EP0735247B1 - Verfahren zur Montage und zur Fertigbearbeitung von pulvermetallurgisch vorgefertigten Ventilsitzringen - Google Patents
Verfahren zur Montage und zur Fertigbearbeitung von pulvermetallurgisch vorgefertigten Ventilsitzringen Download PDFInfo
- Publication number
- EP0735247B1 EP0735247B1 EP95104535A EP95104535A EP0735247B1 EP 0735247 B1 EP0735247 B1 EP 0735247B1 EP 95104535 A EP95104535 A EP 95104535A EP 95104535 A EP95104535 A EP 95104535A EP 0735247 B1 EP0735247 B1 EP 0735247B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve seat
- rolling
- ring body
- ring
- roller set
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/22—Valve-seats not provided for in preceding subgroups of this group; Fixing of valve-seats
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
-
- 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
-
- 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
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49229—Prime mover or fluid pump making
- Y10T29/4927—Cylinder, cylinder head or engine valve sleeve making
- Y10T29/49272—Cylinder, cylinder head or engine valve sleeve making with liner, coating, or sleeve
-
- 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
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49229—Prime mover or fluid pump making
- Y10T29/49298—Poppet or I.C. engine valve or valve seat making
- Y10T29/49306—Valve seat making
Definitions
- the invention relates to a method for Assembly and finishing of Valve seat rings prefabricated using powder metallurgy according to the preamble of claim 1.
- the invention seeks to remedy this. She is pursuing the goal of the production process in manufacturing and assembly of valve seat rings significantly simplify, especially in that a Reduction in total time and therefore one considerable savings in manufacturing costs can be achieved is.
- this object is achieved in a process for assembly and finishing of valve seat rings prefabricated by powder metallurgy according to claim 1.
- the new process of the prefabricated valve seat ring with the help of a known roller burnishing tool Installation in the mounting hole in the cylinder head radial expansion to finished dimensions with usage density condensed is fewer production and assembly operations, less use of materials and significantly lower costs. Further advantages are discussed below.
- the prefabricated valve seat ring first with the Rolling tool fed to the mounting hole and then expanded.
- the Ring body according to the invention with a set of rollers cylindrical envelope contour to that of the cylindrical Finished dimensions adapted to the wall of the gas duct.
- the rolling process is carried out by rotation simultaneous spread of those on the circumference Rolling by setting the cone of the roller burnishing tool carried out.
- the expansion gives the valve seat ring in the mounting hole form-fitting hold. At the same time with the transition also becomes condensing Valve seat ring / gas channel processed by roller burnishing.
- a roller burnishing tool provided second set of rollers with tapered Wrapping contour on the free inner edge of the Annular body of the valve seat under a predetermined Angle of z. B. 45 ° or 60 ° by rolling simultaneous further compression of the material generated.
- Side seats can also be used Rolling are formed. When generating The valve seat ring in receives seat and side seats this area of use density.
- valve seat rings are easier than before a contoured inner surface can be produced, the lateral surface also opposite the gas channel can protrude.
- the invention offers other important advantages such as less material, no disposal of chips, the cylinder head does not have to be heated, the valve seat rings do not have to be supercooled and the rolling results in comparison for machining surfaces with high Load share.
- roller burnishing tools are being installed already used by steel seat rings. Here becomes a finished in terms of its state of use Seat ring by radial expansion into the bore of one Fitting made of gray cast iron. Any Post-processing of the steel ring such as compacting or Deformation is not carried out here.
- Fig. 1 illustrates a prefabricated Ring body 1 within a receiving bore 2 of a Cylinder head 3 before its further processing.
- the ring body 1 is supplied with a per se known roller burnishing tool, which is not shown in FIG. 1 is indicated. By setting the cone with the ring body 1 becomes the roller of the rolling tool held.
