Research on geometrical characteristics of straight bevel gears with a small shaft angle with a non-generated gear and generated pinion

• Main Authors: Syzrantsev Vladimir, Syzrantseva Ksenia, Pazyak Andrey, Milanović Marija
• Format: Article
• Language: English
• Published: University of Belgrade - Faculty of Mechanical Engineering, Belgrade 2017-01-01
• Series: FME Transactions
• Subjects: straight bevel gears; drive; non-generated gear; straight teeth; gear cutting; equation of meshing; principal reduced curvature; lines of action
• Online Access: https://scindeks-clanci.ceon.rs/data/pdf/1451-2092/2017/1451-20921704661S.pdf

Based on the precessional bevel gears with a small shaft angle, a number of drives for oil and gas equipment have been developed. They are characterized by high efficiency (about 0.9) and a small starting torque. Due to multi-pair tooth meshing they have a higher load capacity as compared to other types of gears, which provides a safe drive operation in the Far North. Currently, the most studied gears are bevel gears with a small shaft angle with double-concave-convex teeth. However, the process of gear cutting for such gears is extremely complicated - the machine has to be reset four times. The cutting technology can be simplified by using gears with a non-generated gear and a generated pinion. The article provides calculations of the lines of action in meshing and the principal reduced curvature for a straight bevel gears with a small shaft angle with a non-generated gear and a generated pinion, geometrical characteristics necessary for determining the contact stress arising in tooth meshing and for developing methods of calculating the gear load capacity.