Optimized layout evaluation device and method for board card screw holes

Abstract

The application relates to the technical field of board card layout evaluation, and discloses an optimization layout evaluation device and an evaluation method for board card screw holes, which comprise a base; a clamping module is connected to the base; a supporting module comprises a plurality of supporting pieces, the supporting pieces are movably arranged on the base, and the plurality of supporting pieces are used for supporting different positions of a board card; a pressing force applying module is connected to the base and comprises a pressing support and a plurality of pressing mechanisms, the plurality of pressing mechanisms are movably connected to the pressing support and are located above a board card to be evaluated, and are used for applying pressing forces to different positions of the board card; a displacement detecting module comprises a plurality of detecting pieces, the plurality of detecting pieces are movably arranged on the base and are located between the base and the board card, and are used for detecting deformation displacements of different positions of the board card; and a controller is in communication connection with the pressing mechanisms and the detecting pieces. The optimization layout evaluation device for the board card screw holes can evaluate the screw holes preset at different positions.

Description

Technical Field

[0001] This invention relates to the field of circuit board layout evaluation technology, specifically to an evaluation device and method for optimizing the layout of circuit board screw holes. Background Technology

[0002] With the development of information technology, electronic products are widely used in various industries. Servers, as infrastructure, have made significant progress in data storage, information exchange, intelligent computing, and many other fields. The motherboard, as the core component of a server, is the main circuit system part of the server, providing important support for the server's logical operations, storage, expansion functions, and management.

[0003] Motherboards are typically connected to servers via screw holes and screws. During the motherboard assembly process, connector insertion may cause the motherboard to deform; vibrations during transportation may also cause the motherboard to deform. Therefore, the location and number of screw holes on the motherboard play an important role in the motherboard's fixing strength and reliability.

[0004] Traditional motherboard deformation testing requires the creation of motherboards with different screw hole positions, which increases the cost of motherboard samples and extends the production time. Summary of the Invention

[0005] In view of this, the present invention provides an evaluation device and method for optimizing the layout of board screw holes, so as to solve the problem that deformation testing leads to increased cost and long production cycle of board samples.

[0006] In a first aspect, the present invention provides an evaluation device for optimizing the layout of screw holes on a circuit board, comprising:

[0007] Base;

[0008] A clamping module, connected to the base, is used to clamp the side of the board to be evaluated;

[0009] The support module includes multiple support members, which are movably mounted on the base, and the multiple support members are used to support different positions of the board.

[0010] A pressing force application module is connected to the base. The pressing force application module includes a pressing bracket and multiple pressing mechanisms. The multiple pressing mechanisms are movably connected to the pressing bracket and located above the board to be evaluated, for applying pressing force to different positions of the board.

[0011] The displacement detection module includes multiple detectors, which are movably disposed on the base and located between the base and the board, for detecting the deformation displacement at different positions of the board;

[0012] The controller is communicatively connected to both the pressing mechanism and the probe.

[0013] Beneficial effects: The clamping module can clamp the side of the board to be evaluated, positioning and fixing the board above the base, forming a gap between the board and the top of the base; the support module can set the position and number of support members according to the preset position and number of screw holes on the board to be evaluated, and set them between the board to be evaluated and the base to support the preset screw holes on the board to be evaluated; the pressing force application module can preset the pressing position, the number of pressing mechanisms, and the magnitude of the pressing force according to the layout and model of the connectors on the board to be evaluated, and perform a pressing test on the board to be evaluated from above according to the above preset information; during the test, the displacement detection module can detect the deformation displacement at the position with the larger estimated deformation, and the controller outputs a form based on the pressing information of the pressing mechanism and the deformation displacement information of the detection member; after each measurement, the position and number of support members can be changed and the measurement can be repeated to output a form. The controller then compares the deformation displacement in multiple forms and selects the number and position of support members corresponding to the smaller deformation displacement as the optimal number and position of screw holes. The circuit board screw hole optimization layout evaluation device is equipped with movable support and probe components. It can evaluate screw holes at different preset positions according to the moving position or changing number of the circuit board to be evaluated. It eliminates the need to make circuit board samples with different screw hole positions for deformation testing, thereby reducing the cost of circuit board samples and shortening the production cycle.

[0014] In one optional embodiment, the support is an electromagnetic support block, which can be magnetically attached to the base after being energized, and the electromagnetic support block is communicatively connected to the controller.

[0015] Beneficial effects: The electromagnetic support block can be magnetically attached to the base after being powered on, and can be moved on the base as needed after the power is turned off. The structure is simple and the control method is also simple, making it easy to adjust the position and number of the support components as needed during testing.

[0016] In one alternative embodiment, the board has pre-drilled screw holes, and the top of the electromagnetic support block covers the screw holes on the board.

[0017] In one optional embodiment, the detector includes an electromagnetic part and a detection part. The electromagnetic part can be magnetically attached to the base after being energized, and the detection part is connected to the top of the electromagnetic part for detecting deformation displacement. Both the electromagnetic part and the detection part are communicatively connected to the controller.

[0018] Beneficial effects: The electromagnetic part can be magnetically attached to the base after being powered on, and can be moved on the base as needed after the power is turned off, so as to move the detection part. The structure is simple and the control method is also simple, making it easy to adjust the position and number of the detection elements as needed during the test.

