KR102425435B1 - Electric discharge-based mold processing equipment - Google Patents

Abstract

The present invention relates to a discharge-based mold processing device, which comprises: a workbench in which a bed is formed such that a workpiece may be mounted thereon; a discharge processing unit having a shaft located at the upper portion of the bed and having a discharge electrode formed at the lower end, a nozzle unit arranged around the bed to discharge a processing solution, and a driving unit moving the shaft in an X- and Y-axis direction; and a processing solution storage tank supplying the discharge processing solution to the workbench. Here, the processing solution storage tank comprises: a sewage storage unit into which the processing solution is introduced after having been used in a discharge processing; a clear water storage unit separated from the sewage storage unit; and a supply pump connected to be in communication with the clear water storage unit to supply clear water to the nozzle unit. Here, the sewage storage unit is divided into a first sewage storage unit and a second sewage storage unit by the partition unit on which a filter member is mounted, and comprises a fluid curtain generation unit mounted on the partition unit, and sprays the processing solution at a high pressure with respect to the filter member. Therefore, productivity may be increased.

Description

Electric discharge-based mold processing equipment

The present invention relates to an electric discharge-based mold processing apparatus that enables precision processing using a processing electrode during mold production.

In general, an electric discharge molding machine refers to a device that processes a workpiece by the electric discharge action generated between the workpiece and the wire by flowing currents of different poles to the workpiece and the wire.

An electric discharge machine that processes a workpiece by such wire electric discharge machining processes the workpiece by generating an electric discharge action while the wire moves in the processing tank containing the processing liquid.

Electric discharge machining is a method of precisely processing materials that are difficult to machine by NC milling or materials with very high hardness, such as cemented carbide, quenched high-speed steel, and heat-resistant steel. It is widely used in the processing of

In this electric discharge machining, the workpiece is roughed in a predetermined shape first, and the electrode is processed to correspond to the shape of the workpiece.

However, in the case of the prior art, when the suction pump sucks the machining liquid used for electric discharge machining, the sludge deposited in the machining liquid used for electric discharge machining is sucked together with the machining liquid to damage the suction pump or the purification filter. There is a problem of shortening the lifespan.

Korean Patent Application No. 10-2004-0039289

The present invention has been devised to solve the problems of the prior art, and a discharge-based mold that can improve productivity by preventing malfunctions by removing foreign substances contained in a processing liquid used for electric discharge machining and recycling them to use them. An object of the present invention is to provide a processing device.

The above-described object of the present invention, a workbench having a bed on which the workpiece is seated is formed; an electric discharge machining part having a shaft positioned above the bed and having a discharge electrode formed at a lower end thereof, a nozzle part disposed around the bed to eject a processing liquid, and a driving part moving the shaft in X and Y axis directions; and a processing fluid storage tank for supplying the electrical discharge machining fluid to the work bench, wherein the processing fluid storage tank includes a sewage storage unit into which the processing fluid used for electrical discharge machining flows, and a fresh water storage unit separated from the sewage storage unit and a supply pump connected to pass through the fresh water storage unit and supplying fresh water to the nozzle unit, wherein the sewage storage unit is divided into a first sewage storage unit and a second sewage storage unit by a partition wall on which a filter member is mounted, It can be achieved by the discharge-based mold processing apparatus comprising a; is mounted on the partition wall portion, the fluid curtain generating unit for high-pressure injection of the processing liquid to the filter member.

A plurality of drainage channels are formed on the inner bottom surface of the work table, and the bed includes fixing means for fixing and coupling to the drainage channels, and the fixing means includes a support to which an insertion pin inserted into the drain is coupled is formed on the outer surface, and the insertion It is characterized in that it includes a fastening member for lowering the pin to fit into the drain.

Meanwhile, a purification filter for purifying the processing liquid of the second sewage storage unit and supplying it to the fresh water storage unit; and a suction pump that sucks in the processing liquid of the second sewage storage unit and supplies it to the purification filter.

