TW201507794A - Slag suction device of electrical discharge machining - Google Patents

Abstract

A slag suction device of electrical discharge machining includes an effluent adaptor, an influent adaptor and a slag suction conduit. The effluent adaptor has a room capacity. The top surface of the room capacity defines a first coupling hole passing through to the room capacity. The lateral surface of the room capacity defines a second coupling hole passing through to the room capacity. The bottom surface of the room capacity defines an effluent hole, where the effluent hole and the room capacity are connected by a smaller size through-hole. The influent adaptor is joined to the first coupling hole, where the bottom end of the influent adaptor has a water injection conduit with a smaller outside diameter extending to the room capacity. The influent adaptor has a penetrating influent runner, which includes an opening inlet section that is extended to the top surface of the room capacity, an opening exit section that has a smaller size extended to the bottom end surface of the room capacity, and a pyramidal joint section that is used to connect the inlet section and the exit section. The slag suction conduit is hollow and has openings at two terminals. One terminal is connected to the second coupling hole, while the other terminal is extended to the working place of electrical discharge machine.

Description

Electroslag slag suction device

The present invention relates to a technical field of electrical discharge machining, and more particularly to a slag suction device capable of rapidly extracting residues such as carbon deposits, metal chips, and the like which are generated by electrical discharge machining to avoid electrical discharge machining which affects processing quality.

Conventional electric discharge machining, as shown in Taiwan Patent Publication Nos. 134743 and 177528, which deposits carbon deposits, metal chips, etc., which are generated during electrical discharge machining, are naturally deposited at the bottom of the processing tank, and then It is discharged into a working fluid storage tank by a discharge pipe.

However, the sinking speed of the deposits such as carbon deposits, metal chips, etc. which are generated by the conventional electric discharge machining by natural deposition is very slow, in particular, it is easy to adhere to the surface of the workpiece and to deposit the workpiece. The top surface, the depression, and the processing groove are in the position, so that it is not only easy to affect the electric discharge machining, but also causes the processing size of the workpiece to be inaccurate, and it relies only on carbon deposits, metal chips, etc. Deposited to the bottom of the processing tank and then discharged by the discharge pipe, only the residue at the nozzle where the processing tank meets the discharge pipe can be discharged, and the residue on the workpiece is not discharged. Gradually accumulate, when it accumulates to a certain extent, it will cause serious pollution to the workpiece, and it will also have a very large impact on the quality of EDM.

Conventional electric discharge machines have problems such as carbon deposits and metal chips generated during electric discharge machining, which cannot be immediately discharged from the processing tank, and thus easily affect the quality of electric discharge machining.

The invention provides an electric discharge processing slag suction device, which comprises a water outlet joint, a water inlet joint and a slag suction tube. Wherein, the outlet of the outlet joint has a chamber, the upper end surface has a first coupling hole penetrating into the chamber, the side surface has a second coupling hole penetrating into the chamber, and the lower end surface has a water outlet hole, and the water outlet hole The water outlet hole communicates with the chamber with one of the smaller apertures. The water inlet joint is coupled in the first joint hole, and has a smaller outer diameter at a lower end thereof and extends to a water injection pipe of the chamber, and the inside of the water inlet joint has a water inlet passage penetrating through the two ends, The inlet flow passage includes an inlet section, an outlet section and a connecting section. The inlet section extends to an upper end surface having an opening shape, the outlet section has an aperture smaller than the inlet section and extends to the lower end surface of the water injection pipe to be open and facing the through hole, the connection section connecting the inlet section and the outlet Segment, and the upper and lower cones. The slag suction pipe is a hollow tubular body open at both ends, one end of which is coupled to the second joint hole and the other end of which extends to a processing position of an electric discharge machine.

When the slag suction device provided by the present invention is injected into the inlet portion of the inlet passage of the water inlet joint, the machining fluid can form a current collecting and accelerating speed through the tapered connecting portion. Then, the outlet section is sprayed into the through hole of the water outlet joint and then flows out through the water outlet hole, so that the air in the chamber and the slag suction pipe connected thereto can be separated by the "white effort law". The processing fluid flows out, Further, the other end of the slag-sucking pipe sucks the machining liquid at the processing position of the electric discharge machine into the chamber and flows out from the water outlet hole, so that the carbon deposit, the metal scrap, and the like generated during the electric discharge machining are discharged. It will be promptly sucked out with the processing liquid to avoid affecting the progress of the electric discharge machining, and it is also possible to prevent the carbon deposits, metal chips, etc. generated during the electric discharge machining from contaminating the discharge due to excessive deposition. The processed material in the processing tank of the processing machine affects the processing quality thereof.

