" In volute cylindrical gear , external gearing , large modulus "
渐开线圆柱齿轮外啮合大模数
" In volute cylindrical gear , external gearing , minor modulus "
渐开线圆柱齿轮外啮合小模数
This paper mainly researches the change principle of the volute section configuration , the volute section area and the diffuser . Based on the research , an improved program is put forward .