SU1391771A1 - Die for making thickenings - Google Patents

Abstract

The invention relates to the processing of metals by pressure and can be used in aircraft manufacturing, shipbuilding and other fields of engineering. The purpose of the invention is the expansion of technological capabilities by ensuring the formation of bulges of increased size. The stamp comprises a lower plate (s) 1 on which the upper plate is installed, consisting of two parts. In the upper plate there is a cavity 4 with longitudinal grooves 5, into which the counterpressure element is installed - plate (П) 6. П 6 with one side facing the upper surface of НИ 1, and the other - to the heating element 7. A punch is mounted between the upper plate and NP 1 precipitation. When heated, the workpiece 10 is heated P 6, after heating. blanks are upset by the punch. Its material, located between NP 1 and P 6, is deformed and accumulates into a thickening. P 6 prevents loss of stability of the workpiece 10. At that, P 6 will be elastically deformed, and its ends will slightly move in grooves 5. Depending on the material of P 6, its dimensions and heating temperature, backpressure forces can be adjusted and thickening of different sizes can be obtained. 3 il. . (L 00 with A Fig, 1

Description

1139177

The invention relates to the processing of metals by addition, namely to sheet metal stamping, and can be used to form thickening on g sheets.

The purpose of the invention is the expansion of technological capabilities by ensuring the formation of bulges of increased size, 10

FIG. 1 shows a stamp in the initial state; FIG. 2 is the same, section A-A in FIG. one; in fig. 3 - stamp at the time of thickening.

The stamp comprises a bottom plate 1 on which a top plate is installed, consisting of two parts 2 and 3.

The upper plate has a cavity D,

in which longitudinal grooves are made

5 parallel to the base of the top plate. A plate is installed in the slots 5

6 with the ability to move along them and with a gap relative to the bottom plate, equal to the thickness of the workpiece. Plate 6 with one side facing the upper surface of the bottom plate, and the other - to the heating element 7, for example a heating element installed in the holder 8, which is fixed on the top plate. Between the upper and lower plates mounted punch precipitation

9 with the ability to move along them.

The stamp works as follows

The sheet stock 10 is mounted on the bottom plate 1 and fixed by the top plate with a force P,... Previously, parts 2 and 3 of the upper plate are connected using, for example, screws. In the longitudinal grooves 5, a plate 6 is installed, TENs 7 are installed in the holder 8. The plate 6 is pressed with the bottom side against the upper part of the sheet blank. With the help of heating elements 7, the sheet blank is heated under the plate 6 and the plate itself to a predetermined temperature. The temperature is chosen so as to create the most favorable stress-strain state of the workpiece material. After heating, the sheet billet is made in the end by the punch 9 with the force P. In this case, the material of the billet, located between the bottom plate and the plate, is deformed and accumulated in the form of a thickening. Plate 6 prevents the loss of stability of the workpiece, ensuring

supporting the workpiece, while the plate 6 is elastically deformed, and its ends slightly move in the grooves 5. Depending on the material of the plate 6, its dimensions and heating temperature, it is possible to create different back pressure forces and, accordingly, different deflection of the plate. Depending on this, different in height and thickness of thickening. At the end of the process, the top plate rises, plate 6 takes the same position due to the elastic forces, the sheet blank is removed with thickening, the next blank is set and the process is repeated.

The stamp, according to FIG. 1-3, was tested when receiving a thickening on a sheet blank, or another 3 mm, 100x60 mm blank material from AMGB material. The sheet was heated to 420-450 ° C. The precipitation was carried out on a hydraulic testing machine. The deformation force was 1.5-2.0 tons. As a result, a thickening was obtained on the edge of the sheet blank at a length of 60 mm with parameters: S 6.1–6.8 mm and h 24–30 mm, i.e. S / So 2.1-2.2 at h / Sp 8-10, which is 1.5-2.0 times more than is possible in the prototype, 5 ° is the initial thickness, S is the thickness of the thickening, h is the height of the thickening.

Claims (1)

Invention Formula A punch for forming bulges on the edges of the sheets, comprising upper and lower plates, mounted between the plates for moving the punch of precipitates along with them, as well as a counter-pressure element and a heating element, characterized in that, in order to expand the technological possibilities by ensuring the formation of thickened bulges, the top plate consists of two parts, in one of which there is a cavity with longitudinal grooves, and the backpressure element is made in the form of a plate, with the ends installed in odolnye grooves cavity parallel to its base is movable thereon and with a gap relative to the bottom plate, the heating element is disposed within a housing secured to the upper plate and the plate with one side facing the upper surface of the bottom plate, and the other towards the heating element. /// Editor V.Kovtun Compiled by N. Chernilevska Tehred L. Serdyukova Proofreader M. Demchik Order 18А6 / 1А Circulation 709 VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., d. A / 5 l- / u ///////////. FIG. 2 U // 7 / L Fig.Z Subscription