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

Claim 0:
1. An asymmetric to symmetric rail forging press, comprising:
a roller table (209) having one translational axis, the roller table being adapted to receive a railroad rail (210) and translate a railroad rail fore and aft along the one translational axis;
an induction heater (208) adapted to receive an end portion of a railroad rail, the induction heater being laterally movable between a working position in line with a railroad rail, and a home position not in line with the railroad rail;
a first forging station in line with the roller table (209) and adapted to receive a railroad rail therefrom, the first forging station comprising a first pair of opposing horizontal hydraulic cylinders (206a, 206b) having horizontal strokes and driving a first set of horizontal forging dies (219), and a first top hydraulic cylinder (211) having a vertical stroke, the first top hydraulic cylinder being aligned to vertically impinge on the first set of horizontal forging dies during a horizontal forging operation, and the first forging station further including two clamps spaced apart along the length of a railroad rail and adapted to fix the position of a railroad rail during a forging operation;
a second forging station in line with the roller table (209) and adapted to receive a railroad rail from the first forging station, the second forging station comprising, a second pair of opposing horizontal hydraulic cylinders (207a, 207b) having horizontal strokes and driving a second set of horizontal forging dies (218), and a second top hydraulic cylinder (201) having a vertical stroke and driving a top die (323), and the second forging station further including a clamp adapted to receive an end of a railroad rail and fix the position of a railroad rail during a forging operation; and
the top die (323) being linearly translatable between two working positions corresponding to a first portion (323a) of the top die and a second portion (323b) of the top die, wherein the first portion (323a) of the top die includes a lateral step (423) running the length of the first portion (323a), and wherein the second portion (323b) of the top die is flat, omitting the lateral step (423).