Combined structure for replacing axis steel sleeve

Abstract

The utility model discloses an axle center steel sleeve replacement combination structure which comprises a core rod, an axle center sleeve, an axle center steel sleeve, an axle center steel sleeve and an axle center steel sleeve, the core rod and the axis sleeve are placed on the placement platform, the core rod is sleeved with a combined replacement kit, and the combined replacement kit is used for being combined to form kit structures with different diameters. According to the core rod, the corresponding main shaft sleeve and the corresponding mold sleeve piece can be selected based on the specific machining size and machining technology, then the configuration scheme that the sleeve pieces are replaced in a combined mode with different mechanical properties is formed, and the universality of the core rod is effectively improved; the main suite and the die suite which are different in diameter size are sequentially arranged outside the core rod in a sleeving mode, more storage space can be saved while disassembly, assembly and maintenance or replacement are facilitated, when any assembly is damaged, only parts of the same size need to be replaced for continuous use, and the design and machining cost is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of cold isostatic pressing technology, specifically to a replacement assembly structure for a shaft steel sleeve. Background Technology

[0002] Cold isostatic pressing is a molding technique that uses a liquid medium (such as oil or water) to transmit uniform pressure at room temperature. It uses ultra-high pressure (usually 100-630 MPa) to uniformly press powder or blanks in all directions at room temperature, providing blanks for further sintering, forging or hot isostatic pressing processes. It is widely used in ceramics, powder metallurgy and other fields.

[0003] A mandrel is a supporting structure in a cold isostatic pressing mold, typically a rigid rod used to maintain the mold shape and prevent deformation of the blank during pressing or processing. Taking ceramic materials as an example, before processing, a mandrel of the corresponding diameter needs to be placed in the processing cylinder of the cold isostatic pressing equipment. When the mandrel size changes and becomes unsuitable, a certain thickness needs to be ground off before it can continue to be used. If the mandrel needs to be ground many times, it will be scrapped and cannot be used anymore, requiring replacement with a new mandrel. Utility Model Content

[0004] The purpose of this utility model is to provide a shaft steel sleeve replacement assembly structure to solve the above problems.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution, including:

[0006] A mandrel, the top of which is fitted with a spindle sleeve, the spindle sleeve being used for hoisting the mandrel;

[0007] The mandrel and the shaft sleeve are placed on the mounting platform. The mandrel is fitted with a combination replacement kit, which is used to combine and form kit structures of different diameters.

[0008] As a further description of the above technical solution, the inner diameter of the shaft sleeve is less than or equal to the outer diameter of the mandrel.

[0009] As a further description of the above technical solution, a lifting rod is connected to the top of the shaft sleeve.

[0010] As a further description of the above technical solution, a lifting ring is connected to the top of the lifting rod.

[0011] As a further description of the above technical solution, the combined replacement kit includes a main kit and multiple sets of mold kits that are combined and fitted together, and the material of the combined replacement kit is steel.

[0012] As a further description of the above technical solution, the main kit and the mold kit are concentric hollow cylinders.

[0013] As a further description of the above technical solution, the diameter of the main kit is 80-100mm.

[0014] As a further description of the above technical solution, the mold kit is provided in 2-5 sets.

[0015] As a further description of the above technical solution, the diameter of the mold kit increases sequentially.

[0016] As a further description of the above technical solution, the diameter of the mold kit is 100-200mm.

[0017] The beneficial effects of this utility model are as follows:

[0018] 1. This utility model allows for the selection of corresponding spindle sleeves and mold kits based on specific processing dimensions and processes, thereby forming a configuration scheme for interchangeable kits with different mechanical properties, effectively improving the versatility of the mandrel;

[0019] 2. In this utility model, main kits and mold kits of different diameter sizes are sequentially fitted onto the outside of the mandrel, which facilitates disassembly, maintenance or replacement while saving more storage space. Moreover, when any component is damaged, it can continue to be used simply by replacing the part of the same size, effectively reducing design and processing costs.

[0020] To more clearly illustrate the structural features and functions of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the shaft steel sleeve replacement assembly structure of this utility model;

[0022] Figure 2 This is the front view of the shaft steel sleeve replacement assembly structure of this utility model;

[0023] Figure 3 yes Figure 1 The main view of the combined replacement kit.

[0024] Figure label:

[0025] 1. Mandrel; 2. Shaft sleeve; 21. Lifting rod; 22. Lifting ring; 3. Placement platform; 4. Combination replacement kit; 41. Main kit; 42. Mold kit. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0027] like Figures 1-3 As shown, in one embodiment, a shaft sleeve replacement assembly structure includes: a mandrel 1, with a shaft sleeve 2 sleeved on the top of the mandrel 1, used to lift and move the mandrel 1 to a preset position by a lifting device; after the mandrel 1 and the shaft sleeve 2 are sleeved together, they are placed on the placement platform 3 by lifting; and a replacement assembly 4 is correspondingly sleeved on the outside of the mandrel 1, which can form a combination assembly of different diameters, thereby adapting to different processing sizes and processing processes.

