EP0583854A1 - Procédé pour fabriquer une partie d'un modèle de fonderie - Google Patents

Procédé pour fabriquer une partie d'un modèle de fonderie Download PDF

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Publication number
EP0583854A1
EP0583854A1 EP93250178A EP93250178A EP0583854A1 EP 0583854 A1 EP0583854 A1 EP 0583854A1 EP 93250178 A EP93250178 A EP 93250178A EP 93250178 A EP93250178 A EP 93250178A EP 0583854 A1 EP0583854 A1 EP 0583854A1
Authority
EP
European Patent Office
Prior art keywords
division
model
cast
overall model
plane
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
EP93250178A
Other languages
German (de)
English (en)
Other versions
EP0583854B1 (fr
Inventor
Mario Kieper
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0583854A1 publication Critical patent/EP0583854A1/fr
Application granted granted Critical
Publication of EP0583854B1 publication Critical patent/EP0583854B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
    • B22C7/005—Adjustable, sectional, expandable or flexible patterns

Definitions

  • the invention relates to a method for producing a cast part model for a first element of a component that can be assembled from several elements by dividing an overall model of the component in the area of at least one parting plane.
  • an overall model is first formed, which has the same shape as the body to be cast. Then the overall model is divided into partial cast models, which in turn are then used to produce negative part molds for the casting process.
  • the division of the overall model into cast sub-models can be accomplished by various ablation techniques (e.g. machining or laser ablation). All of these methods have in common that a parting line with finite expansion is created. This means that the partial cast models cannot be reassembled seamlessly to form the overall model. This must be taken into account when producing the individual casting molds using the partial casting models.
  • ablation techniques e.g. machining or laser ablation. All of these methods have in common that a parting line with finite expansion is created. This means that the partial cast models cannot be reassembled seamlessly to form the overall model. This must be taken into account when producing the individual casting molds using the partial casting models.
  • the invention has for its object to provide a method of the type mentioned, can be created by the cast part models that can be used with as little effort as possible to create greeting forms.
  • the object is achieved in that in a method of the type mentioned at least one recess is made in the overall model prior to division and at least one reference surface of the partial casting model of the first element lying in the division plane is formed by a boundary surface of the recess and at after which the overall model is divided, leaving out the areas of the reference surfaces, by introducing a continuous recess, between whose interfaces on the overall model side the division plane runs.
  • the partial cast models produced by the process according to the invention can be used to produce casting molds with particularly little effort.
  • the reference surfaces serve to define the interfaces with which the various molds will later adjoin one another when they are assembled to form the overall mold. This is done, for example, by placing the partial cast model with the reference surfaces on a straight base plate. The surface of the base plate then defines the parting plane with respect to the cast part model.
  • the method according to the invention ensures that the reference surfaces protrude further with respect to the parting plane than the other parts of the cast part model or at least do not lag behind them. This creates between the base plate and the cast part model outside the areas of the reference surfaces if necessary, joints that are sealed before the corresponding mold is created.
  • the molds created by molding can later be reassembled without any gaps by adjoining each other in the parting planes and that an overall casting mold is created which, in its dimensions, has a negative shape exactly matches the overall model before the parting corresponds.
  • the invention can advantageously be designed in such a way that, in the method, at least one reference surface of the respective cast part model is formed on each of two cast part models adjacent to one another before the division of the overall model by introducing at least one recess into the overall model .
  • This design of the method according to the invention ensures that all cast part models have the properties mentioned above, so that all cast part models can be treated equally and the elements created by casting can be assembled without joints.
  • a further advantageous embodiment of the invention provides that in the method, by introducing several recesses into the overall model, a number of three reference surfaces for each of the cast partial models corresponding to the number of recesses are formed.
  • the invention can advantageously be designed in that, in the method, the recesses are designed as slots running essentially parallel to a division plane.
  • a further advantageous embodiment of the invention provides that in each case two reference surfaces of casting partial models which are adjacent to one another before the division of the overall model are arranged alongside one another without a gap along a division plane.
  • the invention further relates to an overall model for creating cast partial models for elements of a component composed of several elements by dividing the overall model of the component in the region of at least one division plane, which has at least one recess lying in the region of a division plane, through the boundary surface of which a reference surface of a cast partial model lying in the division plane is formed.
  • FIG. 1 shows a simple hollow cylinder 1 as a complete model 1 in a side view.
  • the hollow cylinder has six slot-shaped recesses 2, 3, of which only two are visible in FIG. 1.
  • the hollow cylinder 1 is divided by the parting plane 4 into two half hollow cylinders 5, 6, which form the partial cast models 5, 6.
  • the recesses 2, 3 are arranged such that the recess 2 is delimited on one of its sides by a reference surface 7 of the cast part model 6 (half hollow cylinder 6) lying exactly in the division plane 4.
  • the recess 3 is delimited on one of its sides by a reference surface 8 of the cast part model 5 (half hollow cylinder 5) lying in the division plane 4.
  • the reference surfaces 7, 8 are highlighted in FIG. 1 by a larger line width.
  • the hollow cylinder becomes divided by a continuous recess 9, whose overall model-side interfaces are indicated in FIG. 1 by the dashed lines 10, 11.
  • the division plane 4 runs between the interfaces 10, 11 on the model side.
  • the continuous recess 9 is, for example, in the form of a saw cut, which excludes the regions 24 of the reference surfaces 7, 8.
  • the reference surfaces 7, 8, 12, 13, 14, 15 protrude or lie beyond the remaining boundary surfaces 16, 17, 18, 19, 20 of each partial cast model 5 facing the division plane 4 with these at least in one level.
  • each cast part model 5, 6 can be placed on a base plate 21, the surface 22 of which corresponds to the parting plane after the reference surfaces 14, 15 of the cast part model 6 have been placed. This is ensured by the fact that the reference surfaces 14, 15 determine the correct position of the cast part model relative to the base plate 21.
  • the resulting cavities 23 are filled before the casting of the partial cast model.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
EP93250178A 1992-08-20 1993-06-18 Procédé pour fabriquer une partie d'un modèle de fonderie Expired - Lifetime EP0583854B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4227837 1992-08-20
DE4227837A DE4227837A1 (de) 1992-08-20 1992-08-20 Verfahren zum Herstellen eines Teilmodells

