CN208099020U - A kind of electromagnetism hemmer - Google Patents

Abstract

The utility model discloses a kind of electromagnetism hemmers, including：Punch-pin, ladder-like plate spiral winding, to flange plate and first pulse power；The number of plies of the ladder-like plate spiral winding is one layer or more, and the number of plies of the ladder-like each circle of plate spiral winding is successively successively decreased from the inside to the outside；Described to be set between the punch-pin and the ladder-like plate spiral winding to flange plate, the punch-pin is used to support described to flange plate；Two line ends of the ladder-like plate spiral winding are electrically connected with the first end and second end of first pulse power respectively.The number of plies of each circle of ladder-like plate spiral winding is successively successively decreased from the inside to the outside in electromagnetism hemmer, ladder-like plate spiral winding has incremental electromagnetic force from inside to outside, improve distribution of electromagnetic force, improve flange height, guarantee flange quality, solves the irrational distribution in current plate coil magnetic field and electromagnetic force, flange height is limited when carrying out plate flange, the ropy technical problem of flange.

Description

A kind of electromagnetism hemmer

Technical field

The utility model relates to material forming field more particularly to a kind of electromagnetism hemmers.

Background technique

Traditional plate flange part manufacturing process is produced into using a set of fixture for forming and press machine with concave-convex mold This height, period are long.Moreover, plate is tangentially pressurized and is easy to appear corrugation in turn-up process, and for high-intensitive difficult form metal Traditional processing method is difficult to manufacture for material.

Electromagnetic pulse forming is a kind of method for carrying out High-speed machining to metal works using pulse magnet field force, and material is in arteries and veins The forming property that can be obtained higher than under conventional ones processing is rushed under the conditions of magnetic field force high-speed deformation.

But existing plate coil is turned over since the irrational distribution in magnetic field and electromagnetic force limits when carrying out electromagnetism flange Side height, and flange is of poor quality.

Therefore, the irrational distribution in current plate coil magnetic field and electromagnetic force is resulted in, flange when plate flange is carried out Height is limited, the ropy technical problem of flange.

Utility model content

The utility model discloses a kind of electromagnetism hemmers, solve point in current plate coil magnetic field and electromagnetic force Cloth is unreasonable, and flange height is limited when carrying out plate flange, the ropy technical problem of flange.

The utility model provides a kind of electromagnetism hemmer, including：Punch-pin, ladder-like plate spiral winding, to flange Plate and first pulse power；

The number of plies of the ladder-like plate spiral winding is one layer or more, the ladder-like each circle of plate spiral winding The number of plies is successively successively decreased from the inside to the outside

Described to be set between the punch-pin and the ladder-like plate spiral winding to flange plate, the punch-pin is used for Support is described to flange plate；

Two line ends of ladder-like plate spiral winding first end and second with first pulse power respectively End electrical connection.

Preferably, further include：Plate fixing piece；

The plate fixing piece by described to flange plate for being fixed between punch-pin and the plate fixing piece.

Preferably, further include：First fixing piece；

First fixing piece is insulating materials for fixing the ladder-like plate spiral winding, first fixing piece Manufactured fixing piece.

As can be seen from the above technical solutions, the utility model embodiment has the following advantages that：

The utility model provides a kind of electromagnetism hemmer, including：Punch-pin, ladder-like plate spiral winding, to flange Plate and first pulse power；The number of plies of the ladder-like plate spiral winding is one layer or more, the ladder-like plate spiral The number of plies of each circle of coil is successively successively decreased from the inside to the outside；It is described to be set to the punch-pin and the ladder-like plate to flange plate Between spiral winding, the punch-pin is used to support described to flange plate；Two line ends of the ladder-like plate spiral winding It is electrically connected respectively with the first end and second end of first pulse power.

The number of plies of each circle of ladder-like plate spiral winding in the electromagnetism hemmer of the utility model is from the inside to the outside Successively successively decrease, so stress is minimum at the center of ladder-like plate spiral winding, stress is maximum at outmost turns, ladder-like plate spiral shell Spin line circle has an incremental electromagnetic force from inside to outside, improves the distribution of electromagnetic force of classic flat-plate coil, high improving flange While spending, guarantee flange quality, solve the irrational distribution in current plate coil magnetic field and electromagnetic force, carries out plate and turn over Flange height is limited when side, the ropy technical problem of flange.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property It puts, can also be obtained according to these attached drawings other attached drawings.

Fig. 1 is a kind of structural schematic diagram of the electromagnetism hemmer provided in the utility model embodiment；

Fig. 2 is a kind of flange effect picture of the electromagnetism hemmer provided in the utility model embodiment；

Wherein, appended drawing reference is as follows：

1, punch-pin；2, to flange plate；3, ladder-like plate spiral winding；4, plate fixing piece.

Specific embodiment

The utility model embodiment discloses a kind of electromagnetism hemmer, solves current plate coil magnetic field and electromagnetism The irrational distribution of power, flange height is limited when carrying out plate flange, the ropy technical problem of flange.

Fig. 1 and Fig. 2 are please referred to, a kind of one embodiment of the electromagnetism hemmer provided in the utility model embodiment, Including：Punch-pin 1, ladder-like plate spiral winding 3, to flange plate 2 and first pulse power；

The number of plies of ladder-like plate spiral winding 3 is one layer or more, the number of plies of each circle of ladder-like plate spiral winding 3 from It is interior to successively successively decreasing outside

It is set between punch-pin 1 and ladder-like plate spiral winding 3 to flange plate 2, punch-pin 1 is used to support to flanged plate Material 2；

First end and second end of two line ends of ladder-like plate spiral winding 3 respectively with first pulse power is electrically connected It connects.

