Inner hole boring machine for precision machining

The utility model discloses an inner hole boring machine for precision machining. The inner hole boring machine comprises a shell and an adjusting mechanism. A partition plate is arranged at the left end in the shell, a rotating column is rotationally connected into a rotating hole in the upper end of the partition plate through a bearing, a rectangular plate is slidably connected into a rectangular sliding groove in the middle of the rotating column, the front end of the rectangular plate penetrates through the interior of the shell and is provided with a mounting disc, and a boring cutter is mounted on the outer arc surface of the mounting disc; the adjusting mechanism is arranged in the shell, the middle of the adjusting mechanism is fixedly connected with the rear end of the rectangular plate, a PLC is arranged on the right side face of the shell, and the input end of the PLC is electrically connected to an external power source. And meanwhile, the time required for position movement of the boring cutter