DE3131393A1 - REEL FOR CARRYING OUT THE MAGNETIC DEFORMING METHOD AND METHOD AND DEVICES FOR PRODUCING THIS REEL - Google Patents

Description

PATENT LAWYERS:;

ZIPSE + HABERSACK ■ - 9 -

AUTHORIZED REPRESENTATIVES AT THE EUROPEAN PATENT OFFICE

DIPL.-ING. H.-J. HABERSACK, MUNICH DIPL.-PHYa E. ZIPSE. BADEN-BADEN

Telephone (O72 21) 2 24 lulnuinmme ATOMPATLNV Tulex 07 81 3O7 zipat d

Lesslngsiraße

D 757O BADEN-BADEN

Applicant:

Center Stephanois de Recherches Mecaniques HYDROMECANIQUE ET FROTTEMENT (societe anonyme) rue Benoit Fourneyron Zone Industrielle Sud 42160 ANDREZIEUX-BOUTHEON (France)

Title:

Coil for carrying out the magneto-deformation process, as well as processes and devices for producing this coil

Priority:

August 8, 1980 France No. 80 18

The invention relates to a coil for carrying out the process generally referred to as the "magneto deformation process" . It also relates to methods and devices for producing such a coil.

The object of the invention relates in particular to the technical field of joining, assembling or others Wise uniting of different parts or organs * affects you likewise the technical field of electricity.

There are methods of electromagnetic deformation and welding It has become known, which consist of a previously in capacitors to release stored energy of high intensity in a coil arranged in a suitable manner to the workpieces to be treated. These processes have become known as "magneto welding" or "magneto deformation". The principle of this procedure consists in that «, under the influence of the change in the Magnetic field of the coil, the workpieces to be treated made of electrically conductive metal are passed through the inducing currents will. The combination of the magnetic field and the induced Currents that develop according to the laws of Laplace and Foucault, create one for deforming, assembling or treating the workpieces a suitable force suddenly and without contact.

Specific applications for carrying out the magnet welding process or magnet deformation have been suggested.

For numerous applications that have a great deal of interest, occurs a major obstacle. The coil for magnet deformation, which consists of a conductor element supported by a housing or an insulating sleeve exists, is generally around the work to be treated

pieces arranged. When the process is finished, the spool must be withdrawn, running along the workpiece to it outer end must slide. However, this is not possible in those cases where the workpieces are very long or when the coils are not can engage through the outer ends.

The present invention is therefore based on the object Avoid difficulties and generalize the application of the magnet deformation technique. To solve the task at hand According to the invention, a coil for carrying out the method of magnet deformation and magnet welding is proposed, which consists of a helically wound conductor element on or in a housing of great electrical resistance is arranged and which is characterized in that the conductor and the housing are arranged in one or more parts which can be opened and / or deformed such that they are in all Cases (closed systems, long workpieces, outer ends not intervening for the coils ...) where the coils normally attach to the Body can be brought to that by the magneto deformation process adapted to be deformed workpieces or can be withdrawn from these.

The invention relates to methods and devices for manufacturing this coil with different Aüsführungsformen.

According to a first embodiment, they form a solenoid helical conductor and a corresponding cylindrical or

other housings having a shape adapted to the workpiece are made up of at least two parts, the connecting and mounting surfaces of which lie in diametral or radial planes.

According to a further exemplary embodiment, there is only the housing of several parts that can be opened and which can be dismantled Wise assembled, being the inside and / or the outside is designed such that the conductor element can be received in a dismountable manner.

According to a further embodiment, the Leitorelement is with connected to a housing made of a material or materials that manually or nrfechansich different elastic deformations can be subjected.

These and other properties emerge from the following description. Based on the drawings, the example should be preferred Embodiments of the subject matter of the invention are explained in more detail.

In the drawings shows

Fig. 1 is a schematic section through a circular coil for magnet deformation, which along a diametrical Level is cut.

Fig, 2 shows a similar illustration as in Fig. I ₁ after the connection of the cut parts of the coil.

Fig. 3 shows a purely schematic section, which a represents circular coil for magnet deformation, which is cut or divided in radial planes.

Fig. 4 shows a section corresponding to Fig. 3 after connection the separated part of the coil.

5, 6, 7, 8, 9 and 10 show partial sections of a circular Coil.zur Magnetowerformung, whose housing and conductor element have the shape of a solenoid and which are diame-tral cut.

5, 6, 7 and 8 show mechanical devices for temporary Connection of the windings of the solenoid.

5 and 7 show the coil before the connection of the windings, while

FIGS. 6 and 8 show the coil after the said windings have been connected represent.

