...Zeying Li; Yonghong Chen; Wenjun Luo; Bingkui Chen To satisfy the increasing requirements of high-precision and zero-backlash transmission in the modern machine tools and industrial robots, a precision measurement method of roller enveloping hourglass worm tooth surface is demonstrated. The profile...

...Zhiqin Cai; Chao Lin The curve-face gear pair is a new type of face gear pair with a variable transmission ratio. Concerning the complexity of its tooth surface, based on the coordinate transformation principle and the spatial meshing theory, a discrete algorithm of this tooth surface was proposed...