In order to solve the problems occurred in the preparation of wax pattern for complex hollow turbine blade

such as unstable localization of ceramic core

easy breakage of ceramic core and incompleteness of wax pattern surface

a new locating technology with the wax patch based on the optimal locating algorithm was presented. By establishing the locating error transmission function

the criterion for judging the locating completeness of the ceramic core has been founded. Additionally

with the optimal locating algorithm

the dimensional position of the locating points of the ceramic core was calculated accurately. After that

a new location mode has been designed based on was pattern

Finally

a group of wax pattern have been produced for wall-thickness measurement. The result shows that the method presented can solve the problems mentioned above effectively and provide some theoretical guidance for controlling the accuracy of wall thickness hollow turbine blade wax pattern.