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http://dx.doi.org/10.7839/ksfc.2020.17.1.001

A Study on the Improvement of Transmission Error and Tooth Load Distribution using Micro-geometry of Compound Planetary Gear Reducer for Tractor Final Driving Shaft  

Lee, Nam Gyu (Department of Biosystems Machinery Engineering, Chungnam National University)
Kim, Yong Joo (Department of Biosystems Machinery Engineering, Chungnam National University)
Kim, Wan Soo (Department of Biosystems Machinery Engineering, Chungnam National University)
Kim, Yeon Soo (Department of Biosystems Machinery Engineering, Chungnam National University)
Kim, Taek Jin (Department of Biosystems Machinery Engineering, Chungnam National University)
Baek, Seung Min (Department of Biosystems Machinery Engineering, Chungnam National University)
Choi, Yong (Upland Mechanization Team, National Institute of Agricultural Science, RDA)
Kim, Young Keun (Upland Mechanization Team, National Institute of Agricultural Science, RDA)
Choi, Il Su (Upland Mechanization Team, National Institute of Agricultural Science, RDA)
Publication Information
Journal of Drive and Control / v.17, no.1, 2020 , pp. 1-12 More about this Journal
Abstract
This study was to develop a simulation model of a compound planetary gear reducer for the final driving shaft using a gear analysis software (KISSsoft, Version 2017, KISSsoft AG, Switzerland). The aim of this study is to analyze transmission error and the tooth load distribution through micro-geometry using the simulation model. The tip and root relief were modified with Micro-geometry in the profile direction, and crowning was modified with Micro-geometry in the lead direction. The transmission error was analyzed using the PPTE (Peak to Peak Transmission Error) value, and the tooth load distribution was analyzed for the concentrated stress on the tooth surface. As a result of modifying tip and relief in the profile direction, the transmission error was reduced up to 40.7%. In the case of modifying crowning in the lead direction, the tooth load was more evenly distributed than before and decreased the stress on the tooth surface. After modifying the profile direction for the 1st and 2nd planetary gear train, the bending and contact safety factors were increased by 31.7% and 17%, and 18.3% and 12.5% respectively. Moreover, the bending and safety factors after modifying lead direction were increased by 59.5% and 32.7%, respectively for the 1st planetary gear train, and 59.6% and 43.6%, respectively for the 2nd planetary gear train. In future studies, the optimal design of a compound planetary gear reducer for the final driving shaft is needed considering both the transmission error and tooth load distribution.
Keywords
Compound Planetary Gear; Reducer; Tooth Modification; Transmission Error; Tooth Load Distribution;
Citations & Related Records
Times Cited By KSCI : 23  (Citation Analysis)
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