| 摘要 |
PURPOSE:To make it possible to carry out machining processes with various angles, by including the axis of a casing rotatably journalling a cutting tool, with respect to a part of a workpiece to be machined, and by enabling the cutting tool to be advanced and retracted within the casing. CONSTITUTION:A tapered fitting section 50 fitted in a hole part 48 in an attaching bed 46 is provided in one end part of a rotary tool holder 44, and a gripping section 52 is formed in a larger diameter side end part of the fitting section 50. Further, a gear casing 64 inclined with respect to a hole section 8 for machining a workpiece 2a, is formed in the end part of a body section 58, and a coupling member 66 is secured to the inclined end face of the gear casing 64. A cylindrical casing member 98 concentrically surrounding a cylinder 90 is secured at its one end to the coupling member 66. That is the center of the casing member 98 is inclined directing axially and radially. A hole section 100 is formed in the center section of the casing member 98, directing axially, and is communicated at its one end part with a large diameter chamber 12 through the intermediary of a stepped part. |
