A guitar neck polishing machine

Abstract

This invention discloses a guitar neck polishing machine, comprising a neck clamp, a base drive device, a detection device, a polishing device, and an interaction device. The neck clamp is used to fix the guitar neck and is mounted on the base drive device. The base drive device includes a slide rail and a moving platform. The detection device and the polishing device are respectively located at both ends of the slide rail. The bottom of the moving platform has a groove that cooperates with the slide rail, allowing the moving platform to move along the slide rail. The neck clamp is mounted on the moving platform, and the base drive device drives the neck clamp to move back and forth between the detection device and the polishing device. This guitar neck polishing machine can automatically and precisely polish guitar necks.

Description

Technical Field

[0001] This invention belongs to the field of guitar processing technology, specifically referring to a guitar neck polishing machine. Background Technology

[0002] In the guitar manufacturing process, neck polishing is a crucial step, as its quality directly affects the guitar's playability and overall quality. Traditional guitar neck polishing methods often rely on manual labor, which presents numerous problems.

[0003] First, it is difficult to guarantee the precision of sanding when it is done manually. Relying solely on the worker's experience and feel, it is difficult to ensure that all parts of the neck are sanded evenly and precisely to the appropriate size and smoothness. This can easily lead to over-sanding or under-sanding in certain areas, resulting in the neck surface not meeting the requirements for flatness, which affects subsequent assembly and the guitar's tone and other performance characteristics.

[0004] Secondly, in terms of detecting defects in the neck, manual visual inspection is inefficient and easily misses some minor scratches, dents and other problems. It is impossible to fully and accurately grasp the actual condition of the neck, which makes it difficult to make accurate basis for subsequent polishing and to treat the defective parts in a targeted manner.

[0005] Furthermore, traditional simple clamps for fixing the neck often only fix one side of the neck or the fixing method is not flexible enough. When different sides of the neck need to be processed, the operation is cumbersome, time-consuming, and it is easy to cause deviations in the position of the fixed neck during the adjustment process, affecting the processing accuracy.

[0006] Furthermore, regarding quality traceability, the lack of effective marking methods makes it difficult to quickly and accurately trace the source of quality problems when they occur, as well as the specific location and cause of the defect. This hinders quality control and continuous improvement during production. Moreover, the entire polishing process relies heavily on manual control, resulting in low automation and significant variations in worker operation, leading to inconsistent product quality and making it difficult to consistently produce high-quality guitar necks.

[0007] In summary, traditional guitar neck polishing methods have shortcomings in terms of precision, inspection, fixation, quality traceability, and automation control. There is an urgent need for equipment that can solve these problems and achieve precise, efficient, and high-quality guitar neck polishing. Summary of the Invention

[0008] To address the problems in the prior art, this invention proposes a guitar neck polishing machine that can automatically clean the lens of the cavity mirror, ensuring clear camera image, without needing to remove it, making it convenient to operate and improving efficiency.

[0009] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a guitar neck polishing machine, comprising a neck clamp, a base drive device, a detection device, a polishing device, and an interaction device; the neck clamp is used to fix the guitar neck, and the neck clamp is mounted on the base drive device; the base drive device includes a slide rail and a moving platform, the detection device and the polishing device are respectively located at both ends of the slide rail, the bottom of the moving platform is provided with a sliding groove, the sliding groove cooperates with the slide rail, and the moving platform can move along the slide rail; the neck clamp is mounted on the moving platform, and the base drive device is used to drive the neck clamp to move back and forth between the detection device and the polishing device;

[0010] The detection device includes a first detection camera and a mounting bracket. The mounting bracket includes a column and a crossbar. The crossbar is perpendicular to the slide rail. The bottom of both ends of the crossbar is connected to the column. The two columns are fixedly installed on both sides of the slide rail. The first detection camera is fixed below the crossbar. The first detection camera captures images of the guitar neck surface and detects defects on the guitar neck surface.

[0011] The interactive device includes an operation panel and a display screen. The operation panel is equipped with a controller. The base driving device, the detection device, and the polishing device are all electrically connected to the controller. The controller is equipped with an image processing module, a positioning adjustment module, a polishing control module, and a data transmission module.

[0012] The image processing module is used to preprocess the image captured by the first detection camera; the positioning adjustment module is used to control the base drive device to adjust the position of the neck clamp and control the flipping mechanism to adjust the angle of the guitar neck; the polishing control module is responsible for controlling the operation of the polishing device; the data transmission module is used to interact with the cloud server, and the data transmission module uploads the image data preprocessed by the image processing module to the cloud server.

[0013] The cloud server is equipped with a database module, a defect detection module, a defect location module, and a polishing scheme generation module.

[0014] The database module is used to store preprocessed inspection images; the defect detection module detects and identifies the inspection images to determine whether defects exist and their types; the defect point location module sends the detected defect location to the polishing scheme generation module; the polishing scheme generation module generates a polishing scheme based on the defect point coordinates located by the defect point location module.

