DE574827C - Procedure for leveling thin sheets - Google Patents

Procedure for leveling thin sheets

Info

Publication number
DE574827C
DE574827C DEN34222D DEN0034222D DE574827C DE 574827 C DE574827 C DE 574827C DE N34222 D DEN34222 D DE N34222D DE N0034222 D DEN0034222 D DE N0034222D DE 574827 C DE574827 C DE 574827C
Authority
DE
Germany
Prior art keywords
sheets
thin sheets
procedure
leveling
leveling thin
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
DEN34222D
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
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 Individual filed Critical Individual
Priority to DEN34222D priority Critical patent/DE574827C/en
Application granted granted Critical
Publication of DE574827C publication Critical patent/DE574827C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D1/00Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B21D1/02Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)

Description

Verfahren beim Ebnen dünner Bleche Die Erfindung betrifft ein Verfahren beim Ebnen dünner Bleche.Method for flattening thin metal sheets The invention relates to a method when leveling thin sheets.

Beim Walzen dünner Bleche und bei deren Verarbeitung tritt der Mangel auf, daß sich die Bleche verwinden oder auch Beulen bekommen. Dünne Bleche aus weichen Metallen sind ferner gegen Stöße sehr empfindlich. Es entstehen leicht Eindrücke. In manchen Fällen werden solche Eindrücke in Form flacher Prägungen absichtlich herbeigeführt, so z. B. bei den sogenannten Metallfolien und Metallpapierfolien, die zurr Zwecke der Vervielfältigung mit der Schreibmaschine beschrieben werden.The defect occurs when rolling thin sheets and when processing them on that the sheets twist or get bumps. Thin sheets of soft Metals are also very sensitive to impact. Impressions are easily made. In some cases, such flat embossing impressions are made on purpose brought about, so z. B. with the so-called metal foils and metal paper foils, written on with a typewriter for the purpose of reproduction.

In allen diesen Fällen besteht das Bedürfnis, diese Bleche zu richten oder zu ebnen. Das Richten oder Ebnen der Bleche wird z. Zt. auf verschiedene Weise durchgeführt. Manchmal werden die Bleche geglüht, gehämmert oder -gebeizt, um die auftretenden Spannungsfelder zu zerstören. Bei vorhandenen Eindrücken und Flachprägungen geht man auch so vor, daB man die Eidrücke mit Hilfe eines harten, spitzen Gegenstandes schrittweise zurückdrückt. Es -ist auch bekannt, Bleche dadurch zu richten, äaß man auf ihre eine Seite viele nadelförmige Spitzen, welche mit einem Stempel (Matrize oder Patrize) fest verbunden sind, zur Einwirkung kommen läßt.In all of these cases there is a need to straighten these sheets or to level. The straightening or leveling of the sheets is z. Currently in different ways carried out. Sometimes the sheets are annealed, hammered or pickled to get the to destroy the stress fields that arise. With existing impressions and flat embossing one also proceeds in such a way that one takes the oath impressions with the help of a hard, pointed object gradually pushes back. It is also known to straighten sheet metal in this way on one side there are many needle-shaped points, which are fixed with a punch (die or patrix) are firmly connected, can come into effect.

Diese Verfahren haben einmal den Nachteil, sehr zeitraubend zu sein, und zum anderen den, daß besonders beim Glühen, Beizen und Hämmern beide Seiten der Bleche in Mitleidenschaft gezogen werden. Das Verfahren, bei welchem man auf eine Seite nadelförmige Spitzen zur Einwirkung kommen läßt, findet seine Anwendungsgrenze dort, wo die zu beseitigenden Spannungsfelder und Unebenheiten so klein werden, daß ihre Ausdehnung nur noch einen Millimeter oder Bruchteile davon beträgt. Solche Fälle sind besonders häufig bei sehr dünnen Blechen aus weichen Metallen, sogenannten Metallfolien. Wollte man .das beschriebene Verfahren hier zur Anwendung bringen, dann müßte man sehr feine Nadeln von einem Millimeter Durchmesser oder Bruchteile davon zur Anwendung bringen, die infolge ihrer festen Einspannung abbrechen müßten.These procedures have the disadvantage of being very time-consuming, and on the other hand that both sides are particularly important when it comes to annealing, pickling and hammering the sheets are affected. The procedure by which one is on one side allows needle-shaped tips to act, finds its application limit where the areas of tension and unevenness to be eliminated are so small, that their extension is only a millimeter or a fraction of it. Such Cases are particularly common with very thin sheets of soft metals, so-called Metal foils. If you wanted to apply the method described here, then one would have to have very fine needles of a millimeter in diameter or fractions bring them to use, which would have to break off due to their fixed clamping.

