KR101555952B1 - Movable wire-cut discharge machine - Google Patents

Movable wire-cut discharge machine Download PDF

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Publication number
KR101555952B1
KR101555952B1 KR1020150075709A KR20150075709A KR101555952B1 KR 101555952 B1 KR101555952 B1 KR 101555952B1 KR 1020150075709 A KR1020150075709 A KR 1020150075709A KR 20150075709 A KR20150075709 A KR 20150075709A KR 101555952 B1 KR101555952 B1 KR 101555952B1
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KR
South Korea
Prior art keywords
work table
wire
work
movable
support arm
Prior art date
Application number
KR1020150075709A
Other languages
Korean (ko)
Inventor
오재식
Original Assignee
오재식
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Priority to KR1020150075709A priority Critical patent/KR101555952B1/en
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Publication of KR101555952B1 publication Critical patent/KR101555952B1/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
    • 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
    • B23H7/26—Apparatus for moving or positioning electrode relatively to workpiece; Mounting of electrode
    • 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
    • B23H2400/00—Moving mechanisms for tool electrodes

Abstract

The present invention relates to a movable wire-cut electrical discharge machine including a work table installed in a work target area, a first carrying unit installed on the work table to be able to move forward and backward, a second carrying unit on the first carrying unit to be able to move side to side, and a wire cutting unit installed on the second carrying unit and cutting a target to be machined, wherein the work table is installed to be movable in the work target area. According to the present invention, the movable wire-cut electrical discharge machine has a structure to be easily moved to the target to be machined installed in the work target area, thereby easily machining a counter target to be machined, which is too heavy or bulky to move in the work target area. Also, the movable wire-cut electrical discharge machine can be reduced in size since it does not require any separate receiving unit where the target is disposed. Moreover, it is possible to improve machining accuracy by preventing a machining position of the wire cutting unit from changing due to deviation of the work table from a set machining position even if an unexpected external force is applied to the work table since the movable wire-cut electrical discharge machine includes an anti-floating unit, and to improve productivity since resetting the machining position of the work table is not required.

Description

[0001] Movable wire-cut discharge machine [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moving wire electric discharge machining apparatus, and more particularly, to a moving wire electric discharge machining apparatus capable of cutting an object by using a spark generated due to a discharge phenomenon between a wire and an object.

Generally, a wire cutting apparatus is a machine tool for precisely cutting an object to be processed by using fine copper wire, brass wire or tungsten wire of about 0.05 to 0.25 mm.

In Korean Patent No. 1502254, there is disclosed a work machine having a work table, first and second pulleys arranged linearly on upper and lower sides of the work table, rotational power means for supplying rotational force to at least one of the first and second pulleys, A diamond wire wound around the first and second pulleys; a front and rear rails arranged on the work table in the fore-and-aft direction; and an object to be processed, which is detachably mounted on the front and rear rails and is cut by the diamond wire, A cutting apparatus using a diamond wire saw including the chuck member to which the wire is fixed is disclosed.

Korean Patent Registration No. 1502254 discloses a method of cutting an object to be machined by fixing an object to a chuck member and then moving the chuck member along the front and rear rails to enter the object to be machined by a winding wire wound around the first and second pulleys, to be.

However, the above-mentioned Korean Patent No. 1502254 shows that a small workpiece having a smaller volume than a chuck member can be easily fixed to a chuck member, but a large workpiece having an excessive weight or a larger volume than the chuck member can be chucked There is a problem that it can not be put on the member and the process can not be performed.

Korean Patent No. 1502254 entitled " Diamond wire saw cutting device "

It is an object of the present invention to provide a movable wire electric discharge machining apparatus which can easily move to an object to be machined installed in a work area.

Another object of the present invention is to provide a movable wire electric discharge machining apparatus provided with a flow preventing section for preventing the work table from flowing and changing the machining position during machining of an object to be machined.

According to an aspect of the present invention, there is provided a wire cutting apparatus for cutting an object to be processed provided in a work area, the wire cutting apparatus comprising: a work table provided in a work area; And a wire cutting unit installed at an upper portion of the second transfer unit for cutting the object to be processed, wherein the work table is moved in a movement target area The movable wire electric discharge machining apparatus being characterized in that it is installed as far as possible.

The apparatus may further include a first flow preventive portion, one end of which is inserted into one side of the work table so as to be slidable and the other end is fixed to one side of the object to be processed.

The work table includes a plurality of conveying rollers provided at one side of the lower portion, and is rotatably coupled to one side of the work table, and is supported at one side of each of the conveying rollers to prevent the movement of the work table It is more preferable to further include a second flow prevention portion.

The wire cutting unit may include a support body vertically installed on the upper portion of the second transfer unit, a first support arm vertically movably installed on one side of the support body, And a wire provided between the first support arm and the second support arm.

