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齿轮传动的噪声通常包括齿轮、传动轴、轴承和齿轮箱体等的声辐射。本文仅就一对渐开线齿轮啮合传动时所产生的直接辐射噪声进行分析与探讨。一、渐开线齿轮啮合噪声的产生一对渐开线齿型的齿轮在运转过程中产生的振动与噪声主要是由于轮齿在啮合过程中产生“节线冲力”和“啮合冲力”所激起的。1.节线冲力设有一对理想齿轮(即齿面啮合绝对精确和绝对刚性的)啮合传动时,一对轮齿上的渐开线型面自 A点开始接触经节点 P 至 B 点相互分离,即 AB 线段为其啮合长度,如图1所示。A 点在主动轮齿面上接近其基圆,而在从动轮齿面上处于顶圆,因之 A 点的相对滑动速度最大。随着齿轮转动,接触点沿啮合线向
Gear transmission noise usually includes gears, shafts, bearings and gear boxes and other sound radiation. In this paper, only a pair of involute gear meshing transmission generated by the direct radiation noise analysis and discussion. First, the involute gear meshing noise generation A pair of involute gear-type gear in the operation of the process of vibration and noise are mainly due to gear tooth meshing process to produce “nodal momentum” and “meshing momentum” stimulated Up 1. Section line impulse With a pair of ideal gear (that is, the tooth surface meshing absolute accuracy and absolute rigidity) meshing transmission, a pair of gear involute profile contact from point A through the node P to point B separated from each other , That is, AB segment length for its engagement, shown in Figure 1. Point A is close to its base circle on the driving gear tooth surface and is on the top circle on the driven gear tooth surface, and therefore, the relative sliding speed at point A is maximum. As the gear rotates, the contact point follows the mating line