METHOD OF MAKING TOOLING FOR MOULDING ARTICLES FROM POLYMER COMPOSITE MATERIALS Russian patent published in 2025 - IPC B29C33/38 B05D5/08 B29C70/44 

FIELD: machine building.

SUBSTANCE: invention relates to methods of making large-size tooling for moulding large-sized parts of complex geometrical shape from polymer composite materials (PCM) for aircraft and space equipment. Disclosed is a method of making tooling for moulding articles from polymer composite materials, comprising making a mould by placing several layers of carbon reinforcing fibre on the surface of the master model, said fibre is impregnated with low-viscosity epoxy binder by vacuum infusion, pre-cured, post-cured at high temperature, cooled, and jointed to the mould. Before placing the carbon fibres on the surface of the master model, an anti-adhesion layer is applied, which passes onto the surface of the mould in the zone of its contact with the master model during pre-curing, then after placing the carbon fibres on the surface of the master model, their impregnation with a binder and preliminary hardening of the mould, it is connected to the support structure, after which the mould with the support structure is removed from the master model and filling local zones of airing the mould with low-viscosity epoxy binder used for impregnating fibres, then performing post-curing of the mould with subsequent bringing of the working surface of the mould to specified dimensions in the filling zones.

EFFECT: reduced labour intensity of tooling manufacturing due to absence of additional stiffness elements on the mould and increased accuracy of working surface due to the possibility of eliminating local deviations using the same binder with which the mould is impregnated, which ensures its strong bond with the mould material at the post-curing stage.

1 cl, 4 dwg, 2 ex