ES476375A1 - Un dispositivo de hilera o matriz de estirado en frio. - Google Patents

Un dispositivo de hilera o matriz de estirado en frio.

Info

Publication number
ES476375A1
ES476375A1 ES476375A ES476375A ES476375A1 ES 476375 A1 ES476375 A1 ES 476375A1 ES 476375 A ES476375 A ES 476375A ES 476375 A ES476375 A ES 476375A ES 476375 A1 ES476375 A1 ES 476375A1
Authority
ES
Spain
Prior art keywords
cold drawing
die
polygonal shapes
round bar
polygons
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
ES476375A
Other languages
English (en)
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.)
BARNABO STEEL CORP
Original Assignee
BARNABO STEEL CORP
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 BARNABO STEEL CORP filed Critical BARNABO STEEL CORP
Publication of ES476375A1 publication Critical patent/ES476375A1/es
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels for metal drawing
    • B21C3/02—Dies; Selection of material therefor; Cleaning thereof
    • B21C3/04—Dies; Selection of material therefor; Cleaning thereof with non-adjustable section

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Extraction Processes (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

El presente proporciona una hilera de estirado en frío mejorada para fabricar barras de forma poligonal a partir de material redondo, en la que se eliminan los defecto de borde y pueden producirse formas exactamente definidas con una fuerza de estirado sustancialmente equivalente a la de la técnica anterior. En general, esto se consigue porporcionando una hilera que tiene una zona de apoyo poligonal con al menos un lado recto, y una zona de entrada caracterizada por una abertura inicial o zona de contacto totalmente redonda y planos de conformación tangenciales a la abertura redonda, que conducen gradualmente a los lados recto de tal manera que se mantenga el contacto circunferencial completo continuo entre la hilera y el material durante toda la operación de estirado. En una realización específica descrita en lo que sigue, la zona de entrada tiene una sección transversal circular en su extremo anterior. Contiene planos de conformación semielípticos en número igual al de lados rectos de laforma acabada, y esquinas de conformación que conducen gradualmente al vértice de las esquinas de apoyo. Los planos de conformación forman ángulo hacia dentro desde la zona de contacto circular inicial para encontrarse con los lados de la zona de apoyo. El plano de conformación preferido de este invento formará angulo , de valores sucesivamente menores, con el eje geométrico de la hilera a medida que se aproxime a la zona de apoyo, pero este invento cubre también un plano de conformación plano con un ángulo fijo con respecto al eje geométrico de la hilera. Tal como se utiliza en esta memoria, el término" polígono"se refiere a cualquier sección de múltiples caras, incluyendo aquéllas con una o más partes que no sean planas.
ES476375A 1977-12-30 1978-12-27 Un dispositivo de hilera o matriz de estirado en frio. Expired ES476375A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US86612977A 1977-12-30 1977-12-30

Publications (1)

Publication Number Publication Date
ES476375A1 true ES476375A1 (es) 1979-07-16

Family

ID=25346974

Family Applications (1)

Application Number Title Priority Date Filing Date
ES476375A Expired ES476375A1 (es) 1977-12-30 1978-12-27 Un dispositivo de hilera o matriz de estirado en frio.

Country Status (7)

Country Link
JP (1) JPS5496460A (es)
AR (1) AR216715A1 (es)
CA (1) CA1076522A (es)
DE (1) DE2855869A1 (es)
ES (1) ES476375A1 (es)
FR (1) FR2413143A1 (es)
GB (1) GB2011299B (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU204312B (en) * 1985-11-26 1991-12-30 December 4 Drotmuevek Stretching staple for stressed concrete structures
JPS6390515U (es) * 1986-11-26 1988-06-11
JP2008290107A (ja) * 2007-05-24 2008-12-04 Sumitomo Electric Ind Ltd 電線加工用のダイス及び異形電線

Also Published As

Publication number Publication date
JPS5496460A (en) 1979-07-30
FR2413143A1 (fr) 1979-07-27
CA1076522A (en) 1980-04-29
AR216715A1 (es) 1980-01-15
GB2011299B (en) 1982-04-21
FR2413143B3 (es) 1982-12-03
DE2855869A1 (de) 1979-07-05
GB2011299A (en) 1979-07-11

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19971201