Slide rail device for NC cutting machine

The utility model relates to the machinery technical field, especially to a slide rail device for an NC cutting machine. The slide rail device comprises a controller, and a Y-axis guide rail and an X-axis guide rail arranged on the controller, wherein grooves with circular pipes inserted therein are arranged on both sides of the Y-axis guide rail, the external walls of the circular pipes press against the openings of the grooves, and the controller is slidingly connected onto the Y-axis guide rail through the circular pipes. Hollow stainless steel circular pipes employed in the slide rail device ensure smooth sliding of a controller on a guide rail and improve cutting precision.