Figs. 9 and 10 show an example of the temporary connection of the Windings by means of a liquid, electrical conductor "

Fig. 9 shows the coil before connecting the windings, while

Fig. IO this coil after the connection of the windings mentioned represents.

Fig. 11 shows on an enlarged scale a partial section, which shows a coil according to the embodiment corresponding to Figures 9 and 10 prior to the connection of the windings.

Fig. 12 shows a plan view of the area corresponding to that Arrow F of Fig. 11.

FIGS. 13 and 14 show views similar to FIG. 12, respectively further modified embodiments.

Fig. 15 is a perspective view showing a coil for magneto deformation according to the invention, the housing consists of two openable half-shells and which forms a pair of tongs, which is formed in the interior in such a _f about by various means the introduction and the slight lifting of a in a solid to allow the present ladder element.

FIG. 16 shows a corresponding view of FIG. 15, which shows the opened pliers and the retraction of the conductor element represents.

FIG. 17 shows a cross section along a screw thread according to the embodiment of FIG. 15.

Fig. 18 shows a perspective view of a helically extending serpentine tube.

19 shows a perspective view of two i-cup-shaped Elements for forming the housing and the coil, which with the aid of the one shown in FIG Coiled tube, which was previously cut into two parts, is formed in this way to form a helical To form a cavity which is intended to receive a conductor element in the form of a liquid.

Fig. 20 shows a longitudinal section through a coil, accordingly the embodiment of FIG. 19.

FIG. 21 shows a cross section along the line 21-21 of FIG. 20th

Figs. 22 and 23 show schematic views showing the filling and emptying of the helical cavities forming the windings, corresponding to the embodiment of FIGS. 19 and 21.

Fig. 24 shows a perspective view of a collapsible

o - '- ■ · coil according to the invention, consisting essentially of two

Elements of the inner shell and two elements of the outer shell for attachment and easy installation a solid conductor element is obtained.

25, 26 and 27 show longitudinal sections showing the various modified embodiments of FIG. 24 represent.

FIG. 28 shows a cross section corresponding to the embodiment of FIG. 24, with the outer shell through a Electrical tape material is replaced.

29 shows a method for producing the coil according to the embodiment corresponding to FIGS. 24, 25, 26, 27 and 28.

FIG. 30 is a schematic perspective view showing the represents a modified embodiment of the coil with an elastically deformable insulating material.

31 shows the deformation of the coil according to the embodiment of Fig. 30.

In Figs. 1 to 10, a coil for magnet deformation is shown, which is denoted in its entirety by ß and a cylindrical or another one adapted to the geometry of the workpiece to be treated Has shape. In a known manner, the coil consists of

an insulating housing 1 of high electrical resistance with an inner, helical conductor 2, which is a solenoid made of copper or other conductive material.

According to the invention, there are the solenoid 2 and the housing 1 of at least two parts A and C, their connection and assembly surfaces in two diametrical planes (Fig. I and 2) or in two radial planes (Fig. 3 and 4) lie. It goes without saying that in certain cases it is possible to use the helical To divide the conductor 2 and the housing 1 into a number of several segments, the connection and assembly surface of which is through the The axis of the coil for magnet deformation run. The

outer ends of the links 2 of each element of the helical winding 2 of the cylindrical coil provided with connecting means which, after connecting parts A and C of the coil, the Ensure conduction of electrical current. Some non-limiting examples of the electrical connection are shown in FIGS. 5-14 shown.

As can be seen from FIGS. 5 and 6, the electrical connection of each winding element for producing the complete cylinder coil is made by means of plug-socket arrangements 3 and 4, which are known as "banana plug ¹ " and have two or more radial contacts. 7 and 8, a complementary system of cutting edges 5 and clamps 6 or other equivalent devices, which by clamping.

other grip, used.

> To make the electrical connection of each element of the winding 2

3, it is provided that one of its outer ends 2 is immersed in a liquid 7 of good conductivity (mercury, salt water ), which with the outer corresponding end 2 of the

following element of the winding according to FIGS. 9, 10 and 11 is electrically connected to immerse. The liquid is contained in a recess 1 in the housing 1 wherein it is sealed in a suitable W _e ise by a diaphragm 8 (Fig. 12 and 13) of an easily deformable material during the connection of each winding of the cylindrical coil 2 (Fig. 11) . If the conductor liquid 7 has sufficient surface tension, a brush arrangement b is used as a sealing means for the said liquid 7, which acts as a seal on the said liquid, but which can be bridged by the outer end of the winding, which penetrates at this point (Fig. 14).

