KR20140080835A - Wire electric discharge machine - Google Patents

Wire electric discharge machine Download PDF

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Publication number
KR20140080835A
KR20140080835A KR1020120149089A KR20120149089A KR20140080835A KR 20140080835 A KR20140080835 A KR 20140080835A KR 1020120149089 A KR1020120149089 A KR 1020120149089A KR 20120149089 A KR20120149089 A KR 20120149089A KR 20140080835 A KR20140080835 A KR 20140080835A
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KR
South Korea
Prior art keywords
wire
machining
storage section
fluid
electric discharge
Prior art date
Application number
KR1020120149089A
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Korean (ko)
Inventor
장태수
Original Assignee
두산인프라코어 주식회사
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Priority to KR1020120149089A priority Critical patent/KR20140080835A/en
Publication of KR20140080835A publication Critical patent/KR20140080835A/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
    • B23H7/02—Wire-cutting
    • B23H7/08—Wire electrodes
    • B23H7/10—Supporting, winding or electrical connection of wire-electrode
    • B23H7/101—Supply of working media
    • 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
    • B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
    • B23H1/10—Supply or regeneration of working media
    • 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

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

Abstract

A wire electric discharge machine according to an embodiment of the present invention includes a wastewater storage unit into which a processing liquid used for electric discharge machining flows, And a wastewater storage section separated from the wastewater storage section, wherein the wastewater storage section is divided into a first wastewater storage section and a second wastewater storage section by a partition wall provided with a mesh filter, a wire used for electric discharge machining, A wire discharging device for separating and discharging the machining liquid sprayed for induction, and at least one fluid curtain producing nozzle for receiving the machining fluid separated and discharged from the wire discharging device and jetting the machined liquid toward the mesh filter.

Description

[0001] WIRE ELECTRIC DISCHARGE MACHINE [0002]

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 that effectively recycles and recycles a used fluid used in electrical discharge machining.

Generally, wire electric discharge machining refers to a method of machining a workpiece by discharging current generated between a workpiece and a wire by flowing a current having a different polarity to the workpiece and the wire.

An electric discharge machine for processing a workpiece by such wire electric discharge machining processes a workpiece by causing a discharge action while a wire moves in a processing tank containing a workpiece fluid.

The wire used for the discharge machining is recovered through the wire discharge device, and the machining fluid used for the discharge machining is recovered to the machining fluid storage tank and then reused through the purifying filter.

Referring to FIG. 1, a conventional processing liquid storage tank 50 includes a wastewater storage unit 51 into which processing liquid used for electric discharge is introduced, And a fresh water storage section 52. At this time, the working fluid in the wastewater storage part 51 is moved to a purification filter (not shown) through the suction pump 65 and purified, and then stored in the fresh water storage part 52. The working fluid in the fresh water storage part (52) is supplied through the working fluid feeding pump (68) to a place where the working fluid is required.

However, in the conventional wire electric discharge machine, when the suction pump sucks the working fluid used for the electric discharge machining, the sludge precipitated in the working fluid used for the electric discharge machining is sucked together with the working fluid, There is a problem that it damages or shortens the service life.

An embodiment of the present invention provides a wire discharge machining apparatus that effectively recycles and recycles a machining fluid used in electric discharge machining.

According to the embodiment of the present invention, a wire electric discharge machine uses electric discharge machining using a wire and a machining fluid. The wire discharge machine includes a wastewater storage portion into which the working fluid used for the discharge machining flows and a fresh water storage portion separated from the wastewater storage portion. The wastewater storage portion is divided into a first wastewater A wire discharge device for separating and discharging a wire used for electric discharge machining and a machining fluid sprayed for guiding the wire, and a wire discharge device for discharging the wire discharged from the wire discharge device And at least one fluid curtain generating nozzle for receiving the machining fluid and jetting the machining fluid toward the mesh filter.

The working fluid used for the discharge processing may flow into the first sewage storage section and then to the second sewage storage section via the mesh filter.

The discharge machining apparatus includes a purifying filter for purifying a working fluid in the second sewage water storing section and supplying the purifying water to the fresh water storing section, a suction pump for sucking the working fluid from the second sewage storing section and supplying the working fluid to the purifying filter, As shown in FIG.

The wire discharging device includes a wire used for electrical discharge machining, a supply pipe through which the machining fluid injected for guiding the wire moves, a discharge roller for drawing and pulling the wire from the supply pipe, And a processing liquid discharging portion for discharging the processing liquid separated from the wires in the guide nozzle portion.

According to the embodiment of the present invention, the wire electric discharge machine can effectively recycle the working fluid used for electric discharge machining.

