Title:
BALL SCREW SPLINE ASSEMBLY AND RELATED METHOD
Document Type and Number:
WIPO Patent Application WO/2019/109273
Kind Code:
A1
Abstract:
A ball screw spline assembly comprises: a ball screw spline (500) including a first nut (520) including a first mounting surface (522) adapted to receive a first fastening element (230) for installing the first nut (520) to a housing; a second nut (530) including a second mounting surface (532) adapted to receive a second fastening element (240) for installing the second nut (530) to the housing; and a shaft (510) passing through the first nut (520) and the second nut (530); the housing including a first portion (600) and a second portion (650), wherein the first portion (600) extends in a direction substantially parallel to the shaft (510), and the second portion (650) extends in a direction substantially perpendicular to the shaft (510); a connecting plate (540) coupling the second nut (530) to the first portion (600), wherein the first nut (520) is installed to the second portion (650); wherein the first mounting surface (522) and the second mounting surface (532) are located within a space defined by the first portion (600), the second portion (650) and the connecting plate (540), such that the ball screw spline (500) is integrally installable to the housing. And a method for installing the ball screw spline is also disclosed. The ball screw spline (500) is integrally installable to the housing, and thus there is no need to remove the spline nut from the shaft (510) when installing and maintaining the ball screw spline (500). With the bolts adapted to be received within the housing without protruding from the housing, the robot arm comprising the ball screw spline assembly can be compact since the pulley no longer interferes with the bolts mounted on the spline nut.
Inventors:
XU XIAO (CN)
FENG TAO (CN)
FENG TAO (CN)
Application Number:
PCT/CN2017/114857
Publication Date:
June 13, 2019
Filing Date:
December 06, 2017
Export Citation:
Assignee:
ABB SCHWEIZ AG (CH)
XU XIAO (CN)
FENG TAO (CN)
XU XIAO (CN)
FENG TAO (CN)
International Classes:
B25J9/00
Foreign References:
| CN206326592U | 2017-07-14 | |||
| CN201970315U | 2011-09-14 | |||
| CN105345807A | 2016-02-24 | |||
| CN206455659U | 2017-09-01 | |||
| CN106863272A | 2017-06-20 | |||
| CN202862226U | 2013-04-10 | |||
| CN106272365A | 2017-01-04 | |||
| JP6215000B2 | 2017-10-18 | |||
| EP3208050A1 | 2017-08-23 |
Other References:
See also references of EP 3720662A4
Attorney, Agent or Firm:
KING & WOOD MALLESONS (CN)
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