This series of double-column vertical lathe suitable for motor, turbine, aerospace, mining machinery, metallurgical and general machinery industry, can be used for internal and external cylindrical surface, conical surface, grooving and other rough and finish. 1, the machine by the left, the left column, roof beams, consisting of the table base frame structure, rigidity, can withstand greater cutting load. 2, moving up and down the rail beam along the column by the disc spring by clamping lever the columns, beams and down buttons to manipulate the suspension button station, there are micro-actuator adjustable beam horizontal position on the beam. 3, left and right vertical turret mounted on the beam, the beam turret equipped for manual operation handle, allowing you to adjust the position of the tool holder and the knife. ram weight balanced by the pressure of oil in the upper turret carriage is equipped with two unloading roller, tighten the set screw to adjust the upper end of the roll unloading sub-carrying capacity, in order to reduce the force manual operation. 4, beams, each equipped with a turret on the left and right hand pressure lubrication pumps, so that the operator easily lubricate them. 5, the electrical control PLC programmable controller control.