DE572589C - Method for straightening bars and sheets made of stretchable metal - Google Patents

Method for straightening bars and sheets made of stretchable metal

Info

Publication number
DE572589C
DE572589C DEF62928D DEF0062928D DE572589C DE 572589 C DE572589 C DE 572589C DE F62928 D DEF62928 D DE F62928D DE F0062928 D DEF0062928 D DE F0062928D DE 572589 C DE572589 C DE 572589C
Authority
DE
Germany
Prior art keywords
sheets made
stretchable metal
straightening bars
sheets
straightening
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
DEF62928D
Other languages
German (de)
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.)
Individual
Original Assignee
Individual
Publication date
Priority to DEF62928D priority Critical patent/DE572589C/en
Application granted granted Critical
Publication of DE572589C publication Critical patent/DE572589C/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
    • B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts

Landscapes

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

Description

Die Erfindung betrifft ein Verfahren zum Richten von Stäben und Blechen aus streckbarem Metall.The invention relates to a method for straightening bars and sheets of stretchable material Metal.

Man hat bereits vorgeschlagen; die Stäbe oder Bleche bis über ihre Elastizitätsgrenze zu strecken. Es hat sich aber gezeigt, daß hiermit allein nicht auszukommen ist, sondern daß ein nicht unbeträchtlicher Teil der zu richtenden Stücke nach dem Streckein nicht geradebleibt. Vermutlich wirken in solchen Stücken noch Spannungen, insbesondere der Walzhaut, die durch die Streckung nicht überwunden werden.It has already been suggested; the rods or sheets up to their elastic limit to stretch. It has been shown, however, that this alone is not enough, but that a not inconsiderable part of the pieces to be straightened after stretching does not stay straight. Presumably there are still tensions at work in such pieces, especially the rolled skin, which are not overcome by the stretching.

Erfindungsgemäß werden deshalb die zu richtenden Stücke vor der Streckung durch Zug, der an den beiden Enden des zu richtenden Werkstückes angreift, einer zusätzlichen Einwirkung unterworfen. Durch diese sollen die schädlichen Spannungen im Werkstück in an sich bekannter. Weise durch mechanische Einwirkung auf die Außenschicht der zu richtenden Stücke, beispielsweise durch Walzen, Schlagen, Knicken, Biegen oder Ritzen, gelöst werden.According to the invention, the pieces to be straightened are therefore through before stretching Train that engages both ends of the workpiece to be straightened, an additional one Subject to action. This should reduce the harmful stresses in the workpiece in itself known. Way by mechanical action on the outer layer the pieces to be straightened, for example by rolling, hitting, kinking, bending or Cracks to be loosened.

Als hinreichend hat sich bei Rundmetall gezeigt, den zu richtenden Stab vor der Strekkung durch zwei flache Walzen laufen zu lassen, die zwei ganz geringe Abflachungen oder Rillen erzeugen. Diese beeinflussen vermutlich die Walzhaut bereits so, daß ihre Spannung, die möglicherweise durch das Strecken allein nicht überwunden werden kann, das Richten nicht mehr stört.With Rundmetall, it has been shown that the rod to be straightened before the stretching is sufficient to run through two flat rollers that create two very small flats or grooves. These presumably influence the rolling skin already so that its tension, which may not be overcome by stretching alone can no longer bother straightening.

In der Zeichnung ist dies schematisch dargestellt. This is shown schematically in the drawing.

Abb. ι zeigt in Stirnansicht die Bearbeitung eines Rundstabes ι durch zwei Walzen 2, welche an seiner Oberfläche zwei Abflachungen 3 erzeugen.Fig. Ι shows in front view the processing of a round rod ι by two rollers 2, which produce two flats 3 on its surface.

Abb. 2 zeigt in derselben Darstellungsweise die Einarbeitung zweier Rillen 4 durch zwei entsprechend geformte Walzen 5.Fig. 2 shows the incorporation of two grooves 4 in the same manner of representation two appropriately shaped rollers 5.

Bei anderen Profilen sind die Stellen für die Einwirkung zur Lösung dieser Spannungen durch Versuch zu ermitteln.In the case of other profiles, the points for the action are to relieve these tensions to be determined by trial.

Bei Blechen gilt Entsprechendes. Sie werden beispielsweise zweimal in entgegengesetztem Sinne gebogen, eTie sie gestreckt werden. The same applies to sheet metal. For example, you will be in opposite twice Meaning bent, eTie they are stretched.

Claims (3)

Patentansprüche:Patent claims: 1. Verfahren zum Richten von Stäben und Blechen aus streckbarem Metall durch Strecken, dadurch gekennzeichnet, daß die Werkstücke zunächst gleichmäßig über ihre gesamte Länge derart mechanisch bearbeitet werden, daß die inneren Spannungen beseitigt werden und daß sie dann diirch Zug gestreckt werden.1. Procedure for straightening bars and sheets made of stretchable metal Stretch, characterized in that the workpieces initially evenly over their entire length are machined so that the internal stresses are eliminated and that they are then stretched out. 2. Verfahren nach Anspruch i, dadurch ß0 gekennzeichnet, daß in das Werkstück eine ganz geringe Abflachung oder Rille vor dem Strecken eingewalzt wird.2. The method according to claim i, characterized ß 0 , that a very small flattening or groove is rolled into the workpiece before stretching. 3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß Bleche vor dem 6g Strecken gebogen werden.3. The method according to claim 1, characterized in that sheets in front of the 6g Stretch can be bent. Hierzu 1 Blatt Zeichnungen1 sheet of drawings
DEF62928D Method for straightening bars and sheets made of stretchable metal Expired DE572589C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF62928D DE572589C (en) Method for straightening bars and sheets made of stretchable metal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF62928D DE572589C (en) Method for straightening bars and sheets made of stretchable metal

Publications (1)

Publication Number Publication Date
DE572589C true DE572589C (en) 1933-03-18

Family

ID=7109644

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF62928D Expired DE572589C (en) Method for straightening bars and sheets made of stretchable metal

Country Status (1)

Country Link
DE (1) DE572589C (en)

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