Jig for finish machining of yttrium oxide ceramic
By designing a jig for the finishing of yttrium oxide ceramics, and utilizing a combination of a hot-melt wax layer and an alumina ceramic base, the problem of the fragility of ceramic products during finishing was solved, and high-precision flatness of ceramic products was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU DREAMCHASING ELECTRONIC MATERIALS CO LTD
- Filing Date
- 2025-04-18
- Publication Date
- 2026-04-17
AI Technical Summary
In existing technologies, ceramic products are easily crushed by metal chucks during surface finishing, and there is a lack of stable clamping solutions.
Design a jig for precision machining of yttrium oxide ceramics, which adopts a disc base and a detachable disc clamp. The clamp consists of arc-shaped concave clamping blocks, uses a hot-melt wax layer to fix the ceramic product, and improves stability and precision through the alumina ceramic base.
It achieves stable clamping of ceramic products, avoids breakage, ensures high-precision flatness requirements, and achieves nanometer-level flatness after processing.
Smart Images
Figure CN224129550U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of jig development technology, specifically relating to a jig for the finishing of yttrium oxide ceramics. Background Technology
[0002] Currently, in existing technologies, the surface finishing of ceramic products typically involves directly clamping the ceramic product with a three-jaw or four-jaw chuck, followed by grinding with a rotary table mill. However, because ceramics are inherently fragile, directly clamping them with a metal chuck can easily result in breakage during the clamping process. Therefore, a fixture for the finishing of yttrium oxide ceramics has been designed to address these issues.
[0003] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of this utility model and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background section of this utility model. Utility Model Content
[0004] To overcome the shortcomings of the prior art, the purpose of this utility model is to provide a jig for finishing yttrium oxide ceramics.
[0005] To achieve the above and other related objectives, the technical solution provided by this utility model is: a fixture for precision machining of yttrium oxide ceramics, comprising: a disc base, the disc base including an upper surface for placing ceramic products and a lower surface for contacting a heating / cooling table, the upper surface and the lower surface being arranged parallel to each other; a hot-melt wax layer being disposed on the upper surface, the hot-melt wax layer being located between the disc base and the ceramic product; and a disc clamp, the disc clamp being detachably disposed on the outside of the disc base.
[0006] Furthermore, the disc clamp is composed of several clamping blocks with arc-shaped concave surfaces on their inner sides. These arc-shaped concave surfaces correspond to the outer surface structure of the disc base, and each clamping block is evenly distributed around the disc base. In this design, the disc clamp is composed of several clamping blocks, which facilitates manufacturing, disassembly, and clamping.
[0007] Furthermore, the clamping block has a stepped structure with an L-shaped cross-section. The height of the side of the clamping block closest to the disc base is greater than the height of the side furthest from the disc base. In this design, the L-shaped stepped structure of the clamping block facilitates its placement and removal on the rotary table grinding machine. The higher side of the clamping block is positioned closer to the disc base, ensuring sufficient contact area between the clamping block and the outer surface of the disc base, thus guaranteeing stable clamping and improving positioning accuracy.
[0008] Furthermore, the cross-sectional length of the clamping block is greater than its cross-sectional height, and the ratio of this length to height is 1.5:1 to 3:1. In this design, the sufficient length of the clamping block relative to its height allows it to be placed more stably on the rotary table grinding machine, improving positioning accuracy.
[0009] Furthermore, the height of the clamping block is greater than 4 / 5 of the thickness of the disc base, and the height of the clamping block is less than or equal to the thickness of the disc base. In this design, the height of the clamping block is close to or equal to the thickness of the disc base, ensuring sufficient contact height between the inner surface of the clamping block and the side surface of the disc base. This allows for better clamping of the disc base and a more stable clamping state.
[0010] Furthermore, the circumferential distance between adjacent clamping blocks is less than 1 / 4 of the circumference of the disc base. In this design, excessive circumferential spacing between adjacent clamping blocks is avoided, ensuring stable clamping of the disc base even when the disc clamp is divided into multiple clamping blocks.
