| 摘要 |
PURPOSE: To cope with the change in shape of a product by providing a spindle and a guide bar integrally to form a machining shaft, a first part as one end side of this shaft constituting the spindle and a second part of the other end constituting the guide bar. CONSTITUTION: A spindle 6a and a guide bar 6b are integrally provided to constitute a machining shaft 6, a first part as one end side of the shaft 6 constituting the spindle 6a and a second part of the other thinner end side constituting the guide bar 6b. In the opposite side of a rotational tool 8, through-holes 17 and 20 coaxial to the insertion hole 3b of a sleeve 3 are formed in parts 17 and 20 positioned in the outer side of a housing and in a shaft position adjusting means 11, and the inner diameters thereof are set equal to the outer diameter of the spindle 6a or larger. The means 11 is provided with a bush 17 rotalably attached to the spindle 6a and movable in an axial direction, and moved in the axial direction relative to the sleeve 3, a fixing means 19 detachable from the outside for fixing this to the spindle 6a, and its operation port 16a. |