[0015] The data transmission module downloads the polishing scheme generated by the polishing scheme generation module from the cloud server and sends it to the polishing control module to control the operation of the polishing device.

[0016] Furthermore, the neck clamp includes a base, a flipping mechanism, a first fixing mechanism, and a second fixing mechanism. The flipping mechanism is installed at both ends of the base. The first fixing mechanism and the second fixing mechanism are respectively fixed to the two flipping mechanisms. The first fixing mechanism and the second fixing mechanism respectively fix the two ends of the guitar neck.

[0017] Furthermore, the flipping mechanism includes a mounting plate, a rotating drum, and a second motor. The mounting plate has a through hole, and the rotating drum is installed in the through hole through a rotating bearing. One end of the rotating drum is provided with a gear ring. The rotating shaft of the second motor is connected to a gear, and the gear meshes with the gear ring. The rotating drums of the two flipping mechanisms are coaxial, and the first fixing mechanism and the second fixing mechanism are respectively installed inside the two rotating drums.

[0018] Furthermore, the grinding device includes a height adjustment mechanism, a grinding mechanism, and a clamping mechanism. The grinding mechanism includes a mounting frame, a grinding motor, pulleys, a grinding belt, and a tensioning roller. The pulleys are mounted on both sides of the mounting frame. The shaft of the grinding motor is connected to the shaft of one of the pulleys, and the grinding belt is mounted on both pulleys. The height adjustment mechanism includes a hydraulic push rod and a detection sensor. The detection sensor is located on the mounting frame, and the hydraulic push rod is mounted on both bottom sides of the mounting frame. The tensioning roller is mounted on the mounting frame by a spring and presses against the grinding belt.

[0019] The clamping mechanism includes a horizontal drive mechanism, a lifting drive mechanism, and a clamping wheel. The horizontal drive mechanism uses a lead screw slide, which is fixed to the top of the mounting frame. The lifting drive mechanism is installed on both sides of the lead screw slide of the horizontal drive mechanism and uses threaded telescopic rods. The shaft of the clamping wheel is connected to the push rod ends of the two threaded telescopic rods. The clamping wheel can press the polishing belt onto the surface of the guitar neck under the drive of the lifting drive mechanism. When the polishing belt rotates under the drive of the polishing motor, it polishes the surface of the guitar neck. The horizontal drive mechanism... The guide rail of the lead screw slide of the mechanism is perpendicular to the slide rail; the grinding control module includes a clamping control unit, a height adjustment unit, a speed adjustment unit, and a grinding scheme reading unit. The clamping control unit is used to control the operation of the clamping mechanism, the height adjustment unit is used to control the operation of the height adjustment mechanism, and the speed adjustment unit is used to control the speed of the grinding motor; the grinding scheme reading unit reads the grinding scheme downloaded from the cloud server and sends the corresponding control commands to the clamping control unit, the height adjustment unit, and the speed adjustment unit respectively.

[0020] Furthermore, the detection device also includes a laser marker and a second detection camera. The laser marker is located at the bottom of the crossbeam and illuminates the guitar neck with a laser line perpendicular to the slide rail. The second detection camera is mounted on one side of the crossbeam. The image processing module is also used to preprocess the image captured by the second detection camera.

[0021] Furthermore, the defect detection module includes a surface defect detection unit, an edge contour defect detection unit, and a cross-sectional shape defect recognition unit;

[0022] The cross-sectional shape defect identification unit is used to identify the outline shape of the light spot projected by the laser marker on the surface of the guitar neck, and to determine whether there is a defect in the cross-sectional shape of the guitar neck based on the outline shape of the light spot.

[0023] The image processing module includes a detection area image cropping unit, an edge image stitching unit, and an image information marking unit;

[0024] The detection area image cropping unit crops out pixels within a fixed detection area according to a preset method. The image captured by the first detection camera is cropped out according to a preset detection area. The detection area includes a defect detection area and an edge detection area. There are two edge detection areas. The defect detection area is located between the two edge detection areas. The width of the defect detection area and the edge detection area is equal to the shooting position interval distance.

[0025] The edge image stitching unit stitches the edge detection area images of images taken from the same angle end to end to form a complete neck edge image;

[0026] The image information marking unit obtains the horizontal coordinates of the neck clamp and the angle of the flipping mechanism when each photo is taken, and marks the horizontal coordinates, angle information and detection area type on the image data.

[0027] Furthermore, the steps for the light spot contour recognition unit to identify surface defects on the guitar neck are as follows:

[0028] Step S1: Convert the acquired raw image to grayscale to simplify subsequent processing.

[0029] Step S2: Remove noise interference from the image using a filtering algorithm to smooth the image and prevent noise from affecting the recognition of light spot contours;

[0030] Step S3: Use an edge detection algorithm to extract the edge information of the light spot image and initially outline the contour of the light spot;

[0031] Step S4: Perform contour tracking on the results obtained from edge detection to determine the complete light spot contour curve. During the tracking process, record the coordinate information of each point on the contour.

