SU1258566A2 - Combined-action die - Google Patents

Description

The invention relates to the processing of metatsov pressure, in particular to die tooling for processing sheet material, and is an improvement of the device according to the author. St. f 1074632.

The purpose of the invention is to increase the quality of the products by providing a uniform wall thickness of the flanged section and expanding the range of manufactured products by increasing the height of the resulting bead.

FIG. Figure 1 shows the working area of the punch before the beginning of the formation of the aperture; 2 shows the working area of the punch at the moment of the simultaneous completion of the formation of the aperture and the forming; FIG. 3 - node 1 in FIG. 2, in FIG. working area of the stamp after the formation of the bead.

The stamp contains, in the upper part, a crimping punch 1, a presser 2, spring-loaded buffer 3, and in the lower part, an crimping matrix 4, an ejector 5, spring-loaded with buffer 6. On the ejector 5, a tool for forming an aperture with a working one is attached to it. a part in the form of an acute-angled rib 7 with apex 8, having a height of not more than Tolvdany of the stamped 1 material and a closed contour equidistant to the contour of the working hole of the matrix 4,

The top of the rib 7 is located in the same plane and with the mirror 9 of the REED 4 due to the equal height of the ejector 5 and the rib 7 in size, from the mirror 9 to the upper end of the buffer b.

The device works as follows

.When the upper part of the stamp moves downward, the presser 2 presses the workpiece 10, and the punch 1 presses the workpiece 10 against the top 8 of the acute-angled rib 7 located on you58566 2

the pusher 5, simultaneously forms the opening for flanging and forming section 11, while the buffer 6 is not compressed, since 5 as its force is greater than the force of formation of the hole.

As a result of the simultaneous formation of the flanging hole and forming, the section 11 of the 10 O billet receives simultaneous stretching until the complete separation of waste 12 in the zones: below the flat end part of the punch 1, under the radius edge of the punch 1 and above the radius 5 edge of the flange matrix 4. to the fact that the neck is more uniform in thickness and greater height.

Waste 12 in the formation of the hole20

The separation is completely or partially separated from the material of the workpiece 10, it depends on the height of the rib h.

Upon further movement of the top of the punch, buffer 6 is compressed,

waste 12 is separated if it was not completely separated at the previous stage of processing, and flange 13 is flanged.

In the known device, the zone located under the flat end part of the punch receives less stretching than in the proposed one, because part of the material is first removed. From the workpiece, the corresponding technological hole, equal to the diameter of the tooth, the metal flows more freely. As a result, the wall of the product has an uneven thickness in height and,

as a consequence of this, the shortened board. .

The implementation of the invention will ensure greater uniformity of the wall thickness, increase its

izdut and thereby improve the quality of products and expand their range ..

eleven

/

"/

f4 -: - 44.

FIG. g. one

eight

25G

Compiled by V.Dorozhkina Editor O. Bugir Tehred A. Kravchuk Proofreader I. Erdeyi

Order 5064/12 Circulation 783 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5.

Production and printing company, Uzhgorod, st. Project, 4

Claims (1)

STAMP OF COMBINED ACTION for punching and flanging by ed. St. No. 1074632, characterized in that, in order to improve the quality of the products by ensuring uniform wall thickness of the flanged section and expanding technological capabilities by increasing the height of the flanged section, the total height of the ejector and the tool for forming the hole is made equal to the distance from the upper end of the ejector buffer to the mirror flanging matrix. ί