Burning bearing jig for complex structural member

Abstract

The embodiment of the utility model discloses a burning bearing jig for a complex structural part. The burning bearing jig comprises a jig body, a fixing groove formed in the longitudinal direction of the jig body, positioning grooves formed in the two sides of the fixing groove at intervals, a receding groove formed in the center of the bottom of the fixing groove, and the front-back distance between the positioning grooves is 3 mm. According to the sintering jig for the complex structural part, the contact face between a product and the sintering jig in the sintering process can be reduced, friction between the product and the sintering jig can be reduced, the deformation amount of the product in the sintering shrinkage process is reduced to the minimum, product deformation caused by sintering is greatly reduced, the production cost is effectively reduced, and the production efficiency of the product is improved.

Description

Technical Field

[0001] This application relates to the field of powder injection molding, and more particularly to a casting fixture for complex structural parts. Background Technology

[0002] Electronic products have gradually become an indispensable part of people's daily lives, profoundly impacting their well-being. With the widespread adoption of Type-C interfaces, USB housing designs have become more unified and standardized. This interface supports reversible insertion, improving ease of use. New USB housing materials and designs not only improve connection stability but also enhance durability and protection levels, making USB connections more reliable and secure. USB housings have complex structures and require high dimensional precision; traditional processes can only use CNC machining, resulting in low production capacity and high costs. Using metal powder injection molding (MIM) can achieve high production capacity and low costs, significantly improving production efficiency. However, products manufactured using MIM are prone to irregular shapes during sintering, leading to difficulties in subsequent straightening. Utility Model Content

[0003] To address the existing technical problems, this application provides a firing fixture for complex structural components. The technical solution is as follows:

[0004] In a first aspect, a firing fixture for complex structural components is provided, comprising a fixture body, a fixing groove arranged longitudinally along the fixture body, positioning grooves arranged at intervals along both sides of the fixing groove, a clearance groove arranged at the center of the bottom of the fixing groove, and a front-to-back spacing of 3mm between the positioning grooves.

[0005] Furthermore, the clearance groove is 10.0±0.1mm wide and 0.05±0.1mm deep.

[0006] Furthermore, the fixing groove is 120mm long and 4.6±0.15mm wide.

[0007] Furthermore, the fixture body is provided with at least two rows of fixing grooves.

[0008] Furthermore, the distance between the two rows of fixing slots is 9.7 mm.

[0009] Furthermore, the left and right edges of the fixed groove spacing fixture body are 6.35mm.

[0010] Furthermore, the positioning groove is 3.5 mm deep and 4.6 ± 0.15 mm wide.

[0011] Furthermore, the positioning groove is 4.5mm from the front and rear edges of the fixture body.

[0012] Furthermore, the firing fixture is made of alumina ceramic.

[0013] The beneficial effects of the technical solution provided in this application are as follows: The sintering fixture for complex structural components of this application includes a fixture body, a fixing groove arranged longitudinally along the fixture body, positioning grooves arranged at intervals on both sides of the fixing groove, a clearance groove arranged in the center of the bottom of the fixing groove, and a front-to-back spacing of 3mm between the positioning grooves. The sintering fixture for complex structural components of this application can reduce the contact area between the product and the sintering fixture during the sintering process, reduce friction between the product and the sintering fixture, minimize the deformation of the product during sintering shrinkage, greatly reduce product deformation caused by sintering, effectively reduce production costs, and improve product production efficiency. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a structural diagram of the firing fixture provided in Embodiment 1 of this application;

[0016] Figure 2 This is a structural diagram of the firing fixture provided in Embodiment 1 of this application. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0018] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0019] In the following description, when referring to the accompanying drawings, the same numbers in different drawings denote the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0020] In the description of this application, it should be understood that the terms "first," "second," "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. In the description of this application, unless otherwise stated, "multiple" means two or more.

[0021] Example 1 Sintered Support Fixture

[0022] like Figure 1 and Figure 2 As shown, the firing fixture for complex structural components of this application includes a fixture body. In this embodiment, the fixture body is 120mm long and 100mm wide. A fixing groove 1 is provided along the longitudinal direction of the fixture body. The fixing groove 1 has the same length as the fixture body and a width of 14.55±0.15mm. The fixing groove 1 is 6.35mm away from the left and right edges of the fixture body.

