JP2007075958A5 - - Google Patents

Description

Surface processing nozzle device

The present invention, by forming a liquid layer in the gas, such as air, relates workpiece burr line of the Hare table surface processing nozzle device up of (work), in particular, media and the liquid consisting of particles of a resin The media mixture is mixed and sprayed from the nozzle head, a liquid layer is generated on the surface of the workpiece to be processed, and high pressure water is sprayed on the liquid layer to accelerate the media and deburr the workpiece surface. accuracy with good rows of the Hare table surface processing nozzle device.

Conventionally, the submerged surface processing apparatus injects high-pressure water in a tank tank containing a mixed liquid of media and water and uses the negative pressure and impact force to remove the medium from the workpiece. The base was adjusted and deburred by spraying and colliding with the processed surface.
7A and 7B show an embodiment according to a conventional submerged surface processing apparatus and processing method, wherein FIG. 7A is an overall view and FIG. 7B is an enlarged view of a nozzle.
As shown in FIGS. 7A and 7B, the submerged surface processing apparatus 50 is placed in a tank 51 containing an abrasive mixed liquid 67 and the abrasive mixed liquid 67 in the tank 51. A nozzle device 54 that injects the machining fluid 56 at a high pressure toward the workpiece surface 61 of the workpiece 60 that has been processed, a drive mechanism (not shown) that moves the nozzle device 54 relative to the workpiece surface 61, and a nozzle device And a stirring device 59 for uniformly dispersing the abrasive 53 in a liquid (abrasive mixed liquid) 67 in the tank 51. The workpiece 60 is placed and fixed on the gantry base 62 by a clamp 63 at a predetermined position in the abrasive mixed liquid 67.

A nozzle 55 is attached to the tip of the nozzle device 54 installed above the tank 51. The nozzle 55 injects the processing fluid 56 at a high pressure toward the processing target surface 61 of the workpiece 60 in the abrasive mixed liquid 67. At this time, in the abrasive mixed liquid 67 mixed with the abrasive 53 that is the medium, the processing fluid 56 sprayed at a high pressure from the nozzle 55 generates a negative pressure in the surrounding liquid, The existing abrasive 53 particles are entrained in the jet and collide with the machining fluid 56 against the surface 61 to be machined. As a result, in addition to the cavitation effect of the jet flow, the blasting effect by the abrasive 53 is added to generate a powerful processing force and perform surface processing. This surface processing is performed at a predetermined medium mixing concentration of the abrasive mixed liquid 67 (see, for example, Patent Document 1).
JP 2002-113663 A (see pages 3 to 4)

  However, according to the conventional example, unless the abrasive mixed liquid 67 is constantly stirred, the concentration of mixed media becomes unstable and difficult to manage.

The present invention has been made to solve such a problem, stable media supply and to allow easy media concentration control, the front surface Ru possible to obtain a uniform working surface machining It is an object to provide a nozzle device.

The invention according to claim 1 is a front surface processing nozzle device, and the media mixed fluid ejection nozzle for ejecting toward the media mixture to the processing target surface, disposed to the media mixture injection nozzle coaxial direction, wherein toward processing target surface, with a nozzle head with a high pressure fluid jet nozzle for ejecting a pressurized fluid to a high pressure, a front surface processing nozzle apparatus that is used in the air, the media mixture injection The nozzle injects the media mixed liquid into an injection region of the high pressure fluid ejected from the high pressure fluid injection nozzle and the periphery of the injection region, and generates a liquid layer of the media mixed liquid accelerated by the high pressure fluid. It is characterized by doing.

The invention according to claim 2 is the front surface processing nozzle according to claim 1, and the nozzle head, characterized by relatively moving the said processing target surface.

The invention according to claim 3, a front surface processing nozzle according to claim 1, wherein the high pressure fluid ejecting nozzles is provided with a plurality of injection holes, it can be rotated about the axis of the high pressure fluid jet nozzle It is characterized by.

