A saw wheel wear detection device and method

Abstract

This invention belongs to the field of saw wheel profile detection technology, and discloses a saw wheel wear detection device and method. The saw wheel wear detection device includes a fixed base, a laser rangefinder, and a scale. The fixed base is used to fix the saw wheel to be tested. The laser rangefinder is located on the radial side of the saw wheel and is slidably connected to the fixed base along the axial direction of the saw wheel. The laser emitting end of the laser rangefinder emits laser light radially along the saw wheel. The scale is set on the fixed base and extends along the axial direction of the saw wheel. The saw wheel wear detection device and method provided by this invention can perform online detection with reliable data acquisition, without disassembling the saw wheel, thus improving production efficiency.

Description

Technical Field

[0001] This invention relates to the field of saw wheel profile detection technology, and in particular to a saw wheel wear detection device and a saw wheel wear detection method. Background Technology

[0002] In band sawing operations, the upper and lower saw wheels are the core components ensuring sawing stability. The wheel crown is designed with a convex arc surface structure, which applies uniform radial tension to the saw blade wound around it. This not only ensures reliable blade tension but also guides the blade to maintain its ideal running trajectory, effectively preventing lateral displacement during high-speed sawing and thus guaranteeing sawing accuracy and work efficiency. However, during long-term sawing operations, the convex arc surface of the saw wheel crown inevitably experiences continuous friction with the saw blade, and is also subjected to scouring and impact from saw debris, leading to gradual wear of the crown surface and a change in the curvature of the convex structure. As wear accumulates, the tension and positioning guidance effect of the crown on the saw blade gradually weakens, causing the saw blade to deviate from its ideal running position. This results in problems such as sawing deviation and saw blade jump, and in severe cases, even saw blade detachment. This not only affects the processing quality of the sawn workpiece, causing material waste and reduced processing efficiency but may also lead to equipment failure and safety hazards, adversely impacting production operations.

[0003] Currently, the industry lacks efficient and reliable methods for detecting and assessing the wear of band saw wheel crowns. Existing detection methods commonly use offline methods such as coordinate measuring machines (CMMs). These methods require disassembling the aluminum saw wheel from the production line to measure wear parameters, which is not only cumbersome and time-consuming but also leads to production interruptions, severely impacting production schedules. Furthermore, because the radius of the convex arc surface of the saw wheel crown and the diameter of the hub differ significantly from the thickness of the band saw wheel itself, traditional detection methods like CMMs struggle to accurately capture subtle wear changes on the crown arc surface. This results in significant errors in the detection results, failing to provide reliable arc surface wear data and hindering the need for accurate assessment and timely maintenance of saw wheel wear during production.

[0004] Therefore, there is an urgent need to develop a detection device that can achieve online detection of saw wheel wear without disassembly and with reliable data acquisition to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a saw wheel wear detection device and a saw wheel wear detection method, which can detect wear online and collect data reliably without disassembling the saw wheel, thereby improving production efficiency.

[0006] To achieve this objective, the present invention adopts the following technical solution: On the one hand, a saw wheel wear detection device is provided, comprising: The mounting base is used to fix the saw wheel to be tested. A laser rangefinder is located on the radial side of the saw wheel to be tested, and the laser rangefinder is slidably connected to the fixed base along the axial direction of the saw wheel to be tested. The laser emitting end of the laser rangefinder emits laser light along the radial direction of the saw wheel to be tested. A scale is set on a fixed base and extends along the axial direction of the saw wheel to be tested.

[0007] As one possible implementation of the aforementioned saw wheel wear detection device, one of the laser rangefinder and the fixed base is provided with a slider, and the other of the laser rangefinder and the fixed base is provided with a guide rail. The guide rail extends along the axial direction of the saw wheel to be tested, and the slider slides in cooperation with the guide rail.

[0008] As one possible implementation of the saw wheel wear detection device, the fixed base includes two clamping blocks, a crossbar connected between the two clamping blocks, and a connecting block connected to either clamping block. The two clamping blocks are spaced apart along the axial direction of the saw wheel to be tested, and the two clamping blocks are used to clamp and fix the saw wheel to be tested on both sides of the axial direction. The laser rangefinder is slidably connected to the connecting block along the axial direction of the saw wheel to be tested, and the scale is set on the connecting block.

