EP2164679A1 - Verfahren und vorrichtung zum oberflächenstrahlen eines bauteils im bereich einer durchgangsöffnung - Google Patents
Verfahren und vorrichtung zum oberflächenstrahlen eines bauteils im bereich einer durchgangsöffnungInfo
- Publication number
- EP2164679A1 EP2164679A1 EP08773264A EP08773264A EP2164679A1 EP 2164679 A1 EP2164679 A1 EP 2164679A1 EP 08773264 A EP08773264 A EP 08773264A EP 08773264 A EP08773264 A EP 08773264A EP 2164679 A1 EP2164679 A1 EP 2164679A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- passage opening
- component
- region
- counter
- deflection tool
- 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.)
- Granted
Links
Classifications
-
- 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
- B24C1/10—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for compacting surfaces, e.g. shot-peening
-
- 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
- B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
- B24C1/083—Deburring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C5/00—Devices or accessories for generating abrasive blasts
- B24C5/005—Vibratory devices, e.g. for generating abrasive blasts by ultrasonic vibrations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/47—Burnishing
- Y10T29/479—Burnishing by shot peening or blasting
Definitions
- the invention relates to a method and an apparatus for surface blasting, in particular for ultrasonic shot peening, of a component in the region of a through-opening of the type indicated in the preambles of claims 1 and 12, respectively.
- a device which comprises a vibration device in the form of an ultrasonic sonotrode for acting on or accelerating the blasting material and respective counter-elements.
- the vibration device on one side and the respective counter element on the opposite side are arranged relative to a component region having the passage opening.
- the blasting of the component then takes place in two stages. In a first stage, the edge region facing the vibration device is blasted between the surface of the corresponding side of the component region and an inner surface of the through-opening.
- a counter element is used, which is plugged into the passage opening in the manner of a plug pin.
- the counter element and the passage opening thus have substantially identical cross sections.
- a different counter element is used, which rests flat on the opposite side of the vibration of the device on the corresponding surface of the corresponding component area.
- a homogeneous hardening of the surfaces in the region of the passage opening is to be created by the two steps of the surface blasting, so as to create a connection of the component - in this case a rotor disk of a gas turbine - which is extremely resistant to failure due to cracking.
- Object of the present invention is to provide a method and an apparatus of the type mentioned, by means of which a particularly reliable and uniform solidification of the fürgangsöffhung having component area can be achieved.
- the counter element is arranged at a distance from the corresponding side of the component region. In other words, it is provided according to the invention not to position the counter element, in contrast to the prior art according to DE 10 2004 059 592 Al directly on the corresponding surface area of the component, but rather to provide a corresponding distance.
- an edge region between a counterelement facing surface of the corresponding side of the component region and an inner surface of the through holes is uniformly surface blasted.
- the corresponding side of the component region is also achieved that the surface near the through hole is also solidified particularly reliable.
- Another advantage is, moreover, that both opposing edge regions between the respective surfaces and the inner surface of the through hole can be simultaneously surface-blasted, so that the entire component in the region of the passage opening can be processed in one process step.
- a method is provided with which a targeted treatment of through holes or boreholes in components made of aluminum base alloys can be provided which tend, for example, with appropriate vibration load and / or static force or pressurization to cracking.
- a targeted treatment of through holes or boreholes in components made of aluminum base alloys can be provided which tend, for example, with appropriate vibration load and / or static force or pressurization to cracking.
- the counter element is also designed as a sonotrode, which in addition to the abovementioned leads leads to a homogenization of the beam result and to a shortening of the beam time.
- one of the passage opening facing, non-planar inner side of the counter element is used, by means of which an edge region between a surface of the corresponding side of the component region and an inner surface of the passage opening is surface-blasted.
- the use of a non-planar inner side of the counter element ensures that the edge side between the respective surface of the component and the inner surface of the through opening can be solidified or rounded in an ideal manner.
- the inner surface is blasted particularly well and uniformly, in particular in the upper region, ie near the counter element.
- a deflection tool is arranged in the passage opening.
- a deflection tool which has a smaller cross-section than the corresponding through-opening, a targeted deflection of the part through the vibration device is achieved.
- accelerated blasting material reaches in the direction of the inner surface of the through hole, so that it is solidified particularly reliable and homogeneous.
- the deflection tool is arranged in the passage opening from the side of the counter element. Consequently, the deflection tool is preferably positioned on the side opposite the vibration device so that the abrasive material accelerated by the vibration device is deflected in a particularly advantageous manner by means of the deflection tool, in particular in the direction of the inner surface of the through hole.
