Process for on-track truing the surface of the head of the...

E - Fixed Constructions – 01 – B

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E01B 31/17 (2006.01) E01B 31/12 (2006.01)

Patent

CA 1039953

ABSTRACT OF THE DISCLOSURE A process and an apparatus for on-track truing of the surface of the head of rails of a railway. A predetermined num- ber of truing tools are oriented according to tangents to the profile of the head and are moved along the generatrices of the surface. The value of at least one of the parameters influenc- ing the metal removing capability of at least one truing tool - such as its bearing pressure, its cut speed its inclination angle and its speed of displacement along the rail - is under the control of a set control value which is preestablished as a function of the desired cutting depth of the tool. There is determined at least one magnitude value representative of the state of the rail head before truing such as the mean amplitude of the undulatory deformation of short wavelength, and/or the amplitude of the undulatory deformations of long wavelength and/or the amplitude of the defects in the profile of the rail head The control value is set so as to obtain the desired cutt- ing depth of the tool and/or to position it, in function of the measured value of the magnitude and of known values correspond- ing to its metal removing cability. The setting of the control value is ajusted according to the results obtained at the end of a rail length corresponding at least to the length taken up by the whole assembly of truing tools used.

267141

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