公开(公告)号：US20190078681A1

公开(公告)日：2019-03-14

申请号：US15699133

申请日：2017-09-08

Applicant: HIWIN TECHNOLOGIES CORP.

Inventor： WEI-CHOU LIN ,  CHENG-MING SU ,  CHENG-LUNG WANG ,  PO-JUNG HUANG

IPC: F16H57/04 ,  F16H25/22

Abstract: A lubricatable ball screw device includes a ball screw shaft, a ball nut slidably sleeved on the ball screw shaft and having oil guide holes, a linear bearing unit mounted between the ball screw shaft and the ball nut, a bearing ring rotatably sleeved on the ball nut and having an oil supplying hole, a positioning portion disposed between the bearing ring and the ball nut, and an oil passage corresponding to the oil supplying hole. The oil supplying hole, the oil passage, an oil storage space of the positioning portion and any one of the oil guide holes cooperatively form a continuous oil path.

公开(公告)号：US20170097082A1

公开(公告)日：2017-04-06

申请号：US14876474

申请日：2015-10-06

Applicant: HIWIN TECHNOLOGIES CORP.

Inventor： CHENG-MING SU ,  JIAN-AN LIN

IPC: F16H49/00 ,  F16H57/04

CPC classification number: F16H49/001 ,  F16H57/042 ,  F16H57/0427 ,  F16H57/043 ,  F16H57/0471

Abstract: A harmonic drive featuring helix-facilitated lubrication includes a circular spline, a flexspline, a wave generator, and an agitating member. The flexspline meshes with the circular spline. The wave generator has a bearing installed within the flexspline, an elliptic wheel positioned in the bearing, and a shaft coupling connecting the elliptic wheel. The agitating member is located in a lubricant-holding space between the wave generator and the flexspline, and has a rotatory part and blade parts formed about a rotatory part. The rotatory part of the agitating member is connected to the shaft coupling of the wave generator, so that when the agitating member is driven by the shaft coupling, the helical blade parts agitate lubricant to perform convection, thereby better lubricating the bearing of the wave generator.