1 is a perspective view of a processing liquid storage tank used in a conventional wire electric discharge machine.
2 is a perspective view of a wire electric discharge machine according to an embodiment of the present invention.
3 is a sectional view of the wire discharging device used in the wire electric discharge machine of Fig.
4 is a perspective view of a processing liquid storage tank used in the wire electric discharge machine of FIG.
Fig. 5 is an enlarged perspective view of the fluid curtain generating nozzle of Fig. 4; Fig.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may be embodied in many different forms and is not limited to the embodiments described herein.

The drawings are schematic and illustrate that they are not drawn to scale. The relative dimensions and ratios of the parts in the figures are shown exaggerated or reduced in size for clarity and convenience in the figures, and any dimensions are merely illustrative and not restrictive. And to the same structure, element or component appearing in more than one drawing, the same reference numerals are used to denote similar features.

The embodiments of the present invention specifically illustrate ideal embodiments of the present invention. As a result, various variations of the illustration are expected. Thus, the embodiment is not limited to any particular form of the depicted area, but includes modifications of the form, for example, by manufacture.

Hereinafter, a wire electric discharge machine 101 according to an embodiment of the present invention will be described with reference to Figs. 2 to 5. Fig.

2, a wire electric discharge machining apparatus 101 according to an embodiment of the present invention includes a working fluid storage tank 500, a wire discharging device 400, and a fluid curtain producing nozzle 750 .

A wire electric discharge machine 101 according to an embodiment of the present invention includes a work tank 300, a wire transfer unit 200, an upper arm 310, an upper wire guide 320, a lower arm (not shown) A wire guide 340, a purifying filter 620, a suction pump 650, and a machining liquid supply pump 680.

The working tank 300 is a space for discharging the workpiece. The working tank 300 contains a working fluid, and the energized wire passes through the working tank 300 while processing a workpiece immersed in the working fluid.

The wire feeder 200 feeds the wire to the work tank 300. Specifically, the wire feeding section 200 includes a take-up reel 210 in which the wire is wound and a feed roller 250 for feeding the wire wound on the take-up reel 210. [

The upper wire guide 320 energizes the wire received from the feed roller 250 and guides it to the work tank 320. The upper arm 310 supports the upper wire guide 320 and guides the wire discharged from the supply roller 250 to the upper wire guide 320.

The lower wire guide 340 guides the wire passing through the working tank 300 to the wire discharging device 400. The processing liquid stored in the processing liquid storage tank 500, which will be described later, is jetted from the lower wire guide 340 to push the wire toward the wire discharging device 400. The lower arm supports the lower wire guide 340, though not shown, and guides the wire from the lower wire guide 340 to the wire discharging device 400.

The above-described working tank 300, the wire conveying unit 200, the upper arm 310, the upper wire guide 320, the lower arm (not shown), and the lower wire guide 340 are not limited to those shown in FIG. 2 And can have various structures within a range that can be easily changed by those skilled in the art.

3, the wire discharging device 400 includes a supply pipe 410, a guide nozzle part 420, a processing liquid discharging part 430, and a discharge roller part 480.

The feed pipe 410 moves the wire together with the machining fluid jet-jetted to push the wire in the direction of the wire ejector 400 from the lower wire guide 340.

The guide nozzle unit 420 guides the wire W moved through the supply pipe 410 to the discharge roller unit 480. The guide nozzle unit 420 may include a plurality of discharge nozzles 421, 422, and 423. Specifically, the guide nozzle unit 420 may include a plurality of discharge nozzles 421, 422, and 423 having a through-hole shape in which the sectional area gradually decreases from the inlet to the outlet. At this time, among the plurality of discharge nozzles 421, 422, and 423, the cross-sectional area of the discharge port gradually decreases as the discharge nozzle 423 is closer to the discharge roller portion 480.

In addition, the wire W, which is introduced together with the machining liquid through the supply pipe 410, is separated from the machining liquid which has moved together while passing through the guide nozzle unit 420.

The machining liquid discharge portion 430 discharges the machining fluid separated from the wire W at the guide nozzle portion 420.

The discharge roller portion 480 pulls the wire W and recovers the wire W to a wire bucket (not shown).

4, the working fluid storage tank 500 includes a wastewater storage section 510 through which the working fluid used for the discharge processing flows in the working tank 300, and a fresh water storage (520).

The wastewater storage portion 510 of the processing liquid storage tank 500 may be divided into a first wastewater storage portion 511 and a second wastewater storage portion 512 separated by the partition portion 550 . A mesh filter 700, which will be described later, is installed in an open region of the partition portion 550. Accordingly, in one embodiment of the present invention, after the working fluid used for the electric discharge machining in the working tank 300 flows into the first wastewater storage part 512, the second wastewater storage part 512 512).

