Digital calibration device for chamfer measuring tool

Abstract

The invention mainly relates to the technical field of calibration of a skin chamfer measuring tool after aircraft assembly. Specifically, the invention provides a device for digitally calibrating a chamfer measuring tool. The device can be used for digitally calibrating the chamfer measuring tools of the skin and the related parts after the aircraft is assembled, and the reliability and the precision of the calibration process can be remarkably improved by using the device. In addition, unqualified products can be prevented from being delivered and used, and therefore the high standard of aviation aircraft assembly quality is guaranteed. The digital calibration tool utilizes advanced sensor and computer technologies to realize automatic measurement and data processing, so that personal errors are reduced, and the accuracy and repeatability of calibration are improved. In this way, it can be ensured that the assembly quality of aviation products reaches the highest standard, and then the safety and reliability of aviation aircrafts are guaranteed.

Description

Technical Field

[0001] This invention primarily relates to the field of calibration technology for measuring tools used in the chamfering of aircraft skin after assembly. Specifically, this invention provides a device for the digital calibration of chamfering measuring tools. Background Technology

[0002] With the rapid development of the aviation industry, the requirements for the quality and precision of aviation product assembly have become increasingly stringent. In the field of aviation manufacturing, the pursuit of assembly quality is endless. Every detail can affect the overall performance and safety of an aircraft. Therefore, every component of an aircraft, from its design to final assembly, must adhere to strict quality control standards. Whether it's optimizing the precision of the aircraft's aerodynamic shape or the sealing performance of its access panels, both are closely related to the aircraft's assembly quality. Especially for critical parts that affect the aircraft's aerodynamic characteristics, such as the skin and access panels, the requirements for assembly precision are extremely stringent. The step quality of these parts, that is, the joining precision between components, directly affects the overall performance of the aircraft.

[0003] To meet these high standards and stringent quality requirements, the skin protrusions on aircraft components must undergo meticulous processing to ensure a perfect fit with the mating surfaces of adjacent components. This typically involves stepping and chamfering the skin edges to reduce air resistance and improve overall aerodynamic efficiency. However, to ensure the accuracy of these chamfers, specialized chamfering measuring tools must be used for measurement and verification. However, these tools may gradually lose accuracy over time due to wear or other factors; therefore, rigorous calibration is essential before using them.

[0004] Currently, the calibration process for chamfering measuring tools typically involves selecting a radius template that matches the tool being measured. The first step in calibration is to check the gauge's indication error, which needs to be calibrated and adjusted as necessary. Once the indication error is calibrated, the next step is to determine the gauge's zero point. After determining the zero point, the standard chamfer dimensions corresponding to each calibration point across the entire measurement range can be selected for precise calibration. However, this traditional calibration method has significant limitations. It relies on manual visual inspection or measurement, which is not only time-consuming but also susceptible to human error, leading to insufficient calibration accuracy and reducing the overall accuracy of the calibration. Therefore, there is an urgent need to design a digital calibration tool for chamfering measuring tools to improve the accuracy and efficiency of the calibration process. Summary of the Invention

[0005] To address the problems existing in the prior art, the present invention provides a device for digital calibration of chamfering measuring tools. This digital calibration device enables rapid and efficient calibration of manual chamfering measuring tools for aerospace products, avoiding detection failures caused by excessive wear of the chamfering measuring tools, which in turn affects the chamfering measurement results of aerospace products, leading to errors and omissions, and even more importantly, affecting the high-quality and rapid delivery of aerospace products.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] According to one aspect of this application, a device for digital calibration of a chamfering measuring tool is provided, comprising a mechanical structure and a sensing and control structure;

[0008] The mechanical structure consists of an actuator cover 1, a main body 2, an HDMI port 8, an HTTP port 9, connecting screws 10, bearings 12, a calibration body 13, a transmission shaft 14, and a rotation servo motor 15.

