A methodology for economic justification of flexible manufacturing systems

This paper develops a model for the economic justification of flexible manufacturing systems. The proposed model considers the intangible and tangible benefits resulting from the implementation of advanced computer controlled manufacturing systems. The model's structure consists of a top down approach which identifies and measures the desirability of the firm's global (strategic) as well as local (tactical) objectives.     

OPTIMIZATION OF CONVECTIVE LONGITUDINAL FINS OF TRAPEZOIDAL PROFILE

This paper deals with optimum design of convective longitudinal fins of a trapezoidal profile. The optimum dimensions, and the associated heat dissipation, and efficiency are obtained in terms of dimensionless parameters, h√A_p/k and h_e/h. They are presented in graphical forms in order to aid thermal designers     

Development of decision support knowledge based system for tool wear diagnosis

This paper deals with the problems faced by small and medium sized metal cutting industries, with the perspective of tool monitoring. In a small or medium size metal cutting industry employing major metal cutting process, one of the primary problem is that of tool monitoring and wear diagnosis. The problem is of immediate concern especially in those industries where the processes or operations employed are flexible and production depends entirely on orders from customers. Due to a flexible manufacturing setup, almost all major metal cutting processers need to be carried out. However, it becomes increasingly difficult for such small or medium size metal cutting industries to employ skilled manpower for each operation as well as expert technicians to supervise the operation, and carry out fault diagnosis and tool monitoring. Also, the problem associated with tool monitoring is that human operator carrying out the monitoring has to rely either on observation such as ceasing of tool, rise in temperature, generation of fumes, noisy operation, vibrations, considerable change in shape etc, or by monitoring the quality of the finished product. Also, there can be instances where the operator does notice a symptom but does not have the expertise to identify the cause of the trouble. Errors in tool monitoring can lead to considerable damage both to the machine as well as the workpiece. On the other hand, if the tool is replaced before it reaches its useful life expectancy, it leads to unnecessary additional cost. A Decision Support Knowledge Based System (DSKBS) has therefore been developed in this paper with the above considerations. The DSKBS provides the user with a friendly environment to diagnose a particular tool wear and obtain the necessary repair or replacement instructions. The goal is to increase productivity, decrease cost of operation and enhance total quality and reliability of the operation.     

Normality verification of the vision camera for automated visual inspection

The verification method which checks the required normality between the vision camera and the inspection table has been explored and implemented. The normality is verified via using the image of a standard reference square collected by the to-be-verified vision camera. The image of the standard reference square remains a square if and only if the vision camera is normal to the inspection table. That property constitutes the operation principle of the verification method. On-site applications are demonstrated.     

办公与管理自动化发展动态及规划实例

本文说明办公与管理自动化技术概貌,它的层次划分,实现方法和发展动态.最后介绍成都某企业办公与管理自动化系统发展规划.