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[ Papers ] | |
Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 30, No. 3, pp. 197-202 | |
Abbreviation: J. Korean Soc. Manuf. Technol. Eng. | |
ISSN: 2508-5107 (Online) | |
Print publication date 15 Jun 2021 | |
Received 07 May 2021 Revised 10 Jun 2021 Accepted 10 Jun 2021 | |
DOI: https://doi.org/10.7735/ksmte.2021.30.3.197 | |
농기계 변속기용 부변속 구동축의 축방향 열간 단조를 위한 성형해석 | |
조영태a, *
| |
Forging Analysis for Hot Axial Forging of Sub-shift Drive Shaft with Agricultural Machinery Transmission | |
Young-Tae Choa, *
| |
aDepartment of Basic Science, School of Eng., Jeonju University | |
Correspondence to : *Tel.: +82-63-220-2981 E-mail address: choyt@jj.ac.kr (Young-Tae Cho). | |
Existing sub-shift drive shafts used for the transmission of agricultural machinery are manufactured using the cutting process; therefore, they fail frequently owing to the heavy loads and impacts associated with intensive agricultural work. This paper presents an analytical study to improve the durability of the sub-shift drive shaft via axial hot forging with a mold. A maximum axial load of 141 tons was required to forge a ø45 × 365 mm SCM420 round bar in a ø45 (ø74) × 303 mm mold through heating at 1000℃. During forging in the axial direction, metal flow lines were well-formed along the gear-forming shape. Thus, the durability of the shaft was improved during the gear-forming process, and the weight of the raw material was reduced by 58% compared with that under the cutting process.
Keywords: Sub-shift drive shaft, Agricultural machinery, Forging analysis, Hot lateral forging, Metal flow line |
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An associate professor at the Dept. of Basic Science, College of Engineering, Jeonju University, Jeonju, Korea.He is interested in mechanical design, FEM analysis and nondestructive testing and evaluation of infrared thermography.
E-mail: choyt@jj.ac.kr