A fastener performance testing apparatus
Patent Information
- Application Number
- CN202522087398.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-28
- Publication Date
- 2026-09-15
- Estimated Expiration
- 2035-09-28
AI Technical Summary
[0003]然而，在对紧固件进行性能测试时，现有的测试装置难以监测紧固件在不同压力下的紧定过程，所得到的测试结果无法准确反映紧固件的性能
在本申请的实施例中，针对于现有技术无法准确反映紧固件的性能，本申请提供了通过压力传感单元记录压力，并通过对应重量的下压砝码实现钻孔的解决方案，具体为：一种紧固件性能测试装置，所述装置用于在目标测试压力条件下通过待测螺丝对目标基材进行钻孔；所述装置包括：控制组件、支撑组件、钻孔组件和支架；所述钻孔组件活动设置于所述支架；所述支撑组件设有压力传感单元；所述钻孔组件设有扭矩传感单元；所述控制组件分别与所述压力传感单元和所述扭矩传感单元连接；当进行测试时，所述目标基材设置于所述支撑组件，所述待测螺丝设置于所述目标基材；所述钻孔组件设有与所述目标测试压力对应重量的下压砝码，使所述钻孔组件向所述目标基材移动；所述钻孔组件转动所述待测螺丝，使所述待测螺丝攻入所述目标基材；所述压力传感单元的压力信号以及所述扭矩传感单元的扭矩信号传输至所述控制组件。本申请通过压力传感单元以及对应重量的下压砝码进行紧固件性能检测，能够监测紧固件在不同压力下的紧定过程，从而获得对紧固件更为全面的性能评估结果。
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Abstract
Description
Technical Field
[0001] This application relates to the field of parts testing technology, and in particular to a fastener performance testing device. Background Technology
[0002] The types of fasteners used in construction and engineering projects are numerous. Even screws of the same specifications and purpose can have different performance characteristics due to differences in manufacturers or non-standard designs. When evaluating the performance of fasteners, their performance can be accurately assessed by analyzing the pressure / torque curve over time. This method not only reveals the durability and stability of fasteners during use but also helps identify the impact of different manufacturing processes or designs on the actual application effect of fasteners, thus providing a scientific basis for selecting appropriate fasteners.
[0003] However, when performing performance tests on fasteners, existing testing equipment is unable to monitor the fastening process of fasteners under different pressures, and the test results obtained cannot accurately reflect the performance of the fasteners. Utility Model Content
[0004] In view of the above problems, this application is made in order to provide a fastener performance testing device that overcomes or at least partially solves the above problems.
[0005] This application provides a fastener performance testing device, which is used to drill a hole in a target substrate through a screw under test under a target test pressure condition; the device includes: a control component, a support component, a drilling component, and a bracket; The drilling assembly is movably mounted on the bracket; the support assembly is equipped with a pressure sensing unit; the drilling assembly is equipped with a torque sensing unit; the control assembly is connected to the pressure sensing unit and the torque sensing unit respectively; During testing, the target substrate is placed on the support assembly, and the screw to be tested is placed on the target substrate; the drilling assembly is equipped with a downward pressure weight corresponding to the target test pressure, causing the drilling assembly to move towards the target substrate; the drilling assembly rotates the screw to be tested, causing the screw to be tested to penetrate the target substrate; the pressure signal from the pressure sensing unit and the torque signal from the torque sensing unit are transmitted to the control assembly.
[0006] Furthermore, it also includes: displacement components; The drilling assembly is connected to the support via the displacement assembly, and the displacement assembly is movably mounted on the support.
[0007] Furthermore, the displacement assembly includes an adjustable sliding seat, a fixed pulley assembly, and a balance weight; The drilling assembly is disposed on the adjustable sliding seat; the adjustable sliding seat is movably connected to the bracket via a gear and rack structure; The fixed pulley assembly is mounted on the bracket; the adjustable sliding seat is connected to the balance weight via the fixed pulley assembly.
