Accession Number : ADD012898

Title :   Method for Bonding a Thin Sheet to a Rigid Body.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Doherty,Robert J ; Allan,Joseph J

Report Date : 15 Jul 1986

Pagination or Media Count : 5

Abstract : A rigid body is oriented with the surface upwards to receive a thin metal sheet on top. An annular spreader bar is placed on top of the thin metal sheet. A group of rigid C shaped clamping fixtures are provided which are configured so the rigid body is placed on the lower legs of the fixtures and the upper legs extend over the spreader bar. The upper leg of the clamping fixtures are conformed to receive and hold a plurality of pneumatic cylinders. Extensible ends of the pnuematic cylinders contact and push against the upper surface of the spreader bar which compress the thin sheet against the rigid body. The pneumatic cylinders are all connected to a common pressure source. The surfaces to be bonded are prepared in a suitable manner. The bonding agent is applied to the prepared surfaces. The spreader bar, clamping fixtures, and pneumatic cylinders are put in place. Heat is applied in a suitable manner for curing of the bonding agent if heat is needed to cure the adhesive. The proper amount of pressure between the rigid body and the metal sheet is provided by regulating the output pressure of the common pressure source for the pneumatic cylinders. This insures equal pressure on the thin metal sheet and uniform thickness of the bonding agent.

Descriptors :   *PATENTS, *METALS, *SHEETS, *RINGS, *BEARINGS, *ADHESIVE BONDING, *PROPELLER HUBS, BONDING, LEGS, OUTPUT, PRESSURE, CYLINDRICAL BODIES, PNEUMATIC EQUIPMENT, THINNESS, THICKNESS, PRESSURE, SOURCES, RIGIDITY, DETENTS, COMPRESSION, HEAT TREATMENT, CURING, LEAK DETECTORS, SOLID LUBRICANTS, PLANAR STRUCTURES, FAILURE, SURFACES

Subject Categories : Aircraft
      Mfg & Industrial Eng & Control of Product Sys

Distribution Statement : APPROVED FOR PUBLIC RELEASE