CN112371919A - Casting model structure for large-sized differential housing with thick flange plate surface - Google Patents
Casting model structure for large-sized differential housing with thick flange plate surface Download PDFInfo
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- CN112371919A CN112371919A CN202011317575.8A CN202011317575A CN112371919A CN 112371919 A CN112371919 A CN 112371919A CN 202011317575 A CN202011317575 A CN 202011317575A CN 112371919 A CN112371919 A CN 112371919A
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- 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
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- 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
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- 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
- B22C9/088—Feeder heads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/20—Stack moulds, i.e. arrangement of multiple moulds or flasks
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- 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
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- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention relates to a casting model structure for a large-size differential case with a thick flange plate surface, which comprises a riser column, wherein a casting A, a casting B and a casting C are arranged around the riser column, the casting A and the casting C are symmetrically distributed on two sides of the riser post respectively, the casting B is positioned on a vertical bisector of a central connecting line of the casting A, the riser post and the casting C, connecting blocks are arranged between the riser post and flanges of the casting A, the casting B and the casting C, first heat-preserving blocks are arranged between the casting A and the casting B and between the casting C and the casting B on the outer wall of the riser post, a plurality of second heat-preserving blocks are arranged between the casting A and the casting C on the outer wall of the riser, the length of each second heat-preserving block is larger than that of each first heat-preserving block, upper shaft sleeve heat-preserving posts are arranged in upper shaft sleeves of the casting A, the casting B and the casting C, and lower shaft sleeve heat-preserving posts are arranged in lower shaft sleeves of the casting A. The invention relates to a structure with thicker upper shaft sleeve, thicker lower shaft sleeve and flange disc surface and weaker side shaft sleeve area.
Description
Technical Field
The invention relates to the technical field of automobile differential case casting, in particular to a casting model structure for a large differential case with a thick flange plate surface.
Background
In the current large environment of the automobile industry, the design of automobile parts is very important, and particularly automobile safety parts need to meet various indexes of installation, size, performance, frequency and the like; meanwhile, with the development of national policies such as energy conservation, environmental protection, and green travel, the design of each component of the automobile also needs to enhance the control of each index, such as the weight, size, and stability of dynamic balance of the product. Therefore, the design of a plurality of new products breaks through the traditional design, and the products need to be developed and produced by more advanced and more economic process schemes and meet various indexes of the products. For example, a differential housing product in a transmission system of a gearbox is similar to the conventional differential housing product in the prior art, and generally, the flange plate surface and the side shaft sleeve area are relatively thick and large, so that the whole vehicle is relatively thick and heavy, and energy conservation and emission reduction are not facilitated.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a casting model structure for a differential case with a large flange plate surface.
In order to achieve the purpose, the invention adopts the following technical scheme:
a casting model structure for a large-size differential case with a thick flange disc surface comprises a central riser post, wherein an A casting, a B casting and a C casting are arranged around the riser post, the A casting, the B casting and the C casting respectively comprise a middle flange plate, an upper shaft sleeve positioned at the top of the flange plate and a lower shaft sleeve positioned at the bottom of the flange plate, the A casting and the C casting are respectively and symmetrically distributed at two sides of the riser post, the B casting is positioned on a vertical bisector of a central connecting line of the A casting, the riser post and the C casting, the A casting, the B casting and the C casting are positioned on the same circumference with the riser post as the center of a circle, connecting blocks are respectively arranged between the riser post and the flange plates of the A casting, the B casting and the C casting, first heat preservation blocks are arranged between the A casting and the B casting and between the C casting on the outer wall of the riser, and a first heat preservation blocks are arranged on the outer wall of, A plurality of second heat preservation blocks are arranged among the castings C, the length of each second heat preservation block is larger than that of each first heat preservation block, upper shaft sleeve heat preservation columns are arranged in the upper shaft sleeves of the castings A, B and C, and lower shaft sleeve heat preservation columns are arranged in the lower shaft sleeves of the castings A, B and C.
The cross section of the first heat preservation block is of an isosceles triangle structure, wherein the sharp angle of the triangle structure is located between the castings A and B and between the castings C and B.
And the three-edge joint of the isosceles triangle structure of the first heat-preserving block is provided with a chamfer structure.
The cross section of the second heat preservation block is of a parallelogram structure.
