Abstract: With the increasingly fierce competition in the commercial vehicle market in recent years, product design optimization, process optimization, etc. have become important measures for cost reduction and efficiency improvement. Applying automation technology to optimize the traditional complex welding and assembly production process of automobiles, improving production efficiency and shortening the product delivery cycle has become a trend in the industry. This paper addresses the complex process of traditional serial number stamping in commercial vehicles, applies lean production value stream technology to identify non-value-added points throughout the entire operation process, and at the same time benchmarks against industry leading enterprises, introducing automatic numbering technology to increase the proportion of value-added operations in the physical flow, reducing six steps such as sign plate processing, transportation and distribution, and improving operation efficiency by 26%, providing feasible technical support and solutions for the optimization of the welding and assembly line process.

Key words: welding assembly; serial number; process optimization; work efficiency

摘要： 随着近年来商用车市场竞争的日益加剧，产品设计优化、工艺优化等成为降本增效的 重要举措。应用自动化技术优化传统复杂的汽车焊装生产工艺，提高生产效率，缩短产品交 付周期已成为行业发展的趋势。文章针对商用车传统打刻流水号过程工艺复杂问题，应用精 益生产价值流技术全作业过程识别非增值点，同时对标行业标杆企业，引入自动打号技术提 升实物流增值作业占比，精减标牌加工、转运配送等六个步骤，提升作业效率 26%，为焊装 线体工艺优化提供了可行的技术支撑与解决方案。

关键词: 焊装；流水号；工艺优化；作业效率