Abstract
The heat generation due to friction between tooth flanks and hysteresis of plastic material greatly affects the load capacity of plastic gear pair, especially in operation without lubricants. And, the bending strength is not proportional for module size and facewidth, because the plastic gear generation of heat. In addition, when the gear speed quickens, the possibility of generation of heat increases and the tooth temperature rise. However, as for the faster speed, the generation heat potential decreases and the tooth temperature falls. Therefore, The bending strength formula of plastic gear must consider for the generation heat by the module size, facewidth and gear speed. Then, the temperature should be the critical section of the tooth profile. It was analyzed by special heat software of the gear that developed by us. In the present paper, an effect with module and gear speed to the radiation was analyzed for the gear by various modules.
