Method for finding center of oblique oil hole of engine cylinder

The invention discloses a method for finding a center of an oblique oil hole of an engine cylinder. The method comprises the steps of: adjusting a crossed point of a drill bit center of a horizontal processing machine tool and a rotating central line of a rotating table as a rotating center; installing the engine cylinder uprightly on the rotating table through a clamp and rotating the rotating table for an angle as same as an oblique angle of the oblique oil hole; drawing a position relationship between the oblique oil hole of the engine and the rotating table after the rotation by using computer software, measuring a distance X1 between the central line of the oblique oil hole and the central line of the drill bit of the machine tool in a horizontal plane by using the software in a computer, and converting the distance X1 to a practical distance X; calculating a distance Y between the center of the oblique oil hole of the engine and the central line of the drill bit of the machine tool in an vertical plane based on the distance between the bottom end of the cylinder and the rotating center of the rotating table in the vertical plane and the drawing of the engine cylinder; enabling the drill bit of the machine tool to move for the distance X in the horizontal plane and move for the distance Y in the vertical plane so as to find the center of the oblique oil hole. The method for finding the center of the oblique oil hole of the engine cylinder can improve production efficiency efficiently and reduce error.