According to a modified embodiment of the coil for magnet deformation according to the invention, the housing consists of several elements that can be opened or assembled in a dismountable manner and are designed inside and / or outside in such a way that they can temporarily accommodate the conductor element . ■

In general, the various elements forming the housing a helical cavity or other hollow entry

stamping for the coil according to the intended operation Appropriate form, the said impression being provided with a conductor element, solid, liquid, gaseous or otfps is a plasma. In the following description, coils for magneto deformation, the element of which is in solid or liquid State is described.

In FIGS. 15, 16 and 17, a cylindrical housing 9 is shown.

1 2 placed, which to form two shells 9 and 9 diametrically

is separated, said shells at 9 by an articulated connection or another suitable device and in this way form a pair of openable pliers (Figs. 15 and 16)

12th

According to the invention, in each shell 9 and 9 is a helical one Cavity 9 (shown in phantom in Fig. 15), the Receives conductor element.

In the case of a solid conductor element, this becomes a flexible one Material chosen to be easy to insert and withdraw from the indentation 9 during opening of the housing 9 (Fig. 16). For example, a copper wire 10 is chosen that is carefully selected

is glowing, which is pressed into the helical cavity .9 and bores itself there due to its softness until

12 4

its two outer ends 10 and 10 protrude from the opening 9 (Fig. 16) to be long-connected to a pulse generator. In the same way, the cavity 9 can be soft with a Metal conductor braid can be provided by pressing. The head

10 can also be inserted and withdrawn by mechanical means

be, for example, the outer end of the conductor 10 with a piston or the like provided to its introduction with Compressed air and thus the winding of said conductor 10 in to ensure the cavity 9 until it protrudes to to be able to connect it to a pulse generator. Of course the piston can also be driven by a liquid pressure to the soft conductor 10 in this way

4th
to retract the cavity 9.

In the same way the electromagnetic Field-yielding forces are used that are necessary to to introduce the metal which forms the conductor into the cavity 9 in a suitable manner. In the embodiment of FIG up to 24 a helical snake tube 11 (Fig. 18) was made, which has been suitably cut in one or more diametrical planes. Then an insulating material is used poured around the cut parts of the snake tube Π to create two or more bowl-shaped eggs

12th
to form elements 12 and 12 (Fig. 19) / which are intended to form the open housing of the coil (Fig. 20). The assembled shell elements 12 and 12 (FIG. 21) form hollow windings 11 which are connected to one another by suitable means, such as hydraulic aids.

In this way, the housing 12 becomes a dense helical one

3
Cavity 12 made, which is used to accommodate a highly conductive liquid (mercury, saline ...).

When using a conductive liquid, it is essential to avoid the formation of air bubbles that could cause the Formation of an arc, the deterioration of the conductive properties of the electrical fluid and the essential resulting from it Reduction of the effectiveness of the very intense currents required to obtain magnetic impulses, cause. Figs. 22 and 23 show in a schematic manner an example of the filling of the windings 11 which form a solenoid, the elements at 14 and 15 of which with stopcocks 16 and 17 are connected.

After closing the housing 12 (connection of the half-shells

1 2

12 and 12) with the cock 16 closed, the windings 11 existing air through an opening 18 when open Tap 17 sucked off. When a sufficiently large negative pressure is achieved is to suck in the liquid 13, the valve 17 is closed and the valve 16 is opened. The one contained in a container Liquid 13 is then sucked into the hollow coils 11 and comes into contact with the connecting rod 14. Then the tap 16 is also closed, and the coil can from this moment on to the pulse generator by known means Devices, in particular connecting terminals 14 and I ^ be connected. .

After passing through the coil the required electrical impulses were sent, the opening 18 is pressurized, whereupon the taps 16 and 17 are opened. The liquid

Speed 13 then flows again into the container r. When the liquid 13 has completely passed through the cock 16, it is closed and ι
be separated.

1 2 closed and the shells 12 and 12 of the housing can be

In the embodiment of FIGS. 24 to 27, the separable Coil for magnet deformation according to the invention by a solid conductor element 19 (wire made of copper or another conductive Material) and a separable insulating housing 20 is formed, which consists of at least two elements of inner shells 20

2 3

and 20 and at least two elements of outer shells 20 and 20 (Fig. 24). The wire 19 is to form a

1 2 3 solenoid between each of the shell elements 20, 20. 20th

4th
and 20 arranged so that they can be easily dismantled.

For this purpose, either on the outer circumference of the inner one

12th
Shells 20, 20 (Fig. 25) or, jointly offset, on

12th

the inner half-shells 20, 20 and the outer half-shells 20, 20 (Fig. 26) a helical groove 20 is provided. The helical groove has a square semicircular shape or another cross-section which substantially corresponds to the profile of the solid conductor element which is arranged therein.

