JPS59127933A - Electromagnetic working device - Google Patents

Abstract

PURPOSE:To perform practicable electromagnetic working over a wide range with simple constitution by conducting electric current from a storage device to a flat plate-shaped coil, and processing a work by making use of the electromagnetic repulsive force. CONSTITUTION:Electric current is conducted impulsively at a desired positional relation or desired timing from a storage device 9 to a flat plate-shaped coil 5 and a work 13 positioned below a coil holder 3 is processed by making use of the electromagnetic repulsive force. The holder 3 is equivalent to the slide of an ordinary press machine. Therefore when the slide position is in an upper part, a switch is turned on and a capacitor is charged. When the slide position descends and attains the prescribed distance from the work, the switch is turned on to actuate a switching mechanism, thereby an electric discharge switch is turned on.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electromagnetic processing device that processes a workpiece using electromagnetic force. Specifically, an impulse current is applied as desired from a power storage device composed of a capacitor, etc., and an impulse current from the capacitor is applied to a flat coil provided in a coil holder, and the impulse current is applied to the coil. Cultivating electromagnetic repulsion for each i# electric board or PI electric material placed facing each other, and performing various processes on the workpiece, such as drilling (), drawing, knocking out, fixing nuts, and marking (=t cJ). I am involved in electromagnetic machining equipment that can do this.

The object of the present invention is to provide a practical electromagnetic machining device with a large enclosure and a 1q q. cylindrical configuration.

The electromagnetic processing device according to the present invention includes a coil holder supported within a support frame, a flat coil provided on the coil holder, and a power storage device including a capacitor.
A switching mechanism is provided for supplying the amount of electricity from the power storage device to the flat coil at a desired positional relationship or at a desired timing, and the switching mechanism supplies an amount of electricity from the power storage device to the flat coil at a desired positional relationship or at a desired timing. The purpose is to process a workpiece, which is placed below the holder by passing a current through it, using electromagnetic repulsion.

Hereinafter, the present invention will be described in detail with reference to examples.

Figures 1 to 6 show examples of the electromagnetic processing equipment of the present invention, Figures 7 and 8 show examples of flat coils used in the electromagnetic processing equipment, and Figure 9 shows examples of the electromagnetic processing equipment of the present invention. One example,
FIG. 10 shows an embodiment of the switching mechanism.

Each example will be explained in order.

FIG. 1 is a front view of the electromagnetic processing device. This consists of a coil holder 3 that is supported in a vertically movable manner within a support frame 1, a flat coil 5 provided in this coil holder, and a capacitor 7.
and a switching mechanism 11 that supplies the amount of electricity from the power storage device to the flat coil 5 in a desired positional relationship or at a desired timing. This is an electromagnetic machining device that processes a workpiece 13 located below a coil holder 3 by applying electromagnetic repulsion force by applying an electric current impulsively in a positional relationship or at a desired timing. Coil holder 3
A flat coil 5 is provided below. Flat coil 5
The details are shown in perspective views in FIGS. 7 and 8. Figure 7 shows the conductor wire wound into a spiral shape and finished into a flat plate shape. Figure 8 shows a copper plate rolled into a spiral shape and raised into a flat plate. ]
The inside of the coil and the space between the coil and the coil holder are filled with an insulating material r1 made of epoxy and reinforced. Further, a thin insulating plate 15 is provided on the surface of the coil for insulation. The lead wire 17 of the coil is connected to a flexible electric wire 19 so that it can be applied to the lower part of the coil holder.

FIG. 9 shows the electrical storage device-〇 in an electrical circuit diagram.

