JPH06218628A - Wire electric discharge device - Google Patents

Abstract

PURPOSE:To improve working efficiency by obviating the necessity of management by an operator by permitting the automatic advance by an automatic wire feeding device, and smoothly recovering a wire electrode after use even in the case where working is carried out by the using the extremely thin wire electrode. CONSTITUTION:A wire electric discharge machining device equipped with a wire taking-out means 15 which is installed in the traveling passage for a wire electrode 1 and takes out the wire electrode 1 used in working, outside the traveling passage is further equipped with a wire taking-up means 23 for taking up the wire electrode 1 transported by the wire taking-out means 15. An adhesion applying means 24 equipped with a coating part 37 for coating the surface of the wire electrode 1 taken up by the wire taking-up means 23 with an adhesive 35 and a fixation part 36 for fixing the wire electrode 1 which is newly transported by the wire taking-out means 15 on the wire taking-up means 23 by the adhesive 35 is installed on the electrode sending-out side of the wire taking-out means 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire electric discharge machine, and more particularly to a wire electric discharge machine having a mechanism for collecting a wire electrode after being subjected to machining.

[0002]

2. Description of the Related Art A technique disclosed in Japanese Utility Model Laid-Open No. 57-75936 is related to a conventional wire electric discharge machining apparatus of this type. FIG. 10 is a schematic configuration diagram showing a conventional wire electric discharge machine. In the figure, 1 is a wire electrode, and this wire electrode 1 is a wire bobbin mounting unit 2
Is wound around the wire bobbin 3 attached to the. 4a, 4b and 4c are the processing device main body 5, respectively.
And a pulley for changing the feeding direction of the wire electrode 1 delivered from the wire bobbin 3. Reference numeral 6 is a brake pulley that is directly connected to the brake 7 and that applies a tension to the wire electrode 1. Reference numeral 8 is a slider that is held so as to be able to move forward and backward in the Z direction with respect to the column 9 of the processing apparatus body 5 and to be fixed.
Reference numeral 0 is an upper wire guide unit fixed to the slider 8. Reference numeral 11 is a lower wire guide unit fixed to a position facing the upper wire guide unit 10 by a lower arm 12 fixed to the column 9, and 13 is a workpiece arranged between the upper and lower wire guide units 10 and 11. Is. The upper and lower wire guide units 10 and 11 are provided with a wire guide (not shown) for slidably supporting the wire electrode 1 above and below the workpiece 13 and for supplying machining power. Power supply (not shown)
It has and.

Reference numeral 14 is a lower pulley provided on the lower arm 12 for changing the traveling direction of the used (processed) wire electrode 1, and 15 is a wire carrying-out means for carrying out the used wire electrode 1. The means 15 includes an arm 19 rotatably attached to the processing apparatus main body 5 by a roller 17 directly connected to the electric motor 16 and a pivot shaft 18, and a pinch roller 20 rotatably attached to the arm 19.
And a spring 21 for pressing the arm 19 downward to press the pinch roller 20 against the roller 17 via the used wire electrode 1. Reference numeral 22 is a wire recovery box for housing the wire electrode 1 carried out from the wire carrying-out means 15.

Next, the operation of the wire electric discharge machine having the above structure will be described. When the workpiece 13 is machined, the wire electrode 1 serving as a tool is delivered from the wire bobbin 3 and guided to the upper wire guide unit 10 via the pulley 4a, the brake pulley 6, the pulley 4b, the brake pulley 6 and the pulley 4c. Get burned. Furthermore, the wire electrode 1
The work piece 13 is held at a predetermined position by the upper wire guide unit 10 and the lower wire guide unit 11, and is sandwiched between the roller 17 and the pinch roller 20 of the wire unloading means 15 via the lower pulley 14 and the electric motor 16
It is carried out by driving the roller 17 by and is collected in the wire collecting box 22 arranged outside the processing apparatus main body 5.

Next, the actual electric discharge machining by this wire electric discharge machine will be described. A machining current is supplied from the machining power source (not shown) to the wire electrode 1 and the workpiece 13, and a discharge is generated between them, so that the wire electrode 1 and the workpiece 13 are partially blown away. At this time, as described above, the wire electrode 1 is continuously supplied and collected, so that the wire electrode 1 is not broken. Further, the workpiece 13 is supported by an XY cross table (not shown) and is driven in an arbitrary horizontal direction with respect to the wire electrode 1 to be cut into an arbitrary shape.

[0006]

SUMMARY OF THE INVENTION In the conventional wire electric discharge machine as described above, in order to perform fine machining, normally,
It was processed using an ultrafine wire wire electrode having a diameter of 0.1 mm or less. However, in the case of electrical discharge machining using this ultrafine wire electrode, the used wire electrode after machining is wrapped around the roller or pinch roller of the wire unloading means, or is pinched by the roller and pinch roller. The wire electrode was easily cut, and the operator had to constantly manage it.
Further, it is necessary to finely adjust the pressing force of the pinch roller, and it has been extremely difficult to improve the machining efficiency in the electric discharge machining using the ultrafine wire electrode. For this reason, even in the electric discharge machine equipped with the wire automatic feeder, the automation cannot be performed.

