Process for bonding main rotor blades from parts having differen

Details Process for bonding main rotor blades from parts having differen Process for bonding main rotor blades from parts having differen

1978-09-01

1980-09-23

Crane, Daniel C.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

291568P, 156 91, 156222, 1563069, B23P 1504

Patent

active

042234298

ABSTRACT:
A process for bonding together into a composite structure parts having different coefficients of thermal expansion by use of an adhesive which cures at a curing temperature different from the use temperature at which the structure is to be used, including the steps of applying the adhesive in an uncured state to the parts, then affixing the parts together rigidly at the use temperature to form the composite structure prior to during the adhesive, then curing the adhesive at the curing temperature while keeping the parts affixed together and simultaneously permitting the composite structure to change shape in accordance with the different coefficients of thermal expansion of the parts, the latter step being accomplished by holding the composite structure in a fixture which includes clamping plates which prevent twisting and buckling of the composite structure as its temperature is changed and in which the clamping plates are mounted so as to permit them to shift position to accommodate the bowing of the composite structure resulting from the different expansion coefficients of the parts which are affixed together.

REFERENCES:
patent: 2965530 (1960-12-01), Stamm et al.
patent: 3004607 (1961-10-01), Linnabery et al.

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