METHOD FOR PRODUCING LARGE-SIZED TOOLING FROM COMPOSITION MATERIAL Russian patent published in 2019 - IPC B29C33/38 

FIELD: manufacturing technology.

SUBSTANCE: invention relates to a method for manufacturing large-sized tooling from a composite material. Technical result is achieved by a method of manufacturing large-sized tooling from a composite material, which includes the manufacture of the first negative core, consisting in spraying on the working surface of the coating of the first negative core with allowance for machining; curing the coating of the first negative core and its mechanical treatment to the size of the nominal surface; drawing on the nominal surface of the adhesive composition; making a positive core on the first negative core, consisting in spraying a positive core onto the nominal surface of the first negative core; curing a positive core coating; applying to the coating of a positive core a layer of a composite material, its molding and curing; removing a positive core from the first negative core; drawing on the nominal surface of a positive core anti-adhesive composition, then making a positive cored of the second negative core, consisting in spraying a negative core onto the nominal surface of the second block of the second negative core; curing the coating of the second negative core; drawing on the coating of the second negative core of the array of composite material, its molding and curing; removal of the second negative core from a positive core and its use as a tooling, first negative core is made by layer-by-layer synthesis with a wall of the working surface of equal thickness δ and reinforcing it with a power kit. Positive core made with a layer of composite material of equal thickness δ1 and supporting it with a power kit of the same composite material. Second negative core is made with an array of composite material of equal thickness. δ2 and supporting it with a power kit of the same composite material. Thickness δ1 of layer of positive core composite material and thickness δ2 of arrays of composite material of the second negative core are equal (δ1 = δ2). In the manufacture of a positive core and a second negative core use the same composite material.

EFFECT: technical result is to reduce the complexity of manufacturing large-sized tooling with geometric shapes of high accuracy.

1 cl, 7 dwg