EP3110581A1 - Method for producing a casting core for manufacturing cylinder heads - Google Patents
Method for producing a casting core for manufacturing cylinder headsInfo
- Publication number
- EP3110581A1 EP3110581A1 EP15703290.5A EP15703290A EP3110581A1 EP 3110581 A1 EP3110581 A1 EP 3110581A1 EP 15703290 A EP15703290 A EP 15703290A EP 3110581 A1 EP3110581 A1 EP 3110581A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- core
- casting
- sprue
- cylinder heads
- producing
- 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
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/103—Multipart cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/108—Installation of cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D25/00—Special casting characterised by the nature of the product
- B22D25/02—Special casting characterised by the nature of the product by its peculiarity of shape; of works of art
Definitions
- the present invention relates to a method for the production of a casting core for the production of cylinder heads, a casting core for the production of cylinder heads and a casting method for the production of at least two Zylinderköp- fen.
- cylinder heads are produced by casting.
- a corresponding outer contour in slides, or in particular in a base plate is usually formed in a tool mold.
- corresponding inner contours such as water channels, air channels and the combustion chambers in the cylinder head
- lost cores are used during casting in the tool mold.
- These lost cores are usually formed of sand and serve to keep the corresponding cavities free from penetration of the molten melt material.
- the alignment of the cylinder heads is formed from top to bottom, so that the melt from above penetrates with high melting temperature directly on the base plate and distributed there. This leads to high thermal stress on the base plate and the contours formed there for the formation of the corresponding counter contour of the cylinder head.
- An inventive method is used to produce a casting core for the production of cylinder heads.
- the method comprises the following steps:
- An inventive method now builds on a casting core of individual core components.
- at least two core components are produced, which are each designed for the formation of the inner contours of a cylinder head. It is thus possible according to the invention to produce two cylinder heads simultaneously in a tool mold with a cast core produced according to the invention. It is already evident here that the production capacity with a mold is doubled or essentially doubled in the same time span.
- a building-up method is in particular a so-called rapid-prototyping method or the so-called three-dimensional printing.
- the respectively desired geometrically three-dimensional shape of the corresponding core component is constructed in a layered structure.
- various types of connection between the individual layers can be made available according to the invention. It is preferred if this connection between the individual layers is sufficiently strong to provide the necessary resistance when introducing the melt. At the same time it is necessary that for demolding, a slight dissolution of the material of the casting core can be ensured in order finally to use the cylinder head made accordingly.
- the core components and / or the sprue core component can also be generated at least partially together in a single step. So it is conceivable that one of the core components is equipped directly with the functionalities of the sprue core component. Of course, it is also possible that both core components partially have the sprue core component, and accordingly in the assembly an inventive casting core is produced.
- the manufacture of the two cylinder heads is also performed in opposite directions. This is done with the correct orientation. While in known molds usually the cylinder heads are aligned with their combustion chambers down in the direction of the base plate, now by a casting core according to the invention rotated by 90 ° alignment can be possible. This results in the two cylinder heads with their combustion chambers being aligned with the direction of the lateral slides in the tool mold. The orientation of the combustion chambers of the two cylinder heads is oriented opposite to each other.
- a great advantage of a casting core according to the invention is the reduction of the cost of materials for the core.
- a second sprue core component is avoided compared to the known solutions in the production of a single cylinder head.
- the sprue core component used according to the invention is used in parallel for feeding the tool mold for two cylinder heads. This leads to a reduced cost of materials on the part of the casting core.
- the casting-core component is likewise produced by a constructive method.
- the constructive method is here also a so-called three-dimensional printing or a rapid prototyping process to understand.
- the same method and / or the same aterial composition as for at least one of the two other core components is used for the sprue core component.
- the same material and the same constructive method is used for all core components and for the sprue core component.
- a method according to the invention can be further developed such that the core components have a connection section, in particular a form-fitting section, and the sprue core component have counter-connection sections, in particular counter-form-fitting sections.
- the core components can be fastened via the connection sections to the counter-connection sections of the sprue core component. It is preferred if these are form-fitting and force-transmitting solutions. This makes it easy to nest the core components and the sprue core component.
- the connection interface of the core component may have a corresponding pin-shaped projection.
- the associated counter-connecting portion of the sprue core member has a corresponding recess, so that by simply inserting the core member into the associated counter-connecting portion of the sprue core member assembly takes place.
- This is in particular embodied such that the connecting sections and the counter-connecting sections are geometrically uniquely aligned relative to each other. By this is meant that an unambiguous orientation of the respective core component is possible only at a single point and at a single orientation at the counter-connecting portion. Thus, the risk of incorrect composition and thus a wrong geometry for the cylinder heads to be produced is avoided with high probability.
