Turbine blade ceramic core soft core support machining method

The invention discloses a turbine blade ceramic core soft core support machining method, and aims at solving the technical problem that the conventional methods are bad in fitting point consistency between soft core supports and ceramic cores. The technical scheme is that the method comprises the following steps: determining a soft core support point at a blade profile center position at 1/3 of the distance between a blade body and a blade tip of a ceramic core; uniformly arranging two soft core support points on a blade profile curve at 2/3 of the distance between the blade body and the blade tip of the ceramic core; making a cylinder with a diameter of 4mm by taking a soft core support position point as the center and taking a Y-axis direction as an axis; clipping the column by utilizing the curved surface of the ceramic core and the curved surface of a wax mould as boundaries, wherein a geometric body between the two curved surfaces is a soft core support geometric model; and carrying out machining by adop