The nozzle part is characterized in that it comprises a bendable corrugated pipe, and a nozzle tip formed at the end of the corrugated pipe for spraying the processing liquid.

The fluid curtain generating unit includes a nozzle body to which a processing fluid supply pipe to which processing fluid is supplied is connected, and a nozzle tip formed under the nozzle body, and the processing fluid sprayed at high pressure from the nozzle tip removes foreign substances adhering to the filter member. characterized in that

The light source unit is formed on the outer surface of the workbench and emits light using an optical fiber to generate a signal so that it can be known that processing is in progress;

The light source unit may include: a tightening unit for binding one end of the optical fiber to one end;

and an optical fiber socket slot into which the optical fiber is inserted and coupled to the outside of the work bench together with the optical fiber to fix the optical fiber, wherein the optical fiber socket slot includes a head facing the front of the outside of the work table and a body into which the optical fiber is inserted It is characterized by including wealth.

According to the present invention, there is an effect that can improve productivity by preventing the occurrence of malfunctions by removing foreign substances contained in the processing fluid used for electric discharge machining and recycling them.

1 is a perspective view showing an electric discharge-based mold processing apparatus according to the present invention;
2 is a front view;
3 is an enlarged front view showing a 'working table and fixing means' in the electric discharge-based mold processing apparatus according to the present invention;
4 is a cross-sectional view of a 'processing liquid storage tank' in the electric discharge-based mold processing apparatus according to the present invention;
5 is a cross-sectional view showing a 'light source' in the electric discharge-based mold processing apparatus according to the present invention.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, since various changes may be made to the embodiments, the scope of the patent application is not limited or limited by these embodiments. It should be understood that all modifications, equivalents and substitutes for the embodiments are included in the scope of the rights.

Specific structural or functional descriptions of the embodiments are disclosed for purposes of illustration only, and may be changed and implemented in various forms. Accordingly, the embodiments are not limited to a specific disclosure form, and the scope of the present specification includes changes, equivalents, or substitutes included in the technical spirit.

Although terms such as first or second may be used to describe various elements, these terms should be interpreted only for the purpose of distinguishing one element from another. For example, a first component may be termed a second component, and similarly, a second component may also be termed a first component.

When a component is referred to as being “connected” to another component, it may be directly connected or connected to the other component, but it should be understood that another component may exist in between.

Terms used in the examples are used for the purpose of description only, and should not be construed as limiting. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present specification, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It is to be understood that this does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the embodiment belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

In addition, in the description with reference to the accompanying drawings, the same components are assigned the same reference numerals regardless of the reference numerals, and the overlapping description thereof will be omitted. In the description of the embodiment, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the embodiment, the detailed description thereof will be omitted.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention belongs It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims.

In the embodiments of the present invention, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by those of ordinary skill in the art to which the present invention belongs. have meaning Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in an embodiment of the present invention, an ideal or excessively formal meaning is not interpreted as

The shapes, sizes, proportions, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of the present invention are illustrative and the present invention is not limited to the illustrated matters. In addition, in describing the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. When 'include', 'have', 'consist', etc. mentioned in this specification are used, other parts may be added unless 'only' is used. When a component is expressed in the singular, the case in which the plural is included is included unless otherwise explicitly stated.

In interpreting the components, it is interpreted as including an error range even if there is no separate explicit description.

In the case of a description of the positional relationship, for example, when the positional relationship of two parts is described as 'on', 'on', 'on', 'beside', etc., 'right' Alternatively, one or more other parts may be positioned between two parts unless 'directly' is used.

Reference to an element or layer “on” another element or layer includes any intervening layer or other element directly on or in the middle of another element. Like reference numerals refer to like elements throughout.

The size and thickness of each component shown in the drawings are illustrated for convenience of description, and the present invention is not necessarily limited to the size and thickness of the illustrated component.

