Gear cutting machine

The invention discloses a gear cutting machine, which comprises a machine body (1), a pillar (2), a toolbox (3), a sliding table (4), a rotary table (5) and a swing mechanism (6), wherein the pillar (2) is movably arranged on the machine body (1) along a first horizontal direction; the sliding table (4) is movably arranged on the machine body (1) along a second horizontal direction; the toolbox (3) is movably arranged on the pillar (2) along the vertical direction; the rotary table (5) is rotatablely arranged on the sliding table (4); the rotary table (5) is driven by the swing mechanism (6) to rotate; and a driving device (6-1) of the swing mechanism (6) is arranged on the sliding table (4). The gear cutting machine is simple in structure, stable and reliable in performance, high in efficiency, small in occupied area and easy in protection and chip removal. Moreover, workpieces and tools can be conveniently assembled and disassembled.