2025 年 91 巻 10 号 p. 1009-1016
Since the invention of modern machine tools, their fundamental design has not changed. This paper proposes a novel machine tool design that enables the machining of a workpiece simultaneously with multiple spindles, for drastically enhancing the machining efficiency. Using parallel linear axes, each of which is regulated in synchronization with a rotary table, 2.5-dimensional tool path machining becomes possible. In this new configuration, the risk of collision among the spindles is entirely eliminated. This paper presents a tool path generation algorithm so that the multiple spindles are simultaneously engaged in the machining of contour-parallel paths. To prove the competence of the novel multi-spindle machine tool configuration, a prototype has been designed and constructed. Finally, to evaluate the higher efficiency of this configuration, a machining test with multiple spindles is conducted.