Each feature of the various embodiments of the present invention may be partially or wholly combined or combined with each other, and as those skilled in the art will fully understand, technically various interlocking and driving are possible, and each embodiment may be independently implemented with respect to each other, It may be possible to implement together in a related relationship.

Among the accompanying drawings, FIG. 1 is a front view showing an electric discharge-based mold processing apparatus according to the present invention, FIG. 2 is an enlarged front view showing a 'workbench and fixing means' in the electric discharge-based mold processing apparatus according to the present invention, FIG. 3 is A perspective view of a 'processing fluid storage tank' in the electric discharge-based mold processing apparatus according to the present invention, FIG. 4 is a perspective view of a 'fluid curtain generating unit' in the electric discharge-based mold processing apparatus according to the present invention, and FIG. It is a cross-sectional view showing the 'light source' in the electric discharge-based mold processing apparatus.

Discharge-based mold processing apparatus according to the present invention, a workbench 100 on which a bed 500 on which a workpiece is seated is formed; A shaft 210 positioned on the upper portion of the bed 500 and having a discharge electrode formed at the lower end thereof, a nozzle unit 160 disposed around the bed 500 to eject a processing liquid, and the shaft 210 X, Discharge machining unit 200 having a driving unit 260 to move in the Y-axis direction; It includes;

Referring to FIG. 3 , a plurality of drainage channels 120 are formed on the inner bottom surface of the work table 100 , and fixing means 520 for fixedly coupling to the drainage channels 120 are formed on the bed 500 .

The fixing means 520 has a support 530 to which the insertion pin 540 inserted into the drain 120 is coupled is formed on the outer surface, and a tightening member for lowering the insertion pin 540 to be inserted into the drain 120 ( 560).

The fastening member 560 includes a block 530 attached to the bed 500 and disposed on the upper part of the drain 120, and an insertion pin 540 that is screwed through the block 530 in the vertical direction; It is supported by the insertion pin 540 and is supported on both inner wall surfaces of the drainage channel 120 and is composed of both jigs 580 having inclined surfaces (see (a) of FIG. 3).

Therefore, when the insertion pin 540 is tightened, both jigs 580 are pushed out to both sides, so that they are in close contact with the inner surface of the drain 120 to exert a fixing force (refer to (b) of FIG. 3).

The nozzle unit 160 for ejecting the processing liquid toward the bed 500 is mounted on the upper portion of the work table 100 .

The nozzle unit 160 is formed at the end of the base 162 fixed to the work table 100, the corrugated pipe 164 that is connected to the base 162 and can be freely bent, and the corrugated pipe 164 is processed. It includes a nozzle tip 166 for spraying a liquid, and the processing liquid storage tank 400 is connected to the corrugated pipe 164 so that the processing liquid is continuously sprayed on the bed 500 through the nozzle unit 160 to perform electric discharge machining. This can be practiced.

The processing liquid storage tank 400 includes a sewage storage unit 420 into which a processing liquid used for electric discharge machining flows, a fresh water storage unit 460 separated from the sewage storage unit 420 , and a fresh water storage unit 460 . ) and a supply pump 480 connected to supply fresh water to the nozzle unit 160 .

The sewage storage unit 420 is for storing sewage generated after electric discharge machining, and a first sewage storage unit 421 and a second sewage storage unit ( 422).

The processing liquid flowing into the sewage storage unit 420 passes through the filter member 432 of the partition wall 430 while moving from the first sewage storage unit 421 to the second sewage storage unit 422 , and foreign substances are filtered. can be

A purification filter 450 that purifies the processing liquid of the second sewage storage unit 422 and supplies it to the fresh water storage unit 460 , and is mounted on the rear end of the purification filter 450 to provide the second sewage storage unit 422 . A suction pump 470 for sucking the processing liquid and supplying it to the fresh water storage unit 460 is provided.

Accordingly, the suction pump 470 is driven to filter the processing liquid of the second sewage storage unit 422 while passing through the purification filter 450 to remove foreign substances.