[0009] As one possible implementation of the saw wheel wear detection device, the saw wheel wear detection device also includes fasteners. Each side clamp is equipped with a fastener, which is threadedly connected to the corresponding clamp and abuts against the end face of the saw wheel to be tested.

[0010] As one possible implementation of the aforementioned saw wheel wear detection device, the fastener abutting against one end of the saw wheel to be tested is provided with an elastic buffer pad.

[0011] As one possible implementation of the saw wheel wear detection device, each of the two clamping blocks is provided with a one-to-one corresponding positioning hole, and the two ends of the crossbar are respectively inserted into the positioning holes of the two clamping blocks.

[0012] As one possible implementation of the aforementioned saw wheel wear detection device, two crossbars are provided, which are symmetrically distributed along the laser emitting end of the laser rangefinder.

[0013] As one possible implementation of the aforementioned saw wheel wear detection device, the laser incident angle of the laser rangefinder coincides with the radial direction of the saw wheel to be tested.

[0014] As one possible implementation of the aforementioned saw wheel wear detection device, the outer wall of the laser rangefinder is provided with an indicator mark, the indicator mark is on the same plane as the laser emitted by the laser rangefinder, and the indicator mark is located on the side of the laser rangefinder closer to the scale.

[0015] On the other hand, a saw wheel wear detection method is provided, applicable to any of the above-mentioned technical solutions for saw wheel wear detection devices. The saw wheel wear detection method includes: The mounting base is fixedly installed on the saw wheel to be tested. The laser emission direction of the laser rangefinder is configured to point towards the crown of the saw wheel to be tested, and the laser rangefinder is located on the radial side of the saw wheel to be tested. The laser rangefinder is driven to slide along the fixed base on the axial direction of the saw wheel to be tested. The axial position of the laser emitting end of the laser rangefinder is read by the scale to obtain the lateral coordinate X of each detection point. At the same time, the distance k from the laser to the surface of the wheel crown during the axial movement of the laser rangefinder is obtained. Establish a coordinate system based on the coordinate relationship, define the height coordinate of each detection point as Y = 1 - k, obtain multiple sets of (X, Y) coordinate points, fit multiple sets of (X, Y) coordinate points to form the measured wheel crown profile curve, and extract the height value Y0 corresponding to the X=0 position of the wheel crown edge and the height value Y1 corresponding to the highest point of the wheel crown profile, and calculate the height difference ΔH = Y1 - Y0. The measured crown profile curve is compared with the standard crown profile curve, and the wear degree of the saw wheel to be tested is determined by combining the height difference ΔH.

[0016] The beneficial effects of this invention are: This invention provides a saw wheel wear detection device and method. When wear detection of a saw wheel is required, a fixing base is first directly fixed onto the saw wheel without disassembling it. Simultaneously, the position of the laser rangefinder is adjusted so that its laser emission direction points towards the saw wheel crown, ensuring accurate laser illumination of the crown surface. Next, the laser rangefinder is driven to slide smoothly along the axis of the saw wheel on the fixing base. During this sliding process, the axial position of the laser rangefinder's emitting end is accurately read using a scale fixed to the fixing base, thus obtaining the lateral coordinates of each detection point. Simultaneously, the laser rangefinder collects the distance from the laser beam to the crown surface in real time, achieving synchronous acquisition of axial position and radial distance data, thereby obtaining the coordinates of each detection point. Afterwards, a coordinate system is established based on the collected coordinate data, and data analysis is performed. By fitting multiple sets of coordinate points, a measured crown profile curve of the saw wheel is formed, and the height difference between the lowest and highest points of the crown profile is obtained, providing crucial data support for determining the degree of wear. Finally, the measured profile curve of the saw wheel obtained by fitting is compared with the standard profile curve of the saw wheel to analyze the deviation of the profile curve. At the same time, combined with the calculated height difference, the wear degree of the saw wheel to be tested is comprehensively judged to determine whether the saw wheel needs maintenance or replacement, so as to achieve accurate assessment of the wear state of the saw wheel.

