SU1323187A2 - Die for making tapered parts - Google Patents

Abstract

The invention relates to the field of metal forming and can be used in the manufacture of conical parts with collar. The purpose of the invention is to improve the quality by preventing the formation of burrs when cutting the flange of the parts. Upon reaching a certain depth of drawing, at which the forming of the bead of the part begins, the punch 23 of the forming of the bead transfers the force to the ring 24, which under the action of this reinforcement and goes down. As a result, an optimal clearance is achieved between the ring 24 and the die 9, which prevents the formation of bumps on the side surface of the part. At the end of the stretching, the die 2, which interacts with the inner cutting edge with the cutting edge of the ring 21, cuts the flange of the part. The workpiece support ring 24 and the bead forming punch 23 are rigidly connected to each other, and the ring flange 21 of the part is fixedly mounted. 2 Il. (L / 4 with 00 00 1H IpuSl

Description

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The invention relates to equipment for the processing of metals by pressure, and relates in particular to tooling.

The purpose of the invention is to improve the quality by preventing the formation of a burr when cutting the flange of the parts.

FIG. 1 shows a longitudinal section (to the left of the axis of symmetry, the initial position is shown, to the right - the final one); in fig. 2 - the detail is ready.

The stamp contains in the upper part a movable plate 1 with a hollow punch-matrix 2 fixed on it with two cutting edges: external and internal, and a puller 3 enclosing it with springs 4. Inside the matrix 2 punch there is a stretch matrix 5, a relief matrix 6, axially spring-loaded disc-shaped springs 7 installed in the cage 8, and the exhaust mat 9 spring-loaded in the axial direction 25 of the lateral conical surface of the component 30

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The disc springs 10 are inserted into the relief matrix 6. A pushing rod 11 with a spring 12, a nut 13 and a lock nut 14 is screwed along the thread.

In the lower part of the punch there is a fixed plate 15 with a cutting matrix 17 fixed on the base 16, a exhaust punch 18, a clamping ring 20 supported on the pushers 19, a flange ring 21 of the flange chipping part and rigidly interconnected by the punch 23 of the bead and billet support ring 24 when drawing. Limiters 25 are inserted into the holes in the ring 24, which enter the holes in the punch 23 of the bead molding.

The stamp works as follows.

A tape or strip (not shown) of the material being stamped is fed to the lower part of the stamp. When lowering the upper part of the stamp, the material being forged is pressed by the puller 3 to the cutting matrix 17. The die-die 2 cuts the workpiece (not shown) along the internal diameter of the die-REED 17. After further downward movement, the workpiece is clamped between the die-die 2 and the pressure ring 20i. The material of the workpiece passes into the gaps between the die 9 and 55 of the ring 24. Before reaching the depth of drawing at which the forming of the bead begins, the punch 23 of the molding

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26, I interact with the protrusion of the matrix 5 of the flange molding and the protrusion of the exhaust matrix 9 and bending the workpiece material three times alternately in different directions: for the first time outside, on the protrusion of the matrix 5 of the flange molding; the second time - from the inside - on the protrusion of the punch 23 forming the collar; the third time, outside, on the protrusion of the exhaust matrix 9.

When the pusher is opened, the pusher 19 and 22 return the pressure ring 20, the punch 23 of the bead molding and the ring 24 to the initial position. Excessive displacement of the punch 23 of the bead forming is prevented by the stops 25. To reliably remove the stamped part 26 from the punch, compressed air must be supplied to the lower part through the holes in the exhaust punch 18.

Since the cut punch 21 is fixed, the gap between it and the punch-die 2 can be uniform, which ensures high quality of the chipping and high durability of the cutting tool.

Claims (1)

Invention Formula A stamp for the manufacture of conical parts according to ed. St. No. 927387, which is characterized by the fact that, in order to improve the quality by the bead transfers the forming force to the ring 24, which under the action of this force is lowered with further drawing down, overcoming the resistance of the pushers 22 supported on the buffer (not shown) of the pushers and providing an optimal gap from the exhaust matrix 9 preventing the formation of bumps. An exhaust punch 18 and a relief matrix 6, closed, form the relief of the bottom part 26. At the end of the stretching, the punch 23 of the bead is formed, resting against the protrusion fixed ring 21, stops, providing a clear forming of the bead, and the punch-matrix 2, interacting with the inner cutting edge with the edge of the ring 21, produces stub flange product. During stretching, the punch 23 of the bead is molded, as well as the ring 22, prevents the formation of bumps on 26, I interact with the protrusion of the matrix 5 of the flange molding and the protrusion of the exhaust matrix 9 and bending the workpiece material three times alternately in different directions: for the first time outside, on the protrusion of the matrix 5 of the flange molding; the second time - from the inside - on the protrusion of the punch 23 forming the collar; the third time, outside, on the protrusion of the exhaust matrix 9. When the pusher is opened, the pusher 19 and 22 return the pressure ring 20, the punch 23 of the bead molding and the ring 24 to the initial position. Excessive displacement of the punch 23 of the bead forming is prevented by the stops 25. To reliably remove the stamped part 26 from the punch, compressed air must be supplied to the lower part through the holes in the exhaust punch 18. Since the cut punch 21 is fixed, the gap between it and the punch-die 2 can be uniform, which ensures high quality of the chipping and high durability of the cutting tool. Invention Formula A stamp for the manufacture of conical parts according to ed. St. No. 927387, which is characterized by the fact that, in order to improve the quality by preventing the formation of a burr with but on a stationary plate, and the ring of the flange of the parts, the ring of support for the workpiece is rigidly connected to the wheel (1 trench of the part is rigidly fixed by the punch of the shoulder collet. Compiled by V, Muslinov Editor L. Pchelinska Tehred A. Kravchuk Order 2898/10. Circulation 732 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushak nab. 4/5 Production and printing company, Uzhgorod, st. Design,. four / Phie2 Proofreader S. Cherni