A half-bridge shell sand core assembling tool
By designing a movable seat and guide rod for the half-bridge housing sand core assembly tooling, the problem of tilting and misalignment of sand cores in the casting of automotive rear axle housings was solved, achieving precise docking and stable assembly of sand cores, and improving yield and processing quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG HAOXIN MACHINERY CO LTD
- Filing Date
- 2025-06-20
- Publication Date
- 2026-07-21
AI Technical Summary
In the casting process of automobile rear axle housing, existing technologies often result in sand cores that are prone to tilting and misalignment during assembly, leading to large dimensional deviations in the castings and affecting processing and use.
A semi-bridge shell sand core assembly fixture is adopted. By setting a moving seat and a guide rod, the linear movement and precise docking of the sand core are ensured. The combination of the fixed part and the moving part, combined with the locking device, achieves accurate positioning and fixation of the sand core.
It improves the accuracy and stability of sand core assembly, reduces dimensional deviations in castings, and increases yield and assembly efficiency.
Smart Images
Figure CN224525938U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of sand core assembly equipment, specifically to a semi-bridge shell sand core assembly tooling. Background Technology
[0002] In the complex system of automobile construction, the rear axle, as an indispensable part of the vehicle chassis, plays a crucial role. It not only connects the body to the rear wheels, but also undertakes a variety of functions, the performance of which varies depending on the vehicle design and drive system.
[0003] To ensure the structural strength and rigidity of the sand core, the rear axle housing of a car is generally cast. In the existing technology, sand cores are also commonly used when casting axle housings, and core skeletons are usually placed inside the sand core.
[0004] Because the bridge shell is large and complex in structure, the sand core of the bridge shell is usually made in sections and then assembled. When the long axis sand core of the bridge shell cavity passes through the manual core assembly, the sand core is prone to tilting, and misalignment and incomplete assembly are very likely to occur. During the sand core transfer process, secondary misalignment will also occur, resulting in large deviations in the dimensions of the subsequent castings and uneven wall thickness, which will affect subsequent processing and use. Utility Model Content
[0005] To overcome the above-mentioned defects, the purpose of this utility model is to provide a half-bridge shell sand core assembly tooling, which ensures the linear movement of the moving seat by setting a moving seat and a guide rod, thereby ensuring the accuracy of the position of the two sand cores, ensuring the uniform thickness of the cast parts, and improving the yield rate.
[0006] To achieve the above objectives, this utility model provides a half-bridge housing sand core assembly tooling, comprising: a base, on which a fixed part and a movable part are respectively provided; the fixed part includes a half-bridge housing side fixing seat, a half-bridge housing support seat, and a half-bridge housing limiting seat, the half-bridge housing support seat being located between the half-bridge housing side fixing seat and the half-bridge housing limiting seat; the half-bridge housing limiting seat being located at the tail of the base and having a limiting groove for restricting the movement of the half-bridge housing sand core; the movable part includes a movable seat and a guide rod, the movable seat having a groove for placing the half-bridge housing sand core, the guide rod being fixedly connected to the base, the movable seat being sleeved and slidably connected to the guide rod, and the axis of the guide rod being parallel to the axis of the half-bridge housing sand core.
[0007] Preferably, the movable seat includes a connecting plate, on which a first half-bridge housing limiting seat, a second half-bridge housing limiting seat, and a half-bridge housing support seat are respectively fixed.
[0008] Preferably, there are two guide rods, and the first half-bridge housing limiting seat and the second half-bridge housing limiting seat are slidably connected to the guide rods via linear bearings.
[0009] Preferably, the base is also provided with multiple height adjustment blocks at its bottom.
[0010] Preferably, the first half-bridge housing limiting seat and the second half-bridge housing are further provided with a locking device for restricting the movement of the linear bearing.
[0011] Preferably, the bearing locking device is a bearing locking bolt.
[0012] Preferably, one of the half-shaft housing support seats is also provided with an arc-shaped positioning groove on its top.