[0019] In one alternative embodiment, the pressing bracket includes:

[0020] Two support bodies are respectively connected to both sides of the base along a first direction; the clamping module, the support module, and the displacement detection module are all located between the two support bodies;

[0021] The first slide rail is located at the top of the support body and extends along the second direction;

[0022] The second slide is slidably connected at both ends to the two first slides respectively, and the pressing mechanism is slidably connected to the second slide along the first direction;

[0023] Wherein, the first direction is perpendicular to the second direction, and there are at least two second slides, which are distributed along the second direction.

[0024] Beneficial effects: The two support bodies can support the first slide rail at a certain height on the top of the base to support the pressing mechanism above the plate; the two ends of the second slide rail are slidably connected to the two first slide rails respectively, and the position of the first slide rail can be slidable in the second direction to realize the position adjustment of the pressing mechanism in the second direction; the pressing mechanism is slidably connected to the second slide rail in the first direction, and the position of the pressing mechanism in the first direction can be adjusted respectively through the sliding cooperation of the first slide rail and the second slide rail, as well as the sliding cooperation of the pressing mechanism and the second slide rail, to adapt to different test requirements.

[0025] In one optional embodiment, the bottom ends of the second slide are respectively provided with first grooves, and the second slide slide slides in cooperation with the first slide through the first grooves. The first groove is a dovetail groove, and the shape of the first slide matches the shape of the first groove.

[0026] In one optional implementation, the pressing mechanism includes:

[0027] The first slider is provided with a sliding hole, and the first slider is slidably sleeved on the outer periphery of the second slide rail through the sliding hole;

[0028] The force-applying rod is connected to the bottom of the first slider and is communicatively connected to the controller.

[0029] In one alternative implementation, the force-applying rod is a hydraulic force-applying rod.

[0030] In one optional embodiment, the sliding hole includes a first hole segment, a second hole segment, and a third hole segment arranged sequentially. The first hole segment has a wedge-shaped cross-section, the third hole segment has a rectangular cross-section, and the width of the second hole segment is smaller than the widths of the first hole segment and the third hole segment. The shape of the main body of the second slide rail matches the shape of the sliding hole.

[0031] In one optional implementation, the clamping module includes:

[0032] The third slide rail protrudes from the top of the base and extends along the first direction, and the third slide rail has two sides distributed along the second direction on both sides of the base.

[0033] The fourth slide rail is slidably connected to the two third slide rails at both ends; the fourth slide rail has two sections spaced apart along the first direction, and the plate, the support module and the displacement detection module are all disposed between the two fourth slide rails;

[0034] The second slider has a second groove at its bottom, and the second slider is slidably connected to the fourth slide rail through the second groove;

[0035] A support plate has one end fixedly connected to the top of the second slider, and the other end extends toward the plate to form a suspended support end; the support plate is provided with threaded holes.

[0036] A clamping plate is disposed on the top of the support plate, and the clamping plate is provided with a through hole;

[0037] The fastener has an adjustment cap at one end and is threaded through the through hole and threaded to the threaded hole at the other end. The clamping plate and the support end form a clamping space, which is used to clamp the plate.

[0038] Each of the fourth slides is connected to at least one second slider, and the clamping spaces on the two fourth slides are respectively used to clamp the two sides of the board.

[0039] The third slide has two sections, providing good sliding support to both ends of the fourth slide. The fourth slide is slidably connected to the third slide, allowing the support plate, clamping plate, and fasteners to move along the first direction with the fourth slide for position adjustment in that direction. The second slider slides with the fourth slide, allowing the support plate, clamping plate, and fasteners to move along the second direction with the second slider for position adjustment in that direction. The support end of the support plate supports the bottom of the board to be evaluated. The clamping plate is detachably connected to the support plate via fasteners, forming a clamping space between the clamping plate and the support plate. This space positions and fixes the board to be evaluated from both the top and bottom, while also facilitating disassembly and installation for replacement. Furthermore, the fasteners are threaded into threaded holes, allowing for adjustment of the clamping space height to accommodate boards of different thicknesses. The combination of the third slide, fourth slide, second slider, support plate, clamping plate, and fasteners allows for clamping boards of different thicknesses and sizes in both the first and second directions, offering strong applicability.

[0040] In one optional embodiment, the clamping module further includes a first positioning component, which includes a first positioning plate and a first positioning post. One end of the first positioning plate is fixedly connected to the fourth slide rail, and the other end is provided with a first positioning hole. The first positioning post is threadedly connected to the first positioning hole and is used to abut against the third slide rail for positioning.

[0041] In one optional embodiment, the clamping module further includes a second positioning component, which includes a second positioning plate and a second positioning post. One end of the second positioning plate is fixedly connected to the second slider, and the other end is provided with a second positioning hole. The second positioning post is threadedly connected to the second positioning hole and is used to abut against the fourth slide rail.

[0042] In one alternative embodiment, the third slide has a wedge-shaped cross-section, and the bottom of the fourth slide has a third groove, the shape of which matches the shape of the third slide.

[0043] In one alternative embodiment, the second groove is a dovetail groove, and the top of the fourth slide is provided with a slide bar, the shape of which matches the shape of the dovetail groove.

[0044] Secondly, the present invention also provides an evaluation method for the above-mentioned optimized layout evaluation device for board screw holes, comprising:

[0045] The first preset position and the first preset number of clamping modules are preset according to the size of the board to be evaluated;

[0046] The second preset number and second preset position of screw holes are preset according to the size of the board to be evaluated;

[0047] Based on the second preset quantity and the second preset position, determine the third preset quantity and the third preset position of the support members, and move the third preset quantity of support members to the corresponding third preset position;

[0048] Based on the layout of the connectors on the board to be evaluated, a preset deformation position with a large deformation on the board to be evaluated is preset, and the probe is moved to the preset deformation position.

