关键词: 精益化；改制；车身；切割位置；拼接工艺

Abstract: Using the existing models to complete the extended range electric car body reform can not only save development costs, but also speed up the upgrading of new products. Based on the body of an extended range electric vehicle of the company, the paper introduces the construction of the body restructuring platform, and explains the size adjustment and restructuring methods of the body lean restructuring, including cutting position selection, marking, fixing and translation before cutting, wheelbase extension splicing process, body widening splicing process, body heightening tooling production, and body heightening splicing process. The characteristics of the method are described in detail. The accuracy error values of the vehicle body are all less than 2 mm, which verifies the effectiveness of the method. This method ensures the realization of the body structure of the new model, controls the cost of restructuring, shorts the development cycle, and provides a new idea for the subsequent restructuring scheme.

Key words: lean; reform; body; cutting position; splicing process