| As the automotive industry has been in a mature period and the scale of the automotive industry has rapidly expanded.The auto parts suppliers are gradually refining and formed a pyramidal multi-layer supporting supply system with the vehicle factory as the core and the parts supplier as the support.AS automotive sound and communication Co.,Ltd.as a wholly owned subsidiary of Italy in China devotes car loudspeaker design,development,manufacture and service for the main business,it has a certain competitive advantage,but under the pressure of human and raw material costs increased yearly,and the situation of supplier’s price drop constrainedly in automotive industry,part suppliers are restricted,additionally,the qualified rate of individual products are not high and cause some direct economic losses,AS company expects to optimize the production,improve quality and the efficiency,create more profits and get the customer satisfaction in order to achieve the long-term development.Based on the Lean six sigma method and take the M model speaker of AS company as an example,the target of the study is improving the acoustic quality of M model speaker,promote the FPY and Final qualified rate,achieve the synchronous improvement about quality,efficiency and customer satisfaction.Introduce DMAIC method,define the target,collect data,find the root cause of the high unqualified rate,make the corrective actions and implement the standard control.The study gets the positive result,it helps the enterprise save the material cost,improve the production efficiency and provide the quality assurance to customer too.The correctness of this improving activity is verified by study and simulation assessment,improvement method is effective and can be used for reference for other similar projects.The study helps company create the real value,the method will be also extended to other similar projects to achieve the continuous improvement,to create greater profit space for enterprise and provide better products and services for customer. |
