Circular saw blade stress double-means synchronous detection device and method

Abstract

The invention discloses a circular saw blade stress double-means synchronous detection device and method. The device comprises a fixed support, a jacking device, a displacement detection device, a rotating assembly and a data processing unit. The detachable flange plate of the fixed support is matched with circular saw blades of different specifications. The jacking device adjusts the position of a jacking air cylinder through a sliding rail to apply load. The displacement detection device collects transverse displacement deformation data by using an XY-axis moving platform and a laser displacement sensor; the rotating assembly realizes circumferential rotation of the circular saw blade; and the data processing unit receives the data, calculates polar coordinates, identifies key parameters and outputs detection results of the'jacking method 'and the'angle method'. The detection method comprises the steps of circular saw blade fixing, top pressure loading, rotation detection, data processing and result output. According to the invention, two kinds of detection can be carried out synchronously, the detection efficiency and accuracy are improved, the mutual conversion of detection results is realized, different standard requirements are met, and an efficient and accurate solution is provided for the stress detection of the circular saw blade.

Description

Technical Field

[0001] The invention relates to a dual-means synchronous detection device and method for circular saw blade stress, belonging to the technical field of saw blade stress detection. Background Art

[0002] Circular saw blades are common cutting tools used in a wide range of industries, including woodworking, metalworking, and stone processing. Their cutting performance and service life depend largely on the stress distribution within the blade. Proper stress distribution improves cutting accuracy, reduces vibration and noise during cutting, and extends the blade's service life. However, an inappropriate stress distribution can cause deformation and cracking of the blade during cutting, seriously impacting cutting quality and efficiency, and potentially even leading to safety accidents.

[0003] Currently, the stress detection of circular saw blades mainly adopts a single detection method, such as the "top pressure method" or the "angle method". The "top pressure method" applies a certain pressure to the edge of the circular saw blade and measures the lateral displacement deformation at a phase angle of 90° from the top pressure point on the same circumference as the top pressure position to evaluate the stress state inside the circular saw blade. The "angle method" also measures the lateral displacement deformation on the circumference of the top pressure position of the circular saw blade while applying a load on the edge. The final measurement result is the value of the phase angle φ at the position where the lateral displacement deformation is zero from the top pressure point. However, this method requires high accuracy of the measuring equipment.

[0004] Furthermore, existing testing devices have limitations. For example, some devices are only suitable for circular saw blades of specific specifications and lack versatility. During the testing process, the movement and positioning of the measuring equipment are not flexible enough, making it difficult to accurately measure the lateral displacement and deformation of the circular saw blade at different locations. Data processing and analysis capabilities are limited, making it impossible to quickly and accurately obtain test results. Furthermore, the inability to establish a correspondence between the results of different testing methods hinders a comprehensive and in-depth assessment of the stress state of the circular saw blade. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the present invention provides a dual-means synchronous detection device and method for circular saw blade stress, which solves the problems that traditional technology relies on manual labor, has poor precision, low efficiency, and cannot meet dual-standard detection.

[0006] The present invention solves the above-mentioned technical problem with the following technical solution: A dual-means synchronous detection device for circular saw blade stress, comprising:

[0007] A fixed bracket, used to fix the circular saw blade to be tested, wherein the fixed bracket is provided with a detachable flange, and the size of the flange is adapted to the circular saw blade of set specifications;

[0008] A pressing device, comprising a slide rail and a pressing cylinder, wherein the slide rail is used to adjust the ejection position of the pressing cylinder to apply a load at a specified position on the edge of the circular saw blade;

[0009] a displacement detection device comprising an XY-axis moving platform and a laser displacement sensor, wherein the XY-axis moving platform is powered by a first servo motor and a second servo motor, and drives the laser displacement sensor to move horizontally above the circular saw blade to collect lateral displacement deformation data of the circular saw blade surface;

[0010] a rotating assembly comprising a third servo motor, a gear transmission mechanism, a thrust cylindrical roller bearing, and a deep groove ball bearing, wherein the third servo motor drives the circular saw blade support column to rotate via the gear transmission mechanism, and the support column is connected to the base via the thrust cylindrical roller bearing and the deep groove ball bearing to achieve circumferential rotation of the circular saw blade;

[0011] A data processing unit is electrically connected to the first servo motor, the second servo motor, the third servo motor, and the laser displacement sensor. The data processing unit receives displacement data and rotation angle data, calculates the polar coordinates (θ, R) of the specified measurement point of the circular saw blade, identifies the lateral displacement deformation of the circular saw blade at the phase angle position and the phase angle at which the lateral displacement deformation is 0, and outputs the "top pressure method" and "angle method" detection results.

[0012] As a preferred solution of the dual-means synchronous detection device for circular saw blade stress, the detachable flange is connected to the center hole of the circular saw blade through the support column, and the flange of a specified diameter is replaced to adapt to the circular saw blade of a specified inner diameter.

[0013] As a preferred solution for the dual-means synchronous detection device for circular saw blade stress, the slide rail is a linear guide rail, the slide rail is arranged radially along the circular saw blade, the top pressure cylinder is installed on the slide rail, and the top pressure cylinder adjusts the top pressure position by sliding a slider on the slide rail.

