Research And Application Of Small-batch Job Shop Scheduling And Controlling Integrate System

The products of single pieces of small serial production occupy about 70% of the products in the whole world, and the condition in China is the same. So setting the system that can study out many-goals and optimal scheduling of single pieces of small serial production is important for enterprises to realize the automation of management and improve economic profits. In these decades, many scholars and experts home and abroad have much research on this subject of scheduling and controlling on single pieces of small serial production, such as the Management College of Tsinghua University, CIMS national key laboratory, Huazhong University of Science and Technology and The Hong Kong Polytechnic University.Integrating with our nation's production management pattern and mechanism, establishing the integrated system of production planning and scheduling fits to the condition of single pieces and small serial production, and it has very important economic value in elevating our nation's enterprises efficiency, and it has contributed to enforce the stratagem of CIMS.As to the type of single pieces and small serial production, task planning and scheduling is a very important and difficult subject. The system includes three parts: technology subsystem, scheduling subsystem and supervising subsystem. System can set up and modify the schedule quickly, realize the emulating of shop material flow and the supervising, reduce the use of material and labor, improve the using rate of the machine and reduce the cost of the manufacture of products. Our system, Zenith SPPS, can solve the problem of small-batch workshop.According to the situation of the company of single piece and small scale type, such as KELON, we bring forward the math model of backward scheduling and forward scheduling, and apply the system to the production of die, and take the production plan of manufacturing center as the main implementing object. The system of scheduling and supervisal is easy to operate. It can solve the difficult problem in the die company, and it can print some useful forms that can guide the producing workers. As to the modifying of the plan, real supervisal, remote control and working out the plan can be realized through the computer, which raises the production efficiency and alleviates the difficulty of the management.