Patent ID: 11925966
Assignee: nan
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 4:
5. A process for asymmetric to symmetric rail forging comprising the steps of:
mounting a rail to a roller table in line with a first forging station, the roller table being adapted to drive the rail along one translational axis;
positioning an induction heater between the roller table and the first forging station;
driving the rail into inductive communication with the induction heater;
inductively heating the rail to a predetermined forging temperature;
driving the rail to a first forging station;
clamping the rail at ends of a working section of the rail;
pressing a first set of horizontal forging dies into a head portion of the rail and into a first section of the web portion of the rail;
translationally driving a set of add-on dies to a position stacked vertically on the first set of horizontal dies;
pressing the first set of horizontal forging dies and the add-on dies into the head portion of the rail, the first section of the web portion of the rail, and a second section of the web portion of the rail;
driving the rail to a second forging station;
clamping the rail at three points including an end of the rail, a middle portion of the rail and an unworked portion of the rail;
pressing a second set of horizontal forging dies into the head portion and the web portion;
pressing a first portion of a top die, from a first position, into a foot of the rail;
translationally driving the top die from the first position to a second position; and
pressing a second portion of the top die into the foot of the rail.