[0014] As a preferred embodiment of the dual-means synchronous detection device for circular saw blade stress, the XY-axis movable platform includes an X-axis guide rail and a Y-axis guide rail perpendicular to each other, the laser displacement sensor is mounted on a slider of the X-axis guide rail, the first servo motor is equipped with a first synchronous belt, the second servo motor is equipped with a second synchronous belt, the first synchronous belt is equipped with a first synchronous pulley, and the second synchronous belt is equipped with a second synchronous pulley;

[0015] The first servo motor drives the laser displacement sensor to move in the X-axis direction through the first synchronous belt and the first synchronous pulley, and the second servo motor drives the laser displacement sensor to move in the Y-axis direction through the second synchronous belt and the second synchronous pulley.

[0016] As a preferred solution of the dual-means synchronous detection device for circular saw blade stress, the data processing unit is equipped with a coordinate conversion module, which converts the rectangular coordinates (X, Y) collected by the laser displacement sensor into polar coordinates (θ, R):

[0017]

[0018] Where X is the horizontal coordinate of the laser displacement sensor measurement point in the coordinate system with the center of the circular saw blade as the origin and the radius of the top pressure position as the X-axis, and Y is the vertical coordinate;

[0019] The data processing unit further includes a threshold recognition module, which recognizes the lateral displacement deformation of the circular saw blade at a phase angle position and the phase angle at which the lateral displacement deformation is zero.

[0020] As a preferred solution of the dual-means synchronous detection device for circular saw blade stress, it also includes a human-computer interaction interface, which displays the detection result values ​​of the "top pressure method" and the detection result values ​​of the "angle method".

[0021] The present invention also provides a dual-means synchronous detection method for circular saw blade stress, comprising the following steps:

[0022] Fix the circular saw blade: fix the circular saw blade to the support column through the detachable flange, and ensure that the center of the circular saw blade coincides with the rotation center of the rotating assembly;

[0023] Top pressure loading: adjust the top pressure cylinder to move along the slide rail to the specified position on the edge of the circular saw blade and apply the preset load;

[0024] Rotation detection: drives the third servo motor of the rotating assembly to rotate the circular saw blade in the circumferential direction, and at the same time controls the first and second servo motors of the XY-axis moving platform to move the laser displacement sensor along the circumference of the circular saw blade to collect lateral displacement deformation data at set phase points within the entire circumference;

[0025] Data processing: The data processing unit converts the rectangular coordinates (X, Y) collected by the laser displacement sensor into polar coordinates (θ, R), and identifies the displacement value at θ = 90° and the phase angle at which the displacement is 0;

[0026] Result output: Synchronously output the “top pressure method” test results and the “angle method” test results, and establish a corresponding relationship between the “top pressure method” test results and the “angle method” test results.

[0027] As the preferred solution for the dual-means synchronous detection method of circular saw blade stress, when collecting lateral displacement deformation data at set phase points within the entire circumference, the collected phase point range is 0°-360°, and the number of collected data points is:

[0028]

[0029] Where Δθ is the sampling interval of the laser displacement sensor.

[0030] As the preferred solution for the dual-means synchronous detection method of circular saw blade stress, when the collected rectangular coordinates (X, Y) are converted into polar coordinates (θ, R):

[0031]

[0032] Where X is the horizontal coordinate of the laser displacement sensor measurement point in the coordinate system with the center of the circular saw blade as the origin and the radius of the top pressure position as the X-axis, and Y is the vertical coordinate.

[0033] As a preferred solution for the dual-means synchronous detection method of circular saw blade stress, the detection method of the "top pressure method" is as follows: the laser displacement sensor (5) moves to a position with a phase angle of 90° from the top pressure point, and the circular saw blade (15) rotates one circle to measure the average lateral displacement deformation at the position, and obtains the result D of the "top pressure method".

[0034] As a preferred solution for the dual-means synchronous detection method of circular saw blade stress, the detection method of the "angle method" is as follows: the circular saw blade (15) remains stationary, and the laser displacement sensor (5) is controlled by a servo motor to rotate one circle on the same circumference of the top pressure position, and the lateral displacement deformation data of one circle are measured. The data processing unit (14) screens the collected lateral displacement deformation data, identifies the position where the lateral displacement deformation is 0, and obtains the value of the phase angle corresponding to this point as the result of the "angle method".

[0035] The beneficial effects of the present invention are as follows:

[0036] First, by using multiple servo motors to collaboratively drive the circular saw blade to rotate and the sensor to move, full-circle automated detection is achieved. Compared with the traditional method that relies on manual operation, it greatly shortens the detection time, improves the efficiency of the detection process, and meets the needs of large-scale production detection.

[0037] Second, the laser displacement sensor, combined with coordinate conversion calculations, can accurately collect and process the lateral displacement deformation data of the circular saw blade surface. The precision bearings and gear transmission of the rotating assembly ensure the rotation accuracy of the circular saw blade, making the "top pressure method" and "angle method" detection results more accurate and reliable.

[0038] Third, the detachable flange can be replaced with different sizes to accommodate circular saw blades of various specifications; the slide rail of the top pressure device can flexibly adjust the top pressure position, which is suitable for different stress detection needs and reduces the cost of enterprises purchasing multiple equipment to detect different circular saw blades.

