Clamp for high-magnitude vibration impact of brittle flange-free product and design method thereof

Abstract

The invention discloses a clamp for high-magnitude vibration impact of a brittle flange-free product and a design method of the clamp. The clamp comprises a rectangular-box-shaped clamp box body, an avoiding arc is arranged at each inner corner of the clamp box body, a force equalizing base plate is arranged in the clamp box body, and a reinforcing rib cover plate is installed on the clamp box body in a matched mode; the inner end face of the reinforcing rib cover plate is provided with a pressing rib used for pressing the brittle flange-free product, and the pressing rib enables a gap to be reserved between the reinforcing rib cover plate and the clamp box body. According to the clamp for high-magnitude vibration impact of the fragile flange-free product, the avoiding arc and the force equalizing base plate are designed, so that the effect of dispersing stress is achieved, and the fragile flange-free product can be effectively prevented from being damaged due to excessive stress; the technical problem that in the prior art, brittle cracking occurs to a body or internal components due to the fact that a brittle non-flange product is subjected to high-magnitude vibration impact in the test installation process is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of electronic devices, relates to brittle materials, and particularly relates to a fixture for high-magnitude vibration and shock of brittle flange-less products and a design method thereof. Background Art

[0002] With the development of the structural technology of electronic products, the requirements for miniaturization and light weight of products are getting higher and higher. To reduce weight and size, a large number of products adopt technologies such as integration, three-dimensional packaging, and multi-layer ceramic substrates. Taking a certain type of brittle flange-less product as an example, as Figure 1 shown, the main structure of such products is made of silicon-aluminum alloy material, and a ceramic circuit board is welded inside. Capacitors, bonded magnetic cores, etc. are welded on the ceramic circuit board. The silicon-aluminum material has the advantages of low density and a thermal expansion coefficient (11 ppm / °C) close to that of the internal ceramic circuit board (7 ppm / °C). The power supply housing and the cover plate are welded together by laser sealing welding to achieve a sealing effect.

[0003] It can be seen that whether it is the silicon-aluminum main structure or the internal ceramic circuit, magnetic core or capacitor of the brittle flange-less product, they are all brittle materials. In addition to passing the sealing test, such products also have to experience various harsh environments such as acceleration, sine / random vibration, and temperature cycle. Experience shows that high-magnitude vibration and shock are extremely likely to cause brittle cracking of the product body or internal components. In addition, due to improper tooling design during the clamping process of the brittle flange-less product, problems such as product breakage and serious distortion of mechanical input will also occur. Summary of the Invention

[0004] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a fixture for high-magnitude vibration and shock of brittle flange-less products and a design method thereof, so as to solve the technical problem that the brittle flange-less products in the prior art have brittle cracking of the body or internal components during the test installation process or under high-magnitude vibration and shock.

[0005] To solve the above technical problems, the present invention is implemented by adopting the following technical solutions: A fixture for high-magnitude vibration and shock of brittle flange-less products includes a rectangular box-shaped fixture box body. Avoidance arcs are provided at each inner corner of the fixture box body. A force equalizing pad is arranged inside the fixture box body. A reinforcing rib cover plate is fitted and installed on the fixture box body. Pressing rib strips for pressing the brittle flange-less products are arranged on the inner end surface of the reinforcing rib cover plate, and a gap is left between the reinforcing rib cover plate and the fixture box body by the pressing rib strips.

[0006] The present invention also has the following technical features: The gap height between the reinforcing rib cover plate and the fixture box body is between 0.5 and 1 mm.

[0007] Chamfers are provided at the corners of the force equalizing pad.

[0008] On two adjacent side walls of the described fixture box body, three threaded holes are respectively opened, and fastening screws are installed in the threaded holes. The fastening screws are used to fasten the equalizing force backing plate.

[0009] On the described reinforcing rib cover plate and the described fixture box body, eight threaded holes are correspondingly opened, and the described reinforcing rib cover plate and the described fixture box body are connected by cover plate screws installed in the threaded holes.

[0010] The nominal diameters of the described cover plate screws and the fastening screws are equal.

[0011] The described fixture box body, the reinforcing rib cover plate and the equalizing force backing plate are all made of 2A12 aluminum alloy material.

