Research On Improvement Of Machining Line's Process Ability Based On Overall Equipment Efficiency

During the first ten-year of the 21st century,Chinese automobile industry has reached great prosperity, which leads China to the first place both in Automobile production and sales. Entering into the 2nd ten-year of the 21st century, the automobile industry will continue enjoying the biggest market in the world and the most powerful support from the Chinese government. However, the industry also has to face the great challenge that combines more aggressive competitors, worse environment and less cheap resources. All mentioned above forced the Chinese automobile industry to apply the more sustainable development strategy.This paper will do research on the machining line which is very common in automobile parts industry and find the best way to improve the process ability with the lowest cost, which means maximizing the function of existed resources. This paper will use the theory of"Constraints"to find the bottleneck that obstruct improvement of process ability, and constructs a series of"tool bars"to solve the bottleneck problem.This paper will construct the core index system to evaluate the machining line's process ability, and construct a kaizen model on how to improve machining line's process ability. Through research about OEE's development and practices in both abroad and domestic country, this paper raises a new evaluating concept named OPE (Overall Process Effectiveness, simplified as OPE), which aims to evaluate the equipment function from the perspective of process ability. Based on the OEE data, this paper tries to find the real bottleneck process through"Theory of Constraints", and the time losses forming the"Constraints", and then fix it. This paper describes every single step of the whole kaizen model and represents the process applying the model.The model has been applied on a cylinder producing line and it turned to be good. Through the application of the model, we find the OPE index has clearly reflected the overall process ability;What's more, most index of the evaluating system finally turned out to be better.