前言圆弧齿轮一般是按照额定载荷设计的,但实际上由于制造误差、轮齿和轴等零件的弹性变形、速度变化和振动等原因,使齿轮齿根产生很大附加动应力,这种动态弯曲应力峰值如果超过了轮齿的疲劳极限,就会使齿根产生疲劳裂痕。随着疲劳裂纹的不断扩展,终将会造成轮齿折断,这是圆弧齿轮损坏的主要形式之一。此外,这种动应力还会产生有害的振动和噪音,影响了传动的质量和运行人员的劳动条件。对于高速传动,这是特别应注意的问题之一。为了分析和研究圆弧齿轮断齿的原因,从而找出对策,改进设计和使用方法,提高它的传动质量和承 Preface Circular arc gear is generally designed according to the rated load, but in fact due to manufacturing errors, gear teeth and other parts of the elastic deformation, speed changes and vibration and other reasons, the gear tooth root has a lot of additional dynamic stress, this dynamic Bending stress peaks that exceed the fatigue limit of the teeth will cause fatigue cracks in the root. With the continuous expansion of fatigue cracks, will eventually result in broken gear, which is one of the major forms of arc gear damage. In addition, this kind of dynamic stress can also produce harmful vibration and noise, affecting the quality of the transmission and the working conditions of the operators. For high-speed transmission, this is one of the issues that deserve special attention. In order to analyze and study the reason of arc gear broken teeth, so as to find out the countermeasure, improve the design and use method, improve its transmission quality and bearing