| Six Sigma is invented at Motorola in the mid-1980s to reduce the number of defects in the manufacturing process. With the help of Six Sigma method Motorola have saved 90 billions USD up to the present. Now Six Sigma management gradually has been recognized by many enterprises, regarded as an effective way to obtain benefit depending on quality, and gradually applied into the strategy improvement, the business transformation and problem solving.With the fast development of the global economy, competition of business turns critically, marketing demand has already changed diversification and individuation, and supply has also changed from seller's market to buyer's market, small batch quantity has become main market requirement. Under these situations, Lean Production with new & advanced concept and practical value, is comprehensively confirmed and applied by many enterprises of all over the world.To mobile manufacture of Tianjin site, because of speeding high demand of mobile order, production space is even bottleneck issue, and has to set several temporary operation locations, so increases middle control process, assemble and equipment layout is unreasonable; in addition production lines frequently cut over, increase waiting time of equipments, reduce equipments utilization ratio, reduce shift output and total output.The author elaborates from two aspects of practice and theory in how to integrate Lean manufacture system with Six Sigma system in Motorola. Firstly the paper elaborate basic principle foundation and the relationship of the Lean production and Six Sigma, Then deal with the problem in Motorola with Lean-Six Sigma,(1) After optimized and re-layout the production flow, reduced the total travel distance from 677.8m to 340m, improved 49.8%. Reduce total cycle time from 70.5 hours to 44.4 hours, improve 37%. (2) After improved the process of chip shooter, the efficiency of Frond-End increased 7%, Save much OEM cost. |
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