A Study on Performance Improvement of Fruit Vegetables Automatic Grafting System

Dong Hyeon Kang; Si Young Lee; Jong Koo Kim; Min Jung Park; Jin Kwan Son; Sung-Wook Yun; Se Woong An; In Kyu Jung

doi:10.12791/KSBEC.2017.26.3.215

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2017 Vol.26, Issue 3 Preview Page Next Page

A Study on Performance Improvement of Fruit Vegetables Automatic Grafting System 과채류 접목시스템 개선 연구

30 July 2017. pp. 215-220

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Abstract

This study was conducted to improve the insufficiency of fruit vegetable grafting system developed by National Institute of Agricultural Sciences, Rural Development Administration. When the rotary blade cut the stem of scions and rootstocks, the grafting failure at curved cutting surfaces happened. The cutting depth of a tomato seedling by a rotated cutter was calculated 0.11 mm even when the cutting arm length and the maximum stem diameter were 50 mm and 5 mm, respectively. Mathematical analysis and high-speed photography showed that there was no problem by cutting in straight the stem of scions and rootstocks. The compression test of seedling stems to design the optimal shape of gripper showed that stems were not completely restored when they were compressed above 0.8 mm and 0.6 mm in case of rootstocks and scion, respectively. This study found that the bending angle of stem of tomato seedlings at the grafting period was 10 degree on average. The optimal gripper finger was the edge finger type which could be precisely set center point by adjusting the distance between fingers. In addition, it was found that most of seedling could be grasped without damage when the finger-to-finger distances is set to 2.5 mm for scion and 3.0 mm for rootstocks and finger are coated by 1 mm-thick flexible material.

Keywords

curved cutting surfaces

optical shape

rotary blade

stem warpage

접수 및 대목 줄기의 회전 절단으로 인한 접목 불량 발생 가능성에 대한 문제점을 해결하기 위하여 수학적 분석 및 고속카메라를 이용하여 실측한 결과 칼날 회전 반경 50mm이고 줄기직경이 5mm 일 때, 깊이는 0.11mm 인 것으로 계산되어 줄기부 곡면 절단에 따른 문제는 없을 것으로 사료된다. 또한 접목시스템에서 모종 줄기 를 잡는 그립퍼의 최적 형상 설계를 위하여 실시한 모 종 줄기 압축시험 결과 대목의 경우 0.8mm 이상, 접수 의 경우 0.6mm 이상의 범위에서 줄기부를 압축 할 경 우 이전 형상으로 완전히 복원되지 않는 것으로 조사되 어 그립퍼 형상 설계 시 그럼퍼 간격 결정에서 고려해 야 할 것으로 사료된다. 또한 접목시기인 토마토 모종의 경우 줄기의 휨이 평균 10도 전후 인 것으로 조사되어 접목불량이 발생할 가능성이 있으므로 이를 개선하기 위 한 추가 연구가 필요할 것으로 사료된다. 최적핑거 형상 시험에서는 모서리핑거 형상이 핑거간 거리 조정을 통해 정확한 중앙점을 잡을 수 있는 것으로 조사되었다. 핑거 간 거리는 접수와 대목에 대해 각각 2.5mm와 3.0mm로 설정하고 신축성 있는 재질을 이용하여 1mm 두께로 코 팅을 하면 대부분의 모종 줄기를 상처없이 파지 할 수 있을 것으로 조사되었다.

키워드

곡선 절단면

최적형상

회전칼날

휨각

References

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Information

Publisher :The Korean Society for Bio-Environment Control
Publisher(Ko) :(사)한국생물환경조절학회
Journal Title :Protected Horticulture and Plant Factory
Journal Title(Ko) :시설원예ㆍ식물공장
Volume : 26
No :3
Pages :215-220
Received Date : 2017-07-07
Revised Date : 2017-07-24
Accepted Date : 2017-07-25
DOI :https://doi.org/10.12791/KSBEC.2017.26.3.215

Journal of Bio-Environment Control ISSN:1229-4675(Print) 2765-3641(Online) 생물환경조절학회지

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