Enveloping worm shaving method of hard tooth surface enveloping worm involute gear pair

Abstract

The invention discloses an enveloping worm shaving method of a hard tooth surface enveloping worm involute gear pair, belonging to the finish machining method of an involute enveloping toroid worm. The technical scheme comprises an enveloping worm 1, a worm axis 4, an involute helical tooth cylindrical gear 2 and an involute gear-shaped shaving cutter 3 having same geometric parameter and gear axis 5 with the involute helical gear 2, wherein the worm axis 4 and the gear axis 5 are fixed and vertically interlaced with the center distance a; the involute gear-shaped shaving cutter 3 moves for s along the axis relative to the enveloping worm 1 and rotates along the gear axis 5 so as to move as two degrees of freedom to shave the enveloping worm 1. The enveloping worm shaving method of a hard tooth surface enveloping worm involute gear pair of the invention solves the problem of precision finishing of the hard tooth surface enveloping worm involute gear pair and provides a new finishing method for the hard tooth surface enveloping worm involute gear pair.

Description

technical field [0001] The invention relates to a tooth shaving method of a toroidal worm with a hard tooth surface toroidal worm involute gear pair, which belongs to the finishing method of an involute enveloping toroidal worm. The obtained hard-tooth surface involute enveloping toroidal worm and the hard-tooth surface involute helical gear are meshed and driven to form a hard-tooth surface torus worm involute gear pair. Background technique [0002] In order to improve the bearing capacity of the toroidal worm drive and reduce the cost, a hard tooth surface torus worm involute gear pair is used. There are three processing methods for the tooth surface of the toroidal worm involute gear pair with hard tooth surface. The first is to use the involute cutter teeth to envelop the two-degree-of-freedom motion. This method was developed by Liu Zongfu in 1995. "Machinery" Volume 22, Issue 5, "Development of Involute Helical Gear Enveloping Worm Pair", this method mills a tin bron...

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Problems solved by technology

There are three processing methods for the tooth surface of the toroidal worm involute gear pair with hard tooth surface. The first is to use the involute cutter teeth to envelop the two-degree-of-freedom motion. This method was developed by Liu Zongfu in 1995. "Machinery" Volume 22, Issue 5, "Development of Involute Helical Gear Enveloping Worm Pair", this method mills a tin bronze toroidal worm, and only the matching involute helical gear is hard toothed surface, so it can only be used for precision indexing worm drive, and for the processed toroidal worm and involute gear need to be paired and run-in

[0003] The second is the method of using the involute gear-shaped grinding wheel to grind the hard-toothed toroidal worm according to the single-degree-of-freedom motion. of toroidal involute wormmating with involute helical gear", because the relative speed of the worm and the involute gear grinding wheel is low, the diamond particles on the grinding wheel are easy to fall off, and the effect is poor

The cross-sectional profile of the grinding wheel shaft is not an involute, so the manufacturing of the grinding wheel itself is troublesome, and the movement of the machine tool is complicated, and the production efficiency is low, thus increasing the manufacturing cost and making it difficult to obtain process applications

[0004] The third method is to use the two-degree-of-freedom motion of the involute gear-shaped honing wheel relative to the worm to honed the toroidal worm. "Machining method", this honing method can obtain high precision, but it requires higher precision for rough machining of the helical surface of the worm

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