- Fig. 2 the ring body 1 is expanded and on Fit dimension compressed. From the burnishing tool 4 is the Head shown with the cone 5 on its Scope of a roller set 6 with a cylindrical Wrapping contour carries. The rolling process will by the rotation of the tool 4 at the same time Spreading of the rollers 6 located on the circumference Instead of the cone 5 performed. The expanding gives the ring body 1 a positive hold in the Location hole 2. After expanding the transition ring body 1 / gas channel 7 also worked.
- the assembly of the ring body 1 can also be as follows be performed.
- an appropriate Control of the cone 5 can when starting Contact of the ring body 1 with the wall the receiving bore 2 an initial further rotation of the ring body 1 for heating the material the mounting hole 2 and thus to one Friction welded connection with a positive fit of the Guide ring body 1.
- the head of the roller burnishing tool 4 contains the valve seat a second roller set 8 with a tapered Wrapping contour.
- this second roller set 8 With this second roller set 8, the valve seat 9 under an angle of z. B. 45 ° with further compression of the material rolls.
- roller burnishing tool 4 is a head of a roller burnishing tool 4 a modified version with regard to second set of roles, in which the Rollers 10 are designed as profile rolls Seating and side seats in one step to be able to roll.
- FIGS. 5 and 6 Another embodiment of a head of a The roller burnishing tool 4 is shown in FIGS. 5 and 6 illustrated.
- the arranged on the cone 5 roles as Profile rollers 11 formed. It is for the Surface of the rollers 11 selected such a profile, that after expanding the ring body 1 Valve seat ring is formed, one against the Gas channel 7 protruding contoured inner surface having.
- the inner surface 12 in essentially a funnel-shaped constriction Course, the transitions rounded at the edges are.
- Such a valve seat ring is also in one Rolling operation to the desired one Finished dimension compressed.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Powder Metallurgy (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Taps Or Cocks (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Forging (AREA)
Description
- Fig. 1
- einen zugeführten Ventilsitzring vor dem Expandieren,
- Fig. 2
- ein Rollierwerkzeug in Verbindung mit einem expandierten Ventilsitzring,
- Fig. 3
- eine weitere Arbeitsstellung des Rollierwerkzeugs der Fig. 2,
- Fig. 4
- ein Rollierwerkzeug mit einem zweiten Rollensatz mit Profilrollen,
- Fig. 5
- ein Rollierwerkzeug mit einem einzigen Rollensatz mit Profilrollen und
- Fig. 6
- den Zustand des Rollierwerkzeugs der Fig. 5 am Ende des Bearbeitungsvorgangs.
Claims (8)
- Verfahren zur Montage und zur Fertigbearbeitung von pulvermetallurgisch vorgefertigten Ventilsitzringen in ihrer Gebrauchsstellung in einer dafür vorgesehenen Aufnahmebohrung am Anfang eines Gaskanals im Zylinderkopf von Verbrennungsmotoren aus Leichtmetallegierungen, z. B. auf Al-Basis, dadurch gekennzeichnet, daß jeweils ein durch Pulverpressen und Sintern vorgefertigter Ringkörper (1) mit Hilfe eines Rollierwerkzeuges (4) mit Spiel in eine Bohrung (2) eingebracht, anschließend durch Rollieren radial bis zum formschlüssigen Halt an der Bohrungswandung expandiert und auf Fertigmaß mit Gebrauchsdichte verdichtet wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Ringkörper (1) mit einem Rollensatz (6) mit zylindrischer Umhüllungskontur auf das der zylindrischen Wandung des Gaskanals (7) angepaßte Fertigmaß verdichtet wird.
- Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß mit dem Verdichten zugleich auch der Übergang Ventilsitzring/Gaskanal durch Rollieren bearbeitet wird.
- Verfahren nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß mit Hilfe eines am Rollierwerkzeug (4) vorgesehenen zweiten Rollensatzes (8) mit kegliger Umhüllungskontur an der freien Innenkante des Ringkörpers (1) der Ventilsitz unter einem vorgegebenen Winkel von z. B. 45° bzw. 60° durch Rollieren bei gleichzeitiger weiterer Verdichtung des Werkstoffes erzeugt wird.
