KR20170030326A - Electrode for electrical discharge machining apparatus and electrical discharge machining apparatus using the same - Google Patents

Electrode for electrical discharge machining apparatus and electrical discharge machining apparatus using the same Download PDF

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Publication number
KR20170030326A
KR20170030326A KR1020150127774A KR20150127774A KR20170030326A KR 20170030326 A KR20170030326 A KR 20170030326A KR 1020150127774 A KR1020150127774 A KR 1020150127774A KR 20150127774 A KR20150127774 A KR 20150127774A KR 20170030326 A KR20170030326 A KR 20170030326A
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KR
South Korea
Prior art keywords
electrode
discharge
discharge machining
machining
electric discharge
Prior art date
Application number
KR1020150127774A
Other languages
Korean (ko)
Inventor
이혜문
정수호
Original Assignee
한국기계연구원
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Publication date
Application filed by 한국기계연구원 filed Critical 한국기계연구원
Priority to KR1020150127774A priority Critical patent/KR20170030326A/en
Publication of KR20170030326A publication Critical patent/KR20170030326A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
    • B23H7/22—Electrodes specially adapted therefor or their manufacture
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
    • B23H7/36—Supply or regeneration of working media
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/02—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding
    • H05K3/08—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding the conductive material being removed by electric discharge, e.g. by spark erosion

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

The present invention relates to an electrode for electric discharge machining and an electric discharge machining apparatus, which comprises an electrode body on which a discharge liquid discharge line is formed, And a discharge liquid discharge device for selectively discharging the discharge liquid.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrode for an electric discharge machining and an electric discharge machining apparatus using the same,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrode for electric discharge machining and an electric discharge machining apparatus, and more particularly to an electric discharge machining apparatus for machining a surface of a workpiece using a discharge phenomenon generated between the workpiece and the electrode.

Generally, in order to pattern a metal layer formed on a flexible substrate such as an FPCB, a dry film having a photosensitive property is closely contacted with a hot roller on a pretreated flexible substrate, followed by exposure using a mask A pattern was formed by etching the metal layer of the unexposed area by a wet method.

However, the patterning method according to the conventional method requires several steps from the adhesion of the dry film to the final development step, and since the respective steps are intermittently performed, it is not easy to perform the continuous operation.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a method and apparatus for continuously patterning a metal layer formed on a flexible substrate using an electric discharge machining technique and a roll- And an object of the present invention is to provide an electric discharge machining apparatus and an electric discharge machining method which can greatly reduce the process cost and improve the productivity. However, these problems are exemplary and do not limit the scope of the present invention.

According to an aspect of the present invention, there is provided an electrode for electric discharge machining, including: an electrode body on which a discharge liquid discharge line is formed; and a discharge electrode provided on at least a part of the electrode body, And a discharge liquid discharge device for discharging the discharge liquid.

The discharge liquid discharging device may include a ball-shaped rotating body installed so that the discharge fluid is discharged and applied to a surface of the object in a rolling contact with the object, so that the object can be processed.

The discharge liquid discharging device is installed in an empty space of the electrode body so as to prevent the discharge liquid from being discharged due to the restoring force of the elastic member or the discharge liquid discharge device itself normally installed in the clearance space, And an electrode tip having a T-shaped cross section which is formed so as to rise above the restoring force of the elastic member or the discharge liquid discharging device itself as it comes into contact with an object and to discharge the discharge liquid to allow the object to be processed.

The electrode body may include an electrode tube portion in which the discharge liquid discharge line is formed and has a pipe shape and a discharge device accommodating portion formed at the tip of the electrode tube portion to receive the discharge liquid discharge device.

According to another aspect of the present invention, there is provided an electric discharge machining apparatus including a transfer device for transferring an object, an electrode for electric discharge machining according to any one of claims 1 to 5, And a power applying device for applying power to the object and the electrode for electric discharge machining so that the object can be electrically contacted and a pattern can be formed by electrical discharge machining.

The transfer device may be a roll-to-roll device that is installed so that the object is transferred from the first roller provided on one side to the second roller provided on the other side to perform the continuous manufacturing process.