[0032] Step S5: Perform symmetry analysis on the coordinates of each point on the light spot contour, and report the detection when the symmetry deviation distance exceeds the threshold.

[0033] Furthermore, the positioning adjustment module includes a fixture movement control unit, an angle control unit, a defect image information query unit, and a track coordinate conversion unit;

[0034] The clamp movement control unit is used to control the base drive device to adjust the position of the neck clamp, and the angle control unit is used to control the flipping mechanism to adjust the angle of the guitar neck.

[0035] The defect image information query unit obtains the fixture track coordinate information and fixture angle information of each detected defect image data annotation;

[0036] The track coordinate conversion unit converts the acquired fixture track coordinate information at the detection device into fixture track coordinate information at the grinding device. When further grinding is required at the detected defect location, the neck fixture is controlled to move to the converted track coordinate.

[0037] Furthermore, the specific steps for polishing are as follows:

[0038] Step S1: Obtain the feedback of the defective area number; the base drive device drives the neck clamp to move, moving the defective area directly below the polishing belt; the flipping mechanism drives the guitar neck to rotate, so that the defective area faces upward.

[0039] Step S2: The horizontal drive mechanism moves the clamping wheel to directly above the defect area;

[0040] Step S3: The pressure roller is lowered, pressing the polishing belt onto the surface of the guitar neck. The polishing plan is read, and the pressure is adjusted.

[0041] Step S4: Start the polishing motor, read the polishing plan, adjust the speed of the polishing motor according to the defect type, the polishing motor drives the pulley to rotate, the pulley drives the polishing belt to rotate, and the polishing belt polishes the surface of the guitar neck.

[0042] The beneficial effects of the guitar neck polishing machine of the present invention are as follows: Through a first detection camera and a second detection camera, the guitar neck can be photographed from different angles to obtain images of the neck surface. The first detection camera detects defects on the neck surface, while the second detection camera, in conjunction with a laser marker, can identify whether there are unevenness or asymmetry on the neck surface, comprehensively and accurately detecting various problems with the neck. The flipping mechanism allows the guitar neck to rotate within a range of ±90 degrees, facilitating the capture of images from multiple angles for defect detection. It also allows the defective area to face upwards during polishing, improving the comprehensiveness and accuracy of detection and polishing. The machine boasts a high degree of automation. The base drive device drives the neck clamp to move back and forth between the detection device and the polishing device. The various modules of the controller work collaboratively with the detection device, polishing device, and base drive device, automatically controlling the polishing process based on the image detection results. This includes adjusting the position of the neck clamp, the angle of the guitar neck, the height of the polishing device, the clamping force, and the rotation speed, thus achieving automation of the polishing process. The machine is intelligent. The system generates a polishing plan by preprocessing the inspection images through an image processing module and uploading them to a cloud server. Various modules on the cloud server analyze the images, determine the type and location of defects, generate a polishing plan, and then download it to the polishing control module to control the operation of the polishing device. This eliminates the need for manual programming, improving polishing efficiency. It can adapt to different neck sizes; guitar necks of different sizes can be input via an interactive device to access a region division template on the cloud server, specifying the inspection area range for images taken at each location. This allows the polishing machine to meet the inspection and polishing needs of necks of varying sizes. Attached Figure Description

[0043] Figure 1 This is a side view of a guitar neck polishing machine according to the present invention;

[0044] Figure 2This is a schematic diagram of the structure of a guitar neck polishing machine according to the present invention;

[0045] Figure 3 This is a schematic diagram of the detection device for a guitar neck polishing machine according to the present invention;

[0046] Figure 4 This is a system architecture diagram of the controller for a guitar neck polishing machine according to the present invention;

[0047] Figure 5 This is a system architecture diagram of the image processing module of the controller for a guitar neck polishing machine according to the present invention;

[0048] Figure 6 This is a system architecture diagram of the positioning adjustment module of the controller of a guitar neck polishing machine according to the present invention;

[0049] Figure 7 This is a system architecture diagram of the grinding control module of the controller of a guitar neck grinding machine according to the present invention.

[0050] Among them, 1-neck clamp, 11-base, 12-flipping mechanism, 121-mounting plate, 122-rotating drum, 123-second motor, 124-gear, 13-first fixing mechanism, 14-second fixing mechanism, 2-base drive device, 21-slide rail, 22-moving platform, 221-slide groove, 23-screw, 24-first motor, 3-detection device, 31-first detection camera, 32-mounting bracket, 321-column, 322-crossbar, 33-laser marker, 34-second detection camera, 4-grinding device, 41-height adjustment mechanism, 411-hydraulic push rod, 412-detection sensor, 42-grinding mechanism, 421-mounting frame, 422-grinding motor, 423-pulley, 424-grinding belt, 425-tensioning roller Shaft, 43-Clamping mechanism, 431-Horizontal drive mechanism, 432-Lifting drive mechanism, 433-Clamping wheel, 5-Interactive device, 51-Operation panel, 52-Display screen, 6-Controller, 61-Image processing module, 611-Detection area image cropping unit, 612-Edge image stitching unit, 613-Image information marking unit, 62-Positioning adjustment module, 621-Clamping movement control unit, 622-Angle control unit, 623-Defect image information query unit, 624-Track coordinate conversion unit, 63-Grinding control module, 631-Clamping control unit, 632-Height adjustment unit, 633-Speed ​​adjustment unit, 634-Grinding scheme reading unit, 64-Data transmission module, 7-Cloud server, 8-Guitar neck. Detailed Implementation

