Research on Operational Efficiency Improvement of Auto Parts Manufacturing Enterprises from the Perspective of Lean Management

Abstract

Aiming at the common problems of chaotic production processes, excessive work-in-process inventory, and low equipment utilization in small and medium-sized auto parts manufacturing enterprises in China, this paper adopts the core lean management theory of industrial engineering, takes an auto chassis parts manufacturing enterprise in Sichuan Province as the research object, and applies lean tools including value stream mapping, 5S management, standardized operation, and quick die change to conduct systematic process optimization. The results show that after 6 months of lean management implementation, the production cycle of the enterprise's core product is shortened by 32.7%, work-in-process inventory is reduced by 41.2%, overall equipment effectiveness is increased by 28.5%, and the first pass yield of products reaches 98.6%. This paper verifies the significant positive effect of lean management on the operational efficiency of manufacturing enterprises, and provides a replicable lean implementation path for similar small and medium-sized manufacturing enterprises.