JP2983518B2 - Processing waste separation equipment for electric discharge machines - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a machining swarf for an electric discharge machine which separates machining swarf generated when a workpiece is subjected to electric discharge machining in a machining fluid in a sinking electric discharge machine or a wire electric discharge machine. It relates to a separation device.

[0002]

2. Description of the Related Art After roughing in a normal working fluid such as oil, powder mixed with a conductive powder of a non-magnetic material, for example, a metal such as chromium or a semimetal such as silicon in the working fluid. 2. Description of the Related Art An electric discharge machining method for performing a finishing process in a machining fluid is known. By this electric discharge machining method, the electric discharge gap becomes relatively large,
Machining debris generated during electric discharge machining is smoothly discharged from the gap between the electrode and the work, and concentrated discharge and abnormal discharge can be prevented, the discharge state is stabilized, and the surface roughness can be improved.

[0003] In some cases, after processing in a powder-mixed working fluid, processing is continued in a normal working fluid. In this case, it is necessary to temporarily recover powder from the powder-mixed working fluid. . However, since the machining chips generated during the electric discharge machining are dispersed in the machining fluid, the powder must be collected while separating the machining chips.

[0004] The following prior art is known as an apparatus for separating processing chips, particularly magnetic processing chips, from a working fluid. Japanese Patent Application Laid-Open No. 6-7 / 1994 discloses a first prior art.
Japanese Patent No. 1195 discloses a method and an apparatus for magnetically coagulating impurities in a liquid. In this processing apparatus, a rotating plate is fixed to a rotating shaft, a magnet is attached to the entire surface of the rotating plate,
An attachment plate made of a nonmagnetic material is provided so as to sandwich the magnet between the rotating plate and the rotating plate. Then, the magnetic sludge is magnetically attracted to the magnet through the adhesion plate in the magnetic coagulation treatment tank,
Magnetic sludge adhering to the adhering plate by the rotation of the rotating plate is scraped off by a scraper and collected.

[0005] A second prior art is Japanese Utility Model 7-3.
In the magnetic adsorption type sludge separation device disclosed in Japanese Patent No. 3882, a magnet is attached to the upper surface of an arc-shaped partition plate, and an annular fin is fixed to a rotating drum so as to slide on both end surfaces of the magnet. Then, the magnetic sludge is magnetically attracted to the magnet through the annular fin in the arc-shaped partition plate, and the magnetic sludge attached to the annular fin is scraped off and collected by the rotation of the rotary drum.

[0006]

The first prior art is configured to rotate a rotating plate on which magnetic sludge is magnetically adsorbed via an adhesion plate and to peel off the magnetic sludge with a scraper. A magnet must be attached to the entire side surface of the rotating plate so that magnetic sludge can be magnetically adsorbed in the liquid in the tank. Therefore, a large number of relatively expensive magnets are required, which increases the manufacturing cost.

In the second prior art, when the annular fin on which the magnetic sludge is adsorbed rotates together with the rotating drum, the magnetic fin separates from the magnet portion at a position passing through the arc-shaped partition plate, so that the magnetic sludge is suspended again. It can fall into the coolant. In addition, since the fin slides on the end face of the magnet, sludge enters between the magnet and the fin and is attracted to the fin, causing wear and seizure of the fin.

SUMMARY OF THE INVENTION An object of the present invention is to solve such problems of the prior art, and a machining chip separation of an electric discharge machine capable of reliably separating and collecting machining chips generated by electric discharge machining from a machining fluid. It is intended to provide a device.

[0009]

SUMMARY OF THE INVENTION An object of the present invention is to dispose an adsorbing member having a magnet attached thereto in a tank, fix the adsorbing member in a tank, and supply a used working fluid containing machining chips made of a magnetic material into the tank. This is achieved by magnetically attracting the processing dust of the magnetic material to the surface of the suction member by the action of magnetism, and scraping the processing waste from the surface of the suction member by a scraper rotating while contacting the surface of the suction member. .

