The objective of this study is to develop a system to determine optimal machining conditions for minimizing energy consumed in machine tools. To realize this objective, we developed a module calculating the cutting energy and energy consumed in each unit comprising a machine tool, and applied it in experiments. The cutting energy was calculated using cutting force, torque of cutting force, and cutting power for square end milling and ball end milling. The energy consumed by each unit of the machine tool was also estimated through experiments based on real machine tools.
An authentication technology such as Public Key Infrastructure (PKI) is used for a server authentication. However, it does not certificate a status of a server side security countermeasures, e.g., a configuration and operating condition of a Firewall (FW), a Virus Detection System (VDS) and an Intrusion Detection System (IDS). When a client machine communicates the server that is vulnerable to the attack, the server may affect the critical damage to the client machine. In this paper, we propose a Security Key Infrastructure (SKI) scheme that verifies the server side security countermeasures by linkage between an external and an internal audit. We consider requirements for designs of the SKI scheme, and implement communication modules between the server and the client machine. It is shown that the proposed SKI can achieve a quick response of the server and provide the certification of the security countermeasures to the client machine.
The o 切 ective of this stUdy is to develop a system to detennine optimal machining conditions fbr minimizing energy consumed in a machine tool . To realize this objective , a module to estimate cutting energy and ' energy consumed in each unit of a machine tool is developed. Cutting energy in square end milling and ball end mil 且 ing is estimated by the cutting force which can be derived frorn the cutting area and the specific cutting force . And , energy consumed in each unit of a machine tool is calculated by the electric energy model defined with basic expermlcnts . KeyMonts : CAM , End mill cutting , Skilled Workcr , CuUing force , CuUing power , Cutting energy , Machine Tool ,
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