It should be noted that the number of plies of ladder-like plate spiral winding 3 is one layer or more, the specific number of plies carries out as needed Selection, the number of plies of ladder-like plate spiral winding 3 as shown in Figure 1 are five layers；

The number of plies of each circle of ladder-like plate spiral winding 3 is successively successively decreased from the inside to the outside, i.e., at the center of coil, The number of plies of coil is fewer, as shown in Figure 1, the coil number of plies of innermost circle is 1, further away from the center of coil, the coil number of plies is more, most The coil number of plies of outer layer is 5；

Make the stress at the center of ladder-like plate spiral winding 3 minimum by the different coil numbers of plies, it is ladder-like flat Plate spiral winding 3 has an incremental electromagnetic force from inside to outside, improves the distribution of electromagnetic force of classic flat-plate coil, turns in raising While the height of side, guarantee flange quality, to obtain better flange effect；

Since the electric current passed through in coil when electromagnetism stretches is instantaneous Impulsive Current, so ladder-like plate spiral winding 3 two line ends are electrically connected with the first end and second end of first pulse power respectively.

Further, further include：Plate fixing piece 4；

Plate fixing piece 4 to flange plate 2 for that will be fixed between punch-pin 1 and plate fixing piece 4.

It should be noted that using the fixation of plate fixing piece 4 that can make in turn-up process to flange plate 2 to flanged plate The stabilization of material 2 improves flange quality, to obtain better flange effect.

Further, further include：First fixing piece；

First fixing piece is used for Fixed-order scalariform plate spiral winding 3, and the first fixing piece is fixed made of insulating materials Part.

It should be noted that the shape of the first fixing piece is not particularly limited in the present embodiment, it can be fixed frame, folder Gripping arm or suspension device routinely can choose fixed frame or clamping limb；

In order to avoid impacting when the energization of ladder-like plate spiral winding 3 to the first fixing piece, the first fixing piece is exhausted Fixing piece made of edge material；

As depicted in figs. 1 and 2, when needing to carry out flange, will be clipped in flange plate 2 first fixing piece and punch-pin 1 it Between, ladder-like plate spiral winding 3 is located at the marginal position to flange plate 2, by first pulse power to ladder-like plate 3 charged and discharged of spiral winding, ladder-like plate spiral winding 3 generates downward axial flange electromagnetic force, so as to flanged plate Material 2 deformation occurs complete flange.

The number of plies of each circle of ladder-like plate spiral winding 3 in the electromagnetism hemmer of the present embodiment from the inside to the outside according to Secondary to successively decrease, so stress is minimum at the center of ladder-like plate spiral winding 3, stress is maximum at outmost turns, ladder-like plate spiral shell Spin line circle 3 has an incremental electromagnetic force from inside to outside, improves the distribution of electromagnetic force of classic flat-plate coil, reduces flange system Number inhibits corrugation rebound, improves flange quality；

The forming limit that electro-magnetic forming can improve metal material can effectively improve drawing height, and it is existing to reduce unstability, drawing crack etc. As, and electro-magnetic forming is high-speed manufacturing process, can make to spring back after plate flange after shaping and corrugation is reduced, workpiece is by wink When electromagnetic force after by inertia complete deformation, inertia force can slow down the generation of necking phenomenon, the high speed of workpiece and mold Collision close to mold from far from die face so that be under different stress states, it is suppressed that the development of damage；

Plate fixing piece 4 can allow to flange plate 2 held stationary in turn-up process, and electromagnetism stretching device knot simultaneously Structure is simple, concise in technology, does not need the devices such as punch-pin 1 and press machine, electro-magnetic forming forming speed is fast, and work efficiency is high；

In conclusion electromagnetism hemmer disclosed in the present embodiment solves current plate coil magnetic field and electromagnetic force Irrational distribution, flange height is limited when carrying out plate flange, the ropy technical problem of flange.

A kind of electromagnetism hemmer provided by the utility model is described in detail above, for the one of this field As technical staff have change in specific embodiments and applications based on the idea of the embodiment of the present invention Place, to sum up, the content of the present specification should not be construed as a limitation of the present invention.

Claims (3)

1. a kind of electromagnetism hemmer, which is characterized in that including：Punch-pin, ladder-like plate spiral winding, to flange plate and One pulse power；

The number of plies of the ladder-like plate spiral winding is one layer or more, the number of plies of the ladder-like each circle of plate spiral winding Successively successively decrease from the inside to the outside；

Described to be set between the punch-pin and the ladder-like plate spiral winding to flange plate, the punch-pin is used to support It is described to flange plate；

Two line ends of the ladder-like plate spiral winding are electric with the first end and second end of first pulse power respectively Connection.

2. a kind of electromagnetism hemmer according to claim 1, which is characterized in that further include：Plate fixing piece；

The plate fixing piece by described to flange plate for being fixed between punch-pin and the plate fixing piece.

3. a kind of electromagnetism hemmer according to claim 1, which is characterized in that further include：First fixing piece；

For fixing the ladder-like plate spiral winding, first fixing piece is made first fixing piece of insulating materials Fixing piece.