The conveying device may be a continuous moving device that is installed to convey the object by a conveyor device installed from one side to the other side to perform a continuous manufacturing process.

The object may be a flexible substrate on which a wiring layer is formed, and the power applying apparatus may be a second roll electrode or a brush electrode which is in electrical contact with the wiring layer.

According to the embodiment of the present invention as described above, the electric discharge machining apparatus and the electric discharge machining method are capable of continuously patterning the metal layer formed on the flexible substrate by using the discharge machining technique and the roll-to-roll process without using the exposure and etching processes The process time and the process cost can be greatly reduced, the productivity can be improved, and the mass production can be effected in a continuous process. Of course, the scope of the present invention is not limited by these effects.

1 is a cross-sectional view showing an electrode for electric discharge machining according to an embodiment of the present invention.
2 is a cross-sectional view showing an electrode for electric discharge machining according to another embodiment of the present invention.
3 is a cross-sectional view showing the use of the electrode for electric discharge machining in Fig.
4 is a cross-sectional view showing an electric discharge machining apparatus using an electrode for electric discharge machining according to another embodiment of the present invention.
5 is a cross-sectional view showing an electric discharge machining apparatus using an electrode for electric discharge machining according to still another embodiment of the present invention.
6 is a cross-sectional view showing an electric discharge machining apparatus using an electrode for electric discharge machining according to still another embodiment of the present invention.
7 is a cross-sectional view showing an electric discharge machining apparatus using an electrode for electric discharge machining according to another embodiment of the present invention.
8 is a cross-sectional view showing an electric discharge machining apparatus using an electrode for electric discharge machining according to another embodiment of the present invention.

The embodiments of the present invention are described in order to more fully explain the present invention to those skilled in the art, and the following embodiments may be modified into various other forms, The present invention is not limited to the embodiment. Rather, these embodiments are provided so that this disclosure will be more thorough and complete, and will fully convey the concept of the invention to those skilled in the art. In the drawings, the thickness and size of each layer are exaggerated for convenience and clarity of explanation.

Discharge machining is also referred to as spark machining, which is a method of machining a spark that occurs when an anode and cathode strike each other. In addition, in the electric discharge machining, the thermal energy generated by the spark is a processing method that can be made into a desired shape by melting or vaporizing the material to be processed. The discharge can be controlled in size and speed, and the machined portion of the object can be used for precision machining because it becomes very small particles and is melted or vaporized and removed. If voltage is applied to the electrode and object in the discharge liquid, discharge may occur on the surface of the object. Because of this discharge, the discharge liquid and the surface of the object are melted and evaporated to blow off the melted portion. The discharge liquid may be a liquid capable of inducing discharge such as kerosene, distilled water, hydrocarbon, deionized water and the like.

The present invention discloses an electrode and an apparatus for electric discharge machining for such electric discharge machining.

1 is a cross-sectional view showing an electrode for electric discharge machining 100 according to some embodiments of the present invention.

1, an electrode 100 for electric discharge machining according to an embodiment of the present invention may include an electrode body 10 and a discharge liquid discharging device 20. As shown in FIG.

1, the electrode body 10 includes an electrode tube portion 11 having a discharge liquid discharge line formed therein and a discharge device accommodating portion 12 formed at the tip of the electrode tube portion 11, . ≪ / RTI >

For example, the electrode body 10 may be made of a metal such as brass or graphite. The electrode body 10 may be made of a metal such as silver-tungsten, copper-tungsten, copper-tungsten, iron, copper, zinc, phosphor bronze, aluminum And the like.

The electrode tube portion 11 may be formed in the shape of a pipe having a discharge liquid flow path so that the discharge liquid can move inside the electrode body 10. Here, although not shown, the discharge liquid flow path includes an electrode body 10 ) May be formed.

1, the discharging device accommodating portion 12 may be provided at the tip of the electrode body 10, a portion of which is connected to the electrode tube portion 11, and the other portion of which is open to the outside It may be a round concave groove portion.

That is, the discharging device accommodating portion 12 may be formed to correspond to the discharging liquid discharging device 20 so as to accommodate the discharging liquid discharging device 20.

