EP3898080A1 - Verfahren und vorrichtung zur erosiven bearbeitung eines werkstücks oder einer werkstückoberfläche mit hilfe eines hochdruck-fluidstrahls - Google Patents
Verfahren und vorrichtung zur erosiven bearbeitung eines werkstücks oder einer werkstückoberfläche mit hilfe eines hochdruck-fluidstrahlsInfo
- Publication number
- EP3898080A1 EP3898080A1 EP19813792.9A EP19813792A EP3898080A1 EP 3898080 A1 EP3898080 A1 EP 3898080A1 EP 19813792 A EP19813792 A EP 19813792A EP 3898080 A1 EP3898080 A1 EP 3898080A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fluid
- nozzle
- fluid jet
- workpiece
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 151
- 230000003628 erosive effect Effects 0.000 title claims abstract description 21
- 238000003754 machining Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000007872 degassing Methods 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000007667 floating Methods 0.000 claims description 6
- 230000004888 barrier function Effects 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 15
- 238000005260 corrosion Methods 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 8
- 239000007921 spray Substances 0.000 description 8
- 239000012080 ambient air Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010943 off-gassing Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0042—Degasification of liquids modifying the liquid flow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/04—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for treating only selected parts of a surface, e.g. for carving stone or glass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F3/00—Severing by means other than cutting; Apparatus therefor
- B26F3/004—Severing by means other than cutting; Apparatus therefor by means of a fluid jet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
- B08B2203/002—Details of cleaning machines or methods involving the use or presence of liquid or steam the liquid being a degassed liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
Definitions
- the invention relates to a method for the erosive machining of a workpiece or a workpiece surface using a high-pressure fluid jet according to the Oberbe handle of claim 1. Furthermore, the invention relates to an apparatus for erosive machining of a workpiece or a workpiece surface using a high-pressure fluid jet according to the The device is particularly suitable for carrying out the method according to the invention.
- a device for water jet cutting materials such as steel, stone, glass or ceramic, which comprises a high pressure pump and a nozzle.
- the high-pressure pump is used to generate a high-pressure fluid jet to be dispensed via the nozzle, in particular a high-pressure water jet.
- the device furthermore has a device for generating fluid pulses emerging through the nozzle, the fluid pulses for this purpose are designed to remove a predetermined amount of particles from the material.
- a discontinuous, ie in particular a periodically interrupted, fluid jet should be able to be generated via the specified device, which has a high removal effect at a comparatively low delivery pressure of the high pressure pump. Because the specifically frequented pulse pulses or fluid impulses result in a self- reinforcing effect. At the same time, the fluid impulses enable a three-dimensional geometry to be cut and / or introduced into the material.
- the device for generating the fluid pulses comprises at least one valve which is to be designed in the manner of an injection valve of an internal combustion engine.
- a magnetic actuator or piezo actuator is preferably provided to actuate the valve.
- the object of the present invention is to reduce the risk of component failure due to corrosion.
- a fluid is applied with high pressure by means of a fluid pump and fed to a nozzle for forming a high-pressure fluid jet.
- the fluid is degassed with the aid of a degassing device before it is fed to the nozzle.
- a high-pressure fluid jet made of a fluid that has been degassed beforehand is used for the erosive machining of the workpiece or the workpiece surface.
- the degassing reduces the oxygen content in the fluid, so that the corrosion attack on components of the nozzle which are at risk of corrosion is reduced. This significantly reduces the risk of component failure due to corrosion. As a result, the robustness of the nozzle is increased.
- the fluid for generating the high-pressure fluid jet can in particular be water or a fluid containing water.
- Gas bubbles are preferably generated in the fluid with the aid of the degassing device.
- gas bubbles leads to degassing of the fluid, since the gas bubbles rise to the surface of the fluid due to buoyancy. They disintegrate on the fluid surface, where the gas is released into the ambient air.
- a continuous or pulsed high-speed fluid jet be introduced into the fluid with the aid of the degassing device.
- gas bubbles can easily be generated in the fluid, due to cavitation and / or fluid shear.
- the high-speed fluid jet introduced into the fluid leads to local negative pressure areas in the fluid, so that gas bubbles form.
- the fluid is sheared by the high speed of the fluid introduced.
- the fluid to be degassed and the fluid brought into the fluid to be degassed in the form of a high-speed fluid jet can in particular be the same fluid. This means that - if water is used for the erosive machining of a workpiece or a workpiece surface - the gas bubbles in the fluid are generated with the help of a high-speed water jet.
- a further nozzle, a throttle or an orifice plate is preferably used to generate the high-speed fluid jet.
- the further nozzle which can be designed analogously to the first nozzle for shaping the high-pressure fluid jet for the erosive machining of the workpiece or the workpiece surface, a pulsed high-speed fluid jet can be generated in particular.
- the process can be used to vary further process parameters, such as the frequency, the duration and / or the flow, if necessary.