[0008] Furthermore, the bracket includes: a base, a guide shaft, and a support shaft; The guide shaft and the support shaft are fixedly mounted on the base; the fixed pulley assembly is fixedly mounted on the support shaft; and the adjustable sliding seat is movably mounted on the guide shaft.
[0009] Furthermore, a handwheel is provided on the side of the adjustable sliding seat; the handwheel is connected to the gear and rack structure of the adjustable sliding seat.
[0010] Furthermore, the device is used to pre-position the drilling location of the target substrate using a drill bit; the drilling assembly includes a servo motor and a three-jaw chuck. The output shaft of the servo motor is connected to the three-jaw chuck. During testing, the bit is positioned on the three-jaw chuck, and the drilling assembly moves toward the target substrate, causing the bit to imprint a positioning hole on the target substrate.
[0011] Furthermore, the drilling assembly includes: a motor tray, a weight tray, and a tray fixing plate; The servo motor is mounted on the motor tray; the downward pressure weight is mounted on the weight tray; The tray fixing plate is connected to the motor tray, the weight tray and the displacement component.
[0012] Furthermore, the weight tray is provided with a limiting screw; the limiting screw passes through the pressing weight and the pressing weight is locked by a nut corresponding to the limiting screw.
[0013] Furthermore, the support assembly includes: an XY-axis slide and a flat-jaw vise; The XY-axis slide is fixedly mounted on the bracket; the flat-jaw vise is movably mounted on the XY-axis slide. During testing, the target substrate is fixedly mounted on the flat-jaw vise, and the flat-jaw vise is moved via the XY-axis slide to adjust the target substrate to the target test position.
[0014] Furthermore, the target substrate is made of cork; the screw to be tested is made of stainless steel.
[0015] This application has the following advantages: In the embodiments of this application, addressing the limitation of existing technologies in accurately reflecting fastener performance, this application provides a solution that records pressure using a pressure sensing unit and achieves drilling using a downward pressure weight of corresponding weight. Specifically, it provides a fastener performance testing device for drilling a target substrate using a screw under test under target test pressure conditions. The device includes a control component, a support component, a drilling component, and a bracket. The drilling component is movably mounted on the bracket. The support component is equipped with a pressure sensing unit. The drilling component is equipped with a torque sensing unit. The control component is connected to both the pressure sensing unit and the torque sensing unit. During testing, the target substrate is positioned on the support component, and the screw under test is positioned on the target substrate. The drilling component is equipped with a downward pressure weight corresponding to the target test pressure, causing the drilling component to move towards the target substrate. The drilling component rotates the screw under test, causing it to penetrate the target substrate. The pressure signal from the pressure sensing unit and the torque signal from the torque sensing unit are transmitted to the control component. This application uses a pressure sensing unit and corresponding weights to test the performance of fasteners, enabling monitoring of the fastening process under different pressures, thereby obtaining a more comprehensive performance evaluation result for the fasteners. Attached Figure Description
[0016] To more clearly illustrate the technical solution of this application, the drawings used in the description of this application will be briefly introduced below. Obviously, the 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.
[0017] Figure 1 This is a schematic diagram of the overall structure of a fastener performance testing device provided in one embodiment of this application; Figure 2 This is a first structural schematic diagram of a fastener performance testing device provided in an embodiment of this application; Figure 3 This is a second structural schematic diagram of a fastener performance testing device provided in one embodiment of this application; Figure 4 This is a graph showing the performance test results of fastener number 1 in one embodiment of this application; Figure 5 This is a graph showing the performance test results of fastener number 2 in one embodiment of this application; Figure 6 This is a graph showing the performance test results of fastener number 3 in one embodiment of this application; Figure 7 This is a graph showing the performance test results of fastener number 4 in one embodiment of this application; Figure 8 This is a graph showing the performance test results of fastener number 5 in one embodiment of this application; Figure 9 This is a graph showing the performance test results of fastener number 6 in one embodiment of this application; Figure 10 This is a graph showing the performance test results of fastener number 7 in one embodiment of this application; Figure 11 This is a graph showing the performance test results of fastener number 8 in one embodiment of this application.