[0039] Fourth, the test results of the "top pressure method" and "angle method" can be obtained at the same time, and the data processing unit can establish a corresponding relationship between the two, which is convenient for enterprises to carry out production and quality assessment according to different standards and eliminate the obstacles caused by differences in different testing standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0041] The structures, proportions, sizes, etc. illustrated in this specification are intended only to complement the contents disclosed herein and to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in sizes, without affecting the efficacy and objectives of the present invention, shall still fall within the scope of the technical contents disclosed herein.

[0042] Figure 1 Schematic diagram of the three-dimensional structure of a dual-means synchronous detection device for circular saw blade stress provided in an embodiment of the present invention;

[0043] Figure 2 A schematic side view of a dual-means synchronous detection device for circular saw blade stress provided in an embodiment of the present invention;

[0044] Figure 3 It is a schematic top view of a dual-means synchronous detection device for circular saw blade stress provided in an embodiment of the present invention;

[0045] Figure 4 A cross-sectional schematic diagram of a dual-means synchronous detection device for circular saw blade stress provided in an embodiment of the present invention;

[0046] Figure 5 Schematic diagram of the hardware architecture of the dual-means synchronous detection device for circular saw blade stress provided in an embodiment of the present invention;

[0047] Figure 6 Schematic diagram of the flow chart of the dual-means synchronous detection method for circular saw blade stress provided in an embodiment of the present invention.

[0048] In the figure, 1. fixed bracket; 2. flange; 3. slide rail; 4. top pressure cylinder; 5. laser displacement sensor; 6. first servo motor; 7. second servo motor; 8-1. first synchronous belt; 8-2. second synchronous belt; 9. gear transmission mechanism; 10. thrust cylindrical roller bearing; 11. deep groove ball bearing; 21-1. first synchronous pulley; 12-2. second synchronous pulley; 13. base; 14. data processing unit; 15. circular saw blade; 16. human-computer interface; 17. third servo motor; 18. support column; 19. X-axis guide rail; 20. Y-axis guide rail; 21. XY-axis moving platform. DETAILED DESCRIPTION

[0049] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0051] Example 1

[0052] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 The embodiment of the present invention provides a dual-means synchronous detection device for stress of a circular saw blade 15, comprising:

[0053] Fixed bracket 1: used to fix the circular saw blade 15 to be tested. The fixed bracket 1 is provided with a removable flange 2, and the size of the flange 2 is adapted to the set specifications of the circular saw blade 15. The circular saw blade 15 needs to be stably fixed during testing, and the fixed bracket 1 and the removable flange 2 work together. Since the specifications of the circular saw blades 15 are diverse and the inner diameters of different circular saw blades 15 are different, the design of the removable flange 2 can be replaced by flanges 2 of different diameters so that it is tightly connected to the center hole of the circular saw blade 15, ensuring that the circular saw blade 15 will not shake or deviate during the testing process, thereby ensuring the accuracy and stability of the test. This design improves the versatility of the detection device and is applicable to the detection needs of a variety of circular saw blades 15 of different specifications.

[0054] Top-pressing device: includes a slide rail 3 and a top-pressing cylinder 4, and the slide rail 3 is used to adjust the ejection position of the top-pressing cylinder 4 to apply a load at a specified position on the edge of the circular saw blade 15. According to the requirements of the stress detection of the circular saw blade 15, it is necessary to apply a load at a set position on its edge. The slide rail 3 adopts a linear guide rail and is arranged along the radial direction of the circular saw blade 15 to provide a precise moving track for the top-pressing cylinder 4. The top-pressing cylinder 4 is installed on the slider of the slide rail 3. By sliding the slider on the slide rail 3, the position of the top-pressing cylinder 4 on the edge of the circular saw blade 15 can be flexibly and accurately adjusted, so that loads can be applied at different specified positions to meet the diverse demands of different testing standards and experimental requirements for loading positions, and ensure the comprehensiveness and accuracy of the detection.

[0055] The displacement detection device includes an XY-axis mobile platform 21 and a laser displacement sensor 5. Powered by a first servo motor 6 and a second servo motor 7, the XY-axis mobile platform 21 drives the laser displacement sensor 5 horizontally above the circular saw blade 15 to collect lateral displacement data on the surface of the circular saw blade 15. The lateral displacement data at different locations on the surface of the circular saw blade 15 after being subjected to a compressive load is a key indicator for analyzing its stress state. The X-axis guide rail 19 and the Y-axis guide rail 20 of the XY-axis mobile platform 21 are perpendicular to each other, forming a two-dimensional moving space. The first servo motor 6 is equipped with a first synchronous belt 8-1 and a first synchronous pulley 21-1, while the second servo motor 7 is equipped with a second synchronous belt 8-2 and a second synchronous pulley 12-2. When the first servo motor 6 is activated, the first synchronous belt 8-1 and the first synchronous pulley 21-1 drive the laser displacement sensor 5 in the X-axis direction. Similarly, the second servo motor 7 drives the laser displacement sensor 5 in the Y-axis direction. In this way, the laser displacement sensor 5 can be flexibly moved above the circular saw blade 15 to accurately collect the lateral displacement deformation data at different positions, thereby ensuring the comprehensiveness and accuracy of data collection.

