach Ausbil¬ dung eines nicht drehsymmetrischen Abschnittes am Werkstück.2 shows the position of the flat jaws with the workpiece immediately after the formation of a non-rotationally symmetrical section on the workpiece.
In Figur 1 ist mit 1 ein aus einem metallischen Werkstoff bestehendes, auf eine vorgegebene Länge geschnittenes oder geschertes wellenförmiges Werkstück bezeichnet. Dieses Werk¬ stück 1 mit zunächst kreisförmigem Querschnitt wurde, nachdem es eine Erwärmung auf eine dem Werkstoff entsprechende Schmiedetemperatur erfahren hat, wie in Figur 1 darge¬ stellt, zwischen zwei Flachbacken 2a und 2b abgelegt. Werden die Flachbacken 2a und 2b - wie es die Reile in der Zeichnung andeuten - synchron, in parallelen Ebenen gegeneinander und tangential am Werkstück 1 bewegt, so dreht sich das Werkstück 1 in der in der Zeich¬ nung gleichfalls mit einem Reil bezeichneten Richtung. Bei dieser Bewegung sorgt nun ein am unteren Flachbacken 2b angebrachter, in seiner Breite kleiner als die Gesamtlänge des Werkstückes 1 und in seiner in Umfangsrichtung auf dem Werkstück 1 abrollenden Länge gleich dem halben Umfang des Werkstückes 1 ausgebildeter Walzblock 3 dafür, daß Werk¬ stoff am Werkstück 1 verdrängt wird, und am Werkstück 1 bezüglich dessen Längsachse 4 ein nicht drehsymmetrischer Abschnitt 5 entsteht (Figur 2). Die erreichte Exzentrizität hängt dabei von der gewählten Höhe und die Breite des nicht drehsymmetrischen Abschnittes 5 von der Breite des Walzblockes 3 ab. Die Verdrängung des Werkstoffes führt gleichzeitig zu einer Längenänderung oder bei seitlicher Begrenzung des Werkstückes 1 zu Aufwalzungen, d.h. zu Vergrößerungen des Durchmessers. Die Aufwalzungen müssen dabei in ihrer Breite kleiner als die aus Länge des Werkstückes 1 und Breite des Walzblockes 3 gebildete Diffe¬ renz gehalten werden.In FIG. 1, 1 denotes a wavy workpiece consisting of a metallic material, cut or sheared to a predetermined length. This workpiece 1 with an initially circular cross-section, after it has been heated to a forging temperature corresponding to the material, as shown in FIG. 1, was placed between two flat jaws 2a and 2b. If the flat jaws 2a and 2b - as indicated by the ropes in the drawing - are moved synchronously, in parallel planes against each other and tangentially on the workpiece 1, the workpiece 1 rotates in the direction likewise indicated by a rope in the drawing. During this movement, 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.
Durch wechselseitige Anordnung mehrerer Walzblöcke 3 und zwar sowohl auf dem unteren als auch auf dem oberen Flachbacken 2b bzw. 2a kann die Größe der zu erzielenden nicht drehsymmetrischen Querschnittsänderung beeinflußt werden.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.
Es ist auch denkbar, mehrere Walzblöcke 3 auf dem bzw. den Flachbacken 2a bzw. 2b im Abstand nebeneinander anzuordnen, so daß mehrere, gegebenenfalls in ihrer Exzentrizität unterschiedliche, nebeneinander liegende nicht drehsymmetrische Abschnitte längs des Werkstückes 1 entstehen.
Die beschriebene Walzvorrichtung ermöglicht die Herstellung von Fertigteilen, sie ist aber auch insbesondere zur Herstellung optimierter Zwischenformen für bestimmte Teilefamilien geeignet, die in einem Gesenkschmiedeverfahren hergestellt werden.
It is also conceivable to arrange 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.