Therefore, the present invention has been made in order to solve the above-mentioned problems, and it is possible to smoothly collect a used wire electrode even when processing using an ultrafine wire electrode, and An object of the present invention is to provide a wire electric discharge machining apparatus that can improve machining efficiency of fine machining using electrodes.

[0008]

According to a first aspect of the present invention, there is provided a wire electric discharge machine, which is provided in a wire electrode feed path, and which carries out the processed wire electrode to the outside of the wire feed path. Wire winding means for winding the wire electrode discharged by the wire discharging means, and a wire electrode newly provided to the wire winding means by the wire discharging means, the wire electrode being provided on the wire electrode sending side of the wire discharging means. And a joining imparting means for joining.

According to a second aspect of the present invention, there is provided a wire electric discharge machining apparatus, which is provided in a wire electrode feeding path and carries out the wire electrode that has been subjected to machining to the outside of the feeding path, and a wire unloading means. And a wire winding means for winding the wire electrode that has been wound up, and a wire electrode that is provided on the wire electrode delivery side of the wire unloading means and that is newly carried out by the wire unloading means and the wire winding means are in contact with each other. And a detection means for detecting.

According to a third aspect of the present invention, there is provided a wire electric discharge machining apparatus, which is provided in a wire feeding path, and carries out the wire electrode used for machining out of the wire feeding path and a wire carrying-out means. And a wire winding means for winding the formed wire electrode, and a switching means for controlling the tension of the wire electrode on one side of the wire unloading means or the wire winding means according to the wire diameter of the wire electrode and for opening the other on the other side. And is equipped with.

[0011]

In the wire electric discharge machine according to the first aspect of the present invention, the wire electrode newly carried out by the wire carrying-out means is wound on the wire winding means for winding the used wire electrode carried out from the wire carrying-out means. Since the joining means is provided on the wire electrode delivery side of the carry-out means, the wire electrode can be automatically joined to the wire winding means, and the used wire electrode can be wound and collected smoothly.

In the wire electric discharge machine according to the second aspect of the present invention, the wire winding means for winding the used wire electrode carried out from the wire carrying-out means and the wire electrode newly carried out by the wire carrying-out means are in contact with each other. Since this is detected by the detection means provided on the wire electrode sending side of the wire unloading means, it can be automatically detected that the wire electrode has come into contact with the wire winding means, and the used wire electrode winding Collection and collection can be done quickly.

In the wire electric discharge machining apparatus of the third aspect of the invention, wire unloading means for unloading the used wire electrode,
Alternatively, one of the wire winding means for winding the wire electrode carried out by the wire carrying-out means controls the tension of the wire electrode in accordance with the wire diameter of the wire electrode and the other means is opened. Therefore, the used wire electrode can be wound and collected while appropriately controlling the tension of the wire electrode according to the wire diameter of the wire electrode.

[0014]

Embodiments of the present invention will be described below. <First Embodiment> FIG. 1 is a schematic configuration diagram showing a wire electric discharge machining apparatus according to a first embodiment of the present invention. In the figure, the same reference numerals and symbols as those of the above-mentioned conventional example indicate the same or corresponding components as those of the above-mentioned conventional example.

In FIG. 1, 23 is a wire unloading means 15
The wire winding means is provided on the wire feeding side of the wire, and 24 is a joining imparting means provided above the wire winding means.

FIG. 2 is an enlarged configuration diagram showing a schematic configuration of the wire winding means 23 and the joining applying means 24 of the wire electric discharge machine shown in FIG. As shown, the wire winding means 23 is
A winding bobbin 25 for winding and collecting the wire electrode 1 carried out by the wire carrying-out means 15 and a driving means 26 for rotationally driving the winding bobbin 25 are provided and attached to the processing apparatus body 5. The joining imparting means 24 includes the guide rod 30 and the air cylinder 3 attached to the processing apparatus body 5.
1 and the guide rod 30 to the air supply / discharge port 32 of the air cylinder 31.
It is provided with a block 33 that moves up and down by air supply and discharge from a and 32b. The block 33 removes the adhesive 35 injected from the injection port 34 and the adhesive 35 by air from the air supply / discharge port 32c. Fixed part 36 of block 33
From a piston 38 pushed out from an application part 37 having several holes bored in the approximate center and a groove connecting the holes, a spring 39 pushing up this piston 38, and a bearing 40 for moving the block 33 up and down. It is configured.

FIG. 3 is a front view showing a state in which the wire electrode 1 carried out from the wire carrying-out means 15 is bonded to the wire winding means 23 by the bonding applying means 24, and FIG. 4 is a side view of FIG. 3 seen from the side. Since the respective constituent parts are the same as those in FIG. 2, the description thereof will be omitted.