The purifying filter 620 (shown in FIG. 2) purifies the working fluid in the second waste water storage part 512 and supplies it to the fresh water storage part 520.

The suction pump 650 sucks the working fluid in the second waste water storage part 512 and supplies it to the purifying filter 620.

The processing liquid supply pump 680 supplies the processing liquid of the fresh water storage portion 520 purified by the purifying filter 620 to the working tank 300. Further, the machining liquid supply pump 680 can supply the machining liquid of the fresh water storage part 520 to the lower wire guide 340. The working fluid in the fresh water storage part 520 supplied to the lower wire guide 340 may be jetted to induce the wire.

The mesh filter 700 is installed in the partition wall portion 550 and the working fluid in the first wastewater storage portion 511 is moved to the second wastewater storage portion 512 through the mesh filter 700 . The mesh filter 700 may be formed of various materials and structures known to those skilled in the art.

The fluid curtain generating nozzle 750 ejects the processing liquid separated and discharged from the wire discharging device 400 toward the mesh filter 700. That is, the fluid curtain generating nozzle 750 injects the working fluid to form a fluid curtain in the mesh filter 700. Here, the fluid curtain has the same principle and action effect as a generally used air curtain.

On the other hand, in the first waste water storage part 511, a sludge precipitated from the working fluid that has been used in the electric discharge machining in the working tank 300 may be generated.

The mesh filter 700 and the fluid curtain generating nozzle 750 suppress the movement of the sludge settled in the first sewage storage section 511 to the second sewage storage section 512.

Therefore, the suction pump 650 for sucking the working fluid from the second wastewater storage part 512 and the purifying filter 620 for purifying the working fluid supplied from the suction pump 650 are damaged by the sludge or shortened in life Can be suppressed.

Further, since the fluid curtain generating nozzle 750 utilizes the working fluid separated from the wire discharging device 400, the fluid curtain can be simply generated in the mesh filter 700 without any additional configuration.

Hereinafter, the operation principle of the wire electric discharge machine 101 according to the embodiment of the present invention will be described in detail.

First, the working fluid used for the electric discharge machining in the working tank 300 flows into the first wastewater storage section 511 of the processing liquid storage tank 500. In the first waste water storage unit 511, sludge precipitated from the processing liquid is generated.

Next, the processing liquid in the first waste water storage part 511 moves to the second waste water storage part 512 via the mesh filter 700 installed in the partition part 550. [

In one embodiment of the present invention, the fluid curtain generating nozzle 750 receives the processing liquid separated and discharged from the wire discharging device 400 and injects it toward the mesh filter 700. Thus, a fluid curtain is generated in the mesh filter 700.

Therefore, the fluid curtain produced by the mesh filter 700 and the fluid curtain generating nozzle 750, when the working fluid in the first waste water reservoir 511 moves to the second waste water reservoir 512, 2 wastewater storage unit 512. [0064]

The processing liquid which has been transferred to the second waste water storage part 512 is directed to the purifying filter 620 by the suction pump 650 and the processing liquid which has been purified through the purifying filter 620 is stored in the fresh water storage part 520 .

The working fluid in the fresh water storage part 520 may be supplied to the working tank 300 by the working fluid feeding pump 680 and used for the electric discharge machining.

In addition, the working fluid in the fresh water storage part 520 may be jetted so as to be fed to the lower wire guide 340 and the wire subjected to the discharge processing to be directed in the direction of the wire discharging device 400.

As such, the processing liquid introduced into the wire discharging device 400 along with the wire to guide the wire is separated from the wire in the wire discharging device 400, and then supplied to the fluid curtain producing nozzle 750.

According to the process as described above, in one embodiment of the present invention, the processing liquid is supplied to the working tank 300, the first sewage storage section 511, the mesh filter 700, the second sewage storage section 512, The filter 620, and the fresh water storage unit 520, as shown in FIG.

In the embodiment of the present invention, the processing liquid is supplied to the lower wire guide 340, the wire discharging device 400, the fluid curtain producing nozzle 750, the mesh filter 700, the second waste water storing portion 512, The filter 620, and the fresh water storage unit 520, as shown in FIG.

With such a configuration, the wire electric discharge machine 101 according to the embodiment of the present invention can effectively purify and recycle the machining fluid used in the electric discharge machining.