[0049] The board to be evaluated is clamped by the clamping module at the first preset position;

[0050] Based on the layout and model of the connectors on the board to be evaluated, a fourth preset number and a fourth preset position of the pressing mechanism are preset, and the fourth preset number of pressing mechanisms are moved to the corresponding fourth preset position, and the pressing force is preset.

[0051] The pressing mechanism is activated to press down, the probe acquires the deformation displacement, and outputs a form;

[0052] Fine-tune the third preset position of the support component, or add a rubber pad under the board for support, record the third preset position after fine-tuning, start the pressing mechanism again to press, the probe obtains the deformation displacement, and outputs a form;

[0053] The third preset position of the support component is finely adjusted multiple times, or rubber pads are added at different positions under the board for support. After pressing the pressing mechanism multiple times, multiple forms are output. The deformation displacement in the multiple forms is compared, and the third preset position and number of the support component corresponding to the smaller deformation displacement are selected as the optimal position and number of screw holes.

[0054] Thirdly, the present invention also provides an evaluation method for the above-mentioned optimized layout evaluation device for board screw holes, comprising:

[0055] The first preset position and the first preset number of clamping modules are preset according to the size of the board to be evaluated;

[0056] The second preset number and second preset position of screw holes are preset according to the size of the board to be evaluated;

[0057] Based on the second preset quantity and the second preset position, determine the third preset quantity and the third preset position of the support members, and move the third preset quantity of support members to the corresponding third preset position;

[0058] Based on the layout of the connectors on the board to be evaluated, a preset deformation position with a large deformation on the board to be evaluated is preset, and the probe is moved to the preset deformation position.

[0059] The board to be evaluated is clamped by the clamping module at the first preset position;

[0060] Fix the base to the impact table and perform an impact test with the bottom facing down. During the test, the probe records the amount of sinking deformation displacement of the board to be evaluated and outputs the deformation curve.

[0061] Fine-tune the third preset position of the support component, or add a rubber pad under the board for support, record the third preset position after fine-tuning, conduct impact test and collect the amount of sinking deformation displacement again, and output the deformation curve.

[0062] After repeatedly fine-tuning the third preset position of the support component, or adding rubber pads at different positions under the board for support, and after conducting multiple impact tests and collecting the amount of sinking deformation displacement, multiple deformation curves are output. By comparing the maximum amount of sinking deformation displacement among the multiple deformation curves, the third preset position and third preset number of the support component corresponding to the smaller amount of deformation displacement are selected as the optimal position and number of screw holes. Attached Figure Description

[0063] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of the present invention, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0064] Figure 1 This is a schematic diagram of an optimized layout evaluation device for board screw holes according to an embodiment of the present invention;

[0065] Figure 2 This is a partial schematic diagram of an optimization layout evaluation device for board screw holes according to an embodiment of the present invention;

[0066] Figure 3 This is a partial schematic diagram of the clamping module according to an embodiment of the present invention;

[0067] Figure 4 This is a schematic diagram of the layout of the support and probe of an optimization layout evaluation device for board screw holes according to an embodiment of the present invention;

[0068] Figure 5 This is a schematic diagram of the pressing force application module according to an embodiment of the present invention;

[0069] Figure 6 This is a schematic diagram of the pressing mechanism according to an embodiment of the present invention;

[0070] Figure 7 This is a flowchart of an evaluation method for an evaluation device for optimizing the layout of screw holes on a circuit board, according to an embodiment of the present invention.

[0071] Figure 8 This is a flowchart illustrating another evaluation method for an evaluation device for optimizing the layout of screw holes on a circuit board, as described in an embodiment of the present invention.

[0072] Explanation of reference numerals in the attached figures:

[0073] 1. Base; 2. Clamping module; 21. Third slide rail; 22. Fourth slide rail; 23. Second slider; 24. Support plate; 25. Clamping plate; 26. Fastener; 27. First positioning component; 28. Second positioning component; 3. Support component; 4. Pressing force application module; 41. Pressing bracket; 411. Bracket body; 412. First slide rail; 413. Second slide rail; 42. Pressing mechanism; 421. First slider; 4211. First hole section; 4212. Second hole section; 4213. Third hole section; 422. Force rod; 5. Detector; 100. Board. Detailed Implementation

[0074] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0075] The following is combined Figures 1 to 8 The following describes embodiments of the present invention.

[0076] According to an embodiment of the present invention, in one aspect, an optimized layout evaluation device for screw holes of a board 100 is provided, such as... Figures 1 to 6 As shown, the system includes a base 1, a clamping module 2, a support module, a pressing force application module 4, a displacement detection module, and a controller. The clamping module 2 is connected to the base 1 and is used to clamp the side of the board 100 to be evaluated. The support module includes multiple support members 3, which are movably mounted on the base 1 and are used to support different positions of the board 100. The pressing force application module 4 is connected to the base 1 and includes a pressing bracket 41 and multiple pressing mechanisms 42. The multiple pressing mechanisms 42 are movably connected to the pressing bracket 41 and are located above the board 100 to be evaluated, and are used to apply pressing force to different positions of the board 100. The displacement detection module includes multiple detectors 5, which are movably mounted on the base 1 and located between the base 1 and the board 100, and are used to detect the deformation displacement of the board 100 at different positions. The controller is communicatively connected to the pressing mechanism 42 and the detectors 5.