[0017] Unlike existing offline inspection methods such as coordinate measuring machines, this inspection device can be directly fixed on the saw wheel to be inspected without disassembling the saw wheel. This completely avoids production interruptions caused by saw wheel disassembly and inspection, reduces the impact of the inspection process on the production schedule, and is convenient, time-saving, and labor-saving. It significantly improves production continuity and efficiency, and meets the needs of timely inspection and maintenance of saw wheel wear during the production process.

[0018] Laser rangefinders offer high-precision measurement capabilities, accurately capturing minute distance changes on the crown's arc surface. Combined with precise axial positioning using a scale, they enable simultaneous and accurate acquisition of the horizontal and vertical coordinates of the crown's arc surface detection points. By fitting multiple sets of coordinate points, a measured crown profile curve is formed. Simultaneously, by calculating the height difference, the wear condition of the crown's arc surface can be accurately reflected. Compared to measuring the saw wheel diameter, this method effectively solves the problem of traditional detection methods where minute wear is difficult to capture and detection errors are large due to the saw wheel structure (the large difference between the crown's convex arc surface radius, hub diameter, and saw wheel thickness). It provides reliable arc surface wear data for judging the degree of saw wheel wear, ensuring the accuracy of wear assessment.

[0019] This testing device consists of only a fixed base, a laser rangefinder, and a scale. It has a simple structure and is easy to install. It can be quickly fixed to various saw wheels to be tested. The sliding design of the laser rangefinder can fully cover all testing points along the axis of the saw wheel, realizing comprehensive testing of the wheel crown profile. It can adapt to the testing needs of saw wheels of different specifications and has strong versatility. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the saw wheel wear detection device provided in the embodiment of the present invention fixed on the saw wheel; Figure 2 This is a first structural schematic diagram of the saw wheel wear detection device provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the second structure of the saw wheel wear detection device provided in the embodiment of the present invention.

[0021] In the diagram: 1. Fixing base; 11. Clamping block; 12. Crossbar; 13. Connecting block; 131. First block; 132. Second block; 2. Laser rangefinder; 21. Indicating sign; 3. Scale; 4. Bracket; 5. Slider; 6. Guide rail; 7. Fastener; 8. Saw wheel to be tested. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0023] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0026] like Figure 1-3 As shown, an embodiment of the present invention provides a saw wheel wear detection device, including a fixed base 1, a laser rangefinder 2, and a scale 3. The fixed base 1 is used to fix and install the saw wheel 8 to be tested. The laser rangefinder 2 is located on the radial side of the saw wheel 8 to be tested, and the laser rangefinder 2 is slidably connected to the fixed base 1 along the axial direction of the saw wheel 8 to be tested. The laser emitting end of the laser rangefinder 2 emits laser light along the radial direction of the saw wheel 8 to be tested. The scale 3 is disposed on the fixed base 1 and extends along the axial direction of the saw wheel 8 to be tested.

[0027] When wear testing of the saw wheel 8 is required, the mounting base 1 is first directly fixed onto the saw wheel 8 without disassembling it. Simultaneously, the position of the laser rangefinder 2 is adjusted so that its laser emission direction points towards the saw wheel crown, ensuring accurate laser illumination of the crown surface. Next, the laser rangefinder 2 is driven to slide smoothly along the axis of the saw wheel 8 along the mounting base 1. During this sliding process, the axial position of the laser rangefinder 2's emitting end is accurately read using a scale fixed to the mounting base 1, thus obtaining the lateral coordinates of each testing point. Simultaneously, the laser rangefinder 2 collects the distance from the laser beam to the crown surface in real time, achieving synchronous acquisition of axial position and radial distance data, thereby obtaining the coordinates of each testing point. Afterwards, a coordinate system is established based on the collected coordinate data, and data analysis is performed. By fitting multiple sets of coordinate points, the measured crown profile curve of the saw wheel 8 is formed, and the height difference between the lowest and highest points of the crown profile is obtained, providing crucial data support for determining the degree of wear. Finally, the measured profile curve of the saw wheel obtained by fitting is compared with the standard profile curve of the saw wheel to analyze the deviation of the profile curve. At the same time, combined with the calculated height difference, the wear degree of the saw wheel 8 to be tested is comprehensively judged to determine whether the saw wheel needs maintenance or replacement, so as to achieve accurate assessment of the wear state of the saw wheel.

