Shigeo Zaima1, Yasuo Suzuki2 and Masao Yamashita3
1Department of Mechanical Science, Faculty of Engineering, Shizuoka University, Hamamatsu
In this paper, using epoxy resin plates for an orthogonal cutting model similar to orthogonal aluminium cutting, the stress distribution in the specimen in the vicinity of tool tip is pursued by changing the factors corresponding to the cutting conditions. As a whole, in this experiment, σ x, i.e. the stress in the x-direction corresponding to the cutting direction, is compression in the front of the tool tip and is tension in the rear of the tool tip; σ y, i.e. the stress in the direction perpendicular to the x-direction, is compression in the whole area. When the rake angle of the tool is small, σ x shows a large compressive force and σ y distributed as compression on the chip side increases. In the case of a round nose tool tip, both σ x and σ y increase to the compression side just in front of the tool tip. When the radial force increases in comparison with the principal force, the compression σ x in the front of the tool tip increases and the tension σ x in the rear of the tool tip decreases.
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