Experimental investigation of power transmission efficiency at various shaft angles using a pair of spherical gears
Spherical gears, unlike spur gears, facilitate motion across multiple degrees of freedom. This study constructs a speed increaser utilizing a pair of spherical gears with a transmission ratio of 0.8, where the shaft angle is adjustable from 0° to 60°. Experiments measuring power are performed at rot...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
The Japan Society of Mechanical Engineers
2025-06-01
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| Series: | Journal of Advanced Mechanical Design, Systems, and Manufacturing |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/jamdsm/19/2/19_2025jamdsm0023/_pdf/-char/en |
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| Summary: | Spherical gears, unlike spur gears, facilitate motion across multiple degrees of freedom. This study constructs a speed increaser utilizing a pair of spherical gears with a transmission ratio of 0.8, where the shaft angle is adjustable from 0° to 60°. Experiments measuring power are performed at rotational speeds ranging from 100 min−1 to 600 min−1. The findings reveal that power transmission efficiency generally falls between 0.7 and 0.8 when the shaft angle is static. Additionally, efficiency calculations are conducted while dynamically altering the shaft angle, with data captured via a draw-wire encoder. Although efficiency levels largely mirror those observed with a fixed angle, notable fluctuations occur under certain conditions. The experiments demonstrate that an increase in both rotational speed and shaft angle tends to reduce efficiency slightly and enhance variation. |
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| ISSN: | 1881-3054 |