Control Manipulation and Handling Skill of Flyer Type Hand Spinning Machine

Recently there has been a demand to spin materials with low spin-ability such as fiber disentangled from waste cloth and special functional fiber in the system of the multi kind and small-quantity production. However modern textile machine systems cannot satisfy it. We have project to develop a spinning system that meets this demand by modeling a human hand spinning system with a spinning wheel and flyer.The purpose of this paper is to examine the principle of a hand spinning system with them from the point of view of control engineering. The rotational speed of the bobbin, position of the right hand, the clamping force of each hand, the thickness of the yarn, etc. were measured in real time. Experimental results revealed that the thickness of the yarn was controlled by the position of the right hand and the twist ratio of the yarn was controlled by the twisting time. Observation and experiment revealed several kinds of human skill such that a slight counter twist action by fingers of the left hand was effective for continuous normal draft operation. Obtained results are useful for the development of the new spinning system mentioned above.