Cylindrical product cylinder wall normal hole machining device

The utility model belongs to the technical field of machining, and particularly relates to a cylindrical product cylinder wall normal hole machining device. The device comprises a base, a front end cover, a rear end cover, a positioning column, an index plate and a cylindrical pin, the base is horizontally arranged; the front end cover and the rear end cover are detachably, vertically and oppositely connected to the two ends of the upper surface of the base. The center position of the inner side face of the front end cover is detachably connected with a positioning column. The index plate is sleeved on a positioning column on the front end cover, and the index plate is in positioning connection with the positioning column through a cylindrical pin. The device can be used for quickly clamping on a common three-axis milling machine and accurately machining a normal hole of a product at any angle of 360 degrees in the circumferential direction, is convenient to use, simple in structure and high in repeated posit