The the spark machine is a mechanical processing equipment, mainly for EDM. Widely used in all kinds of metal mold, machinery and equipment manufacturing. Mainly used for processing spark processing type holes and cavity molds and parts with complex shapes; processing of various hard, brittle materials, such as cemented carbide and hardened steel; processing deep pore, Hole, deep grooves, narrow sewing and cutting sheet; processing of various shaped tool, a model and a threaded ring gauge tool. Substantial increase in coarse, finishing efficiency spark machine under the premise to ensure the accuracy of the processing. Areas such as the cell phone case, home appliances, electrical appliances, electronic instruments, the discharge time of a large area of ??the workpiece can be shortened, while reducing the roughness.