[0018] The attached figures are labeled as follows: 1. Control component; 2. Support component; 21. XY axis slide; 22. Flat-jaw vise; 3. Drilling component; 31. Servo motor; 32. Three-jaw chuck; 33. Motor tray; 34. Weight tray; 341. Limit screw; 35. Tray fixing plate; 4. Bracket; 41. Base; 42. Guide shaft; 43. Support shaft; 5. Displacement component; 51. Adjustable sliding seat; 511. Handwheel; 52. Fixed pulley kit; 53. Balance weight. Detailed Implementation
[0019] To make the objectives, features, and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0020] The inventors discovered through analysis of existing technologies that existing testing devices typically require manual pressure application or can only provide constant pressure from equipment. Therefore, existing testing devices are unable to monitor the fastening process of fasteners under different pressures, and the test results obtained cannot accurately reflect the performance of the fasteners.
[0021] The purpose of this application is to monitor the fastening process of fasteners under different pressures, from before drilling to after tightening, and to observe the change of the fastening torque of the fastener over time. Furthermore, by deriving the torque-time area diagram under a specific pressure, it is believed that with the support of a large amount of test data in the future, it can serve as a reliable product performance reference standard for retailers and manufacturers.
[0022] Reference Figure 1-3 This application illustrates a fastener performance testing device according to an embodiment of the present application. The device is used to drill a hole in a target substrate through a screw under test under a target test pressure condition. The device includes: a control component 1, a support component 2, a drilling component 3, and a bracket 4. The drilling assembly 3 is movably mounted on the bracket 4; the support assembly 2 is provided with a pressure sensing unit; the drilling assembly 3 is provided with a torque sensing unit; the control assembly 1 is connected to the pressure sensing unit and the torque sensing unit respectively; During testing, the target substrate is placed on the support assembly 2, and the screw to be tested is placed on the target substrate; the drilling assembly 3 is equipped with a downward pressure weight corresponding to the target test pressure, causing the drilling assembly 3 to move towards the target substrate; the drilling assembly 3 rotates the screw to be tested, causing the screw to penetrate the target substrate; the pressure signal from the pressure sensing unit and the torque signal from the torque sensing unit are transmitted to the control assembly 1.
[0023] In the embodiments of this application, addressing the limitation of existing technologies in accurately reflecting fastener performance, this application provides a solution that records pressure using a pressure sensing unit and achieves drilling using a corresponding weight of downward pressure. Specifically, it provides a fastener performance testing device for drilling a target substrate using a screw under test under target test pressure conditions. The device includes a control component 1, a support component 2, a drilling component 3, and a bracket 4. The drilling component 3 is movably mounted on the bracket 4. The support component 2 is equipped with a pressure sensing unit. The drilling component 3 is equipped with a torque sensing unit. The control component 1 is connected to both the pressure sensing unit and the torque sensing unit. During testing, the target substrate is positioned on the support component 2, and the screw under test is positioned on the target substrate. The drilling component 3 is equipped with a downward pressure weight corresponding to the target test pressure, causing the drilling component 3 to move towards the target substrate. The drilling component 3 rotates the screw under test, causing it to penetrate the target substrate. The pressure signal from the pressure sensing unit and the torque signal from the torque sensing unit are transmitted to the control component 1. This application uses a pressure sensing unit and corresponding weights to test the performance of fasteners, enabling monitoring of the fastening process under different pressures, thereby obtaining a more comprehensive performance evaluation result for the fasteners.
[0024] The following will further describe a fastener performance testing apparatus in this exemplary embodiment.
[0025] It should be noted that the control component 1 can be a personal computer equipped with corresponding torque reading software and pressure data reading software. The control component 1 can process the signals from the torque sensing unit to obtain the torque-time curve during the fastener tightening process (from before drilling to after tightening) under different specific pressures, thus fully reflecting the fastener's performance. Furthermore, this application utilizes modular construction, allowing for quick replacement of parts to adapt to different screw specifications and testing conditions.
