Method for establishing and solving blade margin optimization model under tolerance constraint

The invention relates to a method for establishing and solving a blade margin optimization model under tolerance constraint. The method comprises the following steps of: solving an optimum blade machining model which satisfies a tolerance range in a blank measurement point range; and respectively establishing a corresponding profile tolerance constraint condition and a corresponding margin constraint condition according to a constraint requirement of practical machining, and searching the position of the optimum blade machining model in a profile tolerance and margin constraint range when a margin uniform distribution condition is satisfied by taking a least square distance from measurement points to the blade machining models as an optimization target function. The method provided by the invention focuses on the blade margin optimization problem in the self-adaptive machining; different from the traditional blade machining model search method, the method provided by the invention introduces the profile toler