[0023] Positioning grooves 3 are provided at intervals along both sides of the fixing groove 1. The positioning groove 3 is 4.5 mm from the front and rear edges of the fixture body, 3.5 mm deep, and 4.6 ± 0.15 mm wide, with a front-to-back distance of 3 mm between adjacent positioning grooves 3. In one embodiment, the fixture body has at least two rows of fixing grooves 1, with a distance of 9.7 mm between adjacent rows of fixing grooves 1, and adjacent fixing grooves 1 share one positioning groove 3. Figure 1 and 2 As shown, four rows of fixing slots can be set according to the actual width of the fixture body.

[0024] A clearance groove 2 is provided at the center of the bottom of the fixed groove 1. The clearance groove 2 is 10.0±0.1mm wide and 0.05±0.1mm deep.

[0025] The firing fixture for the complex structural components of this application can be made of alumina ceramic material with a heat resistance temperature >1100℃. The alumina ceramic includes Al2O3≥99%, SiO2≤0.20%, Na2O≤0.15%, Fe2O3≤0.10%, and MgO≤0.10%.

[0026] Products manufactured using metal powder injection molding need to be placed on a sintering fixture for sintering, but conventional fixtures have rough surfaces. For products with weak structures, this can easily lead to significant deformation after sintering, making subsequent reshaping and correction difficult.

[0027] When using the sintering fixture with the complex structure of this application, the sintered product is suspended in the fixing groove 1 through the positioning groove 3. The sintered product is perpendicular to the bottom surface of the fixture and has a certain gap with the bottom surface of the fixture through the clearance groove 2, i.e., it is in a suspended state. By setting the clearance groove 2, the contact area between the bottom surface of the sintered product and the bottom surface of the fixture can be reduced, thereby reducing the friction between the sintered product and the fixture. When the product shrinks during the sintering process, it can reduce the deformation of the sintered product, reduce the need for subsequent shaping, and effectively reduce production costs.

[0028] Currently, the design and use of USB housings are increasing. However, USB housing products have a thin structure and low strength, and as mentioned earlier, they are prone to deformation during sintering. Furthermore, USB housing products require high processing precision, and post-deformation processing is time-consuming and labor-intensive. Therefore, the sintering fixture of this application is particularly suitable for products like USB housings that require high precision but are easily deformed during the sintering process.

[0029] The sintering fixture for complex structural components disclosed in this application includes a fixture body, a fixing groove arranged longitudinally along the fixture body, positioning grooves spaced apart on both sides of the fixing groove, and a clearance groove at the center of the bottom of the fixing groove. The positioning grooves are spaced 3mm apart. This sintering fixture for complex structural components reduces the contact area between the product and the fixture during sintering, lowers friction between the product and the fixture, minimizes deformation during sintering shrinkage, significantly reduces product deformation caused by sintering, effectively lowers production costs, and improves production efficiency.

[0030] The above are merely preferred embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A complex structure part supporting jig, characterized by, The utility model provides a kind of ceramic supporting jig, including jig body, fixed slot is arranged longitudinally along the jig body, positioning slot is arranged along the fixed slot two sides interval, the bottom of the fixed slot is centrally arranged empty slot, the front and back distance of the positioning slot is 3mm.

2. The burn-in fixture for complex structures of claim 1, wherein, The empty slot is 10.0±0.1mm wide and 0.05±0.1mm deep.

3. The complex structure burn-in fixture of claim 1, wherein, The fixed slot is 120mm long and 4.6±0.15mm wide.

4. The burn-in fixture for complex structures of claim 1, wherein, At least two rows of fixed slots are arranged on the jig body.

5. The complex structure burn-in fixture of claim 4, wherein, The distance between the two rows of fixed slots is 9.7mm.

6. The burn-in fixture for complex structures of claim 1, wherein, The fixed slot is 6.35mm from the left and right edges of the jig body.

7. The complex structure burn-in fixture of claim 1, wherein, The positioning slot is 3.5mm deep and 4.6±0.15mm wide.

8. The complex structure burn-in fixture of claim 1, wherein, The positioning slot is 4.5mm from the front and back edges of the jig body.

9. The complex structure burn-in fixture of claim 1, wherein, The supporting jig is made of alumina ceramic.

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