[0026] The support component 2 can be used to fix the target substrate to be drilled, and the test screw can be set at the opening of the target test position of the target substrate before drilling.
[0027] The operator can adjust the weight of the pressure weight based on the pressure value fed back by the pressure sensing unit to make it correspond to the pressure required by the test environment.
[0028] In one embodiment of this application, it further includes: a displacement component 5; The drilling assembly 3 is connected to the bracket 4 via the displacement assembly 5, and the displacement assembly 5 is movably disposed on the bracket 4.
[0029] It should be noted that the drilling assembly 3 can move smoothly along a specific direction on the support 4 with the help of the displacement assembly 5.
[0030] Reference Figure 2-3 In one embodiment of this application, the displacement component 5 includes an adjustable sliding seat 51, a fixed pulley assembly 52, and a balance weight 53; The drilling assembly 3 is disposed on the adjustable sliding seat 51; the adjustable sliding seat 51 is movably connected to the bracket 4 through a gear and rack structure; The fixed pulley assembly 52 is disposed on the bracket 4; the adjustable sliding seat 51 is connected to the balance weight 53 through the fixed pulley assembly 52.
[0031] It should be noted that the fixed pulley assembly 52 may include two fixed pulleys. The gear and rack structure between the adjustable sliding seat 51 and the bracket 4 can ensure the positional accuracy and motion stability of the adjustable sliding seat 51.
[0032] The mechanical conditions of the adjustable sliding seat 51 connected to it can be adjusted by using balance weights 53 of different weights, so that the drilling assembly 3 connected to the adjustable sliding seat 51 can drill the screw to be tested into the target substrate under the pressure of the downward weight.
[0033] In one embodiment of this application, the bracket 4 includes: a base 41, a guide shaft 42, and a support shaft 43; The guide shaft 42 and the support shaft 43 are fixedly mounted on the base 41; the fixed pulley assembly 52 is fixedly mounted on the support shaft 43; and the adjustable sliding seat 51 is movably mounted on the guide shaft 42.
[0034] It should be noted that the guide shaft 42 is vertically arranged on the base 41, and the adjustable sliding seat 51 can move along the axial direction of the guide shaft 42, thereby having a large range of motion and ensuring that the screw to be tested can penetrate the target substrate at an accurate angle (vertical).
[0035] The support shaft 43 can be made of aluminum profile, which has high strength and is easy to install. Several support shafts 43 can form a "gate" shaped structure to support the fixed pulley assembly 52.
[0036] In one specific embodiment of this application, the support component 2 may also be disposed on the base 41.
[0037] In one embodiment of this application, a handwheel 511 is provided on the side of the adjustable sliding seat 51; the handwheel 511 is connected to the gear and rack structure of the adjustable sliding seat 51.
[0038] It should be noted that when conducting the test, the drilling assembly 3 is connected to the screw to be tested, and the handwheel 511 is released so that the drilling assembly 3, under the action of the downward pressure weight, drives the screw to be tested into the target substrate.
[0039] In one embodiment of this application, the device is used to pre-position the drilling position of the target substrate using a drill bit; the drilling assembly 3 includes: a servo motor 31 and a three-jaw chuck 32; The output shaft of the servo motor 31 is connected to the three-jaw chuck 32; During testing, the bit is positioned on the three-jaw chuck 32, and the drilling assembly 3 moves toward the target substrate, causing the bit to imprint a positioning hole on the target substrate.
[0040] It should be noted that the servo motor 31 can be an adjustable speed brushless motor, capable of operating at a speed that meets the test requirements; the output shaft of the servo motor 31 can be connected to the three-jaw chuck 32 via a coupling. When placing the screw to be tested at the positioning hole, it is necessary to ensure that the tip of the screw is concentric with the positioning hole.
[0041] In one embodiment of this application, the drilling assembly 3 includes: a motor tray 33, a weight tray 34, and a tray fixing plate 35; The servo motor 31 is mounted on the motor tray 33; the pressing weight is mounted on the weight tray 34; The tray fixing plate 35 is connected to the motor tray 33, the weight tray 34 and the displacement component 5.