According to the present invention as described above, it is possible to easily process opposing objects to be processed, which are difficult to move in the work area due to excessive weight or volume, by providing a structure that can be easily moved to an object to be processed, have.

In addition, since it is not necessary to form a separate seating part on which the object to be processed is seated, it is possible to downsize the apparatus.

In addition, even if an unexpected external force acts on the work table due to the provision of the flow preventing portion, the work table is moved away from the set machining position, and the machining position of the wire cutting portion is not changed so that the machining accuracy is improved. No work is required by resetting, which improves productivity.

1 is a perspective view of a movable wire electric discharge machining apparatus according to an embodiment of the present invention.
2 is a side view of a movable wire electric discharge machining apparatus according to an embodiment of the present invention.
3 is a side view of a movable wire electric discharge machining apparatus according to another embodiment of the present invention in a state that the movable wire electric discharge machining apparatus is installed on an object to be machined.
4 is a plan view of a movable wire electric discharge machining apparatus according to another embodiment of the present invention, which is installed on a workpiece.
Fig. 5 is a view of Fig. 3 taken in the direction A; Fig.
6 (a) and 6 (b) are views for explaining the operation of the first flow preventing portion of the moving type wire electric discharge machining apparatus according to another embodiment of the present invention.
7 (a) and 7 (b) are views for explaining the operation of the second flow prevention portion of the moving type wire electric discharge machining apparatus according to another embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the drawings. It is to be noted that like elements in the drawings are represented by the same reference numerals as possible. Further, detailed description of known functions and configurations that may unnecessarily obscure the gist of the invention will be omitted.

FIG. 1 is a perspective view of a mobile wire electric discharge machining apparatus according to an embodiment of the present invention, and FIG. 2 is a side view of a mobile wire electric discharge machining apparatus according to an embodiment of the present invention.

1 and 2, a movable wire electric discharge machining apparatus 1 according to an embodiment of the present invention is an apparatus for cutting an object to be machined by using a spark generated due to a discharge phenomenon between a wire and a workpiece A work table 10, a first transfer section 20, a second transfer section 30, and a wire cutting section 40.

The work table 10 includes a table main body 11 provided in the work area, a plurality of feed rollers 12 provided on one side of the bottom surface of the table main body 11, And a support means (13).

The table body 11 is provided in the work area and provides an installation area of the first transfer part 20, the second transfer part 30 and the wire cutting part 40 described later via the upper surface.

A plurality of conveying rollers 12 are provided on one side of the bottom surface of the table main body 11 and serve to freely move the table main body 11 in the work area.

A plurality of fixed holding means 13 are provided on the other side of the bottom surface of the table main body 11 and float the table body 11 and the conveying roller 12 from the ground of the work area during processing of the object to be processed, ) To the work target area.

The fixed support means 13 includes a plurality of hydraulic cylinders 13a provided on the other side of the bottom surface of the table main body 11 and a support plate 13c which is coupled to the cylinder arm of the inflow cylinder 13a, (13b).

The first transferring unit 20 is installed on the upper portion of the work table 10 and includes a first transferring rail 21 and a second transferring rail 21 which are arranged side by side in the front and back direction of the work table 10, 21), and a known LM guide structure can be used.

The first transfer part 20 provides an installation area of the second transfer part 30 to be described later through the upper surface of the first transfer plate 22 and the first transfer plate 22 is mounted on the first transfer rail 21 So that it can move the wire cutting portion 40, which will be described later, when moving the workpiece in the forward and backward direction.

The second conveying unit 30 is installed on the upper portion of the first conveying plate 22 and has a pair of second conveying rails 31 arranged side by side in the lateral direction of the first conveying plate 22, And a second transfer plate 32 movably installed on the upper portion of the transfer rail 31, and a known LM guide structure can be used.

The second conveying unit 30 provides an installation area of the wire cutting unit 40 to be described later through the upper surface of the second conveying plate 22 and the second conveying plate 22 is provided on the second conveying rail 31 So as to move the wire cutting portion 40, which will be described later, in the lateral direction when the object to be processed is machined.

The wire cutting portion 40 cuts the workpiece by using a spark generated due to a discharge phenomenon between the wire and the workpiece. The wire cutting portion 40 includes a support body 41, a first support arm 42, a second support arm 43 and a wire 44.

The support body 41 is vertically installed on the upper portion of the second transfer plate 32 and provides an installation area of a first support arm 42 and a second support arm 43 which will be described later.

The first support arm 42 is vertically extended in the outer direction of the support body so that one end of the first support arm 42 is vertically movable on one side of the support body 41 and the other end is disposed on the outer side of the work table 10 And a first guide roller 42a for guiding one end of the wire 44, which will be described later, is provided at one end of the other end.