[0077] The clamping module 2 can clamp the side of the board 100 to be evaluated, positioning and fixing the board 100 above the base 1, and forming a gap between the board 1 and the top of the base 1; the support module can set the position and number of support members 3 according to the preset position and number of screw holes on the board 100 to be evaluated, and set them between the board 100 to be evaluated and the base 1 to support the preset screw holes on the board 100 to be evaluated; the pressing force application module 4 can preset the pressing position, the number of pressing mechanisms 42, and the pressing force according to the layout and model of the connectors on the board 100 to be evaluated. The force applied is determined based on the preset information, and a pressing test is performed on the board 100 to be evaluated from above. During the test, the displacement detection module can detect the deformation displacement at the location with the largest estimated deformation. The controller outputs a form based on the pressing information of the pressing mechanism 42 and the deformation displacement information of the detector 5. After each measurement, the position and number of the support 3 can be changed to measure again and output a form. The controller then compares and judges the deformation displacement in multiple forms, and selects the number and position of the support 3 corresponding to the smaller deformation displacement as the optimal number and position of screw holes. Because the board 100 screw hole optimization layout evaluation device is equipped with movable support 3 and detector 5, the position or number of the board 100 to be evaluated can be moved or changed to evaluate screw holes at different preset positions. There is no need to make board 100 samples with different screw hole positions for deformation testing, which reduces the cost of board 100 samples and shortens the production cycle.

[0078] Specifically, the board 100 to be evaluated can be a motherboard or a circuit board, etc. Specifically, the board 100 to be evaluated can be the motherboard of a server, computer, or other electronic device. Communication connections include electrical connections via wires, as well as network connections via WIFI, 5G, or Bluetooth, etc.

[0079] In one embodiment, the support 3 is an electromagnetic support block, which can be magnetically attached to the base 1 after being energized, and the electromagnetic support block is communicatively connected to the controller.

[0080] The electromagnetic support block can be magnetically attached to the base 1 after being powered on, and can be moved on the base 1 as needed after the power is turned off. The structure is simple and the control method is also simple, making it easy to adjust the position and number of support components 3 as needed during testing.

[0081] Specifically, the support member 3 includes an electromagnetic column and a support protrusion. The support protrusion is connected to the top of the electromagnetic column, and the cross-sectional area of ​​the support protrusion is smaller than that of the electromagnetic column.

[0082] In one embodiment, the board 100 has pre-set screw holes, and the top of the electromagnetic support block covers the screw holes in the projected area on the board 100.

[0083] When the board 100 to be evaluated already has pre-set screw holes, the top of the electromagnetic support block should cover the screw holes to provide better support for the board 100 and prevent the electromagnetic support block from being inserted into the screw holes and affecting the evaluation results.

[0084] In one embodiment, the detector 5 includes an electromagnetic part and a detector part. The electromagnetic part can be magnetically attached to the base 1 after being energized, and the detector part is connected to the top of the electromagnetic part for detecting deformation displacement. Both the electromagnetic part and the detector part are communicatively connected to the controller.

[0085] The electromagnetic part can be magnetically attached to the base 1 after being powered on, and can be moved on the base 1 as needed after the power is turned off, so as to drive the detection part to move. The structure is simple and the control method is also simple, which makes it easy to adjust the position and number of the detection element 5 as needed during the test.

[0086] As an alternative implementation, the top array of the base 1 may be provided with multiple support holes, and the detector 5 may include a support column and a detector part. The support column is connected to the bottom of the detector part and is detachably inserted into the support hole so as to facilitate the movement of the position of the detector 5; the detector part is used to detect deformation displacement.

[0087] In one embodiment, the pressing bracket 41 includes two bracket bodies 411, a first slide rail 412, and a second slide rail 413; the two bracket bodies 411 are respectively connected to both sides of the base 1 along a first direction; the clamping module 2, the support module, and the displacement detection module are all located between the two bracket bodies 411; the first slide rail 412 is disposed on the top of the bracket body 411 and extends along a second direction; the two ends of the second slide rail 413 are respectively slidably connected to the two first slide rails 412, and the pressing mechanism 42 is slidably connected to the second slide rail 413 along the first direction; wherein, the first direction is perpendicular to the second direction, and there are at least two second slide rails 413, which are distributed along the second direction.

[0088] Two support bodies 411 can support the first slide rail 412 at a certain height on the top of the base 1 to support the pressing mechanism 42 above the board 100; the two ends of the second slide rail 413 are slidably connected to the two first slide rails 412 respectively, and the position of the first slide rail 412 can be slidable along the second direction to realize the position adjustment of the pressing mechanism 42 in the second direction; the pressing mechanism 42 is slidably connected to the second slide rail 413 along the first direction, and the position adjustment of the pressing mechanism 42 in the first direction can be realized; through the sliding cooperation of the first slide rail 412 and the second slide rail 413, and the sliding cooperation of the pressing mechanism 42 and the second slide rail 413, the position of the pressing mechanism 42 can be adjusted in the first direction and the second direction respectively to adapt to different test requirements and apply pressing force to different positions of the board 100 to be evaluated.

[0089] In one embodiment, the bottom ends of the second slide rail 413 are respectively provided with first slide grooves, and the second slide rail 413 slides in cooperation with the first slide rail 412 through the first slide grooves. The first slide groove is a dovetail groove, and the shape of the first slide rail 412 matches the shape of the first slide groove.