That is, the present invention provides a machining chip separation device for an electric discharge machine for separating machining chips generated when a workpiece is subjected to electric discharge machining in a machining fluid from the machining fluid, the housing being attached to the housing, A tank that receives a used machining fluid containing machining waste of a magnetic material, a rotation shaft rotatably provided with respect to the housing, and fixed inside the tank orthogonal to a rotation axis of the rotation shaft; Previous
A plurality of magnets are fixedly attached in a semi-disc shape to a used processing fluid receiving portion of the tank, and are attached to the rotating shaft, and an adsorbing member for magnetically adhering processing chips of the magnetic material from the used processing fluid And at least one thin plate-shaped scraper that contacts the side surface of the suction member inside the tank by the rotation of the rotation shaft and scrapes off the processing dust of the magnetic material magnetically attracted to the side surface of the suction member. And the rotation of the rotating shaft
The scraper moves in contact with the scraping surface
Then, the magnetic material is applied from the scraping surface of the scraper.
Equipped with a scraping member to scrape off industrial waste and collect it in the processing waste collection box.
The gist of the present invention is a work chip separation device for an electric discharge machine, comprising:

The work chip collecting means contacts the work chip scraping surface of the scraper by the rotation of the rotating shaft, scrapes the work chip of the magnetic material from the work chip scraping surface of the scraper, and collects the work chip. You may have the scraping member discharged to a box. The tank may be formed in a semi-cylindrical shape, and the suction member may be formed in a disk shape or a semi-disk shape.

[0012]

[Function] When a used working fluid containing processing waste of magnetic material flows into the tank and is received, a plurality of magnets are attached,
Work chips are magnetically attracted to both side surfaces of the attracting member fixed inside the tank. The processing waste magnetically attracted to the suction member is attached to a rotating shaft, is scraped off by a scraper in contact with the side surface of the suction member inside the tank by the rotation of the rotating shaft, and is collected by the processing waste collecting means. At this time, the processing liquid is not collected together with the processing waste because it flows down the scraper and falls into the tank.

[0013]

Embodiments of the present invention will be described below with reference to the accompanying drawings. First, referring to FIG. 1 to FIG. 3, a processing chip separation device 10 according to a first embodiment of the present invention.
Is disposed so as to cooperate with a machining tank of an electric discharge machine (not shown). The processing waste separating apparatus 10 includes a housing 12 having a substantially rectangular parallelepiped shape, a semi-cylindrical separation tank 14 provided in the housing 12, and a semi-cylindrical separation tank 14.
A rotating shaft 16 rotatably supported by the housing 12 via a bearing 18 around a central axis of the housing 12, a dirty tank 20 (left side in FIG. 1) disposed on both sides of the separation tank 14 in the housing 12, and Tank 22
(Right side in FIG. 1). Housing 1
Inside 2, a processing waste bucket 24 as a processing waste collection box for collecting separated processing waste is disposed adjacent to the dirty tank 20 and on the opposite side of the separation tank 14.

The dirty tank 20 has a notch 20a as an outlet formed by cutting out the upper end of the side wall adjacent to the separation tank 14. On the other hand, the upper end of the side wall adjacent to the dirty tank 20 in the separation tank 14 is also cut out,
A notch 14a is formed as an inflow port that is continuous with 0a, and a notch 14b is formed as an outflow port at the upper end of the side wall adjacent to the clean tank 22 in the separation tank 14. Further, the separation tank 1 is also provided at the upper end of the side wall adjacent to the separation tank 14 in the clean tank 22.
A notch 22a is formed as an inflow port that is continuous with the fourth notch 14b. Sealing means 15 is provided between the rotating shaft 16 and both side surfaces of the separation tank 14 to prevent leakage of the machining liquid from the separation tank 14.