[0012] A design method for a fixture for high-level vibration and impact of brittle flange-free products, the method specifically includes the following steps: Step 1, determine the brittle flange-free product and the pressure of the brittle flange-free product in the horizontal direction: Determine the mass of the brittle flange-free power supply, give the maximum bearing load of the brittle flange-free power supply in the horizontal direction, and obtain the pressure F1 of the brittle flange-free power supply in the horizontal direction; Step 2, determine the pre-tightening force of each fastening screw on one side wall of the fixture box body: According to the pressure F1 of the brittle flange-free power supply in the horizontal direction obtained in Step 1, know the pressure of each fastening screw on one side wall of the fixture box body, and round up the pressure increase allowance to obtain the pre-tightening force F2 of the fastening screw; Step 3, determine the torque of the fastening screw: Inversely deduce the torque T of the fastening screw according to the relationship between the torque and the pre-tightening force; Step 4, determine the pre-tightening force of each cover plate screw on the reinforcing rib cover plate: The torques of the described cover plate screws and the fastening screws are equal; according to the relationship between the torque and the pre-tightening force, the pre-tightening force of a single cover plate screw is F3; Step 5, modeling analysis: Determine the side wall pressure of the fixture box body as 3F2, and determine the pressure of the reinforcing rib cover plate as 8F3, and conduct simulation modeling analysis to respectively obtain the assembly stress analysis results of the fixture box body, the reinforcing rib cover plate and the brittle flange-free power supply; Step 6, conduct safety margin check: Conduct safety margin checks on the fixture box body and the reinforcing rib cover plate respectively; Step 7, mechanical fidelity performance analysis: Conduct mechanical fidelity performance analysis on the fixture after assembling the brittle flange-free power supply; Step 8, test stress analysis: Conduct a test stress analysis on the fixture after assembling the brittle flange power supply; Step Nine, slip analysis: Conduct a slip analysis on the fixture after assembling the brittle flange power supply. If the requirements are met, the design is completed.

[0013] Compared with the prior art, the present invention has the following technical effects: (I) The fixture design for high-level vibration and shock of brittle flange products proposed by the present invention has avoidance arcs and force equalizing pads, which can disperse the force and effectively prevent the brittle flange products from being damaged due to excessive force, solving the technical problem that the brittle flange products in the prior art are brittle cracked in the body or internal components during the test installation process or under high-level vibration and shock.

[0014] (II) The fixture for high-level vibration and shock of brittle flange products proposed by the present invention is applicable to the installation and transfer fixation of brittle flange products, can accommodate brittle flange products of different sizes, and has good positioning and limiting functions in the assembly and environmental test links of brittle flange power supplies.

[0015] (III) The fixture for high-level vibration and shock of brittle flange products proposed by the present invention has high-fidelity ability in vibration, shock, and constant acceleration tests.

[0016] (IV) The fixture for high-level vibration and shock of brittle flange products proposed by the present invention has strong versatility and can be quickly and smoothly applied to most current vibration and shock equipment. The design method of the whole set of fixtures for high-level vibration and shock of brittle flange products has a complete process, and the tooling design that meets the requirements can be completed and implemented with reference to the process. Description of the Drawings

[0017] Figure 1 It is a photo of the brittle flange power supply product.

[0018] Figure 2 It is a front view schematic diagram of the fixture for high-level vibration and shock of brittle flange products.

[0019] Figure 3 It is a structural schematic diagram of the fixture box body.

[0020] Figure 4 It is a structural schematic diagram of the stiffening rib cover plate.

[0021] Figure 5 It is an installation structural schematic diagram of the fastening screw and the cover plate screw.

[0022] Figure 6 It is a structural relationship schematic diagram of the force equalizing pad, the brittle flange product, the fastening screw, and the fixture box body.

[0023] Figure 7 It is a schematic diagram of the stress distribution of the fixture box body.

[0024] Figure 8 It is a schematic diagram of the stress distribution of the brittle non-flanged power supply.

[0025] Figure 9 It is a schematic diagram of the stress distribution of the reinforcing rib cover plate.

[0026] Figure 10 It is a schematic diagram of the deformation of the reinforcing rib cover plate.

[0027] Figure 11 It is a schematic diagram of the mechanical fidelity analysis of the fixture after assembling the brittle non-flanged power supply.

[0028] Figure 12 It is a schematic diagram of the stress distribution of the fixture after the test after assembling the brittle non-flanged power supply.