[0090] The dovetail groove prevents the second slide rail 413 from tilting or shaking when it is fixed or during sliding, ensuring smooth sliding.

[0091] Specifically, the first slide rail 412 has a long strip structure, and the second slide rail 413 can be easily disassembled and installed through both ends of the first slide rail 412.

[0092] In one embodiment, the pressing mechanism 42 includes a first slider 421 and a force rod 422; the first slider 421 is provided with a sliding hole, and the first slider 421 is slidably sleeved on the outer periphery of the second slide rail 413 through the sliding hole; the force rod 422 is connected to the bottom of the first slider 421 and is communicatively connected to the controller.

[0093] The first slider 421 is provided with a sliding hole, which allows the slider to slide smoothly and can also limit and guide the slider; the force rod 422 can apply a pressing force to the preset position of the plate 100.

[0094] In one embodiment, the force-applying rod 422 is a hydraulic force-applying rod 422.

[0095] As a possible implementation, the force-applying rod 422 can also be a linear motor.

[0096] In one embodiment, the sliding hole includes a first hole segment 4211, a second hole segment 4212, and a third hole segment 4213 arranged sequentially. The cross-section of the first hole segment 4211 is wedge-shaped, the cross-section of the third hole segment 4213 is rectangular, and the width of the second hole segment 4212 is smaller than the widths of the first hole segment 4211 and the third hole segment 4213. The shape of the main body of the second slide 413 matches the shape of the sliding hole.

[0097] The sliding hole includes a first hole segment 4211, a second hole segment 4212, and a second hole segment 4212. The second hole segment 4212 is narrowed. The shape of the main body of the second slide 413 matches the shape of the sliding hole, making the second slide 413 itself stronger and the sliding fit between the second slide 413 and the sliding hole smoother. It also limits each other in the circumferential direction of the sliding hole.

[0098] In one embodiment, the clamping module 2 includes a third slide 21, a fourth slide 22, a second slider 23, a support plate 24, a clamping plate 25, and a fastener 26. The third slide 21 protrudes from the top of the base 1 and extends along a first direction. The third slide 21 has two slides distributed along a second direction on both sides of the base 1. The two ends of the fourth slide 22 are slidably connected to the two third slides 21 respectively. The fourth slide 22 has two slides spaced apart along the first direction. The board 100, the support module, and the displacement detection module are all disposed between the two fourth slides 22. The bottom of the second slider 23 is provided with a second groove, and the second slider 23 connects to the first slide through the second groove. The four slide rails 22 are slidably connected; one end of the support plate 24 is fixedly connected to the top of the second slider 23, and the other end extends toward the plate 100 and forms a suspended support end; the support plate 24 is provided with a threaded hole; the clamping plate 25 is set on the top of the support plate 24, and the clamping plate 25 is provided with a through hole; one end of the fastener 26 is provided with an adjustment cap, and the other end passes through the through hole and is threadedly connected to the threaded hole. The clamping plate 25 and the support end form a clamping space, which is used to clamp the plate 100; wherein, each fourth slide rail 22 is connected to at least one second slider 23, and the clamping spaces on the two fourth slide rails 22 are respectively used to clamp the two sides of the plate 100.

[0099] The third slide rail 21 has two sections, which can provide good sliding support for both ends of the fourth slide rail 22. The fourth slide rail 22 is slidably connected to the third slide rail 21, so that the support plate 24, the clamping plate 25 and the fastener 26 can move along the first direction with the fourth slide rail 22 to adjust their positions in the first direction. The sliding engagement between the second slider 23 and the fourth slide rail 22 allows the support plate 24, the clamping plate 25 and the fastener 26 to move along the second direction with the second slider 23 to adjust their positions in the second direction. The support end of the support plate 24 can support the bottom of the board 100 to be evaluated. The clamping plate 25 is detachably connected to the support plate 24 via fasteners 26. A clamping space is formed between the clamping plate 25 and the support plate 24, which can position and fix the board 100 to be evaluated from the top and bottom ends respectively, and facilitate disassembly and installation for easy replacement of the board 100 to be evaluated. Since the fasteners 26 are threadedly connected to the threaded holes, the height of the clamping space can be easily adjusted by the fasteners 26 to accommodate boards 100 of different thicknesses. With the arrangement of the third slide 21, the fourth slide 22, the second slider 23, the support plate 24, the clamping plate 25 and the fasteners 26, boards 100 of different thicknesses and different sizes in the first and second directions can be clamped, making it highly adaptable.

[0100] In one embodiment, the clamping module further includes a first positioning component 27, which includes a first positioning plate and a first positioning post. One end of the first positioning plate is fixedly connected to the fourth slide rail 22, and the other end is provided with a first positioning hole. The first positioning post is threadedly connected to the first positioning hole and is used to abut against the third slide rail 21 for positioning.

[0101] When the first positioning post abuts against the third slide rail 21, it can position the fourth slide rail 22 to prevent it from sliding; when the first positioning post separates from the third slide rail 21, it is convenient to adjust the position of the fourth slide rail 22.

[0102] In one embodiment, the clamping module further includes a second positioning component 28, which includes a second positioning plate and a second positioning post. One end of the second positioning plate is fixedly connected to the second slider 23, and the other end is provided with a second positioning hole. The second positioning post is threadedly connected to the second positioning hole and is used to abut against the fourth slide rail 22.

[0103] When the second positioning post abuts against the fourth slide rail 22, it can position the second slider 23 to prevent the second slider 23 from sliding; when the second positioning post separates from the fourth slide rail 22, it is convenient to adjust the position of the second slider 23.