The voltage of the power supply 21 is stored in the capacitor 7 via the transformer 23. At this time, a charging switch swI, which is linked to a switching mechanism 11 which will be described later, is closed, and a discharge switch SW2, which is also linked to the switching mechanism, is turned on. FIG. 10 is a dimensional sequence diagram showing the switching mechanism. ] A switching mechanism that guides the electric charge charged in the capacitor to the flat coil 5,
It can also be processed by software on a microcomputer or configured by a logic sequence. In this example, an example of a flash detection is shown, in which the charging switch or the discharging switch of the power storage device is activated by excitation of the coils X and Y by the operation of the limit 1 switches R3+ and R82.

Xa indicates the a contact point of the coil X, and xb indicates the b contact point of the coil X. Further, Ya is the a contact point of the coil Y, and Yb is the b contact point of the coil Y. Switches SW1 and SW2 are prevented from being turned on at the same time.

The limit switches R8+ and R82 shown in this example detect the rotation angle of the crankshaft using a rotary encoder or rotary cam switch, and turn on the discharge switch at an arbitrary angle. This is a general term that includes switches that detect the position and switch, and switches that use a timer when processing a workpiece over time.

In the electromagnetic machining device shown in Fig. 1, an eddy current is applied to the workpiece 13, and the flat plate 5 receives a repulsion force of 7.11 to produce a small piece of metal.
+" 25 (J drawing process is performed.

'J Ilhor/J'3 corresponds to the slide of a normal press machine. Therefore, when the slide position is in the upper position, the switch R82 is turned on to charge the power supply, and when the slide position is lowered and the distance between the workpiece and the workpiece is about 0.5 to 1 mm, the switch is turned on. It is sufficient if R8+ is turned on, the switching mechanism 11 is activated, and the discharge switch SW2 is turned on.

R8+ and R82 of the switching mechanism may be operated by detecting the position of the coil holder with a bias detector or a limit switch. After finishing the discharge at an appropriate position, a timer is installed at a constant 11. ) It is also possible to turn on the J-switch R82, which starts charging after a while.

As shown in FIG. 1, the electromagnetic machining device can omit a mold compared to a normal pruning machine. Also, the slide can be mechanically simplified by simply positioning the slide on the instep.

FIG. 2 is a partially enlarged sectional view of the electromagnetic processing device shown in FIG. 1. In this example, the workpiece 13 is placed between the positioning bins 27 in order to perform a thin hole drilling process. When an impact current is passed through the plate-shaped coil 5, the conductive workpiece receives a downward force, but even if it is a conductive material, it is a surface-treated conductive material such as aluminum foil. If so, the workpiece can be machined in the same manner as shown in FIG.

FIG. 3 is a front view showing an embodiment of the knockout device, with a portion cut away. Two electrically conductive plates that can be moved up and down are provided below the flat coil 5 provided on the coil holder 3, and a hammer bin 3 is provided below the electrically conductive plates 29.
1 is connected, and the upper end of the knockout bin 35 through which the upper mold 33 attached below the coil holder 3 is passed is pushed by the lower end of the hammer bin 31.

This is a general press machine with a knockout device added. Considering that knockout is also a form of machining, it will be referred to here as knockout machining. When the workpiece 17-3 is fitted into the upper mold 33 after drawing has been completed, an impact current is applied from the power storage device 9 to the vP plate-shaped coil 5 of the coil holder 3, and the conductive plate The two are lowered to push the knockout bin 35 and push out the workpiece 13. The switching mechanism at this time can be a position detector using an optical sensor or a limit switch, as in the previous embodiment. These position detectors can be easily installed at any position, and this position can be changed freely by changing the position of the detector. The mechanical mechanism of the conventional knockout device pushes the knockout bottle downward just before it reaches the dead center, and it is difficult to operate it in a free position. Furthermore, mechanisms using hydraulic pressure or the like inevitably have a complicated structure. In the electromagnetic method of the present invention, the device is extremely simple, and it can be electrically automated easily at a desired height.Compared to drawing processing, the knocking process requires a small force, and therefore the power storage device The capacitor capacity is relatively small and p. In the figure, 37 indicates a buffer plate made of a material such as rubber.

