METHOD OF MAKING COMPOSITE TOOLING FOR FORMING ARTICLES FROM POLYMER COMPOSITE MATERIALS Russian patent published in 2024 - IPC B29C33/38 

FIELD: various technological processes.

SUBSTANCE: invention relates to production of articles from polymer composite materials and can be used for making tooling for making articles from polymer composite materials. Method includes manufacturing of tooling forming shell repeating geometry of item with technological allowance by laying layers of glass fabric or carbon fabric impregnated with resin for curing, on the front surface of the forming shell of the tooling of the master model, connection of the produced forming shell of the tooling with a support structure consisting of elements rigidly connected to each other, scanning of the surface of the forming shell of the tooling. After fabrication of the shape-generating shell of the tooling, which repeats the geometry of the article with technological allowance, the forming shell of the tooling is partially cured. Then the forming shell of the tooling is installed on the support structure with the screw connections of the forming shell of the tooling with the support structure, each of which by its one part is connected to the corresponding element of the support structure, and on the other part of each of which metal inserts are fixed by means of a screw connection, on which the forming shell of the tooling is installed. Further, each of the metal inserts is connected to the forming shell of the tooling by means of an adhesive joint. After that, performing the final curing of the forming shell of the tool, connected to the support structure, and scanning the front surface of the forming shell of the tool, and the tooling forming shell surface profile is compared with the tooling forming shell surface profile with reference dimensions taking into account the allowable error. In the case when any dimensions of the profile of the surface of the forming shell of the tooling exceed in magnitude the value of the corresponding dimensions of the profile of the surface of the forming shell of the tooling with reference dimensions taking into account the permissible error, adjusting the shape-generating shell surface profile of the tooling by changing the length of the screw connections of the forming shell of the tooling with the support structure, such adjustment is carried out in places, in which the difference in the dimensions of the surface profile of the forming shell of the tooling with the corresponding dimensions of the surface profile of the forming shell of the tooling with reference dimensions taking into account the values of permissible errors is recorded.

EFFECT: reduced requirements to the tooling forming shell surface manufacturing accuracy.

1 cl, 6 dwg