CN101823238A - Nozzle device of conical core control flow beam for micro-abrasive air jet machining - Google Patents
Nozzle device of conical core control flow beam for micro-abrasive air jet machining Download PDFInfo
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- CN101823238A CN101823238A CN 201010159578 CN201010159578A CN101823238A CN 101823238 A CN101823238 A CN 101823238A CN 201010159578 CN201010159578 CN 201010159578 CN 201010159578 A CN201010159578 A CN 201010159578A CN 101823238 A CN101823238 A CN 101823238A
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Abstract
The invention discloses a nozzle device of a conical core control flow beam for micro-abrasive air jet machining. The nozzle device comprises a nozzle body, a nozzle base, a nozzle, a conical core, a conical core base, a conical core balance spring and a conical core micro-adjuster, wherein the nozzle is sleeved in the nozzle base; the nozzle base is arranged on a nozzle device body; the conical core is connected with the conical core base in the nozzle base; the conical core micro-adjuster is connected with the upper end of the nozzle device body through threads, and the lower end of the nozzle device body is connected with the upper end of the conical core base; and the conical core balance spring at the lower end of the conical core base makes the upper end of the conical core act on the conical core micro-adjuster all the time. Two compressed air input connectors are symmetrically arranged on the nozzle device body and are communicated with two air input passages. Two-phase flow air mixed with a micro-fine abrasive is diffused to the interior of the flow beam through the position adjustment of the conical core so as to reduce the outward diffusion tread, ensure straight flow beam and uniform distribution of the internal velocity, contribute to uniform removal of the ground materials of a part and improve the quality of the micro-abrasive jet machining.
Description
Technical field
The present invention relates to little abrasive jet processing (MJAM) technical field, particularly relate to the spray nozzle device of Micro abrasive jet processing with awl core control a fluid stream.
Background technology
In little abrasive jet processing technique field, utilize gas medium to sneak into fine abrasives such as aluminium oxide, carborundum, boron carbide, cerium oxide and iron oxide, the processing that forms two-phase fluid is prevailing.Wherein in the jet equipment, spray nozzle device is one of key problem in technology.When the two-phase fluid that is pressurized to 0.1～0.8MPa sprays from nozzle, during the directive surface of the work, the form of a fluid stream comprises degree of divergence, VELOCITY DISTRIBUTION and pressure distribution etc., will directly influence material and remove efficient, accuracy of spray and surface integrity etc.Generally in order to guarantee the form accuracy of injected piece surface, wish that a fluid stream that penetrates can assemble, and the uniformity as far as possible of the VELOCITY DISTRIBUTION in a fluid stream, can make the indenture bottom of injection more smooth like this, and sidewall is more precipitous.Yet the form of flow velocity is controlled by its shape of nozzle directly, and to this, people have invented your nozzle of straight hole nozzle, taper hole nozzle, Venturi nozzle and daraf(reciprocal of farad) etc. in succession.When using straight hole nozzle and taper hole nozzle, behind the two-phase flow gas vent,, make a fluid stream disperse because of the interior of gas molecule can discharge; Your nozzle of Venturi nozzle and daraf(reciprocal of farad) is that the shape nozzle is expanded in an outlet gradually, they have made full use of the principle of two-phase flow gas internal energy to the kinetic energy development of evil in febrile disease, can obtain ultrasonic jet velocity, but obtain ultrasonic principle is that flow velocity is outwards dispersed, and makes the velocity distribution uniformity variation of a fluid stream inside on the contrary.The TU Delft university of Holland has proposed the runner adjustable type square nozzle based on your principle of daraf(reciprocal of farad), suitable adjusting by runner can make the uniformity of a fluid stream internal speed distribution improve, but can't solve a fluid stream control problem of circular hole nozzle, therefore, the device of inventing a kind of new control a fluid stream is of practical significance very much.
Summary of the invention
The technical problem to be solved in the present invention, be that the interior of molecule can be to the principle of kinetic energy conversion when discharging according to the Compressed Gas molecule, a kind of a fluid stream form that little abrasive jet adds man-hour of improving is provided, and the spray nozzle device of a fluid stream is controlled in the Micro abrasive jet processing that improves the shape and size precision of little abrasive material processing parts with the awl core.
The technical scheme that adopts is:
Micro abrasive jet processing comprises spray nozzle device body, nozzle carrier, nozzle, awl core, awl core print seat, awl core balancing spring, awl core micro actuator and O RunddichtringO with the spray nozzle device of awl core control a fluid stream.Described nozzle cage is contained in the nozzle carrier, nozzle carrier is contained on the spray nozzle device body, is provided with the O RunddichtringO between nozzle carrier and the spray nozzle device body, and by bolted together, after nozzle and the nozzle carrier assembling, the endoporus of its nozzle and the installing hole of nozzle carrier are on same axis.The awl core is located in the nozzle, the awl core is contained on the awl core print seat in the nozzle carrier with interference fit, be set with the O RunddichtringO on the awl core micro actuator, awl core micro actuator is threaded in spray nozzle device body upper end, awl core micro actuator lower end is connected with awl core print seat upper end, awl core print seat lower end is set with awl core balancing spring, awl core balancing spring two ends are replaced respectively on awl core print seat and nozzle carrier, awl core print seat upper end is acted on the roof pressure end of awl core micro actuator all the time, but the position of the relative nozzle of turn awl core micro actuator cone governor core.Spray nozzle device body upper end is provided with two input compressed air pipe joints, two input compressed air pipe joint symmetries are installed on the spray nozzle device body, and is connected with symmetrical two the input gas passages of awl core micro actuator and communicates, the two-phase flow gas that makes input from bilateral symmetry input nozzle device body.