- the connecting sections and the counter-connecting section can also represent a centering aid or a positioning aid in addition to the pure positive and / or non-positive connection. This also leads to the tolerances to be achieved with higher probability and above all with higher security to reach. The entire assembly and positioning is thus not easier, but also possible faster.
- the core components are connected to the sprue core component with an opposite orientation of approximately 180 °.
- This orientation is to be understood as meaning, in particular, an orientation angle which is formed between the two main orientations of the two cylinder heads or of the two associated core components.
- the extrusion axis of a corresponding combustion chamber of the cylinder head can represent such an orientation.
- the angle between the axis of the combustion chamber of one of the two cylinder heads and the axis of the combustion chamber of the further cylinder head is approximately 180 °. This leads to the most efficient utilization of the necessary Kavmaschinesraumes within a mold.
- the associated tool shape can be made smaller, more compact and less material.
- the sprue core component has at least one feeder section and in particular at least one air outlet section.
- the feeder section By this is meant that over the feeder section a corresponding melt introduction can take place.
- Feeder section or a single plurality of feeder sections is necessary. Since the melt also solidifies in the feeder section, this inevitably leads to exclusion during the casting process, which can be halved accordingly by the training and dual use here for two cylinder heads, compared to known solutions. The same applies accordingly to the air outlet section, which serves, during the introduction of the melt, to let out the air in the cavity. Again, a corresponding material savings can be achieved.
- an inorganic material is used in a method according to the invention for the production of at least one of the core components. This leads in particular to advantages in the production of the casting core, as well as later during removal or insertion of the casting core. This refers in particular to in particular to possibly resulting pollutants or odors, which may be unpleasant or even harmful. Accordingly, the use of inorganic material is already preferable in the production of the casting core.
- a casting core for the production of cylinder heads comprising at least two core components, produced with an ancillary method with a contour for the formation of inner contours of each cylinder head.
- this casting core has a sprue core component for the supply of the melt during the casting process.
- the core components are connected to the sprue core component in the opposite direction.
- a casting core is produced by means of a method according to the invention.
- Another object of the present invention is a casting method for the manufacture of at least two cylinder heads, comprising the following steps:
- a method according to the invention uses in particular a casting core which has been produced by a method according to the invention.
- a casting method according to the invention with the same advantages as they in detail with reference to a method according to the invention and with reference to a casting core according to the invention have been explained.
- FIG. 1 shows a first embodiment of a casting core according to the invention and associated cylinder heads
- FIG. 2 shows the embodiment of FIG. 1 in a different perspective
- Fig. 5 shows an embodiment of a casting core according to the invention
- Fig. 6 shows an embodiment of a casting core according to the invention, used in a corresponding tool shape.
- FIGS. 1 and 2 show schematically how a cast core 10 according to the invention acts.
- a further core component 20 and 30 is arranged on the left and right via a central sprue core component 40.
- the two lateral core components 20 and 30 have corresponding contours, which serve for the formation of the respective cylinder head 100 and the associated inner contour 110.
- this Functions are provided centrally and thus in double use for both cylinder heads 100.
- Fig. 3 shows schematically a first step of a method according to the invention.
- inorganic material is built up in layers.
- two core members 20 and 30 are constructed. It can already be clearly seen here that both core components 20 and 30 are symmetrical, since they are used for the execution of identical or identical cylinder heads 100. Also, the formation of pin-shaped extensions for the connecting portions 22 and 32 can be seen well in this illustration. The two connecting portions 22 and 32 are formed here as a form-fitting portions 24 and 34.
- Fig. 4 shows the assembly of the manufactured core members 20 and 30 and a gate core member 40.
- the runner core member 40 may, for example, also have been produced in a layered construction here. Here is well illustrated by the arrows, as the two core members 20 and 30 are inserted into corresponding counter-connecting portions 42 by a simple lateral insertion. Thus, the connection with the connection sections 22 and 32 can be ensured via the correlation of the counter-connection sections 42 or the embodiment as counter-form-fitting sections 44. As a result, after assembly, the finished casting core 10 looks like the embodiment of FIG. 5, for example.
- the casting core 10 of the embodiment of FIG. 5 is now inserted into a tool mold 200, then this may be, for example, an embodiment according to FIG. 6.
- a base plate 210 as well as lateral slides 220 provide a corresponding cavity in which over the casting core 10 free spaces for the formation of free volumes in the cylinder heads 100 are kept free.