[0029] The meanings of each label in the figure are as follows: 1-fixture box body, 2-avoidance arc, 3-uniform force backing plate, 4-reinforcing rib cover plate, 5-clearance, 6-chamfer, 7-threaded hole, 8-fastening screw rod, 9-cover plate screw rod, 10-brittle non-flanged power supply, 11-compression rib.

[0030] The following further elaborates on the specific content of the present invention in conjunction with the accompanying drawings and embodiments. Specific Embodiments

[0031] It should be noted that all the devices and components in the present invention, unless otherwise specified, all adopt the devices and components known in the prior art.

[0032] The high level in the present invention means that the maximum bearing load of the brittle non-flanged product is not less than 1500 times the gravitational acceleration, and 1 gravitational acceleration is 9.8 m / s².

[0033] The main content of the present invention includes two aspects: mechanical structure design and mechanical design. Among them, the mechanical structure design mainly meets the basic constraint conditions related to geometric elements during the clamping of the brittle non-flanged product (such as: basic requirements such as product positioning, preventing edge interference, and preventing stress concentration); the mechanical design is responsible for completing the requirements of the strength of the brittle non-flanged product and the fixture during the clamping process of the brittle non-flanged product and subsequent test links, and the mechanical input fidelity of the brittle non-flanged product, that is, through mechanical theory or mechanical simulation, the quantification of structural and mechanical parameters is completed, and the specific geometric dimensions of the structure, structural modal parameters, strength margins, etc. are determined to ensure that the tooling meets the test requirements.

[0034] In accordance with the above technical solution, specific embodiments of the present invention are given below. It should be noted that the present invention is not limited to the following specific embodiments, and any equivalent transformation based on the technical solution of this application falls within the protection scope of the present invention.

[0035] Embodiment: This embodiment provides a fixture for high-magnitude vibration and impact of brittle flange-less products, including a fixture box body 1 in the shape of a rectangular box, as Figures 2 to 6 shown. At each inner corner of the fixture box body 1, an avoidance arc 2 is provided. An equalizing pressure plate 3 is arranged inside the fixture box body 1. A reinforcing rib cover plate 4 is fitted and installed on the fixture box body 1. On the inner end face of the reinforcing rib cover plate 4, there are pressing rib strips 11 for pressing the brittle flange-less products. The pressing rib strips 11 leave a gap 5 between the reinforcing rib cover plate 4 and the fixture box body 1.

[0036] Specifically in this embodiment, after the reinforcing rib cover plate 4 is fastened by the fastening screw rod 8, it deforms and sinks. To prevent the brittle flange-less products from not being pressed tightly after the periphery of the reinforcing rib cover plate 4 is in contact with the fixture box body 1, pressing rib strips 11 are designed on the inner side of the reinforcing rib cover plate 4 to achieve the pressing of the internal brittle flange-less products after the installation of the reinforcing rib cover plate 4. The protruding amount of the pressing rib strips 11 should be greater than the sinking deformation amount of the reinforcing rib cover plate 4 after fastening.

[0037] Specifically in this embodiment, the height of the gap 5 is between 0.5 and 1 mm. The gap 5 prevents the reinforcing rib cover plate 4 from being in contact with the fixture box body 1 after installation and sinking deformation, while at this time the internal brittle flange-less products are not pressed tightly.

[0038] As Figure 3 and Figure 6 shown, chamfers 6 are provided at the corners of the equalizing pressure plate 3.

[0039] Specifically in this embodiment, an equalizing pressure plate 3 is arranged inside the fixture box body 1. Chamfers 6 are provided at the corners of the equalizing pressure plate 3. The chamfers 6 avoid the avoidance arcs 2. The brittle flange-less products are in plane contact with the equalizing pressure plate 3, avoiding the interference phenomenon between the avoidance arcs 2 and the chamfers 6.

[0040] As Figure 5 and Figure 6 shown, three threaded holes 7 are opened on each of the two adjacent side walls of the fixture box body 1. Fastening screw rods 8 are installed in the threaded holes 7 for fastening the equalizing pressure plate 3.

[0041] As Figure 2 and Figure 5 shown, eight threaded holes 7 are correspondingly opened on the reinforcing rib cover plate 4 and the fixture box body 1. The reinforcing rib cover plate 4 and the fixture box body 1 are connected through the cover plate screw rods 9 installed in the threaded holes 7.

