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This paper will introduce a new sensor coupling device for milling machines, drilling machines and for the machine center. Within the industry there has always been the need for a practical application of the sensor coupling device to detect the cutting process related signals from the “tool side”. A mounting device which enables the sensor to be fixed close to the rotating multipoint cutting tool has been developed to meet this need. Thus a more practical method for detecting the tool fracture of twist drills and/or tool chipping of an end mill cutter becomes possible. The machining process associated signals are high frequency Acoustic Emission (AE) signals detected from the spindle top of the machine being used. In this study two kinds of AE-signals will be compared. The first are those detected from the spindle housing. The second are signals detected from the spindle top using the newly developed sensor coupling device. Furthermore, the structure of an AE-monitoring system for supervising multipoint cutting tools will be described. In addition, results of experiments which monitor the tool health coefficient, derived from the power spectrum of the machining signals, will be discussed.

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Advanced Oxidation Processes (AOPs) for the treatment of waste waters containing non-biodegradable organic compounds rely mainly on the production of a potent oxidizing agent, the hydroxyl radical. This paper reports the test results of AOPs with photocatalyst for waste water including non-biodegradable compounds. The mechanism of AOP applied in this work ; 1) UV irradiation against photocatalyst 2) Reduction of Fe^<3+>ion by electron generated from photocatalyst 3) Enhancement of Fenton reaction. Compared to the degradation efficiency for 2,4-dichlorophenol(2,4-DCP) of several AOPs, UV/FeCl_3/H_2O_2 process (Photo-Fenton reaction) and UV/TiO_2/FeCl_3/H_2O_2 process have higher degradation efficiency. Both systems are effective processes for waste water from dyeing industry. These treatments do not require a large amount of Fe salt usually necessary for the Fenton Reaction(Fe^<2+>/H_2O_2). As a result amount of sludge (as Fe(OH)_3) is decreased.

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