SU1502150A1 - Arrangement for sheet forming by applying shock waves - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular, to the impulse processing of metals and can be used in devices for sheet punching, as well as for performing correcting and finishing work. The purpose of the invention is to increase the impact energy. The device comprises a barrel 1, a compressed gas receiver 4, a housing 5 of an annular chamber 6 with openings 23 and 25, a striker / B / 2, a drummer 3, nozzles 19 with openings 23, a collet 8 for fixing B 2, a piston / П / 11, a trigger mechanism, electrically controlled spools 15 and 26, and a source of compressed gas. To prepare working stroke B 2, it is necessary to lower the device onto the workpiece 27 located on the matrix 28, and press it, aligning the holes 23 and 24 and connecting the sub-rib cavity and the annular chamber 6 with the atmosphere. The spool 26 connects the annular chamber 6 with the atmosphere. P 11 is pressed against the barrel 1. The spool 15 connects the over piston cavity 13 with the atmosphere. P 11 is moved upwards, B 2 is released from collet 8, and a punch occurs. To lift B 2, the device is lifted up. When this nozzle 19 is lowered, the holes 23 are blocked and disconnected from the atmosphere. With the help of an electrically controlled spool 26, the compressed gas enters the collar cavity of the barrel 1 and moves B 2 up to its original position. 1 hp formulas. 1 il.

Description

(21) 4349174 / 25-27: (22) 12/24/87

(46) 08.23.89. Bul 31

(72) M.V. Lipgart, E.L. Silberstein,

A.A. Dobrovolsky, E.A. Water is new

B.C. Ferberova and E.K. Makhnach

(53) 621.98.06 (088.8)

(56) USSR author's certificate. 1058678, cl. B 21 D 26/06, 23.10.79.

(54) DEVICE FOR SHOCK SHEET STAMPING

(57) The invention relates to the processing of metals by pressure, in particular to the impulse processing of metals, and can be used in devices for sheet punching, as well as for carrying out regular finishing work. Purpose of the invention

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increase impact energy. The device comprises a barrel 1, a compressed gas receiver A, a housing 5 of an annular chamber 6 with openings 23 and 25, a firing pin (B) 2, a drummer 3, nozzles 19 with openings 23, a collet 8 for fixing B 2, a piston (P) 11, trigger, electrically controlled spools 15 and

26 and a source of compressed gas. For sub-Q cooking of working stroke B 2, it is necessary to lower the device onto the workpiece 27, located on the matrix 28, and press, aligning the holes 23 and 24 and connecting the cavity podbakovkov and the annular chamber 6 with the atmosphere. Spool

The invention relates to the processing of metals by pressure, in particular to the impulse processing of metals, and can be used in devices for sheet punching, as well as for performing correcting and finishing work.

The aim of the invention is to increase the impact energy.

The drawing shows the device, the overall appearance; incision.

The device contains a barrel 1, moving firing pin 2 along it, a drummer 3 mounted concentrically to the trunk.

I, receiver A with compressed gas and body 5 of the annular chamber 6.

In the lower part of the barrel 1, channels 7 are made, connecting the sub-rib cavity of the barrel 1 with the cavity of the annular chamber 6.

In the upper part of the barrel 1 there is a collet 8 for fixing the striker 2 in the upper position and the trigger mechanism, made of the housing 9 with a hole 10, of the stepped piston

I1, resting on the end of the barrel 1, and the cover 12.

The opening 10 connects the over piston cavity 13 with the source 14 of compressed gas through electrically controlled valve 15. The cover 12 has an opening 16 connected to the atmosphere and to the cavity 17 above the shank of the piston 11 having a through axial opening 18.

Thus, the nadboykovoy cavity through the holes 18, the cavity 17 and the hole 16 is connected with the atmosphere.

26 connects the annular chamber 6 to the atmosphere. П П П pressed to the barrel 1. The spool 15 connects the over piston cavity 13 with the atmosphere. P 11 is moved upwards, B 2 is released from collet 8, and a punch occurs. To lift B 2, the device is lifted up. In this case, the nozzles 19 are lowered, the apertures 23 are closed and disconnected from the atmosphere. With the help of an electrically controlled spool 26, the compressed gas enters the collar cavity of the barrel 1 and moves B 2 up to its original position. 1 hp f-ly. 1 il.

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Nozzles 19 with grooves 20 are mounted on the housing 5 of the annular chamber 6 with the help of pins 21 and spring 22 with the possibility of axial movement within the grooves 20.

