Chip-flow lathe

摘要

389,690. Lathes. MAGDEBURGER WERKZEUGMASCHINENFABRIK AKT.- GES., 1, Schwiesaustrasse, Magdeburg, Germany. June 13, 1932, No. 16670. Convention date, Dec. 28, 1931. [Class 83 (iii).] A lathe designed for high-speed operation with hard metal cutting tools is provided with a triangular bed and a slide inclined to the horizontal plane through the axis of rotation which arrangement enables the chips to be rapidly conducted away to a space below the machine. The triangular bed 7 carried by uprights 23 has guiding surfaces at its apex and lower outside face for the saddle 2 ; the cross-slide is mounted on the saddle so that it moves parallel to the inclined face of the bed, this combined with anticlockwise rotation of work and inversion of the tool ensures that the cuttings come off the work and strike approximately at right-angles the hardened steel plates 8 which cover the inclined bed surface. A tapered gib 14, arranged between the sloping surface of the bed and the saddle, enables adjustments for wear to be made. Adjustable hoods 25, 27 cover the space at the back of the machine and a hinged plate 10, pressed against the work by a counterweight, prevents chips from clinging to the work and jamming under the tool. The chips are collected in a removable truck 21 which fits under the machine, lubricant being drained through a perforated plate in the bottom and returned through a pipe 46 to a sump in the column 23. The space below the bed may be utilized for the driving mechanism which may include a selfcontained motor.