In the present invention, the EDM device may further include a flow guiding block. The flow guiding block is coupled to the inlet section of the inlet flow passage, and has a plurality of flow guiding grooves spirally extending through the circumferential surface of the inlet flow passage, and the plurality of flow guiding grooves are matched with the hole wall of the inlet section And a plurality of spiral flow paths are formed. The plurality of spiral flow passages can increase the flow rate of the passing working fluid, so that the flow velocity and strength of the water discharged from the water outlet section of the inlet passage of the water inlet joint can be increased, thereby increasing the slag absorption accordingly. The suction of the tube is such that it can further provide the efficiency of sucking off carbon deposits, metal chips, and the like.

10‧‧‧Water connection

11‧‧ ‧ room

12‧‧‧ first joint hole

13‧‧‧Second junction hole

14‧‧‧Water outlet

15‧‧‧through hole

16‧‧‧ bell mouth

17‧‧‧Linking Department

20‧‧‧ water inlet joint

21‧‧‧Water injection pipe

22‧‧‧Inlet runner

23‧‧‧ Entrance section

24‧‧‧Exit section

25‧‧‧ Connection section

30‧‧‧Fixed nuts

40‧‧‧ diversion block

41‧‧‧ Diversion trench

50‧‧‧Slag suction pipe

51‧‧‧External thread section

60‧‧‧ machining slot

61‧‧‧Outlet

62‧‧‧Processing fluid storage tank

63‧‧‧ water inlet

630‧‧‧First control valve

64‧‧‧ pump

65‧‧‧Connecting tube

66‧‧‧Filter

67‧‧‧ branch

670‧‧‧Second control valve

68‧‧‧Draining tube

680‧‧‧third control valve

Figure 1 is a perspective exploded view of the present invention.

Figure 2 is a schematic enlarged view of the three-dimensional combination of the present invention.

Figure 3 is a schematic cross-sectional view of the combination of the present invention.

Figure 4 is a schematic view showing the state of use of the present invention.

Figure 5 is another embodiment of the present invention.

Referring to FIGS. 1 to 3, the slag suction device according to the present invention includes a water outlet joint 10, a water inlet joint 20, two fixed nut 30, a flow guiding block 40, and a slag slag. Tube 50. Wherein: the water outlet joint 10 has a chamber 11 therein, the upper end surface has a first coupling hole 12 penetrating into the chamber 11, the side surface has a second coupling hole 13 penetrating into the chamber 11, and the lower end surface has A water outlet hole 14 is formed, and the water outlet hole 14 communicates with the chamber 11 through a through hole 15 having a small aperture, and the through hole 15 has a hole diameter of about 5.5 mm. The first coupling hole 12 is provided with an internal thread on the wall of the hole, and the second coupling hole 13 is also provided with an internal thread on the hole wall. The upper end opening of the through hole 15 is formed with a bell mouth 16 which is large and small. Further, the lower half of the water outlet joint 10 is formed as one of the smaller outer diameter joint portions 17.

The water inlet joint 20 has a peripheral surface provided with an external thread for being screwed into the first joint hole 12, and a lower end thereof has a smaller outer diameter and extends to one of the water injection pipes 21 of the chamber 11. The inlet of the water inlet joint 20 has an inlet flow passage 22 extending through one end, and the inlet passage 22 includes an inlet section 23, an outlet section 24 and a connecting section 25. The inlet section 23 extends to the upper end surface in an open shape, the outlet section 24 has a smaller aperture than the inlet section 23, and has a diameter of about 3 mm, and the outlet section 24 extends to the lower end surface of the water injection pipe 21 to be open. The through hole 15 is connected to the lower end of the inlet section 23 and the upper end of the outlet section 24, and has a tapered shape which is large and small, so that the effect of collecting current increase can be generated. Moreover, the water inlet joint 20 can be screwed with the internal thread of the hole wall of the first joint hole 12 by a thread other than the circumferential surface so that the lower end of the nozzle tube 21 and the through hole 15 can be Adjust the upper end to the most suitable distance.