[0042] Specifically in this embodiment, asFigure 2 , Figure 5 and Figure 6 As shown in Figure 2 , Figure 5 and Figure 6 , installing the fastening screw rod 8 and the cover plate screw rod 9 in the threaded hole 7 makes the connection (to the external test bench interface) more convenient and rapid; the cooperation of the fixture box body 1, the fastening screw rod 8 and the equalizing force backing plate 3 can accommodate brittle flange-less products of different sizes, enabling the fixture box body 1 (either by itself or in cooperation with the structure of the equalizing force backing plate 3) to have the ability to hold brittle flange-less products of different sizes.

[0043] Specifically in this embodiment, in order to prevent the cover plate screw rod 9 and the fastening screw rod 8 from loosening under high-level vibration and impact of the brittle flange-less product and the fixture box body 1, in this embodiment, thread locking glue is used for thread locking of the cover plate screw rod 9 and the fastening screw rod 8 according to the specification requirements, which can ensure that the cover plate screw rod 9 and the fastening screw rod 8 do not loosen.

[0044] Specifically in this embodiment, after loading the brittle flange-less product into the fixture box body 1, the equalizing force backing plate 3 is arranged on the inner side wall of the fixture box body 1. After tightening with the fastening screw rod 8, the equalizing force backing plate 3, the brittle flange-less product and the fixture box body 1 are tightly fitted together; the reinforcing rib cover plate 4 and the fixture box body 1 are fixed to each other through the cover plate screw rod 9, jointly ensuring that there is no slipping phenomenon of the brittle flange-less product.

[0045] Specifically in this embodiment, the nominal diameters of the cover plate screw rod 9 and the fastening screw rod 8 are equal.

[0046] Preferably in this embodiment, the fixture box body 1, the reinforcing rib cover plate 4 and the equalizing force backing plate 3 are all made of 2A12 aluminum alloy material.

[0047] Specifically in this embodiment, a design method for a fixture for high-level vibration and impact of a brittle flange-less product includes the following steps: Step 1: Determine the brittle flange-less product and the pressure of the brittle flange-less product in the horizontal direction: Determine that the mass m of the brittle flange-less power supply 10 is 50 g, and apply a maximum load in the horizontal direction to the brittle flange-less power supply 10 (i.e., 1500 times the acceleration of gravity, 1 times the acceleration of gravity is 9.8 m / s²), to obtain the pressure F1 of the brittle flange-less power supply 10 in the horizontal direction.

[0048] F1 = m * a = (50 / 1000) * 1500 * 9.8 = 735 N; In the formula, F1 is the pressure received by the brittle flange-less power supply in the horizontal direction, with the unit of N; m is the mass of the brittle flange-less power supply, with the unit of kg; a is the maximum load, with the unit of m / s².

[0049] Step 2: Determine the pre-tightening force of each fastening screw rod on one side wall of the fixture box body: According to the pressure F1 exerted on the brittle flange-less power supply 10 in the horizontal direction in Step 1, it can be known that the pressure on each fastening screw 8 on one side wall of the fixture box body 1 is 245 N. The pre-tightening force F2 of the fastening screw 8 is obtained by rounding up the pressure increase reserve, and F2 = 300 N.

[0050] Step 3: Determine the torque of the fastening screw: The torque T of the fastening screw 8 is inversely deduced according to the relationship between torque and pre-tightening force. F2 = (T * K) / d, and by inverse deduction, T = (F2 * d) / K; In the formula, F2 is the pre-tightening force of the fastening screw, with the unit of N; T is the torque, with the unit of N·m; K is a coefficient, which is taken as 0.2 here; d is the nominal diameter, with the unit of m, which is 0.003 m here; By inverse deduction, the torque T of the fastening screw 8 is 4.5 N·m.

[0051] Step 4: Determine the pre-tightening force of each cover screw on the reinforcing rib cover: The torques of the cover screw 9 and the fastening screw 8 are equal. According to the relationship between torque and pre-tightening force: F2 = (T * K) / d, the pre-tightening force of a single cover screw 9 is F3, and F3 = 300 N.

[0052] Step 5: Modeling analysis: Specifically in this embodiment, the assembly stress analysis is respectively carried out on the brittle flange-less power supply 10, the fixture box body 1 and the reinforcing rib cover 4. A unilateral pressing force is given to the brittle flange-less power supply 10 and analyzed. This step needs to be analyzed and verified according to variables such as the size and material strength of the brittle flange-less power supply 10 and the materials and strengths of the fixture box body 1 and the reinforcing rib cover 4. After repeated iteration according to the analysis results, it is confirmed, and finally the side wall pressure is determined.