The invention according to claim 4, a front surface processing nozzle according to claim 1, keeping constant the concentration after once separating the used of the media mixture to the media and the liquid, the media mixture A media supply unit for supplying to the ejection nozzle is provided.

Invention, wherein a front surface processing nozzle according to claim 1, wherein the media mixed fluid ejection nozzle and said high pressure fluid ejecting nozzles being arranged to overlap concentrically according to claim 5 And

Invention relates to a front surface processing nozzle according to claim 1 or claim 5, wherein the media mixture injection nozzle, being arranged on the outer peripheral side of the high pressure fluid jet nozzle according to claim 6 And

According to the first aspect of the invention, the media mixed liquid ejecting nozzle is accelerated by the high pressure fluid by ejecting the media mixed liquid to the ejecting area of the fluid ejected from the high pressure fluid ejecting nozzle and the periphery of the ejecting area. by generating the liquid layer of the media mixture can be the front surface working of underwater environment becomes possible in the gas in the environment, and enables stable media supply and easy media concentration control, to obtain a uniform working surface .

  According to the invention which concerns on Claim 2, since a process target surface and a nozzle head move relatively, the process target surface can be processed uniformly.

  According to the third aspect of the present invention, the high-pressure fluid injection nozzle includes a plurality of injection holes and rotates around the axis of the high-pressure fluid injection nozzle, so that a liquid layer of a medium mixed liquid having a uniform media concentration is formed. The surface to be processed can be processed uniformly.

  According to the invention of claim 4, since the media supply unit is provided with a media supply unit that maintains a constant concentration after separating the used media mixture into a medium and a fluid and supplies the media mixture to the fluid, the stable media supply In addition, it is possible to easily manage the media density and obtain a uniform processed surface.

  According to the fifth aspect of the present invention, the high-pressure fluid ejection nozzle and the media mixture ejection nozzle are arranged concentrically so as to enable stable media supply and easy media density management, and are uniform. A machined surface can be obtained.

  According to the invention according to claim 6, since the medium mixed liquid jet nozzle is disposed on the outer peripheral side of the high pressure fluid jet nozzle, the high pressure fluid can be jetted to the medium mixed liquid in which a uniform liquid layer is formed, The surface to be processed can be processed uniformly.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1, according to the present embodiment is a configuration diagram of a front surface processing nozzle apparatus that put in the gas.
As shown in FIG. 1, the front surface processing nozzle device 1 that is used in a gas such as air includes a nozzle head 4 for ejecting the media mixture 2 and the high-pressure fluid 3, is machining the workpiece 5 A recovery tank 7 for recovering the media mixture 2, the high-pressure fluid 3, the resin burr 6 removed from the surface 5 a to be processed, and sucking the recovered media mixture 2 with the pump 21 to the classifier 11; Then, the media mixed solution 2 supplied from the recovery tank 7 is classified, and the resin burr 6 and the unnecessary media 8 are discharged to the separation tank 9 and the reproducible media mixed solution 2 is supplied to the media supply unit 10. A container 11, a medium supply unit 10 that supplies the liquid mixture 2, which has been kept constant by stirring, to the nozzle head 4 by a pump 26, and a tree recovered from the classifier 11. A separation tank 9 is supplied to a cyclone filter 29 in the media mixture 2 pumps 27 after fractionated collected using a separation plate 9a and the oil skimmer 28 a burr 6 and unwanted media 8, are mainly composed. The tank 15 is provided with a recovery tank 7 and a separation tank 9.

Further, in the vicinity of the nozzle head 4, a drive unit 14 is provided so that the workpiece 5 moves relative to the nozzle head 4 in the vertical and horizontal directions. The high pressure fluid injection nozzle 13 is connected to a jet pump 18 that supplies high pressure water (high pressure fluid) 3.
Further, the nozzle head 4 can be moved relative to the workpiece 5 in the vertical and horizontal directions. Furthermore, it is also possible to move the nozzle head 4 and the workpiece 5 both vertically and horizontally.

