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Vol. 34, No. 6
June, 2017
 
 
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  Journal of the Korean Society for Precision Engineering  
 
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Journal of the Korean Society for Precision Engineering (JKSPE) is devoted to publishing original research articles with high ethical standard on all aspects of precision…
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Code of Ethics for Academic Activities of the Korean Society for Precision Engineering (KSPE) Enacted on October 9, 2008 Chapter 1: Overall Rules Article 1: Purpose…
Editor-in-Chief: Sun-Kyu Lee
Vice Editor-in-Chief: Dae Eun Kim
JKSPE Editorial Board
ISSN 1225-9071(Print)
ISSN 2287-8769(Online)
Tel +82-2-393-0724 | Fax +82-2-518-2937 |  paper@kspe.or.kr | http://www.kspe.or.kr
 
 
 
 
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Vol. 34, No. 6, pp. 371-376
Title: Study on the Tooth Micro-Geometry Optimization of Planetary Gear for Drive Reducer
Corresponding Author: Sung Ki Lyu
Abstract: A popular approach to optimize the performance of a gear transmission system is the modification of the gear tooth microgeometry, which includes the intentional removal of material from the gear teeth flanks, so that the shape is no longer a perfect involute. Such modifications compensate teeth deflections under load, and the resulting transmission error is minimized under a specific torque. Therefore, micro-geometry modifications can be applied on the involute (or profile) and lead of the gear teeth. In order to study the tooth micro-geometry optimization, this research selected a mass produced planetary gear type drive reducer as a prototype. The original design was modeled by a commercial software named Romax Designer, which analyzes and optimizes different types of gear power transmission systems. The series analysis results obtained reveal some anomalies that require modification. Based on the result, optimization and gear tooth modification were done to deal with the load distributions on gear tooth, gear durability problem, safety factor and bearing life problem. This thesis presents the outstanding performance improvement obtained after such optimization. …
   
Vol. 34, No. 6, pp. 383-390
Title: Determination of Equivalent Moment of Inertia of Flywheel for Inertial Endurance Test of Excavator Slewing System
Corresponding Author: Young-Jun Park
Abstract: This study determined the equivalent moment of inertia of the upper rotating body of an excavator, for the inertial endurance test of an excavator slewing system. The input speed and torque of the slewing reducer were measured by an excavator slewing test, and the equivalent moment of inertia of the upper rotating body of the excavator was calculated using iterative calculation. We developed a dynamic simulation model of the excavator slewing system, and validated the model by comparing it with the slewing test results. Using the validated model, we further developed a simulation model for the inertial endurance test, that considers the moment of inertia of the upper rotating body of an excavator. We concluded that the new dynamic model for the inertial endurance test of an excavator slewing system well exemplified the actual slewing test results. …
   
 
Current Issue Archive
    
    
JKSPE Vol. 34, No. 6
Japan’s Latest Technology Answer to the 4th Industrial Revolution IoT (Internet of Things)
Bongjin Lee

歐美와 對抗해 일본이 내놓은 4차 산업혁명의 신기술 IoT (Internet of Things)
이봉진

J. Korean Soc. Precis. Eng., Vol. 34,  No. 6  pp. 365-368, 2017.
http://dx.doi.org/10.7736/KSPE.2017.34.6.365 
    Full text via DOI      PDF Links
 
Study on the Tooth Micro-Geometry Optimization of Planetary Gear for Drive Reducer
Seung Yoon Noh1, Lae Sung Kim2, Sung Hyun Cho1, and Sung Ki Lyu1

유성기어 주행감속기 치형의 마이크로 지오메트리 최적화에 관한연구
노승윤1, 김래성2, 조성현1, 류성기1

J. Korean Soc. Precis. Eng., Vol. 34,  No. 6  pp. 371-376, 2017.
http://dx.doi.org/10.7736/KSPE.2017.34.6.371 
    Full text via DOI      PDF Links
 
A Study on the Load Sharing among Planet Gears according to the Phase of Carrier Pinhole Position Error in the Planetary Gearbox
Jeong Gil Kim1, Young-Jun Park2, Geun Ho Lee3, Joo Young Oh4, and Young Joo Kim1

유성기어박스의 캐리어 핀홀 위치 오차의 위상에 따른 유성기어의 하중 분할 연구
김정길1, 박영준2, 이근호3, 오주영4, 김영주1

J. Korean Soc. Precis. Eng., Vol. 34,  No. 6  pp. 377-382, 2017.
http://dx.doi.org/10.7736/KSPE.2017.34.6.377 
    Full text via DOI      PDF Links
 