- the deflection tool is arranged together with the counter element relative to the surface area of the component having the passage opening. This results in a procedurally particularly simple arrangement of the counter element and the deflection tool, wherein moreover can be ensured in a simple manner that the counter element and the deflection tool are always positioned consistently relative to each other. Thus, a particularly good reproducibility of surface blasting can be ensured.
- the deflection tool dimensioned smaller than the passage opening in the cross section is moreover preferably arranged in a central region of the passage opening, so that it has a preferably uniform distance to the corresponding inner surface of the passage opening on all sides. As a result, a particularly homogeneous solidification of the inner surface of the passage opening is achieved.
- the deflection tool is arranged over a partial length of the passage opening within the latter. Since, according to experience, the inner surface of the passage opening near the vibration device is sufficiently solidified, it is particularly necessary for the deflection tool to be positioned in the partial length of the passage opening which is arranged away from the vibration device. Consequently Overall, a very homogeneous or uniform solidification of the inner surface of the passage opening is ensured by a deflection tool positioned over only a partial length of the passage opening.
- a surface of the vibration device acting on the blasting material is arranged at a distance from the corresponding side of the surface region of the component.
- the surface of the corresponding side of the component region facing the vibration device or an edge region between this surface and the inner surface of the through-opening is also solidified or rounded off in a particularly reliable manner.
- both the counter element as well as the vibrating surface of the vibration device are arranged at a respective distance from the corresponding surface of the component, a particularly reliable solidification of the two edge regions between the respective surfaces and the inner surface of the through hole can be achieved.
- the surface region of the component having the passage opening is arranged essentially horizontally and the vibration device is arranged below the surface region.
- the previously described deflection tool has in a further embodiment of the invention at its free end on a Ablenkspitze, which additionally ensures that accelerated by the vibrating device blasting material passes in a particularly advantageous manner in the direction of the inner surface of the through hole.
- a holding device is provided by means of which the surface region of the component having the passage opening can be arranged relative to the vibration device or the counter element.
- Figure 1 is a schematic sectional view through an apparatus for ultrasonic shot peening of a component in the region of a through hole, wherein a blasting material acting on the vibrating device is arranged to a lower side and a counter-element on an opposite upper side relative to the passage opening having component portion, and wherein both the vibration device as well as the counter element are arranged at a respective distance to the corresponding side of the component region; and in 2 shows a schematic diagram of the depth distribution of the solidification or the compressive residual stress profile in the solidified edge layers or surfaces of the component, in particular in the region of the passage opening.
- exposed areas occur where e.g. Bolt mounts are given with high force application or pressurization.
- An example of such exposed locations are engine and surface fasteners or attachment points for external loads such as extra tanks or weapons.
- For through-holes for bolts in light metals for example in aluminum base alloys, which typically accommodate bolts of a Fe / Ni material, e.g. to be reckoned with vibration and stress corrosion cracking.
- the damage occurs in any case on the side of the light metal, ie in the region of the passage opening for the bolt on.
- Untreated surfaces lead to rapid failure as a result of massive cracking, depending on relevant parameters such as pressure, force application or shrinkage stress. It is therefore absolutely necessary to construct a suitable compressive residual stress profile or suitable solidification in the boundary layer of corresponding passage openings.
- a device for this purpose, comprises a vibration device 10 which is shown in section and which comprises a corresponding surface 12 by means of which blasting material - in the present case in the form of steel balls 14 - can be acted upon or accelerated.
- the vibration device 10 is embodied, for example, as an ultrasound sonotrode and oscillates-as indicated by the double arrow 16 -approximately perpendicular to its surface 12. From FIG. 1 it can be seen that the vibration device 10 rests on a lower side 18 of a case extending approximately horizontally, section shown advantage section 20 of a component 22 is arranged.
- a passage opening 24 is provided, which in the present example has a circular cross-section and serves to receive a bolt.
- the component 22 may be, for example, a lightweight component from aircraft construction, which is created in particular from an aluminum-based alloy.
- a variety of other components from the aircraft industry in particular in the form of engine parts would be conceivable.
- a counter-element 28 is arranged on an upper side 26 of the component region 20 of the component 22 opposite the vibration device 10, the function of which will be explained in more detail below. Also, the counter element 28 is shown in the present case in a schematic sectional view.
- both the vibration device 10 and the counter element 28 completely cover the clear cross section of the passage opening 24.
- the vibration device 10 and the counter element 28 are associated with a blasting chamber 30, the blasting chamber walls 32 are shown in Figure 1 only very schematically by corresponding lines. It should therefore be explicitly noted that the vibration device 10 or its vibrating surface 12 is designed to be movable or vibrating relative to the blasting chamber 30 or its blasting chamber walls 32.
