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前言 現代工业上应用最广泛最普遍的蝸杆蝸輪传动是普通的圆注杆传动,其中以阿基米得蜗杆、渐开綫蝸桿和延伸漸开綫蝸杆(亦称盘旋面或护轴綫蝸杆)传动。但这些蝸杆传动具有下列两种主要缺点: (1)齿面接触点处的相对速度与接触綫切綫的夹角此90°小得多,而且在大多数的接触点上,角度γ近于0°,只是在少部分的点上(位于蝸杆离开嚙合的区域)才达到γ=40°～50°。从摩擦流体动力学理論來說,在相对速度向量V力定值时,其垂直于
Preface The most widely used worm gear drive in modern industry is the ordinary round-bar drive, in which the worm, involute worm and involute worm extend involute (also known as the spiral surface or axis Worm) drive. However, these worm gears have the following two major drawbacks: (1) The included angle between the relative velocity at the contact point of the flank and the tangent to the contact line is much smaller than 90 °, and at most of the contact points, the angle γ At 0 °, γ = 40 ° to 50 ° is reached only at a few points (in the area where the worm leaves the engagement). From the theory of frictional fluid dynamics, when the relative velocity vector V force is set, it is perpendicular to