Overview
ABSTRACT
A major and final process in the vehicle manufacturing process, crimping consists of cold-assembling metallic sheets for installing doors, trunks, hatches and hoods. This article proposes an initial approach to the flat-crimping process for automobile bodywork: manufacturing openings, types of crimping, other technologies, and so forth. The aspect and geometry problems inherent to this process are then itemized. To assist in prevention, some definitions of these problems as well as an experiment on some simple geometric parts are put forward.
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Christian LANGE: Civil engineer from the École nationale supérieure des mines de Saint-Étienne (France) - Doctorate in materials science and engineering from the École nationale supérieure des mines de Paris (France) - Design engineer for window mechanisms and frames, PSA Peugeot Citroën, Sochaux site
INTRODUCTION
Crimping is a cold assembly technique for metal sheets used in the automotive industry to shape opening parts such as doors, flaps or hoods. It is a major step in the vehicle manufacturing process, as it generally completes the assembly of exterior opening parts, directly exposed to the customer's view. This article provides an introduction to flat crimping of parts with simple geometries, in order to understand the physics of the process. The first paragraph illustrates the flat crimping process as used in the automotive industry. Other crimping techniques are also presented. The next paragraph is devoted to the various appearance and geometry problems generated by this process. It is important to be able to predict these, in particular using numerical simulation, which is the subject of a second article, "Flat crimping for automotive bodywork: numerical simulation"
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Material processing - Assembly
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Flat crimping for automotive bodywork: process
Process
Bibliography
References
Software
(non-exhaustive list)
ARAMIS http://www.trilion.com/pd_aramis.html
Organization
Metal forming center (Cemef) https://www.cemef.minesparis.psl.eu/
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