[0011] Furthermore, the parallelism between the upper and lower surfaces of the disc base is <10μm. This design reduces gaps or misalignments caused by parallelism deviations between the upper and lower surfaces, ensuring a tight fit when ceramic products are placed on the upper surface. It also avoids additional wear or vibration caused by uneven force on the disc base, ensuring the accuracy of subsequent processing and inspection.
[0012] Furthermore, the disc base is made of alumina ceramic. In this design, alumina ceramic has high hardness and excellent wear resistance; it is also heat-resistant, making it easy to use on a heating platform; and it can achieve nanoscale surface roughness through polishing, resulting in high precision.
[0013] Furthermore, a detachable fixing seat is provided on one side of the disc base, and a pressure plate is connected to the fixing seat, with the pressure plate located above the disc base. In this design, during cooling, the fixing seat can be installed on one side of the disc base, causing the pressure plate to press down on the ceramic product. This ensures that the ceramic product and the disc base are in close contact during cooling, resulting in a smaller parallelism between the grinding surface of the ceramic product and the plane of the disc base.
[0014] Furthermore, the pressure plate is movable up and down on the fixed base. In this design, the movable pressure plate makes operation more convenient when pressing down on the ceramic product.
[0015] Due to the application of the above technical solution, the beneficial effects of this utility model compared with the prior art are as follows:
[0016] The jig for finishing yttrium oxide ceramics designed in this utility model can provide sufficient strength to fix ceramic products by utilizing the adhesive force of hot melt wax. At the same time, it can fill the irregular surface of ceramic products, ensuring full fit during product processing. This avoids the breakage caused by directly clamping ceramic products with traditional metal chucks, and also enables the flatness of the finished ceramic products to meet high precision requirements. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the fixture structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the disc clamp structure of this utility model;
[0019] Figure 3 This is a schematic diagram of the clamping block structure of this utility model;
[0020] Figure 4 This is a schematic diagram of Embodiment 2 of the present invention;
[0021] In the above attached figures, 1 is the ceramic product; 2 is the disc base; 3 is the hot melt wax layer; 4 is the disc clamp; 41 is the clamping block; 411 is the arc-shaped concave surface; 412 is the cross-section; 5 is the fixing seat; and 6 is the pressure plate. Detailed Implementation
[0022] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.
[0023] It should be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0025] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.
[0026] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.
[0027] Example 1:
[0028] See appendix Figure 1 and attached Figure 2 As shown, this embodiment provides a fixture for finishing yttrium oxide ceramics, including: a disc base 2, which includes an upper surface for placing a ceramic product 1 and a lower surface for contacting a heating / cooling table, the upper and lower surfaces being arranged parallel to each other; a hot-melt wax layer 3 is disposed on the upper surface, the hot-melt wax layer 3 being located between the disc base 2 and the ceramic product 1; and a disc clamp 4, which is detachably disposed on the outside of the disc base 2. The disc clamp 4 is made of a ferromagnetic material.
[0029] See appendix Figure 2 and attached Figure 3As shown, the disc fixture 4 consists of several clamping blocks 41 with arc-shaped concave surfaces 411 on their inner sides. These concave surfaces 411 correspond to the outer surface structure of the disc base 2, and each clamping block 41 is evenly distributed around the disc base 2. The disc fixture 4, composed of several clamping blocks 41, facilitates production and processing, as well as disassembly and clamping. The number of clamping blocks 41 can be 3, 4, 5, or 6. The arc-shaped concave surfaces 411 on the inner side of the disc fixture 4 match those of the disc base 2, maximizing the contact area and clamping force. When placed on the rotary table grinding machine, the disc base 2 is clamped and fixed using multiple clamping blocks 41, and the disc fixture 4 is fixed and secured using a magnetic table surface.
