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DE19529881C1 - Deep drawn sheet steel for vehicle external body - Google Patents

Deep drawn sheet steel for vehicle external body

Info

Publication number
DE19529881C1
DE19529881C1 DE1995129881 DE19529881A DE19529881C1 DE 19529881 C1 DE19529881 C1 DE 19529881C1 DE 1995129881 DE1995129881 DE 1995129881 DE 19529881 A DE19529881 A DE 19529881A DE 19529881 C1 DE19529881 C1 DE 19529881C1
Authority
DE
Germany
Prior art keywords
deep
drawn
spring steel
sheet steel
external body
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 - Fee Related
Application number
DE1995129881
Other languages
German (de)
Inventor
Volker Dr Ing Thoms
Hartmut Prof Dr Ing Hoffmann
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.)
Mercedes Benz Group AG
Original Assignee
Daimler Benz AG
Mercedes Benz AG
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 Daimler Benz AG, Mercedes Benz AG filed Critical Daimler Benz AG
Priority to DE1995129881 priority Critical patent/DE19529881C1/en
Priority to GB9616705A priority patent/GB2304313B/en
Priority to FR9610117A priority patent/FR2737857B1/en
Application granted granted Critical
Publication of DE19529881C1 publication Critical patent/DE19529881C1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
    • 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/201—Work-pieces; preparation of the work-pieces, e.g. lubricating, coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D65/00—Designing, manufacturing, e.g. assembling, facilitating disassembly, or structurally modifying motor vehicles or trailers, not otherwise provided for

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Springs (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

A deep-drawn steel used in body construction comprises a spring steel for the deep-drawn parts, which steel is deep-drawn while heat is being supplied and is brought up to the spring steel quality in the finally shaped state by means of a heat treatment.

Description

Die Erfindung betrifft Tiefziehteile aus Stahlblech für Kraftfahrzeugkarosserien, insbesondere für Karosserieaußenhautteile.The invention relates to deep-drawn parts made of sheet steel for motor vehicle bodies, especially for body shell parts.

Heute werden im Karosseriebau vorzugsweise hochwertige Tiefziehstähle für die außenliegenden Beplankungsteile eingesetzt. Da sich diese Stähle wegen der niedrigen Fließgrenze des Werkstoffes sehr gut umformen lassen, führen zwangsläufig Bagatellschäden bei der Fertigung, insbesondere aber im Gebrauch zu bleibenden Verformungen. Kleinere Stöße, z. B. beim Einparken auf Parkplätzen o. dgl., führen zum Einbeulen und lassen sich nur mir relativ großen Aufwand wieder entfernen.Today, high-quality deep-drawing steels are preferred in body construction used for the external cladding parts. There these steels because of the low yield point of the material can be formed very well, inevitably lead to minor damage in manufacturing, but especially in use Deformations. Minor bumps, e.g. B. when parking in parking lots or the like, lead to denting and can only be relative to me remove great effort.

Es ist deshalb auch bekannt, für Beplankungsteile von Fahrzeugkarosserien Kunststoffteile zu verwenden, weil diese sich nicht so leicht bleibend deformieren lassen bzw. nach einer Belastung federnd zurückspringen. Die von solchen Kunststoffteilen aufnehmbare Verformungsarbeit ist aber verhältnismäßig gering.It is therefore also known for cladding parts of vehicle bodies Use plastic parts because they are not allow it to remain easily deformed or springy after a load jump back. The recordable from such plastic parts Deformation work is relatively small.

Bekannt ist es schließlich auch (Zeitschrift "Krafthand", Heft 4 vom 15. 02. 86, Seiten 151 bis 159), höherfeste Stähle im Karosseriebau zu verwenden, die zwar bei Reparaturarbeiten zunächst einen größeren Aufwand erforderlich machen, aber dennoch weniger schadensanfällig sind.Finally, it is also known (magazine "Krafthand", issue 4 from 02.15.86, pages 151 to 159), high-strength steels in the body shop to be used, the first one for repair work Make more effort necessary, but less are prone to damage.

Die DE 24 49 240 A1 offenbart Karosserieteile aus Federstahlblech, jedoch sind diese nicht tiefgezogen, sondern nur abgewinkelt.DE 24 49 240 A1 discloses body parts made of spring steel sheet, but these are not deep drawn, just angled.

Der Erfindung liegt demgegenüber die Überlegung zugrunde, für Tiefziehteile der eingangs genannten Art, d. h. also insbesondere für Karosserieaußenhautteile, einen härtbaren Federstahl zu verwenden, der die gleichen Effekte wie ein Kunststoff bezüglich seiner Federungseigenschaften hat, aber wegen der wesentlich größeren Kräfte, die zu seiner Verformung notwendig sind, auch zu einer verbesserten passiven Sicherheit führen kann, weil die aufzuwendenden Knautschkräfte wesentlich größer sind.The invention is based on the consideration for Deep-drawn parts of the type mentioned at the beginning, d. H. so especially for body outer skin parts to use a hardenable spring steel,  which has the same effects as a plastic has its suspension properties, but because of the essential larger forces that are necessary for its deformation, too can lead to improved passive safety because the crushing forces to be applied are significantly greater.

