On the high-order topology modification and meshing performance of face gear drives

Abstract

Focusing on the need for stable and reliable face gear transmissions, this study develops a high-order topology modification strategy to precisely control meshing behavior. Guided by contact path optimization, four modification functions including fourth-order, fourth-order segmented, second-order, and double-crowned are established along the contact path and instantaneous contact line. Comprehensive tooth contact analysis (TCA) and loaded TCA simulations reveal that the method effectively controls the contact path and shapes the transmission error curve. The fourth-order segmented modification proves particularly robust, significantly improving contact distribution and eliminating edge contact. Consequently, this approach effectively increases transmission stability and contact pattern percentage while reducing deviation. This research provides a practical framework for designing high-performance face gear pairs, especially for critical applications such as helicopter transmissions.

Graphical abstract

Keywords

face gear drives / topological modification / gear contact mechanics / loaded tooth contact analysis / meshing performance

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Higher Education Press