[0028] On the one hand, unlike existing offline testing methods such as coordinate measuring machines, this testing device can be directly fixed on the saw wheel 8 to be tested without disassembling the saw wheel, which completely avoids production interruptions caused by saw wheel disassembly and testing, reduces the impact of the testing process on the production schedule, is easy to operate, saves time and effort, significantly improves production continuity and efficiency, and meets the needs of timely detection and maintenance of saw wheel wear during the production process.

[0029] On the other hand, the laser rangefinder 2 has the advantage of high-precision measurement, which can accurately capture the subtle distance changes of the crown arc surface. Combined with the precise positioning of the axial position by the scale 3, it realizes the synchronous and precise acquisition of the horizontal and vertical coordinates of the crown arc surface detection point. By fitting multiple sets of coordinate points, the actual crown profile curve is formed. At the same time, combined with the calculation of the height difference, it can accurately reflect the wear condition of the crown arc surface. Compared with the method of measuring the saw wheel diameter, it effectively solves the problem of the difficulty in capturing subtle wear and large detection error caused by the saw wheel structure (the large difference between the crown convex arc surface radius, the hub diameter and the saw wheel thickness) in traditional detection methods. It provides reliable arc surface wear data for judging the wear degree of the saw wheel and ensures the accuracy of wear assessment.

[0030] Furthermore, this testing device consists of only a fixed base 1, a laser rangefinder 2, and a scale 3. It has a simple structure and is easy to install. It can be quickly fixed to various saw wheels 8 to be tested. Moreover, the sliding design of the laser rangefinder 2 can fully cover all testing points along the axis of the saw wheel, realize the comprehensive testing of the wheel crown profile, and adapt to the testing needs of saw wheels of different specifications, with strong versatility.

[0031] Furthermore, the laser incident angle of the laser rangefinder 2 coincides with the radial direction of the saw wheel 8 to be tested. This setting ensures that the laser beam is always perpendicularly pointed to the detection point on the crown's arc surface, avoiding distance measurement deviations caused by tilted incident angles. It maximizes the accuracy of the detection distance in reflecting the actual radial height of the crown surface, ensuring the reliability of the detected crown profile curve. This setting eliminates data distortion caused by angular errors from the measurement principle, accurately capturing subtle wear changes on the crown's arc surface, further improving the accuracy of profile fitting and height difference calculation, and making the wear assessment results more reliable.

[0032] Furthermore, the fixing base 1 includes two clamping blocks 11, a crossbar 12 connected between the two clamping blocks 11, and a connecting block 13 connected to any one of the clamping blocks 11. The two clamping blocks 11 are distributed at intervals along the axial direction of the saw wheel 8 to be tested, and the two clamping blocks 11 are used to clamp and fix the saw wheel 8 to be tested on both sides of the axial direction. The laser rangefinder 2 is slidably connected to the connecting block 13 along the axial direction of the saw wheel 8 to be tested, and the scale 3 is set on the connecting block 13.

[0033] The fixed base 1 adopts a split structure with two clamping blocks 11 and a crossbar 12. The two clamping blocks 11 are distributed at intervals along the axial direction of the saw wheel and clamped on both sides of the axial direction of the saw wheel. The crossbar 12 can fit against the outer surface of the stop of the saw wheel to achieve positioning. This enables the detection device to be quickly clamped and stably positioned on the saw wheel without any disassembly, modification or shutdown of the saw wheel. It truly realizes online in-situ detection, fundamentally avoiding the problems of production interruption, cumbersome procedures and time and labor consumption caused by traditional offline detection, and greatly improving detection efficiency and production continuity.

