Claims
- 1. A process for producing a chassis for vehicles, the process comprising: extruding a single frame element from an aluminum alloy, the frame element having a continuous cross-section and including an upper beam, a lower beam, and a web portion disposed between the two beams and connecting the two beams; removing substantially all of the web portion along a predetermined length of the beam to define a vacant portion of the web; pulling the upper beam and lower beam of the web vacant portion in opposite directions so that the web vacant portion becomes an expanded opening; bending the frame element in accordance with the size and shape of the body of a vehicle which is to be placed on the chassis; and welding the ends of the frame element into an endless frame.
- 2. A process as defined in claim 1, wherein the upper beam and the lower beam are hollow throughout their lengths.
- 3. A process as defined in claim 1 or 2, wherein the frame element is made of A6000 aluminum alloy.
- 4. A process as defined in claim 1 or 2, wherein the web portion is provided with reinforcing ribs.
Priority Claims (1)
Number |
Date |
Country |
Kind |
62-201423 |
Aug 1988 |
JPX |
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Parent Case Info
This application is a continuation of application Ser. No. 230,175, filed August 9, 1988, now abandoned.
US Referenced Citations (8)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2370618 |
Jul 1978 |
FRX |
Non-Patent Literature Citations (1)
Entry |
Metals Handbook Ninth Edition, vol. 2, pp. 4, 5, 18, 19, Copyright 1979. |
Continuations (1)
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Number |
Date |
Country |
Parent |
230175 |
Aug 1988 |
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