DE583201C - Process for the production of smooth double-pitched screws (helix) from thin strip - Google Patents

Process for the production of smooth double-pitched screws (helix) from thin strip

Info

Publication number
DE583201C
DE583201C DEK124758D DEK0124758D DE583201C DE 583201 C DE583201 C DE 583201C DE K124758 D DEK124758 D DE K124758D DE K0124758 D DEK0124758 D DE K0124758D DE 583201 C DE583201 C DE 583201C
Authority
DE
Germany
Prior art keywords
production
helix
thin strip
double
smooth double
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
DEK124758D
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.)
HUGO KOSMACK
Original Assignee
HUGO KOSMACK
Publication date
Priority to DEK124758D priority Critical patent/DE583201C/en
Application granted granted Critical
Publication of DE583201C publication Critical patent/DE583201C/en
Expired legal-status Critical Current

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
    • B21H3/00—Making helical bodies or bodies having parts of helical shape
    • B21H3/12—Making helical bodies or bodies having parts of helical shape articles with helicoidal surface

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Of Electric Cables (AREA)

Description

Verfahren zur Herstellung glatter doppelgängiger Schnecken (Wendel) aus dünnem Band Während für die Herstellung eingängiger Spiralen, Schnecken oder Wendel aus Blechstreifen Walzverfahren bekannt sind, wurden doppelgängige Schnecken oder Spiralen bisher auf andere Weise angefertigt, z. B. durch Einschneiden in Rundeisenstangen (Schraubendoppelgewinde) mit beträchtlichem Werkstoffverlust oder durch Verwinden starker Flacheisenbänder (Spiralbohrer).Process for the production of smooth double-start screws (helix) from thin tape While for the production of catchy spirals, snails or Helix from sheet metal strips are known in the rolling process, double-thread screws were used or spirals previously made in other ways, e.g. B. by cutting into round iron bars (Screw double thread) with considerable loss of material or through twisting strong flat iron strips (twist drills).

Es wurde nun gefunden, daß sich das Walzverfahren auch auf die Herstellung von doppelgängigen Spiralen aus dünnen Bändern anwenden läßt. Wird ein bildsames Band von den ursprünglichen Abmessungen l X b X s beispielsweise mittels des in der Abbildung dargestellten Walzwerkes in seiner Längsrichtung so ausgewalzt, daß die Bandstärke s in der Mitte unverändert bleibt, sich aber nach den Bandrändern hin allmählich und gleichmäßig um das n-fache bis auf sIn verjüngt, so wächst bei unveränderlicher Breite b die Bandlänge l von der Bandmitte nach den Rändern hin gleichmäßig bis zum n-fachen auf n/1. Die gelängten Bandränder legen sich dabei zwangsläufig spiralig um die ungelängte Bandmitte herum, und es ist lediglich darauf zu achten, daß hiermit im gleichen Drehsinn begonnen werde. Im Beispielsfalle ist der Durchmesser der so entstandenen doppelgängigen Schraubenfläche gleich b; ihre Steighöhe wird von n bestimmt und ihre Drehachse fällt mit der Mittellinie des Bandes zusammen. Indessen lassen sich mach dem gleichen Verfahren mit geeigneten, gegebenen= falls veränderlichen Walzen- und Bandprofilen auch andere Schneckenformen herstellen, z. B. mit größerem oderkleinerem Durchmesser als b, solche mit Hohlseele, konische Doppelschnecken oder solche mit veränderlicher Steigung.It has now been found that the rolling process can also be applied to the production of double-threaded spirals from thin strips. If a malleable strip of the original dimensions l X b X s is rolled out in its longitudinal direction, for example by means of the rolling mill shown in the figure, so that the strip thickness s remains unchanged in the middle, but gradually and evenly around the n- times tapered down to sIn, with an unchangeable width b the band length l grows evenly from the band center to the edges up to n times to n / 1. The elongated tape edges are inevitably placed in a spiral around the unelonged tape center, and it is only necessary to ensure that this is started in the same direction of rotation. In the example case, the diameter of the double helical surface thus created is equal to b; its height of rise is determined by n and its axis of rotation coincides with the center line of the belt. In the meantime, other screw shapes can also be produced using the same process with suitable, possibly variable roll and strip profiles, e.g. B. with a larger or smaller diameter than b, those with a hollow core, conical twin screws or those with a variable pitch.

Führt das Strecken der Bandränder von der Randstärke s auf die Randstärke s/n in einem Walzgang zu ausführbaren Walzwerkabmessungen, so können in bekannter Weise statt eines mehrere Walzwerke hintereinander zu einer Walzenstraße geschaltet werden.Performs the stretching of the band edges from the edge thickness s to the edge thickness s / n in one rolling process to implementable rolling mill dimensions, so can in known Way instead of one several rolling mills connected one behind the other to form a rolling train will.

Claims (1)

PATENTANSPRUCH Verfahren zur Herstellung glatter doppelgängiger Schnecken (Wendel) aus dünnem Band, dadurch gekennzeichnet, daß die ursprüngliche Bandstärke durch einmaliges oder wiederholtes Auswalzen des Bandes in dessen Längsrichtung von der Mitte des Bandes nach den Bandrändern hin verjüngt wird, wodurch die hierdurch gelängten Bandränder sich um den nicht oder wenig gelängten Bandkern spiralig herumlegen und doppelgängige Schraubenflächen entstehen.PATENT CLAIM Process for the production of smooth double-start screws (Helix) made of thin tape, characterized in that the original tape thickness by rolling out the strip once or repeatedly in its longitudinal direction is tapered from the middle of the band to the band edges, whereby the thereby Elongated tape edges wrap around the little or no elongated tape core in a spiral and double screw surfaces arise.
DEK124758D Process for the production of smooth double-pitched screws (helix) from thin strip Expired DE583201C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK124758D DE583201C (en) Process for the production of smooth double-pitched screws (helix) from thin strip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK124758D DE583201C (en) Process for the production of smooth double-pitched screws (helix) from thin strip

Publications (1)

Publication Number Publication Date
DE583201C true DE583201C (en) 1933-08-30

Family

ID=7245700

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK124758D Expired DE583201C (en) Process for the production of smooth double-pitched screws (helix) from thin strip

Country Status (1)

Country Link
DE (1) DE583201C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE947696C (en) * 1952-09-21 1956-08-23 Wurag Eisen Und Stahlwerke Ag Method and device for producing coils with a thicker cross-section on the inside diameter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE947696C (en) * 1952-09-21 1956-08-23 Wurag Eisen Und Stahlwerke Ag Method and device for producing coils with a thicker cross-section on the inside diameter

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