Bridge type machining centers, also called double column machining centers, are machine tools with great rigidity and from medium to large dimensions. In their traditional configuration the milling head is... mounted and slides along a portal supported by two upright columns. The milling head travels along the y-axis and moves up and down through the z-axis. The table, on the other hand, travels along the x-axis allowing the loading and machining of large and heavy workpieces. A second configuration, ideal for the machining of very large workpieces, involves the sliding of the two uprights on which the head is housed along the fixed table. In this configuration the strokes of the three positioning axes x, y and z are all on the head, allowing higher speeds and allowing the table to receive higher loads. The gantry machining centres are normally built in multi-axis versions, with additional positioning axes on the head and on the table, allowing the machining of 5 faces of a cube in a single machining cycle. In addition, in the gantry machining centres we can also find another device in addition to the automatic tool changer, which is the automatic head changer. The automatic head changer allows to change the entire milling head and therefore switch to different types of machining within the same work cycle with a consequent enormous saving of time and space. Without this device, in fact, the workpiece would probably require the use of a second machine and the interruption of the work cycle.
Bridge type machining centers, also called double column machining centers, are machine tools with great rigidity and from medium to large dimensions. In their traditional configuration the milling head is mounted and slides along a portal supported by two upright columns. The milling head travels along the y-axis and moves up and down through the z-axis. The table, on the... other hand, travels along the x-axis allowing the loading and machining of large and heavy workpieces. A second configuration, ideal for the machining of very large workpieces, involves the sliding of the two uprights on which the head is housed along the fixed table. In this configuration the strokes of the three positioning axes x, y and z are all on the head, allowing higher speeds and allowing the table to receive higher loads. The gantry machining centres are normally built in multi-axis versions, with additional positioning axes on the head and on the table, allowing the machining of 5 faces of a cube in a single machining cycle. In addition, in the gantry machining centres we can also find another device in addition to the automatic tool changer, which is the automatic head changer. The automatic head changer allows to change the entire milling head and therefore switch to different types of machining within the same work cycle with a consequent enormous saving of time and space. Without this device, in fact, the workpiece would probably require the use of a second machine and the interruption of the work cycle.
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