Slider stroke: High-speed punch slider stroke refers to: punch in the case of no-load, the slider from top dead center to the bottom dead center by the distance. Gantry high-speed punch stroke size should be able to ensure the rough or semi-finished products into the shape and parts removed. General punching, sizing process required less stroke; bending, drawing process requires a larger stroke. Drawing parts used gantry high-speed punch, the stroke should be greater than or equal to at least 2.5 times the height of finished parts.