Claims
Walzvorrichtung zur Herstellung von wellenförmigen Werkstücken aus metallischem Werkstoff, die zwei Flachbacken aufweist, die synchron, in parallelen Ebenen gegen¬ einander und tangential am sich dabei um seine Längsachse drehenden Werkstück bewegbar sind,Rolling device for producing corrugated workpieces made of metallic material, which has two flat jaws which can be moved synchronously, in parallel planes against each other and tangentially on the workpiece rotating about its longitudinal axis,
d a d u r c h g e k e n n z e i c h n e t,characterized,
daß zumindest ein an einer Flachbacke (2b) angebrachter, in seiner Breite kleiner als die Gesamtlänge des Werkstückes (1), in seiner in Umfangsrichtung auf dem Werk¬ stück (1) abrollenden Länge kleiner oder gleich dem halben Umfang des Werkstückes (1) und in seiner Höhe entsprechend einer vorgegebenen EΞxzentrizität ausgebildeter Walzblock (3) vorgesehen ist, der bei Bewegung der Flachbacken Werkstoff des auf eine dem Werkstoff entsprechende Schmiedetemperatur erwärm¬ ten Werkstückes (1) verdrängt, wobei die Verdrängung des Werkstoffes zur Ausbil¬ dung eines nicht drehsymmetrischen Abschnittes und gleichzeitig zu einer Län¬ genänderung des Werkstückes (1) oder bei einer seitlichen Begrenzung des Werk¬ stückes (1) zu Aufwalzungen am Werkstück (1) führt. that at least one attached to a flat jaw (2b), smaller in width than the total length of the workpiece (1), in its circumferential length on the workpiece (1) rolling length less than or equal to half the circumference of the workpiece (1) and In terms of its height, a roll block (3) designed according to a predetermined eccentricity is provided, which displaces material of the workpiece (1) heated to a forging temperature corresponding to the material when the flat jaws move, the displacement of the material to form a non-rotationally symmetrical section and at the same time leads to a change in length of the workpiece (1) or, in the event of a lateral limitation of the workpiece (1), to rolling on the workpiece (1).
2. Walzvorrichtung nach Anspruch 1 ,2. Rolling device according to claim 1,
dadurch gekennzeichnet,characterized,
daß wechselseitig mehrere Walzblöcke 3 auf den Flachbacken (2a, 2b) angeordnet sind.that mutually a plurality of blocks 3 are arranged on the flat jaws (2a, 2b).
3. Walzvorrichtung nach Anspruch 1 oder 2,3. Rolling device according to claim 1 or 2,
dadurch gekennzeichnet,characterized,
daß auf dem oder den Flachbacken (2a, 2b) mehrere im Abstand nebeneinander angeordnete Walzblöcke (3) vorgesehen sind. that on the one or more flat jaws (2a, 2b) a plurality of roll blocks (3) arranged next to one another are provided.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19924229123 DE4229123C2 (en) | 1992-09-01 | 1992-09-01 | Rolling device for the production of corrugated workpieces made of metallic material |
| DEP4229123.2 | 1992-09-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1994005446A1 true WO1994005446A1 (en) | 1994-03-17 |
Family
ID=6466945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP1993/002343 WO1994005446A1 (en) | 1992-09-01 | 1993-08-30 | Rolling device for producing corrugated pieces made of a metallic material |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE4229123C2 (en) |
| WO (1) | WO1994005446A1 (en) |
Citations (7)
| 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 (en) * | 1973-06-01 | 1975-08-05 | Центральное Конструкторское Бюро С Опытным Производством Ан Белор.Сср | Cross wedge rolling tool |
| SU1232347A1 (en) * | 1984-10-08 | 1986-05-23 | Физико-технический институт АН БССР | Method of producing shafts with eccentric stages |
| GB2188573A (en) * | 1986-04-02 | 1987-10-07 | Nissan Motor | Method of and device for forming asymmetrical articles by rolling |
| SU1417981A1 (en) * | 1987-01-29 | 1988-08-23 | Физико-технический институт АН БССР | Method of manufacturing forgings of universal joint center crosses |
| SU1488086A1 (en) * | 1987-03-23 | 1989-06-23 | Научно-Производственное Объединение По Кузнечно-Прессовому Оборудованию И Гибким Производственным Системам Для Обработки Давлением "Эникмаш" | Method of producing stepped-section articles with non-round section portions |