The outer shell members 20 and 20 are made by a device held in the closed position, which the opening forces counteracts that occur during operation of the magnet deformation. For this purpose a mechanical device,

which may be combined with an electrical, hydraulic or pneumatic system.

1 2 There is radial play between the inner shells 20, 20

3 4
and the outer shells 20 and 20 are provided to give the windings of the conductor element 19 an accurate bias.

The coil is attached to the workpieces to be treated as follows. After assembling the inner shells -

12 "3

elements 20 and 20 and the closure of the outer shells 20, 20, the conductor element 19 is partially in the helical groove

c q

20 used, whereupon this arrangement in the outer shell 20,

4th
20 is introduced by an axial pushing and screwing movement (Fig. 29).

According to the embodiment of FIGS. 24-27, there is an insulating shell 21 provided, which are diametrically divided into two symmetrical parts 21

2

and 21 is divided. Then a helical groove is made provided on the outer periphery of the shell 21. A tape 22 of insulating material is wound on the outer shell 21, all the more so by connecting a helical cavity for receiving of the fixed conductor element 23 to form.

To temporarily clamp the workpieces to be treated, can

finally a non-opening but deformable coil is provided be (Fig. 31). In this case, the housing 24 is made of an insulating material which is capable of being elastically deformed the conductor element being a copper wire 25

can, which is helically wound in or on a rectangular carrier body forming the housing 24 (Fig. 30),

It goes without saying that the coils for magneto deformation are carried out according to the invention in different dimensions can. In addition, the housing can have various shapes and cross-sections and to facilitate opening in at least two parts in the form of pliers or easily dismantled and assemblable shells are carried out in connection with the conductor element. It can also cool the coil possibly with intensive use by a known device with circulation of a liquid in the conductor, which, then tubular or can be formed parallel to this.

The advantages result from the description. In particular, the generalization of the process of magneto deformation should be emphasized in cases of: closed systems, long pieces, outer ends that cannot be grasped by the coils, etc. z. B. the following are listed: the assembly of pipelines, bicycle frames, Heating radiators and their pipelines.

The invention does not remain limited to the illustrated embodiments limited, but can be modified in its various parts without departing from the scope of the invention.

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Claims (1)

