Double Column VMC

Chevalier’s FVM double column VMC has a rigid and stable structure base on oversized columns, extra-wide spacing of boxways on a slanted Y axis and close symmetrical Z-axis design.

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Chevalier’s FVM double column VMC has a rigid and stable structure base on oversized columns, extra-wide spacing of boxways on a slanted Y axis and close symmetrical Z-axis design. All models feature 30-hp spindle motors with a 2-speed gearbox and no-backlash INA precision roller bearings.
 
According to the company, the series is perfect for lean, repeatable mass production of large and heavy workpieces for aerospace, power generation, wind turbine, oil exploration, heavy machinery, die-mold industry and heavy construction. The VMCs have a large capacity table size, starting at 86.6" × 70.8" and are available as large as 280" × 118", with a table load of as much as 48,000 lbs.
 
The XY axis runs with a Class 3 high-precision, double-nut, pre-tensioned ballscrew. The coolant circulation in the 80-mm large ballscrews eliminates thermal building and ballscrew deformation and helps maintain their high-positioning accuracy and repeatability, the company says. The 50-taper, cartridge-type, air-purge, 6,000 rpm with 30-hp (with an option of 35 hp) spindle is driven by a 2-speed gearbox with low speed for extra-high torque output during heavy cutting. It generates a maximum torque of 609 Nm. The tool set capacity is a 40-arm type with an optional 60-arm type.
 
The FVM-DC Series also uses many premier components inside the machine, including a German INA two-directional roller-bearing, which support the axes to eliminate the backlash totally. This enables stronger bearing support compared with the single ball-type thrust bearing.
 
The chip channel, one on each side of X-axis table, is one piece with the casting and comes with individual chip augers. A high-volume, flood coolant washdown recalculates from a high-capacity coolant tank.