Journal of Bionic Engineering ›› 2021, Vol. 18 ›› Issue (4): 974-990.doi: 10.1007/s42235-021-0056-5
Improvement of Deep Groove Ball Bearing’s Performance Using a Bionic Textured Inner Race
K. E. Ch. Vidyasagar1,2, R. K. Pandey3, Dinesh Kalyanasundaram1,4*
- 1. Center for Biomedical Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
2. Department of Biomedical Engineering, College of Engineering, Osmania University, Hyderabad 500007, India
3. Department of Mechanical Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
4. Department of Biomedical Engineering, All India Institute of Medical Sciences, New Delhi, 110029, India
Improvement of Deep Groove Ball Bearing’s Performance Using a Bionic Textured Inner Race
K. E. Ch. Vidyasagar1,2, R. K. Pandey3, Dinesh Kalyanasundaram1,4*
- 1. Center for Biomedical Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
2. Department of Biomedical Engineering, College of Engineering, Osmania University, Hyderabad 500007, India
3. Department of Mechanical Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
4. Department of Biomedical Engineering, All India Institute of Medical Sciences, New Delhi, 110029, India
摘要： Micro-textured surfaces have improved the tribological performance of contact surfaces under lubricated conditions; however, not practiced due to manufacturing challenges. In addition to simpler micro-pits or straight-trench type textures, sophisticated bioinspired textures on commercial radial ball bearings have been scarcely studied. In this work, Dendroaspis polylepis (Mamba snake) skin-type textures were fabricated on the inner race of FAG radial ball bearings using a nanosecond fiber laser machine. Though the snake textures were primarily meant to enhance friction, the dimensions of the texture have been carefully chosen to improve the tribological performance under lubricated condition. The textured bearings were assembled and experimented at various rotational speeds and lightly loaded conditions to measure vibrational amplitude, frictional torque, and temperature rise. Compared to untextured (conventional) bearing, the snake-skin type textured bearings resulted in improved tribo-dynamic performance.