Full-automatic grinding mechanism for hubs and truck discs

Abstract

The invention discloses a full-automatic grinding mechanism for a hub and a truck disc. The full-automatic grinding mechanism comprises a machining platform. A three-axis polishing mechanical arm is fixedly installed on the upper surface of the machining platform, a workpiece fixing clamp is arranged below a polishing part of the three-axis polishing mechanical arm, and a visual recognition assembly is fixedly arranged on the side edge of the workpiece fixing clamp. In order to solve the technical problem that in the prior art, a common hub grinding mechanism is prone to being polluted by grinding dust due to the introduction of visual identification, the grinding mechanism with the automatic centering, clamping and fixing functions and the visual identification and self-cleaning linkage function is designed. Automatic cleaning of the visual lens is triggered in a mechanical linkage mode through the clamping action of the workpiece clamp, lens maintenance can be automatically completed during feeding each time, and therefore the influence of dust accumulation on the recognition precision is avoided, the production efficiency and the product consistency are improved, and the automatic polishing device is particularly suitable for an automatic polishing production line of truck discs, hubs and other large-scale and multi-model parts.

Description

Technical Field

[0001] This application relates to the field of automated machining equipment, and in particular to a fully automated grinding mechanism for wheel hubs and truck discs. Background Technology

[0002] In the manufacturing and remanufacturing of disc-shaped parts such as truck wheel hubs and brake discs, surface polishing is a critical process. Traditional manual polishing methods are inefficient, produce inconsistent quality, and operate in harsh environments. With the development of automation technology, using multi-axis robotic arms to replace manual polishing operations has become a trend.

[0003] To improve the adaptability and intelligence of automated grinding, visual recognition systems are being introduced into existing technologies. By setting up industrial cameras on robotic arms or at fixed locations to photograph and recognize workpieces, the system can automatically determine the workpiece model, locate the clamping position, and identify the area to be ground, thereby guiding the robotic arm to execute the corresponding processing program.

[0004] However, in actual grinding operations, a large amount of metal dust and debris is generated. This dust easily disperses in the air and adheres to the lenses or protective lenses of the vision recognition system. Over time, the lens transmittance will decrease significantly, resulting in blurred image quality, missing features, and ultimately causing the vision recognition system to fail to locate or misidentify the model.

[0005] In other words, existing technologies have the following technical problems: ordinary visual recognition grinding equipment is prone to lens contamination due to dust during grinding. Therefore, a fully automatic grinding mechanism for wheel hubs and truck discs is proposed to address the above problems. Summary of the Invention

[0006] This embodiment provides a fully automatic grinding mechanism for wheel hubs and truck discs to solve the problem that ordinary visual recognition grinding equipment in the prior art is prone to lens contamination due to dust during grinding.

[0007] According to one aspect of this application, a fully automated grinding mechanism for wheel hubs and truck discs is provided, including a machining platform;

[0008] A three-axis grinding robot arm is fixedly installed on the upper surface of the processing platform, and a grinding part is provided at one end of the three-axis grinding robot arm; A workpiece fixing fixture is provided below the grinding section of the three-axis grinding robot arm. The workpiece fixing fixture includes a rectangular fixing shell and a circular fixing shell. The circular fixed shell is provided with several movable and expandable contact parts; A visual recognition component is fixedly installed on the side of the workpiece fixing fixture. The visual recognition component includes a protective shell, an industrial camera, and a self-cleaning unit.

[0009] Furthermore, a circular fixed shell is fixedly connected to the upper surface of the rectangular fixed shell; A fixed disc is fixedly connected to the upper end of the circular fixed shell. Several guide grooves are provided on the fixed disc. A guide slider is slidably connected in the guide groove of the fixed disc. A contact part is fixedly provided on the upper surface of the guide slider.

[0010] Furthermore, a rotating central shaft is rotatably connected inside the circular fixed shell, and a drive disk is fixedly connected to the arc-shaped wall of the rotating central shaft. A guide groove is provided on the drive disk, and a guide post is slidably connected to the guide groove. The guide post and the guide slider are fixedly connected.

