US 10,870,227 B2
Manufacturing apparatus for robot arm
Kazutaka Nakayama, Yamanashi (JP)
Assigned to FANUC CORPORATION, Yamanashi (JP)
Filed by FANUC CORPORATION, Yamanashi (JP)
Filed on Oct. 3, 2019, as Appl. No. 16/591,860.
Claims priority of application No. 2018-223867 (JP), filed on Nov. 29, 2018.
Prior Publication US 2020/0171720 A1, Jun. 4, 2020
Int. Cl. B29C 45/14 (2006.01); B22D 19/00 (2006.01); B25J 18/00 (2006.01)
CPC B29C 45/14065 (2013.01) [B22D 19/00 (2013.01); B25J 18/00 (2013.01); B29C 45/14336 (2013.01); B29C 45/14598 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A manufacturing apparatus for a robot arm including an arm main body with a long tubular or columnar shape having a uniform lateral cross-section, and attachment interface parts that are fixed to both sides of the arm main body and are attached to another member, the manufacturing apparatus comprising:
a pair of fixing parts supporting at least a part of each of the attachment interface parts and each end of the arm main body in a positioned state and each including a space at least near a joint part between each of the attachment interface parts and the arm main body;
a slide mechanism capable of adjusting a distance between the two fixing parts along a longitudinal axis of the arm main body by moving at least one of the fixing parts; and
a material injection part that injects a molten material into at least a part of the space so as to integrally joint each of the attachment interface parts to each end of the arm main body,
wherein a material filling space, which is filled with the molten material, of the space has:
at least part of a first end proximate the arm main body, the first end having a cross sectional shape conforming to a cross sectional shape of the arm main body; and
at least a part of a second end proximate one of the attachment interface parts, the second end having a shape conforming to an outer peripheral surface of one of the attachment interface parts, and
wherein the material filling space has a hollow between at least the part of the first end and at least the part of the second end.