Werkzeugmaschine

摘要

1,006,059. Machine tool details. GIDDINGS & LEWIS MACHINE TOOL CO. Jan. 7, 1964 [Jan. 8, 1963], No. 793/64. Headings B3B and B3T. A machine tool comprises a bed carrying a movable saddle and work-table, a column carrying a movable head stock supporting a horizontally movable and rotatable tool spindle, and a power transmission for providing variable rates of movement of the movable members comprising a power unit in the headstock for rotating the spindle, a second drive unit in the bed for moving the elements, and a coupling for selectively interconnecting the units. A horizontal boring mill comprises a bed 22, Figs. 1 and 2, secured to a foundation 23, a saddle 28 slidable on ways 26 and 40 on the bed, a worktable 30 slidable on ways 31 on the saddle, and headstock 37 vertically movable on ways 39 formed on a column 35. Feed screws SS, TS and HS, Fig. 10, are provided for moving the saddle, table, and headstock respectively, and a screw ES is provided for moving the end support. The feed screws are driven either from a motor M in the machine bed or from a motor HM in the headstock, the latter motor also driving tool spindle 46 through a planetary gear arrangement 192. The drive from motor M is through a gear train 107-116, a clutch 120, a planetary transmission unit 95, gear train 128-130, gear 133, and clutches 141-143, the drive being reversible for any, or all of the feed screws, through a pinion 151. The drive from motor HM is through a gear train 210, 217, a train 221-226, and clutch 120. A lead screw 270 for feeding the tool spindle is driven from shaft 132 through couplings 233, 235, shaft 240, a gear train 257, and clutch 263, or in the reverse direction through a gear train 248 and clutch 263. Column 35, Figs. 8, 9, is mounted directly on foundation 23, and is rigidly fastened to wall 221 of bed 22. Transmission unit 45, Fig. 3, including motor M, is supported on pads 60, Fig. 5, in a cavity 55 in bed 22 so as to leave channels for circulating cooling air, Figs. 4 and 8, thus insulating the machine from the transmission units. The casing 52 of unit 45, Figs. 3 and 4, has a depending portion 65 for alignment purposes, and encloses a lubricating oil reservoir 75, for pump 112, Fig. 10. Motor M has a fan 85, Fig. 4, which communicates with the air passages between casing 52 and the walls of cavity 55. Unit 95 comprises a number of interchangeable sections I-III, Fig. 10, selected to give the required speed changes, and is mounted by its manifold plate 124, Fig. 3. Fluid controls including solenoid valves S are mounted on the plate, and are connected to a fluid pressure source for accomplishing ratio changes and shifting of transmission unit brakes. Specification 975,809 is referred to.