Core bar of half-axle housing sand core
By designing a core bone with axial support column and anti-rotation support block in the half-bridge shell sand core, the problem of sand core prone to break during transportation and storage is solved, the strength and yield of the sand core are improved, and the scrap rate is reduced.
Patent Information
- Application Number
- CN202421525159.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-29
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-06-29
AI Technical Summary
During the casting process of half-bridge shell, the core bones of the half-bridge shell sand core are prone to break during transportation and storage, resulting in a high scrap rate of sand core.
A core bone of a half-bridge shell sand core is designed, including an axial support column and at least two anti-rotation support blocks, which are arranged at intervals in the axial direction of the axial support column and are arranged in an circumferential direction to enhance the radial and axial connection strength of the sand core.
By increasing the anti-rotation support block, the overall strength of the sand core is improved, the core bones are prevented from rotating, the rotation between the sections after the sand core is broken is avoided, the scrap rate is reduced, the yield is improved, and production and storage costs are saved.
Smart Images
Figure CN222890525U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of bridge shell casting, in particular to a core bone of a half bridge shell sand core. Background Art
[0002] A sand core is a forming tool used in casting to form cavities, holes and complex shapes in castings.
[0003] Its main functions are as follows:
[0004] 1. Supporting function: During the production process of castings, the sand core plays a role in supporting the internal cavity of the casting and ensuring the integrity of the internal structure of the casting.
[0005] 2. Positioning function: In the casting process, the sand core plays a positioning role to ensure the accuracy of casting precision and size.
[0006] 3. Ventilation: During casting, the sand core can also provide space for ventilation holes, which allows gas and impurities to be discharged smoothly from the casting, ensuring the quality of the casting.
[0007] In the prior art, when casting a bridge shell, a sand core is also usually used. In order to ensure the structural strength and rigidity of the sand core, a core bone is usually arranged in the sand core. Since the bridge shell is large in size and has a complex structure, the bridge shell is usually cast in sections.
[0008] During the casting process of the half bridge housing, Figure 1 As shown, the cross-sectional area of each section of the half-bridge shell sand core 2 is quite different, and it is easy to break in the thinner part, for example, the oil channel part A is easy to break. The use of ordinary core bones can only ensure that the two parts connected by the core bones will not be separated when the sand core body breaks. However, the two or more broken sections of the sand core will rotate circumferentially during the transportation, storage and transportation process, causing the oil channel part A to be dislocated and scrapped. This leads to a high scrap rate during the transportation, storage and transportation of the sand core. Utility Model Content
[0009] In order to overcome the deficiencies of the above-mentioned prior art, the technical problem to be solved by the utility model is to provide a core bone of a half-bridge shell sand core, which improves the overall strength of the sand core and can prevent the core bone from rotating in the sand core. Even if the sand core is broken, it can ensure that the broken sections of the sand core do not rotate, thereby improving the sand core yield and reducing the scrap rate of the sand core during storage and transportation.
[0010] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0011] A core bone of a half bridge shell sand core, wherein the core bone of the half bridge shell sand core is fixed in the half bridge shell sand core, and is characterized in that:
[0012] The core bone of the half bridge shell sand core includes an axial support column and at least two anti-rotation support blocks. The axial support column is arranged axially along the half bridge shell sand core, and the anti-rotation support blocks are respectively fixed on the axial support column. The anti-rotation support blocks are arranged at intervals in the axial direction of the axial support column, and at least two of the anti-rotation support blocks are staggered in the circumferential direction of the axial support column.
[0013] Preferably, there are two anti-rotation support blocks, namely a first anti-rotation support block and a second anti-rotation support block, the first anti-rotation support block and the second anti-rotation support block are spaced apart in the axial direction of the axial support column, and the first anti-rotation support block and the second anti-rotation support block are staggered in the circumferential direction of the axial support column.
[0014] Preferably, the first anti-rotation support block and the second anti-rotation support block are arranged 180° apart in the circumferential direction of the axial support column.
[0015] Preferably, the anti-rotation support block is provided with an oblique cut surface for facilitating the extraction of the core bone of the half bridge shell sand core.
[0016] Preferably, the included angle between the chamfered surface and the axis of the axial support column is α, and 30°≤α≤60°.
[0017] Preferably, the anti-rotation support block is fixed to the axial support column by welding.
[0018] After adopting the above technical solution, the beneficial effects of the utility model are:
[0019] The core bone of the half-bridge shell sand core of the utility model includes an axial support column and at least two anti-rotation support blocks. The axial support column is arranged along the axial direction of the half-bridge shell sand core. The anti-rotation support blocks are respectively fixed on the axial support column. The anti-rotation support blocks are arranged at intervals in the axial direction of the axial support column. At least two anti-rotation support blocks are staggered in the circumferential direction of the axial support column. The core bone of the half-bridge shell sand core improves the radial and axial connection strength of the sand core, and can prevent the core bone from rotating to cause the overall strength of the sand core to decrease. At the same time, even if the half-bridge shell sand core is broken into multiple sections, it can prevent the relative rotation between the sections of the sand core, and avoid the circumferential rotation of the sand core after the sand core is broken, which causes the sand core to be scrapped. The sand core yield is improved and the production cost is reduced. At the same time, the scrap rate of the half-bridge shell sand core during storage and transportation is reduced, saving process costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a three-dimensional schematic diagram of a half bridge shell sand core in the prior art;
[0021] Figure 2 It is a schematic diagram of the structure in which the core bone of the half bridge shell sand core of the utility model is located inside the half bridge shell sand core;
[0022] Figure 3 It is a three-dimensional schematic diagram of the core bone of the half bridge shell sand core of the utility model;
[0023] Figure 4 yes Figure 3 A schematic front view of the core bone of the middle half bridge shell sand core;
[0024] Figure 5 yes Figure 4 A magnified top view of the middle half bridge shell sand core;
[0025] Figure 1 Middle: 2. Sand core of half bridge housing; A. Oil channel part;
[0026] Figures 2 to 5 Middle: 1. Core bone of half bridge shell sand core; 101. Axial support column; 102. First anti-rotation support block; 103. Second anti-rotation support block; 2. Half bridge shell sand core; E. Beveled surface. DETAILED DESCRIPTION
[0027] The technical solution of the utility model is described in detail below in conjunction with the accompanying drawings and specific embodiments to further understand the purpose, solution and effect of the utility model, but it is not intended to limit the scope of protection of the claims attached to the utility model.
