Patent ID: 11931837
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A ring assembly method for assembling a ring in a ring groove formed on an outer peripheral surface of a cylindrical member, the ring assembly method comprising:
setting the ring at a small diameter part of a ring temporary holding jig, the ring temporary holding jig including the small diameter part, a tapered part, and a large diameter part in this order, an outer diameter of the small diameter part being smaller than an outer diameter of the large diameter part, an outer peripheral surface of the tapered part being formed to connect an outer peripheral surface of the small diameter part to an outer peripheral surface of the large diameter part, and the outer diameter of the large diameter part being larger than an outer diameter of the cylindrical member;
moving the ring to the large diameter part from the small diameter part through the tapered part by using a first ring press member including a cylindrical shape with a leading end part elastically deformable in a radial direction and including a first length in an axial direction, so that the ring temporary holding jig temporarily holds the ring;
attaching the ring temporary holding jig for temporarily holding the ring to the cylindrical member;
transferring the ring from the large diameter part of the ring temporary holding jig to the outer peripheral surface of the cylindrical member by using a second ring press member, the second ring press member including a cylindrical shape and a second length shorter than the first length in the axial direction; and
sliding the ring on the outer peripheral surface of the cylindrical member and then assembling the ring in the ring groove by using the second ring press member.