[0051] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] like Figure 1-7 As shown, the present invention is a guitar neck polishing machine, including a neck clamp 1, a base drive device 2, a detection device 3, a polishing device 4, and an interaction device 5; the neck clamp 1 is used to fix the guitar neck 8, and the neck clamp 1 is mounted on the base drive device 2; the base drive device 2 includes a slide rail 21 and a moving platform 22, the detection device 3 and the polishing device 4 are respectively located at both ends of the slide rail 21, the bottom of the moving platform 22 is provided with a sliding groove 221, the sliding groove 221 cooperates with the slide rail 21, and the moving platform 22 can move along the slide rail 21; the neck clamp 1 is mounted on the moving platform 22, and the base drive device 2 is used to drive the neck clamp 1 to move back and forth between the detection device 3 and the polishing device 4;

[0053] The detection device 3 includes a first detection camera 31 and a mounting bracket 32. The mounting bracket 32 ​​includes a column 321 and a crossbar 322. The crossbar 322 is perpendicular to the slide rail 21. The bottom ends of the crossbar 322 are connected to the column 321. The two columns 321 are respectively fixedly installed on both sides of the slide rail 21. The first detection camera 31 is fixed below the crossbar 322. The first detection camera 31 captures images of the surface of the guitar neck 8 and detects surface defects of the guitar neck 8.

[0054] The interactive device 5 includes an operation panel 51 and a display screen 52. The operation panel 51 is equipped with a controller 6. The base driving device 2, the detection device 3 and the polishing device 4 are all electrically connected to the controller 6. The controller 6 is equipped with an image processing module 61, a positioning adjustment module 62, a polishing control module 63 and a data transmission module 64.

[0055] The image processing module 61 is used to preprocess the image captured by the first detection camera 31; the positioning adjustment module 62 is used to control the base drive device 2 to adjust the position of the neck clamp 1 and to control the flipping mechanism 12 to adjust the angle of the guitar neck 8; the polishing control module 63 is responsible for controlling the operation of the polishing device 4; the data transmission module 64 is used to interact with the cloud server 7, and the data transmission module 64 uploads the image data preprocessed by the image processing module 61 to the cloud server 7.

[0056] The cloud server 7 is equipped with a database module, a defect detection module, a defect location module, and a polishing scheme generation module;

[0057] The database module is used to store preprocessed inspection images; the defect detection module detects and identifies the inspection images to determine whether defects exist and their types; the defect point location module sends the detected defect location to the polishing scheme generation module; the polishing scheme generation module generates a polishing scheme based on the defect point coordinates located by the defect point location module.

[0058] The data transmission module 64 downloads the polishing scheme generated by the polishing scheme generation module from the cloud server 7 and sends it to the polishing control module 63 to control the operation of the polishing device 4.

[0059] Furthermore, the neck clamp 1 includes a base 11, a flipping mechanism 12, a first fixing mechanism 13, and a second fixing mechanism 14. The flipping mechanism 12 is installed at both ends of the base 11. The first fixing mechanism 13 and the second fixing mechanism 14 are respectively fixed to the two flipping mechanisms 12, and respectively fix the two ends of the guitar neck 8. The base driving device 2 also includes a screw 23 and a first motor 24. The moving platform 22 has a threaded hole, and the screw 23 engages with the threaded hole. The shaft of the first motor 24 is connected to the screw 23, and the first motor 24 drives the screw 23 to rotate, thereby moving the moving platform 22 along the slide rail 21.

[0060] Furthermore, the flipping mechanism 12 includes a mounting plate 121, a rotating cylinder 122, and a second motor 123. The mounting plate 121 has a through hole, and the rotating cylinder 122 is mounted in the through hole via a rotating bearing. One end of the rotating cylinder 122 has a gear ring. The shaft of the second motor 123 is connected to a gear 124, which meshes with the gear ring. The rotating cylinders 122 of the two flipping mechanisms 12 are coaxial, and the first fixing mechanism 13 and the second fixing mechanism 14 are respectively installed inside the two rotating cylinders 122. The two second motors 123 rotate synchronously, which can adjust the angle of the guitar neck 8, facilitating the capture of images from multiple angles for defect detection and polishing.