Es hat sich als besonders vorteilhaft erwiesen, zur Herstellung von Tiefziehteilen nach der Erfindung den Federstahl im Warmzustand des Bleches tiefzuziehen und erst im fertig geformten Zustand durch eine Wärmebehandlung auf seine Federstahlhärte zu bringen. Dabei kann die Umformung und die Entstehung des Federeffektes unter Einbringung von Energie in Form von Wärme, die über Ultraschall, Induktion oder temperierte Anlagen eingebracht wird, erfolgen. Die Verarbeitung ist auf konventionellen Anlagen mit Zusatzgeräten möglich.It has proven to be particularly advantageous for manufacturing of deep-drawn parts according to the invention the spring steel in the warm state deep-draw the sheet and only when it is fully formed through a heat treatment to its spring steel hardness bring. The reshaping and the emergence of the spring effect with the introduction of energy in the form of heat, the introduced via ultrasound, induction or tempered systems will be done. Processing is on conventional lines possible with additional devices.

Claims (2)

1. Tiefziehteile aus Stahlblech für Kraftfahrzeugkarosserien, insbesondere für Karosserieaußenhautteile, gekennzeichnet durch die Verwendung eines härtbaren Federstahles.1. Deep-drawn parts made of sheet steel for motor vehicle bodies, in particular for body shell parts, characterized by the use of a hardenable spring steel. 2. Verfahren zur Herstellung von Tiefziehteilen nach Anspruch 1, dadurch gekennzeichnet, daß der Federstahl im Warmzustand des Bleches tiefgezogen und im fertig geformten Zustand durch eine Wärmebehandlung auf Federstahlhärte gebracht wird.2. A method for producing deep-drawn parts according to claim 1, characterized in that the spring steel deep-drawn in the hot state of the sheet and in Completely shaped condition by heat treatment to spring steel hardness brought.
DE1995129881 1995-08-14 1995-08-14 Deep drawn sheet steel for vehicle external body Expired - Fee Related DE19529881C1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE1995129881 DE19529881C1 (en) 1995-08-14 1995-08-14 Deep drawn sheet steel for vehicle external body
GB9616705A GB2304313B (en) 1995-08-14 1996-08-09 Deep-drawn parts made of sheet steel
FR9610117A FR2737857B1 (en) 1995-08-14 1996-08-12 END PIECES FORMED FROM A STEEL SHEET

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1995129881 DE19529881C1 (en) 1995-08-14 1995-08-14 Deep drawn sheet steel for vehicle external body

Publications (1)

Publication Number Publication Date
DE19529881C1 true DE19529881C1 (en) 1996-09-12

Family

ID=7769461

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1995129881 Expired - Fee Related DE19529881C1 (en) 1995-08-14 1995-08-14 Deep drawn sheet steel for vehicle external body

Country Status (3)

Country Link
DE (1) DE19529881C1 (en)
FR (1) FR2737857B1 (en)
GB (1) GB2304313B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1195208A3 (en) * 2000-10-07 2004-12-15 DaimlerChrysler AG Method to produce locally reinforced sheet metal
DE10346661A1 (en) * 2003-10-08 2005-05-19 Ise Innomotive Systems Europe Gmbh Hydraulic press to form sheet steel plates has upper and lower tools applied to a workpiece surrounded by a cushion of inert gas
DE10060783B4 (en) * 2000-12-07 2021-05-06 Bayerische Motoren Werke Aktiengesellschaft Sheet metal forming tool

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2449240A1 (en) * 1974-10-16 1976-04-29 Daimler Benz Ag BUMPER FOR MOTOR VEHICLES

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2948998A1 (en) * 1979-12-05 1981-06-11 The Bendix Corp., 48037 Southfield, Mich. Twin beam vehicle suspension system - is constructed from single flat plate which is deformed to form pocket at one end and folded to form rectangular cross=section
FR2671022B1 (en) * 1990-12-26 1995-01-06 Valeo METHOD FOR MANUFACTURING A DIAPHRAGM, ESPECIALLY FOR CLUTCHES OF MOTOR VEHICLES.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2449240A1 (en) * 1974-10-16 1976-04-29 Daimler Benz Ag BUMPER FOR MOTOR VEHICLES

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DE-Z.: Krafthand, H. 4/86, S. 151,152,154, 156 u. 159 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1195208A3 (en) * 2000-10-07 2004-12-15 DaimlerChrysler AG Method to produce locally reinforced sheet metal
DE10049660B4 (en) * 2000-10-07 2005-02-24 Daimlerchrysler Ag Method for producing locally reinforced sheet-metal formed parts
DE10060783B4 (en) * 2000-12-07 2021-05-06 Bayerische Motoren Werke Aktiengesellschaft Sheet metal forming tool
DE10346661A1 (en) * 2003-10-08 2005-05-19 Ise Innomotive Systems Europe Gmbh Hydraulic press to form sheet steel plates has upper and lower tools applied to a workpiece surrounded by a cushion of inert gas
DE10346661B4 (en) * 2003-10-08 2006-10-12 Ise Innomotive Systems Europe Gmbh Method for hot forming sheet metal blanks and apparatus for carrying out the method

Also Published As

Publication number Publication date
GB2304313B (en) 1997-09-03
GB9616705D0 (en) 1996-09-25
GB2304313A (en) 1997-03-19
FR2737857A1 (en) 1997-02-21
FR2737857B1 (en) 1999-02-05

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Legal Events

Date Code Title Description
8100 Publication of the examined application without publication of unexamined application
D1 Grant (no unexamined application published) patent law 81
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: DAIMLER-BENZ AKTIENGESELLSCHAFT, 70567 STUTTGART,

8327 Change in the person/name/address of the patent owner

Owner name: DAIMLERCHRYSLER AG, 70567 STUTTGART, DE

8339 Ceased/non-payment of the annual fee