[0034] Meanwhile, by integrating the laser rangefinder 2 and the scale 3 through the connecting block 13, the overall structure is compact and the positioning reference is unified. This ensures that the moving direction of the laser rangefinder 2 is strictly parallel to the axis of the saw wheel, effectively avoiding the impact of installation deviation on the detection accuracy, and further ensuring the stability and reliability of the wheel crown contour data acquisition.

[0035] Furthermore, the saw wheel wear detection device also includes fasteners 7. Each side clamp 11 is equipped with a fastener 7, which is threadedly connected to the corresponding clamp 11 and abuts against the end face of the saw wheel 8 to be tested. Specifically, the fastener 7 is a bolt.

[0036] By setting fasteners 7 on the clamping blocks 11 on both sides, the end face of the saw wheel is pressed against the fasteners 7, which can quickly, firmly, and reliably clamp and fix the detection device to the saw wheel. This fastening method is simple to operate and easy to adjust, and can adapt to the installation requirements of saw wheels of different thicknesses and sizes. The installation process does not require drilling, disassembly, or any structural modification of the saw wheel. It can be directly clamped in place on the production line, truly realizing online detection without disassembling the saw wheel, which greatly improves production efficiency.

[0037] Optionally, an elastic buffer pad is provided at the end of the fastener 7 that abuts against the saw wheel 8 to be tested. This design allows for flexible clamping during bolt tightening, preventing the rigid bolt from directly compressing and damaging the saw wheel end face, thus protecting the original structure and precision of the saw wheel. Simultaneously, the elastic buffer pad increases the friction between the fastener 7 and the saw wheel end face, effectively preventing the fixing seat 1 from loosening, slipping, or vibrating during testing. This ensures the laser rangefinder 2 maintains a stable testing posture, further improving the stability and accuracy of data acquisition and guaranteeing the accuracy and reliability of the crown wear profile measurement results.

[0038] Furthermore, one of the laser rangefinder 2 and the fixed base 1 is provided with a slider 5, and the other of the laser rangefinder 2 and the fixed base 1 is provided with a guide rail 6. The guide rail 6 extends along the axial direction of the saw wheel 8 to be tested, and the slider 5 is slidably engaged with the guide rail 6. In this embodiment, the fixed base 1 is provided with a slider 5, and the laser rangefinder 2 is provided with a guide rail 6.

[0039] This sliding fit structure provides stable motion guidance, high positioning accuracy, and smooth, non-deviation-free movement. It ensures that the laser rangefinder 2 maintains its radial orientation throughout the axial movement, preventing laser irradiation position shifts due to shaking or tilting. This ensures that the lateral coordinates and radial distance data of each detection point are highly consistent, further improving the accuracy and stability of the wheel crown contour detection.

[0040] like Figure 3 As shown, the connecting block 13 includes a first block 131 and a second block 132 that are fixedly connected. The first block 131 is connected to any clamping block 11 by bolts and threads. The scale 3 is set on the first block 131. The second block 132 is provided with a guide rail 6. The laser rangefinder 2 is fixedly connected to a bracket 4, and the bracket 4 is provided with a slider 5. The connecting block 13 adopts a split structure in which the first block 131 and the second block 132 are fixedly connected. The first block 131 is reliably connected to the clamping block 11 by bolts, which facilitates the overall disassembly and positioning of the device and provides a stable installation benchmark for the scale 3, ensuring accurate and uniform axial position detection. The second block 132 integrates the guide rail structure and the laser rangefinder 2, ensuring that the movement direction of the laser rangefinder 2 is strictly parallel to the axial direction of the saw wheel, effectively avoiding installation deviation and movement offset. This split layout achieves a high degree of integration and independence of the installation benchmark, scale positioning, and guiding movement, with a reasonable structural layout and high assembly precision.

[0041] Furthermore, each of the two clamping blocks 11 is provided with a corresponding positioning hole, and the two ends of the crossbar 12 are respectively inserted into the positioning holes of the two clamping blocks 11. This arrangement can achieve precise positioning and coaxial alignment between the two clamping blocks 11, ensuring that the two clamping blocks 11 on both sides remain parallel in the saw wheel axis and the spacing is stable, avoiding skewness or misalignment during clamping, and ensuring that the entire fixed base 1 has a uniform installation benchmark and stronger structural rigidity.

