CN202725977U

CN202725977U - Crankcase body casting pattern

Info

Publication number: CN202725977U
Application number: CN 201220464293
Authority: CN
Inventors: 谢许祥; 谢波; 尹华元
Original assignee: SICHUAN XIANGYE MECHANICAL CASTING Co Ltd
Current assignee: SICHUAN XIANGYE MECHANICAL CASTING Co Ltd
Priority date: 2012-09-13
Filing date: 2012-09-13
Publication date: 2013-02-13
Anticipated expiration: 2022-09-13

Abstract

The utility model discloses a novel crankcase body casting pattern, which comprises a bottom plate core, a main core positioned in the middle of the bottom plate core, outer cores on two sides and end face cores at two ends, wherein the bottom plate core is provided with positioning bosses; the positioning bosses are arranged at two ends of the surface of the bottom plate core and form a positioning groove; the main core is provided with a positioning base plane and a bottom sand scraping surface; the sand scraping surface is positioned in the positioning groove; the positioning base plane of the main core is matched with the positioning bosses for positioning and fixing; and the outer cores on two sides and the end face cores at two ends are fixed with the bottom plate core for positioning and fixing through the positioning bosses. The positioning bosses are formed on the bottom plate core, the positioning base plane of main core is matched with the positioning bosses for positioning, and the positioning base plane is arranged on the positioning boss surface of the bottom plate so as to guarantee the height dimension of the main core, so that the sand scraping surface with large dimension change is not contacted with the bottom plate core, and the height dimension of the main core is not influenced by the sand scraping surface; and moreover, the crankcase body casting pattern is accurate in positioning, high in casting quality and high in casting efficiency.

Description

A kind of crankcase casting pattern

Technical field

The utility model belongs to the casting mould design field, especially belongs to the metal casting mould design field, particularly a kind of crankcase casting mould.

Background technology

The engine crankcase manufacturing at first needs the casting of march axle box again crankcase to be carried out fine finishining, and the crankcase casting model is to consist of by the end face core combination at the outside core that comprises base plate core, rising head core, both sides and two ends is fixing.During existing crankcase moulding mould assembly, usually put first a base plate core on workbench, more main core, end face core, outside core are placed on the base plate core, and position fixing as the altitude location basal plane to main core, end face core, outside core with base plate core placed side; During mould assembly, because main core location basal plane is the face of strike-ofing when moulding, size is unstable, for guaranteeing to conform to core sizes such as end face core, outside cores accurate positioning, the general employing made one and made cubing than high piece, whether whether the comparison spot size when checking main core laying state than high piece contourly proofreaied and correct main core and placed and meet the requirements with meeting than high piece, main core insufficient height with the main core of screen pack pad location basal plane, locate basal plane with the main core of manually polishing during main core excessive height.This complex operation, efficient are excessively low, and the product size fluctuation is larger.

Summary of the invention

The utility model has designed a kind of new crankcase casting pattern according to the deficiency of existing crankcase casting modeling structure.Problem to be solved in the utility model provides a kind of accurate positioning, avoid watering foundry goods can not accurately locate because of the face of strike-ofing and affect the crankcase of quality casting pattern structure.

The utility model provides following technical scheme to realize:

The crankcase casting pattern comprises the base plate core, is positioned at main core, the outside core of both sides and the end face core at two ends at base plate core middle part, and it is characterized in that: described base plate core has positioning boss.

Described positioning boss arranges and forms detent at base plate wicking surface two ends.

Described main core has the face of strike-ofing of location basal plane and bottom, and the face of strike-ofing is arranged in detent, and main core location basal plane cooperates the location fixing with positioning boss.

The end face core at the outside core of described both sides and two ends is fixing by positioning boss and base plate core location.

The utility model crankcase casting mould, the main core, the outside core of both sides and the end face core at two ends that comprise base plate core, base plate core middle part, at the base plate wicking surface positioning boss is set, the base plate wicking surface is the large plane of base plate core, and the middle part between the positioning boss forms groove; Usually the main core of casting has main core location basal plane and the main core face of strike-ofing, and the positioning boss setting is located basal plane with main core and cooperated, and main core, end face core can be placed in base plate core positioning boss surface, and outside core can be placed in the large plane of base plate core.Base plate core convex table top is the bottom surface datum level of main core, end face core, and the large plane of base plate core is outside core bottom surface datum level; Main core is strike-off behind the face mould assembly in base plate core positioning boss groove, do not contact with the base plate wicking surface, also namely main core can its because of the main core of the uncertain impact of rear size of strike-ofing location.Be placed on behind the mould assembly of outside core bottom surface and guarantee its height on the large plane of base plate core.Be placed on the base plate core positioning boss behind the mould assembly of end face core bottom surface.

During mould assembly, main core location basal plane is placed on the base plate convex table top, and the face of strike-ofing is arranged in detent; Then end face core bottom surface is also placed on the base plate core convex table top; The outside core bottom surface is placed on the large plane of base plate core.All take base plate core convex table top as benchmark, the height of outside core has guaranteed the height dimension of each core take the large plane of base plate core as benchmark to the height of main core, end face core.