[0009] The sensing and control structure consists of a display screen 3, an alarm 4, an input component 5, a switch button 6, a reset button 7, a strain sensor 11, a strain signal conditioning module 16, a data acquisition module 17, a microcontroller 18, and a controller 19.

[0010] The actuator cover 1 is a protective component. The actuator cover 1 is installed on the upper end of the main body 2. A rotary servo motor 15 is installed inside the actuator cover 1, which can protect the rotary servo motor 15 installed inside and play the role of protecting the rotary servo motor 15.

[0011] The main body 2 is the main load-bearing component. The upper part of the main body 2 is equipped with most of the components such as the actuator cover 1 and the rotary servo motor 15, which serve as support and placement.

[0012] The HDMI port 8 is a display expansion component. The HDMI port 8 is installed on the left side of the main body 2 and is distributed vertically with the HTTP port 9. The HDMI port 8 can be directly connected to the digital display device using an adapter cable, so that the display content of the display screen 3 can be directly transmitted to the digital display device through the HDMI port 8, thereby realizing the extended display of display data.

[0013] The HTTP port 9 is a program upgrade component. The HTTP port 9 is installed on the left side of the host body 2. Program upgrades and data maintenance are performed through the HTTP port 9 to ensure that the device always maintains high-performance operation.

[0014] The connecting screw 10 is the main connecting component. The actuator cover 1 and other components are installed on the upper end of the main body 2 by the connecting screw 10. The operation is simple and the connection is tight, which facilitates subsequent disassembly and maintenance.

[0015] The bearing 12 is a transmission protection component. The smooth surfaces of the inner and outer rings of the bearing 12 are used to connect the transmission shaft and the support to reduce friction and protect the connection between the output shaft of the rotary servo motor 15 and the transmission shaft 14 and the support.

[0016] The calibration body 13 is an angle support component that can adjust its relative position with the main body 2 according to the rotation of the servo motor 15, so as to provide the required verification angle for the device.

[0017] The drive shaft 14 is a transmission component. The rotation of the rotary servo motor 15 can be transmitted to the calibration body 13 through the drive shaft 14, which drives the calibration body 13 to the required position, thereby achieving the purpose of calibration and testing of the chamfering measuring tool.

[0018] The rotary servo motor 15 is a transmission power component. The rotary servo motor 15 can drive the transmission shaft 14 to rotate, and then drive the calibration body 13 to rotate through the transmission shaft 14, so as to adjust its angle and facilitate digital calibration and testing of the chamfering measuring tool.

[0019] The display screen 3 is a result display component. The display screen 3 is set on the upper surface of the main body 2 and is used to display the calibration results, so that the calibration results are displayed more intuitively.

[0020] The alarm 4 is an alarm warning component. The alarm 4 is installed on the main body 2. When the calibration result does not meet the requirements (the output voltage is not in the range of 0.1V to 0.15V), the alarm 4 will sound an alarm under the action of the controller 19 to prevent calibration problems caused by human error from being missed.

[0021] The input component 5 is an input determination unit. When using the device to perform digital calibration of the chamfering measuring tool, the calibration angle is input using the input component 5, which facilitates the control of the angle as needed and improves the reliability of calibration.

[0022] The switch button 6 is a switch component used to realize the power on and power off of the device. The switch button 6 can be used to conveniently power on and off the device, making the chamfering measuring tool digital calibration tool more convenient to use.

[0023] The reset button 7 is a data reset component. The reset button 7 is installed on the main body 2 and can be reset to perform a second calibration after the first calibration is completed. The second calibration performed by the reset button 7 provides accuracy guarantee for the device.

[0024] The strain sensor 11 is a sensing component that can indirectly provide feedback on the gap size through the deformation of the strain sensor 11. By adjusting the placement angle between the transmission shaft 14 and the calibration body 13, the chamfering measuring tool is brought into contact with the strain sensor 11 for detection. The strain signal conditioning module 16 is used to condition the strain signal, converting it into a voltage signal. The microcontroller 18 processes the voltage signal to form gap data, which is then displayed on the display screen 3 to determine whether the gap is qualified or not.

