单螺杆水力机械, 线型, 运动分析, 内摆线

In order to probe theoretically the radius variation ratio principle of the hypocycloid single-screw hydraulic machinery, this paper analyzed the relationship between the figuration movement and the joggle movement of shaft-housing pairs, described how the radius variation ratio to influence the line-stye of shaft-housing pairs. The results show that: when the radius variation ratio is a comparatively bigger value, the isometric profiles is not very good,so the turning zone is frayed rapidly.On the other hand, when the radius variation ratio is very small, such as 0.2, the floating contact area centralizes to the midpoint, the midpoint zone will be frayed rapidly. So the conclusion is that the finer radius variation ratio should be close to 1 under the circumstances that the isometric profiles has no drape on it.

single-screw hydraulic machinery;line style, motion analysis, hypocycloid