2, according to the present embodiment, a cross-sectional view of a nozzle head with the front surface processing nozzle apparatus that put in the gas.
As shown in FIG. 2, the nozzle head 4 is arranged on the inner side so as to overlap with the media mixed liquid ejecting nozzle 12 that ejects the media mixed liquid 2 toward the processing target surface 5 a, and the media mixed liquid ejecting nozzle 12. It is comprised from the high pressure fluid injection nozzle 13 which injects the fluid (high pressure fluid) 3 pressurized to high pressure toward the process target surface 5a. The media mixed liquid jet nozzle 12 is disposed outside the high pressure fluid jet nozzle 13.

The media mixed liquid jet nozzle 12 jets the media mixed liquid 2 to the jet region 16 of the fluid (high pressure water) 3 jetted from the high pressure fluid jet nozzle 13 and the periphery of the jet region 16 and is accelerated by the high pressure fluid. A liquid layer 17 of the mixed media 2 is generated.
Further, when the media mixed liquid ejecting nozzle 12 ejects the media mixed liquid 2 to the high pressure fluid ejecting area 16 ejected from the high pressure fluid ejecting nozzle 13 and the vicinity of the ejecting area, thereby generating the liquid layer 17 of the media mixed liquid. However, only the injection region 16 of the high-pressure fluid 3 injected from the high-pressure fluid injection nozzle 13 may be used. Moreover, you may make it arrange | position a high-pressure fluid ejection nozzle on the outer side of a media liquid mixture ejection nozzle by changing a nozzle.

3 is a front view of the nozzle head, FIG. 4A is a side view of the nozzle head, FIG. 4B is a bottom view, and FIG. 5A is a side view of a single type nozzle head. 5 (b) is a bottom view.
As shown in FIG. 3 and FIG. 4A, the nozzle head 4 is composed of a medium mixed liquid ejection nozzle 12 and a high pressure fluid ejection nozzle 13. A rotation drive unit 31 is provided above the high-pressure fluid ejection nozzle 13 (above (a) in FIG. 4). The rotation driving unit 31 rotates the high-pressure fluid jet nozzle 13 around its axis by air.
Further, as shown in FIG. 4B, the high-pressure fluid injection nozzle 13 is provided with a plurality of injection holes 30. As a result, the rotary drive unit 31 rotates the high-pressure fluid injection nozzle 13 around its axis by air, and the high-pressure fluid 3 is injected from the high-pressure fluid injection nozzle 13.

The nozzle head 32 shown in FIG. 5 is a single type nozzle head 32.
As shown in FIG. 5A, the nozzle head 32 is composed of a medium mixed liquid ejection nozzle 33 and a high pressure fluid ejection nozzle 34.
As shown in FIG. 5B, the nozzle head 32 is provided with an orifice 35 and one injection hole 36.

Then, according to this embodiment, the operation of the front surface processing nozzle apparatus that put in the gas.
As shown in FIG. 1, the resin mixture 6 removed from the medium mixed solution 2, the high-pressure fluid 3, and the processing target surface 5 a is collected in a collection tank 7. Further, air is blown into the collection tank 7, and the mixed liquid 2, the high-pressure fluid 3, the resin burr 6, and the medium 19 in the collection tank 7 are agitated.
On the other hand, the resin burr 6, the media 19, and the water 20 separated in the collection tank 7 are sent out to the classifier 11 using a pump 21.

The classifier 11 discharges the unnecessary medium 8, the medium mixed solution 2, and the resin burr 6 overflowed from the classifier 11 to the separation tank 9.
On the other hand, the media mixed solution 2 that has been selected by the classifier 11 and has a high concentration is supplied to the media supply unit 10 through the pipe 23. A pipe 23 is provided between the classifier 11 and the media supply unit 10. When the media 19 or the resin burr 6 is clogged in the pipe 23, high pressure air is supplied from the air supply source 24. Is supplied to eliminate clogging of the pipe 23.