PATENT CLAIMS Coil for performing a generalized magneto deformation process, consisting of a helically wound conductor element which is placed on or in a frame or a housing of high electrical resistance is, characterized in that the conductor and the housing in one or more parts are designed that can be opened and / or deformed in such a way that they can be used in all cases (closed systems, long Workpieces, outer ends not accessible for the Coils ...), where the coils can normally be brought to the place to be made by the magneto-deformation process adapted to be deformed workpieces or can be withdrawn from these. 2. Coil according to claim 1, d α d υ r c h characterized in that the helical coil forming a cylinder coil Head (2) and the one corresponding cylindrical Shape or some other shape for receiving the housing (1) having the workpiece to be shaped, made of at least two parts (A and C), the connection and assembly surfaces of which lie in diametrical or radial planes. 3. A method for manufacturing a coil according to claim 1 and 2, characterized in that the helical conductor (2) and the housing (1) in several parts are made whose connection and assembly planes run through the axes of the coil, whereupon the outer ends of the connections (2) of each winding element of the solenoid (2) with connection means which ensure the electrical conduction after the connection of the parts (A and C) of the coil. 4. Coil according to one of claims 1 |! And 2, characterized in that that the electrical connection of each winding element (2) to form a complete Cylinder coil (2) takes place through a plug-socket arrangement (3, 4) which has two or more radial contacts shows. 5. Coil according to one of claims 1 and 2, characterized in that the electrical connection each winding element (2) to form a complete solenoid (2) by a complementary one System of knives (5) and clamps (6) or other equivalent devices takes place by clamping or expansion act. 6. Coil according to one of claims 1 and 2, characterized characterized in that the electrical connection of each winding element (2) for restoration the complete solenoid (2) by immersing one of its outer ends (2) in a liquid (7) of good Conductivity takes place, which is electrically connected to the corresponding outer end (2) of the following winding element is, wherein said liquid is contained in a recess (1) of the housing (Ί) and by means of a Diaphragm (8) is sealed, which is formed easily deformable during the connection of each winding of the coil (2) is. 7, bobbin according to claim ό, characterized in that that the liquid (7) has sufficient surface tension, the sealing means being the a brush arrangement (b) is used, which acts as a seal on the liquid, the outer end penetrating into the liquid being the Can bridge sealant. 8 .. coil according to claim 1, characterized net that the housing consists of a cylindrical or other, the workpiece adapted shape of at least two parts exists, the connection and assembly surfaces of which extend diametrically or radially, said parts of the Housing have a helical recess or other hollow indentation to accommodate the conductor element. 9, method for producing a coil according to claim 8, characterized in that a housing is made from several segments, the connection of which and assembly plane runs through the axis of the coil, whereby a recess or a hollow impression is formed in the housing consisting of several elements, whereupon the mentioned recess or the embossing with a Head element is provided. 10. Coil according to one of claims 1 and 8, characterized characterized in that the housing (9) dia- 12 is metrically separated to form two shells (9, 9), hinged at (9) to form a clamp with an indentation (9) in each the half-shells are provided to form a helical cavity for receiving the conductor element. 11. Coil according to claim 10, characterized in that that when using a solid conductor element this consists of a copper wire (10) or a other conductive material that has been carefully annealed or made of a metal conductor braid. T2. Method for manufacturing a coil according to claim 11, characterized in that the wire (10) or the braid into the helical recess (9) is pressed until the two outer ends (10, 10) protrude from the recess (9) and the protruding ends can be connected to a pulse generator, for example. 13. The method according to claim 12, characterized in that that in the recess (9) by means of mechanical devices, the flexible electrical conductor element is introduced. 14. The method according to claim 9, characterized in that that a serpentine tube (II) is produced, which according to one or more radial or diametrical planes is cut, then around the cut parts of the tube (11) Insulating material is poured to this way two or several shell elements (12 ¹ «and 12 ² ) to form an open housing (12), the assembled shells 12th
(12 and 12) are connected to one another in such a way that the winding elements (11) formed in this way form a tight, helical cavity (12) for receiving an electrically conductive liquid. 15. Procedures and devices for introduction and withdrawal the liquid in and out of the solenoid formed by the hollow winding elements (11) and at (14 and 15) are connected to taps (16 and 17) according to claim 14, characterized in that that after the closure of the housing (12) of the cock (16) is closed, and that further through the opening (18) of the Air content in the hollow winding (11) of the coil is sucked off, whereupon the cock (17) is opened to a sufficient negative pressure for sucking in the liquid (13), whereupon the cock (17) is closed and the cock (16) is opened, to suck the liquid content (r3) of a container (r) into the hollow windings (11), which then come into contact with the connecting terminal (14), whereupon the tap (ΐό) is closed and the coil is connected at this moment a pulse generator can be connected, according to the application of the required electrical impulses the opening (18) is pressurized, whereupon the taps (16 and 17) are opened to let the liquid (13) into the To conduct container (r) and, when the said liquid has passed the tap (16), this latter is closed and 1 2
the two shells (12 and 12) of the housing separated will. 16. Coil according to one of claims 1, 8 and 9, characterized in that the dismountable housing (20) of at least two inner shell elements (20 and 2 3 20) and at least two outer shell elements (20 and 20), between which in the form of a solenoid a fixed conductor element (19) engages, wherein a ι ο
radial play between the inner shells (20 and 20) and the outer shells (20 and 20) is provided to
to impart a bias voltage to the windings of the conductor element (19). 17. Coil according to claim 16, characterized in that that the conductor (19) in a helical groove (20 ") is wound either on the outer 1 2
Circumference of the inner shells (20, 20) or is formed on the inner circumference of the outer shells (20, 20), or • I - Λ O A divided on said shells (20, 20) and (20, 20) is. 18. A method for manufacturing a coil according to the claims 16 and 17, characterized in that after the assembly of the inner shell elements (20 2 and 20) and the closure of the outer, shell elements (20 and 20) the conductor element (19) is partially inserted into the helical groove (20), whereupon the arrangement in FIG Q A the outer shells (20, 20) by pushing and screwing is introduced. 19. Coil according to one of claims 1, 8 and 9, characterized characterized in that the dismountable housing consists of a diametrically cut shell (21) for 12 Formation of two symmetrical parts (21 and 21) with one outer helical groove (21), which in connection with one on the shell (21). wrapped electrical tape (22) forms a helical cavity for receiving a fixed conductor element (23). 20. Coil according to claim 1, characterized in that that the housing (24) consists of an insulating material which can be elastically deformed, wherein the conductor element consists of a copper wire (25) or another conductor material which is helically attached to or mounted on said housing (24). 21. Coil according to claim 1, characterized in that that their cooling takes place tubularly or parallel to the conductor by a circulation of a liquid.