By removing foreign substances and sludge, the life of the suction pump 470 may be extended.

A fluid curtain generating unit 490 mounted on the partition wall 430 and spaced apart from the outer surface of the filter member 432 by a predetermined distance to jet the processing fluid in a vertical direction at high pressure is formed.

Referring to FIG. 4 , in the fluid curtain generating unit 490 , a nozzle body 492 connected to a processing liquid supply pipe to which processing liquid is supplied is mounted on an upper portion of the filter member 432 , and formed below the nozzle body 492 . It consists of a nozzle tip 494, and the nozzle tip 494 is spaced apart from the outer surface of the filter member 432 by a predetermined interval and is arranged to vertically spray the processing liquid at a high pressure.

Therefore, the life of the filter member 432 can be extended by blocking in advance so that foreign substances are not adhered to the filter member 432 due to the processing fluid continuously sprayed at high pressure from the nozzle tip 494 of the fluid curtain generator 490 . It is possible to prevent foreign substances from flowing into the fresh water storage unit 460 in advance.

Meanwhile, as shown in FIG. 5 , the light source unit (L) is formed on the outer surface of the work bench 100 and emits light using an optical fiber to generate a signal to indicate that a processing operation is in progress; may further include.

The light source unit (L) is an optical fiber 23, a tightening unit 24, an optical fiber socket slot 25, a reflection unit 30, and a detection sensor (not shown) that detects that a processing operation is in progress and generates an on/off signal to turn the light source unit on and off. city) may be further included.

The tightening unit 24 may bind one end of the optical fiber 23 to one end.

The tightening unit 24 may supply power from the outside and may perform a socket function in which an LED is formed therein.

In the optical fiber socket slot 25 , a plurality of optical fibers 23 may be inserted to couple the optical fibers 23 to the outer surface of the workbench 100 .

The optical fiber socket slot 25 can fix the optical fiber 23 while the other end of the optical fiber 23 is in contact with the outer surface of the work table 100 .

Since the other end of the optical fiber 23 is formed in a shape like a skein of thread, in order to be coupled to the outside of the workbench 100 , it may be coupled to the outside of the workbench while being inserted into the optical fiber socket slot 25 .

The optical fiber socket slot 25 is composed of a head facing the outside of the worktable and a body into which the optical fiber 23 is inserted.

The reflection unit 30 may include an internal reflection unit 34 , a surface reflection unit 35 , and a light source amplifier 321 .

The internal reflection unit 34 may be bonded to the outer surface of the workbench 100 to radiate the light from the light source to the outer surface of the workbench 100 .

The surface reflector 35 may be positioned to be spaced apart from the internal reflector 34 and the outer surface of the work table 100 .

The surface reflector 35 may pass incoming light incident on the outer surface of the work bench 100 to the internal reflector 34 , and reflect some light to the outer surface of the work bench 100 .

The light source amplifying unit 321 may be positioned between the internal reflecting unit 34 and the surface reflecting unit 35 , and the first light source amplifying unit 321-1 corresponding to one side of the boundary and the other side of the boundary It may be divided into a corresponding second light source amplifying unit 321 - 2 .

That is, the first light source amplifying unit 321-1 and the second light source amplifying unit 321-2 may be formed at positions corresponding to both sides of the boundary portion.

The light source amplifying unit 321 may be formed in a concave shape similar to an hourglass inward between the surface reflection unit 35 and the internal reflection unit 34 .

The light source amplifying unit 321 may refract the light emitted from the light source unit L emitted through the internal reflection unit 34 , and may refract light entering through the surface reflection unit 35 .

Although the embodiments of the present invention have been described in more detail with reference to the accompanying drawings, the present invention is not necessarily limited to these embodiments, and various modifications may be made within the scope without departing from the technical spirit of the present invention. . Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.