1, the discharge liquid discharging device 20 is provided in at least a part of the electrode body 10, and discharges the discharge liquid to a predetermined position of the object 1 through the discharge liquid discharge line And may be a ball-shaped rotating body 21 accommodated in the discharging device accommodating portion 12 and rotated in a rolling contact with the object 1.

On the other hand, the object 1 may be a flexible substrate including a substrate base 1-1 and a metal layer 1-2 formed on at least one surface of the substrate base 1-1, as shown in Fig. 1 Examples of the material of the flexible substrate include thermoplastic resins such as PC (Polycarbonate) resin, polyester resin and ABS (acrylonitrile-butadiene-styrene) resin, PC / ABS resin mixture, polyamide resin, modified polyphenylene ether resin, Engineering plastic, and PC / GF (Poly-carbonate + Glassfiber). The metal layer 1-2 may be used as an electrode or metal wiring as an object of patterning. The metal layer 1-2 may be made of a metal material such as aluminum, copper, tungsten, zinc, tin, lead, gold or silver.

1, the discharge liquid L of the electrode tube portion 11 can be applied to the outer circumferential surface of the rotating body 21, and the rotating body 21 coated with the discharge fluid on the outer circumferential surface thereof, The discharge liquid can be discharged onto the surface of the object 1 while being rotated in contact with the object 1 in a rolling contact.

Therefore, a discharge is generated between the discharged liquid discharged on the surface of the object 1 and the electrode tube portion 11, and a pattern can be selectively formed on the surface of the object 1. [

2 is a cross-sectional view showing an electrode 110 for electric discharge machining according to some other embodiments of the present invention.

2, the discharge liquid discharging device 20 of the electrode 110 for electric discharge machining according to some other embodiments of the present invention is provided in the clearance space 13 of the electrode body 10, It is possible to prevent the discharge liquid L from being discharged by the restoring force of the elastic member 23 or the discharge liquid discharge device 20 itself provided in the clearance space 13 and to prevent the discharge of the elastic member (22) having a T-shaped cross section that is formed to rise above the restoring force of the discharge liquid discharging device (20) itself or to ascend and discharge the discharge liquid (L) so that the object (1) .

The electrode tip 22 receives the restoring force of the elastic member 23 or the discharge liquid discharging device 20 itself and is blocked from the outside so that the discharge liquid can not be discharged and the elastic member 23 or the discharge liquid discharging device The electrode tip 22 is compressed to the clearance space 13 and the discharge device accommodating portion 12 is opened so that the discharge liquid can be discharged so that the elastic member 23 is compressed, A spring having a restoring force, a cylinder using compressed air or various gases, or a closed tube.

2, the electrode tip 22 is pushed outside of the discharging device accommodating portion 12 by the restoring force of the elastic member 23 or the discharge liquid discharging device 20 itself, 22 can be disconnected from the outside.

3, the discharge liquid discharging device 20 is accommodated in the discharging device accommodating portion 12 by a T-shaped electrode tip 22 and is brought into contact with the object 1 to form the electrode tip 22. Then, The discharge liquid L of the electrode tube portion 11 can be discharged to the outside of the discharge liquid discharge device 20 and the discharge liquid discharged on the surface of the object 1 can be discharged to the outside of the electrode tube portion 11 So that a pattern can be selectively formed on the surface of the object 1.

Figs. 4 and 5 are views showing the electric discharge machining apparatus 1000, 1100 using the electrode 100 for electric discharge machining according to various embodiments of the present invention.

4 and 5, the electric discharge machining apparatuses 1000 and 1100 may include a transfer apparatus 200, electrodes 100 and 110 for electric discharge machining, and a power applying apparatus 300. [

The conveying device 200 is a device capable of conveying the object 1 and is installed in the first roller 210 installed on one side to be conveyed to the second roller 220 installed on the other side so as to perform a continuous manufacturing process Roll-to-roll device. The transfer device 200 may include a first roller 210 wound with the object 1 before machining and a second roller 220 wound with the object 1 after the machining, And the second roller 220 rotate, the object 1 can be forcibly moved.