[0011] Furthermore, one end of the rotating central shaft extends into the inner cavity of the rectangular fixed shell, a drive gear is fixedly connected to one end of the rotating central shaft, a drive rack is slidably connected in the inner cavity of the rectangular fixed shell, the drive rack and the drive gear mesh with each other, and a connecting seat is fixedly connected to one side of the drive rack. A drive screw is rotatably connected inside the rectangular fixed shell. The drive screw passes through the connecting seat and is threadedly engaged with the connecting seat.

[0012] Furthermore, a mounting bracket is fixedly connected to the upper surface of the processing platform, a protective shell is fixedly connected to the top of the mounting bracket, and an industrial camera is fixedly installed in the inner cavity of the protective shell. A window is provided on one side of the protective shell, and a transparent support plate is fixedly connected to the window.

[0013] Furthermore, the self-cleaning unit of the visual recognition component includes a transparent protective strip and a cleaning tool. Several rotating guide rollers are rotatably connected in the inner cavity of the protective shell, and the transparent protective strip is sleeved between the several rotating guide rollers. Cleaning tools are fixedly attached to the outer wall of the protective casing; A linkage structure is provided between the rotating guide roller and the workpiece fixing fixture, which is used to synchronously drive the transparent protective belt to move a certain distance when the workpiece fixing fixture performs clamping or loosening actions.

[0014] Furthermore, the linkage structure includes a synchronizing pulley, a first transmission pulley, a second transmission pulley, and a transmission unit; The protective shell is rotatably connected to several synchronous pulleys, and the number of synchronous pulleys and rotating guide rollers are the same and correspond one-to-one. The synchronous pulleys and rotating guide rollers are fixedly connected, and the synchronous pulleys are connected by a synchronous belt. One of the synchronous pulleys is fixedly connected to a first transmission pulley, and a mounting bracket is fixedly installed on the side wall of the mounting bracket. A second transmission pulley is rotatably connected to the mounting bracket, and a transmission belt is sleeved between the second transmission pulley and the first transmission pulley.

[0015] Furthermore, the cleaning tools include connecting feet, fixing guide rods and crossbars, and cleaning blocks; The connecting feet are fixedly installed on the outer wall of the protective shell. A fixed guide rod is fixedly connected to one side of the connecting feet. A horizontal plate is slidably connected between the fixed guide rods on both sides. A cleaning block is fixedly connected to one side of the horizontal plate.

[0016] Furthermore, a connecting circular plate is fixedly connected to one end of the fixed guide rod, and one end of a spring is fixedly connected to one side of the connecting circular plate, while the other end of the spring is fixedly connected to the horizontal plate.

[0017] Furthermore, the cleaning block has several grooves to form several scraper blades.

[0018] In order to solve the technical problem in the prior art that ordinary wheel hub grinding mechanisms are prone to visual recognition failure due to grinding dust contamination, this application designs a grinding mechanism with automatic centering and clamping functions, and visual recognition and self-cleaning linkage. The mechanical linkage of the workpiece clamping action triggers the automatic cleaning of the vision lens, which can automatically complete lens maintenance every time the material is loaded, thereby avoiding the impact of dust accumulation on recognition accuracy, and thus improving production efficiency and product consistency. It is particularly suitable for automated grinding production lines for large and multi-model parts such as truck discs and wheel hubs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of one embodiment of this application; Figure 2 This is a perspective view of a three-axis grinding robot arm according to an embodiment of this application; Figure 3 This is an internal schematic diagram of a three-axis grinding robot arm according to an embodiment of this application; Figure 4 This is a schematic diagram of the structure of a workpiece fixing fixture according to an embodiment of this application; Figure 5 This is a schematic diagram of the internal structure of a workpiece fixing fixture according to an embodiment of this application; Figure 6 This is a three-dimensional internal perspective view of a rectangular fixing shell according to an embodiment of this application; Figure 7 This is a schematic internal plan view of a rectangular fixing shell according to an embodiment of this application; Figure 8 This is an overall schematic diagram of a visual recognition component according to an embodiment of this application; Figure 9 This is a schematic diagram of the internal structure of a protective casing according to an embodiment of this application; Figure 10 This is one embodiment of the present application. Figure 8 A magnified structural diagram of point A; Figure 11 This is a schematic diagram of the structure of a cleaning tool according to an embodiment of this application.

