Bridge machines are a type of machine tool that can perform various operations on large workpieces, such as milling, drilling, boring and grinding. They have a bridge-like structure that spans over the workpiece table and supports the spindle head. Bridge machines can be classified into bridge mills, gantry mills and boring mills, depending on the configuration and movement of the bridge and the table. Bridge machines are widely used in various industries, such as aerospace, defense, energy and mining. They offer high rigidity, stability and accuracy for heavy-duty machining.