[0056] The rotating assembly includes a third servo motor 17, a gear transmission mechanism 9, a thrust cylindrical roller bearing 10, and a deep groove ball bearing 11. The third servo motor 17 drives the support column 18 of the circular saw blade 15 through the gear transmission mechanism 9. The support column 18 is connected to the base 13 via the thrust cylindrical roller bearing 10 and the deep groove ball bearing 11, achieving circumferential rotation of the circular saw blade 15. To comprehensively monitor the stress state of the circular saw blade 15, it is necessary to obtain data at different circumferential positions of the circular saw blade 15. The third servo motor 17 provides power, which is transmitted to the support column 18 of the circular saw blade 15 through the gear transmission mechanism 9. The gear transmission mechanism 9 achieves a precise transmission ratio, ensuring stable and uniform rotation of the support column 18 of the circular saw blade 15. The thrust cylindrical roller bearing 10 and the deep groove ball bearing 11 are used in combination, which can withstand both the axial force and the radial force of the circular saw blade 15, reduce the friction during the rotation of the support column 18, ensure the stability of the circular saw blade 15 during the rotation process, and enable the laser displacement sensor 5 to accurately collect the lateral displacement deformation data within the entire circumference.

[0057] The data processing unit 14 is electrically connected to the first servo motor 6, the second servo motor 7, the third servo motor 17, and the laser displacement sensor 5. The data processing unit 14 receives the displacement data and the rotation angle data, calculates the polar coordinates (θ, R) of the specified measurement point of the circular saw blade 15, and identifies the lateral displacement deformation D of the circular saw blade 15 at a position on the circumference of the top pressing position and at a phase angle of 90° from the top pressing position, and the phase angle of the position on the circumference of the top pressing position where the lateral displacement deformation is 0 from the top pressing position. The output of the "top pressure method" and "angle method" test results. The operating data of the first servo motor 6, the second servo motor 7, and the third servo motor 17, as well as the displacement data collected by the laser displacement sensor 5, are transmitted in real time to the data processing unit 14. The coordinate conversion module, based on trigonometric principles, converts the rectangular coordinates (X, Y) collected by the laser displacement sensor 5 into polar coordinates (θ, R) to facilitate subsequent processing and analysis.

[0058] In this embodiment, the detachable flange 2 is connected to the center hole of the circular saw blade 15 through the support column 18, and the flange 2 of a specified diameter is replaced to adapt to the circular saw blade 15 of a specified inner diameter.

[0059] Specifically, circular saw blades 15 of different specifications have different center hole inner diameters. The support column 18, serving as the intermediate component connecting the flange 2 and the circular saw blade 15, is designed to accommodate flanges 2 of varying diameters. By replacing the flange 2 with one that matches the inner diameter of the center hole of the circular saw blade 15 and attaching it to the support column 18, and then mounting the circular saw blade 15 on the flange 2, the center of the circular saw blade 15 is ensured to coincide with the rotation center of the entire detection device, ensuring the stability of the circular saw blade 15 during rotation testing and the accuracy of the test results.

[0060] In this embodiment, the slide rail 3 is a linear guide rail, the slide rail 3 is arranged radially along the circular saw blade 15, the top pressure cylinder 4 is installed on the slide rail 3, and the top pressure cylinder 4 slides on the slide rail 3 through a slider to adjust the top pressure position.

[0061] Specifically, the linear guide features high precision, high rigidity, and low friction. Its placement along the radial direction of the circular saw blade 15 ensures that the movement of the pressure cylinder 4 aligns with the radius of the circular saw blade 15. The pressure cylinder 4 is mounted on a slider, and the fit between the slider and the slide rail 3 allows the pressure cylinder 4 to slide smoothly along the slide rail 3. By controlling the movement of the slider, the position of the pressure cylinder 4 relative to the edge of the circular saw blade 15 can be precisely adjusted, ensuring precise and controllable load application, meeting the stringent requirements of various testing standards and experiments for loading position.

[0062] In this embodiment, the XY-axis moving platform 21 includes an X-axis guide rail 19 and a Y-axis guide rail 20 that are perpendicular to each other. The laser displacement sensor 5 is installed on the slider of the X-axis guide rail 19. The first servo motor 6 is equipped with a first synchronous belt 8-1, and the second servo motor 7 is equipped with a second synchronous belt 8-2. The first synchronous belt 8-1 is equipped with a first synchronous pulley 21-1, and the second synchronous belt 8-2 is equipped with a second synchronous pulley 12-2. The first servo motor 6 drives the laser displacement sensor 5 to move in the X-axis direction through the first synchronous belt 8-1 and the first synchronous pulley 21-1, and the second servo motor 7 drives the laser displacement sensor 5 to move in the Y-axis direction through the second synchronous belt 8-2 and the second synchronous pulley 12-2.

[0063] Specifically, the X-axis guide rail 19 and the Y-axis guide rail 20 are perpendicular to each other to form a two-dimensional moving plane, providing a precise moving track for the laser displacement sensor 5. The servo motor has high-precision speed and position control capabilities. When the first servo motor 6 is running, it drives the first synchronous pulley 21-1 to rotate, and the first synchronous pulley 21-1 transmits power to the laser displacement sensor 5 through the first synchronous belt 8-1, causing it to move in the X-axis direction; similarly, the second servo motor 7 drives the second synchronous pulley 12-2, which drives the laser displacement sensor 5 to move in the Y-axis direction through the second synchronous belt 8-2. The combination of the synchronous belt and the synchronous pulley can ensure the accuracy and stability of power transmission, realize the precise movement of the laser displacement sensor 5 in the X and Y axis directions, and thus accurately collect the lateral displacement deformation data at different positions on the surface of the circular saw blade 15.