[0021] In the picture: 1. Processing platform; 2. Three-axis grinding robotic arm; 201. Support plate frame; 202. X-axis guide rod; 204. X-axis screw; 205. X-axis drive motor; 206. Z-axis connecting arm; 207. First moving plate; 208. Y-axis connecting arm; 209. Second moving plate; 210. First drive slider; 211. Z-axis screw; 212. Z-axis drive motor; 213. Second drive slider; 214. Y-axis screw; 215. Y-axis drive motor; 216. Grinding motor; 217. Grinding tool; 3. Install the base; 4. Workpiece fixing fixture; 401. Rectangular fixing shell; 402. Circular fixing shell; 403. Fixing disc; 404. Guide slider; 405. Contact part; 406. Rotating central shaft; 407. Drive disc; 408. Guide groove; 409. Guide post; 410. Drive gear; 411. Drive rack; 412. Connecting seat; 413. Drive screw; 414. First transmission gear; 415. Motor mounting bracket; 416. Servo motor; 417. Second transmission gear; 5. Workpiece; 6. Visual recognition components; 601. Mounting bracket; 602. Protective housing; 6021. Window; 603. Transparent support plate; 604. Industrial camera; 605. Rotating guide roller; 606. Transparent protective belt; 607. Cleaning tool; 6071. Connecting feet; 6072. Fixing guide rod; 6073. Connecting circular plate; 6074. Horizontal plate; 6075. Spring; 6076. Cleaning block; 6077. Groove; 608. 609. Synchronous pulley; 610. Synchronous belt; 611. First transmission pulley; 612. Mounting bracket; 613. Bevel gear A; 614. Second transmission pulley; 615. First transmission rod; 616. Bevel gear C; 617. Support bracket; 618. Second transmission rod; 619. Bevel gear D; 620. Bevel gear E; 621. Third transmission rod; 622. Bevel gear F; 623. Transmission belt. Detailed Implementation

[0022] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0023] Please see Figure 1 and Figure 2 As shown, the fully automatic grinding mechanism for wheel hubs and truck discs includes a processing platform 1; A three-axis grinding robot arm 2 is fixedly installed on the upper surface of the processing platform 1. One end of the three-axis grinding robot arm 2 is provided with a grinding part for precision grinding of the surface of the workpiece 5. A workpiece fixing fixture 4 is provided below the grinding section of the three-axis grinding robot arm 2. The workpiece fixing fixture 4 includes a rectangular fixing shell 401 and a circular fixing shell 402. The circular fixed shell 402 is provided with several movable and expandable contact parts 405, which are used to center and tighten the center hole of the workpiece 5. A vision recognition component 6 is fixedly installed on the side of the workpiece fixing fixture 4. The vision recognition component 6 includes a protective shell 602, an industrial camera 604, and a self-cleaning unit. It is used to automatically identify the workpiece model and posture and guide the robotic arm to execute the corresponding grinding program. Its self-cleaning unit can automatically maintain the cleanliness of the lens and ensure the reliability of recognition.

[0024] This application uses the mechanical linkage of the workpiece clamping action to trigger the automatic cleaning of the vision lens, which can automatically complete the lens maintenance every time the material is loaded, thereby avoiding the impact of dust accumulation on recognition accuracy, and thus improving production efficiency and product consistency. It is particularly suitable for automated grinding production lines for large, multi-model parts such as truck discs and wheel hubs.

[0025] In a preferred embodiment of this application, see [reference] Figure 2 As shown, the three-axis grinding robot arm 2 includes an X-axis guide rod 202, an X-axis slide block 203, a Z-axis connecting arm 206, and a Y-axis connecting arm 208.

[0026] Support plates 201 are fixedly connected to both sides of the upper surface of the processing platform 1. An X-axis guide rod 202 is fixedly connected between the two support plates 201. The X-axis guide rod 202 passes through the X-axis slide 203 and slides with the X-axis slide 203 to form a moving pair along the X-axis, which is used to provide the grinding part with the degree of freedom of movement along the workpiece axis.

