EP1952914A2 - Dispositif et noyautage en sable pour fabriquer un bloc moteur - Google Patents

Dispositif et noyautage en sable pour fabriquer un bloc moteur Download PDF

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Publication number
EP1952914A2
EP1952914A2 EP07022822A EP07022822A EP1952914A2 EP 1952914 A2 EP1952914 A2 EP 1952914A2 EP 07022822 A EP07022822 A EP 07022822A EP 07022822 A EP07022822 A EP 07022822A EP 1952914 A2 EP1952914 A2 EP 1952914A2
Authority
EP
European Patent Office
Prior art keywords
sand core
core
sand
holding
cylinder
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
Application number
EP07022822A
Other languages
German (de)
English (en)
Other versions
EP1952914B1 (fr
EP1952914A3 (fr
Inventor
Herbert Dr. Möding
Steffen Ziegler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KS Huayu Alutech GmbH
Original Assignee
KS Aluminium Technologie GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by KS Aluminium Technologie GmbH filed Critical KS Aluminium Technologie GmbH
Publication of EP1952914A2 publication Critical patent/EP1952914A2/fr
Publication of EP1952914A3 publication Critical patent/EP1952914A3/fr
Application granted granted Critical
Publication of EP1952914B1 publication Critical patent/EP1952914B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • B22D17/24—Accessories for locating and holding cores or inserts
    • 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
    • B22C9/105—Salt 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
    • B22C9/108—Installation of cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D18/00—Pressure casting; Vacuum casting
    • B22D18/02—Pressure casting making use of mechanical pressure devices, e.g. cast-forging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D18/00—Pressure casting; Vacuum casting
    • B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould

