... such as suddenly power off and the break of carving tool.5) Keep the engraving speed constantly at both curve and ... .6) Equip with large power water cooling motor for the spindle, also synchro cooling fan for the servo motors, to avoid ... multi-spindles, vacuum cleaner, lathe bed of vacuum adsorption, syringe, Automatic Tool Changer, twin guidways, etc., to support different user's requirement.