Cutting tool for drilling and chamfering steel rail and machining technology thereof

Abstract

The invention discloses a cutting tool for drilling and chamfering a steel rail and a machining technology thereof. The cutting tool comprises a cutting tool body, wherein the cutting tool body comprises a first cutting edge, a second cutting edge and a third cutting edge; the first cutting edge is used for drilling the steel rail; the second cutting edge and the third cutting edge are used for chamfering the steel rail; the first cutting edge is positioned at the outermost end of the cutting tool body; the second cutting edge and the third cutting edge are arranged oppositely. The machining technology comprises the following steps of installing the cutting tool on a drilling machine, and positioning and fixing the to-be-machined steel rail; feeding the cutting tool, and drilling the steel rail through the first cutting edge; continuously feeding the cutting tool, and chamfering one side of the steel rail through the third cutting edge; retracting the cutting tool, and chamfering the other side of the steel rail along a rounding path through the second cutting edge; retracting the cutting tool out of the steel rail. According to the cutting tool for drilling and chamfering the steel rail and the machining technology thereof, the machining processes, such as the drilling and two-face chamfering, on the steel rail can be realized, machined chamfers are uniform, the phenomenon of stress concentration is effectively eliminated, the workload of workers is relieved, and the machining efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of rail processing, in particular to a tool for drilling and chamfering a rail and a processing technology thereof. Background technique [0002] In the drilling process of rail parts, chamfering the drilled holes is one of the essential processes. If the drilled hole is not chamfered, stress concentration will occur in the drilled hole, and the rail is prone to cracks at the stress concentration point during load, resulting in rail fracture. [0003] At present, most of the tools are used to drill holes first, and then manually use chamfering milling cutters to chamfer the rails. The disadvantage of manual chamfering is that the chamfering is not uniform, and the stress concentration phenomenon in the bolt holes cannot be well eliminated. The product Consistency is difficult to guarantee; and it takes a long time, the labor intensity of the operator is high, and the production efficiency is low. Contents...

AI Technical Summary

Problems solved by technology

If the drilled hole is not chamfered, stress concentration will occur in the drilled hole, and the rail is prone to cracks at the stress concentration point under load, resulting in rail fracture

[0003] At present, most of the tools are used to drill holes first, and then manually use chamfering milling cutters to chamfer the rails. The disadvantage of manual chamfering is that the chamfering is not uniform, and the stress concentration phenomenon in the bolt holes cannot be well eliminated. The product Consistency is difficult to guarantee; and it takes a long time, the labor intensity of the operator is high, and the production efficiency is low

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