The dirty tank 20 is connected to a machining tank of the electric discharge machine by a pump and a pipe (not shown).
In other words, the used working fluid in the form of a suspension containing the machining waste responsive to the magnetic action is supplied. In addition to the processing waste made of a magnetic material, a small amount of processing waste made of a non-magnetic material may be included. On the other hand, the clean tank 22 is also connected to the machining tank of the electric discharge machine via a pipe and a pump (not shown), and the machining fluid that has been cleaned by the machining waste separation device 10 and has been cleaned is processed again. It is supplied to the tank.

In the separation tank 14, a plurality of suction plates 26 are provided. The suction plate 26 is formed in a substantially semicircular shape from a magnetic material, and has a separation tank 14 and a rotating shaft 16.
The separation tank 1 is oriented perpendicular to the center axis of
4 and are arranged at equal intervals along the central axis of the rotating shaft 16. A plurality of magnets, preferably permanent magnets 28, are arranged and fixed on the attraction plate 26 in the circumferential direction. More specifically, in the present embodiment, the magnet 28 is
Are inserted and fixed so that the N pole and the S pole face each other in a corresponding mounting hole 26a formed through the position where the permanent magnet 28 is mounted (see FIG. 2). Suction plate 26
A protection plate 30 made of a non-magnetic material is provided on both sides of the magnet so as to sandwich the magnet 28. In the present embodiment, the suction plate 26
The protection member 30 constitutes an adsorption member that adsorbs the processing waste by the action of magnetism. The magnets 28 may be attached to both side surfaces of the suction plate 26 without being embedded in the suction plate 26.

A plurality of scrapers 32 made of a non-magnetic material are provided on the outer peripheral surface of the rotating shaft 16 on both sides of the diameter.
0 is fixed so as to be able to come into contact with the surface. Scraper 32
Is formed in a thin plate shape having a length reaching the outermost in the radial direction about the longitudinal axis of the rotating shaft 16 of the magnet 28, and is generally formed with respect to a tangent at a point of attachment to the rotating shaft 16. It is provided so as to extend in an angular direction from 30 ° to 45 °. When the rotation shaft 16 rotates, the scraper 32 rotates while contacting the surface of the protection plate 30.
The scraper 32 has a front surface with respect to the rotation direction of the rotating shaft 16 serving as a scraping surface 32a for scraping the work chips sucked by the suction member. Here, only one scraper 32 may be provided between the suction units, and the scraper 32 may be configured to simultaneously contact the side surfaces of the adjacent suction units.

A swash plate 34 is disposed at a predetermined angle with respect to the horizontal plane so as to cover the upper end opening of the dirty tank 20. The swash plate 34 is provided at the opening of the dirty tank 20 from above the edge on the side of the separation tank 14, beyond the edge on the side opposite to the separation tank 14 to above the workpiece waste bucket 24. The lower side is fixed to the upper end of the side wall adjacent to the machining waste bucket 24 in the dirty tank 20. A shaft 36 extends parallel to the central axis of the rotating shaft 16 along the edge of the swash plate 34 on the separation tank 14 side, and bearings 36a are provided at both ends.
And is rotatably supported by the housing 12 via the.
A scraping plate 38 is attached to the shaft 36 so as to be rotatable about the shaft 36.

The scraping plate 38 is formed in such a size that it can contact the outer peripheral surface of the rotating shaft 16 from the shaft 36, in particular, the base end where the scraper 32 is attached to the rotating shaft 16. 14 is provided so as to cover the area above the area on the dirty tank 20 side. When the rotating shaft 16 rotates in the counterclockwise direction as shown in FIG. 1 and the scraping plate 38 further engages with the base end of the scraper 32 at its distal end, the rotating shaft 16 continues to rotate. The take-up plate 38 rotates in a counterclockwise direction about the shaft 36 while engaging with the scraping surface 32a of the scraper 32 and gradually competes. When the tip of the scraping plate 38 reaches the tip of the scraper 32, the rotating shaft 16 and the scraper 32
Continues to rotate, the scraper 32 and the scraper plate 38 are disengaged from each other, and the scraper plate 38 is supported by the lower end of the scraper 32 at the tip thereof in a clockwise direction about the shaft 36. And engages with the rotating shaft 16 again at the tip.