Definitions

  • the invention relates to a device and a sand core for producing a cylinder crankcase in closed-deck construction, wherein the device is formed of stationary and movable moldings and moldings form a mold cavity and the sand core is positively held in at least one molding and the sand core at least one Opening has, in which a retaining projection of the holding mold part extends; so that the sand core is fixed in the device and the sand core forms a water jacket core of the cylinder crankcase.
  • the stiffness of a cylinder area of a cylinder crankcase is very much determined by the design of the cylinder deck. If the cylinder cover plate is closed except for the passage of coolant or shaking out of the sand core required for the formation of the water jacket, this is referred to as the closed deck. Since the water jacket here is almost completely closed by the casting material to be filled into the casting cavity of the device, that is, in other words, the water jacket core is located inside the cylinder crankcase, there is a problem in positioning the sand core in the casting position during the casting process. Arranging cores in the casting mold presents problems, in particular in die-casting processes.
  • die casting process is to be understood in the broadest sense. This is to be understood as meaning the conventional die casting process in which the melt is shot into the mold under pressures of more than 500 bar, but also the squezze casting, in which the melt is essentially filled without pressure into the mold and then under high pressure Pressure of several 100 bar is brought to solidification, as well as the so-called low pressure process.
  • the dynamic forces of the liquid metal filled into the casting cavity on the sand core, in relation to the core displacements play a crucial role.
  • a method for securing against relocation is in the DE 197 52 518 described. Described is a die casting method for producing castings in a casting mold using post-casting cores, particularly sand or salt cores, while preventing the cores from floating in the casting process by using infiltratable bodies to support the cores in the casting mold are fixed on the sand or salt core and thus fix the cores in the mold in accordance with the position.
  • a sand core with integrally formed on the sand core lateral elevations is in the EP 1 649 951 described.
  • the elevations are held in the mold parts of the device, so that the sand core is used at the same time to form the water jacket core and to fix the position of the water jacket.
  • a device and a sand core, on which the two-part form of claim 1 is based, is in EP 0 788 855 disclosed.
  • a device and a sand core for producing a cylinder block in closed-deck construction which has a cylinder top plate and is formed with a plurality of laterally juxtaposed cylinder liners surrounded water jacket, the water jacket an upper End partially closed at the cylinder top plate to form the window and partially closed by bridge areas.
  • the device consists of several moldings which define a casting cavity for casting the cylinder block.
  • the apparatus has a number of retaining projections extending integrally from a molding to the casting cavity in the axial direction of the cylinder liner, and the sand core is formed with a number of retaining bores complementary to the respective retaining projections and arranged to extend holding protrusions extending into them for holding the sand core at a particular location of the casting cavity during casting.
  • the areas of the sand core into which the retaining projections project have a thickened wall area, so that a sufficient stability of the sand core is ensured.
  • projections are formed on the sand core, which protrude according to the prior art in other moldings of the device and fix the sand core positionally correct. This has the disadvantage that the sand core is thickened in the region of the retaining projections projecting into it, which adversely affects a structural design of the water jacket core.
  • the object of the invention is to overcome the disadvantages of the prior art and to provide a sand and / or salt core, which allows a positionally secure positioning of the sand core in the device and which is also inexpensive to manufacture.
  • the object of the invention should be dimensionally stable even with thin-walled sand cores and make no additional core storage required in slide areas.
  • the device and the sand core to allow high gating speeds of the casting metal in the die casting process.
  • the retaining projections 5 to 12 are formed, but the lower tool has on the other hand also cylindrical elevations 17, 18, 19, 20, the cylinder bore 17, 18, 19, 20 form in the finished cylinder crankcase.
  • the mold cavity 21 between the cylinder elevations 17, 18, 19, 20 and the water jacket 1 is poured with the cylinder crankcase 3 forming light metal material.
  • FIG. 3 shows a sectional view through the holding projection 5, 5 ', and the sand core 1, 1', wherein two different geometric profiles are shown.
  • the sand core 1, 1 ' projects into the retaining projection 5, 5' and in another embodiment the retaining projection 5, 5 'projects into the sand core 1, 1'. It goes without saying that the two illustrated embodiments are exemplary.
  • any geometric shapes, such as peaks, bevels, grooves, bulges can be formed as profiles.
  • the prerequisite for this is that the sand core 1, 1 'on the holding projection 5, 5' can be pushed.
  • the holding projection 5, 5 ' is conical, and the core 1, 1' has a conical recess, so that the sand core 1, 1 'only in its final position on the molded part 2, 2' completely to the holding projections 5, 5 'to 12 is applied.
  • FIG. 4 is the sand core 1, 1 'and the punch 26 which is attached to the movable mold half of the device is shown. It is inventively conceivable, as in the FIG. 4 shown, the punch 26 against the sand core 1, 1 'create and the sand core 1, 1' thus position. Alternatively, it is conceivable to introduce an opening 24 into the sand core 1, 1 ', so that the stamp 26 can be pushed into the sand core 1, 1', as in the upper picture of FIG FIG. 4 shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
EP07022822A 2007-01-22 2007-11-24 Dispositif et noyautage en sable pour fabriquer un bloc moteur Not-in-force EP1952914B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007004050A DE102007004050B4 (de) 2007-01-22 2007-01-22 Vorrichtung zum Herstellen eines Zylinderkurbelgehäuses

Publications (3)

Publication Number Publication Date
EP1952914A2 true EP1952914A2 (fr) 2008-08-06
EP1952914A3 EP1952914A3 (fr) 2009-11-11
EP1952914B1 EP1952914B1 (fr) 2012-02-22

Family

ID=39493911

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07022822A Not-in-force EP1952914B1 (fr) 2007-01-22 2007-11-24 Dispositif et noyautage en sable pour fabriquer un bloc moteur

Country Status (3)

Country Link
EP (1) EP1952914B1 (fr)
AT (1) ATE546245T1 (fr)
DE (1) DE102007004050B4 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102179476A (zh) * 2011-03-30 2011-09-14 潍柴动力股份有限公司 一种下芯工艺及其使用的组芯胎具
CN107199312A (zh) * 2017-07-13 2017-09-26 广西玉柴机器股份有限公司 集成缸盖的快速铸造及成形方法
CN110548856A (zh) * 2019-10-10 2019-12-10 北京航星机器制造有限公司 一种铝合金壳体铸件的复合铸型及其成型方法
CN113547086A (zh) * 2021-07-08 2021-10-26 上柴动力海安有限公司 一种v型柴油机机配箱样板及使用方法
WO2022084010A1 (fr) * 2020-10-23 2022-04-28 Bayerische Motoren Werke Aktiengesellschaft Procédé de production d'une pièce mise en forme, pièce mise en forme et procédé de production d'un composant
CN114799075A (zh) * 2022-05-13 2022-07-29 中国第一汽车股份有限公司 气缸体铸件组芯立浇工艺的组芯夹具及组芯夹具使用方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010025285A1 (de) * 2010-06-28 2011-12-29 Nemak Linz Gmbh Dauergießform zum Gießen von Gussstücken aus einer Metallschmelze
DE102015212518A1 (de) * 2015-07-03 2017-01-05 Volkswagen Aktiengesellschaft Verfahren zur Herstellung eines Leichtmetall-Gussbauteils durch Druckgießen oder Kokillengießen und Salzkern mit metallischen Kernmarken