Next, the operation of the wire electric discharge machine which is the first embodiment of the present invention shown in FIGS. 1 to 4 will be described. Since the method of electric discharge machining is the same as that shown in the conventional example, the description thereof will be omitted, and in particular, the recovery method when using a wire electrode of an ultrafine wire will be described.

The wire electrode 1 is stretched in the same manner as in the conventional apparatus, and the used wire electrode 1 ejected from between the roller 17 and the pinch roller 20 of the wire unloading means 15 reaches the wire winding means 23. Until then, the wire electrode 1 is carried out by the wire carrying-out means 15. At this time, the delivery time of the wire electrode 1 is detected to determine that the wire electrode 1 has reached the wire winding means 23.

Next, the air cylinder 3 of the joining applying means 24
Air is supplied from the air supply / exhaust port 32a of No. 1 and the air supply / exhaust port 3
By exhausting the air from 2b, the block 33 is lowered along the guide rod 30. Then, as shown in FIG. 3 and FIG.
At the same time, it moves to a position where it is pressed against the winding bobbin 25. In this state, air is supplied to the air supply / exhaust port 32c of the block 33 for a certain period of time, the piston 38 is moved, and the adhesive 35 is extruded from the application part 37 to the winding bobbin 25, thereby winding the wire electrode 1. It is joined to the take-up bobbin 25.

At this time, as shown in FIG. 4, the adhesive 35 extruded from several holes of the coating part 37 spreads in the groove of the coating part 37 and is perpendicular to the winding direction of the winding bobbin 25. It is applied linearly. Therefore, the wire electrode 1 can be fixed at any position on the winding surface of the winding bobbin 25.

Next, when the air supply to the block 33 is stopped, the piston 38 moves upward due to the urging force of the spring 39, and the application of the adhesive 35 is also stopped. In this state, the air cylinder 31 raises the block 33 to a predetermined position in the reverse operation to the above. Thus, the operation of bonding the wire electrode 1 to the wire winding means 23 by the bonding applying means 24 is completed. After that, the winding bobbin 25 is rotated by the driving means 26 together with the wire unloading means 15, and the wire electrode 1 is wound around the wire winding means 23 to collect the used wire electrode 1.

As described above, the wire electric discharge machining apparatus according to the present embodiment is provided in the feeding path of the wire electrode 1, and the wire unloading means 15 for unloading the wire electrode 1 used for machining out of the feeding path, Wire winding means 23 having a winding bobbin 25 for winding the wire electrode 1 carried out by the wire carrying-out means 15 and a driving means 26 for rotationally driving the winding bobbin 25, and a wire electrode delivery side of the wire carrying-out means 15. And a wire electrode 1 wound up by the wire winding means 23 and applying an adhesive 35 to the surface of the wire electrode 1, and the wire electrode 1 newly carried out by the wire carrying-out means 15 is adhered to the adhesive 35. Wire winding means 2
3 is provided with the joining imparting means 24 having the fixing portion 36 for fixing to 3.

That is, the wire electric discharge machine of this embodiment is
The used wire electrode 1 delivered from the wire unloading means 15 is provided with a coating part 37 for applying an adhesive 35 and a fixing part 36 for fixing the wire electrode 1 to the wire winding means 23 with the adhesive 35. It is fixed to the wire winding means 23 by the joining imparting means 24 and wound and collected.

Therefore, since the wire electrode 1 can be automatically bonded to the wire winding means 23 by the bonding applying means 24 and the used wire electrode can be wound and collected smoothly, automation by the wire automatic feeder can be promoted. Further, even when processing is performed using the ultrafine wire wire electrode, the wire electrode 1 is not wrapped around the wire conveying means 15, management by a worker is unnecessary, and processing efficiency is improved.

<Second Embodiment> FIG. 5 is a schematic configuration diagram showing a schematic configuration of a wire winding means and a joining applying means in a wire electric discharge machining apparatus according to a second embodiment of the present invention. Other configurations are as follows. Since it is the same as the wire electric discharge machine of the first embodiment, its explanation is omitted. In the figure, the same reference numerals and symbols as those in the first embodiment denote the same or corresponding components as those of the first embodiment.

In the figure, 23 is a wire winding means provided on the wire electrode delivery side of the wire unloading means 15, and 24a.
Is a joining imparting means provided above the wire winding means 23. The configurations of the wire winding means 23, the guide rods 30 of the joining imparting means 24a, and the air cylinder 31 are the same as those in the above-described first embodiment shown in FIG.