- the nozzle can also be operated continuously.
- the nozzle preferably has at least one spray hole which is designed cavitating.
- the nozzle can be conical and / or have a stepped bore.
- the nozzle preferably has no fillet fillet.
- the device provided for generating the high-speed fluid jet is connected to the pressure side of the fluid pump. This means that high-pressure fluid is fed to the nozzle, the throttle or the orifice plate.
- the nozzle, throttle or orifice plate converts the high pressure into a high speed, so that the fluid is introduced into the fluid to be degassed as a high-speed fluid jet.
- the high-speed fluid jet introduced into the fluid be deflected one or more times.
- the fluid shear can be increased by redirecting the high speed fluid jet. This in turn leads to increased outgassing and thus optimization of the degassing process.
- a barrier layer be formed with the aid of floating bodies that float on the fluid, which enables gas to be released from the water, but a renewed one Redeeming prevented.
- the device for erosive machining of a workpiece or a workpiece surface with the aid of a high-pressure fluid jet comprises a fluid pump for applying a high-pressure fluid and a nozzle for shaping a high-pressure fluid jet.
- the device is characterized by a degassing device for degassing the fluid.
- the fluid is degassed with the aid of the degassing device before it is fed to the nozzle.
- the degassing device comprises a fluid-receiving container and a device for generating a high-speed fluid jet.
- the container can be a tank for storing the fluid or a container provided in addition to the tank. This is then connected to the tank in such a way that a quantity of fluid from the tank flows to the tank. is feasible to be degassed.
- the degassed amount of fluid can then be used for the erosive machining of the workpiece or the workpiece surface. This means that the degassed amount of fluid is fed from the container to the nozzle.
- the proposed device is therefore particularly suitable for performing the inventive method.
- the device for generating a high-speed fluid jet comprises a further nozzle, a throttle or an orifice plate.
- a high-speed fluid jet can be generated in a simple manner and introduced into an amount of fluid to be degassed.
- the nozzle has the advantage that both a continuous and a pulsed high-speed fluid jet can be generated, the pulse frequency representing a variable process parameter.
- Another variable process variable is, for example, the flow through the nozzle, while the flow through the throttle or pinhole is usually always the same.
- a throttle or pinhole with a variable flow cross-section is used.
- a nozzle with at least one spray hole is selected, which is designed cavitating.
- the spray hole can in particular be conical or stepped. It is also preferable to avoid an inlet fillet in the area of the spray hole.
- the further nozzle can, for example, be configured analogously to the first nozzle, which is used to form a high-pressure fluid jet for the erosive machining of the workpiece or the workpiece surface.
- the device for generating a high-speed fluid jet is preferably connected to the pressure side of the fluid pump.
- the device for generating a high-speed fluid jet is thus supplied with a high-pressure fluid quantity which can be easily converted into a high-speed fluid jet with the aid of the device, preferably with the aid of the nozzle, the throttle or the perforated diaphragm.
- a deflecting device for example a baffle plate or a baffle, be arranged in the container for single or multiple deflection of the high-speed fluid jet.
- floating bodies are accommodated in the container, which form a barrier layer on the fluid surface, which enables gas to be released from the water, but prevents redeployment.
- Hollow bodies for example made of plastic, are particularly suitable as floating bodies.
- FIG. 1 shows a schematic representation of a device according to the invention for the erosive machining of a workpiece or a workpiece surface
- FIG. 2 shows a schematic longitudinal section through a device for generating a high-speed fluid jet according to a first preferred embodiment
- Fig. 3 is a schematic longitudinal section through an apparatus for generating egg nes high-speed fluid jet according to a second preferred embodiment
- Fig. 4 is a schematic longitudinal section through a device for generating egg nes high-speed fluid jet according to a third preferred embodiment. Detailed description of the drawings
- nozzle 4 which serves for the formation of a high-pressure fluid jet, which is directed onto the workpiece 1 or the workpiece surface.
- the nozzle 4 is supplied with a high-pressure fluid 2 via a fluid pump 3, which has previously been degassed with the aid of a degassing device 5.
- the degassing serves to reduce the amount of oxygen in the fluid 2 in order to minimize the risk of corrosion in the area of the nozzle 4.
- the degassing device 5 has a container 10 in which a device 11 for generating a high-speed fluid jet 7 is accommodated.
- the device 11 can in particular be a throttle, a perforated diaphragm or a further nozzle 8, which is designed, for example, analogously to the first nozzle 4 for the erosive machining of the workpiece 1.
- the high-speed fluid jet 7 generated with the aid of the device 11 is introduced into a quantity of fluid present in the container 10, so that due to cavitation and / or fluid shear, gas bubbles 6 form which rise in the fluid 2 and on the fluid surface 13 decay, so that the gas is released into the ambient air. In this way, the amount of fluid present in the container 10 is degassed.