[0027] Furthermore, an X-axis screw 204 is rotatably connected between the two support plates 201. The X-axis screw 204 passes through the X-axis slide 203 and is threadedly engaged with the X-axis slide 203. An X-axis drive motor 205 is fixedly installed on one side of the support plate 201. The output shaft end of the X-axis drive motor 205 is connected to one end of the X-axis screw 204 for transmission, which is used to provide X-axis drive. By rotating the X-axis drive motor 205 forward and reverse, the X-axis slide 203 can be driven to reciprocate along the X-axis guide rod 202, thereby driving the entire subsequent Y, Z axes and grinding part to be positioned in the X-axis direction.

[0028] As a preferred technical solution, please refer to Figure 2 and Figure 3 As shown, a Z-axis connecting arm 206 is fixedly connected to one side wall of the X-axis slide block 203. The Z-axis connecting arm 206 has an inner cavity. A first driving slider 210 is slidably connected in the inner cavity of the Z-axis connecting arm 206. A first moving plate 207 is slidably connected to the outer wall of the Z-axis connecting arm 206. The first moving plate 207 is fixedly connected to the first driving slider 210. A Y-axis connecting arm 208 is fixedly connected to the side wall of the first moving plate 207 to transmit the movement of the Z-axis to the Y-axis connecting arm 208.

[0029] A Z-axis screw 211 is rotatably connected between the upper and lower walls of the inner cavity of the Z-axis connecting arm 206. The Z-axis screw 211 passes through the first drive slider 210 and is threadedly engaged with the first drive slider 210. A Z-axis drive motor 212 is also fixedly installed at the upper end of the Z-axis connecting arm 206. The end of the output shaft of the Z-axis drive motor 212 is fixedly connected to the top end of the Z-axis screw 211 to provide Z-axis drive.

[0030] With this technical solution, when the Z-axis drive motor 212 is working, it can drive the Z-axis screw 211 to rotate, thereby causing the first drive slider 210 and the first moving plate 207 fixed thereto to slide up and down along the Z-axis connecting arm 206, thus realizing the positioning of the grinding part in the vertical direction.

[0031] Furthermore, see Figure 3 As shown, the Y-axis connecting arm 208 has an internal cavity, and a second driving slider 213 is slidably connected in the internal cavity of the Y-axis connecting arm 208. A second moving plate 209 is slidably connected at the bottom surface of the Y-axis connecting arm 208, and the second moving plate 209 is fixedly connected to the second driving slider 213.

[0032] A Y-axis screw 214 is rotatably connected between the two side walls of the inner cavity of the Y-axis connecting arm 208. The Y-axis screw 214 passes through the second drive slider 213 and is threadedly engaged with the second drive slider 213. A Y-axis drive motor 215 is fixedly installed at one end of the Y-axis connecting arm 208. The end of the output shaft of the Y-axis drive motor 215 is fixedly connected to one end of the Y-axis screw 214.

[0033] With this technical solution, when the Y-axis drive motor 215 is working, it can drive the Y-axis screw 214 to rotate, causing the second drive slider 213 and the second moving plate 209 to move horizontally along the Y-axis connecting arm 208, thereby achieving the positioning of the grinding part in the front-to-back direction. Combined with the X, Y, and Z-axis motion, the grinding part can reach any position within the workspace.

[0034] In a preferred embodiment of this application, see [reference] Figure 3 As shown, the grinding section of the three-axis grinding robot arm 2 includes a grinding motor 216 and a grinding tool 217. The grinding motor 216 is fixedly mounted on the bottom surface of the second moving plate 209. The grinding tool 217 is fixedly mounted on the end of the output shaft of the grinding motor 216 to provide the rotational power and execution end required for grinding.

[0035] Specifically, the grinding tool 217 can be a grinding wheel, polishing wheel, wire wheel, etc., used to adapt to grinding or polishing processes with different roughness requirements.

[0036] In a preferred embodiment of this application, see [reference] Figure 4 As shown, a circular fixed shell 402 is fixedly connected to the upper surface of the rectangular fixed shell 401, and a mounting base 3 is fixedly connected to the bottom surface of the rectangular fixed shell 401. The mounting base 3 is fixedly installed on the upper surface of the processing platform 1.