- Verfahren nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß mit Hilfe eines am Rollierwerkzeug (4) vorgesehenen zweiten Rollensatzes mit Profilrollen (10) am Ringkörper (1) Sitz- und Sitznebenflächen durch Rollieren bei gleichzeitiger weiterer Verdichtung des Werkstoffes erzeugt werden.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Ringkörper mit einem Rollensatz mit Profilrollen (11) auf ein Fertigmaß mit einer konturierten Innenmantelfläche (12) verdichtet wird.
- Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß eine gegenüber der Wandung des Gaskanals (7) vorstehende Innenmantelfläche (12) erzeugt wird.
- Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der Ringkörper (1) während der radialen Expansion auch nach Berührungsschluß mit der Bohrungswandung anfänglich weiter in Rotation versetzt und durch die dabei entstehende Erwärmung der Teile eine Reibschweißverbindung erzeugt wird.
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PT95104535T PT735247E (pt) | 1995-03-28 | 1995-03-28 | Processo para a montagem e acabamento de uma sede de valvula de metal em po. |
DE59508355T DE59508355D1 (de) | 1995-03-28 | 1995-03-28 | Verfahren zur Montage und zur Fertigbearbeitung von pulvermetallurgisch vorgefertigten Ventilsitzringen |
AT95104535T ATE193093T1 (de) | 1995-03-28 | 1995-03-28 | Verfahren zur montage und zur fertigbearbeitung von pulvermetallurgisch vorgefertigten ventilsitzringen |
ES95104535T ES2149895T3 (es) | 1995-03-28 | 1995-03-28 | Procedimiento para el montaje y el acabado final de anillos de asiento de valvulas prefabricados mediante metalurgia de polvos. |
EP95104535A EP0735247B1 (de) | 1995-03-28 | 1995-03-28 | Verfahren zur Montage und zur Fertigbearbeitung von pulvermetallurgisch vorgefertigten Ventilsitzringen |
KR1019960003407A KR100394173B1 (ko) | 1995-03-28 | 1996-02-13 | 분말야금법으로미리제작된밸브시트링의조립및마무리가공방법 |
BR9601146A BR9601146A (pt) | 1995-03-28 | 1996-03-27 | Processo para a montagem e para o acabamento de anéis de assento de válvula pré-fabricados metalurgicamente de pó |
HU9600770A HU219657B (hu) | 1995-03-28 | 1996-03-27 | Eljárás porkohászatilag előre gyártott szelepülésgyűrűk szerelésére és készre munkálására |
US08/623,488 US5735043A (en) | 1995-03-28 | 1996-03-28 | Method for mounting and finishing valve seat rings pre-manufactured by powder metallurgical method techniques |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP95104535A EP0735247B1 (de) | 1995-03-28 | 1995-03-28 | Verfahren zur Montage und zur Fertigbearbeitung von pulvermetallurgisch vorgefertigten Ventilsitzringen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0735247A1 EP0735247A1 (de) | 1996-10-02 |
EP0735247B1 true EP0735247B1 (de) | 2000-05-17 |
Family
ID=8219128
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95104535A Expired - Lifetime EP0735247B1 (de) | 1995-03-28 | 1995-03-28 | Verfahren zur Montage und zur Fertigbearbeitung von pulvermetallurgisch vorgefertigten Ventilsitzringen |
Country Status (9)
Country | Link |
---|---|
US (1) | US5735043A (de) |
EP (1) | EP0735247B1 (de) |
KR (1) | KR100394173B1 (de) |
AT (1) | ATE193093T1 (de) |
BR (1) | BR9601146A (de) |
DE (1) | DE59508355D1 (de) |
ES (1) | ES2149895T3 (de) |
HU (1) | HU219657B (de) |
PT (1) | PT735247E (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005095954A (ja) * | 2003-09-26 | 2005-04-14 | Hoshizaki Electric Co Ltd | 回転軸の製造方法 |