In the media supply unit 10, the media mixture 2 supplied from the classifier 11 is separated into a media 19 and a liquid (water) 20, and then stirred by a stirrer 25 in order to maintain a constant concentration. Then, the media density of the media mixture 2 is measured and the media density is maintained.
The media mixed solution 2 in which the media concentration and the supply amount are managed in this way is supplied to the media mixed solution jet nozzle 12 by the pump 26.
Further, the media mixed liquid 2 overflowed from the media supply unit 10 is discharged to the collection tank 7.

Further, on the outlet side of the separation tank 9 has a pump 27 for suction is provided, the classifier 11 media mixture 2 released by overflow can be recovered to the inlet side of the separation tank 9, the resin After the burr 6 and the unnecessary medium 8 are separated and collected using the separation plate 9 a and the oil skimmer 28, the medium mixed solution 2 is sucked by the suction pump 27 on the outlet side that supplies the cyclone filter 29 with the pump 27. This media mixed solution 2 is replenished to the media supply unit 10 via the cyclone filter 29.
The resin burrs 6 and unnecessary media 8 supplied to the separation tank 9 are separated and settled when passing through the separation plate 9a, and are scooped out and collected by the oil skimmer 28.

As shown in FIG. 2, the nozzle head 4 provided with the medium liquid mixture injection nozzle 12 and the high-pressure fluid injection nozzle 13 is disposed orthogonally to the processing target surface 5a, and the medium liquid mixture injection nozzle 12 is a medium. The mixed liquid 2 is sprayed toward the processing target surface 5a.
Since the high-pressure fluid ejection nozzle 13 is disposed concentrically inside the medium mixed solution ejection nozzle 12, the fluid (high-pressure fluid) 3 pressurized to a high pressure is ejected toward the processing target surface 5a. To do.

  Further, the high-pressure fluid injection nozzle 13 has a plurality of injection holes 30 (see FIG. 4B), and a rotary drive unit that is rotated by air above the high-pressure fluid injection nozzle 13 (upper side in FIG. 2). Therefore, the high-pressure fluid 3 rotates around its axis and is jetted at a high speed.

FIG. 6 is an enlarged cross-sectional view showing a part A of FIG. 2 and a state in which a liquid layer is formed.
As shown in FIG. 6, the nozzle head 4 is composed of a medium mixed liquid ejecting nozzle 12 and a high pressure fluid ejecting nozzle 13, and the medium mixed liquid ejecting nozzle 12 is filled with the medium mixed liquid 2. ing. Here, Garnet # 180 is used as the medium 19.
The medium mixed liquid 2 is ejected from an orifice 37, and the orifice 37 is formed between the inner diameter of the medium mixed liquid ejecting nozzle 12 and the outer diameter of the high-pressure fluid ejecting nozzle 13. Here, the inner diameter of the medium mixed liquid injection nozzle 12 forming the orifice 37 is set to φ20 to 40.

The medium mixed liquid 2 inside the medium mixed liquid spray nozzle 12 is pressurized at a pressure of 0.1 MPa (1 kgf / cm ² ), and is sprayed from the orifice 37 to the processing target surface 5 a by this pressure. At this time, the media mixed liquid 2 forms a cylindrical liquid layer 17 toward the processing target surface 5a. At the same time, the high-pressure fluid 3 is ejected from the high-pressure fluid ejection nozzle 13. The high-pressure fluid 3 is formed into a thin column-like bundle as a whole in a cylindrical shape, and enters the medium mixed solution 2 on which the liquid layer 17 is formed at a high speed. Therefore, the medium 19 mixed in the liquid layer 17 formed by the medium mixed liquid 2 in which the medium concentration and the supply amount are uniformly controlled is accelerated by the high pressure fluid 3, and the high pressure fluid is further absorbed in the liquid layer 17. It rotates and collides with the surface 5a to be processed at high speed. Thus, stable media supply and media density management are possible, and a uniform processing target surface 5a can be obtained.