[0025] The strain signal conditioning module 16 is a signal conditioning component. The strain signal conditioning module 16 is installed inside the main body 2. It can condition the strain signal, convert the strain signal into a voltage signal, and transmit the voltage signal to the microcontroller 18, so that the microcontroller 18 and the controller 19 can process the data.

[0026] The data acquisition module 17 is a strain signal acquisition component. The data acquisition module 17 can acquire the strain signal from the strain sensor 11 and transmit it to the strain signal conditioning module 16, which then conditions and processes the strain signal.

[0027] The microcontroller 18 is a signal processing and decision-making component. The microcontroller 18 is installed inside the main body 2 by connecting screws and receives the voltage signal conditioned by the strain signal conditioning module 16. After processing by the microcontroller 18, the gap data and compliance judgment results made according to the logical relationship are displayed on the display screen 3. The microcontroller 18 issues control commands to the controller 19 according to the logical results, thus playing the role of initiating control commands.

[0028] The controller 19 is a control command execution component. The microcontroller 18 uses the calibration angle entered by the input component 5 to issue control commands to the controller 19 according to the logical relationship. After receiving the command, the controller 19 drives the rotation servo motor 15 to work. The rotation servo motor 15 drives the transmission shaft 14 to rotate, which in turn drives the calibration body 13 to rotate synchronously. The placement angle of the calibration body 13 is adjusted so that it rotates to the corresponding position with the chamfer measuring tool to be calibrated. The tool to be calibrated is placed on the upper surface of the strain sensor 11 so that it contacts the strain sensor 11. At this time, the strain sensor 11 provides feedback on the gap size through strain. If it is unqualified, the controller 19 drives the alarm 4 to take corresponding actions.

[0029] The following process is implemented: The microcontroller is controlled by a control signal. First, the chamfer signal to be calibrated is input using the input component. The microcontroller then instructs the controller to issue corresponding control commands. Different control commands control different actions. For example, a switch command controls the rotation of a servo motor, which in turn rotates the drive shaft, causing the calibration body to rotate. This causes the strain sensor to generate a corresponding analog signal. The data acquisition module collects the analog signal and transmits it to the strain signal conditioning module, which converts the model signal into a digital signal. This digital signal is then transmitted to the microcontroller for further judgment. Based on the digital signal, a conclusion of whether the calibration is qualified or not is made, and a display command is sent to the controller. The display screen shows the specific calibration value and conclusion. If a failure occurs, the controller activates an alarm to issue a warning signal. After one calibration is completed, a reset signal can be used to control the microcontroller to reset the previous calibration to zero, ready for the next calibration. This process achieves digital calibration of the gap measuring tool.

[0030] The advantages of this application are:

[0031] After a thorough study of existing measurement technologies and tools on the market, we clearly recognize the significant challenges in the digital calibration of chamfering measuring tools. Currently, the calibration of chamfering measuring tools still largely relies on manual operation. This reliance means that subjective judgment and operating methods have a particularly significant impact on the final result during calibration. This situation makes achieving fully digital calibration exceptionally difficult. These problems not only negatively impact the accuracy of digital calibration of chamfering measuring tools but also reduce the efficiency and precision of the calibration process.

[0032] To address the aforementioned problems, this invention proposes an innovative solution: calibrating chamfering measuring tools using digital methods to significantly improve the accuracy of measurement results. This invention successfully overcomes the shortcomings of traditional manual calibration methods by innovatively employing strain sensors to detect the gap size and providing specific numerical feedback through precise measurement of strain deformation. By observing and analyzing the feedback voltage values, it is possible to accurately determine whether the gap meets the acceptable standard, and these results are directly displayed on a screen in front of the user. This method effectively avoids errors that may occur during manual calculations, thereby significantly improving the accuracy of the calibration process. Furthermore, the introduction of a display screen ensures that data is presented to the user accurately, further reducing errors caused by incorrect readings.

