DE102012211000A1 - Method for hydroerosive rounding of boreholes - Google Patents
Method for hydroerosive rounding of boreholes Download PDFInfo
- Publication number
- DE102012211000A1 DE102012211000A1 DE102012211000.3A DE102012211000A DE102012211000A1 DE 102012211000 A1 DE102012211000 A1 DE 102012211000A1 DE 102012211000 A DE102012211000 A DE 102012211000A DE 102012211000 A1 DE102012211000 A1 DE 102012211000A1
- Authority
- DE
- Germany
- Prior art keywords
- flow channels
- flow
- flow channel
- interior
- hollow needle
- 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.)
- Withdrawn
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/10—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving other means for tumbling of work
- B24B31/116—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving other means for tumbling of work using plastically deformable grinding compound, moved relatively to the workpiece under the influence of pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C3/00—Abrasive blasting machines or devices; Plants
- B24C3/32—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks
- B24C3/325—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks for internal surfaces, e.g. of tubes
- B24C3/327—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks for internal surfaces, e.g. of tubes by an axially-moving flow of abrasive particles without passing a blast gun, impeller or the like along the internal surface
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nozzles (AREA)
Abstract
Die Erfindung betrifft ein Verfahren zum hydroerosiven Verrunden von Bohrungen oder Löchern in Bauteilen, insbesondere von Spritzlöchern in Düsenkörpern von Kraftstoffeinspritzventilen, mit den Verfahrensschritten des Einführens wenigstens eines Körpers (102) in den Innenraum (101) des Düsenkörpers (100), des Positionierens des Körpers (102) in der Nähe einer zu bearbeitenden Bohrung (104), des Definierens von wenigstens zwei Strömungskanälen (111, 112) in dem Innenraum (101) des Düsenkörpers (100) für ein jeweiliges Schleifmedium, wobei ein erster Strömungskanal (111) den hohlnadelförmig ausgebildeten Körper (102) außenseitig umströmt und ein zweiter Strömungskanal (112) den hohlnadelförmig ausgebildeten Körper (102) innenseitig durchströmt, des Zusammenführens der Strömungskanäle (111, 112) vor der Eintrittsöffnung (105) der zu bearbeitenden Bohrung (104), wobei die Strömungskanäle (111, 112) mit jeweils von einander unabhängig einstellbaren Drücken betrieben werden. Ferner werden die Drücke in den Strömungskanälen (111, 112) zeitlich variiert.The invention relates to a method for hydroerosive rounding of bores or holes in components, in particular of spray holes in nozzle bodies of fuel injection valves, with the method steps of introducing at least one body (102) into the interior (101) of the nozzle body (100) and positioning the body (102) in the vicinity of a bore (104) to be machined, defining at least two flow channels (111, 112) in the interior (101) of the nozzle body (100) for a respective grinding medium, a first flow channel (111) being in the form of a hollow needle formed body (102) flows around the outside and a second flow channel (112) flows through the hollow needle-shaped body (102) on the inside, the merging of the flow channels (111, 112) in front of the inlet opening (105) of the bore (104) to be machined, the flow channels (111, 112) can be operated with independently adjustable pressures. Furthermore, the pressures in the flow channels (111, 112) are varied over time.
Description
Stand der TechnikState of the art
Die Erfindung geht aus von einem Verfahren zum hydroerosiven Verrunden von Bohrungen oder Löchern in Bauteilen, insbesondere von Spritzlöchern in Düsenkörpern von Kraftstoffeinspritzventilen.The invention is based on a method for the hydroerosive rounding of holes or holes in components, in particular of spray holes in nozzle bodies of fuel injection valves.
Um Bohrungen bzw. Spritzlöcher von Einspritzventilen zu verrunden, wird standardmäßig der sog. hydroerosive Verrundungsprozess eingesetzt. Dabei wird ein fluides Medium, das abrasiv wirkende Partikel aufweist, unter einem bestimmten Druck in den zu den Spritzlöchern bzw. Bohrungen führenden Innenraum des Einspritzventils bzw. Düsenkörpers eingeleitet. Indem das fluide Medium durch die zu bearbeitende Bohrung strömt, findet eine Verrundung an der Einlaufkante der Bohrung statt. In
Vorteile der ErfindungAdvantages of the invention
Das Verfahren mit den Merkmalen des Patentanspruchs 1 hat den Vorteil, dass durch Definieren von zwei Strömungskanälen, welche erst in unmittelbarer Nähe zur Einlaufkante der zu bearbeitenden Bohrung zusammengeführt werden und deren Drücke unabhängig voneinander eingestellt werden, sich eine gegenüber dem Stand der Technik signifikant bessere Kontrolle des Verrundungsprozesses erzielen lässt, indem die Anströmung an dem Spritzlocheintritt bzw. der Einlaufkante der zu bearbeitenden Bohrung definiert gesteuert wird. Der dabei erfolgende Materialabtrag an der Einlaufkante der Bohrung erfolgt mithin definiert und ist sowohl lokal als auch quantitativ regelbar. Vorteilhaft ist dadurch gegenüber dem Stand der Technik ein deutliche Reduzierung des Ausschusses bei der Fertigung von Bauteilen erzielbar. Insbesondere beim Einsatz des erfindungsgemäßen Verfahrens zur Verrundung von Spritzlöchern in Einspritzdüsen bzw. Injektoren wird durch den definiert steuerbaren Materialabtrag an der Einlaufkante des Spritzlochs eine gegenüber dem Stand der Technik signifikant erhöhte Funktionssicherheit des erfindungsgemäß bearbeiteten Bauteils erzielt.The method with the features of claim 1 has the advantage that by defining two flow channels, which are brought together only in close proximity to the inlet edge of the bore to be processed and their pressures are set independently, a significantly better compared to the prior art control of the rounding process can be achieved by the inflow at the injection hole inlet or the leading edge of the bore to be machined defined controlled. The thereby taking place material removal at the inlet edge of the bore is thus defined and can be controlled both locally and quantitatively. Advantageously, a significant reduction of the rejects in the production of components is thereby achieved over the prior art. In particular, when using the method according to the invention for the rounding of spray holes in injection nozzles or injectors is achieved by the defined controllable removal of material at the inlet edge of the spray hole over the prior art significantly increased reliability of the invention processed component.