- the casting process can now be carried out, and two cylinder heads 100 are formed at the same time in lateral offset 180 ° to the left and right of the sprue core component 40.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014203699.2A DE102014203699A1 (en) | 2014-02-28 | 2014-02-28 | PROCESS FOR THE PRODUCTION OF A GUSSKERN FOR THE MANUFACTURE OF CYLINDER HEADS |
PCT/EP2015/052682 WO2015128180A1 (en) | 2014-02-28 | 2015-02-10 | Method for producing a casting core for manufacturing cylinder heads |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3110581A1 true EP3110581A1 (en) | 2017-01-04 |
EP3110581B1 EP3110581B1 (en) | 2019-10-23 |
Family
ID=52462929
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15703290.5A Active EP3110581B1 (en) | 2014-02-28 | 2015-02-10 | Method for producing a casting core for manufacturing cylinder heads |
Country Status (5)
Country | Link |
---|---|
US (1) | US9993864B2 (en) |
EP (1) | EP3110581B1 (en) |
CN (1) | CN105828975B (en) |
DE (1) | DE102014203699A1 (en) |
WO (1) | WO2015128180A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10434566B2 (en) * | 2016-03-18 | 2019-10-08 | Honda Motor Co., Ltd. | Casting device |
DE102017205853A1 (en) * | 2017-04-06 | 2018-10-11 | Bayerische Motoren Werke Aktiengesellschaft | core package |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4273182A (en) * | 1979-12-07 | 1981-06-16 | Ford Motor Company | Core assembly and the method of making and using such assembly |
US4609030A (en) * | 1985-12-06 | 1986-09-02 | Ford Motor Company | Method of increasing productivity of casting vee configuration engine blocks in a given mold |
US5119881A (en) * | 1990-03-07 | 1992-06-09 | Navistar International Transportation Corp. | Cylinder head casting core assembly and method |
CN1275719C (en) * | 1994-05-27 | 2006-09-20 | Eos有限公司 | Process for use in foundry practice |
DE19535487C1 (en) * | 1995-09-23 | 1996-08-01 | Bayerische Motoren Werke Ag | Motor cylinder head casting |
CN2253679Y (en) * | 1995-10-20 | 1997-05-07 | 成都汽车配件总厂郫县特种铸造研究所 | Composite die for producing casting pieces of car engine cyinder |
DE19723892C1 (en) | 1997-06-06 | 1998-09-03 | Rainer Hoechsmann | Method for producing components by build-up technology |
DE19803866A1 (en) * | 1998-01-31 | 1999-08-05 | Volkswagen Ag | Casting mold and process for making castings |
DE10059083C1 (en) * | 2000-11-28 | 2002-01-24 | Porsche Ag | Core used in the production of a casting mold for a cylinder head housing or piston consists of metal granules and a binder |
US6533020B2 (en) * | 2001-06-11 | 2003-03-18 | General Motors Corporation | Casting of engine blocks |
US20050006047A1 (en) * | 2003-07-10 | 2005-01-13 | General Electric Company | Investment casting method and cores and dies used therein |
US20050072551A1 (en) * | 2003-10-01 | 2005-04-07 | Amcol International Corporation, A Delaware Corporation | Cope/drag interface sealing article for the metal casting industry, and method |
DE102005001023A1 (en) | 2005-01-07 | 2006-07-20 | Fev Motorentechnik Gmbh | Cylinder head cooling jacket |
US8371260B2 (en) | 2010-05-17 | 2013-02-12 | GM Global Technology Operations LLC | Cylinder head drain and vent |
CN101817060B (en) * | 2010-05-18 | 2011-12-28 | 宁波强盛机械模具有限公司 | Core assembly pouring device for cylinder block casting in automobile engine |
CN103212669A (en) * | 2012-01-20 | 2013-07-24 | 天津市瑞普天晟汽车零部件制造有限公司 | Lost-foam casting model of engine cylinder body and casting method |
-
2014
- 2014-02-28 DE DE102014203699.2A patent/DE102014203699A1/en active Pending
-
2015
- 2015-02-10 WO PCT/EP2015/052682 patent/WO2015128180A1/en active Application Filing
- 2015-02-10 EP EP15703290.5A patent/EP3110581B1/en active Active
- 2015-02-10 CN CN201580002952.XA patent/CN105828975B/en active Active
-
2016
- 2016-05-20 US US15/160,333 patent/US9993864B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
CN105828975A (en) | 2016-08-03 |
WO2015128180A1 (en) | 2015-09-03 |
DE102014203699A1 (en) | 2015-09-03 |
US9993864B2 (en) | 2018-06-12 |
US20160263647A1 (en) | 2016-09-15 |
EP3110581B1 (en) | 2019-10-23 |
CN105828975B (en) | 2018-11-13 |
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