| 摘要 |
687,279. Boring and turning mills. BERTHIEZ, C. W. Dec. 7, 1949 [Dec. 14, 1948], No. 31406/49. Class 83 (iii). A boring and turning mill with a rotary work-table 2 comprises a bracket 10 with a platform 11 for the operator, the platform being supported by a stationary column 12 extending through a central opening in the table. The platform has a guard rail 14 and is adjustable both vertically and angularly about the axis of the table. The machine shown, which is for contour-boring hydraulic turbine shells, has cutting-tools 6 mounted on an arm 5 supported from a head 4 mounted on the head-stock 3, the tools being fed radially by means of a template 7 having a groove 8. Instead of a template, any other attachment or measuring apparatus may be mounted on the bracket 10. A portable control set 17 is provided whereby the operator may control the movements of the various parts of the machine. Specification 687,278 is referred to. |
