Development of infrared radiation pyrometer with optical fibers—Two-color pyrometer with non-contact fiber coupler

Turning of difficult-to-machine materials with actively driven rotary tool

“…An acceleration pickup is used for sensing the oscillation which is produced by the cutting edge when it passes through the sighting hole on the workpiece surface. We confirmed the independence of the two-color pyrometer from deviation and eccentricity between the fibers in the coupler, and emissivity of the object both experimentally and theoretically [12].…”

“…In this experiment, tool temperature at the flank face is measured using a fiber-coupled two-color pyrometer [10][11][12]. The fundamental construction of this pyrometry is shown in Fig.…”

“…In this method, the cutting point could not be seen because of the chip covering the tool-chip interface and the temperature obtained varies with the emissivity of the rake face. Ueda et al measured the temperature of the cutting tool in end milling, turning and drilling using a two-color pyrometer with an optical fiber [10][11][12], and this noncontact thermometry can easily be applied to the measurement of cutting temperature of the ADRT in turning.…”

Cutting temperature measurement by a micro-sensor array integrated on the rake face of a cutting tool

“…Ueda et al developed an optical fiber sensor that detects the strength of the infrared radiation emitted by the workpiece [5]. Their group has reported many results with the fiber sensor [6][7][8]. Denkena et al also measured the cutting temperature around the cutting edge with a two-color ratio pyrometer [9].…”

Modelling and Experimental Investigation of Cutting Temperature when Rough Turning Hardened Tool Steel with PCBN Tools

“…A large number of techniques for temperature measurement in machining, from dynamic thermocouple [6] to optical fiber [7,8] and IR-CCD [3,9,10] imaging, that differ in complexity, accuracy, spatial resolution, cost, etc. are utilized [1].…”