Above-mentioned awl micro actuator be have that radial seal is good, pitch is at the fine thread of 0.5-1.5mm.
Above-mentioned awl core is the awl core of cone angle at the 5-30 degree, and the awl core is the awl core of wedge angle or the awl core of small end face.The awl core material can be tungsten carbide, pottery, carbide alloy high-abrasive material.
Spray nozzle device of the present invention is at the inner additional taper fuse that the position is adjustable of nozzle bore, forms an annular flow passage, and annular channel is expansion gradually vertically.By an awl core position control and the effect of fuse position adjustments balancing spring, adjusting the fuse position makes the gas molecule that flows of the interior annular channel of nozzle that inside diffusion effect take place, thereby reduced the outside effect weakening of a fluid stream, improved a fluid stream distribution, and the interior jet velocity of flow velocity is more evenly distributed, improve the uniformity that gas jet rapidoprint is removed, improved the quality of little abrasive jet processing.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the awl cored structure schematic diagram of wedge angle.
Fig. 4 is the awl cored structure schematic diagram that small end face is arranged.
The specific embodiment
Micro abrasive jet processing comprises spray nozzle device body 3, nozzle carrier 2, nozzle 1, awl core 11, awl core print seat 8, awl core balancing spring 10, awl core micro actuator 6 and O RunddichtringO 7,9 with the spray nozzle device of awl core control a fluid stream.Described nozzle length is 15mm, endoporus is Φ 1mm, material is a carbide alloy, and nozzle 1 is sleeved in the nozzle carrier 2, cooperates closely, assurance does not have gas leakage, nozzle carrier 2 is contained on the spray nozzle device body 3, is provided with O RunddichtringO 9 between nozzle carrier 2 and the spray nozzle device body 3, and by bolted together, after nozzle 1 assembled with nozzle carrier 2, the installing hole of the endoporus of its nozzle 1 and nozzle carrier 2 was on same axis.Awl core 11 is located in the nozzle 1, and awl core 11 is contained on the awl core print seat 8 in the nozzle carrier 2 with interference fit.The cone angle of described awl core 11 is 25 degree, and the awl core is a wedge angle awl core, adopts carbide alloy to make.Radial seal is good, pitch is the fine thread of 1mm in order to have to bore core micro actuator 6, be set with O RunddichtringO 7 on the awl core micro actuator 6, awl core micro actuator 6 is threaded in spray nozzle device body 3 upper ends, awl core micro actuator 6 lower ends are connected with awl core print seat 8 upper ends, awl core print seat 8 lower ends are set with awl core balancing spring 10, awl core balancing spring 10 two ends are replaced respectively on awl core print seat 8 and nozzle carrier 2, awl core print seat 8 upper ends are acted on the roof pressure end of awl core micro actuator 6 all the time, but the position of turn awl core micro actuator 6 cone governor cores 11 relative nozzles 1.Spray nozzle device body 3 upper ends are provided with two input compressed air pipe joints 5, two input compressed air pipe joint 5 symmetries are installed on the spray nozzle device body 3, and be connected with symmetrical two the input gas passages 4 of awl core micro actuator 6 and communicate, the two-phase flow gas that makes input can be flowed in the endoporus of nozzle 1 equably from bilateral symmetry ground input nozzle device body 3.
Operation principle
The gas that this device will be mixed with the two-phase flow of fine abrasive imports spray nozzle device body 3 by two input gas passages 4, and from nozzle 1 ejection.When gas when nozzle sprays, the distance of the port of export by awl core micro actuator 6 cone governor cores 11 relative nozzles 1 so that adapt to different input pressure and flows, guarantees to spread in a fluid stream and reaches optimum state.When the annular runner that its awl core makes two-phase flow gas form ring between nozzle cylinder endoporus and awl core ejects, the sectional area of annular runner strengthens gradually, the interior of gas can change into kinetic energy, a fluid stream is spread to the central area, reduced a fluid stream to external diffusion, improve a fluid stream of a fluid stream, thereby improved the shape and size precision of little abrasive material processing parts.