Determination of Equivalent Moment of Inertia of Flywheel for Inertial Endurance Test of Excavator Slewing System
Sang gon Moon1, Young-Jun Park, and Geun ho Lee1

굴삭기 선회시스템의 관성 내구 시험을 위한 플라이휠의 등가관성모멘트 결정
문상곤1, 박영준2, 이근호1

J. Korean Soc. Precis. Eng., Vol. 34,  No. 6  pp. 383-390, 2017.
http://dx.doi.org/10.7736/KSPE.2017.34.6.383 
    Full text via DOI      PDF Links
 
Influence of Design Parameters of Differential Locking Device for Tractors
Joo Young Oh1, Kun Woo Kim1, Jung Woo Cho1, Ki Hun Lee2, and Yeong Sik Jeong2

트랙터용 차동 잠금 장치의 설계 변수 영향에 관한 연구
오주영1, 김건우1, 조정우1, 이기훈2, 정영식2

J. Korean Soc. Precis. Eng., Vol. 34,  No. 6  pp. 391-396, 2017.
http://dx.doi.org/10.7736/KSPE.2017.34.6.391 
    Full text via DOI      PDF Links
 
Control Performance Test of an Electrically-Controlled Variable Valve Timing System Using Servo Motors
Chung-Il Cho1 and Hyeong-Joon Ahn2

서보 모터를 이용한 전자 가변 밸브 시스템의 제어 성능 시험
조충일1, 안형준2

J. Korean Soc. Precis. Eng., Vol. 34,  No. 6  pp. 397-403, 2017.
http://dx.doi.org/10.7736/KSPE.2017.34.6.397 
    Full text via DOI      PDF Links
 
A Study on Design of Cycloid Reducer for Remote Weapons Systems
Jin Seok Park1,2, Ki Hun Kim1,2, Lae Sung Kim3, and Sung Ki Lyu1

원격무장 고저 시스템용 사이클로이드 감속기 설계에 관한 연구
박진석1,2, 김기훈1,2, 김래성3, 류성기1

J. Korean Soc. Precis. Eng., Vol. 34,  No. 6  pp. 405-410, 2017.
http://dx.doi.org/10.7736/KSPE.2017.34.6.405 
    Full text via DOI      PDF Links
 
A Study on Verifying the Reliability of Creep Life Assessment Using Hardness Method for STS304H
Gil Jae Lee1 and Jae Hoon Kim2

경도법을 통한 STS304H 크리프 수명평가의 신뢰성 검증 연구
이길재1, 김재훈2

J. Korean Soc. Precis. Eng., Vol. 34,  No. 6  pp. 411-415, 2017.
http://dx.doi.org/10.7736/KSPE.2017.34.6.411 
    Full text via DOI      PDF Links
 
Effect of High Hardness Armor Plate Sequences on Ballistic Impact Response
Chanyoung Park1 and Chongdu Cho2

고경도 장갑판재 배열이 고속충격거동에 미치는 영향
박찬영1, 조종두2

J. Korean Soc. Precis. Eng., Vol. 34,  No. 6  pp. 417-424, 2017.
http://dx.doi.org/10.7736/KSPE.2017.34.6.417 
    Full text via DOI      PDF Links
 
Load Ratio Effect on Fracture Resistance Curve of SA312 TP304 under Reverse Cyclic Loading Condition
Sang-Young Kim1

역사이클 하중의 하중비 변화가 SA312 TP304 재질의 파괴저항곡선에 미치는 영향
김상영1

J. Korean Soc. Precis. Eng., Vol. 34,  No. 6  pp. 425-429, 2017.
http://dx.doi.org/10.7736/KSPE.2017.34.6.425 
    Full text via DOI      PDF Links
 
A Study on Vibration Reduction Mechanism of Precision Stage for Laser Direct Imaging
Chang Hoon Seo1, Hyeong Gyu Lee2, Yong Ho Jeon1, and Moon Gu Lee1

LDI 노광기용 초정밀 스테이지의 진동 저감 기구에 관한 연구
서창훈1, 이형규2, 전용호1, 이문구1

J. Korean Soc. Precis. Eng., Vol. 34,  No. 6  pp. 431-437, 2017.
http://dx.doi.org/10.7736/KSPE.2017.34.6.431 
    Full text via DOI      PDF Links
 
 
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