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Posted on Jan 9, 2021
The core of the spindle of a CNC double column machining center consists of the distribution of all strength. The closer it gets to the machine's mass, the harder it gets. The spindle core cannot be nearer than one-half of the Y-axis journey on a C-frame machine tool so the table pushes up towards the column.
The CNC double column machining center is one of today's most impressive forms of machine tools. This specialized machining center is designed primarily for simultaneous multi-axis workpiece machining for many high-precision industries. When production needs for larger parts with the same accuracy emerged, the CNC double column machining center was branched from traditional milling machines around 40 years ago. Let us take a look at why CNC double column machining centers are extremely powerful machine tools that are especially sought for by the automobile and aerospace industries.
The C design architecture was the industry standard where all instruments were treated and the tolerances for the parts were more forgiving. As CNC came into being, dimensional tolerances were tightened and industries requested quicker spindle velocities to cope with harder-to-machine Alloys. So why do businesses switch to CNC double column machining centers from the C structure design? Here are the reasons why:
The big concern with the C design is that the rigidity of today's output demands cannot be sustained. As the machine's work component has an even structure, it is unavoidable that during high-speed or extreme cutting operations, the cutting tool is deflated. Not only does this make it more difficult to keep strict tolerances, but it also induces premature acceleration of a number of the components of the system.
Even a mild deflection will lead to scratching, rework, and missing deliveries for many parts needing tolerances in the micron scale. They all eat away from the viability of the producer.
About 30 years ago, the makers of power tools wanted to make the machines even more efficient and they created CNC double column machining centers. Advances in industrial technologies made it both appropriate and practical to provide a better design. With the use of two columns and not a single column, the rigidity and reliability of the machine tool will dramatically be improved to decrease friction, deflect the tool and thereby retain tolerances while allowing the machine to work with the highest spindle speeds.
The architecture of the CNC double column machining center allows for more thermal deformation control. Laboratory experiments practically prove, 10 times as thermally stable as a C-type design machining center, that the bridge design is. Therefore, the heat only affects the bridge geometry linearly because of the dual column design. This ensures that the system expands in a straight line so that the adjustments can be electronically compensated. On the other hand, the thermal expansion occurs in a cube regardless of the rotation of both X and Y axes of one column machine. This means that the precise compensation for certain temperature fluctuations is impossible.
The core of the spindle of a CNC double column machining center consists of the distribution of all strength. The closer it gets to the machine's mass, the harder it gets. The spindle core cannot be nearer than one-half of the Y-axis journey on a C-frame machine tool so the table pushes up towards the column. You have a maximum Y-axis, when you switch between columns, in a double-column configuration. This leads to a 75% shorter "C force loop" between the spindle center and the system mass.
Since the construction of a C column is cheaper to produce and can minimize the first CNC sales price, the purchase of a CNC double column machining center would be compensated in two major ways over time. Firstly, the construction of the CNC double column machining center decreases friction such that vital parts are less weary so that the machine tool performs well for a long time. Secondly, lower deflection means more direct cutting, more frequent spindle speeds, and efficient output. The CNC double column machining centers are available in various sizes and configurations from the inexpensive entrance series to the most appropriate machines. Notice that modern CNC double column machining centers, whatever your use, are very rigid and durable tools that fit your needs.
:: Read More: What Is a Bridge Milling Machine?
Many businesses have over the years developed equipment that has been designed to maximize work envelopes. Wide and strong, the basic configuration improves the CNC's potential for large workpiece machining with CNC double column machining centers and a cross rail sitting on the columns supporting the spindle head and one axis over the table. The weight of the component rests on a single axis. A large motor or mechanical frame is no longer required to accommodate the component weight, minimize expenditures and improve the affordability of the large envelope device.
High material removal rates are necessary for larger pieces machined on the CNC double column machining center. If the machine is static and stable, the need can be met using large tools such as CAT 50 or HSK 100. The weight of the machines was rising, and spindles with several gears and low potential rpm available were high. Mechanical design advances were required to retain a less massive rigidity and to improve the removal rate of materials with higher RPM spindling.
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