Multi-Purpose Machining Center With Back Working Device

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The main structures of Willemin-Macodel SA’s 508MT milling and turning machining center are built with ribbed, spheroidal graphite cast iron technology. This is said to enhance high-static and dynamic rigidity. To reduce vibration, an isolation wall separates the product’s structure area from the machining environment. Featuring travels of 17.720" (450 mm) in the X axis, 7.875" (200 mm) in the Y axis and 16.730" (425 mm) in the Z axis, the machine also is equipped with preloaded circular roller bearings and linear guideways.


The 30,000-rpm integrated spindle motor features ceramic hybrid bearings, HSK E-40 taper and peripheral coolant distribution. Designed for machining complex parts, the B axis features angular movement of -15 degrees to +100 degrees. Also featured is a 48-position tool magazine with at least ten positions that can be reserved for indexed tools. Tool-change time is about 1 second, while chip-to-chip time is about 3 seconds.


Mounted on a U-axis with 9.842" (250 mm) of travel, an automatic back working device is an optional feature for milling and turning operations. This unit includes a turret with three mechanically locked positions on which operators can mount a milling/turning 6,000 rpm counter-spindle, tailstock or vice. Other optional features for the machining center include a thread whirling head, a 42,000 rpm spindle with air/oil lubrication, B-axis movement of -45 degrees to +100 degrees and various bar feeders, conveyors and part loading/unloading systems.

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This machine can run for a long time without any operator intervention, and users can machine finished parts from slug stock or cast blanks while achieving the same high productivity as if they were machining from barstock, the company says.