[0042] Preferably, two crossbars 12 are provided, symmetrically distributed along the laser emitting end of the laser rangefinder 2. This arrangement ensures that the two clamping blocks 11 are subjected to uniform and symmetrical force, providing stable support and effectively improving the overall structural rigidity and deformation resistance of the fixing base 1. It also avoids tilting, swaying, or positioning deviation of the clamping blocks 11 caused by unilateral support, ensuring that the device maintains a stable and reliable installation state throughout the detection process. The symmetrical double crossbar structure further ensures that the detection reference of the laser rangefinder 2 is strictly parallel to the saw wheel axis, significantly improving the accuracy of axial movement and distance detection, and ensuring stable and reliable data acquisition.

[0043] Furthermore, the outer wall of the laser rangefinder 2 is provided with an indicator mark 21. The indicator mark 21 is on the same plane as the laser emitted by the laser rangefinder 2, and the indicator mark 21 is located on the side of the laser rangefinder 2 closer to the scale 3.

[0044] An indicator mark 21 is installed on the outer wall of the laser rangefinder 2, and the indicator mark 21 is aligned with the laser emission direction and located on the side of the laser rangefinder 2 closest to the scale 3. This allows for precise correspondence between the laser irradiation position and the lateral coordinate, significantly improving the convenience of the inspection operation and the accuracy of coordinate reading. During the inspection process, the operator can quickly locate the scale mark corresponding to the laser emitter using the indicator mark 21, eliminating the need to repeatedly check the correspondence between the laser irradiation point and the scale 3. This effectively reduces coordinate reading errors, ensures the accuracy of the lateral coordinates of each inspection point, and thus guarantees the reliability of subsequent contour fitting and height difference calculation, accurately capturing subtle wear changes on the wheel crown arc surface.

[0045] An embodiment of the present invention provides a saw wheel wear detection method, applied to the saw wheel wear detection device described above. The saw wheel wear detection method includes: The mounting base 1 is fixedly installed on the saw wheel 8 to be tested. The laser emission direction of the laser rangefinder 2 is configured to point towards the crown of the saw wheel 8 to be tested, and the laser rangefinder 2 is located on the radial side of the saw wheel 8 to be tested. The laser rangefinder 2 is driven to slide along the fixed base 1 on the axial direction of the saw wheel 8 to be tested. The axial position of the laser emitting end of the laser rangefinder 2 is read through the scale 3 to obtain the lateral coordinate X of each detection point; at the same time, the distance k from the laser to the surface of the wheel crown during the axial movement of the laser rangefinder 2 is obtained. Establish a coordinate system based on the coordinate relationship, define the height coordinate of each detection point as Y = 1 - k, obtain multiple sets of (X, Y) coordinate points, fit multiple sets of (X, Y) coordinate points to form the measured wheel crown profile curve, and extract the height value Y0 corresponding to the X=0 position of the wheel crown edge and the height value Y1 corresponding to the highest point of the wheel crown profile, and calculate the height difference ΔH = Y1 - Y0. The measured crown profile curve is compared with the standard crown profile curve, and the wear degree of the saw wheel 8 to be tested is determined by combining the height difference ΔH.

[0046] The working process of the saw wheel wear detection device and saw wheel wear detection method provided in this embodiment is as follows: First, place the two clamping blocks 11 of the testing device mounting base 1 at intervals along the axial direction of the saw wheel to be tested, so that the two clamping blocks 11 are tightly fitted against the two axial end faces of the saw wheel. Then, tighten the matching fasteners 7 on the two clamping blocks 11, so that the fasteners 7 tightly abut against and press against the end face of the saw wheel, realizing the stable clamping of the mounting base 1 on the saw wheel to be tested 8. The entire clamping process does not require disassembling the saw wheel and can be completed directly on the production line. After clamping, adjust the posture of the laser rangefinder 2 to ensure that the laser emission direction is accurately pointed to the crown of the saw wheel 8 to be tested, and that the laser incident angle is completely coincident with the radial direction of the saw wheel. At the same time, ensure that the indicator mark 21 on the outer wall of the laser rangefinder 2 is on the same plane as the laser emission direction, and that the indicator mark 21 is located on the side of the laser rangefinder 2 closer to the scale 3, laying a precise foundation for subsequent lateral coordinate reading and data acquisition.