Die vorliegende Erfindung beseitigt diese Nachteile. Sie geht von dem Gedanken aus,. daß die aufeinanderfolgende Einwirkung oder die gleichzeitige Einwirkung-großer Massen harter Spitzen auf wenigstens eine Seite der Fläche die 'Zerstörung der Spannungsfelder und die Beseitigung vorhandener Flachprägungen herbeiführt, ohne daß die andere Seite der Fläche in ihrer Oberflächenbeschaffenheit im geringsten verändert wird, wenn die nadelförmigen Spitzen nicht fest eingespannt, sondern nachgiebig eingebettet werden.The present invention overcomes these disadvantages. She goes from from the thought. that the successive action or the simultaneous Great masses of hard tips acting on at least one side of the surface '' Destroys the areas of tension and removes existing flat embossing, without affecting the other side of the surface in the slightest in terms of its surface properties is changed when the needle-shaped tips are not firmly clamped, but rather flexible be embedded.

Eine solche nachgiebige Einbettung großer Massen von Spitzen findet sich im Verkehr bereits vor, z. B. in dem bekannten Glas-,-Sand- oder Schmirgelpapier oder Schmirgelleinen.- Preßt oder walzt man dünne Bleche, z: B. mit Glas-, Sand- oder Schmirgelpapier, oder überzieht man wenigstens eine Preßpla:tte oder wenigstens eine Walze mit solchen Stoffen, so kann man auf diese Weise die gewünschte Ebnnrig erzielen.Such a resilient embedding of large masses of tips takes place in traffic already before, z. B. in the well-known glass -, - sand or emery paper - If you press or roll thin sheets, e.g. with glass, sand or or sandpaper, or at least one covers a press plate or at least a roller with such substances, so you can in this way the Achieve desired level.

Durch geeignete Wahl des Druckes und durch geeigneten Feinheitsgrad der Körnung ist es möglich, die Ebnung zu erreichen, ohne daß die von der Körnung abgewandte Seite des Bleches in ihrer Oberflächenbeschaffenheit beeinftußt wird. Das Verfahren ist einfach, billig, zuverlässig und erfordert wenig Zeit.Through a suitable choice of pressure and through a suitable degree of fineness With the grain it is possible to achieve the leveling without affecting the grain remote side of the sheet is influenced in their surface properties. The process is simple, cheap, reliable and takes little time.

Claims (1)

PATENTANSPRUCH: Verfahren beim Ebnen dünner Bleche mittels Einwirkung einer großen Anzahl nadelförmiger Spitzen, dadurch gekennzeichnet, daß die Bleche einem Preß- oder Walzverfahren unterzogen werden, bei welchem wenigstens auf eine Seite des Bleches ein feinkörniges und nachgiebig eingebettetes Mittel, z. B. Sandpapier. Glaspapier, Schmirgelpapier, Schmirgelleinen, einwirkt.PATENT CLAIM: Process for leveling thin sheets by means of action a large number of needle-shaped tips, characterized in that the sheets be subjected to a pressing or rolling process, in which at least one Side of the sheet a fine-grained and resiliently embedded agent, e.g. B. sandpaper. Glass paper, emery paper, emery cloth.
DEN34222D 1932-09-28 1932-09-28 Procedure for leveling thin sheets Expired DE574827C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEN34222D DE574827C (en) 1932-09-28 1932-09-28 Procedure for leveling thin sheets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEN34222D DE574827C (en) 1932-09-28 1932-09-28 Procedure for leveling thin sheets

Publications (1)

Publication Number Publication Date
DE574827C true DE574827C (en) 1933-04-20

Family

ID=7346714

Family Applications (1)

Application Number Title Priority Date Filing Date
DEN34222D Expired DE574827C (en) 1932-09-28 1932-09-28 Procedure for leveling thin sheets

Country Status (1)

Country Link
DE (1) DE574827C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE893486C (en) * 1942-11-13 1953-10-15 Helmut Junghans Dr Ing Method for flattening gears for precision mechanical gears that are already set on their shafts
DE912716C (en) * 1948-09-06 1954-06-03 Ingenioers N H F Rost & Soener Elastic, metallic leaf spring for electrical switchgear

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE893486C (en) * 1942-11-13 1953-10-15 Helmut Junghans Dr Ing Method for flattening gears for precision mechanical gears that are already set on their shafts
DE912716C (en) * 1948-09-06 1954-06-03 Ingenioers N H F Rost & Soener Elastic, metallic leaf spring for electrical switchgear

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