Obtaining precision bore in cardan yoke ring, comprises forming bore of dimension less than the desired calibrated bore dimension using first punching operation, and forming preform of corrugated bore using second punching operation

摘要

The process for obtaining a precision bore in a cardan yoke ring (17), comprises forming a bore of dimension less than the desired calibrated bore dimension using a first punching operation, forming a preform of corrugated bore (11c) using a second punching operation, and polishing the corrugated bore preform so as to calibrate the bore to the desired dimension and the precision. Independent claims are included for: (1) a process for manufacturing a cardan yoke from a metal strip; (2) a tool for obtaining a precision bore in a cardan yoke ring; and (3) a cardan yoke.