[0047] Afterwards, the operator manually drives the laser rangefinder 2 to slide smoothly along the guide rail 6 on the second block 132 of the connecting block 13, with the sliding direction consistent with the axial direction of the saw wheel 8 to be tested. During the sliding process, the laser rangefinder 2 quickly and accurately reads the corresponding scale on the scale 3 using the indicator mark 21 on the side near the scale 3, thereby obtaining the lateral coordinate X of each detection point. At the same time, the laser rangefinder 2 collects the radial distance k of the laser irradiation on the surface of the saw wheel crown in real time. Since the laser incident angle coincides with the radial direction of the saw wheel, it can ensure that the collected distance k truly reflects the actual radial height of the corresponding detection point on the surface of the crown, effectively avoiding data distortion caused by angular deviation. During the sliding process, multiple detection points are evenly selected according to the axial length of the crown of the saw wheel 8 to be tested, ensuring that the collected data can fully cover the entire axial contour of the crown, especially focusing on collecting points near the edge of the crown and the highest point of the contour, providing comprehensive and reliable data support for subsequent contour fitting and wear judgment.

[0048] Subsequently, a two-dimensional coordinate system is established based on the acquired lateral coordinate X and radial distance k of each detection point, with the saw wheel axis as the X-axis and the saw wheel radial direction as the Y-axis. The height coordinate of each detection point is defined as Y = 1 - k, thus obtaining multiple sets of complete (X, Y) coordinate points. Using a curve fitting algorithm in the art, these multiple sets of (X, Y) coordinate points are fitted to form the measured crown profile curve of the saw wheel 8 to be tested. During the fitting process, the influence of random errors on the profile curve can be reduced through algorithm optimization, ensuring that the curve accurately reproduces the actual profile shape of the crown. Simultaneously, from the fitted measured crown profile curve, the height value Y0 corresponding to the crown edge X=0 position and the height value Y1 corresponding to the highest point of the crown profile are accurately extracted. By calculating the height difference ΔH = Y1 - Y0, the actual height parameter of the crown's convex arc surface is obtained, which directly reflects the wear degree of the crown.

[0049] Finally, the wear level is judged and evaluated. First, a standard crown profile curve is obtained. This can be achieved in two ways: one is by directly extracting standard profile parameters from the saw wheel design drawings; the other is by using the detection method described in this invention to inspect a brand-new, unworn saw wheel, collecting the (X, Y) coordinates of each detection point, and fitting them to form the standard crown profile curve. Both methods ensure the accuracy and authority of the standard crown profile curve. Then, the fitted measured crown profile curve is compared and analyzed with the standard crown profile curve, focusing on the deviation amplitude and location between the measured curve and the standard curve to determine the wear area and range of the crown arc surface. Simultaneously, the calculated height difference ΔH is compared with the standard crown height difference threshold. If ΔH is less than or equal to the threshold, the saw wheel wear is considered within the allowable range and it can continue to be used; if ΔH is greater than the threshold, the saw wheel wear is considered severe, requiring immediate shutdown for maintenance or replacement. This achieves a precise and quantitative assessment of the saw wheel wear status.

[0050] The entire testing process does not require disassembling the saw wheel or stopping the production line. From device clamping and data acquisition to data processing and wear assessment, the entire process can be completed on-site on the production line, ensuring both the convenience and efficiency of the testing, as well as the accuracy and reliability of the test data.

[0051] It should be noted that data analysis and curve fitting are existing technologies in this field and will not be elaborated upon here.

