The invention relates to the technical field of
metal processing machine tools, in particular to a lathe
bed structure capable of being used for reverse
processing, forward
processing and reverse processing and forward processing combined processing. Comprising a
machine frame, a sliding rail horizontally fixed to the
machine frame, an inverted turning tool
tower fixed to the machine frame, an upright turning tool
tower fixed to the machine frame, an upright turning clamping main shaft fixed to the machine frame, an upright turning tool
tower connected to the sliding rail in a sliding mode and an inverted turning clamping main shaft connected to the sliding rail in a sliding mode. The sliding rail comprises a
high rail and a low rail which are arranged in parallel, the low rail is located on the side close to the inverted turning tool tower, the vertical installation height of the low rail is larger than the height of the inverted turning tool tower, the installation direction of the inverted turning tool tower is parallel to the direction of the sliding rail, and the installation direction of the upright turning tool tower is perpendicular to the direction of the sliding rail. Performance breakthrough is achieved through innovative design of the
machine tool, rigidity and precision are improved through
cutting load self-balancing in the high-low rail
layout, the hidden danger of
machine tool chatter is eliminated, and guide rail abrasion is reduced; the directions of the inverted and upright turning tool turrets are optimized, the problems of
machining interference and vibration are solved, the
machining range is widened, and the
machining precision is guaranteed.