[0013] The beneficial technical effects achieved by this utility model after adopting the above technical solution are as follows:
[0014] 1. Due to the inclusion of a fixed part and a movable part, the half-bridge housing sand core and the half-shaft housing sand core are placed in the movable part and the fixed part respectively. When the movable seat slides along the guide rod, the characteristics of the guide rod itself can ensure that the half-bridge housing sand core and the half-shaft housing sand core are precisely aligned. During the movement, the two will not be damaged by angular deviation. It can also effectively solve the problems of sand core misalignment, tilting and incomplete assembly. Therefore, after the sand core assembly is aligned, the parts are of uniform thickness during the casting process, the yield rate is increased, and the sand core assembly efficiency can be accelerated.
[0015] 2. Since a locking bolt is provided between the first half-bridge housing limit seat and the second half-bridge housing, as a locking device to restrict the movement of the linear bearing, after the sand core is assembled into a combined sand core, the moving part is locked and fixed, ensuring that the position of the assembled sand core will not change during the movement of the base, thereby further ensuring the stability after transfer and avoiding secondary assembly. Attached Figure Description
[0016] Figure 1 This is a schematic diagram showing the positional relationship between the fixed part and the movable part in this utility model;
[0017] Figure 2 This is a utility model Figure 1 Top view;
[0018] Figure 3 This is a schematic diagram showing the position of the middle half-shaft housing of this utility model;
[0019] Figure 4 This is a schematic diagram showing the state of the middle half-shaft housing and the half-bridge housing after docking.
[0020] In the diagram,
[0021] 1. Base; 11. Height adjustment block;
[0022] 2. Fixing part; 21. Half-shaft housing side fixing seat; 22. Half-shaft housing support seat; 221. Arc-shaped positioning groove; 23. Half-shaft housing limiting seat; 231. Limiting groove;
[0023] 3. Moving part; 31. Connecting plate; 32. First half-bridge housing limiting seat; 33. Second half-bridge housing limiting seat; 34. Half-bridge housing support seat; 35. Guide rod; 36. Bearing locking bolt
[0024] 4. Half-shaft housing sand core; 5. Half-bridge housing sand core. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.
[0026] See Figures 1-4 This utility model provides a tooling for assembling a half-bridge housing sand core, including: a base 1, on which a fixed part 2 and a movable part 3 are respectively provided; the base 1 is used to support various components, and a height adjustment block 11 is provided at the bottom, which can adjust the level of the base 1 to ensure that the movable part 3 will not slide on its own. In actual use, the fixed part 2 is generally used to place the half-bridge housing sand core 5, and the movable part 3 is generally used to place the half-shaft housing sand core 4, and the two can also be interchanged.
[0027] The fixing part 2 includes a half-shaft housing side fixing seat 21, a half-shaft housing support seat 22 and a half-shaft housing limiting seat 23. The half-shaft housing support seat is located between the half-shaft housing side fixing seat 21 and the half-shaft housing limiting seat 23. The half-shaft housing limiting seat 23 is located at the tail of the base 1 and is provided with a limiting groove 231 to restrict the movement of the half-shaft housing sand core 4.
[0028] The movable part 3 includes a movable seat and a guide rod 35. The movable seat has a groove for placing the half-axle housing sand core 5. The guide rod 35 is fixedly connected to the base 1. The two movable seats are sleeved and slidably connected to the guide rod 35, and the axis of the guide rod 35 is parallel to the axis of the half-axle housing sand core 4. This utility model is mainly used for the installation between the full axle or half-axle sand core and the axle sand core in vehicles, especially for the docking of casting sand cores. This utility model is used when the half-axle housing sand core 4 and the half-axle housing sand core 5 are made and docked to form a combined mold. The half-shaft housing sand core 4 is placed in the grooves of the first half-bridge housing limiting seat 32 and the second half-bridge housing limiting seat 33. Its front part is supported and limited by the half-shaft housing limiting seat 23. The half-shaft housing sand core 4 is placed in the fixing part 2, and its tail part is limited by the limiting groove 231 of the half-shaft housing limiting seat 23. After the bottom part is positioned by the arc-shaped positioning groove 221, it is supported by multiple half-shaft housing support seats 22. The two sides of the half-shaft housing sand core 4 are fixed by the half-shaft housing side fixing seats 21. In order to ensure the accuracy of the docking, the installation angle of the two guide rods 35 is required to be high, especially to ensure that they are parallel to the axis. In this way, when sliding, under the premise that the placement position is correct, the axes of the half-shaft housing sand core 4 and the half-bridge housing sand core 5 can be docked with maximum accuracy.
