Patent ID: 11878380
Assignee: AOYAMA SEISAKUSHO CO., LTD.
Field: Machine tools (Mechanical engineering)
Classification: CPC B  F | IPC B

Claim 3:
4. A method for fixing a nut to an inner surface of a pipe member, the method comprising:
using the device configured to fix the nut to the inner surface of the pipe member according to claim 1, holding the nut in the nut holder, and inserting the nut and the nut holder into the pipe member;
driving the rotation shaft from the outside of the pipe member to rotate the elliptical or oval cam;
advancing the nut holder toward the inner surface of the pipe member to bring the nut into close contact with the inner surface of the pipe member;
driving a die disposed at an outer peripheral position of the pipe member into the pipe member; and
fixing the nut to the inner surface of the pipe member.