Publications (2)

Publication Number Publication Date
EP0583854A1 true EP0583854A1 (fr) 1994-02-23
EP0583854B1 EP0583854B1 (fr) 1996-11-20

Family

ID=6466134

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93250178A Expired - Lifetime EP0583854B1 (fr) 1992-08-20 1993-06-18 Procédé pour fabriquer une partie d'un modèle de fonderie

Country Status (2)

Country Link
EP (1) EP0583854B1 (fr)
DE (2) DE4227837A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19648213A1 (de) * 1996-11-21 1998-05-28 Zahnradfabrik Friedrichshafen Herstellungsverfahren von Achsbrückengehäusen

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103846394B (zh) * 2013-12-05 2016-08-24 北京航星机器制造有限公司 复杂铸件的基准铸出方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE347712C (de) * 1922-01-24 Carl Wessel Holzmodell zur Herstellung von Gussformen fuer Ventilgehaeuse
DE1433946A1 (de) * 1964-03-10 1969-02-06 Deutsche Edelstahlwerke Ag Verfahren zur Herstellung von Sand- und Masseformen mit besonderer Oberflaechenguete
DE2605687A1 (de) * 1975-02-18 1976-08-26 Kubota Ltd Verfahren und vorrichtung zur herstellung von sandformen
ATE45690T1 (de) * 1986-02-26 1989-09-15 Dansk Ind Syndikat Vorrichtung zur herstellung von formteilen mit waagerechter trennseite.
DE4018129A1 (de) * 1989-06-06 1990-12-13 Hitachi Metals Ltd Gussmodell und damit hergestellte gussstuecke

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2096523B (en) * 1981-03-25 1986-04-09 Rolls Royce Method of making a blade aerofoil for a gas turbine
DK88486A (da) * 1986-02-26 1987-08-27 Dansk Ind Syndikat Apparat til fremstilling af formparter med horisontal skilleflade
US5086825A (en) * 1990-05-10 1992-02-11 Outboard Marine Corporation Method for manufacturing foam pattern assemblies

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE347712C (de) * 1922-01-24 Carl Wessel Holzmodell zur Herstellung von Gussformen fuer Ventilgehaeuse
DE1433946A1 (de) * 1964-03-10 1969-02-06 Deutsche Edelstahlwerke Ag Verfahren zur Herstellung von Sand- und Masseformen mit besonderer Oberflaechenguete
DE2605687A1 (de) * 1975-02-18 1976-08-26 Kubota Ltd Verfahren und vorrichtung zur herstellung von sandformen
ATE45690T1 (de) * 1986-02-26 1989-09-15 Dansk Ind Syndikat Vorrichtung zur herstellung von formteilen mit waagerechter trennseite.
DE4018129A1 (de) * 1989-06-06 1990-12-13 Hitachi Metals Ltd Gussmodell und damit hergestellte gussstuecke

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19648213A1 (de) * 1996-11-21 1998-05-28 Zahnradfabrik Friedrichshafen Herstellungsverfahren von Achsbrückengehäusen

Also Published As

Publication number Publication date
DE4227837A1 (de) 1994-02-24
DE59304521D1 (de) 1997-01-02
EP0583854B1 (fr) 1996-11-20

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