Temperature distribution in teeth and blanks of ultra high-speed gears (1st report, measurement of temperature distribution in teeth and blanks)

The purpose of this study are to ensure reliability of the power transmissi on gears, and to predict operating condition of high speed gears especially with regard to temperature distribution in teeth and blanks. The experimen ts were carried out using power circulating gear testing machine (1 100 kW) under ultra high pitch line velocity (similar to 150 m/s) and temperature distribution in teeth and blanks were measured. By the experiments, the fol lowing facts are known. By increasing line velocity, the temperature of tee th increase parabolically and the distribution of bending stress become non uniform along face width.