INJECTION MOLD FOR A WAX MODEL OF A TURBINE BLADE HAVING AN ISOSTATIC CORE HOLDER

摘要

The invention relates to an injection mold for producing a model of a turbine engine blade, comprising a top surface that folds onto a bottom surface, both surfaces having long rods for supporting a core (2) for generating cooling cavities inside the blade, wherein said long rods of the bottom surface are to contact a first surface (12) of the airfoil at bearing points (A51 to A53), and said long rods of the top surface are to contact a second surface of said airfoil at clamping points. The injection mold is characterized in that it also comprises at least one short rod (TF51 to TF53, TF55 to TF57) extending from one of the surfaces of the mold and pointing towards a false point (F51 to F53, F55 to F57) located on one of the surfaces (12b, 22b) of the airfoil (2b), the length of the short rod being shorter than the distance between the surface of the mold and the surface of the blade at the aforementioned false point, and the difference between said length and said distance being equal to the tolerance in relation to the positioning of the false point in the event of a deformation of the core.