- the component region 20 of the component 22 is held in such a manner by means of a holding device 34 or by means of retaining elements 36 shown only extremely schematically that the through-opening 24 is positioned within the blasting chamber 30.
- the arrangement or positioning of the vibration device 10, the counter element 28 and the component region 20 relative to one another is achieved by the holding device 34 or the holding elements 36.
- a deflection tool 38 is disposed within the passage opening 24. It can be seen that the Furthermore, it can be seen that the deflection tool 38 is arranged in a central region of the passage opening 24 and is arranged over a partial length of the passage opening 24 within the latter. In the present exemplary embodiment, this partial length corresponds approximately to half the width of the component region 20.
- the deflection tool 38 At its free end facing the vibration device 10, the deflection tool 38 comprises a deflection tip 40, the function of which will also be explained in more detail below.
- the deflection tool 38 can be designed separately as well as integrally with the counter element 28. In one embodiment, the deflection tool 38 can be arranged together with the counter element 28 relative to the component region 20 having the passage opening 24.
- the method to be carried out by means of the described device for ultrasonic shot peening of the component region 20 encompassing the through-opening 24 is characterized in particular by the induction of an extremely homogeneous charge voltage profile or an extremely homogeneous solidification. Since the surface 12 of the vibration device 10 is arranged at a distance from the corresponding lower side 18, a part of the balls 14 accelerated by the surface 12 strikes a surface 42 of the lower side 18. In addition, part of the balls 14 impinge directly on the lower region of an inner surface 44 of the passage opening 24. In addition, the edge region 46 is uniformly surface-blasted between the surface 42 and the inner surface 44 of the passage opening, so that the edge region 46, on the one hand, solidifies and, on the other hand, is rounded off - provided with a radius.
- a portion of the balls 14 accelerated by means of the surface 12 of the vibration device 10 is also deflected or diverted by means of the deflection tool 38 or the deflection tip 40 in such a way that the balls 14 in particular reach the upper area of the inner surface 44 of the passage opening 24.
- the deflection tool 38 a homogeneous solidification or a homogeneous Druckeigenschreibs- profile over the entire inner surface 44 of the through hole 24 is achieved.
- Another part of the balls 14 accelerated by the surface 12 of the vibration device 10 rebounds against the counter element 28, which is arranged at a distance from the corresponding upper side 26 of the component region 20.
- One of the through-opening 24 facing inside 48 of the counter-element 28 is non-planar, but rather slightly tapered or obliquely formed in the present case.
- the balls striking the inner side 48 are deflected obliquely outwards so that, on the one hand, a surface 50 of the upper side 26 of the component region 20 and, on the other hand, in particular an edge region 52 between the surface 50 and the inner surface 44 of the through-hole 24 solidifies becomes.
- the edge region 52 between the surface 50 and the inner surface 44 is thereby simultaneously solidified and - provided with a radius - rounded.
- the inner surface 44 could also have a different shape, in particular a rounded shape.
- both the counter element 28 and the vibration device 10 are located within the blasting chamber 30, so that the amount of grit or steel balls 14 can be kept uniform in a simple manner. As a result, a particularly reproducible solidification result is achieved.
- corresponding sealing elements or the like may be provided between the blasting chamber 30 and the component region 20 in order to prevent an undesired escape of blasting material.
- the vibrating device 10 is arranged on the lower side 18 of the component region 20, the blasting material easily returns to the vibration device 10 solely on account of its gravitational force.
- a method and a device are provided by means of which an extremely homogeneous compressive residual stress profile in the surface layers - in the present case the surfaces 42 and 50, the edge regions 46 and 52, and the inner surface 44 of the passage opening 24 - can be created.
- the counter element 28 ensures that through the through hole 24 upwardly emerging steel balls are preferably directed to the upper edge portion 52 and lead to rounding. This effect is obtained on the lower side 18 at the lower edge portion 46 from the outset.
- the deflection tool 38 is guided from above, against the underside, whereby the homogeneous solidification is achieved.
