2002 Fiscal Year Final Research Report Summary
Development of Hand Spinning Robot System for Special Functional Yarns Modeling after Control Mechanism and Operational Skill in Man-Hand Spinning
| Project/Area Number |
11555070
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
Intelligent mechanics/Mechanical systems
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| Research Institution | Shinshu University |
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Principal Investigator |
NAKAZAWA Masaru Faculty of Textile Science and Technology, Shinshu University, Professor, 繊維学部, 教授 (90021138)
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| Co-Investigator(Kenkyū-buntansha) |
MATSUMOTO Youichi Faculty of Textile Science and Technology Professor, 繊維学部, 教授 (50021176)
TORIUMI Kouichiro Faculty of Textile Science and Technology Professor, 繊維学部, 教授 (40016374)
KAWAMURA Takashi Faculty of Textile Science and Technology Lecturer, 繊維学部, 講師 (70242675)
MARUTA Akira Kanai Juyo Kogyo Co., Ltd. Member of the Laboratory, 開発室研究員
YAGYU Kiyohide Kanai Juyo Kogyo Co., Ltd. Chief of the Laboratory, 研究開発室長
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| Project Period (FY) |
1999 – 2002
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| Keywords | spinning / hand spinning / fiber / recycle / robot / Gara-bo / twist draft spinning / yarn |
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| Research Abstract |
Hand spinning robot systems for special materials were developed modeling after control mechanism and skill of operation in man hand spinning. These systems can spin rather rough and irregular materials and are adaptable to large item and small amount production. The modern spinning machine cannot spin such materials and cannot fit for such style productions. The principle idea was obtained by the research of old spinning machines and spinning methods such as hand wheel spinning with spindle or flyer and Gara-bo (Japanese throstle spinning machine) which was invented in Japan in 1870's. These old spinning machines have special characteristics to be able to deal with rough and irregular materials and adaptable to small amount production. The authors revealed that these characteristics were caused by the "twist draft spinning mechanism" and developed the automatic spinning machines based on old twist draft spinning machines.
It was proved that the systems could spin (a) disentangled fiber of waste cloth containing wool, acrylic fiber, polyester fiber, etc. and (b) remnant of non-woven cloth of needle punch type. These systems are convenient to apply to "Fiber recycle" of waste cloth.
Basic equations to control the systems and design specification of yarn were obtained as follows;
λ = C_<tλ>ρ^<1/(2b)>T^<(-1)/2> D = C_<td>ρ^<(-1)/(2b)>T^<1/2>
where, D=Yarn Diameter, λ=Twist rate, T=Yarn tension, ρ=Density of clamped fiber assemble, C_<tλ>, C_<td>=Coefficients independent ρ. Above equations indicate that if D is able to measure D can controlled constant operating λ so as to make T constant.
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