To firmly combine a thin plate member with a tip part of a hollow shaft member by plastic processing.

An axial protrusion 13 having a ringlike drawdown part 13a is installed on one side face of a plate member A, and a tip part of a hollow axial member B is engaged with the axial protrusion 13 of the plate member A. A core axis 15 is inserted into the hollow axial member B and a squeeze spinning processing is performed to a periphery of the hollow axial member B with a spinning roll 16 while pressurizing the hollow axial member B to the plate member side. While reducing the diameter of the hollow axial member B, the tip part of the member B is caulked for combining with the axial protrusion 13 drawdown part of the plate member A.