| 摘要 |
PURPOSE:To obtain a captioned processing machine capable of processing all journals with only a preworking of centers at both ends thereof, processing with two stages by chucking an intermediate portion of a work and processing without suffering from too much vibration even though the work has a low rigidity. CONSTITUTION:A work 9 processed with centering works at both ends surfaces thereof is supported by center members 5a, 5b at central portion 5, chucks 7a, 7b and respective center members 8a, 8b. A plurality of journal cutters 4a, 4b are provided concentrically at both sides of a cutter spindle 1 and journals J5-J7, J1-J4 opposing to the respective journal cutters are processed thereby. The processing may be effected either separately at right side and left side or in parallel. An intermediate portion of the work 9 is chucked by a rest 10 and the chucks 7a, 7b, therefore, even the work with a low rigidity may be processed without suffering from too much vibration. |
