[ Papers ]

Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 27, No. 6, pp.570-576

ISSN: 2508-5093 (Print) 2508-5107 (Online)

Print publication date 15 Dec 2018

Received 31 Oct 2018 Revised 27 Nov 2018 Accepted 27 Nov 2018

DOI: https://doi.org/10.7735/ksmte.2018.27.6.570

케이블 캐리어의 작업조건이 동특성에 미치는 영향

신응수^a^{, *} ; 김기성^a

Influence of the Operating Conditions of a Cable Carrier on the Dynamic Characteristics

Eung-Soo Shin^a^{, *} ; Kee-Sung Kim^a

aSchool of Mechanical Engineering, Chungbuk National University, 1, Chungdaero, Seowon-gu, Cheongju, Chungbuk-do, 28644, Korea

Correspondence to: ^*Tel.: +82-43-261-3159 Fax: +82-43-263-2448 E-mail address: esshin@cbnu.ac.kr (Eung-Soo Shin).

Abstract

This study investigates the dynamics characteristics of a cable carrier with respect to the variations in carrier length and axially moving speed. The characteristic equation of the carrier’s lateral vibration is derived from the configuration of blocks connected through pin joints. Then, the modal characteristics and stability behavior of the carrier are obtained by solving the characteristic equation numerically. Results show that natural frequencies decrease as the carrier speed increases, particularly around the stability boundaries. The instability of divergence and flutter occurs as the carrier speed increases. In addition, the critical speed at the stability boundary is observed to be inversely proportional to the carrier length, which requires a tradeoff between the carrier’s workspace and the productivity of the carrier.

Keywords:

Cable carrier, Axially-moving beam, Lateral vibration, Modal characteristics, Stability

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