The two fixing nuts 30 are screwed on the water inlet joint 20 in a stacked manner, and the bottom surface of the lower fixing nut 30 is abutted against the upper end surface of the water outlet joint 10, thereby fixing the water inlet joint 20 to the water inlet joint 20 The water outlet connector 10 is in place.

The flow guiding block 40 is coupled to the inlet section 23 of the water inlet flow passage 22, and has a plurality of flow guiding grooves 41 which are spirally and penetrate to both end faces, and the plurality of flow guiding grooves 41 are fitted The wall of the inlet section 23 forms a plurality of spiral channels which provide an effect of increasing the flow rate and strength of the passing water stream.

The slag suction pipe 50 is a tubular body which is hollow and has an open end and can be bent and deformed arbitrarily. One end of the slag suction pipe 50 has an externally threaded section 51 for screwing with the thread in the second coupling hole 13. Hehe.

Referring to Fig. 4, it is pointed out that the other end of the slag suction pipe 50 opposite to the externally threaded section 51 extends into the machining groove 60 of the electric discharge machine and is close to the machining position. The connecting portion 17 of the water outlet joint 10 is connected to an outlet pipe 61, and the other end of the outlet pipe 61 extends into a machining fluid storage tank 62. An inlet pipe 63 is connected to one end of the water inlet connector 20, and a pump 64 is connected to the other end of the inlet pipe 63. The other end of the pump 64 is connected to a pipe through a connecting pipe 65. The filter 66 is disposed in the machining fluid storage tank 62, and the inlet pipe 63 is provided with a first control valve 630 for controlling whether the machining fluid flows into the water inlet joint 20. The pump 64 is additionally provided with a tube 67 for introducing the machining fluid into the machining tank 60, and the branch pipe 67 is provided with a second control valve 670 for controlling whether the machining fluid flows into the machining tank 60. In addition, one side of the processing tank 60 is connected with a discharge pipe 68 connected to the machining fluid storage tank 62 for the machining tank 60 to reach a certain The processing liquid of the water level is discharged into the working fluid storage tank 62 to maintain the working fluid in the processing tank 60 at an appropriate water level. The discharge pipe 68 is provided with a third control valve 680 for controlling whether the working fluid flows in. The working fluid is stored in the tank 62.

Thus, after the pump 64 extracts the machining fluid in the machining fluid storage tank 62 through the filter 66, the inlet water pipe 63 can be used to drive the machining fluid into the water inlet joint 20, and the branch pipe 67 can be utilized. The machining fluid is driven into the processing tank 60. When the machining fluid enters the water inlet joint 20 (please refer to FIG. 3), it can be generated by the plurality of spiral flow passages formed on the flow guiding block 40. Increasing the effect of the flow rate and the intensity, and then further transmitting the effect of the current collecting speed through the tapered connecting portion 25 of the inlet flow passage 22, so that the rapid and powerful water column is ejected from the outlet portion 24 into the through hole 15, The bell mouth 16 at the upper end of the through hole 15 can collect the water column in its entirety. When the water column is flushed into the through hole 15, the air in the chamber 11 and the slag suction tube 50 communicating therewith can be flowed out from the water outlet hole 14 by the "white working law", and then The water outlet pipe 61 leads to the machining fluid storage tank 62, so that the other end of the slag suction pipe 50 sucks the machining fluid at the processing position in the machining tank 60 into the chamber 11 and is discharged from the outlet pipe 61. In the machining liquid storage tank 62, the residue such as carbon deposits, metal chips, and the like generated by the electric discharge machining is quickly sucked out along with the machining liquid and discharged into the machining liquid storage tank 62 to prevent the influence thereof. The electric discharge machining is performed, and it is also possible to prevent the residue such as carbon deposits, metal chips, and the like which are generated during the electric discharge machining from being deposited in the machining tank 60 and contaminating the workpiece, thereby affecting the processing quality thereof. The processing liquid in which the residue such as carbon deposits, metal chips, and the like is mixed in the working fluid storage tank 62 is filtered by the filter 66 to be a clean working fluid for pumping the pump 64. The water inlet joint 20 and the processing tank 60 are again provided for recycling to save costs.

