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한국생산제조학회 학술지 영문 홈페이지
[ Papers ]
Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 28, No. 4, pp.224-231
ISSN: 2508-5107 (Online)
Print publication date 15 Aug 2019
Received 18 Jun 2019 Revised 01 Aug 2019 Accepted 02 Aug 2019
DOI: https://doi.org/10.7735/ksmte.2019.28.4.224

보텍스 방식의 비접촉 그리퍼에서 에어 헤드 형상이 파지력과 스월 유동 안정성에 미치는 영향

김준현a ; 성재용b, *
Influence of Air Head Shape on Lifting Force and Stability of Swirl Flow in a Vortex-Type Non-Contact Gripper
Joon Hyun Kima ; Jaeyong Sungb, *
aNDT Center, Seoul National University of Science & Technology 232 Gongneung-ro, Nowon-gu, Seoul 01811, Korea
bMechanical and Automotive Engineering, Seoul National University of Science & Technology 232 Gongneung-ro, Nowon-gu, Seoul 01811, Korea

Correspondence to: *Tel.: +82-2-970-6398 Fax: +82-2-949-1458 E-mail address: jysung@seoultech.ac.kr (Jaeyong Sung).

Abstract

A vacuum for non-contact gripping can be generated using a circular air head. The present study has numerically investigated the influence of the air head shape on the vacuum lifting force and swirl flow stability in a vortex-type non-contact gripper. The grip stabilities of swirl and lifting force variations were analyzed according to the air head end-effector, head chamber, and inner column sizes. Results show that the maximum lifting force occurs at a gap thickness of about 0.5 mm . Although in general, the longer the tip length, the larger the vacuum pressure that forms, an optimum tip length exists when considering the lifting force stability as a small head height might lead to unstable swirl flow. To enhance the stability of swirl, the installation of an inner column is an acceptable alternative irrespective of the 20 to 30% reduction of lifting force.

Keywords:

Non-contact gripper, Bernoulli levitation, End-effector, Swirl flow, Air head, Lifting force

Acknowledgments

이 연구는 2019년 과학기술정보통신부의 재원으로 한국연구재단의 지원을 받아 수행된 기초연구사업임(No. 2019R1F1A1056931).

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