Method for machining tooth profile of circular arc end tooth

Abstract

The invention discloses a method for machining a tooth profile of a circular arc end tooth. End-toothed disc blank is machined into the circular arc end tooth by adopting the modes of a formed cup type grinding wheel cutting and a formed end facially grinding. The machining comprises the following technical conditions: (1), the end-toothed disc blank being a tubular shape, the end face of the blank needing to be machined to a cone shape, an included angle between a conic section and a horizontal line being a gullet obliquity gamma of the tooth profile; (2), machining the tooth profile by using an end-toothed cutting tool, wherein the profile angle of the cutting tool meets the condition of alpha d=2tan-1(tan(a / 2) / cos gamma); and the radius of the grinding wheel meets the condition of RD=Rw; (3), the end-toothed disc blank having the oblique gullet obliquity gamma relative to the end-toothed cutting tool; and (4) in a nodal plane that the end tooth is joggled, the transverse distance between the gyration center of the cutting tool and the gyration center of the end-toothed disc being d1=R1+(R2-R1) / 2; and the vertical distance between the gyration center of the cutting tool and the gyration center of the end-toothed disc being d2=Rw. The method for forming the tooth profile of the circular arc end tooth can ensure a correct circular arc end tooth profile, and provide an available manufacturing method for the circular arc end-toothed disc which is widely used in axial connections of tubular structures.

Description

Technical field [0001] The invention belongs to mechanical parts, especially the field of arc-end tooth profile processing. Background technique [0002] In the driving system of high-power AC transmission locomotives, the axial connection between the hollow transmission shaft and the connecting plate, and the axial connection between the coupling and the driving gear shaft usually adopt the end tooth connection method. The tooth shapes of the end tooth connection mainly include: ten There are three types of square end teeth, straight teeth radial end teeth, and arc end teeth. Under the condition of the same tooth shape parameters, compared with the previous two connection methods, the arc end tooth connection has significantly improved tooth surface contact stress and dedendum bending stress, which improves the reliability of end tooth connection. The arc end tooth connection is suitable for the structure with compact structure, high centering precision and large transmiss...

AI Technical Summary

Problems solved by technology

At present, many materials of the arc-shaped end teeth of the tooth shape described in this application used on railways are still in the research and confidential state, and have not been disclosed to the public. According to the information currently available, no one or unit has applied for a patent in this regard

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