In other words, the medium mixed liquid injection nozzle 12 that injects the medium mixed liquid toward the processing target surface 5a and the medium mixed liquid injection nozzle 12 are arranged in the same direction as the medium mixed liquid injection nozzle 12 and are pressurized to a high pressure toward the processing target surface 5a. having a nozzle head with a high pressure fluid ejecting nozzles 13 for ejecting a fluid, a front surface processing nozzle device 1 that is used in air, media mixture injection nozzle 12 injects the high pressure fluid ejecting nozzles 13 The liquid mixture 17 of the medium mixed liquid 2 accelerated by the high pressure fluid 3 is generated by injecting the medium mixed liquid 2 to the injection area of the high pressure fluid 3 and the periphery of the injection area. Processes such as deburring.

  The preferred embodiments have been described above. However, the present invention is not limited to the above-described embodiments, and appropriate modifications can be made without departing from the scope of the present invention. For example, in this embodiment, garnet # 180 is used as the medium 19 and the inner diameter of the medium mixed liquid injection nozzle 12 forming the orifice 37 is set to φ20 to 40, but is not limited thereto. That is, as long as the pressurized media mixture 2 can form the liquid layer 17 in the air or the like, the same effect can be obtained even under other conditions.

The present embodiment is a configuration diagram showing a configuration of the engaging Ru front surface processing nozzle device. It is side surface sectional drawing which shows the structure of a nozzle head. It is a front view of the nozzle head shown in FIG. (A) is a side view of the nozzle head shown in FIG. 2, (b) is a bottom view. (A) is a side view which shows the modification of the nozzle head shown in FIG. 2, (b) is a bottom view. It is an expanded sectional view of the A section of the nozzle head shown in FIG. The structure of the submerged surface processing apparatus which concerns on a prior art example is shown, (a) is sectional drawing which shows the whole outline, (b) is sectional drawing explaining operation | movement of a nozzle head.

Explanation of symbols

1 front surface processing nozzle apparatus
2 Media mixture
3 High pressure fluid (high pressure water, fluid)
4,32 Nozzle head
5 Workpiece
5a Surface to be processed
6 Resin burr
7 Collection tank
8 Unnecessary media
9 Separation tank
9a Separator
10 Media supply unit
11 Classifier
12,33 Media mixture spray nozzle
13,34 High pressure fluid injection nozzle
14 Drive unit
15 tanks
16 Injection area
17 liquid layer
18 Jet pump
19 Media
20 Water (liquid)
21, 26, 27 Pump
23 Piping
24 Air supply source
25 Stirrer
28 Oil Skimmer
29 Cyclone filter
30,36 injection hole
31 Rotation drive
35,37 Orifice

Claims (6)

A media mixed liquid jet nozzle for jetting the media mixed liquid toward the surface to be processed;
A high-pressure fluid injection nozzle that is arranged coaxially with the medium liquid mixture injection nozzle and injects a fluid pressurized to a high pressure toward the surface to be processed;
Having a nozzle head with a, a front surface processing nozzle apparatus that is used in the air,
The media mixed liquid ejecting nozzle ejects the media mixed liquid to the ejection area of the high pressure fluid ejected from the high pressure fluid ejecting nozzle and to the periphery of the ejection area, and is accelerated by the high pressure fluid. front surface processing nozzle device you and generating the liquid layer of. Front surface processing nozzle according to claim 1, wherein said nozzle head, that relative movement between the processing target surface. The high pressure fluid ejecting nozzles is provided with a plurality of injection holes, the front surface processing nozzle according to claim 1, characterized in that rotation about the axis of the high pressure fluid ejecting nozzles. Front surface of claim 1, once the used of the media mixture to the media and the liquid maintaining a constant concentration after separation, characterized in that it comprises a media supply unit for supplying to the media mixture injection nozzle Processing nozzle device. The media mixture and the injection nozzle and the high pressure fluid ejecting nozzles, front surface processing nozzle according to claim 1, characterized in that it arranged to overlap concentrically. The media mixture injection nozzle, the front surface processing nozzle according to claim 1 or claim 5, characterized in that disposed on the outer peripheral side of the high pressure fluid ejecting nozzles.