Hole series machining method and device for engine cylinder block

The invention provides a hole series machining method and device for an engine cylinder block, and is applied to the field of numerical control program machining. The method comprises the steps that an engine type corresponding to a to-be-machined cylinder block blank is obtained; determining a target numerical control program corresponding to the engine type according to the obtained engine type; and based on the target numerical control program, the hole series of the to-be-machined air cylinder body blank is machined, and a target air cylinder body is obtained. As the target numerical control program corresponding to the engine type is constructed in advance according to the part combination group needing to be assembled according to the engine type, hole series machining of different engine types does not share the same set of numerical control program any more, all hole series are machined, the corresponding numerical control program is used according to the engine type, and the machining efficiency is i