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0788855A1 (fr) 1996-02-09 1997-08-13 Ryobi Ltd. Appareil et noyau pour la coulée des blocs-cylindres du type "closed deck"
DE19752518A1 (de) 1997-11-27 1999-06-02 Ks Aluminium Technologie Ag Druckgießverfahren
US6415848B1 (en) 1999-04-07 2002-07-09 Ryobi Ltd. Metal mold arrangement for producing cylinder block
EP1649951A1 (fr) 2003-07-02 2006-04-26 HONDA MOTOR CO., Ltd. Moulage d'un metal semi-solidifie sous forme de bouillie concentree

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2505229B2 (ja) * 1987-12-09 1996-06-05 日産自動車株式会社 崩壊性置中子の保持方法
JP3135373B2 (ja) * 1992-08-07 2001-02-13 日産自動車株式会社 崩壊性中子の位置決め治具および装着治具
DE102006001946B8 (de) * 2006-01-14 2010-06-02 Audi Ag Zylinderbuchseneinlegeteil für ein Zylindergehäuse einer Hubkolben-Brennkraftmaschine und Verfahren zur Herstellung eines solchen Zylinderbuchseneinlegeteils

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0788855A1 (fr) 1996-02-09 1997-08-13 Ryobi Ltd. Appareil et noyau pour la coulée des blocs-cylindres du type "closed deck"
DE19752518A1 (de) 1997-11-27 1999-06-02 Ks Aluminium Technologie Ag Druckgießverfahren
US6415848B1 (en) 1999-04-07 2002-07-09 Ryobi Ltd. Metal mold arrangement for producing cylinder block
EP1649951A1 (fr) 2003-07-02 2006-04-26 HONDA MOTOR CO., Ltd. Moulage d'un metal semi-solidifie sous forme de bouillie concentree

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102179476A (zh) * 2011-03-30 2011-09-14 潍柴动力股份有限公司 一种下芯工艺及其使用的组芯胎具
CN102179476B (zh) * 2011-03-30 2013-02-20 潍柴动力股份有限公司 一种组芯胎具
CN107199312A (zh) * 2017-07-13 2017-09-26 广西玉柴机器股份有限公司 集成缸盖的快速铸造及成形方法
CN107199312B (zh) * 2017-07-13 2023-05-09 广西玉柴机器股份有限公司 集成缸盖的快速铸造及成形方法
CN110548856A (zh) * 2019-10-10 2019-12-10 北京航星机器制造有限公司 一种铝合金壳体铸件的复合铸型及其成型方法
WO2022084010A1 (fr) * 2020-10-23 2022-04-28 Bayerische Motoren Werke Aktiengesellschaft Procédé de production d'une pièce mise en forme, pièce mise en forme et procédé de production d'un composant
CN113547086A (zh) * 2021-07-08 2021-10-26 上柴动力海安有限公司 一种v型柴油机机配箱样板及使用方法
CN114799075A (zh) * 2022-05-13 2022-07-29 中国第一汽车股份有限公司 气缸体铸件组芯立浇工艺的组芯夹具及组芯夹具使用方法
CN114799075B (zh) * 2022-05-13 2024-04-16 中国第一汽车股份有限公司 气缸体铸件组芯立浇工艺的组芯夹具及组芯夹具使用方法

Also Published As

Publication number Publication date
EP1952914B1 (fr) 2012-02-22
EP1952914A3 (fr) 2009-11-11
DE102007004050B4 (de) 2010-03-18
DE102007004050A1 (de) 2008-07-31
ATE546245T1 (de) 2012-03-15

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