US 11,998,972 B2
Method and device for producing shrink-fitted member
Fumitaka Takeuchi, Kasugai (JP); Shuhei Kuno, Komaki (JP); and Seiya Sawada, Komaki (JP)
Assigned to NGK INSULATORS, LTD., Nagoya (JP)
Filed by NGK Insulators, Ltd., Nagoya (JP)
Filed on Jan. 9, 2023, as Appl. No. 18/151,642.
Claims priority of application No. 2022-050609 (JP), filed on Mar. 25, 2022.
Prior Publication US 2023/0302523 A1, Sep. 28, 2023
Int. Cl. B21D 53/06 (2006.01); F28F 21/04 (2006.01); F28F 21/08 (2006.01)
CPC B21D 53/06 (2013.01) [F28F 21/04 (2013.01); F28F 21/081 (2013.01); F28F 2275/00 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for producing a shrink-fitted member by arranging a hollow type pillar shaped ceramic body inside a metal pipe and shrink-fitting them, the hollow type pillar shaped ceramic body comprising: an outer peripheral surface and an inner peripheral surface in a direction substantially parallel to an axial direction; and a first end face and a second end face in a direction substantially perpendicular to the axial direction,
wherein the method comprises arranging the pillar shaped ceramic body inside the metal pipe while gripping the pillar shaped ceramic body using a chuck mechanism, the chuck mechanism comprising: gripping portions capable of gripping at least a part of the inner peripheral surface of the pillar shaped ceramic body; and protruded portions each having a surface capable of being in contact with at least a part of the first end face of the pillar shaped ceramic body.