[0064] In this embodiment, the data processing unit 14 is configured with a coordinate conversion module, which converts the rectangular coordinates (X, Y) collected by the laser displacement sensor 5 into polar coordinates (θ, R):

[0065]

[0066] Wherein, X is the horizontal coordinate of the measuring point of the laser displacement sensor 5 in the coordinate system with the center of the circular saw blade 15 as the origin and the radius of the top pressure position as the X axis, and Y is the vertical coordinate.

[0067] Specifically, the displacement data (X, Y) collected in the rectangular coordinate system is not intuitive enough for analyzing the angle and radial information of the stress state of the circular saw blade 15. According to the conversion principle between polar coordinates and rectangular coordinates, the inverse tangent function is used to calculate the angle θ, and the polar diameter R is calculated by the Pythagorean theorem. After converting the rectangular coordinates to polar coordinates, it is more convenient to analyze the angle and distance relationship of each point on the circular saw blade 15 relative to the top pressure position, which helps to accurately identify the lateral displacement deformation of the circular saw blade 15 at different phase angle positions, and provide a more suitable data form for the calculation of the "top pressure method" and "angle method" test results.

[0068] In this embodiment, the data processing unit 14 further includes a threshold recognition module, which recognizes the lateral displacement deformation of the circular saw blade 15 at a phase angle position and the phase angle at which the lateral displacement deformation is zero.

[0069] Specifically, in the stress detection of the circular saw blade 15, the lateral displacement deformation at the phase angle position and the phase angle at which the lateral displacement deformation is 0 are important detection indicators. The threshold recognition module screens and analyzes the large amount of displacement data collected by setting certain judgment conditions (such as the range of displacement variation, data fluctuation threshold, etc.). When the displacement data meets specific conditions, the phase angle and lateral displacement deformation corresponding to the data are determined, thereby accurately identifying the key displacement information of the circular saw blade 15 at different phase angles, providing data support for the acquisition of the "top pressure method" and "angle method" detection results.

[0070] In this embodiment, a human-computer interaction interface 16 is also included, and the human-computer interaction interface 16 displays the detection result value of the "top pressure method" and the detection result value of the "angle method".

[0071] Specifically, the test results of the "top pressure method" and "angle method" are stored as data in the data processing unit 14. The human-computer interaction interface 16 provides operators with intuitive access to these test results. Visualizing the test data in the data processing unit 14 allows operators to directly read the test results without the need for complex data interpretation. This also facilitates comparative analysis of test results from different circular saw blades 15, allowing operators to timely understand the stress state of the circular saw blades 15 and provide a basis for decision-making regarding production and quality control of the circular saw blades 15.

[0072] The workflow of the present invention is as follows:

[0073] First, prepare for testing: Select a suitable removable flange 2 based on the inner diameter of the circular saw blade 15 to be tested and install it on the support column 18 of the fixed bracket 1. Then, secure the circular saw blade 15 to the installed flange 2 through the center hole, ensuring that the center of the circular saw blade 15 precisely aligns with the rotation center of the rotating assembly. This step is essential for ensuring the accuracy of subsequent test data and avoids errors in the test results caused by misalignment of the circular saw blade 15.

[0074] Second, the pressure position is set and loaded: The pressure cylinder 4 of the pressure device is adjusted according to the test requirements. The pressure cylinder 4 is mounted on a slide rail 3 arranged radially along the circular saw blade 15. By controlling the sliding of the slider on the slide rail 3, the pressure cylinder 4 is moved to the designated position on the edge of the circular saw blade 15. Once at the designated position, the corresponding pressure is applied to the circular saw blade 15 according to the pre-set load standard, simulating the force applied to the circular saw blade 15 during actual operation.

[0075] Third, data collection: start the third servo motor 17 of the rotating assembly, and the motor drives the circular saw blade 15 support column 18 to rotate through the gear transmission mechanism 9, so that the circular saw blade 15 starts to rotate in a circumferential direction. At the same time, control the first servo motor 6 and the second servo motor 7 of the displacement detection device. The first servo motor 6 drives the laser displacement sensor 5 to move in the X-axis direction through the first synchronous belt 8-1 and the first synchronous pulley 21-1, and the second servo motor 7 drives the laser displacement sensor 5 to move in the Y-axis direction through the second synchronous belt 8-2 and the second synchronous pulley 12-2. During the rotation of the circular saw blade 15, the laser displacement sensor 5 moves horizontally above the circular saw blade 15 to collect the lateral displacement deformation data of the set phase point within the entire circumference. The range of the collected phase points is 0-360°, and the number of collected data points is given by the formula Determine, where Δθ is the sampling interval of the laser displacement sensor 5, which can be adjusted according to the actual detection accuracy requirements.