[0033] In terms of the structural design of this invention, we cleverly utilize the characteristics of strain sensors during deformation to provide feedback on the gap size. Furthermore, by combining this with a microcontroller and controller, we achieve digital calibration of the chamfering measuring tool. This design not only significantly improves the accuracy and efficiency of the calibration process, but also makes the structure of this invention relatively simple, easy to operate and carry. Using this invention can significantly improve the accuracy and efficiency of chamfering measuring tool calibration. By digitally calibrating the chamfering measuring tool, we not only improve calibration accuracy but also save a significant amount of human resources, effectively reducing labor costs and time consumption, thereby greatly improving the efficiency of calibration work. Attached Figure Description

[0034] Figure 1 A schematic diagram of a digital calibration method for chamfering measuring tools;

[0035] Figure 2 A spindle view for a digital calibration device used in chamfering measuring tools;

[0036] Figure 3 Auxiliary isometric drawing for a digital calibration device used in chamfering measurement tools;

[0037] Figure 4 This is a top view of the digital calibration device used for chamfering measurement tools.

[0038] The components include: 1. Actuation cover, 2. Main body, 3. Display screen, 4. Alarm, 5. Input component, 6. Switch button, 7. Reset button, 8. HDMI port, 9. HTTP port, 10. Connecting screw, 11. Strain sensor, 12. Bearing, 13. Calibration body, 14. Drive shaft, 15. Rotation servo motor, 16. Strain signal conditioning module, 17. Data acquisition module, 18. Microcontroller, and 19. Controller. Detailed Implementation

[0039] The present application is described in detail below with reference to the embodiments, but the present application is not limited to these embodiments.

[0040] Example 1

[0041] A device for digital calibration of chamfering measuring tools, comprising a mechanical structure and a sensing and control structure;

[0042] The mechanical structure consists of an actuator cover 1, a main body 2, an HDMI port 8, an HTTP port 9, connecting screws 10, bearings 12, a calibration body 13, a transmission shaft 14, and a rotation servo motor 15.

[0043] The sensing and control structure consists of a display screen 3, an alarm 4, an input component 5, a switch button 6, a reset button 7, a strain sensor 11, a strain signal conditioning module 16, a data acquisition module 17, a microcontroller 18, and a controller 19.

[0044] The actuator cover 1 is a protective component. The actuator cover 1 is installed on the upper end of the main body 2. A rotary servo motor 15 is installed inside the actuator cover 1, which can protect the rotary servo motor 15 installed inside and play the role of protecting the rotary servo motor 15.

[0045] The main body 2 is the main load-bearing component. The upper part of the main body 2 is equipped with most of the components such as the actuator cover 1 and the rotary servo motor 15, which serve as support and placement.

[0046] The HDMI port 8 is a display expansion component. The HDMI port 8 is installed on the left side of the main body 2 and is distributed vertically with the HTTP port 9. The HDMI port 8 can be directly connected to the digital display device using an adapter cable, so that the display content of the display screen 3 can be directly transmitted to the digital display device through the HDMI port 8, thereby realizing the extended display of display data.

[0047] The HTTP port 9 is a program upgrade component. The HTTP port 9 is installed on the left side of the host body 2. Program upgrades and data maintenance are performed through the HTTP port 9 to ensure that the device always maintains high-performance operation.

[0048] The connecting screw 10 is the main connecting component. The actuator cover 1 and other components are installed on the upper end of the main body 2 by the connecting screw 10. The operation is simple and the connection is tight, which facilitates subsequent disassembly and maintenance.

[0049] The bearing 12 is a transmission protection component. The smooth surfaces of the inner and outer rings of the bearing 12 are used to connect the transmission shaft and the support to reduce friction and protect the connection between the output shaft of the rotary servo motor 15 and the transmission shaft 14 and the support.

[0050] The calibration body 13 is an angle support component that can adjust its relative position with the main body 2 according to the rotation of the servo motor 15, so as to provide the required verification angle for the device.