The utility model helpfulness: the utility model is provided with positioning boss at the base plate core, utilize main core location basal plane and positioning boss coupling location, be placed on the location basal plane and guarantee main core height dimension on the base plate convex table top, the large face of strike-ofing of change in size is not contacted with the base plate core, and the face of strike-ofing can not affect main core height dimension.Main core is located the basal plane size and is determined by mould, and casting dimension is stable, also no longer needs to adjust size than high piece, and the mould assembly time also shortens simultaneously, has improved production efficiency.The utility model is a kind of accurate positioning, casting better quality, the higher crankcase casting pattern of casting efficient.

Description of drawings

Fig. 1 is the utility model crankcase casting pattern cross-sectional schematic;

Fig. 2 is the utility model base plate cored structure schematic diagram;

Fig. 3 is a kind of crankcase main cored structure schematic diagram of casting;

Each core cooperated floor map when Fig. 4 was the utility model casting pattern mould assembly;

Fig. 5 is existing base plate cored structure schematic diagram;

Fig. 6 is existing base plate core and main core mated condition schematic diagram.

Among the figure, the 1st, positioning boss, 1a are detents, the 2nd, the large plane of base plate core, the 3rd, main core location basal plane, the 4th, the main core face of strike-ofing, the 5th, the end face core, the 6th, outside core, the 7th, the base plate core, the 8th, main core, the 9th, than high piece, K compares height.

The specific embodiment

Below by embodiment the utility model is conducted further description; the present embodiment only is used for the utility model is further detailed; but can not be interpreted as the restriction to the utility model protection domain, those skilled in the art makes some nonessential improvement according to content of the present utility model and adjustment belongs to the scope that the utility model is protected.

In conjunction with Fig. 1 to Fig. 4.

As shown in the figure, the crankcase casting pattern comprises the outside core 6 of base plate core 7, both sides and the end face core 5 at two ends, and base plate core 7 has positioning boss 1.Positioning boss 1 arranges and forms detent 1a at base plate core 7 surperficial two ends.The outside core 6 of both sides and the end face core at two ends 5 are fixing with base plate core 7 location by positioning boss 1.

As shown in Figure 1, during mould assembly, the main core of foundry goods master core 8 location basal plane 3 and base plate core 7 positioning boss 1 corresponding matching are placed on the main core face 4 of strike-ofing among the groove 1a.Then end face core 5 bottom surfaces are placed on 1 of base plate core 7 positioning boss; Outside core 6 bottom surfaces are placed on the base plate core 7 large planes 2.The height of main core 8, end face core 5 is all take base plate core convex table top 1 as benchmark, and the height of outside core 6 has guaranteed the height dimension of each core take base plate core 7 large planes 2 as benchmark.Among Fig. 1 in order to represent model structure behind the mould assembly, only with an end face core 5 and outside core 6 expressions in the drawings.

Fig. 2 is the utility model base plate cored structure schematic diagram, as shown in the figure, be provided with positioning boss 1 at base plate core 7 surperficial two ends, positioning boss 1 height mates height and the relative positioning position that determines whole mould assembly model with main core location basal plane 3, be arranged in detent 1a during the face of strike-ofing 4 mould assembly of main core 8, strike-off face 4 when main core 8 moulding usually size can not accurately determine, processing is strike-off face 4 thickness less than the detent 1a degree of depth by strike-ofing, so after cooperating the location by positioning boss 1 height and main core location basal plane 3, the face 4 of strike-ofing does not affect behind the mould assembly each central layer of model and locates.

Fig. 3 is the structural representation of this routine main core 8, as shown in the figure, determines that at the face of strike-ofing 4 two ends basis and base plate core 7 Position Design needs two symmetrical platforms are main core location basal plane 3.

Fig. 4 is model mould assembly rear end face structural representation.

Fig. 5 and Fig. 6 are existing model schematic diagrames, as shown in the figure, it is fixing that location, base plate core 7 surface is directly placed in the bottom surface of main core 8, usually undesirable because of the main core 8 bottom surfaces unstable model that causes of face size of strike-ofing, therefore when existing mould assembly model, employing is relatively located with main core 8 than high piece 9, its complicated operation, and can not guarantee that castability is stable, reliable.

Claims

1. crankcase casting pattern comprises base plate core (7), is positioned at main core (8), the outside core (6) of both sides and the end face core (5) at two ends at base plate core (7) middle part, and it is characterized in that: described base plate core (7) has positioning boss (1).

2. crankcase casting pattern according to claim 1 is characterized in that: described positioning boss (1) arranges and forms detent (1a) at the surperficial two ends of base plate core (7).

3. crankcase casting pattern according to claim 2, it is characterized in that: described main core (8) has the face of strike-ofing (4) of location basal plane (3) and bottom, the face (4) of strike-ofing is arranged in detent (1a), and main core location basal plane (3) cooperates the location fixing with positioning boss (1).

4. crankcase casting pattern according to claim 2 is characterized in that: the end face core (5) at the outside core of described both sides (6) and two ends is fixing with base plate core (7) location by positioning boss (1).