Abstract
A new machine tool has been developed to produce parts with non-circular cross sections, and especially parts with large radius changes in the workpiece cross sectional profile. Using the machine tool, a workpiece fixed with a spindle chuck is set between two milling cutters so that the workpiece can be machined using both milling cutters simultaneously from opposite sides of the workpiece. The machining time can be cut by half using two cutting tools on one workpiece. It is necessary to control each cutting tool position for cutting directions separately in order to apply the machining method to non-circular workpieces. The machine tool is powered by two linear motor systems. A feature of the linear motor system is that the two linear motors are mounted on a linear rail and can be controlled separately by a machine tool controller. Machining tests are conducted using the developed machine tool system to demonstrate the advantages of the method for non-circular workpieces.
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