Reference numeral 33a is a block which moves up and down by the air cylinder 31, and 41a and 41b are belt wheels 42.
a is a reel rotatably attached to the block 33a to which a and 42b are attached, 43 is a belt for rotating the reels 41a and 41b in the same direction and the same number of revolutions, and 44 is a mount on which one side of the double-sided adhesive tape 45 is attached. , 47 are mounting portions for winding the double-sided adhesive tape 45 from one reel 41a wound around the pulley 46 to the other reel 41b. Reference numeral 48 is a cutter for cutting the double-sided adhesive tape 45, 49a is an air supply / discharge port for moving the cutter 48 forward by air, 50a is a spring for moving the cutter 48 backward, and 51 is a cutter 48, an air supply / discharge port 49a and a spring. 5
It is a cutting part consisting of 0a. 52 is a wire unloading means 1
5, a pressing plate that presses the wire electrode 1 carried out by 5 onto the winding bobbin 25, 49b is an air supply / exhaust port for moving the pressing plate 52 forward by air, 50b is a spring for moving the pressing plate 52 backward, and 53 is Presser plate 52 and air supply / discharge port 49b
And a spring 50b. The block 33a is composed of the mounting portion 47, the cutting portion 51, and the fixing portion 53.

Next, the operation of the wire electric discharge machining apparatus according to the second embodiment of the present invention shown in FIG. 5 will be described. In addition,
Also in the present embodiment, the method of electric discharge machining is the same as that shown in the conventional example, so the description thereof is omitted.
In particular, a recovery method when using an ultrafine wire electrode will be described.

First, before the wire electrode 1 is stretched, air is supplied from the air supply / exhaust port 32a of the air cylinder 31 of the joining imparting means 24a and exhausted from the air supply / exhaust port 32b, so that the block 33a is opened. It is moved down along the guide rod 30 and moved to a position where the double-sided adhesive tape 45 in the pulley 46 portion presses the winding bobbin 25.

In this state, the drive means 26 drives the take-up bobbin 25 to rotate once counterclockwise, so that the double-sided adhesive tape 45 is separated from the mount 44 and the take-up bobbin 2 is moved.
5, and the mount 44 is wound around the reel 41a and collected on the reel 41b.

Next, air is supplied from the air supply / discharge port 49a for a certain period of time, the cutter 48 is advanced, and the double-sided adhesive tape 45 is cut. After the air is stopped, the cutter 48 is retracted by the urging force of the spring 50a. And the air cylinder 31
As a result, the block 33a is raised to a predetermined position by the operation reverse to the above.

Thereafter, the wire electrode 1 is stretched in the same manner as in the conventional apparatus, and the used wire electrode 1 ejected from between the roller 17 of the wire unloading means 15 and the pinch roller 20 is fed to the wire winding means 23. Wire unloading means 1 until reaching
The wire electrode 1 is carried out by 5. At this time, the delivery time of the wire electrode 1 is detected, and it is determined that the wire electrode 1 has arrived.

Next, air is supplied to the air supply / discharge port 49b,
The block 33a is lowered by the air cylinder 31 again while the pressing plate 52 is moved forward, and the pressing plate 52 moves to the take-up bobbin 2
Move 5 to the pressing position. Then, the wire electrode 1 is fixed to the double-sided adhesive tape 45 wound around the winding bobbin 25. Then, the air to the air supply / discharge port 49b is stopped,
The pressing plate 52 is retracted by the biasing force of the spring 50b, and the block 33a is raised by the air cylinder 31. Thus, the operation of joining the wire electrode 1 to the wire winding means 23 by the joining applying means 24a is completed. After this,
The winding bobbin 25 is rotated by the driving means 26 together with the wire unloading means 15 to move the wire electrode 1 to the wire winding means 2.
The used wire electrode 1 is wound around 3 and collected.

As described above, the wire electric discharge machining apparatus according to the present embodiment is provided in the feeding path of the wire electrode 1, and the wire unloading means 15 for unloading the wire electrode 1 subjected to the machining out of the feeding path, and the wire unloading means 15. Wire winding means 23 having a winding bobbin 25 for winding the wire electrode 1 carried out by the wire carrying-out means 15 and a driving means 26 for rotationally driving the winding bobbin 25, and a wire electrode delivery side of the wire carrying-out means 15. The wire electrode 1 wound on the wire winding means 23 by the attachment part 47 for mounting the double-sided adhesive tape 45 on the outer periphery of the surface, the cutting part 51 for cutting the double-sided adhesive tape 45, and the wire unloading means 15. It is provided with a joining applying means 24a having a fixing portion 53 for fixing the newly carried out wire electrode 1 to the double-sided adhesive tape 45.

That is, the wire electric discharge machine of this embodiment is
The used wire electrode 1 delivered from the wire unloading means 15 is fixed to the double-sided adhesive tape 45 by a mounting portion 47 for mounting the double-sided adhesive tape 45, a cutting portion 51 for cutting the double-sided adhesive tape 45, and the wire electrode 1. It is fixed to the wire winding means 23 by the joining imparting means 24a provided with the fixing portion 53 to be wound and collected.

