EP1218130A2 - Verfahren zur herstellung eines kastenkolbens - Google Patents
Verfahren zur herstellung eines kastenkolbensInfo
- Publication number
- EP1218130A2 EP1218130A2 EP00930985A EP00930985A EP1218130A2 EP 1218130 A2 EP1218130 A2 EP 1218130A2 EP 00930985 A EP00930985 A EP 00930985A EP 00930985 A EP00930985 A EP 00930985A EP 1218130 A2 EP1218130 A2 EP 1218130A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- producing
- box
- casting
- window insert
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 238000005266 casting Methods 0.000 claims abstract description 18
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims 1
- 230000001419 dependent effect Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D15/00—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor
- B22D15/02—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor of cylinders, pistons, bearing shells or like thin-walled objects
-
- 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
- Y10T29/49249—Piston making
Definitions
- the invention relates to a method for producing a box piston according to the preamble of claim 1.
- Box pistons are to be understood as pistons which, below an approximately circular-cylindrical area receiving the piston rings, have an outer contour which deviates greatly from the circular shape in that the hubs and the box walls are drawn in towards the piston center axis and only in the area of the pressure and there are load-bearing shaft wall sections determined on the counter-pressure side by the piston diameter.
- Such a piston is known from US 5,058,489. They are usually manufactured by casting an aluminum alloy in a metal mold. The recess or pouring between the hub support and the ring band (see FIG. 2 of the document) is produced by linearly displaceable core parts. Due to the purely linear displacement of the core, there are limits to the shape of the recesses and thus the possible weight reduction of the piston.
- the invention is therefore concerned with the problem of enabling a variable shape of the recesses in box pistons with recesses between the ring band and hub support and, if necessary, to generate certain shape features in the region of the box wall in a simple manner.
- This problem is solved by a method according to claim 1.
- Advantageous further developments are the subject of the dependent claims.
- the axial direction is understood to mean the direction of the piston longitudinal axis, the radial direction is a direction perpendicular to the longitudinal axis.
- the pivotability of the casting cores producing the recesses makes it possible to produce undercuts, in particular in the area behind the ring grooves, without having to make the core division previously required for this with pistons.
- the casting core producing the recess can be integral with the window insert of the casting mold, the casting core can be connectable to the window insert or the window insert and the casting core producing the recess can be pivoted independently of one another or the window insert can only be moved linearly.
- the window insert is to be understood as that part of the mold which forms the piston, in particular in the region of the box walls pointing outwards and the adjacent hubs.
- pivot point and the tightening angle are selected accordingly, provided that weight-reducing openings in the box walls are also to be produced, these openings can be produced without the use of quills by the rounding radii also being produced by pivoting window inserts, at least in the upper outer region of the openings.
- a tightening slope or a tightening angle dependent on the pivot point of the casting core must be provided for the problem-free shaping of the casting, its position in contrast to the known ones Casting cores vary and their size can also vary locally.
- Fig. 1 shows a cast box piston with pivotable casting core
- Fig. 3 shows a section extending in the bolt direction next to the pin boss
- the sleeves 2 are first drawn during the forming, which create openings 3 in the region of the pin eye. Only after the sleeve 2 has been pulled completely out of the pivotable window part 4 can it be folded down and shaped laterally by pivoting about the pivot point 5. The mold, not shown, can then be opened.
- the casting cores 6 for producing the recesses 7 are an integral part of the pivotable window or mold parts 4 and are integrally connected to them.
- the non-hatched area of curvature of the window part 4, which can be seen in FIG. 2, makes it clear that the recess 7 can extend over a larger circumferential angle - also more than 90 ° - of the piston.
- the pivotable window parts 4 it is also possible with the pivotable window parts 4 to produce rounding radii at openings 8 through corresponding contours 9 on the window part 4.
- the pivotable window parts 4 it is possible to produce a reinforcing collar 10 at the lower end of the box wall by corresponding contours 11 of the pivotable window part 4.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19922809A DE19922809A1 (de) | 1999-05-19 | 1999-05-19 | Verfahren zur Herstellung eines Kastenkolbens |
DE19922809 | 1999-05-19 | ||