The operation of the first embodiment will be described below.
As described above, the used working fluid in the form of a suspension containing magnetic machining chips is supplied from the machining tank of the electric discharge machine to the dirty tank 20. The supplied used processing liquid is stored in a dirty tank 20 where a certain amount of processing waste is separated by sedimentation, and the finished liquid passes through an outlet 20 a of the dirty tank 20 and enters an inlet 14 a of the separation tank 14. Flows into the separation tank 14. The working fluid that has flowed into the separation tank 14 flows below the rotating shaft 16 and flows toward the clean tank 22. During this time, the processing chips dispersed in the processing liquid are adsorbed on the surface of the protection plate 30 by the magnetic action of the magnet 28 and separated from the processing liquid as described below.

The rotation of the rotating shaft 16 causes the scraper 32 to rotate while contacting the surface of the protection plate 30, and scrapes the work debris adsorbed on the surface of the protection plate 30 onto the surface of the scraper 32. The scraped-up work chips adhere to the scraper 30 and travel around the rotation shaft 16 together with the scraper 32. At this time, the scraps scraped off by the scraper 32 have an adhesive property.
Is almost vertical, it hardly falls or drops from the scraper 32. When the base end of the scraper 32 engages with the tip of the scraper plate 38, the scraper plate 38 rotates counterclockwise in FIG. 1 while contacting the scraping surface 32a of the scraper 32 at the tip. To start. When the rotating shaft 16 and the scraper 32 further rotate, the scraping plate 38 races along the scraper 32 while scraping off the processing chips attached to the scraping surface 32a of the scraper 32 at its tip. The processing waste scraped off from the scraping surface 32a of the scraper 32 is temporarily deposited on the surface of the scraping plate 38, but the amount of the processing waste deposited on the scraping plate 38 becomes a fixed amount, and the scraping plate 38 1 moves while rotating in the counterclockwise direction in FIG. 1, moves to the swash plate 34 by the action of gravity, and then moves and drops to the work waste bucket 24 also by the action of gravity and deposits there. .

In this way, the used machining fluid supplied to the machining waste separating device 10 is supplied to the magnet 2 in the separation tank 14.
The surface of the protection plate 30 is attracted to the surface of the protection plate 30 by the magnetic action of 8, and then is scraped off from the surface of the protection plate 30 by the scraping surface 32a of the scraper 32 which rotates together with the rotary shaft 16, and is separated from the working fluid. The separated work chips are scraped off from the scraping surface 32 a by the scraping plate 38, and finally deposited in the work chip bucket 24 via the upper surface of the swash plate 34. The processing liquid from which the processing waste has been separated flows into the clean tank 22 through the outlet 14b of the separation tank 14 and the inlet 22a of the clean tank 22 as a clean processing liquid. The machining fluid stored in the clean tank 22 is circulated again to the machining tank of the electric discharge machine via the pump and the pipe (not shown) as described above.

Next, a second embodiment of the present invention will be described with reference to FIGS. The machining waste separation device 40 according to the second embodiment of the present invention includes a housing 42 having a substantially rectangular parallelepiped shape, a separation tank 44 provided in the housing 42 having an arcuate cross section, and a bearing 48 around a central axis of the separation tank 44. A rotation shaft 46 rotatably supported by the housing 42 through the separation tank 44 inside the housing 42
And a clean tank 52 provided on one side of the tank. In the housing 42, a processing waste bucket 54 as a processing waste collection box for collecting separated processing waste is provided adjacent to the clean tank 52.

