The invention discloses a numerical-control automatic boring
machine tool for a shaft coupler hole. The numerical-control automatic boring
machine tool comprises a rack which is fixedly arranged on asteam
turbine cylinder body, wherein a rotary
assembly, a feeding
assembly, a regulating control part, an
electric control box, a
laser centering apparatus and a control touch screen are arranged on the rack; the rotary
assembly, the feeding assembly, the regulating control part, the
laser centering apparatus and the touch control screen are connected with the
electric control box; the rotary assembly is used for realizing positive rotation or negative rotation of a boring head for boring a shaft coupler bolt hole; the feeding assembly realizes enabling the rotary assembly including the boringhead to advance and retreat towards a shaft coupler; the
laser centering apparatus is used for measuring a coaxiality value of the shaft coupler bolt hole and the boring head, feeding back the valueto the
electric control box, controlling a corresponding button of the control touch screen according to the fed-back value, and realizing horizontal front-rear movement, vertical up-down movement andhorizontal swing-angle movement of the boring head by automatic linkage of the regulating control part. The numerical-control automatic boring
machine tool is used for automatic boring for holes in ashaft coupler of a
steam turbine, and can realize functions of automatically centering, automatically feeding and boring, and controlling the action of the touch control screen.