Robot arm and robot

Patent metadata

Field	Value
Publication number	US-2018290293-A1
Application number	US-201815904800-A
Country	US
Kind code	A1
Filing date	Feb 26, 2018
Priority date	Apr 10, 2017
Publication date	Oct 11, 2018
Grant date	—

Abstract

Provided is a robot arm that is provided with mounting interface portions at both ends of a long resin arm body. Each of the mounting interface portions is provided with: a connecting section that is formed of resin and that is connected to the arm body; and a metal member that is embedded in the resin, which forms the connecting section, and that forms a mounting surface. The metal member is provided with a through-hole that penetrates therethrough in the plate-thickness direction and through which a mounting screw passes, and is embedded in the resin while exposing the mounting surface and a seating surface, for the mounting screw, around the through-hole, the seating surface being located at the opposite side from the mounting surface.

First claim

1 . A robot arm comprising mounting interface portions at both ends of a long resin arm body,
the mounting interface portions comprising: a connecting section that is formed of resin and that is connected to the arm body; and a metal member that is embedded in the resin that forms the connecting section, and that forms a mounting surface; and the metal member is provided with a through-hole that penetrates therethrough in the plate-thickness direction and through which a mounting screw passes, and is embedded in the resin while exposing the mounting surface and a seating surface, for the mounting screw, around the through-hole, the seating surface being located at opposite side from the mounting surface.

2 . A robot arm according to claim 1 , wherein the metal member is a flat-plate member having a plurality of the through-holes.

3 . A robot arm according to claim 1 ,
wherein the arm body is formed into a hollow pipe shape having an inner hole; the connecting section is formed to be hollow having a central hole into which the inner hole opens; and the metal member is disposed at a position so as to surround the central hole.

4 . A robot arm according to claim 1 , wherein, in the mounting interface portion, the mounting surface of the metal member is disposed parallel to the longitudinal axis of the arm body.

5 . A robot arm according to claim 1 , wherein the mounting surfaces of the two mounting interface portions are disposed in a same plane or disposed parallel to each other.

6 . A robot arm according to claim 3 , wherein the connecting section is provided with an opening that makes the space inside the connecting section open to the outside at opposite side from the central hole.

7 . A robot arm according to claim 6 , further comprising a lid member that openably closes the opening.

8 . A robot arm according to claim 1 , wherein the metal member is embedded, through insert molding, in the resin that forms the connecting section.

9 . A robot arm according to claim 1 , wherein the mounting surface of the metal member is disposed so as to protrude from the resin that forms the connecting section.

10 . A robot arm according to claim 1 ,
wherein a plurality of the through-holes are provided in the mounting interface portion at intervals in the circumferential direction; and at least one of the through-holes disposed proximate to the arm body is closed by the resin that forms the connecting section, at the opposite side from the mounting surface.

11 . A robot comprising a robot arm according to claim 1 .

Assignees

• Fanuc Corp

Inventors

• Nakayama Kazutaka
• Abe Kenichirou
• Morioka Masahiro

Classifications

• B25J18/00 Primary

  Arms · CPC title

• B25J9/0024 Primary

  Wrist motors at rear part of the upper arm · CPC title

• B25J9/06

  characterised by multi-articulated arms · CPC title

• H01L2924/0002

  Electricity · mapped topic

• B25J9/0012 Primary

  making use of synthetic construction materials, e.g. plastics, composites · CPC title