- the degassed fluid 2 is then supplied to the nozzle 4 with the aid of the fluid pump 3. Since the oxygen content in the fluid 2 is minimal due to the degassing, the risk of corrosion drops significantly. This also means that the risk of component failure due to corrosion is reduced.
- the fluid pump 3 shown here in FIG. 1 is driven with the aid of an electric tor 14. Other types of drives are also possible. Furthermore, the number and arrangement of filters 15 can be varied. The filters 15 are used to separate any harmful particles contained in the fluid 2. As an alternative or in addition, an intermediate store 16 can be arranged in a pressure line 17, via which the fluid pump 3 is connected to the nozzle 4. The metering of fluid 2 to the nozzle 4 is preferably controlled with the aid of a valve 18. In the exemplary embodiment in FIG. 1, the nozzle 4 has a connection 19 for connection to a storage container 20, in which an abrasive substance is stored.
- An abrasive substance can thus be supplied to the nozzle 4 via the connection 19 and is entrained by the fluid 2 when the fluid 2 is discharged via the nozzle 4.
- the erosive machining of the workpiece 1 or the workpiece surface can be reinforced in this way.
- a return line 21 is also connected to the nozzle 4, which leads to a collecting container 22.
- the amount of fluid that is produced during the erosive processing is also collected in the collecting container 22. Since the amount of fluid generated during erosive machining is contaminated, it is disposed of.
- the device 11 in the present case comprises a nozzle 8 which has a plurality of spray holes 23.
- the nozzle 8 belongs to a needle valve, which is formed out in the manner of a fuel injector.
- the spray holes 23 can be controlled via the lifting movements of a lifting nozzle 24.
- a continuous or pulsed high-speed fluid jet 7 can be generated per spray hole 23. This leads in the fluid 2 to the formation of gas bubbles 6, which rise in the fluid 2 and give off the gas to the environment on the fluid surface 13.
- FIG. 3 shows a further development of the degassing device 5 from FIG. 2.
- floating bodies 9 are accommodated in the container 10, which float on the fluid surface 13 and form a barrier layer.
- FIG. 4 Another modification of the degassing device 5 is shown in FIG. 4.
- 10 deflection devices 12 are arranged in the container, which lead to a deflection of the high-speed fluid jets 7 in the fluid 2, so that the degassing process is accelerated by a stronger fluid shear.
- each spray hole 23 is assigned a deflection device 12 in the form of an impact plate.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018222314.9A DE102018222314A1 (de) | 2018-12-19 | 2018-12-19 | Verfahren und Vorrichtung zur erosiven Bearbeitung eines Werkstücks oder einer Werkstückoberfläche mit Hilfe eines Hochdruck-Fluidstrahls |
PCT/EP2019/083233 WO2020126421A1 (de) | 2018-12-19 | 2019-12-02 | Verfahren und vorrichtung zur erosiven bearbeitung eines werkstücks oder einer werkstückoberfläche mit hilfe eines hochdruck-fluidstrahls |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3898080A1 true EP3898080A1 (de) | 2021-10-27 |
Family
ID=68771653
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19813792.9A Pending EP3898080A1 (de) | 2018-12-19 | 2019-12-02 | Verfahren und vorrichtung zur erosiven bearbeitung eines werkstücks oder einer werkstückoberfläche mit hilfe eines hochdruck-fluidstrahls |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3898080A1 (de) |
DE (1) | DE102018222314A1 (de) |
WO (1) | WO2020126421A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112387438A (zh) * | 2020-11-04 | 2021-02-23 | 南京工程学院 | 一种气液固三相均匀混合纳米流体低温喷雾射流产生装置、方法及其应用 |
US20230191561A1 (en) * | 2021-12-20 | 2023-06-22 | Omax Corporation | Backflow diversion devices for liquid jet cutting systems, and associated systems and methods |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5219224B2 (ja) * | 2007-09-03 | 2013-06-26 | 国立大学法人 岡山大学 | 表面処理方法及びその装置 |
DE102013201797A1 (de) | 2013-02-05 | 2014-08-07 | Robert Bosch Gmbh | Vorrichtung mit einer Hochdruckpumpe zum Fördern eines Fluids |
CN106999800A (zh) * | 2014-10-28 | 2017-08-01 | 艺达思健康与科学有限责任公司 | 轴向输送管线壳侧除气 |
JP6866148B2 (ja) * | 2016-12-20 | 2021-04-28 | 株式会社Screenホールディングス | 基板処理装置および基板処理方法 |
-
2018
- 2018-12-19 DE DE102018222314.9A patent/DE102018222314A1/de not_active Withdrawn
-
2019
- 2019-12-02 EP EP19813792.9A patent/EP3898080A1/de active Pending
- 2019-12-02 WO PCT/EP2019/083233 patent/WO2020126421A1/de unknown
Also Published As
Publication number | Publication date |
---|---|
DE102018222314A1 (de) | 2020-06-25 |
WO2020126421A1 (de) | 2020-06-25 |
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