[0030] See appendix Figure 3 As shown, the clamping block 41 has a stepped structure, and its cross-section 412 is L-shaped. The height of the side of the clamping block 41 closest to the disc base 2 is greater than the height of the side furthest from the disc base 2. Designing the clamping block 41 as an L-shaped stepped structure facilitates its placement and removal on the rotary table grinding machine. The higher side of the clamping block 41 is positioned closer to the disc base 2, ensuring sufficient contact area between the clamping block 41 and the outer surface of the disc base 2, guaranteeing stable clamping and improving positioning accuracy. The length of the cross-section 412 of the clamping block 41 is greater than its height, and the ratio of this length to height is 1.5:1 to 3:1. The ratio of the length to the height of the cross-section 412 of the clamping block 41 can be 1.5:1, 2:1, 2.5:1, or 3:1. Sufficient length relative to height allows the clamping block 41 to be placed more stably on the rotary table grinding machine, improving positioning accuracy. The height of clamping block 41 is greater than 4 / 5 of the thickness of the disc base 2, and the height of clamping block 41 is less than or equal to the thickness of the disc base 2. The height of clamping block 41 is close to or equal to the thickness of the disc base 2, so that the inner side of clamping block 41 has sufficient contact height with the side surface of disc base 2, which can better clamp the disc base 2 and make the clamping state more stable.
[0031] See appendix Figure 2 As shown, the circumferential distance between adjacent clamping blocks 41 is less than 1 / 4 of the circumference of the disc base 2. This avoids excessively large circumferential intervals between adjacent clamping blocks 41, ensuring stable clamping of the disc base 2 even when the disc clamp 4 is divided into multiple clamping blocks 41.
[0032] The parallelism between the upper and lower surfaces of the disc base 2 is <10μm. This reduces gaps or misalignments caused by parallelism deviations between the upper and lower surfaces, ensuring a tight fit when the ceramic product 1 is placed on the upper surface. It also prevents additional wear or vibration caused by uneven force on the disc base 2, ensuring the accuracy of subsequent processing and inspection. The disc base 2 is made of alumina ceramic. Alumina ceramic has high hardness and excellent wear resistance; it is also heat-resistant, making it suitable for use on heating platforms; and it can achieve nanoscale surface roughness through polishing, resulting in high precision.
[0033] Specifically, based on the dimensions of ceramic product 1, an alumina ceramic disc base 2 is designed to stably place ceramic product 1. Multiple specifications of disc base 2 can be designed to accommodate different dimensions of ceramic product 1. To ensure a flat contact surface, the parallelism between the upper and lower surfaces of the disc base 2 is <10μm. Before the finishing of ceramic product 1, a disc base 2 of appropriate size is selected according to the product dimensions. The disc base 2 and ceramic product 1 are heated to 70-90℃ using a heating table, which melts the hot-melt wax layer 3. When ceramic product 1 is placed on the disc base 2, the product can be repeatedly rotated to ensure a tight bond between ceramic product 1 and disc base 2. The ceramic product 1 and disc base 2 are cooled using a cooling table, causing the hot-melt wax to solidify and ensuring a seamless bond between ceramic product 1 and disc base 2. Place the disc base 2 with the ceramic product 1 installed on it onto the table of the rotary table grinder. Clamp and fix the disc base 2 with multiple clamping blocks 41. Fix the disc fixture 4 with the magnetic table surface. After clamping the disc base 2, start grinding.
[0034] A hot-melt wax layer 3 is applied to the disc base 2. The adhesive force of the hot-melt wax provides sufficient strength to fix the ceramic product 1, while also filling the irregular surface of the ceramic product 1 to ensure full fit during product processing. After processing, the wax layer formed after cooling can be quickly melted by a heating table to separate the ceramic workpiece, avoiding damage caused by ceramic mounting fixtures and mechanical disassembly. It also enables the flatness of the finished ceramic product 1 to meet high precision requirements.
