Izvorni znanstveni članak

https://doi.org/10.21278/TOF.494074624

Preliminary Oil Film Analysis of EHL Based on Cutter Tilted VH-CATT Cylindrical Gear

Yongping Liu ; School of Mechanical and Electrical Engineering, Lanzhou University of Technology, Lanzhou 730000, People’s Republic of China; State Wenzhou Engineering Institute of Pump & Valve, Lanzhou University of Technology, Wenzhou, 325000, People’s Republic of China *
Linli Bao ; School of Mechanical and Electrical Engineering, Lanzhou University of Technology, Lanzhou 730000, People’s Republic of China
Dengqiu Ma ; School of Engineering and Technology, Zunyi Normal College, Zunyi, 563006, People’s Republic of China
Changbin Dong ; School of Mechanical and Electrical Engineering, Lanzhou University of Technology, Lanzhou 730000, People’s Republic of China
Yongqiao Wei ; School of Mechanical and Electrical Engineering, Lanzhou University of Technology, Lanzhou 730000, People’s Republic of China
Bing Jiang ; School of Mechanical and Electrical Engineering, Lanzhou University of Technology, Lanzhou 730000, People’s Republic of China

* Dopisni autor.

Sažetak

This study investigates the factors influencing oil film thickness on the tooth surface of variable hyperbolic circular-arc-tooth-trace (VH-CATT) cylindrical gears, aiming to optimise lubrication performance and mitigate poor oil film formation near meshing points. A mathematical model of the VH-CATT gear tooth surface is developed based on large cutter tilt milling principles, forming the basis for tooth contact analysis (TCA) and elastohydrodynamic lubrication (EHL) models. These models predict key lubrication parameters, such as minimum and central oil film thicknesses, under various gear design and operational conditions. The analysis shows that increasing the cutter tilt angle enhances both central and minimum oil film thicknesses during meshing. Similarly, higher modulus and pressure angles significantly improve lubrication performance, while a slight increase in the tooth line radius also contributes to thicker oil films. The findings provide theoretical insights into the interaction between gear design parameters and lubrication behaviour, offering practical guidance for improving lubrication performance, reducing friction and wear, and enhancing the efficiency of VH-CATT cylindrical gear systems. These results have significant implications for the design and operation of advanced gear transmission systems in engineering applications.

Ključne riječi

VH-CATT cylindrical gears; the forming principle of large cutter tilt processing; central oil film thickness; minimum oil film thickness; preliminary analysis of oil film

Hrčak ID:

341617

URI

https://hrcak.srce.hr/341617

Datum izdavanja:

10.12.2025.

Posjeta: 194 *