The second support arm 43 has one end portion of the one side of the support body 41 that is vertically movable on the upper portion of the first support arm 42 and the other end of which is disposed on the outer side of the work table 10 And a second guide roller 43a extending vertically outwardly of the body 41 and guiding and supporting the other end of a wire 44 described later on one side of the other end.

The first support arm 42 and the second support arm 43 are installed on the support body 41 so as to be vertically movable so as to control the intervals at which the wire 44 described later is installed according to the size of the object to be processed do.

The wire 44 is provided at one end inside the one end of the first support arm 42 and at the other end inside the one end of the second support arm 43. One end and the other end of the wire 44 are connected to the first guide Is supported by the roller 42a and the second guide roller 43a and installed perpendicular to the first support arm 42 and the second support arm 43. [

Such wire may be copper wire, brass wire or tungsten wire.

Although not shown in the drawings, the movable wire electric discharge machining apparatus 1 according to the embodiment of the present invention includes a wire 44 and a separate power supply unit (not shown) do.

As described above, the moving type wire electric discharge machining apparatus 1 according to the embodiment of the present invention has the structure in which the work table 10 is movably installed in the work area and is easily moved to the workpiece, It is possible to easily process a large object to be processed, which is difficult to move in position.

In the mobile wire electric discharge machining apparatus 1 according to the embodiment of the present invention, since the seat part on which the object to be processed is seated is omitted, the device can be downsized.

In the moving type wire electric discharge machining apparatus 1 according to the embodiment of the present invention, the object to be processed provided in the work area due to the first transfer part 20 and the second transfer part 30 is moved forward and backward by the wire cutting part 40 / The workpiece can be processed more precisely due to the method of processing while moving in the lateral direction.

Fig. 3 is a side view of a movable wire electric discharge machining apparatus according to another embodiment of the present invention in a state that the movable wire electric discharge machining apparatus is installed on a workpiece, Fig. 4 is a plan view And Fig. 5 is a view of Fig. 3 as seen from direction A. Fig.

3 to 5, a movable wire electric discharge machining apparatus 1 according to another embodiment of the present invention further includes a first flow preventing portion 50 and a second flow preventing portion 60, Are the same as those of the embodiment of the present invention, so a detailed description thereof will be omitted.

In addition, the movable wire electric discharge machining apparatus 1 according to another embodiment of the present invention does not use fixed holding means for fixing and supporting the work table in one embodiment of the present invention.

The first flow prevention portion 50 is provided between the work table 10 and the object P to which the processing position is determined so that the gap between the work table 10 and the object P is kept constant, To prevent the work table 10 from flowing by fixing the position between the work table 10 and the object P while keeping the processing position of the work table 40 and the work table 10, 52 and a fixing bar 53. [

One end of the interval adjusting bar 51 is inserted into one side of the table body 11 of the work table 10 so as to be slidably engaged and the other end extends outwardly of the work table 10, So that the distance between the work table 10 and the object to be processed P is kept constant so that the processing position of the wire cutting portion 40 is maintained.

The interval adjusting bar 51 has a structure in which one end is inserted into one side of the table main body 11 so as to be slidably engaged with the other so that the interval between the work table 10 and the object P depends on the shape of the object P And a plurality of spacing adjusting holes 51a are formed on one side of the outer surface so as to be spaced apart from each other along the longitudinal direction.

A bracket 11a having a fixing hole 11aa corresponding to the gap adjusting hole 51a is provided at one side of the table main body 11 of the work table 10 and a fixing hole 11aa and a gap adjusting hole 51a A separate fixing pin 11ab is inserted to fix the interval adjusting bar 51 whose interval is adjusted.

The buffer member 52 is formed of a fluid rubber material and is provided at the other end of the gap adjusting bar 51 to serve as a buffer between the object P and the gap adjusting bar 51, So that the object P is prevented from being damaged by the other end of the workpiece P.

The pair of fixing bars 53 are rotatably coupled to the other opposite ends of the gap adjusting bar 51. One side of each of the pair of fixing bars 53 is provided so as to surround the outer surface of the object P, And fixes it to the object P to be processed.

A pair of fixing bars 53 are fastened to each other through a fastening member 54 so as to fix the work table 10 and the object P to be fixed.

5, the second flow preventing portion 60 supports one side of each conveying roller 12 provided below the table main body 11 of the work table 10, And includes a rotation bar 61 and a wedge member 62. [

Each of the pivoting bars 61 is rotatably coupled to one side of the table main body 11 of the work table 10 and has a supporting position in which a wedge member 62 described later supports one side of the conveying roller 12 And to move between the releasing positions for releasing the support of one side of the conveying roller 12.

The wedge member 62 is formed in the shape of a substantially right triangle and is engaged with the other end of the pivoting bar 61 to support the pivoting bar 61 on one side of each of the conveying rollers 12 Thereby preventing lateral movement of the work table 10.