The number of the second heat preservation blocks is two, and the two second heat preservation blocks are uniformly distributed between the casting A and the casting C.
The upper shaft sleeve heat insulation column and the lower shaft sleeve heat insulation column are of cylindrical structures.
The riser post comprises a first tapered post with a narrow top and a wide bottom at the upper end and a second tapered post with a wide top and a narrow bottom at the lower end.
The height of the first tapered column is greater than the height of the second tapered column.
The invention has the beneficial effects that: the invention has simple structure design, convenient processing and manufacturing and small occupied space of the template, the riser post is not only a feeding main body, but also is used as a drainage structure, the heat insulation of the first heat-insulating block, the second heat-insulating block, the upper shaft sleeve heat-insulating post and the lower shaft sleeve heat-insulating post can respectively combine the existing dispersed hot spots into a hot spot, so that the riser post can smoothly feed and the shrinkage porosity defect of the product is reduced. The invention is a new differential housing structure, the upper shaft sleeve, the lower shaft sleeve and the flange disk are thicker and larger, and the side shaft sleeve area is weaker.
Drawings
FIG. 1 is a schematic view of the structure in one aspect of the present invention;
FIG. 2 is a schematic structural view in another aspect of the present invention;
FIG. 3 is a front view of the present invention;
FIG. 4 is a top view of the present invention;
FIG. 5 is a sectional view taken along line A-A of FIG. 4;
in the figure: 1-riser column; 2-A casting; 3-B casting; 4-C casting; 5-a flange plate; 6-connecting blocks; 7-a first heat preservation block; 8-a second heat preservation block; 9-upper shaft sleeve; 10-mounting a heat-insulating column on an upper shaft sleeve; 11-a lower shaft sleeve; 12-lower shaft sleeve heat preservation column; 13-a first tapered column; 14-a second tapered column;
the following detailed description will be made in conjunction with embodiments of the present invention with reference to the accompanying drawings.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in fig. 1 to 5, a casting model structure for a large-sized differential case with a thick flange plate surface comprises a central riser post 1, wherein an a casting 2, a B casting 3 and a C casting 4 are arranged around the riser post 1, the a casting 2, the B casting 3 and the C casting 4 respectively comprise a middle flange 5, an upper shaft sleeve 9 positioned at the top of the flange 5 and a lower shaft sleeve 11 positioned at the bottom of the flange 5, wherein the a casting 2 and the C casting 4 are respectively and symmetrically distributed at two sides of the riser post 1, the B casting 3 is positioned on a vertical bisector of a central connecting line of the a casting 2, the riser post 1 and the C casting 4, the a casting 2, the B casting 3 and the C casting 4 are positioned on the same circumference with the riser post 1 as the center of a circle, connecting blocks 6 are arranged between the riser post 1 and the flange 5 of the a casting 2, the B casting 3 and the C casting 4, and connecting blocks 6 are arranged on the outer wall of the riser post 1 between the a casting 2 and the B casting 3, Be equipped with first heat preservation block 7 between C foundry goods 4 and B foundry goods 3, be equipped with a plurality of second heat preservation blocks 8 on the outer wall of rising head 1 between A foundry goods 2, C foundry goods 4, the length of second heat preservation block 8 is greater than the length of first heat preservation block 7, be equipped with upper shaft sleeve heat preservation post 10 in the upper shaft sleeve 9 of A foundry goods 2, B foundry goods 3, C foundry goods 4, be equipped with lower shaft sleeve heat preservation post 12 in the lower shaft sleeve 11 of A foundry goods 2, B foundry goods 3, C foundry goods 4.
The cross section of the first heat preservation block 7 is of an isosceles triangle structure, wherein the sharp angle of the triangle structure is located between the castings A2 and B3 and between the castings C4 and B3.
And the three-edge joint of the isosceles triangle structure of the first heat-insulating block 7 is provided with a chamfer structure.
The cross section of the second heat preservation block 8 is of a parallelogram structure.
The number of the second heat preservation blocks 8 is two, and the two second heat preservation blocks 8 are uniformly distributed between the casting A2 and the casting C4.
The upper shaft sleeve heat-insulating column 10 and the lower shaft sleeve heat-insulating column 12 are both of cylindrical structures.
