鎖鋸による切削 （第１報）
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概要
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Nowadays chain sawing machines have been prevailed throughout of the world not only in forestry but also in lumbering, civil engineering and so on. Neverthless, as cutter of saw chain is of pecular shape and presents complicated cutting mechanism, investigation about saw chain has scarcely been developed. The purpose of this research was to measure the cutting force and investigate the cutting mechanism as the first step for the synthetic study about chain sawing machine and saw chain. The experiment consisted of three parts Experiment (1) was the measuring of cutting force while the chain sawing machine being drived and wood specimen being cut through. Experiment (2) was that in order to know the situation of cutting in single cutter, cutting force was measured using the cutter which was restricted from rotation itself being fixed to the rneasuring apparatus. Experiment (3) was that in order to observe the rotation of cutter, cutting force in single cutter of the actual saw chain was measured and scene of the cutter motion was taken in photogragh. This report gives us the summary of cutting characteristics of saw chain which was made clear though the experiments and we can recognize that many problems for further discussion exist in saw chain. They are summarized as follows : (a) As the relation between cutting and chip formation is special the problem of chip formation and number of cutter which will take part in actual cutting must be investigated. (b) The research for the reason based on the suitable chain tension is expected by means of cutting force theory. (c) The problem about rotation of chain link which causes the vibration and changing of cutting force is very inportant, and the study of tooth shape also must be examined. Moreover, it is previous question that we grasp the relation between cutting force and the change of the rake angle caused by inclination of cutter. For this purpose, the experiment with isotropic substance must be considered.
- 北見工業大学の論文
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