[0051] The drive shaft 14 is a transmission component. The rotation of the rotary servo motor 15 can be transmitted to the calibration body 13 through the drive shaft 14, which drives the calibration body 13 to the required position, thereby achieving the purpose of calibration and testing of the chamfering measuring tool.

[0052] The rotary servo motor 15 is a transmission power component. The rotary servo motor 15 can drive the transmission shaft 14 to rotate, and then drive the calibration body 13 to rotate through the transmission shaft 14, so as to adjust its angle and facilitate digital calibration and testing of the chamfering measuring tool.

[0053] The display screen 3 is a result display component. The display screen 3 is set on the upper surface of the main body 2 and is used to display the calibration results, so that the calibration results are displayed more intuitively.

[0054] The alarm 4 is an alarm warning component. The alarm 4 is installed on the main body 2. When the calibration result does not meet the requirements (the output voltage is not in the range of 0.1V to 0.15V), the alarm 4 will sound an alarm under the action of the controller 19 to prevent calibration problems caused by human error from being missed.

[0055] The input component 5 is an input determination unit. When using the device to perform digital calibration of the chamfering measuring tool, the calibration angle is input using the input component 5, which facilitates the control of the angle as needed and improves the reliability of calibration.

[0056] The switch button 6 is a switch component used to realize the power on and power off of the device. The switch button 6 can be used to conveniently power on and off the device, making the chamfering measuring tool digital calibration tool more convenient to use.

[0057] The reset button 7 is a data reset component. The reset button 7 is installed on the main body 2 and can be reset to perform a second calibration after the first calibration is completed. The second calibration performed by the reset button 7 provides accuracy guarantee for the device.

[0058] The strain sensor 11 is a sensing component that can indirectly provide feedback on the gap size through the deformation of the strain sensor 11. By adjusting the placement angle between the transmission shaft 14 and the calibration body 13, the chamfering measuring tool is brought into contact with the strain sensor 11 for detection. The strain signal conditioning module 16 is used to condition the strain signal, converting it into a voltage signal. The microcontroller 18 processes the voltage signal to form gap data, which is then displayed on the display screen 3 to determine whether the gap is qualified or not.

[0059] The strain signal conditioning module 16 is a signal conditioning component. The strain signal conditioning module 16 is installed inside the main body 2. It can condition the strain signal, convert the strain signal into a voltage signal, and transmit the voltage signal to the microcontroller 18, so that the microcontroller 18 and the controller 19 can process the data.

[0060] The data acquisition module 17 is a strain signal acquisition component. The data acquisition module 17 can acquire the strain signal from the strain sensor 11 and transmit it to the strain signal conditioning module 16, which then conditions and processes the strain signal.

[0061] The microcontroller 18 is a signal processing and decision-making component. The microcontroller 18 is installed inside the main body 2 by connecting screws and receives the voltage signal conditioned by the strain signal conditioning module 16. After processing by the microcontroller 18, the gap data and compliance judgment results made according to the logical relationship are displayed on the display screen 3. The microcontroller 18 issues control commands to the controller 19 according to the logical results, thus playing the role of initiating control commands.

[0062] The controller 19 is a control command execution component. The microcontroller 18 uses the calibration angle entered by the input component 5 to issue control commands to the controller 19 according to the logical relationship. After receiving the command, the controller 19 drives the rotation servo motor 15 to work. The rotation servo motor 15 drives the transmission shaft 14 to rotate, which in turn drives the calibration body 13 to rotate synchronously. The placement angle of the calibration body 13 is adjusted so that it rotates to the corresponding position with the chamfer measuring tool to be calibrated. The tool to be calibrated is placed on the upper surface of the strain sensor 11 so that it contacts the strain sensor 11. At this time, the strain sensor 11 provides feedback on the gap size through strain. If it is unqualified, the controller 19 drives the alarm 4 to take corresponding actions.

