Abstract: In order to analyze the temperature changes of ice cuttings in drilling process， a mathematical model was constructed based on metal cutting theory. The factors which affected the cutting temperature were studied， including drilling pressure， rotation speed of drilling bit， cutting edge angle， cutting depth， friction coefficient， ice shearing strength， heat conduction coefficient of cutters and so on. The results show that the parameters mentioned all have a certain effects on cutting temperture， particularly the friction coefficient， and when it increases to 0.3， the temperture of the ice cuttings can raise 9.11℃. Moreover， the rotation speed of the drilling bit and the angle of the cutting edge also affect the temperature of ice cuttings. The temperature increases from 2.35℃ to 4.35℃ with the rotation speed increasing from 30r/min to 130r/min， while it decreases from 3.48℃ to 2.42℃ with an increasing of the cutter edge angle from 15° to 75°.

Key words: warm ice, polar research, drilling, cutting heat, cutting temperature