Vertical Boring Mill Work
One of the largest machine tools manufactured today is the vertical boring mill (VBM) or vertical turning lathe (VTL). It is mainly used for turning, facing or boring large cylindrical workpieces. The machine works much like a horizontal lathe stood on one end. Applications for a vertical boring mill are: machining turbine casings, ring gear blanks, locomotive tires, water turbine runners, flanges for large pipe and machine tool tables. Two vertical uprights are mounted to the back of the diameter of the table, which bolsters a cross rail. The cross rail can be maneuvered up and down on the support columns in order to accommodate various workpieces.
The vertical boring mill at Withers Tool, Die and Manufacturing has a 96” diameter table and clearance under the rail of 90”. Parts up to 105” can be turned on this machine. It is also equipped with a tool touch off probe for calibrating tooling on the machine and a Reneshaw probe for measuring parts on the machine.