Specifically, in one embodiment of the present invention, the working fluid used in the electric discharge machining in the working tank 300 flows into the first wastewater storage section 511. At this time, the sludge precipitated from the processing liquid is generated in the first waste water storage part 511. The processed liquid in the first waste water storage part 511 is moved to the second waste water storage part 512 through the mesh filter 700. The mesh filter 700 and the fluid curtain generating nozzle 750 are arranged so that the sludge And stops moving to the wastewater storage unit 512. Therefore, the suction pump 650 and the purifying filter 620, which suck and purify the working fluid in the second wastewater storage part 512, are prevented from being damaged by the sludge.

Particularly, in one embodiment of the present invention, the fluid curtain generating nozzle 750 utilizes the working fluid separated in the wire discharging device 400 without any additional configuration, effectively creating a fluid curtain in the mesh filter 700 It is possible to prevent the sludge from damaging the suction motor 650 and the purifying filter 620.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. will be.

It is therefore to be understood that the embodiments described above are to be considered in all respects only as illustrative and not restrictive, the scope of the invention being indicated by the appended claims, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

101: wire electric discharge machine 200: wire transfer part
210: take-up reel 250: feed roller
300: Working tank 310: Upper arm
320: upper wire guide 340: lower wire guide
400: wire discharge device 410: supply pipe
420: guide nozzle unit 430: machining liquid discharge unit
480: Discharge roller part 500: Working fluid storage tank
511: first waste water storage unit 512: second waste water storage unit
520: fresh water storage part 550: partition wall part
620: purge filter 650: suction pump
680: Liquid supply pump 700: Mesh filter
750: fluid curtain generating nozzle

Claims (4)

1. A wire electric discharge machine for discharging electric wire using a wire and a working fluid,
And a fresh water storage section separated from the wastewater storage section, wherein the wastewater storage section is divided into a first wastewater storage section and a second wastewater storage section by a partition wall provided with a mesh filter, 2 processing liquid storage tank divided into a sewage storage section;
A wire discharging device for separating and discharging a wire used for electric discharge machining and a machining fluid sprayed for guiding the wire; And
And at least one fluid curtain-generating nozzle for receiving the machining fluid separated and discharged from the wire discharging device,
And a wire discharge machine. The method of claim 1,
Wherein the machining fluid used for the discharge machining flows into the first wastewater storage section and then to the second wastewater storage section via the mesh filter. 3. The method of claim 2,
A purifying filter for purifying the working fluid of the second waste water storage part and supplying the purified water to the fresh water storage part;
A suction pump for sucking the processing liquid from the second waste water storage part and supplying the processing liquid to the purifying filter,
Further comprising a wire discharge machining apparatus. 4. The method according to any one of claims 1 to 3,
The wire discharging device includes a wire used for electric discharge machining, a supply pipe through which the machining fluid injected for guiding the wire moves, a discharge roller for drawing and pulling the wire from the supply pipe, And a machining liquid discharge portion for discharging the machining fluid separated from the wire in the guide nozzle portion.
KR1020120149089A 2012-12-20 2012-12-20 Wire electric discharge machine KR20140080835A (en)

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Application Number Priority Date Filing Date Title
KR1020120149089A KR20140080835A (en) 2012-12-20 2012-12-20 Wire electric discharge machine

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102425435B1 (en) * 2021-10-25 2022-07-25 윤병호 Electric discharge-based mold processing equipment
KR102425436B1 (en) * 2021-10-27 2022-07-27 선일산업 주식회사 Wire cut electric discharge mold processing equipment
CN115780935A (en) * 2022-12-30 2023-03-14 无锡宝德金装备科技有限公司 Linear cutting machine with cutting fluid recycling function
KR20230092679A (en) * 2021-12-17 2023-06-26 한국원자력로봇 유한책임회사 Electric Discharge Machining System for Steam Generator Heat Exchanger Tube and Heat Exchanger Tube Incision Method of Steam Generator Using The Same
KR20230093583A (en) * 2021-12-20 2023-06-27 김한정 Wire Cutting Machine Processed Water Treatment System

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102425435B1 (en) * 2021-10-25 2022-07-25 윤병호 Electric discharge-based mold processing equipment
KR102425436B1 (en) * 2021-10-27 2022-07-27 선일산업 주식회사 Wire cut electric discharge mold processing equipment
KR20230092679A (en) * 2021-12-17 2023-06-26 한국원자력로봇 유한책임회사 Electric Discharge Machining System for Steam Generator Heat Exchanger Tube and Heat Exchanger Tube Incision Method of Steam Generator Using The Same
KR20230093583A (en) * 2021-12-20 2023-06-27 김한정 Wire Cutting Machine Processed Water Treatment System
CN115780935A (en) * 2022-12-30 2023-03-14 无锡宝德金装备科技有限公司 Linear cutting machine with cutting fluid recycling function

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