[0037] A fixed disk 403 is fixedly connected to the upper end of the circular fixed shell 402. The fixed disk 403 is provided with several guide grooves, which are radially distributed. A guide slider 404 is slidably connected in the guide groove of the fixed disk 403. A contact part 405 is fixedly provided on the upper surface of the guide slider 404 for applying radial tension force to the inner wall of the center hole of the workpiece 5 during sliding.

[0038] Specifically, the contact part 405 can be an arc-shaped wear-resistant liner or roller, used to increase friction and protect the inner wall of the workpiece 5.

[0039] Further, see Figure 5 As shown, in order to achieve synchronous radial movement of all contact parts 405, a rotating central shaft 406 is rotatably connected in the inner cavity of the circular fixed shell 402. A drive disk 407 is fixedly connected to the arc-shaped wall of the rotating central shaft 406. A guide groove 408 is provided on the drive disk 407. A guide post 409 is slidably connected to the guide groove 408. The guide post 409 is fixedly connected to the guide slider 404, forming a slant linkage mechanism that converts the rotational motion of the rotating central shaft 406 into the radial linear motion of the guide slider 404.

[0040] Specifically, the guide groove 408 is inclined, and several guide grooves 408 are radially and evenly distributed on the drive disk 407. When the rotating central shaft 406 drives the drive disk 407 to rotate, the guide column 409 slides along the inclined guide groove 408, thereby forcing the guide slider 404 connected to it to move radially along the radial guide groove of the fixed disk 403, thereby driving all contact parts 405 to expand or contract synchronously, realizing the automatic centering and clamping or loosening of the workpiece.

[0041] Furthermore, in order to achieve the rotation of the central shaft 406, see [reference needed]. Figure 6 and Figure 7 As shown, one end of the rotating central shaft 406 extends into the inner cavity of the rectangular fixed shell 401. A drive gear 410 is fixedly connected to one end of the rotating central shaft 406. A drive rack 411 is also slidably connected in the inner cavity of the rectangular fixed shell 401. The drive rack 411 and the drive gear 410 mesh with each other. A connecting seat 412 is also fixedly connected to one side of the drive rack 411.

[0042] A drive screw 413 is rotatably connected inside the rectangular fixed shell 401. The drive screw 413 passes through the connecting seat 412 and is threadedly engaged with the connecting seat 412, and is used to convert the rotational motion of the drive screw 413 into the linear motion of the drive rack 411.

[0043] A servo motor 416 is fixedly mounted on a rectangular fixed housing 401. The output shaft of the servo motor 416 is connected to the drive screw 413 for transmission, and is used to provide power for the clamping and releasing action of the entire fixture.

[0044] Specifically, a motor mounting bracket 415 is fixedly connected to the upper surface of the rectangular fixed housing 401. A servo motor 416 is fixedly mounted on one side of the motor mounting bracket 415. A second transmission gear 417 is fixedly connected to the end of the output shaft of the servo motor 416. A first transmission gear 414 is fixedly connected to one end of the drive screw 413. The first transmission gear 414 and the second transmission gear 417 mesh with each other to transmit the power of the servo motor 416.

[0045] With this technical solution, when the servo motor 416 starts, it drives the drive screw 413 to rotate sequentially through the second transmission gear 417 and the first transmission gear 414, which drives the connecting seat 412 and the drive rack 411 to move linearly, thereby driving the drive gear 410 to rotate with the rotating central shaft 406, and finally realizing the expansion or contraction of the contact part 405 to complete the automatic clamping of the workpiece.

[0046] In a preferred embodiment of this application, see [reference] Figure 8 and Figure 9As shown, a mounting bracket 601 is fixedly connected to the upper surface of the processing platform 1, a protective shell 602 is fixedly connected to the top of the mounting bracket 601, and an industrial camera 604 is fixedly installed in the inner cavity of the protective shell 602.

[0047] A window 6021 is provided on one side of the protective housing 602, and a transparent support plate 603 is fixedly connected to the window 6021. This allows the industrial camera 604 to be protected while simultaneously photographing the workpiece through the window. The industrial camera 604 allows for image acquisition of the workpiece 5 fixed on the fixture before grinding. The image information is then transmitted to the control system to identify the workpiece model, locate the area to be ground, and generate the corresponding grinding path.

