Toshiba Kikai Kabushiki Kaisha

Haruhito Sugiyama

Takeshi Momochi

Makoto Sagara

Masahito Shiozaki

Michio Matumoto

A control apparatus for a drilling machine and a drilling method capable of quick adaptation to drilling by drills of various diameters, especially drills of small diameters, and of improving cutting efficiency. The control apparatus includes a cutting condition setting unit for setting the cutting conditions in accordance with the depth of the hole being drilled and a control unit for controlling the rotary speed and movement position of the drill. The cutting condition setting unit defines the regions of the beginning part, the inner part, and the penetration part from the side close to the drill of the workpiece toward the depth direction of the hole of the workpiece in accordance with the depth of the hole when drilling a throughhole.

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Gotemba, Japan

Haruhito Sugiyama