[0076] Fourth, data processing: The data processing unit 14 receives the rectangular coordinate (X, Y) data collected by the laser displacement sensor 5 and the rotation angle data fed back by each servo motor. Using the coordinate conversion module, according to the formula and The rectangular coordinates are converted to polar coordinates (θ, R). Then, the converted polar coordinate data is analyzed and processed by the threshold recognition module to identify the displacement value at θ = 90° (corresponding to the "top pressure method" test result) and the phase angle at which the displacement is 0 (corresponding to the "angle method" test result).

[0077] Fifth, Result Output and Analysis: The data processing unit 14 simultaneously outputs the test results from the "top pressure method" and "angle method" to the human-computer interface 16 for display. The operator can visually view the test results on the human-computer interface 16 and use the provided functions to establish a corresponding relationship between the two test results for analysis. Based on the test results, the stress state of the circular saw blade 15 is evaluated to determine whether it meets production standards and actual usage requirements, providing important basis for quality control of the circular saw blade 15 and production process improvement.

[0078] Example 2

[0079] See also Figure 6 The embodiment of the present invention further provides a method for synchronously detecting the stress of a circular saw blade 15 by dual means, comprising the following steps:

[0080] S1. Fix the circular saw blade 15: Fix the circular saw blade 15 on the support column 18 through the detachable flange 2, ensuring that the center of the circular saw blade 15 coincides with the rotation center of the rotating assembly.

[0081] During the rotation test, if the center of the circular saw blade 15 does not coincide with the rotation center, it will produce eccentric motion during rotation, causing deviations in the collected displacement data and affecting the accuracy of the test results. The removable flange 2 cooperates with the support column 18 to stably fix the circular saw blade 15, ensuring that its center of the circle precisely coincides with the rotation center of the rotating assembly, laying the foundation for subsequent accurate displacement data collection and stress state analysis.

[0082] S2. Top pressure loading: adjust the top pressure cylinder 4 to move along the slide rail 3 to the specified position on the edge of the circular saw blade 15 and apply a preset load.

[0083] The circular saw blade 15 will deform when subjected to external forces. By applying a preset load at a specific location on its edge, the force experienced during actual operation is simulated. The pressure cylinder 4 moves to the specified position on the slide rail 3 to ensure accurate placement of the load. The magnitude of the preset load is determined based on testing standards and factors such as the material and specifications of the circular saw blade 15. Different loads will cause varying degrees of deformation in the circular saw blade 15. This deformation data is collected to analyze the stress state of the circular saw blade 15.

[0084] S3. Rotation detection: drive the third servo motor 17 of the rotating assembly to rotate the circular saw blade 15 in the circumferential direction, and at the same time control the first servo motor 6 and the second servo motor 7 of the XY axis moving platform 21 to move the laser displacement sensor 5 along the circumference of the circular saw blade 15 to collect the lateral displacement deformation data of the set phase point within the entire circumference.

[0085] Among them, in order to fully understand the stress distribution in the circumferential direction of the circular saw blade 15, it is necessary to collect data within the entire circumference. The third servo motor 17 drives the circular saw blade 15 to rotate circumferentially, and the first servo motor 6 and the second servo motor 7 control the laser displacement sensor 5 to move around the circular saw blade 15. During the movement, the laser displacement sensor 5 continuously collects the lateral displacement deformation data on the surface of the circular saw blade 15. By setting the interval between the collected phase points (sampling interval Δθ), a set number of data points can be evenly collected throughout the entire circumference to ensure that the collected data can accurately reflect the stress conditions at different positions of the circular saw blade 15.

[0086] S4. Data processing: The data processing unit 14 converts the rectangular coordinates (X, Y) collected by the laser displacement sensor 5 into polar coordinates (θ, R), and identifies the displacement value at θ=90° and the phase angle at which the displacement is 0.

[0087] Among them, rectangular coordinates (X, Y) are not conducive to directly analyzing the relationship between the stress state of the circular saw blade 15 and the angle and radial direction. They are converted into polar coordinates (θ, R) through the coordinate conversion module. In polar coordinates, the displacement value at θ = 90° corresponds to the lateral displacement deformation at a specific position in the "top pressure method", and the phase angle at a displacement of 0 corresponds to the key parameter in the "angle method". The data processing unit 14 uses the coordinate conversion formula and threshold recognition algorithm to process and analyze the collected data, extracting these key data to provide a basis for subsequent evaluation of the stress state of the circular saw blade 15.

[0088] S5. Result output: Synchronously output the “top pressure method” test results and the “angle method” test results, and establish a corresponding relationship between the “top pressure method” test results and the “angle method” test results.

[0089] The "top pressure method" and "angle method" are two different stress detection methods for circular saw blades 15. Their test results reflect the stress state of the circular saw blade 15 from different perspectives. Synchronously outputting these two test results facilitates comprehensive understanding of the stress state of the circular saw blade 15 by the operator. Establishing a corresponding relationship between the two methods allows for further analysis of the relationship between the different detection methods. This allows for better data comparison and conversion for testing requirements under different standards, providing more comprehensive and accurate information for quality assessment and production optimization of circular saw blades 15.

[0090] In this embodiment, when collecting lateral displacement deformation data at a set phase point within the entire circumference, the collected phase point range is 0-360°, and the number of collected data points is:

[0091]

[0092] Where Δθ is the sampling interval of the laser displacement sensor 5.