Therefore, the wire applying means 24a can automatically bond the wire electrode 1 to the wire winding means 23,
Since the used wire electrode can be wound and collected, automation by the automatic wire feeder can be promoted. Further, even when processing is performed using the ultrafine wire wire electrode, the wire electrode 1 is not wrapped around the wire conveying means 15, management by a worker is unnecessary, and processing efficiency is improved.

<Third Embodiment> FIG. 6 is a schematic configuration view showing a schematic configuration of a wire winding means and a joining applying means in a wire electric discharge machining apparatus according to a third embodiment of the present invention. Other configurations are as follows. Since it is the same as the wire electric discharge machine of each of the above-mentioned embodiments, its explanation is omitted. In the figure, the same reference numerals and symbols as those of the above-mentioned respective embodiments indicate the same or corresponding constituent parts as those of the above-mentioned respective embodiments.

In the figure, 23 is a wire winding means provided on the wire electrode delivery side of the wire carrying-out means 15, and 24b.
Is a joining imparting means provided above the wire winding means 23. The structure of the wire winding means 23 and the guide rods 30 of the joining imparting means 24b and the air cylinder 31 are the same as those of the above-described first embodiment shown in FIG.

Reference numeral 33b is a block which moves up and down by the air cylinder 31, 35a is an instant adhesive injected into the block 33b from the injection port 34a, and 37a is a fixing portion 36.
Is a coating portion having several holes bored at substantially the center of the groove and a groove connecting the holes, 60 is a piston, and is attached to a position where a pressing plate portion 60a at the tip of the piston 60 closes the coating portion 37a by a spring 61. Has been. Further, the length of the pressing portion 60b at the tip of the piston 60 is such that the pressing plate portion 60a is the coating portion 37a.
The length is such that it protrudes from the fixed portion 36 in the state where it is closed. Reference numeral 62 denotes an air supply / discharge port for supplying and discharging air, and by supplying air, the piston 60 is moved upward.

Next, the operation of the wire electric discharge machining apparatus according to the third embodiment of the present invention shown in FIG. 6 will be described. In addition,
Also in the present embodiment, the method of electric discharge machining is the same as that shown in the conventional example, so the description thereof is omitted.
In particular, a recovery method when using an ultrafine wire electrode will be described.

First, the wire electrode 1 is stretched in the same manner as in the conventional apparatus, and the used wire electrode 1 ejected from between the roller 17 of the wire unloading means 15 and the pinch roller 20 reaches the wire winding means 23. Until then, the wire electrode 1 is carried out by the wire carrying-out means 15. At this time, the wire winding means 2 is detected by detecting the delivery time of the wire electrode 1.
It is determined that the wire electrode 1 has arrived at 3.

Next, the block 33b is lowered by the air cylinder 31 of the joining applying means 24b, and the block 33b is moved.
The fixing part 36 is moved together with the wire electrode 1 to a position where it is pressed against the winding bobbin 25. At this time, the pressing portion 60b at the tip of the piston 60 is first pressed against the winding bobbin 25 to move the piston 60 upward. Then, by forming a predetermined gap between the pressing plate portion 60a and the coating portion 37a, the instantaneous adhesive 35a flows out from several holes of the coating portion 37a. Since the instant adhesive 35a spreads in the groove of the applying portion 37a, it is linearly applied in the direction perpendicular to the winding direction of the winding bobbin 25. Therefore, the wire electrode 1 can be fixed at any position on the winding surface of the winding bobbin 25.

Next, the air cylinder 31 is used to block the block 3.
When 3b is raised to a predetermined position in the reverse operation to the above, the pressing portion 60b separates from the winding bobbin 25, and the pressing plate portion 60a closes the coating portion 37a by the urging force of the spring 61. Thus, the operation of stopping the flow of the instantaneous adhesive agent 35a and joining the wire electrode 1 to the wire winding means 23 by the joining applying means 24b is completed.

Thereafter, the winding bobbin 25 is rotated by the driving means 26 together with the wire unloading means 15 to wind the wire electrode 1 around the wire winding means 23 and collect the used wire electrode 1.

As described above, the wire electric discharge machining apparatus according to the present embodiment is provided in the feeding path of the wire electrode 1, and the wire unloading means 15 for unloading the wire electrode 1 used for machining out of the feeding path, Wire winding means 23 having a winding bobbin 25 for winding the wire electrode 1 carried out by the wire carrying-out means 15 and a driving means 26 for rotationally driving the winding bobbin 25, and a wire electrode delivery side of the wire carrying-out means 15. And a wire electrode 1 newly carried out by the wire carrying-out means 15 is applied to the surface of the wire electrode 1 wound on the wire winding means 23 by applying an instantaneous adhesive agent 35a to the surface of the wire electrode 1. And a joining imparting means 24b having a fixing portion 36 that is fixed to the wire winding means 23 by the agent 35a.

