| 摘要 |
PURPOSE: To stitch-machine deep and narrow cavities in workpieces by using a tubular housing axially-interlocking with a rotation-driven spindle which is supported on the tubular housing. CONSTITUTION: A cylindrical hole 13 in a workpiece 14 is stitch-machined. This apparatus is provided with a rotation-driven spindle 23 which extends over the almost overall length of the axial length of the hole and retains a cutting tool 24 adjustable in radial direction at its front end, and tubular housing supporting bodies 10, 19, 20 for bearing the spindle 23 fixed so as to be capable of moving axially as a result of a tubular housing 10 interlocking with the spindle and so as not to rotate. This apparatus is also provided with means 47, 13, 23a, etc., for guiding the tubular housing supporter and the spindle 23 exactly in a hole 13, and means 31, 34, etc., for adjusting the orientation of the cutting tool 24 radially and conducting different type of machining using the tool 24. |