As shown in FIGS. 1 to 3, the discharge machining electrodes 100 and 110 are capable of accommodating the electrode tube portion 11 and the discharge liquid discharging device 20 in which the discharge liquid discharge lines are formed, The electrode body 10 including the discharging device accommodating portion 12 formed at the tip of the electrode tube portion 11 and the electrode body 10 so as to be connected to the discharge port of the object 1 through the discharging liquid discharging line, And a discharge liquid discharging device 20 for discharging the discharge liquid L at a predetermined position.

Here, the electrode body 10, the electrode tube portion 11, the discharging device accommodating portion 12, the discharging liquid discharging device 20, the rotating body 21, the electrode tip 22, the elastic member 23, The structure and the function of the electrodes of the electrodes 100 and 110 according to various embodiments of the present invention shown in Figs. 1 to 3 may be the same as those of the electrodes. Therefore, detailed description is omitted.

The power application apparatus 300 is configured such that the first roll electrode 210 contacts the object 1 and the discharge processing electrode 100 so that the discharge processing electrode 100 and the object 1 contact with each other, And 110, respectively. The power applying apparatus 300 is configured such that power is applied to the metal layer 1-2 by contacting the metal layer 1-2 formed on the upper surface of the object and while the object 1 is being conveyed by the conveying apparatus 10, Lt; / RTI >

In addition, although not shown, the conveying device 200 capable of conveying the object 1 may further include a power source and a power transmitting device for moving the device and the device capable of guiding the conveying direction. In addition, numerical values such as position, speed, and distance are input to a control unit (not shown) and a control unit (not shown) capable of moving the positions of the electrodes for electric discharge machining 100 and 110 by a predetermined displacement and controlling speed and distance For example.

Although not shown, the apparatus may further include a discharge liquid supply unit for supplying the discharge liquid L to deliver the discharge liquid L to the electrode bodies 10 of the discharge processing electrodes 110 and 120.

The discharge liquid supply unit may include a storage chamber or a storage tank. One or a plurality of supply channels may be formed to supply the discharge fluid stored in the storage chamber or the storage tank to the discharge machining electrodes 100 and 110. The supply channel may include an opening and closing device such as a valve can do.

And a pressure forming device such as a pump for continuously applying pressure so that the discharge liquid can be discharged through the discharge liquid discharging device 20. The pressure forming apparatus continuously applies a predetermined pressure to the supplied discharge fluid even if the position and the pressure of the electrode are changed due to the discharge of the object 1 and the electric discharge machining electrodes 100 and 110 during the electric discharge machining can do.

6 and 7 are views showing an electric discharge machining apparatus 1200, 1300 using an electrode 100 for electric discharge machining according to various embodiments of the present invention.

6, the power applying apparatus 300 is configured such that the electrodes for electric discharge machining 100, 110 are brought into contact with the metal layer 1-2 formed on the object 1, The electrode for electric discharge machining 100 and 110 and the device for applying electric power to the object 1. [ In order for the object 1 to be conveyed by the conveying apparatus 100 to be subjected to electric discharge machining, one end thereof is electrically connected to the object 1 and the other end thereof is electrically connected to the electrodes 100 and 110 for electrical discharge machining And can be installed so as to be electrically controlled by a power supply for electric discharge machining.

6, the power applying device 300 is configured to electrically contact the metal layer 1-2 formed on the upper surface of the object 1 even when the object 1 is transported along the transfer device 200 And a second roll electrode 310 formed in a roll shape so as to be connectable to the second roll electrode 310. In addition, as shown in FIG. 7, the brush electrode 320 may be formed in a plate shape and connected to the object 1.

As described above, when the surface of the object 1 is processed, the object 1 can be patterned continuously by applying a roll-to-roll process without using an exposure and etching process. In addition, the discharge liquid can be directly discharged from the electrode, minimizing the process of depositing the object in the discharge liquid or supplying the discharge liquid, thereby greatly reducing the processing time and the process cost, thereby improving the productivity.

8 is a view showing an electric discharge machining apparatus 1400 using an electrode 100 for electric discharge machining according to another embodiment of the present invention.