[0104] In one embodiment, the cross-section of the third slide 21 is wedge-shaped, and the bottom of the fourth slide 22 is provided with a third groove, the shape of which matches the shape of the third slide 21.

[0105] The cross-section of the third slide 21 is wedge-shaped, and the third slide groove matches its shape, which can prevent the fourth slide 22 from tilting or shaking when it is fixed and during the sliding process, thus ensuring smooth sliding.

[0106] In one embodiment, the second slide is a dovetail groove, and the top of the fourth slide 22 is provided with a slide bar, the shape of which matches the shape of the dovetail groove.

[0107] The second slide is a dovetail groove, and the slide bar matches its shape to prevent the second slider 23 from tilting or shaking when it is fixed and during the sliding process, thus ensuring smooth sliding.

[0108] According to an embodiment of the present invention, in another aspect, an evaluation method for the above-described optimized layout evaluation device for the screw holes of the board 100 is also provided, such as... Figure 7 As shown, it includes:

[0109] S1. The first preset position and the first preset quantity of clamping module 2 are preset according to the size of the board 100 to be evaluated. Due to the setting of the third slide 21, the fourth slide 22, the second slider 23, the support plate 24, the clamping plate 25 and the fastener 26, boards 100 of different thicknesses and different sizes in the first and second directions can be clamped, which has strong applicability.

[0110] S2. Based on the dimensions of the board 100 to be evaluated, preset the second preset number and second preset position of the screw holes.

[0111] S3. Based on the second preset quantity and the second preset position, determine the third preset quantity and the third preset position of the support 3, and move the third preset quantity of support 3 to the corresponding third preset position. The support 3 is an electromagnetic support block, which can be magnetically attached to the base 1 after being powered on, and can be moved on the base 1 as needed after being powered off. The structure is simple and the control method is also simple, making it easy to adjust the position and quantity of the support 3 as needed during the test.

[0112] S4. Based on the connector layout on the board 100 to be evaluated, a preset deformation position with a large deformation on the board 100 to be evaluated is preset, and the probe 5 is moved to the preset deformation position. The probe 5 includes an electromagnetic part and a probe part. The electromagnetic part can be magnetically attracted to the base 1 after being powered on, and can be moved on the base 1 as needed after being powered off, so as to drive the probe part to move; the probe part is connected to the top of the electromagnetic part and is used to detect deformation displacement.

[0113] S5. The board 100 to be evaluated is clamped by the clamping module 2 at the first preset position.

[0114] S6. Based on the layout and model of the connectors on the board 100 to be evaluated, a fourth preset number and a fourth preset position of the pressing mechanism 42 are preset, and the fourth preset number of pressing mechanisms 42 are moved to the corresponding fourth preset position, and the pressing force is preset. Through the sliding cooperation between the first slide rail 412 and the second slide rail 413, and the sliding cooperation between the pressing mechanism 42 and the second slide rail 413, the position of the pressing mechanism 42 can be adjusted in the first direction and the second direction respectively to adapt to different test requirements and apply pressing force to different positions of the board 100 to be evaluated.

[0115] S7. Start the pressing mechanism 42 to press, the probe 5 obtains the deformation displacement and outputs a form.

[0116] S8. Fine-tune the third preset position of the support 3, or add a rubber pad under the board 100 for support, record the third preset position after fine-tuning, start the pressing mechanism 42 again to press, the probe 5 obtains the deformation displacement and outputs the form; the distance of each fine-tuning is less than 10mm.

[0117] S9. The third preset position of the support component 3 is fine-tuned multiple times, or rubber pads are added at different positions below the board 100 for support. After multiple presses by the pressing mechanism 42, multiple forms are output. The deformation displacement in the multiple forms is compared, and the third preset position and number of the support component 3 corresponding to the smaller deformation displacement are selected as the optimal screw hole position and number. Because the board 100 screw hole optimization layout evaluation device is equipped with movable support component 3 and probe component 5, it can evaluate screw holes at different preset positions by moving the position or changing the number of screw holes on the board 100 to be evaluated. This eliminates the need to manufacture board 100 samples with different screw hole positions for deformation testing, reducing the cost of board 100 samples and shortening the manufacturing time.

[0118] In another embodiment, the evaluation method of the board 100 screw hole optimization layout evaluation device, such as Figure 8 As shown, it includes:

[0119] S1. The first preset position and the first preset quantity of clamping module 2 are preset according to the size of the board 100 to be evaluated. Due to the setting of the third slide 21, the fourth slide 22, the second slider 23, the support plate 24, the clamping plate 25 and the fastener 26, boards 100 of different thicknesses and different sizes in the first and second directions can be clamped, which has strong applicability.

[0120] S2. Based on the dimensions of the board 100 to be evaluated, preset the second preset number and second preset position of the screw holes.

[0121] S3. Based on the second preset quantity and the second preset position, determine the third preset quantity and the third preset position of the support 3, and move the third preset quantity of support 3 to the corresponding third preset position. The support 3 is an electromagnetic support block, which can be magnetically attached to the base 1 after being powered on, and can be moved on the base 1 as needed after being powered off. The structure is simple and the control method is also simple, making it easy to adjust the position and quantity of the support 3 as needed during the test.

