SU1333449A1 - Die for drawing and trimming - Google Patents

Description

punch attached punch 2. On the bottom plate 8 a container 10 with an elastic crimping matrix 11 is installed and, in conjunction with it, a stretching matrix 9, the Stamp. contains a puller 3 with a trimming matrix 4 and split knives 5, spring-loaded relative to the top plate 1 and vertically movably mounted on the bottom plate 8 on the guide rods 13. Pools 2 has

one

The invention relates to the processing of metals by pressure and relates to tooling for sheet metal forming.

The aim of the invention is to improve the quality of the cut surface on the finished product.

FIG. 1 shows a stamp for drawing and trimming in the lowest position, section; Fig, 2 - stamp in the process of removal of the finished part from the punch section.

A stamp of the upper plate 1, on which the exhaust punch 2, the spring-loaded pick-up puller 3 with the cut-off matrix 4 and the waste separation unit in the form of cutting knives 5, installed in the press-pick-up box 3 at a distance from the cutting edge of the cut-off matrix 4, are installed - superior height-finished part 6.

On the exhaust punch 2, a cutting edge 7 is provided at a step of a larger diameter, spaced from its end at a distance equal to the height of the finished part 6.

A drawdown matrix 9 is installed on the bottom plate 8, under which the container 10 with the crimping matrix 11 of the part is installed, made in the form of a cup made of an elastic material, more than the height of the finished part 6 and with a hole in the bottom for the ejector rod 12.

The puller clamp 3 is connected to the bottom plate 8 by means of guide bars 13 and 13 with stops 14 at the ends for limiting the stroke of the puller clamp 3. The stroke of the puller clamp 3 exceeds the height of the finished part 6.

a stepped form, a step of a larger diameter is drawn out and has a cutting edge 7. During the working stroke, the matrix 9 is first stretched, then crimped in the matrix 11. During the return stroke, the waste 15 compressed along the cutting edge 7 of the punch 2 is cut off on the trimming matrix 4, accumulates in its cavity and is divided by split knives 5. 1 e.p. f-ly, 2 ill.

The stamp works as follows. The blank is stowed on a matrix. When lowering the top plate 1, the pressing puller 3 presses the workpiece to the matrix 9. The ejection punch 2 is lowered into the hole of the matrix 9 and the part 6 is pulled, while the ejector 12 lowers.

At the end of the stretching process, the top plate 1 continues to move and the punch 2 with part 6 is lowered into the crimping matrix t1, which presses the part 6 along the punch 2, bending the edge of the part 6 around the cutting edge 7.

When the upper plate 1 moves upward, the crimping matrix 11 assumes its original shape, part 6

with a punch 2 comes out of the die 9 and lifts the press-puller 3 up to the stops 14 of the guide bars g 15, after which the edge of the part 6 is cut between the cutting edge 7 of the punch 2

and the cutting edge of the trimmer 4.

Upon further movement of the top plate 1 upward, the Puller 3 removes the finished part 6 from the punch 2.

The waste 15 remains in the pressure remover 3 and accumulates in the form of an annular column.

The punch 2 pushes the waste onto the knives 5, as a result of which the waste is cut, displaced onto the upper surface of the clamp-removal 3 and removed.

The proposed stamp cuts the edge of the part between two cutting edges, which leads to an increase in the quality of the cut surface of the part.

For rmula ieo

1333449

rete n i

it is provided with a container with an elastic crimping matrix installed under the exhaust matrix and coaxially with it, as well as covering a punch, spring-loaded to the plate and connected to the matrix by means of a vertical-movable clamp-removable end guide and removed from a combo with a cutoff of the working end face mounted on it, the height of the prepared die, the reversed cutting edge of the product, as well as the extrusion die, the ejector and the separation part of the waste die to the exhaust die 2. The stamp according to claim 1 is different. A punch for stretching and trimming, containing an exhaust punch fixed on a plate, of a step shape with a cutting edge located at a stage of a larger diameter having a

Yes, characterized in that, in order to improve the quality of the cut surface on the finished product.

Sch and and the fact that the node separation of waste placed in the clamp-puller and made in the form of split knives.

1333449

Sch and and the fact that the node separation of waste placed in the clamp-puller and made in the form of split knives.

FIG. 2

Compiled by O. Matveeva Editor N. Gorvat Tekhred L. Serdyukova Proofreader L. Beskid

Order 3904/11 Circulation 730. .Subscription VNIISH State Committee of the USSR

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

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

Claims (2)

Claim 1. A stamp for extracting and trimming, containing a step-shaped exhaust punch fixed to the plate with a cutting edge located on the step of the larger barrel end and that working product, and the ejector yes, so that, in order to improve the quality of the cut surface by the finished product, of a diameter having a ready-made exhaust matrix also separated from the aforementioned height, and a separation unit for the waste one, it is equipped with a container with an elastic crimping matrix coaxial under the exhaust die and coaxially with it yuschim punch, a spring-loaded to the plate and connected to the matrix by means of guide rods vertically-movable clamp-puller with mounted therein edged matrix facing cutting edge on the exhaust matrix " 2. Stamp pop. 1, characterized in that the separation unit waste is placed in the clip-puller and made in the form of split knives. FIG. 2