The invention relates to the related technical field of turning
machine tools, in particular to a turning
machine tool and a turning method for overflow valve manufacturing, the turning
machine tool comprises a cabinet body and an
assembly seat fixed in the cabinet body, and further comprises a transverse moving seat movably arranged on the
assembly seat, a cutter is installed on the transverse moving seat, the transverse moving seat can be driven by a linear driving module arranged on the
assembly seat, and the linear driving module is used for driving the assembly seat to move. The assembling base drives the tool to move towards the workpiece, a chuck used for clamping and fixing the workpiece is arranged on the assembling base, and a rotating shaft fixed to the chuck is further rotationally installed on the assembling base. The
cutting fluid pump is provided with the conduction control mechanism, on the basis that the power of the
cutting fluid pump is synchronously increased, the conduction control mechanism can increase the conduction amount of the fluid outlet, it is guaranteed that the total amount of
cutting fluid is sufficient, and the situation that when only the pump power is increased, although the pressure is high, the area of the fluid outlet is not changed, the flow amplification is limited, and cutting heat increased at the square level at the high rotating speed cannot be absorbed is prevented; and hole walls are easy to deform due to
temperature difference.