Mesh contact impact of circular arc tooth trace cylindrical gears
MA Deng-qiu1,3,WEI Yongqiao2,3,YE Zhenhuan1,HOU Li3,LUO Lan3
1. School of Engineering, Zunyi Normal College, Zunyi 563006, China;
2. School of Mechanical and Electrical Engineering, Lanzhou University of Technology, Lanzhou 730050, China;
3. School of Manufacturing Science and Engineering, Sichuan University, Chengdu 610065, China
Abstract:Taking circular arc tooth trace (CATT) cylindrical gears as a study object, in order to get CATT cylindrical gears’ mesh contact impact features, the mesh contact impact hypothesis of CATT cylindrical gears was put forward based on the contact dynamics theory and the gears transmission physical model to establish a gears’ mesh contact impact model. A finite element method was proposed to solve this contact impact problem. According to the tooth surface mathematic model of CATT cylindrical gears, the accurate 3-D digital prototype was established, then the dynamic finite element model to reveal the mesh contact impact process was built to study relations among impact velocity, impact location, impact stress, impact resultant and impact time. The results showed that impact velocity and impact location have a certain influence on impact stress, impact resultant and impact time. The study results provided a theoretical basis for dynamic design and industrial applications of CATT cylindrical gears.
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