[0042] It should be noted that the motor tray 33 should have an opening for the output shaft of the servo motor 31 to pass through; the torque sensing unit can be disposed between the output shaft of the servo motor 31 and the three-jaw chuck 32. The motor tray 33 and the weight tray 34 can be disposed at different ends of the servo motor 31, and the tray fixing plate 35 can be disposed on the side of the servo motor 31.
[0043] In one embodiment of this application, the weight tray 34 is provided with a limiting screw 341; the limiting screw 341 passes through the pressing weight and the pressing weight is locked by a nut corresponding to the limiting screw 341.
[0044] It should be noted that the limiting screw 341 can be vertically mounted on the weight tray 34; the pressing weight should have a through hole corresponding to the limiting screw 341. The limiting screw 341 can be an M10 lead screw. During testing, the pressing weight is locked to the limiting screw 341 with a nut to prevent the pressing weight from jumping, thus providing a constant drilling pressure.
[0045] In one embodiment of this application, the support component 2 includes: an XY axis slide 21 and a flat-jaw vise 22; The XY-axis slide 21 is fixedly mounted on the bracket 4; the flat-jaw vise 22 is movably mounted on the XY-axis slide 21; During testing, the target substrate is fixedly mounted on the flat-jaw vise 22, and the flat-jaw vise 22 moves via the XY-axis slide 21 to adjust the target substrate to the target test position.
[0046] It should be noted that the flat-jaw vise 22 can stably clamp the target substrate; the XY-axis slide 21 can adjust the position of the flat-jaw vise 22 in both the X and Y axes, thereby adjusting the position of the target substrate.
[0047] In one embodiment of this application, the target substrate is made of cork; the screw to be tested is made of stainless steel.
[0048] In a specific implementation, the parameters that each component of the device needs to satisfy are as follows: The servo motor 31 has a speed range of 200-4000 rpm and a working error within 1%. The torque sensor has a range of 40 Nm and a reading scan frequency of 5-6 times per second. The pressure sensing unit has a range of not less than 1 kN and a reading accuracy of ±10 N.
[0049] The eccentricity of the rotating shaft of the drilling assembly 3 shall not exceed 0.5 mm; the clamping range of the three-jaw chuck 32 shall be 0.5-16 mm; the opening width of the flat-jaw vise 22 shall not be less than 20 cm; the diameter of the bit / drill bit that can be clamped shall be 1.5-12 mm. The test size of the screw under test can be up to 20cm (the dimensions of the guide shaft 42 and the support shaft 43 can be changed to increase the test size range of the screw under test).
[0050] In a specific implementation, fastener performance testing can be performed through the following steps: S1. Inspect the equipment to ensure that all components of the device are intact and the power connection is normal; select a suitable target substrate and ensure that its surface is flat and clean; prepare the screw to be tested and the corresponding bit that meet the size; turn on the computer power and start the corresponding torque reading software and pressure data reading software; S2. Securely fix the target substrate to the support component 2 to ensure that it will not move during operation; S3. Select a suitable bit and install it on the three-jaw chuck 32. Use the handwheel 511 to adjust the servo motor 31 to the appropriate height. Start the servo motor 31 and print positioning holes on the target substrate. S4. Use handwheel 511 to adjust servo motor 31 upwards; insert self-tapping screws into the positioning holes, ensuring that the tip of the screw is concentric with the positioning holes. S5. Set the speed of the servo motor 31 according to the test requirements, place the pressing weight on the limit screw 341 and the weight tray 34, and lock the weight with a nut to prevent jumping, so as to provide a constant drilling pressure. S6. Release handwheel 511 to allow the motor to drill the screw into the substrate at the set speed and pressure; S7. During the test, the software automatically records data to the computer and analyzes and processes the data.
[0051] As an example, the following table shows the conditions and variables for conducting eight tests using the fastener performance testing device of this application. The test data is converted into a torque-time area graph as the test result. The test results for the eight tests (numbered 1-8) are shown below. Figure 4-11 As shown.
