IMPELLER OF TORQUE CONVERTER AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide an impeller of a torque converter and its manufacturing method to improve the form accuracy of a blade. SOLUTION: At first a plurality of turbine blades are held in a state of the arrangement, a die 61 comes in contact in with a tub 42b of the turbine blades from the under side. Then, a connected part 43a of a turbine core 43 is mounted from the upper side on a tub 42b mounted on the die 61. The connected part 43a of the tub 42b and the core 43 mounted on the die 61 is struck a punch 62 from the upper side.