Research on the centre distance separability of parallel shaft line gear pair

Abstract

For gear pairs with centre-distance separability, transmission ratios are not affected by centre distance error. Based on space curve meshing theory, the centre distance separability of a line gear pair was studied. A novel line gear pair called the separable and pure rolling parallel shaft line gear pair (SPRPSLG) was proposed, which has centre-distance separability characteristics and pure rolling transmission. The basic design theory of the SPRPSLG pair was established. A design method of the SPRPSLG pair with an eccentric arc tooth profile was given. An SPRPSLG pair example was designed and manufactured using the form milling method. Kinematic experiments and meshing efficiency experiments were conducted. Gear contact spot testing and gear contact simulation analysis were carried out. The SPRPSLG pair was shown to have centre distance separability, which provides a further theoretical basis for the popularization and application of line gears.

Design and Investigation of an Asymmetric Logarithmic Spiral Gear Drive

“…Xiao et al [5] designed a pure rolling noncircular gear with fewer teeth. He et al [6] proposed a pure rolling gear with divisible center distance. Wagner et al [7] proposed the gear profiles of pure rolling contact for parallel axis transmission.…”