That is, the wire electric discharge machine of this embodiment is
A coating portion 37a for coating the used wire electrode 1 delivered from the wire unloading means 15 with the instant adhesive 35a.
And a fixing part 36 for fixing the wire electrode 1 to the wire winding means 23 with the instant adhesive 35a, and the wire applying means 24b is fixed to the wire winding means 23 and collected by winding.

Therefore, the wire applying means 24b can automatically bond the wire electrode 1 to the wire winding means 23,
Since the used wire electrode can be wound and collected, automation by the automatic wire feeder can be promoted. Further, even when processing is performed using the ultrafine wire wire electrode, the wire electrode 1 is not wrapped around the wire conveying means 15, management by a worker is unnecessary, and processing efficiency is improved.

<Fourth Embodiment> FIG. 7 is a schematic diagram showing a wire electric discharge machining apparatus according to a fourth embodiment of the present invention. In the figure, the same reference numerals and symbols as those in the above-mentioned conventional example and each embodiment indicate the same or corresponding components as those of the above-mentioned conventional example and each example.

In the figure, reference numeral 23 is a wire winding means provided on the wire electrode delivery side of the wire unloading means 15, and 24 is a joining applying means provided above the wire winding means 23. To the configuration described in the third embodiment. Reference numeral 65 designates a power supply terminal insulated and attached to the lower arm 12 so as to come into contact with the wire electrode 1, 66 designates an insulating attachment to the processing apparatus main body 5 and contacts the take-up bobbin 25, and the wire electrode of the take-up bobbin 25. A feeding block 67 for feeding power to the winding surface of No. 1 is an electrical discriminating circuit. And
The winding bobbin 25 of the wire winding means 23 and the driving means 26 are insulated and attached.

Next, the operation of the wire electric discharge machine according to the fourth embodiment of the present invention shown in FIG. 7 will be described. In addition,
Also in the present embodiment, the method of electric discharge machining is the same as that shown in the conventional example, so the description thereof is omitted.
In particular, a recovery method when using an ultrafine wire electrode will be described.

First, the wire electrode 1 is stretched in the same manner as in the conventional apparatus, and the used wire electrode 1 ejected from between the roller 17 of the wire unloading means 15 and the pinch roller 20 reaches the wire winding means 23. Until then, the wire electrode 1 is carried out by the wire carrying-out means 15. At this time, when the wire electrode 1 carried out from the wire carrying-out means 15 reaches the wire winding means 23 and comes into contact with the wire winding means 23, the power supply terminal 65 and the power feeding block 6 are connected.
Electricity flows between 6 and a contact is detected by the electrical discrimination circuit 67. If the wire electrode 1 is not contacted within a fixed time, the wire electrode 1 is cut and the recovery operation is performed again until it contacts. Since the subsequent recovery operation is the same as the operation shown in FIG. 1 of the first embodiment, the description thereof is omitted here.

As described above, the wire electric discharge machining apparatus of the present embodiment is provided in the feeding path of the wire electrode 1, and the wire carrying-out means 15 for carrying out the processed wire electrode 1 to the outside of the feeding path; Wire winding means 23 having a winding bobbin 25 for winding the wire electrode 1 carried out by the wire carrying-out means 15 and a driving means 26 for rotationally driving the winding bobbin 25, and a wire electrode delivery side of the wire carrying-out means 15. , And the wire electrode 1 and the wire winding means 23, which are newly carried out by the wire carrying-out means 15.
The electric discriminating circuit 67 (detecting means) for detecting the contact with the take-up bobbin 25 by the flow of electricity between the power supply terminal 65 and the power supply block 66.

That is, the wire electric discharge machine of this embodiment is
The electrical discriminating circuit 67 (detecting means) detects whether or not the used wire electrode 1 delivered from the wire unloading means 15 has come into contact with the wire winding means 23. Therefore, the contact of the wire electrode 1 with the wire winding means 23 can be automatically detected, and the used wire electrode can be wound and collected quickly, so that the automatic wire feeding device using the ultrafine wire electrode can automate the operation. Can be promoted.

<Fifth Embodiment> FIG. 8 is a schematic diagram showing a wire electric discharge machining apparatus according to a fifth embodiment of the present invention. In the figure, the same reference numerals and symbols as those in the above-mentioned conventional example and each embodiment indicate the same or corresponding components as those of the above-mentioned conventional example and each example.

In the figure, 23 is a wire winding means provided on the wire electrode delivery side of the wire unloading means 15 and having a winding bobbin 25 and a driving means 26 for rotationally driving the winding bobbin 25, and 24 is a wire. It is a joining imparting means provided above the winding means 23, and has the structure described in the first to third embodiments. Reference numeral 7a is an electric motor directly connected to the brake pulley 6, 70 is a cylinder attached to the lower arm 12, and 71 is a control circuit for detecting and controlling the rotational speeds of the electric motor 7a, the driving means 26, and the electric motor 16.

