Milltronics USA, Inc. VM5020EZ VERTICAL MACHINING CENTER

Technical Description

This vertical machining center features BIG-PLUS® ISO No. 40 spindle technology, a dual contact system that simultaneously engages both taper and spindle face for significantly enhanced rigidity and performance. The BIG-PLUS system delivers improved surface finish, dimensional accuracy, extended tool life, and elimination of Z-axial movement at high speeds compared to conventional steep taper designs. The spindle accommodates 24 tools, providing versatile tooling capability for diverse machining operations. The machine provides three axes of motion with generous travel ranges: 50 inches on the X-axis, 20 inches on both Y and Z-axes, enabling substantial workpiece accommodation and complex part geometry. The rapid traverse rates reach 945 ipm across all three axes, delivering efficient non-cutting movement and reducing overall cycle times. This combination of extended travel capacity and rapid positioning significantly enhances productivity for high-volume production runs and diverse part configurations. The BIG-PLUS spindle system represents an advancement in tooling interface technology, utilizing elastic deformation principles to achieve simultaneous dual contact, which increases the effective contact diameter from the gauge line to the flange edge. This larger contact diameter substantially reduces deflection during cutting operations, resulting in superior bore roundness, improved runout accuracy at the tool nose, and prevention of fretting corrosion from heavy cutting loads. The strict dimensional and tolerance control inherent to licensed BIG-PLUS systems ensures consistent performance and interchangeability with certified tool holders.