PLANAR DOUBLE-ENVELOPING TOROIDAL WORM GEAR SET AND MANUFACTURING METHOD THEREFOR

WIPO Patent Application WO/2022/242684

A1

The present invention relates to a planar double-enveloping toroidal worm gear set and a manufacturing method therefor. The planar double-enveloping toroidal worm gear set at least comprises: a worm (100) and a gear (200) having rotation axes that are non-coplanar. The worm (100) at least comprises a left half-section worm (110) and a right half-section worm (120) that are coaxially sleeved. The worm (100) is manufactured by the following method: in a machining process, a worm first rotation direction (500) in which the left half-section worm (110) rotates about a worm rotation axis (140) is opposite to a worm second rotation direction (510) in which the right half-section worm (120) rotates around the worm rotation axis (140). Compared with common cylindrical worm drive, the toroidal worm drive can simultaneously contact more worm gear teeth to achieve multi-tooth contact and double-line contact. An included angle between a contact line and the relative sliding speed direction is close to 90°, so that a lubricating oil film is easily formed. The comprehensive curvature radius between meshed tooth surfaces is large, and the bearing capacity is stronger.

JPS6275150	BUFFER APPARATUS IN MOTOR SPEED REDUCER FOR DRIVING CAR ACCESSORIES
JP2522669	[Name of invention] Actuator for variable intake valve

LIU QINGYOU (CN)
DENG XINGQIAO (CN)
WANG FAN (CN)
FEI CHUNXIA (CN)

PCT/CN2022/093579

November 24, 2022

May 18, 2022

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UNIV CHENGDU TECHNOLOGY (CN)

F16H1/16; B23P15/14; F16H55/28

CN113175501A	2021-07-27
CN113175498A	2021-07-27
CN102734389A	2012-10-17
CN202628946U	2012-12-26
CN102430817A	2012-05-02
GB1541694A	1979-03-07

ZHIXIN & PARTNERS LAW FIRM LTD. (CN)

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