[0122] S4. Based on the connector layout on the board 100 to be evaluated, a preset deformation position with a large deformation on the board 100 to be evaluated is preset, and the probe 5 is moved to the preset deformation position. The probe 5 includes an electromagnetic part and a probe part. The electromagnetic part can be magnetically attracted to the base 1 after being powered on, and can be moved on the base 1 as needed after being powered off, so as to drive the probe part to move; the probe part is connected to the top of the electromagnetic part and is used to detect deformation displacement.

[0123] S5. The board 100 to be evaluated is clamped by the clamping module 2 at the first preset position.

[0124] S10. Fix the base 1 to the impact table and perform an impact test with the bottom facing down. During the test, the probe 5 records the amount of sinking deformation displacement of the board 100 to be evaluated and outputs the deformation curve.

[0125] S11. Fine-tune the third preset position of the support 3, or add a rubber pad under the board 100 for support, record the third preset position after fine-tuning, and conduct impact test and collect the amount of sinking deformation displacement again, and output the deformation curve; the distance of each fine-tuning is less than 10mm.

[0126] S12. After repeatedly fine-tuning the third preset position of the support component 3, or adding rubber pads at different positions below the board 100 for support, and conducting multiple impact tests and collecting the sinking deformation displacement, multiple deformation curves are output. By comparing the maximum sinking deformation displacement among the multiple deformation curves, the third preset position and third preset number of the support component 3 corresponding to the smaller deformation displacement are selected as the optimal position and number of screw holes. Because the board 100 screw hole optimization layout evaluation device is equipped with movable support component 3 and probe component 5, it can move the position or change the number of screw holes at different preset positions according to the board 100 to be evaluated. This eliminates the need to manufacture board 100 samples with different screw hole positions for deformation testing, reducing the cost of board 100 samples and shortening the manufacturing time.

[0127] The horizontal axis of the deformation curve represents time, and the vertical axis represents the deformation displacement. The main focus of the deformation curve is to observe the maximum value of the deformation displacement. By comparing the maximum values ​​of the deformation displacement of multiple deformation curves, the one with the smallest deformation displacement is selected as the optimal layout.

[0128] In this embodiment, the more support members 3 there are, the smaller the change in deformation displacement.

[0129] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A device for evaluating the optimized layout of screw holes on circuit boards, characterized in that, include: Base (1); A clamping module (2) is attached to the base (1) for clamping the side of the board (100) to be evaluated; The support module includes multiple support members (3), which are movably disposed on the base (1). The multiple support members (3) are used to support different positions of the board (100). A pressing force application module (4) is connected to the base (1). The pressing force application module (4) includes a pressing bracket (41) and multiple pressing mechanisms (42). The multiple pressing mechanisms (42) are movably connected to the pressing bracket (41) and located above the board (100) to be evaluated, for applying pressing force to different positions of the board (100). The displacement detection module includes multiple detectors (5), which are movably disposed on the base (1) and located between the base (1) and the board (100) for detecting the deformation displacement of the board (100) at different positions. The controller is communicatively connected to both the pressing mechanism (42) and the probe (5).

2. The optimized layout evaluation device for board screw holes according to claim 1, characterized in that, The support member (3) is an electromagnetic support block. After being powered on, the electromagnetic support block can be magnetically attached to the base (1). The electromagnetic support block is communicatively connected to the controller. And / or, the detector (5) includes an electromagnetic part and a detector part. The electromagnetic part can be magnetically attached to the base (1) after being energized. The detector part is connected to the top of the electromagnetic part and is used to detect deformation displacement. Both the electromagnetic part and the detector part are communicatively connected to the controller.

3. The device for evaluating the optimized layout of board screw holes according to claim 1 or 2, characterized in that, The pressing bracket (41) includes: Two support bodies (411) are respectively connected to both sides of the base (1) along the first direction; the clamping module (2), the support module and the displacement detection module are all located between the two support bodies (411); The first slide rail (412) is disposed on the top of the support body (411) and extends along the second direction; The second slide (413) is slidably connected at both ends to the two first slides (412), and the pressing mechanism (42) is slidably connected to the second slide (413) along the first direction; Wherein, the first direction is perpendicular to the second direction, and there are at least two second slides (413), with at least two second slides (413) distributed along the second direction.

4. The optimized layout evaluation device for board screw holes according to claim 3, characterized in that, The bottom ends of the second slide (413) are respectively provided with first slide grooves. The second slide (413) slides with the first slide (412) through the first slide groove. The first slide groove is a dovetail groove. The shape of the first slide (412) matches the shape of the first slide groove.

5. The optimized layout evaluation device for board screw holes according to claim 3, characterized in that, The pressing mechanism (42) includes: The first slider (421) is provided with a sliding hole, and the first slider (421) is slidably sleeved on the outer periphery of the second slide rail (413) through the sliding hole; A force-applying rod (422) is connected to the bottom of the first slider (421) and is communicatively connected to the controller.

6. The optimized layout evaluation device for board screw holes according to claim 5, characterized in that, The force-applying rod (422) is a hydraulic force-applying rod (422); And / or, the sliding hole includes a first hole segment (4211), a second hole segment (4212), and a third hole segment (4213) arranged sequentially, wherein the cross-section of the first hole segment (4211) is wedge-shaped, the cross-section of the third hole segment (4213) is rectangular, the width of the second hole segment (4212) is smaller than the width of the first hole segment (4211) and the third hole segment (4213); the shape of the main body of the second slide (413) matches the shape of the sliding hole.

