Manufacturing method for shaft provided with function elements uses plastic expansion of hollow shaft by internal fluidic pressure and elastic expansion of function elements fitted to shaft

摘要

The manufacturing method has function elements (3,4) provided with a central bore (5) threaded with play onto a hollow shaft (2), with use of an internal fluidic pressure for plastic expansion of the shaft and elastic expansion of the function elements, so that a tight pressure fitting between each function element and the shaft is obtained when the pressure is released. The hollow shaft is expanded plastically between the function elements to provide spaced expansion regions (7,8,9), with a segmented counter-holder (10) supporting the shaft between the latter.