[0029] The present invention comprises two guide rods 35. The first half-bridge housing limiting seat 32 and the second half-bridge housing limiting seat 33 are slidably connected to the guide rods 35 via linear bearings. Linear bearings are used to reduce friction and are a mature existing technology; they can generally be purchased directly as needed. The rear end of the half-bridge housing sand core 5 is engaged in the grooves of the first half-bridge housing limiting seat 32 and the second half-bridge housing limiting seat 33. The half-bridge housing support seat 34 supports its front end, and the connecting plate 31 ensures the synchronicity of the sliding. During the assembly and docking process, friction will be generated between the two. The rear end of the half-shaft housing sand core 4 is limited by the limiting groove 231 and cannot move. The half-shaft housing side fixing seat 21 and the half-shaft housing support seat 22 also limit its movement, preventing tilting or rotation. To ensure proper assembly, a limiting block is generally also added between the half-shaft housing sand core 4 and the half-bridge housing sand core 5.
[0030] The first half-bridge housing limiting seat 32 and the second half-bridge housing of this utility model are further provided with a bearing locking device for restricting the movement of the linear bearing. The bearing locking device of this utility model is a bearing locking bolt 36. See also... Figure 1 In this hole, a bearing locking bolt 36 is installed. The bearing locking bolt 36 is used to restrict the movement of the moving part 3, ensuring that the positions of the two sand cores do not change during movement. This is achieved by increasing friction by tightening the bearing locking bolt 36, thus preventing slippage. In addition to using the bearing locking bolt 36, locking clamps or other clamping devices can also be used to ensure that the movement position does not change.
[0031] One of the axle housing support seats 22 of this utility model is also provided with an arc-shaped positioning groove 221 on its top. The arc-shaped positioning groove 221 is used to position and support the axle housing sand core 4, ensuring its height and position.
[0032] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.
Claims
1. A tooling for assembling a semi-bridge shell sand core, characterized in that, include: A base, wherein a fixed part and a movable part are respectively provided on the base; The fixing part includes a half-shaft housing side fixing seat, a half-shaft housing support seat and a half-shaft housing limiting seat. The half-shaft housing support seat is located between the half-shaft housing side fixing seat and the half-shaft housing limiting seat. The half-shaft housing limiting seat is located at the tail of the base and is provided with a limiting groove to restrict the movement of the half-shaft housing sand core. The movable part includes a movable seat and a guide rod. The movable seat is provided with a groove for placing the half-bridge housing sand core. The guide rod is fixedly connected to the base. The movable seat is sleeved and slidably connected to the guide rod, and the axis of the guide rod is parallel to the axis of the half-bridge housing sand core.
2. The semi-bridge shell sand core assembly tooling according to claim 1, characterized in that, The movable seat includes a connecting plate, on which a first half-bridge housing limiting seat, a second half-bridge housing limiting seat, and a half-bridge housing support seat are respectively fixed.
3. The semi-bridge shell sand core assembly tooling according to claim 2, characterized in that, There are two guide rods, and the first half-bridge housing limiting seat and the second half-bridge housing limiting seat are slidably connected to the guide rods through linear bearings.
4. The semi-bridge shell sand core assembly tooling according to claim 1, characterized in that, The base is also equipped with multiple height adjustment blocks at its bottom.
5. The semi-bridge shell sand core assembly tooling according to claim 3, characterized in that, The first half-bridge housing limiting seat and the second half-bridge housing are also respectively provided with a locking device for restricting the movement of the linear bearing.
6. The semi-bridge shell sand core assembly tooling according to claim 5, characterized in that, The locking device is a bearing locking bolt.
7. The semi-bridge shell sand core assembly tooling according to claim 1, characterized in that, One of the half-shaft housing support seats is also provided with an arc-shaped positioning groove on its top.