Transfer case annular gear shaft, manufacturing method thereof, and device comprising transfer case annular gear shaft

The invention relates to a transfer case annular gear shaft, a manufacturing method thereof, and a device comprising the transfer case annular gear shaft. The annular gear shaft comprises an annular shaft wall, and the shaft wall defines a hollow inner cavity; the inner cavity penetrates through the entire gear shaft in the axial direction and extends; and hollowed-out parts are formed on the shaft wall. According to the transfer case annular gear shaft, lightweight of a product is achieved, lightweight of an entire vehicle is achieved, a machining region is decreased, production efficiency ofmachining is improved, production cost of the product is reduced, labor intensity is reduced, and the productivity is increased. 本发明涉及分动器环形齿轮轴、其制造方法及包括其的设备。本发明的环形齿轮轴具有环形的轴壁，所述轴壁围成中空的内腔，所述内腔沿轴向贯穿整个所述齿轮轴延伸，并且在所述轴壁上形成有镂空部。本发明实现了产品的轻量化、帮助整车实现轻量化，同时减少机加工区域从而提高了机加工的生产效率，降低了产品的生产成本，降低劳动强度，提高生产率。