| JPH0366439A (en) * | 1989-08-04 | 1991-03-22 | Nissan Motor Co Ltd | Form-rolling device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE45389C (en) * | AMERICAN Screw Co. by Edwin G. Awgell President in New-York | Thread rolling machine with straight rolling dies |
-
1992
- 1992-09-01 DE DE19924229123 patent/DE4229123C2/en not_active Expired - Fee Related
-
1993
- 1993-08-30 WO PCT/EP1993/002343 patent/WO1994005446A1/en active Application Filing
Patent Citations (7)
| 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 (en) * | 1973-06-01 | 1975-08-05 | Центральное Конструкторское Бюро С Опытным Производством Ан Белор.Сср | Cross wedge rolling tool |
| SU1232347A1 (en) * | 1984-10-08 | 1986-05-23 | Физико-технический институт АН БССР | Method of producing shafts with eccentric stages |
| GB2188573A (en) * | 1986-04-02 | 1987-10-07 | Nissan Motor | Method of and device for forming asymmetrical articles by rolling |
| SU1417981A1 (en) * | 1987-01-29 | 1988-08-23 | Физико-технический институт АН БССР | Method of manufacturing forgings of universal joint center crosses |
| SU1488086A1 (en) * | 1987-03-23 | 1989-06-23 | Научно-Производственное Объединение По Кузнечно-Прессовому Оборудованию И Гибким Производственным Системам Для Обработки Давлением "Эникмаш" | Method of producing stepped-section articles with non-round section portions |
| JPH0366439A (en) * | 1989-08-04 | 1991-03-22 | Nissan Motor Co Ltd | Form-rolling device |
Non-Patent Citations (5)
| 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 |
|---|---|
| DE4229123C2 (en) | 1995-06-14 |
| DE4229123A1 (en) | 1994-03-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE102008038185B3 (en) | Method and device for the production of fastening or connecting means with radial outer contours, in particular screws or threaded bolts | |
| EP2440341B1 (en) | Method and device for producing elongated metal components having helical grooves, such as twist drills or worm screws | |
| DE19716292C2 (en) | Extrusion device | |
| EP2641673B1 (en) | Method and apparatus for producing a connecting section as part of a tool | |
| DE2549230A1 (en) | METHOD OF MANUFACTURING A TUBULAR, STRAIGHT OR ANGLED INTERNAL AND EXTERNAL PROFILES | |
| DE69317757T2 (en) | METHOD FOR RADIAL FORGING A BLANK | |
| DE4292014C2 (en) | Method of making a long high pressure fuel line | |
| DE2049889A1 (en) | Rear axle bridge for motor vehicles as well as method and device for the production thereof | |
| DE3711034C2 (en) | ||
| EP1689556B1 (en) | Cold forming method for producing ball journals | |
| EP3221068B1 (en) | Method for manufacturing a rotationally symmetrical shaped article | |
| DE2712536C2 (en) | Process for the production of several parallel metal wires and rods with a round cross-section and an extrusion die for carrying out the process | |
| AT505150B1 (en) | multiple wheel | |
| DE10248356A1 (en) | Method and device for producing a weight-optimized pneumatic tire rim | |
| EP1181119B1 (en) | Method and device for flow turning | |
| WO1994005446A1 (en) | Rolling device for producing corrugated pieces made of a metallic material | |
| DE2044815B2 (en) | METHOD OF MANUFACTURING SEAMLESS STEEL PIPE | |
| DE102006031564A1 (en) | Method for producing a rotationally symmetrical part, in particular shaft | |
| DE69808879T2 (en) | Device for cleaning wire for the production of drawn metal wires | |
| DE19835478C2 (en) | Process and device for producing seamless wheel tires | |
| DE3401595C2 (en) | ||
| DE19744787A1 (en) | Self-piercing rivet and process for its production | |
| WO1999036206A1 (en) | Method and device for producing hollow bodies by means of cross-rolling | |
| AT513701B1 (en) | Method for forging a workpiece | |
| EP0893177B1 (en) | Method for the production of a toothed workpiece |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AK | Designated states |
Kind code of ref document: A1 Designated state(s): JP KR US |
|
| AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
| 122 | Ep: pct application non-entry in european phase |