The riser column 1 comprises a first tapered column 13 with a narrow top and a wide bottom at the upper end and a second tapered column 14 with a wide top and a narrow bottom at the lower end.
The height of the first tapered pillar 13 is greater than the height of the second tapered pillar 14.
When the casting machine is used for casting, a pair of templates provided with the structure are respectively printed with sand molds in the casting process, each sand mold is provided with a corresponding mold cavity, then the two sand molds are combined, molten iron is cast, the molten iron reaches a pouring gate of one second heat-insulating block 8 on the lower template through a pouring gate of a casting system, enters a pouring gate of the riser column 1 through the pouring gate of the second heat-insulating block 8, fills the casting cavities of the casting A2, the casting B3 and the casting C4 through three output pouring gates of the riser column 1 to form a casting, simultaneously fills pouring gates of the other second heat-insulating block 8 and the two first heat-insulating blocks 7 which are connected with the pouring gate of the riser column 1, and finally fills pouring gates of the upper shaft sleeve heat-insulating column 10 arranged at the upper shaft sleeve 9 and pouring gates of the lower shaft sleeve heat-insulating column 12 arranged at the lower shaft sleeve 11.
The arrangement mode of the casting A2, the casting B3 and the casting C4 ensures that the flange plates 5 close to the casting A2 and the casting B3 and the casting C4 form temperature sharing, but the temperature sharing quantity is still small, the first heat-insulating blocks 7 are respectively added between the casting A2 and the casting B3 and the casting B4 to form a larger temperature sharing area and increase the heat quantity of the flange plates 5, and the casting A2 and the casting C4 do not form a temperature sharing area in typesetting, so that the second heat-insulating blocks 8 are arranged between the casting A2 and the casting C4 to form the temperature sharing area with the casting A2 and the casting C4 to increase the heat quantity of the flange plates 5; the formation of the temperature sharing area is beneficial to the feeding of the structure of the thick flange 5 of the casting A2, the casting B3 and the casting C4 by the riser column 1.
Because the structure of the side shaft sleeve area is weaker, the structure of the flange 5 surface is thicker and larger, and the lower shaft sleeve 11 and the surface area of the flange 5 are weaker, three larger thermal nodes exist in the casting, the thick flange structure, the upper shaft sleeve 9 and the lower shaft sleeve 11, and the flange 5 with the thick structure can be fed by the riser column 2 by using the scheme; the upper shaft sleeve 9 and the lower shaft sleeve 11 need to be respectively added with an upper shaft sleeve heat preservation column 10 and a lower shaft sleeve heat preservation column 12, so that the hottest areas of the thermal junctions of the upper shaft sleeve heat preservation column 10 and the lower shaft sleeve heat preservation column 12 are respectively the upper shaft sleeve heat preservation column 10 and the lower shaft sleeve heat preservation column 12, namely molten iron in the areas is solidified at the latest, and the upper shaft sleeve heat preservation column 10 and the lower shaft sleeve heat preservation column 12 can also supply molten iron to the upper shaft sleeve 9 and the lower shaft sleeve 11 besides carbide in molten iron in the areas is subjected to self-feeding in the solidification process of castings, so that the upper shaft sleeve heat preservation column 10 and the lower shaft sleeve heat preservation column 12 can be concentrated in the central area of the cylinders even if the.
The invention has simple structural design, convenient processing and manufacturing and small occupied template space, the second heat-insulating block 8 is a heat-insulating structure and also plays a role of drainage, the riser column 1 is a feeding main body and also a drainage structure, the upper shaft sleeve heat-insulating column 10 and the lower shaft sleeve heat-insulating column 12 are added to concentrate the heat junctions of the upper shaft sleeve 9 and the lower shaft sleeve 11, and the shrinkage porosity of the upper shaft sleeve heat-insulating column 10 and the lower shaft sleeve heat-insulating column 12 is concentrated; the typesetting mode of the three castings has a temperature sharing effect, so that the riser smoothly feeds the flange disc surface, and the shrinkage porosity defect of the product is reduced.
The invention is a new differential housing structure, the upper shaft sleeve, the lower shaft sleeve and the flange disk are thicker and larger, and the side shaft sleeve area is weaker.