[0052]
[0053] The test results show that, at the same rotational speed, the greater the pressure, the smaller the drilling torque. When the pressure reaches a certain level, the trend of decreasing drilling torque will slow down. At the same time, at the same pressure, the greater the rotational speed, the smaller the drilling torque will be.
[0054] Although preferred embodiments of the present application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present application.
[0055] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.
[0056] The fastener performance testing device provided in this application has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of this application. Therefore, the content of this specification should not be construed as a limitation of this application.
Claims
1. A fastener performance testing device, characterized in that, The device is used to drill a hole in a target substrate through a screw under test under target test pressure conditions; the device includes: a control component, a support component, a drilling component, and a bracket; The drilling assembly is movably mounted on the bracket; the support assembly is equipped with a pressure sensing unit; the drilling assembly is equipped with a torque sensing unit; the control assembly is connected to the pressure sensing unit and the torque sensing unit respectively; During testing, the target substrate is placed on the support assembly, and the screw to be tested is placed on the target substrate; the drilling assembly is equipped with a downward pressure weight corresponding to the target test pressure, causing the drilling assembly to move towards the target substrate; the drilling assembly rotates the screw to be tested, causing the screw to be tested to penetrate the target substrate; the pressure signal from the pressure sensing unit and the torque signal from the torque sensing unit are transmitted to the control assembly.
2. The fastener performance testing device according to claim 1, characterized in that, Also includes: Displacement components; The drilling assembly is connected to the support via the displacement assembly, and the displacement assembly is movably mounted on the support.
3. The fastener performance testing device according to claim 2, characterized in that, The displacement assembly includes an adjustable sliding seat, a fixed pulley assembly, and a balance weight; The drilling assembly is disposed on the adjustable sliding seat; the adjustable sliding seat is movably connected to the bracket via a gear and rack structure; The fixed pulley assembly is mounted on the bracket; the adjustable sliding seat is connected to the balance weight via the fixed pulley assembly.
4. The fastener performance testing device according to claim 3, characterized in that, The bracket includes: a base, a guide shaft, and a support shaft; The guide shaft and the support shaft are fixedly mounted on the base; the fixed pulley assembly is fixedly mounted on the support shaft; and the adjustable sliding seat is movably mounted on the guide shaft.
5. The fastener performance testing device according to claim 3, characterized in that, The adjustable sliding seat is provided with a handwheel on its side; the handwheel is connected to the gear and rack structure of the adjustable sliding seat.
6. The fastener performance testing device according to claim 2, characterized in that, The device is used to pre-position the drilling location of the target substrate using a drill bit; the drilling assembly includes a servo motor and a three-jaw chuck. The output shaft of the servo motor is connected to the three-jaw chuck. During testing, the bit is positioned on the three-jaw chuck, and the drilling assembly moves toward the target substrate, causing the bit to imprint a positioning hole on the target substrate.
7. The fastener performance testing device according to claim 6, characterized in that, The drilling assembly includes: a motor tray, a weight tray, and a tray fixing plate; The servo motor is mounted on the motor tray; the downward pressure weight is mounted on the weight tray; The tray fixing plate is connected to the motor tray, the weight tray and the displacement component.
8. The fastener performance testing device according to claim 7, characterized in that, The weight tray is equipped with a limiting screw; the limiting screw passes through the pressing weight and is locked by a nut corresponding to the limiting screw.
9. The fastener performance testing device according to claim 1, characterized in that, The support assembly includes: an XY axis slide and a flat-jaw vise; The XY-axis slide is fixedly mounted on the bracket; the flat-jaw vise is movably mounted on the XY-axis slide. During testing, the target substrate is fixedly mounted on the flat-jaw vise, and the flat-jaw vise is moved via the XY-axis slide to adjust the target substrate to the target test position.
10. The fastener performance testing device according to claim 1, characterized in that, The target substrate is made of cork; the screw to be tested is made of stainless steel.