8, the electric discharge machining apparatus 1400 may include a transfer apparatus C, electrodes 100 and 110 for electric discharge machining, and a power applying apparatus 300. [

In addition, the object 1 may be a substrate formed of a material such as ceramic or glass, or may be a laminated substrate based on epoxy or resin in which a plurality of plates are stacked.

As shown in Fig. 8, the conveying device C is an apparatus capable of conveying the object 1, and may be, for example, a conveyor belt. The conveyor belt may be provided with a plurality of rollers and supporting portions at a lower portion thereof, which can operate to transfer the object 1 from one side to the other. Further, the apparatus may further include a device for continuously mounting the object 1 on the conveyor belt so that a continuous manufacturing process can be performed. Although the present invention has been described with reference to the embodiments shown in the drawings, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

1: object 1-1: substrate
1-2: metal layer 10: electrode body
11: electrode tube portion 12: discharging device accommodating portion
13: free space 20: discharge liquid discharging device
21: Rotor 22: Electrode tip
23: elastic member 100, 110: electrode for electric discharge machining
200: conveying device 210: first roller
220: second roller 300: power applying device
C: Conveyor belt
1000, 1100, 1200, 1300: Electric discharge machining apparatus

Claims (8)

An electrode body on which a discharge liquid discharge line is formed; And
A discharge liquid discharging device installed in at least a part of the electrode body and selectively discharging a discharge liquid to a predetermined position of the object through the discharge liquid discharge line;
And an electrode for electric discharge machining. The method according to claim 1,
The discharge liquid discharging device includes:
A ball-shaped rotating body installed so that the discharge fluid is discharged and applied to a surface of the object in a rolling contact with the object, and machining is performed on the object;
And an electrode for electric discharge machining. The method according to claim 1,
The discharge liquid discharging device includes:
The discharge space is provided in the clearance space of the electrode body so as to prevent discharge of the discharge liquid by the restoring force of the elastic member provided in the clearance space or the discharge liquid discharge device itself, Wherein the electrode tip has a T-shaped cross section, which is formed so as to rise above the restoring force of the member or the discharge liquid discharging device itself so that the discharge fluid is discharged and machining can take place on the object;
And an electrode for electric discharge machining. The method according to claim 1,
Wherein the electrode body comprises:
An electrode tube portion in which the discharge liquid discharge line is formed and is in the shape of a pipe; And
A discharging device accommodating portion formed at a tip of the electrode tube portion to accommodate the discharging liquid discharging device;
And an electrode for electric discharge machining. A transfer device for transferring the object;
An electrode for electric discharge machining according to any one of claims 1 to 5; And
A power applying device for applying power to the object and the electrode for electric discharge machining such that the electrode for electric discharge machining and the object are electrically contacted to form a pattern by electrical discharge machining;
And an electric discharge machining apparatus. 6. The method of claim 5,
The transfer device
Wherein the object is transferred from a first roller provided on one side to a second roller provided on the other side so that a continuous manufacturing process can be performed. 6. The method of claim 5,
The transfer device
Wherein the object is conveyed by a conveyor device installed from one side to the other side so as to be able to perform a continuous manufacturing process. 6. The method of claim 5,
The object,
And a wiring layer is formed in a regular name,
The power applying apparatus includes:
And a second roll electrode or brush electrode electrically contacting the wiring layer.
KR1020150127774A 2015-09-09 2015-09-09 Electrode for electrical discharge machining apparatus and electrical discharge machining apparatus using the same KR20170030326A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150127774A KR20170030326A (en) 2015-09-09 2015-09-09 Electrode for electrical discharge machining apparatus and electrical discharge machining apparatus using the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150127774A KR20170030326A (en) 2015-09-09 2015-09-09 Electrode for electrical discharge machining apparatus and electrical discharge machining apparatus using the same

Publications (1)

Publication Number Publication Date
KR20170030326A true KR20170030326A (en) 2017-03-17

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KR1020150127774A KR20170030326A (en) 2015-09-09 2015-09-09 Electrode for electrical discharge machining apparatus and electrical discharge machining apparatus using the same

Country Status (1)

Country Link
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