[0093] Specifically, in order to fully and accurately obtain the stress distribution information in the circumferential direction of the circular saw blade 15, it is necessary to collect data throughout the entire circumference. The sampling interval Δθ determines the density of the collected data points. By dividing 360° by the sampling interval Δθ, the number of data points n collected throughout the entire circumference can be calculated. A smaller sampling interval Δθ will collect more data points, which can more finely reflect the stress changes in the circumferential direction of the circular saw blade 15, but will increase the amount of data processing; a larger sampling interval Δθ will collect fewer data points and may miss some stress change information. Select a suitable sampling interval Δθ based on the actual detection accuracy requirements to ensure that the collected data can meet the detection requirements without causing excessive data redundancy.

[0094] In one possible embodiment, when converting the collected rectangular coordinates (X, Y) to polar coordinates (θ, R):

[0095]

[0096] Wherein, X is the horizontal coordinate of the measuring point of the laser displacement sensor 5 in the coordinate system with the center of the circular saw blade 15 as the origin and the radius of the top pressure position as the X axis, and Y is the vertical coordinate.

[0097] Specifically, similar to the principle of the coordinate conversion module in the data processing unit 14, in the stress detection of the circular saw blade 15, the rectangular coordinates (X, Y) cannot intuitively reflect the angle and radial distance relationship between the measuring point on the circular saw blade 15 and the top pressure position. Calculate the angle θ using the Pythagorean theorem Calculating the polar diameter R and converting the rectangular coordinates into polar coordinates facilitates the subsequent analysis of the stress state of the circular saw blade 15. In particular, when determining the relevant parameters of the "top pressure method" and "angle method" test results, data in polar coordinate form is more conducive to calculation and analysis.

[0098] In a possible embodiment, the detection method of the "top pressure method" is as follows: the laser displacement sensor (5) moves to a position with a phase angle of 90° from the top pressure point, and the circular saw blade (15) rotates one circle to measure the average lateral displacement deformation at the position, thereby obtaining the result D of the "top pressure method".

[0099] Specifically, in the "top pressure method" test, the lateral displacement deformation value at θ = 90° is an important indicator for evaluating the stress state of the circular saw blade 15. After converting the collected data into polar coordinates, the data processing unit 14 filters out the data at θ = 90° in the polar coordinates and extracts the lateral displacement deformation data corresponding to the measurement point of the laser displacement sensor 5 at this angle. This data directly reflects the deformation of the circular saw blade 15 at a specific angle and is used to evaluate the stress magnitude and distribution of the circular saw blade 15 at that location.

[0100] In a possible embodiment, the detection method of the "angle method" is as follows: the circular saw blade (15) remains stationary, and the laser displacement sensor (5) is controlled by a servo motor to perform a circular motion on the circumference of the top pressure position, and the lateral displacement deformation data of one circle is measured, and the position where the lateral displacement deformation is 0 is identified to obtain the result of the "angle method".

[0101] Specifically, in the "angle method" detection, the phase angle at which the lateral displacement deformation reaches zero is a key detection parameter. The data processing unit 14 traverses and filters the collected lateral displacement deformation data at set phase points throughout the entire circumference. When the lateral displacement data at a point is detected as zero, the corresponding phase angle is recorded. This phase angle reflects the specific locations of stress distribution on the circular saw blade 15. By analyzing the distribution of these specific locations, the stress state and structural characteristics of the circular saw blade 15 can be further understood.

[0102] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0103] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A dual-means synchronous detection device for circular saw blade stress, characterized in that: include: A fixed bracket (1) is used to fix the circular saw blade (15) to be tested, wherein the fixed bracket (1) is provided with a detachable flange (2), and the size of the flange (2) is adapted to the circular saw blade (15) of set specifications; A pressing device comprises a slide rail (3) and a pressing cylinder (4), wherein the slide rail (3) is used to adjust the ejection position of the pressing cylinder (4) so ​​as to apply a load to a designated position on the edge of the circular saw blade (15); A displacement detection device comprises an XY-axis moving platform (21) and a laser displacement sensor (5); the XY-axis moving platform (21) uses a first servo motor (6) and a second servo motor (7) as power sources to drive the laser displacement sensor (5) to move horizontally above the circular saw blade (15) to collect lateral displacement deformation data of the surface of the circular saw blade (15); A rotating assembly comprises a third servo motor (17), a gear transmission mechanism (9), a thrust cylindrical roller bearing (10) and a deep groove ball bearing (11); the third servo motor (17) drives the circular saw blade support column (18) to rotate via the gear transmission mechanism (9); the support column (18) is connected to the base (13) via the thrust cylindrical roller bearing (10) and the deep groove ball bearing (11), thereby achieving circumferential rotation of the circular saw blade (15); A data processing unit (14) is electrically connected to the first servo motor (6), the second servo motor (7), the third servo motor (17), and the laser displacement sensor (5), wherein the data processing unit (14) receives displacement data and rotation angle data, calculates the polar coordinates (θ, R) of a specified measurement point of the circular saw blade (15), and identifies the lateral displacement deformation amount D of the circular saw blade (15) at a phase angle of 90° and the phase angle at which the lateral displacement deformation amount is 0. To output the test results of "top pressure method" and "angle method".

