ALIGNMENT MECHANISM FOR JOINT MADE OF MATERIAL WITH DIFFERENT THERMAL EXPANSION CHARACTERISTIC

摘要

PROBLEM TO BE SOLVED: To provide an alignment mechanism for a joint for connecting a shaft member of different thermal expansion coefficient with a plate member having a hole part showing no excessive thermal stress at the joint due to difference in thermal expansion coefficients and no deterioration in alignment degree between the shaft member and the plate member.;SOLUTION: An alignment mechanism 10 has a configuration in which a shaft member 11 and a plate member 12 have a different thermal expansion characteristic, the shaft member is fitted to a hole 12a of the plate member, at least each of a pair of counterbore holes 11a is oppositely arranged in each of a first direction crossing at a right angle with a longitudinal direction of the shaft member and a second direction crossing at a right angle with the first direction, each of a pair of alignment members 13 is inserted into at least a pair of counterbore holes, the shaft member side end surfaces 13a of the first and second alignment members are abutted against bottom surfaces of the counterbore holes arranged at the shaft member, the side end surfaces of the plate members of the first and second alignment members are abutted against the inner surfaces of the holes in the plate members, and the thermal expansion coefficients of the first and second alignment members in their longitudinal directions are the same as those of the plate members.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2017,JPO&INPIT