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Method of manufacturing metal embossed plate

a technology of metal embossed plate and manufacturing method, which is applied in the direction of vehicle components, transportation and packaging, etc., can solve the problems of increasing the number of devices installed, and increasing the weight of road vehicles, so as to reduce the strain on the raw metal plate, improve the rigidity and increase the total thickness of the metal embossed plate

Inactive Publication Date: 2018-10-04
KOKUSAN BUHIN INDS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent text describes a metal sheet used in exhaust manifolds for vehicles. The metal sheet has a low stretch property in the longitudinal direction, which makes it difficult to form a three-dimensional shape that fits the shape of the exhaust manifold. This results in a decrease in yield ratio and high cost. The metal sheet is also formed of two overlapped plates joined by mechanically clinched portions, which may affect the formation of a three-dimensional shape close to the shape of the exhaust manifold. The patent text also describes a method to improve the elongation percentage of the metal sheet, which raises the critical draw ratio and increases the range of design that can be formed by deep-drawing.

Problems solved by technology

Fuel consumption rises as a weight of a road vehicle increases.
Meanwhile, road vehicles are becoming heavier for various reasons, such as requirements of crash safety standards for higher strength against offset crash and the increase in the number of devices installed for improving comfort of a road vehicle.
As exhaust manifolds are made more compact, a shape of the cover is required to be deeper, which makes it more difficult to form by deep-drawing.

Method used

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  • Method of manufacturing metal embossed plate
  • Method of manufacturing metal embossed plate
  • Method of manufacturing metal embossed plate

Examples

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Embodiment Construction

[0035]Embodiments of the present invention will now be described with reference to the drawings.

[0036]As illustrated in FIGS. 1 to 3, a metal embossed plate 10 manufactured by a manufacturing method of the present invention has, on the entire plate, corrugations including combination of a plurality of first corrugated portions 11 formed in a first direction X, a plurality of second corrugated portions 12 formed in a second direction Y approximately orthogonal to the first direction X with a half-height and a pitch longer than those of the first corrugated portions 11, and a plurality of third corrugated portions 13 approximately in the first direction X. Curved lines a and b in the drawings are explanatory auxiliary lines drawn to show high portions and low portions of the corrugated portion.

[0037]The method of manufacturing the metal embossed plate 10 includes a first corrugating step illustrated in FIGS. 4 and 5 in which a flat raw metal plate 15 is die-pressed to sequentially for...

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Abstract

First corrugated portions in a first direction are sequentially formed by die-pressing a raw metal plate. Second corrugated portions formed in a second direction intersecting the first direction are sequentially formed by die-pressing a primary formed plate having the first corrugated portions using elongate projections, so that each of the second corrugated portion has a half-height and a pitch larger than those of each of the first corrugated portion. Third corrugated portions formed approximately in the first direction are sequentially formed by die-pressing a secondary formed plate having the second corrugated portions using elongate projections, so that each of the third corrugated portions has a half-height and a pitch larger than those of the first corrugated portion.

Description

BACKGROUND OF THE INVENTION(1) Field of the Invention[0001]The present invention relates to a metal embossed plate that can suitably be used as a covering member for covering an exhaust part of a road vehicle, an exhaust part covering member of a road vehicle using the metal embossed plate, and a method of manufacturing the metal embossed plate.(2) Description of Related Art[0002]Fuel consumption rises as a weight of a road vehicle increases. Requirements for fuel consumption are becoming severer year by year along with the requirements for CO2 emission. Reduction in the weight of the road vehicle is definitely needed. Meanwhile, road vehicles are becoming heavier for various reasons, such as requirements of crash safety standards for higher strength against offset crash and the increase in the number of devices installed for improving comfort of a road vehicle. To reduce a weight of a part of a road vehicle, use of aluminum alloy materials (aluminum materials), which have high adva...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B21D13/02
CPCB21D13/02B21D53/88
Inventor ABE, YOSHITAKA
Owner KOKUSAN BUHIN INDS
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