| 摘要 |
PURPOSE:To surface-cut by a single tool, stably with a high degree of accuracy by setting the linear apex part between a pair of crossing flanks of a cutting tool to be parallel with a surface to be cut of a workpiece, and by moving the tool by a predetermined cutting depth, relative to the workpiece. CONSTITUTION:One end part of a holder 2 is fastened to a tool bed on a shaper to be adjusted so that the attaching angle of a cutting tool 1 is set to be 0 deg. with respect to a secured surface 7 to be cut. At this time a corner 8 which is a linear apex between a pair of flanks 4, 5 of a chip 3 becomes parallel with the surface 7 to be cut. The cutting tool 1 is displaced in the direction of the arrow 9 to set a cutting depth in accordance with the position of the forward end of the corner 8 as a reference position, and the tool bed is reciprocated in the direction of the arrow 10 to shape-cut the surface 7. In this arrangement, the forward end area of the corner 8 is broken by shocks, but since the relieving angle is set to an angle of zero deg., the shape-cutting may be continued by another adjacent parts which are not yet broken.
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