[0028] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.
[0029] In addition, although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.
[0030] The embodiment of the utility model discloses Figures 2 to 5The core bone 1 of the half bridge shell sand core shown together is fixed in the half bridge shell sand core 2. The core bone 1 of the half bridge shell sand core includes an axial support column 101 and at least two anti-rotation support blocks. According to the size setting of the core bone of the half bridge shell sand core, two anti-rotation support blocks can be provided, or three anti-rotation support blocks can be provided, or multiple anti-rotation support blocks can be provided. The number of anti-rotation support blocks is set according to needs. The axial support column 101 is arranged along the axial direction of the half bridge shell sand core, and the anti-rotation support blocks are respectively fixed on the axial support column 101. The anti-rotation support blocks are arranged at intervals in the axial direction of the axial support column 101, and at least two anti-rotation support blocks are staggered in the circumferential direction of the axial support column 101.
[0031] Compared with traditional core bones, the core bone of the half bridge shell sand core of the utility model has an anti-rotation support block added to it, which is equivalent to adding radial positioning, thereby preventing the core bone from rotating relative to the sand core. Even if the half bridge shell sand core is broken into multiple sections, relative rotation between the sections of the sand core can be prevented, thereby preventing the oil channel part (or other thinner parts) from being dislocated and causing the half bridge shell sand core to be scrapped.
[0032] like Figure 3 and Figure 4 As shown, preferably, two anti-rotation support blocks are provided, namely a first anti-rotation support block 102 and a second anti-rotation support block 103. The first anti-rotation support block 102 and the second anti-rotation support block 103 are spaced apart in the axial direction of the axial support column 101, and the first anti-rotation support block 102 and the second anti-rotation support block 103 are staggered in the circumferential direction of the axial support column 101.
[0033] like Figure 4 and Figure 5 As shown, the first anti-rotation support block 102 and the second anti-rotation support block 103 are arranged 180° apart in the circumferential direction of the axial support column 101 .
[0034] In some embodiments, the anti-rotation support block is provided with an oblique cut surface E for facilitating the extraction of the core bone of the half bridge shell sand core. The angle between the oblique cut surface E and the axis of the axial support column 101 is α, 30°≤α≤60°.
[0035] The arrangement of the chamfered surface E on the anti-rotation support block facilitates the extraction of the core bone of the half bridge shell sand core from the inner cavity of the workpiece.
[0036] In some embodiments, the anti-rotation support block is preferably welded to the axial support column 101. Figure 3 As shown, the first anti-rotation support block 102 and the second anti-rotation support block 103 are respectively welded and fixed to the axial support column 101 .
[0037] The core bone of the half-bridge shell sand core of the utility model improves the radial and axial connection strength of the sand core, can prevent the core bone from rotating and causing the overall strength of the sand core to decrease, and at the same time, even if the half-bridge shell sand core is broken into multiple sections, it can prevent the relative rotation between the sections of the sand core, and can avoid the circumferential rotation of the sand core after the sand core is broken, causing the sand core to be scrapped. The sand core yield is improved and the production cost is reduced. At the same time, the scrap rate of the half-bridge shell sand core during storage and transportation is reduced, saving process costs.
[0038] The technical solution of the utility model is described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments. Those skilled in the art should understand that various changes made thereto in form and details fall within the protection scope defined by the claims of the utility model.
Claims
1. A core bone of a half bridge shell sand core, wherein the core bone of the half bridge shell sand core is fixed in the half bridge shell sand core, characterized in that: The core bone of the half bridge shell sand core includes an axial support column and at least two anti-rotation support blocks. The axial support column is arranged axially along the half bridge shell sand core, and the anti-rotation support blocks are respectively fixed on the axial support column. The anti-rotation support blocks are arranged at intervals in the axial direction of the axial support column, and at least two of the anti-rotation support blocks are staggered in the circumferential direction of the axial support column.
2. The core bone of the half bridge shell sand core according to claim 1, characterized in that: There are two anti-rotation support blocks, namely a first anti-rotation support block and a second anti-rotation support block. The first anti-rotation support block and the second anti-rotation support block are spaced apart in the axial direction of the axial support column, and the first anti-rotation support block and the second anti-rotation support block are staggered in the circumferential direction of the axial support column.
3. The core bone of the half bridge shell sand core according to claim 2, characterized in that: The first anti-rotation support block and the second anti-rotation support block are arranged 180° apart in the circumferential direction of the axial support column.
4. The core bone of the half bridge shell sand core according to claim 1, characterized in that: The anti-rotation support block is provided with an oblique cut surface for facilitating the extraction of the core bone of the half bridge shell sand core.
5. The core bone of the half bridge shell sand core according to claim 4, characterized in that: Assume that the included angle between the chamfered surface and the axis of the axial support column is α, 30°≤α≤60°.
6. The core bone of the half bridge shell sand core according to any one of claims 1 to 5, characterized in that: The anti-rotation support block is fixed to the axial support column by welding.