• Journal of the Korean Society of Manufacturing Process Engineers
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• v.19 no.7
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• pp.52-59
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• 2020

Automatic tool changers (ATCs) can be divided into drum and chain types. Drum-type ATCs contain a magazine, where the tools are mounted, and a cam gearbox, which swaps the tools via roller gear and grooved plate cams. Drum-type ATCs are advantageous in that the operating time for the tool magazine is more rapid than that of chain-type ATCs and the length of the unit is shorter. Thus, drum-type ATCs can be fabricated into various shapes and forms depending on the number of tools and the magazine size in accordance with machining center requirements and consumer demand. In particular, the price competitiveness of a machining center with a drum-type ATC is higher, while drum-type ATCs are more rigid with fewer parts, possibly reducing the need for regular servicing. This study aims to verify the structural stability and design validity of the magazine base, which is the main structure of a drum-type ATC, using finite element analysis. This study kinematically verifies the specifications of the selected drive motor and reducer and assessed the design of the cam gearbox. It also conducts a structural analysis of the roller camp, which is the core component of the cam gearbox, based on the results of the kinetodynamic analysis, thus validating the structural design.

• Journal of the korean veterinary medical association
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• v.17 no.2
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• pp.42-54
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• 1981

• 기계와재료
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• v.3 no.1 s.7
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• pp.130-142
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• 1991

• The monthly packaging world
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• s.84
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• pp.154-157
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• 2000

• The monthly packaging world
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• s.193
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• pp.80-85
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• 2009

• JOURNAL OF ELECTRICAL WORLD
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• no.9 s.117
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• pp.38-41
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• 1986

• JOURNAL OF ELECTRICAL WORLD
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• no.7 s.127
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• pp.2-5
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• 1987

• Fire Protection Technology
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• s.19
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• pp.39-43
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• 1995

• Korean Architects
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• s.547
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• pp.64-65
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• 2014

• 보존과학연구
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• s.17
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• pp.39-47
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• 1996

In this research, many effects were examined by testing of adhesive intensity and accelerated weathering with synthetic resins for the conservation treatment of cracks and damaged parts of Kyound Chun-Sa10-story Pagodas, the National Treasure No. 86.It was tested with two kinds of Epoxy resins, Acrylic, Silicone resin, and five kinds of Acetics vinyl resins, and then which was ensured a successful result with Epoxy resins. According to these consequences, they are determined to treat damaged parts with Epoxy resin.