| 摘要 |
PURPOSE:To cut a concave groove the fitting a snap ring or O ring into an inner surface of a hole drilled in advance. CONSTITUTION:A unit A carried out of a magazine is loaded into a tapered hole 4 on a spindle 1 at a working section 2 while a limit switch B is mounted on the engaging base 5. A spindle 29 of the unit A rotates around a rotary axis line D with an eccentric cam pin 34 on a drive shaft 33, while a cutter 30 is mounted at the shaft end in the radial direction. The cutter section 30 is inserted deep into a hole G on a work F. Upon the inputting of the rotation to the spindle 1, with the eccentric rotation of the cutter 30, a desired concave groove I is formed on the inner surface H. |
