Method for producing model mold core blank, model mold core, and precision mold, and casting method for producing casting component having void structure

摘要

The present invention relates to a method of manufacturing a model mold core blank (1) in which a ceramic blank (10) is fixed to a processing holder (50).While the fixed part exists. In the CNC manufacturing process, a lost core (12) is produced from a ceramic blank based on a 3D model, the processing holder is fixed in an operating CNC machine, and a model blank (20) is produced by casting a model material around the lost core.This forms the basis of the method for producing the model mold core (2) of the present invention, and the external shape of the lost model (21) from the model blank and / or model blank based on the 3D model in the second CNC fabrication process (22) is produced, and the fixing portion is present in this state, and the processing holder is fixed to the working CNC machine.The present invention also relates to a method of manufacturing a precision mold (80) and a casting method in which a casting part (100) having a hollow cavity structure (101) is formed by a precision mold.Diagram