[0061] Further, the grinding device 4 includes a height adjustment mechanism 41, a grinding mechanism 42, and a pressing mechanism 43. The grinding mechanism 42 includes a mounting frame 421, a grinding motor 422, pulleys 423, a grinding belt 424, and a tensioning roller 425. The pulleys 423 are mounted on both sides of the mounting frame 421. The shaft of the grinding motor 422 is connected to the shaft of one of the pulleys 423. The grinding belt 424 is mounted on both pulleys 423. The height adjustment mechanism 41 includes a hydraulic push rod 411 and a detection sensor 412. The detection sensor 412 is located on the mounting frame 421. The bottom sides of the mounting frame 421 are mounted on the hydraulic push rod 411. The tensioning roller 425 is mounted on the mounting frame 421 by a spring and presses against the grinding belt 424.

[0062] The pressing mechanism 43 includes a horizontal drive mechanism 431, a lifting drive mechanism 432, and a pressing wheel 433. The horizontal drive mechanism 431 is a lead screw slide, which is fixed to the top of the mounting frame 421. The lifting drive mechanism 432 is installed on both sides of the lead screw slide of the horizontal drive mechanism 431. The lifting drive mechanism 432 is a threaded telescopic rod. The shaft of the pressing wheel 433 is connected to the push rod ends of the two threaded telescopic rods. The pressing wheel 433 can press the polishing belt 424 onto the surface of the guitar neck 8 under the drive of the lifting drive mechanism 432. A pressure sensor is provided at the push rod of the threaded telescopic rod of the lifting drive mechanism 432 to provide feedback on the pressing pressure. When the polishing belt 424 rotates under the drive of the polishing motor 422, it presses against the surface of the guitar neck 8. The surface of the guitar neck 8 is polished; the guide rail of the lead screw slide of the horizontal drive mechanism 431 is perpendicular to the slide rail 21; the polishing control module 63 includes a clamping control unit 631, a height adjustment unit 632, a speed adjustment unit 633, and a polishing scheme reading unit 634. The clamping control unit 631 is used to control the operation of the clamping mechanism 43, the height adjustment unit 632 is used to control the operation of the height adjustment mechanism 41, and the speed adjustment unit 633 is used to control the speed of the polishing motor 422; the polishing scheme reading unit 634 reads the polishing scheme downloaded from the cloud server 7 and sends the corresponding control commands to the clamping control unit 631, the height adjustment unit 632, and the speed adjustment unit 633 respectively.

[0063] Furthermore, the detection device 3 also includes a laser marker 33 and a second detection camera 34. The laser marker 33 is located at the bottom of the crossbeam 322 and projects a laser line towards the guitar neck 8, with the direction of the laser line perpendicular to the slide rail 21. The second detection camera 34 is installed on one side of the crossbeam 322. The image processing module 61 is also used to preprocess the image captured by the second detection camera 34. Since the outline of the laser line cannot be seen from directly above, installing the two second detection cameras 34 on both sides of the crossbeam 322 allows the capture of the curved outline of the laser line along the surface of the guitar neck 8, thus identifying whether there are unevenness or asymmetry on the surface of the guitar neck 8. There are two laser markers 33, respectively installed at the bottom of both ends of the crossbeam 322.

[0064] Furthermore, the defect detection module includes a surface defect detection unit, an edge contour defect detection unit, and a cross-sectional shape defect recognition unit;

[0065] The cross-sectional shape defect identification unit is used to identify the outline shape of the light spot projected by the laser marker 33 onto the surface of the guitar neck 8, and to determine whether there is a defect in the cross-sectional shape of the guitar neck 8 based on the outline shape of the light spot.

[0066] The image processing module 61 includes a detection area image cropping unit 611, an edge image stitching unit 612, and an image information marking unit 613;

[0067] The detection area image cropping unit 611 crops out pixels within a fixed detection area according to a preset method. The first detection camera 31 crops out an image from the photograph taken by the first detection camera according to a preset detection area. The detection area includes a defect detection area and an edge detection area. There are two edge detection areas. The defect detection area is located between the two edge detection areas. The width of the defect detection area and the edge detection area is equal to the shooting position interval distance.

[0068] The edge image stitching unit 612 stitches the edge detection area images of images taken from the same angle end to end to form a complete neck edge image;

[0069] The image information marking unit 613 acquires the horizontal coordinates of the neck clamp 1 and the angle of the flipping mechanism 12 at each time a photo is taken, and marks the horizontal coordinates, angle information and detection area type on the image data. Every 4cm movement, the first detection camera 31 and the second detection camera 34 take a set of photos, which includes 5 photos. With the flat side of the guitar neck 8 facing down as 0 degrees, the flipping mechanism 12 drives the guitar neck 8 to rotate within a range of ±90 degrees. Every 45 degrees, the first detection camera 31 and the second detection camera 34 take an image. The detection area division is different for guitar necks 8 of different specifications. Before polishing the guitar neck 8, the specifications and model of the guitar neck 8 are input through the interactive device 5, and the area division template stored in the cloud server 7 is called. The area division template specifies the detection area range of the image taken at each position.