Weitere vorteilhafte Weiterbildungen und Ausgestaltungen der Erfindung ergeben sich durch die in den Unteransprüchen aufgeführten Maßnahmen. Indem gemäß einer Ausgestaltung des erfindungsgemäßen Verfahrens die Drücke in den Strömungskanälen zeitlich variiert werden, lässt sich eine kostensenkende Reduzierung der zum Verrunden erforderlichen Prozessdauer gegenüber dem Stand der Technik erreichen.Further advantageous developments and refinements of the invention will become apparent from the measures listed in the dependent claims. By varying the pressures in the flow channels in accordance with an embodiment of the method according to the invention over time, a cost-reducing reduction of the processing time required for rounding compared to the prior art can be achieved.
Zeichnungendrawings
Anhand der beigefügten Zeichnungen soll nachstehend eine Ausführungsform der Erfindung näher erläutert werden. In schematisch gehaltenen Ansichten zeigen:Reference to the accompanying drawings, an embodiment of the invention will be explained in more detail below. In schematic views show:
Beschreibung des AusführungsbeispielsDescription of the embodiment
Dabei erstreckt sich ein erster Strömungskanal
Die in den beiden Strömungskanälen
Eine Optimierung des erfindungsgemäßen Verfahrens, mit welcher das Material noch präziser und lokal definierter abgetragen werden kann, sieht vor, dass die jeweilige Konzentration von Schleifpartikeln in jedem der Strömungskanäle
Bevorzugt wird dabei die jeweilige Partikeldichte in den Strömungskanälen
Gemäß einer weiteren Optimierung des erfindungsgemäßen Verfahrens wird die Körnung der Schleifpartikel für jeden der Strömungskanäle
Claims (7)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012211000.3A DE102012211000A1 (en) | 2012-06-27 | 2012-06-27 | Method for hydroerosive rounding of boreholes |
PCT/EP2013/060057 WO2014000954A1 (en) | 2012-06-27 | 2013-05-15 | Method for the hydroerosive rounding of bore passages |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012211000.3A DE102012211000A1 (en) | 2012-06-27 | 2012-06-27 | Method for hydroerosive rounding of boreholes |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102012211000A1 true DE102012211000A1 (en) | 2014-01-02 |
Family
ID=48463988
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102012211000.3A Withdrawn DE102012211000A1 (en) | 2012-06-27 | 2012-06-27 | Method for hydroerosive rounding of boreholes |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102012211000A1 (en) |
WO (1) | WO2014000954A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016112901A1 (en) | 2015-01-12 | 2016-07-21 | Schaeffler Technologies AG & Co. KG | Assembly for measuring a force or a torque, comprising a magnetic-field sensor and a magnetic-field conducting element |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102400685B1 (en) * | 2015-06-23 | 2022-05-20 | 데이코 아이피 홀딩스 엘엘시 | How to process a venturi device or check valve after molding |
ES2914505T3 (en) * | 2018-06-01 | 2022-06-13 | Basf Se | Procedure for hydroerosive machining of components |
US11320812B2 (en) | 2018-06-01 | 2022-05-03 | Basf Se | Method for determining the geometry of a raw part, which is shaped to form a finished part in a hydroerosive grinding method |
WO2020064444A1 (en) | 2018-09-24 | 2020-04-02 | Basf Se | Method for surface processing of a component by flow grinding |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19914719C2 (en) * | 1999-03-31 | 2001-05-03 | Siemens Ag | Device for hydroerosive rounding of inlet edges of the spray hole channels in a nozzle body |
DE10353168A1 (en) * | 2003-11-14 | 2005-06-23 | Robert Bosch Gmbh | Method and device for hydroerosive rounding of bore transitions |
EP1563954B1 (en) * | 2004-02-11 | 2008-07-16 | Delphi Technologies, Inc. | Process of machining of through-holes in objects and use of an apparatus therefor |
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2012
- 2012-06-27 DE DE102012211000.3A patent/DE102012211000A1/en not_active Withdrawn
-
2013
- 2013-05-15 WO PCT/EP2013/060057 patent/WO2014000954A1/en active Application Filing
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016112901A1 (en) | 2015-01-12 | 2016-07-21 | Schaeffler Technologies AG & Co. KG | Assembly for measuring a force or a torque, comprising a magnetic-field sensor and a magnetic-field conducting element |
Also Published As
Publication number | Publication date |
---|---|
WO2014000954A1 (en) | 2014-01-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20150101 |