US20110100316A1 (en) * | 2009-11-05 | 2011-05-05 | Gm Global Technology Operations, Inc. | Cylinder Head Assembly For An Internal Combustion Engine and Method of Manufacture |
CN103551625B (zh) * | 2013-11-18 | 2015-09-30 | 广州中船黄埔造船有限公司 | 用于加工柴油机气缸头气门座阀口的装置 |
DE102019134155A1 (de) * | 2019-12-12 | 2021-06-17 | Gkn Sinter Metals Engineering Gmbh | Verfahren zur Herstellung eines Sinterteils |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1999434A (en) * | 1932-03-05 | 1935-04-30 | Albertson & Co Inc | Valve seat ring securing tool |
US2008002A (en) * | 1932-09-28 | 1935-07-16 | Chrysler Corp | Device for mounting valve seat inserts |
US2121464A (en) * | 1933-07-31 | 1938-06-21 | Zagorski Johann | Annular valve seat |
US3736640A (en) * | 1970-12-15 | 1973-06-05 | Fmc Corp | Method of forming a metal valve seat |
US4227292A (en) * | 1978-05-04 | 1980-10-14 | Rayloc | Process for remanufacturing a master cylinder |
SU963835A1 (ru) * | 1980-06-06 | 1982-10-07 | Брянский Ордена "Знак Почета" Институт Транспортного Машиностроения | Инструмент дл обработки цилиндрических отверстий методом пластического деформировани |
JPS57146437A (en) * | 1981-03-04 | 1982-09-09 | Masanobu Nakamura | Manufacture of cylinder having projected ring inside |
US4831976A (en) * | 1987-02-02 | 1989-05-23 | General Motors Corporation | Engine with valve seat inserts and method of retaining |
DE3838461A1 (de) * | 1988-11-12 | 1990-05-23 | Krebsoege Gmbh Sintermetall | Pulvermetallurgischer werkstoff auf kupferbasis und dessen verwendung |
US4896638A (en) * | 1988-12-07 | 1990-01-30 | Ford Motor Company | Fabricating internal combustion engine cylinder heads with close tolerance internal surfaces |
GB2278638A (en) * | 1993-06-02 | 1994-12-07 | Manganese Bronze Ltd | I.c.engine cylinder head valve seat inserts. |
US5522353A (en) * | 1995-05-17 | 1996-06-04 | Briggs & Stratton Corporation | Valve seat retainer and method of making same |
US5653377A (en) * | 1995-10-06 | 1997-08-05 | Ford Motor Company | Friction welded valve seats |
-
1995
- 1995-03-28 AT AT95104535T patent/ATE193093T1/de not_active IP Right Cessation
- 1995-03-28 DE DE59508355T patent/DE59508355D1/de not_active Expired - Fee Related
- 1995-03-28 PT PT95104535T patent/PT735247E/pt unknown
- 1995-03-28 EP EP95104535A patent/EP0735247B1/de not_active Expired - Lifetime
- 1995-03-28 ES ES95104535T patent/ES2149895T3/es not_active Expired - Lifetime
-
1996
- 1996-02-13 KR KR1019960003407A patent/KR100394173B1/ko not_active IP Right Cessation
- 1996-03-27 HU HU9600770A patent/HU219657B/hu not_active IP Right Cessation
- 1996-03-27 BR BR9601146A patent/BR9601146A/pt not_active IP Right Cessation
- 1996-03-28 US US08/623,488 patent/US5735043A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US5735043A (en) | 1998-04-07 |
EP0735247A1 (de) | 1996-10-02 |
BR9601146A (pt) | 1998-01-06 |
HU219657B (hu) | 2001-06-28 |
ATE193093T1 (de) | 2000-06-15 |
HUP9600770A2 (en) | 1996-10-28 |
KR100394173B1 (ko) | 2003-11-01 |
PT735247E (pt) | 2000-11-30 |
DE59508355D1 (de) | 2000-06-21 |
HU9600770D0 (en) | 1996-05-28 |
HUP9600770A3 (en) | 1999-11-29 |
KR960033612A (ko) | 1996-10-22 |
ES2149895T3 (es) | 2000-11-16 |
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