[0070] Furthermore, the steps for the cross-sectional shape defect identification unit to identify surface defects on the guitar neck 8 are as follows:

[0071] Step S1: Convert the acquired raw image to grayscale to simplify subsequent processing.

[0072] Step S2: Remove noise interference from the image using a filtering algorithm to smooth the image and prevent noise from affecting the recognition of light spot contours;

[0073] Step S3: Use an edge detection algorithm, such as the Canny algorithm, to extract the edge information of the light spot image and initially outline the contour of the light spot;

[0074] Step S4: Perform contour tracking on the results obtained from edge detection to determine the complete light spot contour curve. During the tracking process, record the coordinate information of each point on the contour.

[0075] Step S5: Perform symmetry analysis on the coordinates of each point on the light spot contour, and report the detection when the symmetry deviation distance exceeds the threshold.

[0076] Furthermore, the positioning adjustment module 62 includes a fixture movement control unit 621, an angle control unit 622, a defect image information query unit 623, and a track coordinate conversion unit 624;

[0077] The clamp movement control unit 621 is used to control the base drive device 2 to adjust the position of the neck clamp 1, and the angle control unit 622 is used to control the flipping mechanism 12 to adjust the angle of the guitar neck 8.

[0078] The defect image information query unit 623 obtains the fixture track coordinate information and fixture angle information of each detected defect image data annotation;

[0079] The track coordinate conversion unit 624 converts the acquired fixture track coordinate information at the detection device 3 into fixture track coordinate information at the grinding device 4. When further grinding is required at the detected defect location, the neck fixture 1 is controlled to move to the converted track coordinate.

[0080] Furthermore, the specific steps for polishing are as follows:

[0081] Step S1: Obtain the feedback of the defective area number. The base drive device 2 drives the neck clamp 1 to move, moving the defective area directly below the polishing belt 424. The flipping mechanism 12 drives the guitar neck 8 to rotate, so that the defective area faces upward.

[0082] Step S2: The horizontal drive mechanism 431 drives the clamping wheel 433 to move directly above the defect area;

[0083] Step S3: The pressure roller 433 descends, pressing the polishing belt 424 onto the surface of the guitar neck 8, reading the polishing plan, and adjusting the pressure.

[0084] Step S4: Start the polishing motor 422, read the polishing plan, adjust the speed of the polishing motor 422 according to the defect type, the polishing motor 422 drives the pulley 423 to rotate, the pulley 423 drives the polishing belt 424 to rotate, and the polishing belt 424 polishes the surface of the guitar neck 8.

[0085] The beneficial effects of the guitar neck polishing machine of the present invention are as follows: Through a first detection camera and a second detection camera, the guitar neck can be photographed from different angles to obtain images of the neck surface. The first detection camera detects defects on the neck surface, while the second detection camera, in conjunction with a laser marker, can identify whether there are unevenness or asymmetry on the neck surface, comprehensively and accurately detecting various problems with the neck. The flipping mechanism allows the guitar neck to rotate within a range of ±90 degrees, facilitating the capture of images from multiple angles for defect detection. It also allows the defective area to face upwards during polishing, improving the comprehensiveness and accuracy of detection and polishing. The machine boasts a high degree of automation. The base drive device drives the neck clamp to move back and forth between the detection device and the polishing device. The various modules of the controller work collaboratively with the detection device, polishing device, and base drive device, automatically controlling the polishing process based on the image detection results. This includes adjusting the position of the neck clamp, the angle of the guitar neck, the height of the polishing device, the clamping force, and the rotation speed, thus achieving automation of the polishing process. The machine is intelligent. The system generates a polishing plan by preprocessing the inspection images through an image processing module and uploading them to a cloud server. Various modules on the cloud server analyze the images, determine the type and location of defects, generate a polishing plan, and then download it to the polishing control module to control the operation of the polishing device. This eliminates the need for manual programming, improving polishing efficiency. It can adapt to different neck sizes; guitar necks of different sizes can be input via an interactive device to access a region division template on the cloud server, specifying the inspection area range for images taken at each location. This allows the polishing machine to meet the inspection and polishing needs of necks of varying sizes.

[0086] The present invention and its embodiments have been described above. This description is not restrictive. The accompanying drawings are only one embodiment of the present invention. The actual content is not limited thereto. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the spirit of the present invention, such design should fall within the protection scope of the present invention.