FIG. 9 is an enlarged explanatory view showing a state in which the roller 17 and the pinch roller 20 of the wire unloading means 15 of the wire electric discharge machine shown in FIG. 8 are opened. As shown in the figure, the cylinder 70 includes a piston 72 located below the arm 19 on the opposite side of the pivot shaft 18, an air supply / discharge port 73 for supplying and discharging air for moving the piston 72 upward, and a piston 72. And a spring 74 for urging 72 to move it downward.

Next, the operation of the wire electric discharge machine which is the fifth embodiment of the present invention shown in FIGS. 8 and 9 will be described. In the present embodiment as well, the electric discharge machining method is the same as that shown in the conventional example, and therefore its explanation is omitted, and in particular, the method for collecting the wire electrode 1 and the method for controlling the tension will be explained.

The wire electrode 1 having a diameter of 0.1 mm or more is stretched in the same manner as in the conventional apparatus, and the wire unloading means 15 is used.
The used wire electrode 1 emerging from between the roller 17 and the pinch roller 20 is collected in the wire collecting box 22 arranged outside the processing apparatus body 5. In this case, the method of controlling the tension of the wire electrode 1 is to rotate the electric motor 16 at a constant speed, detect the rotational speed of the electric motor 16 by the control circuit 71, and detect the difference between the rotational speed of the electric motor 7a and the rotational speed of the electric motor 16. The tension of the wire electrode 1 generated by is calculated, and the electric current for giving the rotation speed to the electric motor 7a is controlled so as to reach the set value. In this case, the driving means 26 remains stopped.

On the other hand, stretching of the ultrafine wire electrode 1 having a diameter of 0.1 mm or less is performed in the same manner as in the conventional device. In this case,
The used wire electrode 1 coming out from between the roller 17 and the pinch roller 20 of the wire carrying-out means 15 is the wire winding means 2
Until the wire electrode 1 is reached, the wire electrode 1 is carried out by the wire carrying-out means 15, and the wire electrode 1 is joined to the wire winding means 23 by the joining imparting means 24 and collected. Since the collecting operation is the same as that of the first embodiment shown in FIG. 2, its explanation is omitted here.

In this case, the method of controlling the tension of the wire electrode 1 is as follows. After the wire electrode 1 is joined to the wire winding means 23, air is supplied from the air supply / discharge port 73 of the cylinder 70 and the piston 72 is moved. By moving the arm 19 upward and pushing up the arm 19, the pinch roller 20 is separated from the roller 17, and the wire electrode 1 is released from the wire unloading means 15.

In this state, the drive means 26 is rotated at a constant speed, the control circuit 71 detects the rotation speed of the drive means 26, and the wire electrode 1 generated by the difference between the rotation speed of the electric motor 7a and the rotation speed of the drive means 26 is detected. Is calculated, and the electric current for giving the rotation speed to the electric motor 7a is controlled so as to reach the set value. In this case, the electric motor 16 remains stopped. Thus, the recovery method and the tension control method of the wire electrode 1 are automatically changed according to the wire diameter of the wire electrode 1.

As described above, the wire electric discharge machining apparatus according to the present embodiment is provided in the feeding path of the wire electrode 1, and the wire unloading means 15 for unloading the wire electrode 1 subjected to the machining out of the feeding path, and the wire unloading means 15. Wire winding means 23 having a winding bobbin 25 for winding the wire electrode 1 carried out by the wire carrying-out means 15 and a drive means 26 for rotationally driving the winding bobbin 25, and the wire diameter of the wire electrode 1 depending on the wire diameter. The wire unloading means 15 or the wire winding means 23 is provided with a switching means for controlling the tension of the wire electrode 1 and the other for opening the wire electrode 1. That is, the wire electric discharge machine of this embodiment collects the wire electrode 1 while controlling the tension of the wire electrode 1 by the switching means according to the wire diameter of the wire electrode 1 to be used by the switching means. However, the other is to be opened.

Therefore, the used wire electrode 1 can be wound and collected while appropriately controlling the tension of the wire electrode 1 according to the wire diameter of the wire electrode 1.
It is possible to prevent the wire electrode 1 from slipping in such a case, and it is possible to promote automation by the wire automatic supply device. Moreover, even when the ultrafine wire electrode is used, the wire electrode 1 is not wound around the wire conveying means 15 and the wire electrode 1 is not cut by the pinching of the roller 17 and the pinch roller 20. Management becomes unnecessary and processing efficiency improves.

By the way, in the first to third embodiments, the adhesive 35, the instant adhesive 35a, and the double-sided adhesive tape 45 are used as the joining imparting means 24, 24a, 24b. It is also possible to adopt the welding method by.