6 (a) and 6 (b) are views for explaining the operation of the first flow preventing portion of the moving type wire electric discharge machining apparatus according to another embodiment of the present invention.

6 (a), when an external force acts on the work table 10 in the direction of the object P, the movable wire electric discharge machining apparatus 1 according to another embodiment of the present invention, The provision of the flow preventing portion 50 prevents the work table 10 from flowing axially and changing the machining position of the wire cutting portion 40.

6 (b), even if a greater external force acts on the work table 10 in the direction of the object P to move the work table 10 and the object P simultaneously, The distance between the work table 10 and the workpiece P is maintained by the gap adjusting bar of the flow preventing portion 50 and the machining position of the wire cutting portion 40 is prevented from being changed.

As described above, the moving type wire electric discharge machining apparatus 1 according to another embodiment of the present invention is configured such that even when an external force acts on the work table 10 in the direction of the object P during processing of the object P, The work table 10 is prevented from being moved from the object P because the work table 10 is provided on the work table 10 so that the work position of the wire cutting section 40 is not changed, The work position of the wire cutting section 40 is changed by the movement of the work table 10, and the work for re-setting the working position of the work table 10 is not required.

7 (a) and 7 (b) are views for explaining the operation of the second flow preventing portion of the moving type wire electric discharge machining apparatus according to another embodiment of the present invention.

As shown in Fig. 7 (a), in the moving type wire electric discharge machining apparatus 1 according to another embodiment of the present invention, when an external force acts on the work table 10 in a direction perpendicular to the object P The fixing bar 53 of the first flow preventing portion 50 for fixing the work table 10 and the object P is broken and the fixed state between the work table and the object P is released, 10 may deviate from the set machining position and the machining position of the wire cutting portion 40 may be changed.

However, the movable wire electric discharge machining apparatus 1 according to another embodiment of the present invention is supported on one side of each of the feed rollers 12 provided at the lower part of the work table 10 as described in Fig. 5, As shown in Fig. 7 (b), the second flow preventing portion 60 for preventing lateral flow of the workpiece 10 is provided on the work table 10, So that the work table 10 is prevented from deviating from the set working position.

As a result, the machining position of the wire cutting portion 40 is not changed, so that the machining accuracy is improved, and the work is not required due to the resetting of the machining position of the work table 10, thereby improving productivity.

Although the present invention has been described in connection with the preferred embodiments, it is possible to make various modifications and variations without departing from the spirit and scope of the invention. It is, therefore, to be understood that the appended claims will include all such modifications and changes as fall within the true spirit of the invention.

1: Movable wire electric discharge machining apparatus 10: Working table
11: table body 11a: bracket
11aa: Fixing hole 11ab: Fixing pin
12: Feed roller 13: Fixing support means
13a: Hydraulic cylinder 13b: Support plate
20: first conveying part 21: first conveying rail
22: first transfer plate 30: second transfer part
31: second conveying rail 32: second conveying plate
40: wire cutting portion 41: support body
42: first support arm 42a: first guide roller
43: second support arm 43a: second guide roller
44: wire 50: first flow prevention portion
51: Spacing bar 51a: Spacing bar
52: buffer member 53: fixed bar
54: fastening member 60: second flow-
61: rotation bar 62: wedge member

Claims (4)

1. A wire cutting apparatus for cutting an object to be processed provided in a work area,
A work table installed in the work area;
A first transfer unit installed on the upper portion of the work table so as to be movable back and forth;
A second conveying unit installed on the upper portion of the first conveying unit so as to be movable left and right;
And a wire cutting part installed on the second transfer part for cutting an object to be processed,
Wherein the work table is movably installed in a work area,
Further comprising a first flow preventive part having one end inserted into the one side of the work table and slidably installed, and the other end fixed to one side of the object to be processed. delete The method according to claim 1,
The work table
And a plurality of feed rollers installed on one side of the lower portion,
Further comprising a second flow preventing portion rotatably coupled to one side of the work table and supported by one side of each of the feed rollers to prevent the flow of the work table. The method according to claim 1,
The wire-
A support body vertically installed on the second conveyance unit;
A first support arm installed on one side of the support body so as to be movable up and down;
A second support arm provided on the upper portion of the first support arm so as to be movable up and down;
And a wire provided between the first support arm and the second support arm.
KR1020150075709A 2015-05-29 2015-05-29 Movable wire-cut discharge machine KR101555952B1 (en)

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Application Number Priority Date Filing Date Title
KR1020150075709A KR101555952B1 (en) 2015-05-29 2015-05-29 Movable wire-cut discharge machine

Publications (1)

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Country Status (1)

Country Link
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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009233842A (en) * 2008-03-28 2009-10-15 Seibu Electric & Mach Co Ltd Wire electric discharge machining method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009233842A (en) * 2008-03-28 2009-10-15 Seibu Electric & Mach Co Ltd Wire electric discharge machining method

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