In the separation tank 44, the clean tank 5
The upper end adjacent to 2 is cut out to form a cutout 44a as an outlet. Sealing means 56 is provided between the rotating shaft 46 and both side surfaces of the separation tank 44,
Leakage of the working fluid from the separation tank 44 is prevented. Further, an overflow port 44b is formed in the separation tank 44 to prevent the processing liquid from overflowing from the separation tank 44 to the clean tank 52 without separating the processing chips. It goes without saying that the machining fluid overflowing from the overflow port 44b is collected by a machining fluid supply device and other devices via a pipe (not shown).

On the side wall 42b of the housing 42 opposite to the clean tank 52 with the separation tank 44 interposed therebetween, there is formed a working fluid inlet opening 42a for introducing used working fluid into the processing waste separation device 40. . Further, in order to prevent the processing liquid introduced into the housing 42 from the processing liquid inlet opening 42a from scattering in the housing 42, a shroud or weir 50 faces the processing liquid inlet opening 42a in the housing 42. It is arranged as follows. The weir 50 is made of a sheet metal member having a substantially C-shaped cross section as shown in FIG. 4, and has a side wall for flowing the processing liquid introduced from the processing liquid inlet opening 42a along the inner surface of the side wall 42b. A gap 50a is formed between the gap 50a and the gap 42a.

Immediately below the weir 50 in the housing 42, a machining fluid receiving unit 6 for receiving the machining fluid from the weir 50 is provided.
0 is provided. The machining fluid receiving part 60 is provided in the separation tank 4
4 and has a guide side wall 60 a for guiding the working liquid to the separation tank 44.

A machining fluid inlet opening 42a is connected to a machining tank of the electric discharge machine by a pump and a pipe (not shown), and the clean tank 52 is also connected to the machining tank of the electric discharge machine through a pipe and a pump (not shown). The connection to the processing tank is the same as in the first embodiment.

In the separation tank 44, a plurality of suction plates 58 are provided. The suction plate 58 is formed in a circular shape from a magnetic material, is oriented perpendicularly to the center axis of the separation tank 44 and the rotation shaft 46, and is equally spaced along the center axis of the separation tank 44 and the rotation shaft 46. Are located in As in the first embodiment, a plurality of magnets, preferably permanent magnets 62, are arranged and fixed to the attraction plate 58 in the circumferential direction. A protection plate 64 made of a non-magnetic material is provided on both sides of the suction plate 58 so as to sandwich the magnet 62. Similarly to the first embodiment, the suction plate 58 and the protection plate 64 constitute a suction member that sucks the processing waste by the action of magnetism. It goes without saying that the magnets 62 may be attached to both side surfaces of the attraction plate 58 without being embedded in the attraction plate 58.

A plurality of scrapers 66 made of a non-magnetic material are provided on both sides of the outer peripheral surface of the rotating shaft 46 with the diameter therebetween.
8 is fixed so as to be able to contact the surface. Scraper 66
Has a length whose end reaches the radially outermost center of the longitudinal axis of the rotating shaft 46 of the magnet 62.
The tip of the member extends in an angle direction of about 30 ° to 45 ° with respect to a tangent at a point of attachment to the rotating shaft 46. When the rotation shaft 46 rotates, the scraper 66 rotates while contacting the surface of the protection plate 64. The scraper 66 has a front surface with respect to the rotation direction of the rotating shaft 46, which serves as a scraping surface 66a for scraping the work chips sucked by the suction member. Here, in FIG. 5, the four inner scrapers are formed by a single member having a forked or forked tip, and one scraper is provided between each of the suction means and adjacent to each other. It is good also as a structure which contacts each side of an adsorption | suction means simultaneously.

Between the separation tank 44 and the processing waste bucket 54, the upper end opening of the clean tank 52 is covered.
The swash plate 68 is disposed at a predetermined angle with respect to the horizontal plane. The swash plate 68 lowers the processing waste bucket 54 side from above the edge of the separation tank 44 to above the processing waste bucket 54, and the clean tank 5
2 fixed to the upper end of the side wall. Further, the swash plate 68 has a front hanging portion 68a extending in an arc shape with substantially the same radius as the separation tank 44 in the separation tank 44 from its top. Preferably, the scraper 66 has a length such that the tip point 66b contacts the surface of the front hanging portion 68a.