[0053] The side wall pressure of the fixture box body 1 is determined to be 3F2 = 900 N, and the pressure of the reinforcing rib cover 4 is determined to be 8F3 = 2400 N. The Ansys Workbench software is used for simulation modeling analysis to obtain the assembly stress analysis results of the fixture box body 1, the reinforcing rib cover 4 and the brittle flange-less power supply 10 respectively.

[0054] As Figure 7 shown, the assembly stress of the fixture box body 1 is 8.8 MPa; as Figure 8 shown, the assembly stress of the brittle flange-less power supply 10 is 18.36 MPa; as Figure 9 shown, the assembly stress of the reinforcing rib cover 4 is 100 MPa.

[0055] As Figure 10As shown, after applying pressure to the cover plate screw 9, the downward bending deformation of the reinforcing rib cover plate 4 is 0.03 mm, which does not exceed the height value of the gap 5. Therefore, the internal brittle flange-less power supply 10 is pressed tightly.

[0056] Step six, conduct safety margin verification: Conduct safety margin verification on the fixture box body 1 and the reinforcing rib cover plate 4. According to the safety margin = allowable strength of the material / (stress of the material during loading * safety factor) - 1, the requirements for the safety factor are different in different industries. In this embodiment, the safety factor is taken as 1.2. If the safety margin > 0, it meets the requirements.

[0057] In the above analysis results, the allowable strength of the material of the reinforcing rib cover plate 4 (2A12 aluminum alloy) is the yield strength of 275 MPa, and the stress of the material during loading is 100 MPa. Then the safety margin = 275 / (100 * 1.2) - 1 = 1.29 > 0, which meets the requirements.

[0058] In the above analysis results, the allowable strength of the material of the fixture box body 1 (2A12) aluminum alloy is the yield strength of 275 MPa, and the stress of the material during loading is 8.8 MPa. Then the safety margin = 275 / (8.8 * 1.2) - 1 = 25.04 > 0, which meets the requirements.

[0059] Therefore, both the fixture box body 1 and the reinforcing rib cover plate 4 have a large safety margin.

[0060] Step seven, mechanical fidelity performance analysis: Conduct mechanical fidelity performance analysis on the fixture after assembling the brittle flange-less power supply 10.

[0061] Specifically in this embodiment, assemble the brittle flange-less power supply 10 into the fixture box body 1, cover the reinforcing rib cover plate 4, and fix it with the cover plate screw 9 and the fastening screw 8. Conduct mechanical fidelity performance analysis on the fixture after assembling the brittle flange-less power supply 10. In the test requirements such as random vibration, sine vibration, and constant acceleration, the highest frequency of the test is 2000 Hz. However, in the above test, a larger overall assembly structure of the external transfer tooling is adopted, such as Figure 11 As shown, conduct modal analysis on the overall assembly structure. The structural frequency of the overall assembly structure is 3266 Hz. Compared with the highest frequency of the test, 2000 Hz, 3266 / 2000 = 1.63, and the ratio of the two is greater than the criterion value of 1.4 for avoiding resonance coupling. According to mechanical theory, in the above test, the brittle flange-less power supply 10 can meet the test requirements such as random vibration, sine vibration, and constant acceleration without mechanical amplification and distortion.

[0062] Step eight, test stress analysis: Specifically in this embodiment, conduct test stress analysis on the fixture after assembling the brittle flange-less power supply 10. As Figure 12As shown, the maximum stress distribution under vibration and shock conditions is given. From Figure 12 it can be seen that the maximum stress of the stiffening rib cover plate 4 after the brittle flange power supply 10 is assembled into the fixture box body 1 is 85 MPa. After superimposing the assembly stress of 100 MPa, according to the safety margin = allowable strength of the material / (stress of the material during loading * safety factor) - 1, the stress of the material during loading is 185 MPa, then the safety margin = 275 / (185 * 1.2) - 1 = 0.24 > 0, indicating that the safety margin of the stiffening rib cover plate 4 still meets the requirements and there is a certain safety margin, which can meet the strength requirements.

