Assembly Production Line Capacity Improving Design Of M Automotive Co. Ltd.

The Automotive industrial develops with a high speed in recent years after China join WTO. According to the report "global automotive industrial finance review" from Price Waterhouse Coopers in Oct. 2006, In the coming 4 years, global vehicle market will keep increase in developed countries and a strong break through in China, Brazil, Russia and India, these 4 countries will account for over 40% increasing quota in global market. China without any doubt will be the most important one among the above 4 countries.Along with more deeper reformation and people's income increase, resident's consuming concept also make great changes, that cause vehicle sales market with high increasing trend, according to forecast, automotive industrial in our country is still have a high potential to increase in the coming years.Good economy developing environment bring market opportunities and more pressure at the same time to M company, one of the pressures is that with high increase of sales, the plant production capacity will face challenge, this is the main topic for this paper.In this paper, first is investigation of current plant production capacity and analysis based on current status to find out bottle neck department, we found Assembly shop is the bottleneck department; Then with time measuring method to measure actual working time for each working stations at Trim line, Overhead line and final line, compare to plant new target volume cycle time and defined 4 bottleneck stations; After defined bottle neck positions, use multiple activity operation chart and 5W1H asking method to analyze bottle neck positions and find out potential problems; Finally by using the principle of "ECRS" and motion economy to work out improving solution and realization result. After fulfillment of improvement, production line cycle time reduced from 9 min to 8.2 min, reached the target of efficiency improving and annual production capacity of 50000 units.The research result of this paper will motivate the company to extend the using of work study in the whole plant and the method can also give the reference for other company.