You Ji VMT Series – Vertical Mill-Turn Centers

The You Ji VMT Vertical Mill /Turn Center Series combines 3-axis 5-face machining with vertical turning capabilities. The machines provide 5-sided or 4+1 axis milling and turning of medium size workpieces, producing complete parts in a single set-up. A full C-axis allows for 4-axis simultaneous milling, making the machines ideal for aerospace and energy industry applications.

Built for stability and precision, the machine’s vertical column and base are heavily ribbed Meehanite® castings, minimizing thermal distortion and effectively dampening vibration. The X, Y, and Z axes feature fully enclosed box guideways with hand-scraped mating surfaces, Turcite-B coatings, and forced lubrication for long-lasting accuracy and smooth motion.

High-torque servo motors directly drive large 2″ diameter Class-3 precision ballscrews on all three axes, eliminating the need for belts or gears. The design incorporates a fixed turning spindle with a 3-axis moving column, enhancing operator accessibility and optimizing chip evacuation.

The B-axis milling head is equipped with a robust Hirth coupling for secure positional locking. A 90° index comes standard for vertical and horizontal milling operations, while optional 5° and 1° indexing configurations are available for increased versatility.

As with all You Ji CNC machine tools, customized models are available upon request.