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用几何法求出了外啮合渐开线齿轮泵的流量公式 ,并求出了齿轮泵困油容积变化量与齿轮啮合重合度的关系式。利用直齿齿轮泵的困油容积变化公式 ,求出了斜齿齿轮泵的困油容积变化公式 ,得到了斜齿齿轮泵不发生困油的螺旋角。
The geometrical method was used to calculate the flow formula of involute gear pump, and the relationship between the change of trapped oil volume and gear meshing coincidence was obtained. Utilizing the formula of change of trapped oil volume of spur gear pump, the formula of change of trapped oil volume of helical gear pump was obtained, and the helix angle of helical gear pump without trapped oil was obtained.