PCT/DE2000/000921 WO2000072116A2 (de) | 1999-05-19 | 2000-03-21 | Verfahren zur herstellung eines kastenkolbens |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1218130A2 true EP1218130A2 (de) | 2002-07-03 |
EP1218130B1 EP1218130B1 (de) | 2007-07-11 |
Family
ID=7908416
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00930985A Expired - Lifetime EP1218130B1 (de) | 1999-05-19 | 2000-03-21 | Giessform zur herstellung eines kastenkolbens |
Country Status (7)
Country | Link |
---|---|
US (1) | US6546993B1 (de) |
EP (1) | EP1218130B1 (de) |
JP (1) | JP4732595B2 (de) |
BR (1) | BR0011270B1 (de) |
DE (2) | DE19922809A1 (de) |
ES (1) | ES2290036T3 (de) |
WO (1) | WO2000072116A2 (de) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE305088T1 (de) | 2002-03-25 | 2005-10-15 | Brp Rotax Gmbh & Co Kg | Kolben |
US7401638B2 (en) * | 2002-03-28 | 2008-07-22 | Delta Electronics, Inc. | Heat-dissipating device and its manufacturing process |
DE10325917A1 (de) | 2003-06-07 | 2005-03-31 | Mahle Gmbh | Kolben für einen Verbrennungsmotor und Gießverfahren zu dessen Herstellung |
US7104183B2 (en) * | 2004-07-07 | 2006-09-12 | Karl Schmidt Unisia, Inc. | One-piece steel piston |
US20080128946A1 (en) * | 2005-02-10 | 2008-06-05 | Boye David J | Mold assembly for lightweight pistons |
US20070073674A1 (en) * | 2005-09-26 | 2007-03-29 | Bea Systems, Inc. | System and method for providing federated events for content management systems |
JP5109177B2 (ja) | 2006-11-08 | 2012-12-26 | フェデラル−モーグル コーポレイション | ピストンアセンブリ |
WO2008128153A1 (en) * | 2007-04-13 | 2008-10-23 | Federal-Mogul Powertrain, Inc. | Piston mold assembly and method of constructing a piston therewith |
DE102008048497A1 (de) | 2008-09-23 | 2010-04-08 | Ks Kolbenschmidt Gmbh | Verfahren zur Herstellung eines Kolbens einer Brennkraftmaschine mit einem mehrteiligen Schieber |
DE102010064078A1 (de) | 2010-12-23 | 2012-06-28 | Federal-Mogul Nürnberg GmbH | Gießvorrichtung für einen Kolben für einen Verbrennungsmotor und Verfahren zum Öffnen und/oder Schließen einer Gießvorrichtung |
WO2013138261A1 (en) | 2012-03-12 | 2013-09-19 | Federal-Mogul Corporation | Engine piston |
US8459332B1 (en) | 2012-07-09 | 2013-06-11 | Kevin M. O'Connor | Piston outer panel mold and method of constructing a piston and forming an undercut cooling gallery of a piston therewith |
KR101615274B1 (ko) * | 2015-09-04 | 2016-04-25 | 동양피스톤 주식회사 | 피스톤 제조용 에코 금형 장치와 피스톤 제조용 금형 장치 및 피스톤 제조 방법 |
KR101634788B1 (ko) * | 2015-09-04 | 2016-06-30 | 동양피스톤 주식회사 | 피스톤 제조용 에코 금형 장치와 피스톤 제조용 금형 장치 및 피스톤 제조 방법 |
SE543272C2 (en) | 2019-03-06 | 2020-11-10 | Husqvarna Ab | Engine piston, engine, hand-held tool, and method of manufacturing an engine piston |
DE102020106059A1 (de) | 2020-03-06 | 2021-09-09 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zum Herstellen eines Gussbauteils sowie Gießstation |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1803301A (en) * | 1929-07-12 | 1931-04-28 | Permold Co | Mold |
GB1543911A (en) * | 1975-05-20 | 1979-04-11 | Ass Eng Ltd | Pistons |
JPH0613138B2 (ja) * | 1985-04-26 | 1994-02-23 | マツダ株式会社 | ピストン用シエル鋳型 |
JP2548035B2 (ja) * | 1989-06-07 | 1996-10-30 | 帝国ピストンリング株式会社 | 遠赤外線放射体 |
JPH0310057U (de) * | 1989-06-20 | 1991-01-30 | ||
JPH0739022B2 (ja) * | 1991-04-30 | 1995-05-01 | 日信工業株式会社 | シリンダ孔内壁に凹部を形成する方法及び凹部形成用中子 |
JP3173060B2 (ja) * | 1991-09-30 | 2001-06-04 | アイシン精機株式会社 | 内燃機関用ピストンの製造方法 |
GB2278581B (en) * | 1991-11-29 | 1995-03-22 | Alloy Wheels Int Ltd | Cast vehicle wheels |
US5289866A (en) * | 1992-12-28 | 1994-03-01 | General Motors Corporation | Piston mold |
JPH07232237A (ja) * | 1994-02-25 | 1995-09-05 | Unisia Jecs Corp | ピストン用金型 |
GB9605838D0 (en) * | 1996-03-20 | 1996-05-22 | Perkins Ltd | A method for producing a piston for an internal combustion engine and a piston produced by the method |
JP3189684B2 (ja) * | 1996-06-04 | 2001-07-16 | トヨタ自動車株式会社 | ピストンの鋳造方法 |
JP3622445B2 (ja) * | 1997-09-29 | 2005-02-23 | 日産自動車株式会社 | 直噴式内燃機関のシリンダヘッド製造方法 |
DE19746102A1 (de) * | 1997-10-17 | 1999-04-22 | Grohe Kg Hans | Verfahren zum Herstellen eines Armaturenkörpers und Armaturenkörper |
-
1999
- 1999-05-19 DE DE19922809A patent/DE19922809A1/de not_active Withdrawn
-
2000
- 2000-03-21 WO PCT/DE2000/000921 patent/WO2000072116A2/de active IP Right Grant
- 2000-03-21 DE DE50014483T patent/DE50014483D1/de not_active Expired - Lifetime
- 2000-03-21 JP JP2000620443A patent/JP4732595B2/ja not_active Expired - Lifetime
- 2000-03-21 BR BRPI0011270-4A patent/BR0011270B1/pt active IP Right Grant
- 2000-03-21 EP EP00930985A patent/EP1218130B1/de not_active Expired - Lifetime
- 2000-03-21 ES ES00930985T patent/ES2290036T3/es not_active Expired - Lifetime
- 2000-05-21 US US09/979,592 patent/US6546993B1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0072116A3 * |
Also Published As
Publication number | Publication date |
---|---|
WO2000072116A3 (de) | 2002-04-25 |
JP4732595B2 (ja) | 2011-07-27 |
JP2003522313A (ja) | 2003-07-22 |
EP1218130B1 (de) | 2007-07-11 |
US6546993B1 (en) | 2003-04-15 |
DE19922809A1 (de) | 2000-11-23 |
ES2290036T3 (es) | 2008-02-16 |
BR0011270B1 (pt) | 2014-05-27 |
BR0011270A (pt) | 2003-07-15 |
WO2000072116A2 (de) | 2000-11-30 |
DE50014483D1 (de) | 2007-08-23 |
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Free format text: MOULD FOR PRODUCING A BOX PISTON |
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