[0035] Example 2:
[0036] See appendix Figure 1 and attached Figure 4 As shown, a detachable fixing seat 5 is provided on one side of the disc base 2, and a pressure plate 6 is connected to the fixing seat 5. The pressure plate 6 is located above the disc base 2. During cooling, the fixing seat 5 can be installed on one side of the disc base 2, so that the pressure plate 6 presses down on the ceramic product 1, making the ceramic product 1 and the disc base 2 fit tightly together during cooling, and making the parallelism between the grinding surface of the ceramic product 1 and the plane of the disc base 2 smaller.
[0037] See appendix Figure 1 and attached Figure 4As shown, the pressure plate 6 is mounted on the fixed base 5 in a vertically movable manner. Linear movement between the pressure plate 6 and the fixed base 5 can be achieved by setting up a corresponding power device and linear guide structure, which will not be elaborated here. The vertically movable pressure plate 6 makes operation more convenient when pressing down the ceramic product 1.
[0038] To prevent displacement of the ceramic product 1 and the disc base 2 during cooling, a pressure plate 6 is placed on the grinding surface of the ceramic product 1 to ensure that the ceramic product 1 and the disc base 2 are in close contact during cooling. This allows for a smaller degree of parallelism between the grinding surface of the ceramic product 1 and the plane of the disc base 2, and also ensures that the product is centered for easy grinding.
[0039] The jig for finishing yttrium oxide ceramics designed in this utility model can provide sufficient strength to fix the ceramic product 1 by utilizing the adhesive force of hot melt wax. At the same time, it can fill the irregular surface of the ceramic product 1, ensuring full fit during product processing. This avoids the breakage caused by directly clamping the ceramic product 1 with a traditional metal chuck, and also enables the flatness of the finished ceramic product 1 to meet high precision requirements.
[0040] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.
Claims
1. A fixture for finishing yttrium oxide ceramics, characterized in that, include: The disc base (2) includes an upper surface for placing the ceramic product (1) and a lower surface for contacting the heating / cooling table, the upper surface and the lower surface being arranged parallel to each other; the upper surface is provided with a hot melt wax layer (3), the hot melt wax layer (3) being located between the disc base (2) and the ceramic product (1); A disc clamp (4) is detachably mounted on the outside of the disc base (2).
2. The jig for finishing yttria ceramics according to claim 1, characterized by: The disc clamp (4) is composed of several clamping blocks (41) with arc-shaped concave surfaces (411) on their inner sides. The arc-shaped concave surfaces (411) are corresponding to the outer surface structure of the disc base (2). Each clamping block (41) is evenly distributed around the disc base (2).
3. The jig for finishing yttria ceramics according to claim 2, characterized by: The clamping block (41) has a stepped structure, and the cross-section (412) of the clamping block (41) is L-shaped. The height of the side of the clamping block (41) closer to the disc base (2) is greater than the height of the side away from the disc base (2).
4. The jig for finishing yttria ceramics according to claim 2, characterized by: The length of the cross section (412) of the clamping block (41) is greater than its height, and the ratio of the length to the height is 1.5:1 to 3:
1.
5. A jig for finishing yttrium oxide ceramics according to claim 2, characterized in that: The height of the clamping block (41) is greater than 4 / 5 of the thickness of the disc base (2), and the height of the clamping block (41) is less than or equal to the thickness of the disc base (2).
6. The jig for finishing yttrium oxide ceramics according to claim 2, characterized in that: The circumferential distance between adjacent clamping blocks (41) is less than 1 / 4 of the circumference of the disc base (2).
7. The jig for finishing yttrium oxide ceramics according to claim 1, characterized in that: The parallelism between the upper and lower surfaces of the disc base (2) is <10μm.
8. A jig for finishing yttrium oxide ceramics according to claim 1, characterized in that: The material of the disc base (2) is alumina ceramic.
9. A jig for finishing yttrium oxide ceramics according to claim 1, characterized in that: A detachable fixing seat (5) is provided on one side of the disc base (2), and a pressure plate (6) is connected to the fixing seat (5). The pressure plate (6) is located above the disc base (2).
10. A jig for finishing yttrium oxide ceramics according to claim 9, characterized in that: The pressure plate (6) is movable up and down on the fixed base (5).