The invention has been described in connection with the accompanying drawings, it is to be understood that the invention is not limited to the specific embodiments disclosed, but is intended to cover various modifications, adaptations or uses of the invention, and all such modifications and variations are within the scope of the invention.
Claims (8)
1. A casting model structure for a large-size differential case with a thick flange plate surface is characterized by comprising a central riser column (1), wherein an A casting (2), a B casting (3) and a C casting (4) are arranged around the riser column (1), the A casting (2), the B casting (3) and the C casting (4) respectively comprise a middle flange plate (5), an upper shaft sleeve (9) positioned at the top of the flange plate (5) and a lower shaft sleeve (11) positioned at the bottom of the flange plate (5), the A casting (2) and the C casting (4) are respectively and symmetrically distributed at two sides of the riser column (1), the B casting (3) is positioned on a vertical bisector of a central connecting line of the A casting (2), the riser column (1) and the C casting (4), the A casting (2), the B casting (3) and the C casting (4) are positioned on the same circumference with the riser column (1) as the center, all be equipped with connecting block (6) between riser post (1) and ring flange (5) of A foundry goods (2), B foundry goods (3), C foundry goods (4), be equipped with first heat insulating block (7) on riser post (1) outer wall between A foundry goods (2) and B foundry goods (3), between C foundry goods (4) and B foundry goods (3), be equipped with a plurality of second heat insulating block (8) on the outer wall of riser (1) between A foundry goods (2), C foundry goods (4), the length of second heat insulating block (8) is greater than the length of first heat insulating block (7), be equipped with upper shaft sleeve heat insulating column (10) in upper shaft sleeve (9) of A foundry goods (2), B foundry goods (3), C foundry goods (4), be equipped with down shaft sleeve heat insulating column (12) in lower shaft sleeve (11) of A foundry goods (2), B foundry goods (3), C foundry goods (4).
2. The casting model structure for the differential case with the thick flange plate surface and the large size as claimed in claim 1, wherein the cross section of the first heat preservation block (7) is in an isosceles triangle structure, wherein the sharp angle of the isosceles triangle structure is positioned between the casting A (2) and the casting B (3) and between the casting C (4) and the casting B (3).
3. The casting model structure for the differential case with the large flange plate surface thickness as claimed in claim 2, wherein the three sides of the isosceles triangle structure of the first heat-preserving block (7) are provided with chamfer structures.
4. The casting model structure for a differential case with a large flange plate surface thickness as claimed in claim 3, wherein the cross section of the second heat-insulating block (8) is of a parallelogram structure.
5. The casting model structure for the differential case with the thick flange plate surface and the large flange plate surface as claimed in claim 4 is characterized in that the number of the second heat-insulating blocks (8) is two, and the two second heat-insulating blocks (8) are uniformly distributed between the casting A (2) and the casting C (4).
6. The casting model structure for the differential case with the large flange plate surface thickness as claimed in claim 5, wherein the upper sleeve insulating column (10) and the lower sleeve insulating column (12) are both cylindrical structures.
7. The casting model structure for a large-sized differential case with a thick flange face as claimed in claim 6, wherein the riser pillars (1) comprise a first tapered pillar (13) with an upper end narrow and a lower end wide, and a second tapered pillar (14) with an upper end wide and a lower end narrow.
8. A casting pattern structure for a large-sized differential case with a thick flange face according to claim 7, characterized in that the height of the first tapered column (13) is greater than that of the second tapered column (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011317575.8A CN112371919A (en) | 2020-11-23 | 2020-11-23 | Casting model structure for large-sized differential housing with thick flange plate surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011317575.8A CN112371919A (en) | 2020-11-23 | 2020-11-23 | Casting model structure for large-sized differential housing with thick flange plate surface |
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| Publication Number | Publication Date |
|---|---|
| CN112371919A true CN112371919A (en) | 2021-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011317575.8A Pending CN112371919A (en) | 2020-11-23 | 2020-11-23 | Casting model structure for large-sized differential housing with thick flange plate surface |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113523192A (en) * | 2021-06-23 | 2021-10-22 | 共享铸钢有限公司 | Casting method of ball valve body |
-
2020
- 2020-11-23 CN CN202011317575.8A patent/CN112371919A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113523192A (en) * | 2021-06-23 | 2021-10-22 | 共享铸钢有限公司 | Casting method of ball valve body |
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