Weight-reducing surface structuring on components produced by a casting method

Abstract

A cast component, in particular for a vehicle, has a surface structuring arranged on at least one wall portion of the cast component. The surface structuring forms a surface of the wall portion, and stiffens the wall portion. The surface structuring is formed by a plurality of evenly shaped depressions in the surface of the wall portion, which depressions are mutually spaced apart, leaving interconnected webs, and produce tapered sections on the wall portion.

Claims

1. A cast component, comprising: at least one wall portion of the cast component; a stiffening surface structuring configured as a surface of the wall portion, the stiffening surface structuring stiffening the wall portion, wherein the stiffening surface structuring comprises a plurality of evenly shaped depressions in the surface of the wall portion, the plurality of evenly shaped depressions are mutually spaced apart to leave interconnected webs and produce tapered sections of the wall portion, and occupy less than an entire surface of the wall portion of the cast component, and the plurality of depressions, in a top view on the surface of the wall portion, are configured to be hexagonal and form a honeycomb structure.

2. The cast component according to claim 1, wherein the cast component is made of aluminum.

3. The cast component according to claim 1, wherein the cast component is a vehicle cast component.

4. The cast component according to claim 1, wherein the wall portion is configured to form a non-planar surface in a region including at least a portion of the plurality of depressions.

5. The cast component according to claim 4, wherein the wall portion forms a non-oscillation membrane.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a perspective representation of a conventional cast component integrated in a vehicle body.

(2) FIG. 2 is a perspective representation of an exemplary embodiment of a cast component according to the invention, integrated in a vehicle body.

(3) FIG. 3 is a sectional representation of the cast component according to the embodiment shown in FIG. 2.

(4) FIG. 4 is a schematic top view of a further exemplary embodiment of a cast component according to the invention.

DETAILED DESCRIPTION OF THE DRAWINGS

(5) FIG. 1 shows a perspective representation of a conventional cast component 2 installed in a vehicle body 1. The cast component 2 is developed as a spring support of the vehicle body 1. The cast component 2 has a wall portion 3 with an even wall strength and a planar surface. The planar wall portion 3 forms an oscillation membrane, which leads to the aforementioned acoustic disadvantages.

(6) FIG. 2 shows a perspective representation of an exemplary embodiment integrated in a vehicle body 1 for a cast component 4 according to the invention, which is developed as an aluminum pressure cast component. On a wall portion 5 of the cast component 4, which is provided with a conventional planar surface, a stiffening surface structuring 7 is provided, which forms the shown surface 6 of the wall portion 5 and stiffens the wall portion 5. The surface structuring 7 is formed in the surface 6 of the wall section 5 by a plurality of evenly shaped depressions 9 in the surface 6 of the wall portion 5, which depressions are mutually spaced apart, leaving interconnected webs 8, and produce tapered sections on the wall portion 5. In a top view of the surface 6 of the wall portion 5, the depressions 9 are developed hexagonally on both sides and form a honeycomb structure.

(7) FIG. 3 shows a sectional representation of the cast component 4 according to the embodiment shown in FIG. 2, along the sectional line A-A shown in FIG. 2. In the area of the webs 8, the wall portion 5 has an exemplary wall strength of 3 mm and in the area of the depressions 9 an exemplary material strength of 2 mm. In this way, depending on the number, size and depth of the depressions, the weight savings can be increased.

(8) FIG. 4 shows a schematic top view of a further exemplary embodiment of a cast component 10 according to the invention. In the shown top view of the surface 6 of the wall portion 5 of the cast component 10, the depressions 9 are developed on both sides and hexagonally and form a honeycomb structure. The depression width b is freely scalable and can be 20 mm, for example. The web width a is also freely scalable and can be 3 mm, for example. The angle w is 120 in the exemplary embodiment.

LIST OF REFERENCE SYMBOLS

(9) 1 Vehicle body

(10) 2 Cast component

(11) 3 Wall portion

(12) 4 Cast component

(13) 5 Wall portion

(14) 6 Surface

(15) 7 Stiffening surface structuring

(16) 8 Web

(17) 9 Depression

(18) 10 Cast component

(19) a Web width

(20) b Depression width

(21) w Angle

(22) The foregoing disclosure has been set forth merely to illustrate the invention and is not intended to be limiting. Since modifications of the disclosed embodiments incorporating the spirit and substance of the invention may occur to persons skilled in the art, the invention should be construed to include everything within the scope of the appended claims and equivalents thereof.