In the lower part of the casing 5 of the annular chamber 6 and the nozzle 19, the radial holes 23 and 24 are made with the possibility of their alignment and overlapping with the axial movement of the nozzle 19.

In the upper part of the housing 5 of the annular chamber 6, an opening 25 is connected, which is connected to a source of compressed gas through an electrically controlled valve 26.

The device works as follows.

To prepare the working stroke of the striker 2, it is necessary to lower the device onto the workpiece 27 located on the matrix 28 and press, overcoming the force of the spring 22. In this case, the body 5 and the barrel 1 move relative to the nozzle 19 and the hammer 3 by the size of the gap a, resulting in the hole 23 and 24 are combined and connect the padding cavity through the channels 7 and the annular cavity 6 with the atmosphere, and the electrically controlled spool 26 also connects the annular chamber 6 through the openings 25 to the atmosphere. The over piston cavity 13 is under the pressure of the compressed gas coming from the source 14, while the piston I1 is pressed against the end of the barrel 1 and separates the cavity of the receiver 4, which through openings 18 and 16 and the cavity 17 is connected to the atmosphere from the flange cavity of the barrel 1.

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To make the working stroke of the striker 2 by means of an electrical control of the spool .5, the over-piston cavity 13 is connected to the atmosphere. In this case, the piston 11 moves upward under the influence of compressed gas in the receiver 4 on the end face of the piston 11 and connects the cavity of the receiver 4 with the nadvikovoi cavity of the barrel 1, and Q the stem of the piston 11 intersects the hole 16 connecting the superstructure with the atmosphere.

Under the pressure of the gas, the firing pin 2 is released from the collet 8 and accelerates, 15 the gas from the tamping cavity is forced into the atmosphere through the channels 7 and the holes 23, 24 and the annular chamber 6.

Upon impact of the striker 3, the kinetic energy of the striker 2 is transmitted in the form of high pressure waves to the material of the workpiece 27 and deforms it through the matrix 28. After the impact, the electrically controlled H-2 ;, the tray 5 I connects to the source 14 of the compressed gas a cavity 13 The piston 11 is lowered down onto the end of the barrel I, the cavity of the receiver 4 is disconnected from the barrel end cavity 1, and the back end cavity is connected to the atmosphere through the holes

18 and 16 and the cavity 17.

To lift the striker 2, the device is lifted upwards. At the same time, under the influence of the spring 22 nozzles

19 is released by a, holes 23 are blocked and disconnected from the atmosphere.

By means of an electrically-controlled 0 spool 26, the annular chamber 6 is connected through the openings 25 to a source 14 of compressed gas. Compressed gas through the annular chamber 6 and channels 7 enters the collar cavity of the core-5 and moves the firing pin 2 up to its original position in the collet 8. At the same time, the hammer 3 is pressed against the collar of the barrel 1 and locks the collar cavity of the barrel, providing 50 the possibility of lifting Peeler 2. Electrically controlled spool 26 connects annular cavity 5 to atmosphere. The device is in the initial position and is ready for 55

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the next working stroke of the firing pin 2. Thus, the use of the proposed device allows to increase the impact energy by eliminating excessive pressure in the liner cavity, since this cavity is in communication with the atmosphere during the working stroke of the striker.

Claims (2)

1. A device for striking sheet punching, containing a source of compressed air, a barrel, mounted. The firing pin can be moved along it, an elastic drummer, a receiver located concentrically to the trunk, and an annular chamber body, with channels in the lower part of the barrel connecting the underflank cavity of the barrel. cavity annular chamber, placed in the upper part of the barrel of the collet for fixing the striker, trigger, cover, which is different in that, in order to increase the impact energy, it is equipped with a compression control system of that gas in the form of two electrically controlled spools, spring-loaded nozzle, installed co-centrically to the annular chamber body with the possibility of axial movement, made in the lower part of the body of the annular chamber and the nozzle by radial holes with the possibility of their combination and overlapping, in the upper part of the body of the annular chamber with an orifice for supplying compressed gas, and the trigger mechanism is made in the form of the body with a stepped piston located in it with a shank having a through axial bore, with a hole in the case of the trigger mechanism connecting the piston cavity with a source of compressed gas, and an opening in the cover connecting Noe with the cavity of the shank. 2. The device according to claim 1, characterized in that in order to limit the nozzle code relative to the annular chamber body, pins are mounted in the body so that they can be moved along the grooves made in the nozzle.