RU2016103351A

RU2016103351A - METHOD FOR EXTRACTION OF THIN-WALL PRODUCTS OF COMPLEX FORM

Info

Publication number: RU2016103351A
Application number: RU2016103351A
Authority: RU
Inventors: Виктор Васильевич Леонтьев; Юрий Павлович Катаев; Алексей Александрович Лизунов
Original assignee: Виктор Васильевич Леонтьев; Юрий Павлович Катаев; Алексей Александрович Лизунов
Priority date: 2016-02-02
Filing date: 2016-02-02
Publication date: 2016-07-20
Also published as: RU2620219C2

Abstract

1. Способ вытяжки тонкостенных изделий сложной формы, включающий многопереходную давильную обработку плоской тонколистовой заготовки, зафиксированной на профильной оправке, соответствующей сложной форме тонкостенного изделия, продольным перемещением давильной головки, выполненной с радиусом сопряжения рабочих поверхностей, и радиальным смещением - относительно оправки, отличающийся тем, что для многопереходной давильной обработки плоской тонколистовой заготовки используют технологические пластины с габаритами, по крайней мере, не меньшими размеров заготовки, и толщиной, зависимой от пластичности материала заготовки и радиуса сопряжения рабочих поверхностей давильной головки, выполненных с отверстиями, последними пластины устанавливают на профильной оправке пакетом высотой, равной глубине вытяжки изделия, и давильную обработку плоской тонколистовой заготовки ведут вытяжкой на оправке с образованием на периферии заготовки плоского кругового участка путем разглаживания на технологических пластинах образующихся гофр радиальными смещениями давильной головки от периферии заготовки к центру и обратно, с прерыванием процесса вытяжки заготовки между переходами для удаления из пакета очередной технологической пластины и выполнения следующего перехода вытяжки заготовки, для чего первым переходом получают частично деформированную заготовку с заданной глубиной вытяжки и плоским периферийным участком, а каждым последующим переходом вытяжку заготовки выполняют на глубину, равную толщине ранее удаленной технологической пластины, с разглаживанием гофров на периферийном участке.2. Способ по п. 1, отличающ1. The method of drawing thin-walled products of complex shape, including multi-jaw pressure processing of a flat sheet blank fixed on a profile mandrel corresponding to the complex shape of a thin-walled product, longitudinal movement of the pressure head made with a radius of mating of the working surfaces, and radial displacement relative to the mandrel, characterized in that for multi-jaw pressing processing of a flat sheet blank, technological plates with dimensions of at least not smaller than the workpiece, and with a thickness depending on the plasticity of the workpiece material and the radius of mating of the working surfaces of the press head made with holes, the last plates are installed on the profile mandrel with a package of a height equal to the depth of the product’s draw, and the flat processing of the flat sheet work is carried out by drawing on the mandrel with the formation on the periphery of the workpiece of a flat circular section by smoothing on the technological plates of the corrugations formed by the radial displacements of the pressure head from the periphery of the workpiece to the center and vice versa, with the interruption of the process of drawing the workpiece between the transitions to remove another technological plate from the package and performing the next transition of the workpiece extraction, for which the partially deformed workpiece with a given drawing depth and a flat peripheral section, and with each subsequent transition are obtained by the first transition the workpiece is drawn to a depth equal to the thickness of the previously removed technological plate with smoothing the corrugations in the peripheral section. 2. The method of claim 1, wherein

Claims

1. The method of drawing thin-walled products of complex shape, including multi-jaw pressure processing of a flat sheet blank fixed on a profile mandrel corresponding to the complex shape of a thin-walled product, longitudinal movement of the pressure head made with a radius of mating of the working surfaces, and radial displacement relative to the mandrel, characterized in that for multi-jaw pressing processing of a flat sheet blank, technological plates with dimensions of at least not smaller than the workpiece, and with a thickness depending on the plasticity of the workpiece material and the radius of mating of the working surfaces of the press head made with holes, the last plates are installed on the profile mandrel with a package of a height equal to the depth of the product’s draw, and the flat processing of the flat sheet work is carried out by drawing on the mandrel with the formation on the periphery of the workpiece of a flat circular section by smoothing on the technological plates of the corrugations formed by the radial displacements of the pressure head from the periphery of the workpiece to the center and vice versa, with the interruption of the process of drawing the workpiece between the transitions to remove another technological plate from the package and performing the next transition of the workpiece extraction, for which the partially deformed workpiece with a given drawing depth and a flat peripheral section, and with each subsequent transition are obtained by the first transition the extraction of the workpiece is performed to a depth equal to the thickness of the previously removed technological plate, with smoothing the corrugations in the peripheral section.

2. The method according to p. 1, characterized in that the holes in the technological plates correspond to the cross-sectional profile of the mandrel at the level of the transition of the workpiece hood.

3. The method according to p. 1, characterized in that the pressure treatment of a flat sheet blank is performed with a vibro-impact tool.