Claims

1. A guitar neck polishing machine, characterized in that, The device includes a neck clamp (1), a base drive device (2), a detection device (3), a polishing device (4), and an interaction device (5). The neck clamp (1) is used to fix the guitar neck (8), and the neck clamp (1) is installed on the base drive device (2). The base drive device (2) includes a slide rail (21) and a moving platform (22). The detection device (3) and the polishing device (4) are respectively located at both ends of the slide rail (21). The bottom of the moving platform (22) is provided with a groove (221), which cooperates with the slide rail (21). The moving platform (22) can move along the slide rail (21). The neck clamp (1) is installed on the moving platform (22), and the base drive device (2) is used to drive the neck clamp (1) to move back and forth between the detection device (3) and the polishing device (4). The detection device (3) includes a first detection camera (31) and a mounting bracket (32). The mounting bracket (32) includes a column (321) and a crossbar (322). The crossbar (322) is perpendicular to the slide rail (21). The bottom ends of the crossbar (322) are connected to the column (321). The two columns (321) are fixedly installed on both sides of the slide rail (21). The first detection camera (31) is fixed below the crossbar (322). The first detection camera (31) takes pictures of the surface of the guitar neck (8) and detects defects on the surface of the guitar neck (8). The interactive device (5) includes an operation panel (51) and a display screen (52). The operation panel (51) is equipped with a controller (6). The base drive device (2), the detection device (3) and the polishing device (4) are all electrically connected to the controller (6). The controller (6) is equipped with an image processing module (61), a positioning adjustment module (62), a polishing control module (63) and a data transmission module (64). The image processing module (61) is used to preprocess the image captured by the first detection camera (31); the positioning adjustment module (62) is used to control the base drive device (2) to adjust the position of the neck clamp (1) and control the flipping mechanism (12) to adjust the angle of the guitar neck (8); the polishing control module (63) is responsible for controlling the operation of the polishing device (4); the data transmission module (64) is used to interact with the cloud server (7), and the data transmission module (64) uploads the image data preprocessed by the image processing module (61) to the cloud server (7). The cloud server (7) is equipped with a database module, a defect detection module, a defect location module and a polishing scheme generation module; The database module is used to store pre-processed detection images; the defect detection module detects and identifies the detection images to determine whether defects exist and the type of defects. The defect location module sends the detected defect location to the grinding scheme generation module; the grinding scheme generation module generates a grinding scheme based on the defect coordinates located by the defect location module. The data transmission module (64) downloads the polishing scheme generated by the polishing scheme generation module from the cloud server (7) and sends it to the polishing control module (63) to control the operation of the polishing device (4); The defect detection module includes a surface defect detection unit, an edge contour defect detection unit, and a cross-sectional shape defect recognition unit; The cross-sectional shape defect identification unit is used to identify the outline shape of the light spot projected by the laser marker (33) onto the surface of the guitar neck (8), and to determine whether there is a defect in the cross-sectional shape of the guitar neck (8) based on the outline shape of the light spot; The image processing module (61) includes a detection area image cropping unit (611), an edge image stitching unit (612), and an image information marking unit (613). The detection area image cropping unit (611) crops out pixels within a fixed detection area according to a preset method. The first detection camera (31) crops out an image from the photograph taken by the first detection camera according to a preset detection area. The detection area includes a defect detection area and an edge detection area. There are two edge detection areas. The defect detection area is located between the two edge detection areas. The width of the defect detection area and the edge detection area is equal to the shooting position interval distance. The edge image stitching unit (612) stitches the edge detection area images of images taken from the same angle end to end to form a complete neck edge image; The image information marking unit (613) obtains the horizontal coordinates of the neck clamp (1) and the angle of the flipping mechanism (12) when each photo is taken, and marks the horizontal coordinates, angle information and detection area type on the image data.

2. The guitar neck polishing machine according to claim 1, characterized in that, The neck clamp (1) includes a base (11), a flipping mechanism (12), a first fixing mechanism (13), and a second fixing mechanism (14). The flipping mechanism (12) is installed at both ends of the base (11). The first fixing mechanism (13) and the second fixing mechanism (14) are respectively fixed on the two flipping mechanisms (12). The first fixing mechanism (13) and the second fixing mechanism (14) fix the two ends of the guitar neck (8) respectively.

3. A guitar neck polishing machine according to claim 2, characterized in that, The flipping mechanism (12) includes a mounting plate (121), a rotating drum (122), and a second motor (123). The mounting plate (121) has a through hole, and the rotating drum (122) is installed in the through hole through a rotating bearing. One end of the rotating drum (122) is provided with a gear ring. The shaft of the second motor (123) is connected to a gear (124), and the gear (124) meshes with the gear ring. The rotating drums (122) of the two flipping mechanisms (12) are coaxial, and the first fixing mechanism (13) and the second fixing mechanism (14) are respectively installed inside the two rotating drums (122).