7. The device for evaluating the optimized layout of board screw holes according to any one of claims 1, 2, 4 to 6, characterized in that, The clamping module (2) includes: The third slide (21) protrudes from the top of the base (1) and extends in a first direction. The third slide (21) has two sides distributed in a second direction on both sides of the base (1). The fourth slide (22) is slidably connected to the two third slides (21) at both ends; the fourth slide (22) has two slides spaced apart along the first direction, and the plate (100), the support module and the displacement detection module are all disposed between the two fourth slides (22); The second slider (23) has a second groove at its bottom, and the second slider (23) is slidably connected to the fourth slide rail (22) through the second groove; The support plate (24) is fixedly connected at one end to the top of the second slider (23), and the other end extends toward the plate (100) to form a suspended support end; the support plate (24) is provided with threaded holes; A clamping plate (25) is disposed on the top of the support plate (24), and the clamping plate (25) is provided with a through hole; The fastener (26) has an adjustment cap at one end and is threaded through the through hole and threaded to the threaded hole at the other end. The clamping plate (25) and the support end form a clamping space, which is used to clamp the plate (100). Each of the fourth slides (22) is connected to at least one second slider (23), and the clamping spaces on the two fourth slides (22) are respectively used to clamp the two sides of the board (100).

8. The optimized layout evaluation device for board screw holes according to claim 7, characterized in that, The clamping module (2) further includes a first positioning component (27), which includes a first positioning plate and a first positioning post. One end of the first positioning plate is fixedly connected to the fourth slide rail (22), and the other end is provided with a first positioning hole. The first positioning post is threadedly connected to the first positioning hole and is used to abut against the third slide rail (21) for positioning. And / or, the clamping module (2) further includes a second positioning component (28), the second positioning component (28) includes a second positioning plate and a second positioning post, one end of the second positioning plate is fixedly connected to the second slider (23), and the other end is provided with a second positioning hole; the second positioning post is threadedly connected to the second positioning hole and is used to abut against the fourth slide rail (22).

9. The optimized layout evaluation device for board screw holes according to claim 7, characterized in that, The cross-section of the third slide (21) is wedge-shaped, and the bottom of the fourth slide (22) is provided with a third groove, the shape of which matches the shape of the third slide (21); And / or, the second groove is a dovetail groove, and the top of the fourth slide (22) is provided with a slide bar, the shape of which matches the shape of the dovetail groove.

10. An evaluation method for an evaluation apparatus for optimizing the layout of screw holes in circuit boards according to any one of claims 1 to 9, characterized in that, include: The first preset position and the first preset number of clamping modules (2) are preset according to the size of the board (100) to be evaluated; The second preset number and second preset position of screw holes are preset according to the size of the board (100) to be evaluated; Based on the second preset quantity and the second preset position, determine the third preset quantity and the third preset position of the support member (3), and move the third preset quantity of support members (3) to the corresponding third preset position; Based on the layout of the connectors on the board (100) to be evaluated, a preset deformation position with a large deformation on the board (100) to be evaluated is preset, and the probe (5) is moved to the preset deformation position. The board (100) to be evaluated is clamped by the clamping module (2) at the first preset position; Based on the layout and model of the connectors on the board (100) to be evaluated, the fourth preset number and fourth preset position of the pressing mechanism (42) are preset, and the fourth preset number of pressing mechanisms (42) are moved to the corresponding fourth preset position, and the pressing force is preset. The pressing mechanism (42) is activated to press, the probe (5) acquires the deformation displacement, and outputs a form; Fine-tune the third preset position of the support (3), or add a rubber pad under the plate (100) for support, record the third preset position after fine-tuning, start the pressing mechanism (42) again to press, the probe (5) obtains the deformation displacement and outputs the form; The third preset position of the support component (3) is finely adjusted multiple times, or rubber pads are added at different positions below the board (100) for support. After pressing the pressing mechanism (42) multiple times, multiple forms are output. The deformation displacement in the multiple forms is compared, and the third preset position and third preset number of the support component (3) corresponding to the smaller deformation displacement are selected as the optimal screw hole position and number.

11. An evaluation method for an evaluation apparatus for optimizing the layout of screw holes in circuit boards according to any one of claims 1 to 9, characterized in that, include: The first preset position and the first preset number of clamping modules (2) are preset according to the size of the board (100) to be evaluated; The second preset number and second preset position of screw holes are preset according to the size of the board (100) to be evaluated; Based on the second preset quantity and the second preset position, determine the third preset quantity and the third preset position of the support member (3), and move the third preset quantity of support members (3) to the corresponding third preset position; Based on the layout of the connectors on the board (100) to be evaluated, a preset deformation position with a large deformation on the board (100) to be evaluated is preset, and the probe (5) is moved to the preset deformation position. The board (100) to be evaluated is clamped by the clamping module (2) at the first preset position; Fix the base (1) to the impact table and perform an impact test with the bottom facing down. During the test, the probe (5) records the sinking deformation displacement of the board (100) to be evaluated and outputs the deformation curve. Fine-tune the third preset position of the support (3), or add a rubber pad under the plate (100) for support, record the third preset position after fine-tuning, conduct impact test and collect the amount of sinking deformation displacement again, and output the deformation curve. After repeatedly fine-tuning the third preset position of the support component (3), or adding rubber pads at different positions below the board (100) for support, after repeatedly conducting impact tests and collecting the amount of sinking deformation displacement, output multiple deformation curves, compare the maximum value of sinking deformation displacement among the multiple deformation curves, and select the third preset position and third preset number of the support component (3) corresponding to the smaller deformation displacement as the optimal position and number of screw holes.

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