2. The circular saw blade stress dual-means synchronous detection device according to claim 1, characterized in that: The detachable flange (2) is connected to the center hole of the circular saw blade (15) through the support column (18), and the flange (2) of a specified diameter is replaced to adapt to the circular saw blade (15) of a specified inner diameter.

3. The circular saw blade stress dual-means synchronous detection device according to claim 1, characterized in that: The slide rail (3) is a linear guide rail, and the slide rail (3) is arranged along the radial direction of the circular saw blade (15). The top-pressing cylinder (4) is installed on the slide rail (3), and the top-pressing cylinder (4) slides on the slide rail (3) through a slider to adjust the top-pressing position.

4. The circular saw blade stress dual-means synchronous detection device according to claim 1, characterized in that: The XY axis moving platform (21) comprises an X axis guide rail (19) and a Y axis guide rail (20) which are perpendicular to each other; the laser displacement sensor (5) is mounted on a slider of the X axis guide rail (19); the first servo motor (6) is equipped with a first synchronous belt (8-1); the second servo motor (7) is equipped with a second synchronous belt (8-2); the first synchronous belt (8-1) is equipped with a first synchronous pulley (12-1); and the second synchronous belt (8-2) is equipped with a second synchronous pulley (12-2); The first servo motor (6) drives the laser displacement sensor (5) to move in the X-axis direction via the first synchronous belt (8-1) and the first synchronous pulley (12-1), and the second servo motor (7) drives the laser displacement sensor (5) to move in the Y-axis direction via the second synchronous belt (8-2) and the second synchronous pulley (12-2).

5. The circular saw blade stress dual-means synchronous detection device according to claim 1, characterized in that: The data processing unit (14) is equipped with a coordinate conversion module, which converts the rectangular coordinates (X, Y) collected by the laser displacement sensor (5) into polar coordinates (θ, R): Wherein, X is the horizontal coordinate of the measuring point of the laser displacement sensor (5) in the coordinate system with the center of the circular saw blade (15) as the origin and the radius of the top pressure position as the X axis, and Y is the vertical coordinate; The data processing unit (14) further comprises a threshold recognition module, wherein the threshold recognition module recognizes the lateral displacement deformation D of the circular saw blade (15) at a phase angle of 90° and the phase angle at which the lateral displacement deformation is 0. It also includes a human-computer interaction interface (16), which displays the detection result D value of the "top pressure method" and the detection result of the "angle method" value.

6. A dual-means synchronous detection method for circular saw blade stress, characterized in that: The following steps are involved: Fixing the circular saw blade (15): fixing the circular saw blade (15) on the support column (18) through the detachable flange (2), ensuring that the center of the circular saw blade (15) coincides with the rotation center of the rotating assembly; Top pressure loading: adjust the top pressure cylinder (4) to move along the slide rail (3) to the designated position on the edge of the circular saw blade (15) and apply a preset load; Rotation detection: driving the third servo motor (17) of the rotating assembly to rotate the circular saw blade (15) in the circumferential direction, and simultaneously controlling the first servo motor (6) and the second servo motor (7) of the XY axis moving platform (21) to move the laser displacement sensor (5) along the circumference of the circular saw blade (15) to collect lateral displacement deformation data at a set phase point within the entire circumference; Data processing: The data processing unit (14) converts the rectangular coordinates (X, Y) collected by the laser displacement sensor (5) into polar coordinates (θ, R), identifies the displacement value D at θ = 90° and the phase angle at which the displacement is 0 Result output: Synchronously output the "top pressure method" test result D and the "angle method" test result And establish the "top pressure method" test result D and the "angle method" test result The corresponding relationship.

7. The method for synchronously detecting circular saw blade stress by dual means according to claim 6, characterized in that: When collecting lateral displacement deformation data at set phase points within the entire circumference, the collected phase point range is 0°-360°, and the number of collected data points is: Where Δθ is the sampling interval of the laser displacement sensor (5).

8. The method for synchronously detecting circular saw blade stress by dual means according to claim 6, characterized in that: When converting the collected rectangular coordinates (X, Y) to polar coordinates (θ, R): Wherein, X is the horizontal coordinate of the measuring point of the laser displacement sensor (5) in the coordinate system with the center of the circular saw blade (15) as the origin and the radius of the top pressure position as the X axis, and Y is the vertical coordinate.

9. The method for synchronously detecting circular saw blade stress by dual means according to claim 6, characterized in that: The detection method of the "top pressure method" is as follows: the laser displacement sensor (5) moves to a position with a phase angle of 90 degrees from the top pressure point, and the circular saw blade (15) rotates one circle to measure the average lateral displacement deformation at the position, and obtains the result D of the "top pressure method".

10. The method for synchronously detecting circular saw blade stress by dual means according to claim 6, characterized in that: The detection method of the "angle method" is as follows: the circular saw blade (15) remains stationary, and the laser displacement sensor (5) is controlled by a servo motor to rotate one circle on the same circumference of the top pressing position, and the lateral displacement deformation data of one circle are measured. The data processing unit (14) screens the collected lateral displacement deformation data, identifies the position where the lateral displacement deformation is 0, and obtains the value of the phase angle corresponding to the point as the result of the "angle method".

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