[0028] Understandably, before performing the cold isostatic pressing process, the corresponding spindle sleeve and mold kit 42 can be selected based on the specific processing dimensional parameters of the target product (including material type, billet diameter, height, wall thickness, etc.) and process parameters (such as holding time, pressurization rate, medium temperature, etc.), thereby forming a configuration scheme for replacing kit 4 with different mechanical properties, which effectively improves the versatility of the mandrel 1.

[0029] Furthermore, the inner diameter of the spindle sleeve 2 is less than or equal to the outer diameter of the mandrel 1. Specifically, a lifting rod 21 is connected to the top of the spindle sleeve 2, and a lifting ring 22 is connected to the top of the lifting rod 21, so that the mandrel 1 and the spindle sleeve 2 can be placed on the placement platform 3 by hooking the lifting ring 22 with the hook of the lifting equipment.

[0030] Please continue reading. Figures 1-3 In this embodiment, the combination replacement kit 4 includes a main kit 41 and multiple sets of mold kits 42 that are combined and fitted together, and the combination replacement kit 4 is made of high-performance steel.

[0031] Specifically, for the molding requirements of different material systems (such as ceramic matrix, metal matrix or composite materials), a main kit 41 and a mold kit 42 with gradient stiffness can be configured. Within a certain range, appropriately increasing the number of sleeves of the mold kit 42 can improve the structural strength, dimensional accuracy and surface quality of the combined replacement kit 4. In order to obtain the best mechanical properties, a mapping relationship between the mechanical properties (elastic modulus, Poisson's ratio) of the main sleeve material and the shape coefficient of the mold cavity can be established. A three-dimensional mechanical property map containing parameters such as density distribution curve, residual stress level and microstructure uniformity can be pre-designed. Then, according to the specific application requirements and process conditions, a suitable sleeve number configuration scheme can be selected.

[0032] Specifically, the main component 41 and the mold component 42 are concentric hollow cylinders. The diameter of the main component 41 is 80-100mm, and there are 2-5 sets of mold components 42, with the diameter of each mold component 42 increasing sequentially, ranging from 100-200mm. For example, as... Figure 3As shown, when the outer diameter (OD) of the shaft is 100mm, the inner diameter (ID) of the main kit 41 is 100mm and the outer diameter (OD) is 120mm; correspondingly, the inner diameter (ID) of the first mold kit 42 is 120mm and the outer diameter (OD) is 140mm; ...; the inner diameter (ID) of the fourth mold kit 42 is 180mm and the outer diameter (OD) is 200mm.

[0033] Through the above technical solution, this application eliminates the need to prepare mandrels 1 of the corresponding size for each processing, thus solving the problem of high production and maintenance costs and large storage space caused by the need to produce many specifications of mandrels 1. By combining the main spindle sleeve and various mold kits 42, the main kits 41 and mold kits 42 with different diameter sizes are sequentially fitted onto the outside of the mandrel 1 in a specific order, which can facilitate disassembly, maintenance or replacement while saving more storage space. Moreover, when any component is damaged, it is only necessary to directly replace the part of the same size to continue production, which effectively reduces design and processing costs.

[0034] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A shaft steel sleeve replacement assembly structure, characterized in that, include: A mandrel (1) is fitted with a shaft sleeve (2) at its top, and the shaft sleeve (2) is used to hoist the mandrel (1). The mandrel (1) and the shaft sleeve (2) are placed on the mounting platform (3). The mandrel (1) is fitted with a combination replacement kit (4), which is used to combine and form kit structures of different diameters.

2. The shaft steel sleeve replacement assembly structure according to claim 1, characterized in that, The inner diameter of the shaft sleeve (2) is less than or equal to the outer diameter of the mandrel (1).

3. The shaft steel sleeve replacement assembly structure according to claim 1, characterized in that, The top of the shaft sleeve (2) is connected to a lifting rod (21).

4. The shaft steel sleeve replacement assembly structure according to claim 3, characterized in that, The top of the lifting rod (21) is connected to a lifting ring (22).

5. The shaft steel sleeve replacement assembly structure according to claim 1, characterized in that, The combined replacement kit (4) includes a main kit (41) and multiple sets of combined mold kits (42), and the combined replacement kit (4) is made of steel.

6. The shaft steel sleeve replacement assembly structure according to claim 5, characterized in that, The main kit (41) and the mold kit (42) are concentric hollow cylinders.

7. The shaft steel sleeve replacement assembly structure according to claim 5, characterized in that, The diameter of the main component (41) is 80-100mm.

8. The shaft steel sleeve replacement assembly structure according to claim 5, characterized in that, The mold kit (42) is provided in 2-5 sets.

9. The shaft steel sleeve replacement assembly structure according to claim 5, characterized in that, The diameter of the mold kit (42) increases sequentially.

10. The shaft steel sleeve replacement assembly structure according to claim 5, characterized in that, The diameter of the mold kit (42) is 100-200mm.

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