| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for enhancing quality of a work surface without requiring supply of a cutting liquid by restraining a temperature rise in a work point in the chamfering work method of a hard fragile plate suitable for chamfering the cut-and-split edge of a glass pane used for, for example, a liquid crystal panel. SOLUTION: A tool edge 6 is contacted with a ridgeline part of the chamfering edge of the hard fragile plate 1, and the hard fragile plate and the tool edge are relatively moved in the ridgeline direction being the cutting direction of a tool, and ultrasonic vibration is imparted to the tool edge 6. The vibration direction of the ultrasonic vibration is desirably set as circular and elliptic vibration or rocking vibration including the movement in the ridgeline direction for chamfering. When the tool is a rotary tool, the vibration direction can be set in the shaft direction of the tool. Work is performed without using the cutting liquid at all, and a superior result is sometimes provided in case of performing the work in a wetted state by dripping of the cutting liquid on the work point. COPYRIGHT: (C)2005,JPO&NCIPI
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