[0063] The specific work process is as follows:

[0064] Step 1: Before use, inspect the calibration device for appearance and conformity labels. Check whether the calibration device has complete calibration labels and whether the appearance is intact. If it is complete and intact, proceed to the next step.

[0065] Step 2: Press the power button 6 to turn on the digital calibration device, check the continuity of the calibration device circuit, and ensure that the calibration device is functioning properly.

[0066] Step 3: Input the required angle information through input component 5 according to the requirements, and use the rotation servo motor 15 to drive the transmission shaft 14 and the calibration body 13 to adjust the calibration body 13 to the required position;

[0067] Step 4: Place the chamfering measuring tool to be calibrated on the calibrator 13 and observe the data displayed on the display screen 3 and the pass / fail judgment status;

[0068] Step 5: When the display screen 3 shows a pass / fail judgment and the chamfering measuring tool fails, the alarm 4 will emit a flashing red light as a warning;

[0069] Step 6: Press the reset button 7 to clear the alarm information of alarm 4, and repeat step 4 to retest in order to increase the reliability of calibration;

[0070] Step 7: After calibrating the aperture perpendicularity measuring tools in sequence, press the power button 6 to turn off the power to the entire calibration device, and put the calibration device back in its original position to complete the calibration and verification work.

[0071] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions made by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A device for digital calibration of chamfering measuring tools, characterized in that, It consists of a mechanical structure and a sensing and control structure; The mechanical structure consists of an actuator cover (1), a main body (2), an HDMI port (8), an HTTP port (9), connecting screws (10), a bearing (12), a calibration body (13), a transmission shaft (14), and a rotation servo motor (15); The sensing and control structure consists of a display screen (3), an alarm (4), an input component (5), a switch button (6), a reset button (7), a strain sensor (11), a strain signal conditioning module (16), a data acquisition module (17), a microcontroller (18), and a controller (19).

2. The apparatus for digital calibration of chamfering measuring tools according to claim 1, characterized in that, The actuator cover (1) is a protective component. The actuator cover (1) is installed on the upper end of the main body (2). A rotary servo motor (15) is installed inside the actuator cover (1). The rotary servo motor (15) installed inside the actuator cover (1) can be protected, thus protecting the rotary servo motor (15). The main body (2) is the main load-bearing component. The upper part of the main body (2) is equipped with most of the components such as the actuator cover (1) and the rotation servo motor (15), which play a supporting and placement role.

3. The apparatus for digital calibration of chamfering measuring tools according to claim 2, characterized in that, The HDMI port (8) is a display expansion component. The HDMI port (8) is installed on the left side of the host body (2) and is distributed vertically with the HTTP port (9). The HDMI port (8) can be directly connected to the digital display device using an adapter cable, and the display content of the display screen (3) can be directly transmitted to the digital display device through the HDMI port (8) to realize the extended display of display data. The HTTP port (9) is a program upgrade component. The HTTP port (9) is installed on the left side of the host body (2). Program upgrades and data maintenance are performed through the HTTP port (9) to ensure that the device always maintains high performance.

4. The apparatus for digital calibration of chamfering measuring tools according to claim 3, characterized in that, The connecting screw (10) is the main connecting component. The actuator cover (1) and other components are installed on the upper end of the main body (2) by the connecting screw (10). The operation is simple and the connection is tight, which facilitates subsequent disassembly and maintenance. The bearing (12) is a transmission protection component. The smooth surfaces of the inner and outer rings of the bearing (12) are used to connect the transmission shaft and the support to reduce friction and protect the connection between the output shaft of the rotating servo motor (15) and the transmission shaft (14) and the support. The calibration body (13) is an angle support component that can adjust its relative position with the main body (2) according to the rotation of the rotation servo motor (15) to provide the required verification angle for the device.

