Patent ID: 7043805
Filing Date: 2006-05-16
Classification: B23B,B23Q,Y10T

Abstract:
1. An NC lathe comprising: a bed, a headstock provided on said bed, a main spindle supported by said headstock so as to be rotatable around the axis thereof and so that the axis line thereof is in the horizontal direction, a rotation drive device for rotating said main spindle around the axis thereof, a stationary frame formed in a rectangular frame shape and fixed to the upper face of said bed so that the horizontal sides thereof are parallel with the axis line of said main spindle and so that the vertical sides thereof are in the vertical direction, a movable frame formed in a rectangular frame shape so that the horizontal and vertical sides thereof are parallel with the horizontal and vertical sides of said stationary frame, respectively, and provided so as to be movable in a first-axis direction along the horizontal sides of said stationary frame, a first saddle provided so as to be movable in a second-axis direction along the vertical sides of said movable frame and having an accommodation hole passing through in a third-axis direction orthogonal to both of said first axis and said second axis, a quill accommodated inside said accommodation hole in said first saddle and provided so as to be movable in said third-axis direction, a first tool rest supported on the front end face of said quill, a first guide device for guiding the movement of said movable frame along said first axis, a second guide device for guiding the movement of said first saddle along said second axis, a third guide device for guiding the movement of said quill along said third axis, a first feed device for moving said movable frame in said first-axis direction, a second feed device for moving said first saddle in said second-axis direction, a third feed device for moving said quill in said third-axis direction, and a control device for controlling the operations of said rotation drive device, said first feed device, said second feed device and said third feed device.