Three-dimensional modification for vibration reduction and uniform load distribution focused on unique transmission characteristics of herringbone gear pairs

Abstract

Herringbone gear pairs are widely utilized in high-power transmission devices. However, the current modification methods for these gear pairs are predominantly based on techniques designed for other types of gear pairs, which may not fully capture the specific transmission characteristics of herringbone gear pairs. Consequently, a novel three-dimensional modification approach focused on transmission characteristics of herringbone gear pairs is proposed to address vibration reduction and uniform load distribution. The relationship between gear modification and transmission characteristics is established, enabling the determination of optimal profile and axial modification parameters by integrating the targets of vibration reduction and uniform load distribution. Experimental validation is conducted to verify the models describing the transmission characteristics of herringbone gear pairs. Furthermore, an illustrative example is provided to demonstrate the optimization design methodology for three-dimensional modification. The results exhibit a significant reduction in vibrations in both the circumferential and axial directions, by approximately 11-fold and 1050-fold, respectively, while substantially improving the issue of partial load. In addition, the comparative results also indicate that it is difficult to achieve the goal of vibration reduction and uniform load distribution by using the same modification method for the tooth at the left and right ends of the herringbone gear.