A reference positioning method and system for forging blank turning of train axle

Abstract

The invention discloses a positioning method for the turning reference of a train axle forging blank and a system of the positioning method. The positioning method for the turning basic reference of the train axle forging blank includes the step of determining the position of a positioning reference hole, wherein the step includes the procedures that a, a line profile sensor is used for measuring and acquiring profile data of the section of the axle blank; b, a three-dimensional profile of the axle blank is fit according to the acquired profile data, so that the central axis of the axle blank is acquired, and the position of the central axis on the section of the axle blank is the position of the positioning reference hole. The rejection rate caused by the inaccurate turning positioning reference of the train axle forging blank is avoided, and the percent of pass of axle machining is improved.

Description

technical field [0001] The invention belongs to the field of processing and detection, and more specifically relates to a method and a system for positioning references in turning processing of forged blanks of train axles. Background technique [0002] The basic processing process of the train axle from the forged blank to the finished axle is heat treatment, sawing the end face, drilling the center hole, turning and so on. Before turning, the center holes must be drilled on both ends of the axle blank as the positioning reference in the entire processing process. The positioning accuracy directly affects whether the axle forging blank can be processed into a finished axle. The forged blank of the train axle is a stepped shaft composed of five cylinders. When drilling, it is clamped and positioned at the two journal cylinder positions of the axle blank. The axle blank is fixed, and the drill bit is drilled in the axial direction as the subsequent turning process. Locate da...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above defects or improvement needs of the prior art, the present invention provides a reference positioning method for the turning processing of the forged blank of the train axle. The contour data is obtained by using the sensor, and then the data is fitted to obtain the position of the reference hole, thereby solving the problem. The existing technology cannot accurately determine the positioning datum of turning processing, cannot avoid subsequent unnecessary processing procedures, and causes technical problems such as waste of working hours

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