Five-Axis Hard Milling VMC

Makino (Auburn Hills, MI) offers a 5-axis version of its V33i hard milling vertical machining center, the V33i-5XB, whose platform provides extreme dynamic accuracy for long hours of continuous hard milling, and the new 5-axis capability provides for reduced part setups and extreme accuracy in contoured shapes.

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Makino (Auburn Hills, MI) offers a 5-axis version of its V33i hard milling vertical machining center, the V33i-5XB, whose platform provides extreme dynamic accuracy for long hours of continuous hard milling, and the new 5-axis capability provides for reduced part setups and extreme accuracy in contoured shapes.

The V33i-5XB enables single set-up access to complex multiple-sided parts and five-axis geometries, reducing time and cost of manual labor. The added 5-axis features provide increased accessibility to under-cut areas, oddly positioned features, and complex geometries, with shorter tool lengths and higher spindle speeds. This assures the best tool life and surface finish characteristics.

The
5-axis functionality of the V33i is added via a Makino-designed tilt-trunion table. The tilt-trunion table of the V33i-5XB is a 7.87 inch (200 mm) diameter faceplate. It is capable of handling a 66-pound (30 kg) workpiece with dimensions of up to 9.85 inches in diameter x 12.24 inches tall (250 mm x 311 mm) depending on B and C axes positions.

The travels are designed to provide full coverage of the C axis table in either the zero or 90-degree position. Precise rotary encoders provide 130-degrees of B-axis movement (-20 to +110) and a 360-degree continuous movement on the C-axis. Incremental B- and C-axis indexing can be as finite as 0.0001-degrees.

The V33i platform is designed for
high-speed hard milling in materials at 50+ HRc. Refinements to the spindle result in increased stiffness and rigidity, reducing tool chatter.

The V33i features a shortened spindle that is more stiff and rigid than other vertical machining centers of its size. By decreasing the length of the spindle, the V33i platform is able to operate—vibration-free—over a wider range of spindle RPMs therefore reducing chatter and improving both surface finish and tool life.