Elucidation of motor skills focusing on the line of sight of the beginning to cut in wood cutting skills

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  • 木材切断技能における切り始めの視線に着目した巧緻性の解明
  • モクザイ セツダン ギノウ ニ オケル キリ ハジメ ノ シセン ニ チャクモク シタ コウチセイ ノ カイメイ

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Abstract

The shortage of highly-skilled workers such as carpenters to build shrines has become a serious issue. Furthermore, it takes time to train highly skilled workers. Therefore, we aimed at developing a guidance method to acquire the wood processing skill in a short period of time. In order to do this, it is essential to figure out "where the expert watches, when, where, and how much power is used to manipulate tools". To investigate these critical points, we researched "where the expert watches at the beginning to cut, as an important point for cutting wood with a saw. An eye camera was used to investigate the gaze position and the data was compared with the one by unskilled persons. Our research found the following two points. First, at the beginning of cutting, the expert was moving the line of sight along the cutting line. This means that the expert is checking where to disconnect after a few seconds and the cutting stage simultaneously. Second, the expert watches not only the cutting line drawn on the plane of the lumber but also the cutting lines on the edge of lumber at the same time.

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