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Method of forming a panel from a metal alloy sheet

a metal alloy and panel technology, applied in the field of metal alloy sheet forming, can solve the problems of inability single sheet forming operations, and progressive die stamping of panels, and achieve the effect of not being able to produce more complex shapes, and having deep draw geometries that exceed the draw limitations of forming operations

Inactive Publication Date: 2008-05-08
FORD GLOBAL TECH LLC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Single sheet forming operations, such as for example, progressive die stamping of a panel, may not be feasible in producing more complex shapes.
Body panels having complex shapes may have deep draw geometries that exceed the draw limitations of the forming operation.
Both of these solutions either add cost and complexity to the manufacturing process, or limit design flexibility.

Method used

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  • Method of forming a panel from a metal alloy sheet
  • Method of forming a panel from a metal alloy sheet
  • Method of forming a panel from a metal alloy sheet

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[0032]Detailed embodiments of the present invention are disclosed herein. It is understood, however, that the disclosed embodiments are merely exemplary of the invention and may be embodied in various and alternative forms. The figures are not necessarily to scale, some figures may be exaggerated or minimized to show the details of the particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for the claims or as a representative basis for teaching one skilled in the art to practice the present invention.

[0033]Referring to FIG. 1, a partial perspective view is provided of a vehicle 10. The vehicle 10 includes a fender body panel 12, an exterior door trim panel 14, an exterior lighting lens 16, and a bumper fascia 18. The exterior lens 16 and the bumper fascia 18 are produced by injection molding a plastic material. Other panels, such as the fender 12, are often manufactur...

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Abstract

A method is provided for forming a panel from a metal alloy sheet having known stress-strain forming properties including a forming strain limit that is exceeded when a single forming operation is used to form the panel. The method comprises determining a stress relieving treatment and an incremental forming treatment for forming the panel. The total incremental forming strain comprises a first strain increment. The stress relieving treatment results in the total incremental forming strain remaining within the forming strain limit. A first preform shape is determined in which the geometry of the shape does not exceed the first strain increment. The sheet is formed into the first preform shape. The first preform shape is then stress relieved. The first preform shape is then formed into a panel shape having a geometry that is within the total incremental forming strain.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates generally to incrementally forming a panel from a strain hardenable metal alloy sheet that has a forming strain limit that may be exceeded if the panel is formed in a single forming operation.[0003]2. Background Art[0004]Styling is an important consideration in designing a vehicle that may be limited by the manufacturing feasibility of producing body panel parts with complex shapes. Often the panels are made of metal alloy sheets. Two examples of commonly used production forming methods for these panels are metal sheet stamping and more recently, hydroforming. Single sheet forming operations, such as for example, progressive die stamping of a panel, may not be feasible in producing more complex shapes. Body panels having complex shapes may have deep draw geometries that exceed the draw limitations of the forming operation. The ability to form complex shapes in body panels is compounded by t...

Claims

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Application Information

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IPC IPC(8): B21D31/00
CPCC21D1/30C21D1/40C22F1/04C21D9/48C21D1/42Y02P10/25
Inventor GOLOVASHCHENKO, SERGEYKRAUSE, ALBERTGILLARD, ALAN
Owner FORD GLOBAL TECH LLC
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