Modified double-toroid secondary enveloping toroid worm gear pair and manufacturing method thereof

A toroidal worm, secondary enveloping technology, applied in the worm, worm gear, gear transmission and other directions, can solve the problems of complex manufacturing process, can not use the full length of the worm, etc., achieves fast moving speed, is conducive to bearing and heat dissipation, The effect of simple manufacturing process
CN102389996BInactive Publication Date: 2013-04-17WUHAN UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WUHAN UNIV OF SCI & TECH
Publication Date
2013-04-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a modified double-toroid secondary enveloping toroid worm gear pair and a manufacturing method thereof. The technical scheme of the manufacturing method disclosed by the invention comprises the following steps of: grinding and spreading a toroid worm gear blank (1) by a double-toroid disc-shaped grinding wheel (2), wherein the process center distance is ad=a+delta a, and the process transmission ratio is i1d=i12+delta i; and adopting pure center distance profiling or adopting comprehensive profiling, determining profiling parameter ad and i1d by a trial method, calculating a worm gear engaging-out end reflecting line, and ensuring that the worm gear engaging-out end reflecting line can completely enter a first conjugate subarea of a worm wheel tooth surface. The cutting gear of a worm wheel is same as the relative standard transmission, only that a generative face of an applied toroid hob is consistent with a spiral surface of the modified worm gear. Accordingto the modified double-toroid secondary enveloping toroid worm gear pair disclosed by the invention, the worm wheel tooth surface does not exist a secondary contact area and can utilize the full length of a worm gear, a worm gear engaging-in end of the worm gear can keep the certain double-line contact length, and the manufacturing process is simpler and more flexible; and the modified double-toroid secondary enveloping toroid worm gear pair can also naturally inherit the advantages of standard double-toroid sedondary enveloping transmission.
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Description

technical field

[0001] The invention belongs to the technical field of secondary enveloping toroidal worm drive devices. In particular, it relates to a modified double-toroidal double-enveloping toroidal worm pair and a manufacturing method thereof. Background technique

[0002] The patented technology of "a double-toroidal double-enveloping toroidal worm drive" (ZL 200920084461.6) discloses a standard toroidal worm drive without modification. surface, which can bring a series of excellent meshing characteristics, but part of the contact line intersects in the middle of the worm gear tooth surface, forming a so-called secondary contact area, which is a part of the worm gear tooth surface that is prone to failure, which restricts the full play of the transmission pair's bearing capacity and Further improve.

[0003] The patented technology of "an angle-modified double-toroidal double-toroidal double-enveloping toroidal worm pair and its manufacturing method" (CN200910273347...

Claims

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