METHOD OF VACUUM FORMING SHEET WORKPIECES FROM ORGANIC GLASS Russian patent published in 2024 - IPC B29C51/10 

FIELD: machine building.

SUBSTANCE: invention relates to the field of machine building, in particular to the technique of processing sheet blanks from transparent thermoplastics, in particular, to a method of shaping sheet workpieces from organic glass by vacuum forming and can be used to produce articles for glazing aircraft, helicopters and other devices. Method of vacuum forming sheet workpieces from organic glass includes installation and fixation of sheet workpiece on forming tooling, billet and tooling are heated to moulding temperature with subsequent deformation of workpiece due to creation of vacuum between workpiece and working surface of tooling, cooling of workpiece in deformed state. Heating of workpiece and tooling with hot air is performed through hollow tooling consisting of matrix made of heat-resistant plastic, and housing located in heat chamber. Housing of tooling has holes for supply of hot air inside tooling and its outlet into heat chamber.

EFFECT: invention provides for reduction of labour intensity at manufacturing of tooling and provision of required quality of item at manufacture of items of complex shape with high optical properties.

1 cl, 2 dwg