A shaft 70 is provided between the swash plate 68 and the separation tank 44.
Extend parallel to the center axis of the rotating shaft 46, and at both ends of the housing 42 via bearings 74.
It is supported rotatably. A scraping plate 72 is rotatably attached to the shaft 70 about the shaft 70. The scraping plate 72 has a length capable of contacting the base end portion 66c of the scraper 66 or its vicinity, and is suspended from the shaft 70.

The rotating shaft 46 is rotated clockwise as shown in FIG. 4 so that the scraping plate 72 has its tip at the base end 66c of the scraper 66 or the scraping surface 66a near the scraper 66.
After the rotation shaft 46 further rotates after engaging with the swash plate, the scraping plate 72 rotates in the clockwise direction about the shaft 70 while engaging with the scraping surface 66a of the scraper 66 to rotate the swash plate. He is gradually competing for the top of 68. If the rotating shaft 46 and the scraper 66 continue to rotate when the tip of the scraper 72 reaches the tip of the scraper 32, the scraping surface 66a of the scraper 66 and the scraper 7
2 is released, and the scraping plate 72 rotates counterclockwise about the shaft 70 with the lower surface supported by the tip of the scraper 66.

The operation of the second embodiment will be described below.
As described above, the used working fluid in the form of a suspension containing magnetic machining waste is supplied to the machining fluid inlet opening 42a of the machining waste removal device 40 from the machining tank of the electric discharge machine. The supplied used working fluid flows down to the working fluid receiving surface 60 through a gap 50a between the weir 50 and the side wall 42b. The working fluid flows from the receiving surface 60 into the separation tank 44, and then flows from the notch 44 a to the clean tank 52. During this time, the processing chips dispersed in the processing liquid are removed from the magnet 62 as described below.
Is attracted to the surface of the protection plate 64 and separated from the working fluid.

The rotation of the rotary shaft 46 causes the scraper 66 to rotate while contacting the surface of the protection plate 64, and scrapes the work chips adsorbed on the surface of the protection plate 64 onto the scraping surface 66 a of the scraper 66. The scraped-up work chips adhere to the scraper 66 and travel around the rotation shaft 46 together with the scraper 66. When the base end 66c of the scraper 66 engages with the tip of the scraper 72, the scraper 72 rotates clockwise in FIG. 4 while contacting the scraping surface 66a of the scraper 66 at the tip. To start. When the rotating shaft 46 and the scraper 66 further rotate, the scraping plate 72 is moved at its tip by the scraping surface 6 of the scraper 66.
6a while scraping off the processing debris attached to the scraper 6a.
Compete along 6. With the rotation of the rotating shaft 46, the tip of the scraping plate 72 moves to the tip point 66b of the scraper 66 along the scraping surface 66a of the scraper 66, so that the processing dust adhering to the scraping surface 66a is scraped. The plate 72 pushes the scraper 66 toward the tip. At this time, the tip 66b of the scraper 66 is
Since it rotates while being in contact with 8 a, the processing waste pushed out to the tip point 66 b of the scraper 66 by the scraping plate 72 does not fall from the scraper 66.

