C20 ファイバ連結放射温度計によるドリル加工時の穴加工面温度の測定(OS5 加工計測・評価(2))

概要

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In drilling, excessive temperature rise is known to cause various types of thermal damage to the drilling tool and workpiece. Here, we study a temperature variation of the bottom of the hole during drilling using a newly developed infrared radiation pyrometer equipped with two optical fibers. One of the optical fibers is inserted in the oil hole of carbide drill and runs through the inside of the machine tool spindle. The fiber connects to the other optical fiber, which is connected to the two-color pyrometer, at the end of the spindle. Drilling is conducted by using stainless steel plates of different thicknesses. The temperature increases with increasing drilling depth. The increasing rate of the temperature rises near the exit of the hole by the heat storage effect.
2010-11-19