DE616893C - - Google Patents

Info

Publication number
DE616893C
DE616893C DENDAT616893D DE616893DA DE616893C DE 616893 C DE616893 C DE 616893C DE NDAT616893 D DENDAT616893 D DE NDAT616893D DE 616893D A DE616893D A DE 616893DA DE 616893 C DE616893 C DE 616893C
Authority
DE
Germany
Prior art keywords
rollers
pointed
rolling
resolution
tube
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.)
Active
Application number
DENDAT616893D
Other languages
German (de)
Publication of DE616893C publication Critical patent/DE616893C/de
Active legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B19/00Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
    • B21B19/12Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially parallel to the axis of the work
    • B21B19/14Rolling tubes by means of additional rollers arranged inside the tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)

Description

Deutsche Röhrenwerke Akt.-Ges. in Düsseldorf*)Deutsche Röhrenwerke Akt.-Ges. In Dusseldorf*)

Rohrwalzwerk mit Außen- und InnenwälzenTube rolling mill with external and internal rolls

Patentiert im Deutschen Reiche vom 25. November 1933 abPatented in the German Empire on November 25, 1933

Es sind Rohrwalzwerke mit Außen- und Iimenwalzen bekannt, bei denen die Kalibrierung der Innenwalzen der Auflösung eines zugespitzten Domes entspricht. Bei diesen wird der Werkstoff in der Richtung des Rohrumfanges gestreckt, wobei die Innenwalzen nicht nur als Widerlager des von außen wirkenden Druckes dienen, sondern gleichzeitig in ihrem zugespitzten Teil als formänderndes Werkzeug wirken. Die Auflösung des zugespitzten Domes in die Form entsprechend kalibrierter Innenwalzen hat gleichzeitig den Vorteil, daß die Reibungswiderstande zwischen dem Walzgut und dem Dorn gering bleiben.There are tube rolling mills with outer and Iimenwalzen known in which the calibration the inner roll corresponds to the resolution of a pointed dome. With these the material is stretched in the direction of the pipe circumference, with the inner rollers not only serve as an abutment for the external pressure, but at the same time act in their pointed part as a shape-changing tool. The dissolution of the acute Domes in the form of appropriately calibrated inner rollers also has the advantage that the frictional resistance between the rolling stock and the mandrel remain low.

Jedoch besitzt dieses bekannte Rohrwalzwerk den Nachteil, daß das Walzgut, insbesondere beim Beginn der Arbeit, zurückiutschen kann. Zum besseren Erfassen und Halten des Walzgutes wird daher erfindungsgemäß vorgeschlagen, Innenwalzen zu benutzen, deren Kalibrierung der Auflösung eines zugespitzten, in Walzrichtung in seinem Durchmesser stetig wachsenden Domes entspricht. Auch die Außenwalzen können in ähnlicher Weise ausgebildet sein.However, this known tube rolling mill has the disadvantage that the rolling stock, in particular at the beginning of work, can slip back. For better understanding and Holding the rolling stock is therefore proposed according to the invention to use internal rollers, the calibration of which corresponds to the resolution of a pointed dome that is constantly growing in diameter in the rolling direction. The outer rollers can also be designed in a similar manner.

Eine beispielsweise Ausführungsform des Erfindungsgedankens ist in der Zeichnunng dargestellt.An example embodiment of the inventive concept is shown in the drawing shown.

Das Rohr 1 wird zwischen den Innenwalzen 4 und den Außenwalzen 2 erfaßt. Die Innenwalzen sind der Auflösung eines absatzweise zugespitzten Domes entsprechend kalibriert. Der Absatz ist bei 9 angedeutet. Die Innenwalzen 4 sind mittels eines gemeinsamen Walzkopfes 5 über eine Dornstange 6 an der Grundplatte 8 derart gelagert, daß sie gegenüber den im Walzgerüst 7 angeordneten Außenwalzen 2 unverschieblich sind. Die Innenwalzen sind verhindert, sich mit dem Rohr ι um die Rohrachse zu drehen. Die Walzen sind so schräg gestellt, wie es durch den Vorschub des Walzgutes bedingt ist.The pipe 1 is gripped between the inner rollers 4 and the outer rollers 2. the Inner rollers are calibrated according to the resolution of a dome that is sharply pointed. The paragraph is indicated at 9. The inner rollers 4 are by means of a common Rolling head 5 mounted on a mandrel bar 6 on the base plate 8 in such a way that they opposite the arranged in the roll stand 7 outer rolls 2 are immovable. The inner rollers are prevented from getting in contact with the Rotate tube around the tube axis. The reels are as inclined as it is through the advance of the rolling stock is conditioned.