5. The apparatus for digital calibration of chamfering measuring tools according to claim 4, characterized in that, The drive shaft (14) is a transmission component. The rotation of the rotary servo motor (15) can be transmitted to the calibration body (13) by the drive shaft (14), which drives the calibration body (13) to the required position, so as to achieve the purpose of calibration and testing of the chamfer measuring tool. The rotating servo motor (15) is a transmission power component. The rotating servo motor (15) can drive the transmission shaft (14) to rotate, and then drive the calibration body (13) to rotate through the transmission shaft (14) so ​​that the angle can be adjusted, which facilitates the digital calibration and testing of the chamfering measuring tool.

6. The apparatus for digital calibration of chamfering measuring tools according to claim 5, characterized in that, The display screen (3) is a result display component. The display screen (3) is set on the upper surface of the main body (2) and is used to display the calibration results, so that the calibration results can be displayed more intuitively. The alarm (4) is an alarm warning component. The alarm (4) is installed on the main body (2). When the calibration result does not meet the requirements, the alarm (4) will sound an alarm under the action of the controller (19) to prevent calibration problems caused by human error from being missed.

7. The apparatus for digital calibration of chamfering measuring tools according to claim 6, characterized in that, The input component (5) is an input determination unit. When using the device to perform digital calibration of the chamfer measuring tool, the calibration angle is input using the input component (5), which facilitates the control of the angle as needed and improves the reliability of calibration. The switch button (6) is a switch component used to realize the power on and power off of the device. The switch button (6) can be used to conveniently power on and power off the device, making the chamfering measuring tool digital calibration tool more convenient to use. The reset button (7) is a data reset component. The reset button (7) is installed on the main body (2). It can reset and perform a second calibration after the first calibration is completed. The second calibration performed by the reset button (7) provides accuracy guarantee for the device.

8. The apparatus for digital calibration of chamfering measuring tools according to claim 7, characterized in that, The strain sensor (11) is a sensing component. The size of the gap can be indirectly fed back by the deformation of the strain sensor (11). By adjusting the placement angle between the transmission shaft (14) and the calibration body (13), the chamfer measuring tool is brought into contact with the strain sensor (11) for detection. The strain signal is conditioned by the strain signal conditioning module (16) and converted into a voltage signal. The microcontroller (18) processes the voltage signal to form a gap data display on the display screen (3) to determine whether it is qualified or not.

9. The apparatus for digital calibration of chamfering measuring tools according to claim 8, characterized in that, The strain signal conditioning module (16) is a signal conditioning component. The strain signal conditioning module (16) is installed inside the main body (2). It can condition the strain signal, convert the strain signal into a voltage signal, and transmit the voltage signal to the microcontroller (18) so that the microcontroller (18) and the controller (19) can process the data. The data acquisition module (17) is a strain signal acquisition component. The data acquisition module (17) can acquire the strain signal from the strain sensor (11) and transmit it to the strain signal conditioning module (16), which then conditions and processes the strain signal.

10. The apparatus for digital calibration of a chamfering measuring tool according to claim 9, characterized in that, The microcontroller (18) is a signal processing and decision-making component. The microcontroller (18) is installed inside the main body (2) by connecting screws and receives the voltage signal conditioned by the strain signal conditioning module (16). After processing by the microcontroller (18), the gap data and compliance judgment results made according to the logical relationship are displayed on the display screen (3), and control instructions are issued to the controller (19) according to the logical results, which plays the role of initiating control commands. The controller (19) is a control command execution component. The microcontroller (18) uses the calibration angle entered by the input component (5) to issue control commands to the controller (19) according to the logical relationship. After receiving the command, the controller (19) drives the rotation servo motor (15) to work. The rotation servo motor (15) drives the transmission shaft (14) to rotate, which in turn drives the calibration body (13) to rotate synchronously. The placement angle of the calibration body (13) is adjusted so that it rotates to the corresponding position with the chamfer measuring tool to be calibrated. The tool to be calibrated is placed on the upper surface of the strain sensor (11) so that it contacts the strain sensor (11). At this time, the strain sensor (11) uses strain to feedback the gap size. If it is not qualified, the controller (19) drives the alarm (4) to take corresponding actions.

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