8- FIG. 4 shows another embodiment of the knockout electromagnetic machining apparatus shown in FIG. 3, and shows the machining portion in an enlarged longitudinal sectional view. Is this a cylinder with a wide upper cross section and a narrow lower cross section in the coil holder 3? 39 is provided, the piston/11 provided at the upper part of the cylinder chamber is connected to the two upper vertically movable conductive plates, and the piston 43 provided at the lower part of the cylinder chamber is connected to the hammer bin 31.
The stroke is made larger. The figure shows the state before operation, and the flat coil 5 receives current from the power storage device 9 and is knocked out. The cylinder chamber 39 may be filled with an appropriate fluid. This is optimal when the drawing part of the workpiece 13 is deep, since it is possible to take a large knockout stroke.

FIG. 5 shows an electric potential machining device that utilizes the restoring force of a spring, and is shown in a partially cutaway front view. The processed parts are the same as those shown in FIG. 6, and the same reference numerals are the same, so please refer to FIG. 6, which is shown enlarged. A striker 45 is provided below the coil holder 3 via a restoring spring 47, and a striker 45 is provided below the coil holder 3 (in addition, a flat coil 5 and a striker 45 are provided below the coil holder 3).
The striker 45 is lowered by the electromagnetic repulsion force by placing two conductive plates provided in one part of the coil 5 facing each other and applying an impulsive current to the flat coil 5 in a desired positional relationship or at a desired timing. Due to its resilience, it is again 11
It was designed to cause harm. In this example, the striker 415 includes a punch 51 and is intended to fix the pierce nut 55 to the workpiece 13 that has been damaged on the die 53. In order to position a certain culm m, a coil holder is fixed to a slide of a press machine. When the position of the coil holder is detected and the switching mechanism is activated, the striker 45 to which the conductive plate 29 is attached is activated by the restoring spring/
Descend while compressing 17. The striker is provided with a section 450 at the bottom via a spring 57.
■-1 4 tensioners are strikers/159 parts 5
0 and presses down the workpiece 13. The extension 71.9 and the member 50 are engaged with the tip of a punch 51 of a S-Leica/1.5. When the striker 45 further descends, the spring 57 is compressed, and the punch 51 protrudes downward from the extension 49 to strike the workpiece 13.
Drilling of the hole, driving of the pierce nut, and caulking of the workpiece and the pierce nut 55 are instantaneously performed. After that, the punch 51 is moved to the striker 45 by the restoring tension force of the restoring spring 47.
At the same time, the upper arm extension 49 separates from the workpiece 13. The member 50 and the striker 45 are separated by the tension of the spring 57. After completing the work, return to the original state shown in FIG. Although an example of processing a pierced nut has been shown, it is clear that processing such as drilling, drawing, marking, caulking, etc. can be performed by preparing an appropriate mold. - A high degree of automation is possible because all processes are automatically completed with one discharge. As for the switching mechanism, it is also possible to use manual switching, detection of the position of the coil holder, or detection of the position of the workpiece.

FIG. 6 is a longitudinal sectional view of a modification of the electromagnetic processing machine shown in FIG. 5, viewed from the side. In this case, a 11-coil holder 3 is fixed to a support frame 1.

In the electromagnetic processing apparatus shown in FIG. 5, the position of the coil holder can be appropriately positioned according to the product to be processed, but the difference is that the work is performed at a fixed position. Since positioning of the holder is not necessary especially for the same or similar machining process, the slide part of the general P1NOS machine is removed.

This electromagnetic machining device can perform the same machining as that shown in the embodiment shown in FIG. 5, such as drilling, drawing, caulking, marking ζ1, etc., and is particularly suitable for continuous mass production. For example, when continuously drilling holes in a long workpiece, the workpiece 13 is slid against the die 53 at a constant speed, while the switching mechanism is operated at regular intervals to repeat charging and discharging. For example, it is possible to drill holes at equal intervals.In the one-spring restoring type electromagnetic machining device shown in this example, it is not possible to detect the position of the coil holder and switch, so it is necessary to detect the position of the workpiece or use a timer, etc. Stitch together to make R8+.

