Railroad tracks milling method and apparatus
AssigneeDr. Techn. E. Linsinger & Co Gesellschaft m.b.H.
InventorJosef Pomikacsek
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Abstract
For chip-removing machining of the contact surfaces of rails 1, a stationary system is used which to attain high machining output as well as good surface quality uses a rotating, internally toothed milling ring 2, the flight circle of which generates the normally elliptical contact surface profile of the rail 1, in a position inclined with respect to the longitudinal axis of the rail. To avoid reproducing the ridged defects 18 of the contact surface, at least one conical supporting roller 17 is used in the machining region, its elliptical contact arc being designed with a substantially longer radius of curvature than the amplitude length of the ridges.
Claims9
A method of working of the contact surfaces of rails of railroad tracks railroad tracks by milling, wherein the rails are moved in the longitudinal direction past a stationary milling unit and are guided by laterally disposed rollers, using the milling unit and a milling tool having a rotating ring with cutter elements disposed on the inside thereof, comprising aligning the cutter flight circle of the milling tool with respect to the rail such that one diameter of the circle of the milling tool coincides with an axis of symmetry of a rail profile, and extending the flight circle plane of the cutter obliquely with respect to the longitudinal axis of the rail in such a manner that the projection of the cutter flight circle into the rail profile plane containing the rail profile axis of symmetry produces an ellipse, the course of the ellipse corresponding to the quasi-elliptical contact surface profile.
A milling apparatus for working contact surfaces of rails of of railroad tracks by milling comprising:
- a milling unit having a rotating milling ring with cutter elements disposed on the inside thereof;
- the cutter flight circle plane of the milling ring being inclined in the direction of the longitudinal axis of the rail in such a manner that the projected reproduction of the cutter flight circle in the cross-sectional plane of the rail produces the respective contact surface profile.
Dependencies are inferred from the claim text.