Claims (1)

Patentanspruch:Claim: Rohrwalzwerk mit Außen- und Innenwalzen, dadurch gekennzeichnet, daß die Kalibrierung der Innenwalzen der Auflösung eines zugespitzten, in Walzrichtung in seinem Durchmesser stetig wachsenden Domes entspricht.Tube rolling mill with external and internal rollers, characterized in that the Calibration of the inner rolls of the resolution of a pointed, in the rolling direction Corresponds to domes growing steadily in its diameter. ') Von dem Patentsucher ist als der Erfinder angegeben worden:') The patent seeker stated that the inventor was: ■j~\ "1.77* τ ■ j ~ \ "1.77 * τ O " * ~l\ /T " 7 7 * O "* ~ l \ / T" 7 7 * Ruhr.Dysentery.
DENDAT616893D Active DE616893C (en)

Publications (1)

Publication Number Publication Date
DE616893C true DE616893C (en)

Family

ID=576207

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT616893D Active DE616893C (en)

Country Status (1)

Country Link
DE (1) DE616893C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE747926C (en) * 1936-10-02 1944-10-20 Helical rolling mill
DE915322C (en) * 1951-08-05 1954-07-19 Martin Roeckner Dipl Ing Process for rolling pipes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE747926C (en) * 1936-10-02 1944-10-20 Helical rolling mill
DE915322C (en) * 1951-08-05 1954-07-19 Martin Roeckner Dipl Ing Process for rolling pipes

Similar Documents

Publication Publication Date Title
DE616893C (en)
DE579270C (en) Internal clamping device for processing thin-walled, especially round hollow bodies
DE19922373A1 (en) Ingots used in hot rolling have a double acting hydraulic piston cylinder unit with both ends connected to guide pieces
DE1296934B (en) Hydraulic clamping device for pipes, rods or the like, especially for upsetting presses
AT141826B (en) Tube rolling mill.
DE1452314C3 (en) Hydraulic metal pipe press with stepped mandrel
DE701792C (en) Knurled tool with two knurled wheels
DE926123C (en) Thread rolling machine
DE563466C (en) Rotating device for pilgrim step rolling mills
DE410625C (en) Clamping device for pipe cutting machines
DE1752603A1 (en) Method for operating a fetching device for the production of seamless tubes on a pilgrim step rolling mill and device for carrying out the method
DE630076C (en) Angled rolling mill with an axially displaceable mandrel bar that can be locked in a fixed abutment and is subjected to pressure
DE4242423C1 (en) Pre-reduction device
DE884268C (en) Swivel table for clamping workpieces
DE631887C (en) Clamping device for bars and tubes, especially on shaft turning frames and straightening machines
DE171779C (en)
DE837030C (en) Device for clamping and loosening the clamping device of machine tools
DE671532C (en) Method and device for bending pipes, in particular pipe bends
DE11901C (en) Boiler tube flaring apparatus
DE2002408A1 (en) Device for feeding the blank in pipe cold rolling mills
DD287670B5 (en) WINDING HASP FOR ROLLED WIRE
DE613706C (en) Clamping device for turning benches for processing wheel bandages
AT133308B (en) Method and apparatus for the production of end caps for steel cylinders for compressed gases u. like
DE891532C (en) Process and device for the production of cold pilgrim metal hollow work pieces
DE432615C (en) Hydraulic press for breaking steel blocks and the like like