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Abstract The application of computer automated manufacturing systems is rapidly increasing to follow the needs of industry. The speed of information flow in highly automated systems is extremely important as they are critically dependent on the amount of fresh information supplied to them. In the present work, a complete design. implementation, and testing of a computerized Machining Information Center [MIC) is carried out to meet the needs for automatic machinability testing that would overcome the difficulties and expenses of conventional machinability testing methods. MIC consists mainly of a master computer that controls a slave computer, which, in turn, controls an Automated Machinability Testing Unit [AMTU). The system is protected against unintended events by including a closed loop emergencydetection system. The MIC remarkably decreases the testing time, cost and effort, material and tooling cost, as well as the experimental errors resulting from the unpredicted variation of machining conditions and from human interference. The MIC is recommended for the solution of machining problems, comparative evaluation of different workpiece and tool materials, machine tools, cutting fluids, ... etc. Moreover, it can be used as an experimental test rig for advanced machinability testing research |