[0063] Step Nine, slip analysis: Perform a slip analysis on the fixture after the brittle flange power supply 10 is assembled. Since the entire assembly structure is a slightly interference fit and the analysis shows that adjacent components do not separate during the test, the brittle flange power supply 10 does not exhibit slip phenomena in a dynamic environment, meeting the requirements and completing the design.

Claims

1. A clamp for high-level vibration and impact of brittle flangeless products, comprising a rectangular box-shaped clamp body (1), characterized in that: An avoidance arc (2) is provided at each inner corner of the clamp box body (1), a force equalizing pad (3) is provided inside the clamp box body (1), a reinforcing rib cover plate (4) is installed on the clamp box body (1), and the inner end surface of the reinforcing rib cover plate (4) is provided with a compression rib (11) for compressing the brittle flangeless product, and the compression rib (11) leaves a gap (5) between the reinforcing rib cover plate (4) and the clamp box body (1).

2. The fixture for high-level vibration and impact of brittle flangeless products as claimed in claim 1, characterized in that: The height of the gap (5) is between 0.5 and 1 mm.

3. The fixture for high-level vibration and impact of brittle flangeless products according to claim 1, characterized in that: Chamfers (6) are provided at the corners of the force equalizing pad (3).

4. The fixture for high-level vibration and impact of brittle flangeless products according to claim 1, characterized in that: Three threaded holes (7) are respectively provided on two adjacent side walls of the clamp box body (1), and fastening screws (8) are installed in the threaded holes (7). The fastening screws (8) are used to fasten the force equalizing pad (3).

5. The fixture for high-level vibration and impact of brittle flangeless products as claimed in claim 4, characterized in that: The reinforcing rib cover plate (4) and the clamp box body (1) are provided with eight threaded holes (7) correspondingly, and the reinforcing rib cover plate (4) and the clamp box body (1) are connected by cover plate screws (9) installed in the threaded holes (7).

6. The fixture for high-level vibration and impact of brittle flangeless products as claimed in claim 5, characterized in that: The nominal diameters of the cover screw (9) and the fastening screw (8) are equal.

7. The fixture for high-level vibration and impact of brittle flangeless products according to claim 1, characterized in that: The clamp box body (1), the reinforcing rib cover plate (4) and the force equalizing pad (3) are all made of 2A12 aluminum alloy material.

8. A method for designing a fixture for high-level vibration and impact of brittle flangeless products, the method adopts the design of the fixture for high-level vibration and impact of brittle flangeless products as claimed in claim 6, and the method specifically comprises the following steps: Step 1: Determine the horizontal pressure of brittle flangeless products and brittle flangeless products: Determine the mass of the brittle flangeless power supply (10), give the brittle flangeless power supply (10) a maximum load in the horizontal direction, and obtain a pressure value F1 of the brittle flangeless power supply (10) in the horizontal direction; It is characterized in that Step 2: Determine the preload force of each fastening screw on the side wall of the fixture box: According to the pressure F1 in the horizontal direction of the brittle flangeless power supply (10) in step 1, the pressure of each fastening screw (8) on the side wall of one side of the clamp box body (1) can be known, and the pre-tightening force F2 of the fastening screw (8) is obtained by rounding the pressure increase margin; Step 3: Determine the torque for tightening the screw: According to the relationship between torque and preload, the torque T of the tightening screw (8) can be inferred in reverse order; Step 4: Determine the preload force of each cover screw on the rib cover: The torques of the cover screw (9) and the fastening screw (8) are equal; according to the relationship between torque and preload force, the preload force of a single cover screw (9) is F3; Step 5: Modeling and analysis: The side wall pressure of the fixture box body (1) is determined to be 3F2, and the pressure of the reinforcing rib cover plate (4) is determined to be 8F3. Simulation modeling analysis is performed to obtain assembly stress analysis results of the fixture box body (1), the reinforcing rib cover plate (4) and the brittle flangeless power supply (10). Step 6: Check the safety margin: Performing safety margin checks on the fixture box body (1) and the reinforcing rib cover plate (4) respectively; Step 7: Mechanical fidelity performance analysis: Conducting mechanical fidelity performance analysis on the fixture after assembling the brittle flangeless power supply (10); Step 8: Experimental stress analysis: Conducting a test stress analysis on the fixture after assembling the brittle flangeless power supply (10); Step 9: Slip analysis: The slip analysis of the fixture after assembling the brittle flangeless power supply (10) is carried out, and the requirements are met, thus completing the design.

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