Claims (3)
1. the spray nozzle device of a fluid stream is controlled in Micro abrasive jet processing with the awl core, comprise spray nozzle device body (3), nozzle carrier (2), nozzle (1), awl core (11), awl core print seat (8), awl core balancing spring (10), awl core micro actuator (6) and O RunddichtringO (7), (9), it is characterized in that described nozzle (1) is sleeved in the nozzle carrier (2), nozzle carrier (2) is contained on the spray nozzle device body (3), be provided with O RunddichtringO (9) between nozzle carrier (2) and the spray nozzle device body (3), and together by bolted, after nozzle (1) assembles with nozzle carrier (2), the installing hole of endoporus of its nozzle (1) and nozzle carrier (2) is on same axis, awl core (11) is located in the nozzle (1), awl core (11) is contained on the interior awl core print seat (8) of nozzle carrier (2) with interference fit, be set with O RunddichtringO (7) on the awl core micro actuator (6), awl core micro actuator (6) is threaded in spray nozzle device body (3) upper end, awl core print seat (8) lower end is set with awl core balancing spring (10), awl core balancing spring (10) two ends are replaced respectively on awl core print seat (8) and nozzle carrier (2), awl core print seat (8) upper end is acted on the roof pressure end of awl core micro actuator (6) all the time, turn is bored core micro actuator (6) but the position of the relative nozzle (1) of cone governor core (11), spray nozzle device body (3) upper end is provided with two input compressed air pipe joints (5), two input compressed air pipe joint (5) symmetries are installed on the spray nozzle device body (3), and is connected with awl core micro actuator (6) symmetrical two inputs gas passages (4) and communicates, the two-phase flow gas that makes input from bilateral symmetry input nozzle device body (3).
2. Micro abrasive jet according to claim 1 processing is with the spray nozzle device of awl core control a fluid stream, it is characterized in that described awl core micro actuator (6) radial seal is good in order to have, pitch is at the fine thread of 0.5-1.5mm.
3. the spray nozzle device of a fluid stream is controlled in Micro abrasive jet processing according to claim 1 with the awl core, it is characterized in that described awl core (11) is the awl core of cone angle at the 5-30 degree, the awl core is that awl core (12) the awl core material of wedge angle awl core (11) or small end face can be tungsten carbide, pottery, carbide alloy high-abrasive material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101595783A CN101823238B (en) | 2010-04-29 | 2010-04-29 | Nozzle device of conical core control flow beam for micro-abrasive air jet machining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101595783A CN101823238B (en) | 2010-04-29 | 2010-04-29 | Nozzle device of conical core control flow beam for micro-abrasive air jet machining |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101823238A true CN101823238A (en) | 2010-09-08 |
| CN101823238B CN101823238B (en) | 2012-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101595783A Expired - Fee Related CN101823238B (en) | 2010-04-29 | 2010-04-29 | Nozzle device of conical core control flow beam for micro-abrasive air jet machining |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1809107A1 (en) * | 1968-11-15 | 1970-06-04 | Siemag Siegener Maschb Gmbh | Nozzle for plastic extrusion |
| CN2171070Y (en) * | 1992-10-21 | 1994-07-06 | 邰晓峰 | LPG over C5 component evaporation burning device |
| CN2217470Y (en) * | 1994-11-17 | 1996-01-17 | 东北电力学院自控技术开发公司 | Anti-blocked spray head |
| US5509849A (en) * | 1994-04-18 | 1996-04-23 | Church & Dwight Co., Inc. | Blast nozzle for water injection and method of using same for blast cleaning solid surfaces |
| DE102005005638B3 (en) * | 2005-02-05 | 2006-02-09 | Cryosnow Gmbh | Method for cleaning, activating or treating workpieces using carbon dioxide snow streams comprises adding a carbon dioxide mixture via a nozzle opening of a mixing chamber into which a central gas stream and further processing |
| CN101507908A (en) * | 2009-04-09 | 2009-08-19 | 北京化工大学 | Micro-channel telescopic device and use thereof |
-
2010
- 2010-04-29 CN CN2010101595783A patent/CN101823238B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1809107A1 (en) * | 1968-11-15 | 1970-06-04 | Siemag Siegener Maschb Gmbh | Nozzle for plastic extrusion |
| CN2171070Y (en) * | 1992-10-21 | 1994-07-06 | 邰晓峰 | LPG over C5 component evaporation burning device |
| US5509849A (en) * | 1994-04-18 | 1996-04-23 | Church & Dwight Co., Inc. | Blast nozzle for water injection and method of using same for blast cleaning solid surfaces |
| CN2217470Y (en) * | 1994-11-17 | 1996-01-17 | 东北电力学院自控技术开发公司 | Anti-blocked spray head |
| DE102005005638B3 (en) * | 2005-02-05 | 2006-02-09 | Cryosnow Gmbh | Method for cleaning, activating or treating workpieces using carbon dioxide snow streams comprises adding a carbon dioxide mixture via a nozzle opening of a mixing chamber into which a central gas stream and further processing |
| CN101507908A (en) * | 2009-04-09 | 2009-08-19 | 北京化工大学 | Micro-channel telescopic device and use thereof |
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| Publication number | Publication date |
|---|---|
| CN101823238B (en) | 2012-01-25 |
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