[0052] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A saw wheel wear detection device, characterized by, include: Fixing seat (1), the fixing seat (1) is used to fix the saw wheel (8) to be tested; A laser rangefinder (2) is located on the radial side of the saw wheel (8) to be tested, and the laser rangefinder (2) is slidably connected to the fixed base (1) along the axial direction of the saw wheel (8) to be tested. The laser emitting end of the laser rangefinder (2) emits laser light along the radial direction of the saw wheel (8) to be tested. A scale (3) is provided on the fixed base (1) and the scale (3) extends along the axial direction of the saw wheel (8) to be tested.

2. The saw wheel wear detection device of claim 1, wherein, One of the laser rangefinder (2) and the fixed base (1) is provided with a slider (5), and the other of the laser rangefinder (2) and the fixed base (1) is provided with a guide rail (6). The guide rail (6) extends along the axial direction of the saw wheel (8) to be tested, and the slider (5) slides in cooperation with the guide rail (6).

3. The saw wheel wear detection device of claim 1, wherein, The fixed base (1) includes two clamping blocks (11), a crossbar (12) connecting the two clamping blocks (11), and a connecting block (13) connecting any one of the clamping blocks (11). The two clamping blocks (11) are distributed at intervals along the axial direction of the saw wheel (8) to be tested. The two clamping blocks (11) are used to clamp and fix the saw wheel (8) to be tested on both sides of the axial direction. The laser rangefinder (2) is slidably connected to the connecting block (13) along the axial direction of the saw wheel (8) to be tested. The scale (3) is set on the connecting block (13).

4. The saw wheel wear detection device of claim 3, wherein, The saw wheel wear detection device also includes fasteners (7), and each of the clamps (11) is equipped with the fasteners (7). The fasteners (7) are threaded to the corresponding clamps (11) and abut against the end face of the saw wheel (8) to be tested.

5. The saw wheel wear detection device of claim 4, wherein, The fastener (7) has an elastic buffer pad at one end of the saw wheel (8) to be tested.

6. The saw wheel wear detection device of claim 3, wherein, Both clamping blocks (11) are provided with corresponding positioning holes, and the two ends of the crossbar (12) are respectively inserted into the positioning holes of the two clamping blocks (11).

7. The saw wheel wear detection device of claim 6, wherein, There are two crossbars (12), and the two crossbars (12) are symmetrically distributed along the laser emitting end of the laser rangefinder (2).

8. The saw wheel wear detection device of claim 1, wherein, The laser incident angle of the laser rangefinder (2) coincides with the radial direction of the saw wheel (8) to be tested.

9. The saw wheel wear detection device of any one of claims 1-8, wherein, The laser rangefinder (2) has an indicator mark (21) on its outer wall. The indicator mark (21) is on the same plane as the laser emitted by the laser rangefinder (2), and the indicator mark (21) is located on the side of the laser rangefinder (2) closer to the scale (3).

10. A method of detecting wear of a saw wheel, applied to the wear detecting apparatus of any one of claims 1 to 9, characterized by, The saw wheel wear detection method includes: The mounting base (1) is fixedly installed on the saw wheel (8) to be tested. The laser emission direction of the laser rangefinder (2) is configured to point to the crown of the saw wheel (8) to be tested, and the laser rangefinder (2) is located on the radial side of the saw wheel (8) to be tested. Driving the laser range finder (2) to slide along the fixed seat (1) in the axial direction of the saw wheel (8) to be detected, reading the axial position of the laser emission end of the laser range finder (2) through the scale (3), and obtaining the transverse coordinate X of each detection point; meanwhile, the distance k of the laser irradiation to the surface of the wheel rim during the axial movement of the laser range finder (2) is obtained; According to the coordinate relationship, a coordinate system is established, the height coordinate corresponding to each detection point is defined as Y=1-k, a plurality of (X, Y) coordinate points are obtained, the measured wheel rim contour curve is formed by fitting the plurality of (X, Y) coordinate points, the height value Y0 corresponding to the position of the wheel rim edge X=0 is extracted, and the height value Y1 corresponding to the highest point of the wheel rim contour is extracted, and the height difference ΔH=Y1-Y0 is calculated; The measured wheel rim contour curve is compared with the standard wheel rim contour curve, and the wear degree of the saw wheel (8) to be detected is judged in combination with the height difference ΔH.

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