[0066]

As described above, the wire electric discharge machining apparatus according to the first aspect of the present invention includes the wire unloading means, the wire winding means, and the joining imparting means, and the used wire unloading means is used. The wire electrode is wound by winding the wire electrode by winding the wire electrode, which is newly carried out by the wire carrying-out means, by bonding means provided at the wire electrode sending side of the wire carrying-out means. Since it can be automatically joined to the take-up means and the wound wire electrode can be smoothly wound and collected, the automation by the automatic wire feeder can be promoted, and even when the ultrafine wire wire electrode is used, the wire electrode becomes the wire conveying means. Since it does not wrap around, there is no need for operator control, and processing efficiency is improved.

The wire electric discharge machine according to the invention of claim 2 is
A wire take-out means, a wire take-up means, and a detection means, and a wire take-up means for taking up the used wire electrode carried out from the wire carry-out means and a wire electrode newly carried out by the wire carry-out means. By detecting the contact with the detection means provided on the wire electrode sending side of the wire unloading means, it can be automatically detected that the wire electrode has come into contact with the wire winding means, and the used wire electrode can be wound up. Since collection can be done quickly, automation can be promoted by an automatic wire feeder using an ultrafine wire electrode.

A wire electric discharge machine according to the invention of claim 3 is
One of the wire unloading means for unloading the used wire electrode or the wire unloading means for winding up the wire electrode unloading the used wire electrode, the wire unloading means, the wire winding means, and the switching means. By controlling the tension of the wire electrode according to the wire diameter of the wire electrode and opening the other means, the tension of the wire electrode is appropriately controlled according to the wire diameter of the wire electrode Since it is possible to take up and collect the wire, it is possible to prevent the wire electrode from slipping in the wire take-up means, etc., and to promote automation by the automatic wire feeder, and even when using the ultrafine wire wire electrode, the wire electrode can be used as the wire conveying means. Since it is not wrapped around the wire and the wire electrode is not cut, the operator does not need to manage the wire electrode, and the processing efficiency is improved.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing a wire electric discharge machine that is a first embodiment of the present invention.

FIG. 2 is an enlarged configuration diagram showing a schematic configuration of a wire winding means and a joining imparting means of the wire electric discharge machining apparatus of FIG.

FIG. 3 is a front view showing a state in which the wire electrode carried out from the wire carrying-out means of the wire electric discharge machining apparatus of FIG. 1 is joined to the wire winding means by the joining giving means.

FIG. 4 is a side view showing a state in which the wire electrode carried out from the wire carrying-out means of the wire electric discharge machining apparatus of FIG. 1 is joined to the wire winding means by the joining giving means.

FIG. 5 is a schematic configuration diagram showing a schematic configuration of a wire winding means and a joining applying means in a wire electric discharge machine which is a second embodiment of the present invention.

FIG. 6 is a schematic configuration diagram showing a schematic configuration of a wire winding means and a joining applying means in a wire electric discharge machine which is a third embodiment of the present invention.

FIG. 7 is a schematic configuration diagram showing a wire electric discharge machine that is a fourth embodiment of the present invention.

FIG. 8 is a schematic configuration diagram showing a wire electric discharge machine that is a fifth embodiment of the present invention.

9 is an enlarged explanatory view showing a state in which a roller and a pinch roller of a wire carry-out means of the wire electric discharge machine shown in FIG. 8 are opened.

FIG. 10 is a schematic configuration diagram showing a conventional wire electric discharge machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wire electrode 2 Wire bobbin mounting unit 13 Workpiece 15 Wire unloading means 22 Wire collection box 23 Wire winding means 24, 24a, 24b Bonding means 35 Adhesive 35a Instant adhesive 36 Fixing part 37, 37a Coating part 45 Double-sided adhesive Tape 47 Attachment part 51 Cutting part 53 Fixed part 67 Electrical discrimination circuit

Claims (3)

[Claims] 1. A wire unloading unit that is provided in a wire electrode feeding path and unloads the processed wire electrode; a wire winding unit that winds the wire electrode unloaded from the wire unloading unit; Disposed between the unloading means and the wire winding means,
A wire electric discharge machine, comprising: a joining applying means for joining the wire electrode newly carried out from the wire carrying-out means to the wire winding means. 2. A wire unloading device that is provided in a wire electrode feed path and unloads the wire electrode that has been subjected to processing, a wire winding device that winds the wire electrode unloaded by the wire unloading device, and the wire. Disposed between the unloading means and the wire winding means,
A wire electric discharge machine comprising: a wire electrode newly carried out from the wire carrying-out means and a detection means for detecting that the wire winding means is in contact with each other. 3. A wire unloading device that is provided in a wire electrode feeding path and unloads the wire electrode that has been subjected to processing, a wire winding device that winds the wire electrode unloaded by the wire unloading device, and the wire. Depending on the wire diameter of the electrode,
A wire electric discharge machine comprising: one of the wire unloading means and the wire winding means, and a switching means for controlling the tension of the wire electrode and for making the wire electrode open.