CK/CKP6163-6180-6194 economic CNC lathe series adopts semi-closed-loop control system, suitable for processing various complex shapes of shafts, sleeves, disc parts, such as turning inner and outer cylindrical surfaces, conical surfaces, arc surfaces, end faces, etc., especially suitable for multi-variety, small and medium-sized batch rotation processing, strong process adaptability, high processing efficiency. Easy programming and simple operation.