The used machining fluid supplied to the machining waste separation device 40 is supplied to the magnet 6 in the separation tank 44.
Due to the magnetic action of 2, it is adsorbed on the surface of the protection plate 64, and is then scraped off from the surface of the protection plate 64 by the scraping surface 66a of the scraper 66 rotating together with the rotating shaft 46, and separated from the working fluid. The separated work chips are scraped off from the scraping surface 66 a by the scraping plate 72, and finally deposited in the work chip bucket 54 via the upper surface of the swash plate 68. The processing liquid from which the processing waste has been separated flows to the clean tank 52 via the outlet 44a of the separation tank 44 as a clean processing liquid. The processing fluid stored in the clean tank 52 is:
As described above, the fluid is circulated again to the machining tank of the electric discharge machine via the pump and the pipe (not shown). Even if the processing liquid contains a small amount of non-magnetic processing debris, the magnet 62 or the magnet 32 of the first embodiment has a sufficiently large magnetic force, thereby condensing the magnetic processing debris. Can be adsorbed together.

[0036]

According to the present invention, a used machining fluid containing machining dust is supplied into a tank, and the machining dust in the machining fluid is absorbed by a plurality of magnets including a plurality of magnets. Magnetically attracted to the member, then scraped off the attracting member by a rotating scraper and separated from the working fluid. Therefore, since it is sufficient to dispose the magnet only in the tank, it is possible to reduce the number of relatively expensive magnets and reduce the manufacturing cost. Further, the processing waste scraped off by the rotation of the scraper can be surely separated and collected without falling into the tank again.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a machining waste separation device of an electric discharge machine according to a first embodiment.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB in FIG. 1;

FIG. 4 is a side sectional view of a machining waste separation device of an electric discharge machine according to a second embodiment.

FIG. 5 is a cross-sectional view taken along line CC of FIG. 4;

FIG. 6 is a cross-sectional view taken along a line DD in FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Work waste separation apparatus 12 ... Housing 14 ... Separation tank 16 ... Rotating shaft 20 ... Dirty tank 22 ... Clean tank 24 ... Work waste bucket 26 ... Suction plate 28 ... Magnet 30 ... Protective plate 32 ... Scraper 34 ... Swash plate 38 ... Scraping plate 40 ... work waste separating device 42 ... housing 44 ... separation tank 46 ... rotary axis 52 ... clean tank 54 ... work waste bucket 58 ... adsorption plate 62 ... magnet 64 ... protection plate 66 ... scraper 68 ... swash plate 72 ... scratch Board

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-285313 (JP, A) JP-A-6-71195 (JP, A) JP-A 62-156314 (JP, U) JP-A 3-156314 105904 (JP, U) Registered Utility Model 3020161 (JP, U) Japanese Patent Publication No. Hei 3-8802 (JP, B2) Japanese Utility Model Hei 8-4116 (JP, Y2) Japanese Utility Model Hei 7-33882 (JP, Y2) (58) ) Surveyed field (Int.Cl. ⁶ , DB name) B03C 1 / 02,1 / 14,1 / 28 B23H 7/36 B23Q 11/00

Claims (2)

(57) [Claims] 1. A machining chip separation device of an electric discharge machine for separating machining chips generated when a workpiece is subjected to electric discharge machining in a machining fluid from the machining fluid, comprising: a housing; A tank for receiving a used machining liquid containing machining waste, a rotation shaft rotatably provided with respect to the housing, and fixed inside the tank at right angles to a rotation axis of the rotation shaft . A plurality of magnets are fixedly attached in a semi-disc shape to a receiving portion of the used machining fluid, and an attracting member magnetically attracts machining debris of the magnetic material from the used machining fluid; and At least one thin plate-shaped member attached to the tank and in contact with the side surface of the suction member inside the tank by the rotation of the rotation shaft to scrape off the processing dust of the magnetic material magnetically suctioned to the side surface of the suction member School Processing of the scraper to move the over path by rotation of said rotary shaft
In contact with the dust scraping surface and forward from the scraping surface of the scraper
Scrap the processing waste of the magnetic material and collect it in the processing waste collection box
A machining waste separation device for an electric discharge machine, comprising: machining waste collection means having a scraping member . Wherein said tank is formed into a semi-cylindrical shape, the suction member is electric discharge machine processing refuse separation apparatus according to claim 1 comprising a disk shape or a semi-disc shape.