4. A guitar neck polishing machine according to claim 3, characterized in that, The grinding device (4) includes a height adjustment mechanism (41), a grinding mechanism (42), and a clamping mechanism (43). The grinding mechanism (42) includes a mounting frame (421), a grinding motor (422), pulleys (423), a grinding belt (424), and a tensioning roller (425). The pulleys (423) are mounted on both sides of the mounting frame (421). The shaft of the grinding motor (422) is connected to the shaft of one of the pulleys (423). The two pulleys (423) are connected to each other. 3) The grinding belt (424) is installed on the surface; the height adjustment mechanism (41) includes a hydraulic push rod (411) and a detection sensor (412), the detection sensor (412) is located on the mounting frame (421), and the bottom sides of the mounting frame (421) are both mounted on the hydraulic push rod (411); the tension roller (425) is mounted on the mounting frame (421) by a spring, and the tension roller (425) presses on the grinding belt (424); The clamping mechanism (43) includes a horizontal drive mechanism (431), a lifting drive mechanism (432), and a clamping wheel (433). The horizontal drive mechanism (431) is a lead screw slide, which is fixed to the top of the mounting frame (421). The lifting drive mechanism (432) is installed on both sides of the lead screw slide of the horizontal drive mechanism (431). The lifting drive mechanism (432) is a threaded telescopic rod. The shaft of the clamping wheel (433) is connected to the push rod ends of the two threaded telescopic rods. The clamping wheel (433) can press the polishing belt (424) onto the surface of the guitar neck (8) under the drive of the lifting drive mechanism (432). When the polishing belt (424) rotates under the drive of the polishing motor (422), it polishes the surface of the guitar neck (8). The horizontal drive mechanism... The guide rail of the lead screw slide of (431) is perpendicular to the slide rail (21); the grinding control module (63) includes a clamping control unit (631), a height adjustment unit (632), a speed adjustment unit (633) and a grinding scheme reading unit (634). The clamping control unit (631) is used to control the operation of the clamping mechanism (43), the height adjustment unit (632) is used to control the operation of the height adjustment mechanism (41), and the speed adjustment unit (633) is used to control the speed of the grinding motor (422); the grinding scheme reading unit (634) reads the grinding scheme downloaded from the cloud server (7) and sends the corresponding control commands to the clamping control unit (631), the height adjustment unit (632) and the speed adjustment unit (633) respectively.

5. A guitar neck polishing machine according to claim 1, characterized in that, The detection device (3) further includes a laser marker (33) and a second detection camera (34). The laser marker (33) is located at the bottom of the crossbar (322). The laser marker (33) marks the guitar neck (8) with a laser line, and the direction of the laser line is perpendicular to the slide rail (21). The second detection camera (34) is installed on one side of the crossbar (322). The image processing module (61) is also used to perform image preprocessing on the image captured by the second detection camera (34).

6. A guitar neck polishing machine according to claim 1, characterized in that, The steps for the cross-sectional shape defect identification unit to identify surface defects on the guitar neck (8) are as follows: Step S1: Convert the acquired raw image to grayscale to simplify subsequent processing. Step S2: Remove noise interference from the image using a filtering algorithm to smooth the image and prevent noise from affecting the recognition of light spot contours; Step S3: Use an edge detection algorithm to extract the edge information of the light spot image and initially outline the contour of the light spot; Step S4: Perform contour tracking on the results obtained from edge detection to determine the complete light spot contour curve. During the tracking process, record the coordinate information of each point on the contour. Step S5: Perform symmetry analysis on the coordinates of each point on the light spot contour. If the symmetry deviation distance exceeds the threshold, feedback is given.

7. A guitar neck polishing machine according to claim 2, characterized in that, The positioning adjustment module (62) includes a fixture movement control unit (621), an angle control unit (622), a defect image information query unit (623), and a track coordinate conversion unit (624). The clamp movement control unit (621) is used to control the base drive device (2) to adjust the position of the neck clamp (1), and the angle control unit (622) is used to control the flipping mechanism (12) to adjust the angle of the guitar neck (8); The defect image information query unit (623) obtains the fixture track coordinate information and fixture angle information of each detected defect image data annotation; The track coordinate conversion unit (624) converts the obtained fixture track coordinate information at the detection device (3) into fixture track coordinate information at the grinding device (4). When it is necessary to further grind the detected defect location, the neck fixture (1) is controlled to move to the converted track coordinate.

8. A guitar neck polishing machine according to claim 4, characterized in that, The specific steps for polishing are as follows: Step S1: Obtain the feedback of the defective area number. The base drive device (2) drives the neck clamp (1) to move and move the defective area to directly below the polishing belt (424). The flipping mechanism (12) drives the guitar neck (8) to rotate so that the defective area faces upward. Step S2: The horizontal drive mechanism (431) drives the clamping wheel (433) to move directly above the defect area; Step S3: The pressure roller (433) is lowered, pressing the polishing belt (424) onto the surface of the guitar neck (8), reading the polishing plan, and adjusting the pressure. Step S4: Start the polishing motor (422), read the polishing plan, adjust the speed of the polishing motor (422) according to the defect type, the polishing motor (422) drives the pulley (423) to rotate, the pulley (423) drives the polishing belt (424) to rotate, and the polishing belt (424) polishes the surface of the guitar neck (8).

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