Activate R82 alternately 1! so that All machining steps 12- can be automatically completed by performing only 12-times switching operations. Furthermore, since the sliding part of a general press machine can be omitted, the electromagnetic processing device becomes extremely compact.

In this way, the coil holder supported within the support frame, the flat coil provided on the coil holder, the power storage device including the capacitor, and the amount of electricity of the power storage device can be arranged in a desired positional relationship or with respect to the flat coil. The device includes a switching mechanism that supplies current at a desired timing, and causes a current to flow from the power storage device to the flat coil in a desired positional relationship or at a desired timing, thereby electromagnetically repelling the workpiece located below the coil holder. The electromagnetic processing device of the present invention, which is characterized by processing using force, can be put to practical use with a simple configuration, and can be used for drilling, knocking out, drawing, fixing pierced nuts, caulking, marking, etc. It can be processed.

[Brief explanation of the drawing]

FIG. 1 is a front view of the electromagnetic machining apparatus of the present invention, and FIG. 2 is a partially enlarged vertical sectional view of the electromagnetic machining apparatus of FIG. 1, showing different objects to be machined. Fig. 3 is a partially cutaway side view of an embodiment of Manottaau 1 to %jF?, and Fig. 4 is a partially enlarged vertical cross-sectional view of an embodiment of Nokkala 1 to 411! of the device. Fig. 5 shows a partially cutaway front view of a spring restoring type electromagnetic loading device, and Fig. 6 shows a vertical sectional view of the spring restoring type electromagnetic loading device as seen from the side. , Fig. 7 and Fig. 8 are perspective views showing an embodiment of the flat plate-like coil, Fig. 9 is a circuit diagram showing the space between the electricity storage bags, and Fig. 10 is a circuit diagram showing the switching mechanism. (Explanation) 1...Support frame 3...Coil hole 5...
・Flat shape] Illumination 7...] Denser 9...Electricity storage capacity 11...Switching□Horizontal 47...Restoration spring S W +...Charging switch SW2...Discharging switch Patent applicant Co., Ltd. Ama da

Claims (5)

[Claims] (1) supported within a support frame]; a flat coil installed in the coil holder; The device includes a switching mechanism for supplying electric current in a desired positional relationship or at a desired timing, and causes an impulse current to flow from the electricity storage device to the flat coil in a desired positional relationship or at a desired timing, so that the coil holder is positioned below the coil holder. Electromagnetic machining, which is characterized by processing a workpiece using electromagnetic repulsion] - ¥:, Same. (2)] An electromagnetic processing apparatus according to claim 1, in which a flat coil is provided at the lower part of the coil holder. (3) A conductive plate that can be moved up and down is provided below the flat coil provided in the coil holder, a hammer pin is connected below the conductive plate, and the upper mold, which is taken out below the coil holder, is penetrated. The electromagnetic machining apparatus according to claim 1, wherein the upper end of the knockout bin is pushed by the lower end of the hammer bin. (4) A cylinder chamber with a wide upper cross section and a narrow lower cross section is provided in the coil holder, and a piston provided at the upper part of the cylinder chamber is connected to one electric plate that is vertically movable. The electromagnetic machining device according to claim 3, wherein the piston provided at the lower part is connected to a hammer bin, and the stroke of the hammer bin is increased. (5) A striker is provided below the coil holder via a restoring spring, and the flat coil provided at the bottom of the coil holder and the conductive plate provided at the top of the striker are opposed to The electromagnetic machining device according to claim 1, wherein the striker is worked by an electromagnetic repulsive force by shockingly passing a current at a positional relationship or at a desired timing, and is raised again by the restoring force of the restoring spring. .