论文部分内容阅读
悬臂轴是特别容易挠曲的,其过大的挠度不仅影响传动的精度,还影响齿轮的承载能力,在高速下将会引起激烈的振动。通常,提高悬臂轴刚性的一种结构设计方法是增加第三轴承,使轴系成为静不定。然而,这在制造与安装时,都难于保证严格地对中。精确地刚度计算指出:只要适当地增大轴径,并选择最优化的轴承间跨距,即使不用第三轴承(见图1),也仍然可使系统的刚性满足要求,但其计算方法比较复杂,其跨度又多凭经验估算误差较大。本文将提供一种用迭代法进行最优化跨距设计计算的简易方法,并附有应用实例。
Cantilever shaft is particularly easy to bend, and its excessive deflection not only affects the accuracy of transmission, but also affect the carrying capacity of gears, will cause intense vibration at high speed. In general, a structural design method to increase the rigidity of a cantilever shaft is to add a third bearing to make the shaft system static. However, it is difficult to guarantee a strict centering during manufacture and installation. The exact stiffness calculation states that as long as the shaft diameter is properly increased and the optimal span of the bearing is chosen, the rigidity of the system can be satisfactorily satisfied even without the third bearing (see Figure 1), but its calculation is compared Complicated, its span and more by empirical estimation error. This article will provide an iterative method to optimize the span design and calculation of a simple method, with application examples.