Referring to FIG. 5, it is another embodiment of the present invention, and its structure is substantially the same as that of the above embodiment. The difference is that the peripheral surface of the joint portion 17 of the water outlet connector 10 of the present embodiment is provided with an external thread. The outlet pipe 61 is screwed (please refer to Figure 4).

In the present invention, when the water flow of the machining fluid that the pump 64 drives into the water inlet joint 20 is fast enough and strong, the water guiding joint 20 may not be provided with the flow guiding block 40, but only by the The tapered connecting section 25 of the inlet flow passage 22 has the effect of collecting the speed increasing, so that the water column sprayed into the through hole 15 by the outlet section 24 has sufficient speed and strength, which will not be further described.

10‧‧‧Water connection

11‧‧ ‧ room

12‧‧‧ first joint hole

13‧‧‧Second junction hole

14‧‧‧Water outlet

15‧‧‧through hole

16‧‧‧ bell mouth

17‧‧‧Linking Department

20‧‧‧ water inlet joint

21‧‧‧Water injection pipe

22‧‧‧Inlet runner

23‧‧‧ Entrance section

24‧‧‧Exit section

25‧‧‧ Connection section

30‧‧‧Fixed nuts

40‧‧‧ diversion block

41‧‧‧ Diversion trench

50‧‧‧Slag suction pipe

51‧‧‧External thread section

Claims (10)

An electric discharge machining slag suction device comprises: a water outlet joint having a chamber inside, an upper end surface having a first joint hole penetrating into the chamber, and a side surface having a second joint hole penetrating into the chamber; The lower end surface has a water outlet hole, and the water outlet hole and the chamber communicate with one of the smaller apertures; a water inlet joint is coupled in the first joint hole, and the lower end has a smaller outer diameter and Extending into a water injection pipe of the chamber, the inlet of the water inlet joint has an inlet flow passage penetrating through the two ends, the inlet water flow passage includes an inlet section, an outlet section and a connecting section, and the inlet section extends to the upper end surface Opened, the outlet section has a smaller diameter than the inlet section, and the lower end surface of the water injection pipe is open and facing the through hole, and the connecting section connects the inlet section and the outlet section, and is large The lower slag tube; and a slag suction tube are hollow and open ends, one end of which is coupled to the second joint hole and the other end of which extends to a processing position of the electric discharge machine. The slag suction device according to claim 1, further comprising a flow guiding block coupled to the inlet section of the inlet flow passage, the peripheral surface of which has a spiral shape and penetrates into two a plurality of flow guiding grooves of the end face, the complex flow guiding grooves being matched with the hole walls of the inlet section to form a plurality of spiral flow channels. The slag suction device according to claim 2, further comprising a plurality of fixing nuts, wherein the first coupling hole has an internal thread on the wall of the hole, and the circumferential surface of the water inlet connector is provided with An external thread is screwed to the internal thread of the first coupling hole, and the plurality of fixing nuts are screwed on the water inlet joint. The slag-removing device according to claim 1 or 2 or 3, wherein the second coupling hole has an internal thread on the hole wall, and one end of the slag-receiving tube has an externally threaded portion for The internal thread of the second coupling hole is screwed. The slag suction device according to claim 1 or 2 or 3, wherein the slag suction pipe system is arbitrarily bendable. The slag-removing device according to claim 1 or 2 or 3, wherein the upper end opening of the through hole is formed by one of a large and a small bell mouth. The slag suction device according to claim 1 or 2 or 3, wherein the lower half of the water outlet joint forms a joint portion of a smaller outer diameter, and the joint portion is connectable to an outlet pipe, the outlet pipe The other end extends into a processing fluid storage tank. The slag suction device according to claim 7, wherein the peripheral surface of the joint portion is provided with an external thread. The slag-removing device of the electric discharge machining according to claim 7, wherein one end of the water inlet joint away from the water outlet joint is connected with an inlet pipe, and the other end of the inlet pipe is connected with a pump, and the other pump is One end is connected to a filter through a connecting pipe, and the filter is suspended in the working fluid storage tank. The slag suction device according to claim 1 or 2 or 3, wherein the through hole has a diameter of 5.5 mm, and the outlet portion of the inlet passage has a diameter of 3 mm.