100: workbench 120: drain
160: nozzle unit 164: corrugated pipe
166: nozzle tip 200: electric discharge machining part
210: shaft 260: driving unit
400: processing liquid storage tank 420: sewage storage unit
460: fresh water storage unit 480: supply pump
500: bed 520: fixing means
540: insertion pin 530: support
560: fastening member 580: jig

Claims (3)

a workbench having a bed on which the workpiece is mounted;
an electric discharge processing unit having a shaft positioned above the bed and having a discharge electrode formed at a lower end thereof, a nozzle unit disposed around the bed to eject a processing liquid, and a driving unit moving the shaft in X and Y axis directions;
Including; a processing fluid storage tank for supplying the electrical discharge processing fluid to the workbench;
The processing liquid storage tank,
A sewage storage unit into which the processing liquid used for electric discharge machining flows, a fresh water storage unit separated from the sewage storage unit, and a supply pump connected to the fresh water storage unit to supply fresh water to the nozzle unit,
The sewage storage unit is divided into a first sewage storage unit and a second sewage storage unit by a partition wall on which a filter member is mounted,
and a fluid curtain generating unit mounted on the partition wall and injecting a high-pressure processing liquid to the filter member;
the workbench
A number of drainage channels are formed on the inner bottom surface,
The bed includes a fixing means for fixing and coupling to the drain,
The fixing means
A support to which the insertion pin to be inserted into the drain is coupled is formed on the outer surface, and a tightening member for lowering the insertion pin to be inserted into the drain is included.
The fastening member includes a block attached to a bed and disposed on the upper part of the drain, an insertion pin that is screwed through the block in a vertical direction, is supported by the insertion pin, is supported on both inner wall surfaces of the drain, and has an inclined surface. It includes both jigs,
a purification filter for purifying the processing liquid of the second sewage storage unit and supplying it to the fresh water storage unit;
Including a;
The suction pump is driven so that the processing liquid of the second sewage storage unit is filtered while passing through the purification filter to remove foreign substances,
The fluid curtain generating unit,
It consists of a nozzle body to which a processing liquid supply pipe to which processing liquid is supplied is connected, and a nozzle tip formed under the nozzle body, and the processing liquid sprayed at high pressure from the nozzle tip removes foreign substances adhering to the filter member,
a light source unit formed on the outer surface of the workbench and emitting light using an optical fiber to generate a signal to indicate that processing is in progress;
The light source unit,
It includes a tightening unit, an optical fiber socket slot, a reflection unit, and a detection sensor that generates an ON/OFF signal to detect that processing is in progress and turns the light source unit ON/OFF,
The tightening unit binds and combines one end of the optical fiber to supply power from the outside and to perform a socket function in which an LED is formed,
In the optical fiber socket slot, a plurality of optical fibers are inserted to couple the optical fibers to the outer surface of the work table, and the optical fiber can be fixed while the other end of the optical fiber is in contact with the outer surface of the work table,
The optical fiber socket slot is composed of a head facing the outside of the work table and a body into which the optical fiber is inserted,
The reflection unit includes an internal reflection unit, a surface reflection unit, and a light source amplifying unit,
The internal reflection unit may be bonded to the outer surface of the workbench to radiate the light of the light source to the outer surface of the workbench,
The surface reflector is positioned to be spaced apart from the internal reflector and the outer surface of the work table,
The surface reflector may pass incoming light incident on the outer surface of the worktable to the internal reflector, and reflect some light to the outer surface of the workbench,
The light source amplifying unit may be located between the internal reflection unit and the surface reflection unit, and includes a first light source amplifying unit corresponding to one side of the boundary and a second light source amplifying unit corresponding to the other side of the boundary,
The first light source amplifying unit and the second light source amplifying unit are formed at positions corresponding to both sides of the boundary,
The light source amplifying unit is formed in an hourglass shape inside between the surface reflection unit and the internal reflection unit,
The light source amplifying unit refracts the light emitted from the light source unit through the internal reflection unit, discharge-based mold processing apparatus, characterized in that to refract the light entering through the surface reflection unit.
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