- FIG. 2 shows the depth distribution of the solidification or the compressive residual stress profile in the solidified boundary layers or surfaces of the component, in particular in the region of the passage opening, in a schematic diagram, the stress being plotted on the ordinate and the ablation depth on the abscissa. In particular, the homogeneous solidification of the corresponding components can be seen.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007029491A DE102007029491A1 (de) | 2007-06-26 | 2007-06-26 | Verfahren und Vorrichtung zum Oberflächenstrahlen eines Bauteils im Bereich einer Durchgangsöffnung |
| PCT/DE2008/000968 WO2009000232A1 (de) | 2007-06-26 | 2008-06-06 | Verfahren und vorrichtung zum oberflächenstrahlen eines bauteils im bereich einer durchgangsöffnung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2164679A1 true EP2164679A1 (de) | 2010-03-24 |
| EP2164679B1 EP2164679B1 (de) | 2012-03-28 |
Family
ID=39777044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08773264A Not-in-force EP2164679B1 (de) | 2007-06-26 | 2008-06-06 | Verfahren und vorrichtung zum oberflächenstrahlen eines bauteils im bereich einer durchgangsöffnung |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US8650920B2 (de) |
| EP (1) | EP2164679B1 (de) |
| AT (1) | ATE551154T1 (de) |
| CA (1) | CA2692979C (de) |
| DE (1) | DE102007029491A1 (de) |
| WO (1) | WO2009000232A1 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110146361A1 (en) * | 2009-12-22 | 2011-06-23 | Edwards Lifesciences Corporation | Method of Peening Metal Heart Valve Stents |
| US9670561B2 (en) * | 2014-04-11 | 2017-06-06 | City University Of Hong Kong | Apparatus and a method for surface processing a metallic structure |
| CN109848867A (zh) * | 2019-03-28 | 2019-06-07 | 杭州电子科技大学 | 一种带振动柔性喷嘴的射流抛光装置 |
| CN111705196B (zh) * | 2020-05-29 | 2021-07-20 | 江苏大学 | 一种一次喷丸可实现双面加工装置 |
| CN114011958B (zh) * | 2021-11-18 | 2023-08-04 | 中国航空制造技术研究院 | 提高带筋整体壁板疲劳寿命的喷丸成形方法 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3695091A (en) * | 1970-09-28 | 1972-10-03 | Metal Improvement Co | Method of and apparatus for measuring intensity of peening in small diameter holes |
| SU1009735A1 (ru) * | 1981-01-29 | 1983-04-07 | Куйбышевский политехнический институт им.В.В.Куйбышева | Ультразвуковое устройство дл поверхностного упрочнени |
| FR2714629B1 (fr) * | 1993-12-30 | 1996-06-07 | Teknoson Sa | Procédé et dispositif d'ébavurage de pièces mécaniques. |
| RU2139785C1 (ru) * | 1997-10-22 | 1999-10-20 | Казаков Владимир Михайлович | Устройство для поверхностного упрочнения деталей "крестовина" |
| US6189356B1 (en) * | 2000-02-17 | 2001-02-20 | General Electric Company | Method and apparatus for peening |
| FR2814099B1 (fr) * | 2000-09-21 | 2002-12-20 | Snecma Moteurs | Grenaillage transversal par ultrassons des aubes sur un rotor |
| US20060021410A1 (en) * | 2004-07-30 | 2006-02-02 | Sonats-Societe Des Nouvelles Applications Des Techniques De Surfaces | Shot, devices, and installations for ultrasonic peening, and parts treated thereby |
| DE102004037954A1 (de) * | 2004-08-05 | 2006-03-16 | Mtu Aero Engines Gmbh | Vorrichtung zum Oberflächenstrahlen von Bauteilen |
| DE102004059592B4 (de) | 2004-12-10 | 2014-09-04 | MTU Aero Engines AG | Verfahren zum Oberflächenstrahlen von Hohlräumen, insbesondere von Hohlräumen an Gasturbinen |
-
2007
- 2007-06-26 DE DE102007029491A patent/DE102007029491A1/de not_active Ceased
-
2008
- 2008-06-06 EP EP08773264A patent/EP2164679B1/de not_active Not-in-force
- 2008-06-06 CA CA2692979A patent/CA2692979C/en not_active Expired - Fee Related
- 2008-06-06 US US12/666,266 patent/US8650920B2/en not_active Expired - Fee Related
- 2008-06-06 AT AT08773264T patent/ATE551154T1/de active
- 2008-06-06 WO PCT/DE2008/000968 patent/WO2009000232A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2009000232A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2692979C (en) | 2015-02-17 |
| ATE551154T1 (de) | 2012-04-15 |
| WO2009000232A1 (de) | 2008-12-31 |
| US20100186472A1 (en) | 2010-07-29 |
| US8650920B2 (en) | 2014-02-18 |
| EP2164679B1 (de) | 2012-03-28 |
| DE102007029491A1 (de) | 2009-01-02 |
| CA2692979A1 (en) | 2008-12-31 |
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