[0048] Specifically, the industrial camera 604 is used to acquire high-resolution images of the workpiece. In order to achieve accurate recognition, the industrial camera 604 is also connected to a light source to provide uniform illumination to the workpiece and enhance image features.

[0049] In one specific embodiment of this application, the self-cleaning unit of the visual recognition component 6 includes a transparent protective strip 606 and a cleaning tool 607. A plurality of rotating guide rollers 605 are rotatably connected in the inner cavity of the protective housing 602. The transparent protective strip 606 is sleeved between the plurality of rotating guide rollers 605 to form a recyclable protective layer covering the outside of the transparent support plate 603.

[0050] A cleaning tool 607 is fixedly connected to the outer wall of the protective housing 602. The cleaning tool 607 contacts the outer surface of the transparent protective strip 606 and is used to scrape or wipe the dust adhering to the outer surface of the transparent protective strip 606.

[0051] A linkage structure is provided between the rotating guide roller 605 and the workpiece fixing fixture 4, which is used to synchronously drive the transparent protective belt 606 to move a certain distance when the workpiece fixing fixture 4 performs clamping or loosening actions, so that the contaminated area is moved away and the cleaned area is moved to the window position.

[0052] With this technical solution, when the workpiece or fixture is changed, the linkage structure is triggered, which moves the transparent protective strip 606 so that its surface is cleaned by the cleaning tool 607. Then, a clean protective strip area is moved to the front of the window, which can ensure that the industrial camera 604 has a clean observation window before each shot. This effectively solves the problem of recognition failure caused by polishing dust contaminating the lens, and achieves maintenance-free continuous and reliable operation.

[0053] Further, see Figure 8 and Figure 10 As shown, the linkage structure includes a synchronous pulley 608, a first transmission pulley 610, a second transmission pulley 613, and a transmission unit.

[0054] A number of synchronous pulleys 608 are rotatably connected to the protective shell 602. The number of synchronous pulleys 608 and the number of rotating guide rollers 605 are the same and correspond one-to-one. The synchronous pulleys 608 and the rotating guide rollers 605 are fixedly connected. A synchronous belt 609 is sleeved between the synchronous pulleys 608 to ensure that all rotating guide rollers 605 rotate synchronously, so that the transparent protective belt 606 can move smoothly without slipping.

[0055] One of the synchronous pulleys 608 is fixedly connected to a first transmission pulley 610. A mounting bracket 611 is also fixedly installed on the side wall of the mounting bracket 601. A second transmission pulley 613 is rotatably connected to the mounting bracket 611. A transmission belt 623 is sleeved between the second transmission pulley 613 and the first transmission pulley 610.

[0056] With this technical solution, when the second transmission wheel 613 is driven, the power is transmitted to the synchronous pulley 608 through the transmission belt 623 and the first transmission wheel 610, thereby driving the entire transparent protective belt 606 transmission system to realize the renewal of the protective belt.

[0057] Furthermore, see Figure 8 and Figure 10 As shown, the transmission unit includes a bevel gear A612, a first transmission rod 614, a second transmission rod 618, and a third transmission rod 621.

[0058] A bevel gear A612 is fixedly connected to the second transmission wheel 613, and a first transmission rod 614 is rotatably connected to the side wall of the mounting bracket 601. A bevel gear B615 is fixedly connected to one end of the first transmission rod 614. The bevel gear B615 and the bevel gear A612 mesh with each other to realize one power transmission and direction conversion.

[0059] A bevel gear C616 is fixedly connected to the lower end of the first transmission rod 614. A support bracket 617 is fixedly connected to the upper surface of the processing platform 1. A second transmission rod 618 is rotatably connected to the support bracket 617. A bevel gear D619 is fixedly connected to one end of the second transmission rod 618. The bevel gear D619 and the bevel gear C616 mesh with each other to realize secondary power transmission and direction conversion. A bevel gear E620 is fixedly connected to the other end of the second transmission rod 618.

[0060] One end of the third transmission rod 621 is fixedly connected to one end of the drive screw 413, and the other end of the third transmission rod 621 is fixedly connected to a bevel gear F622. The bevel gear F622 meshes with the bevel gear E620 to ultimately transmit the rotational motion of the drive screw 413 to the transmission system of the cleaning unit.

[0061] Through the above technical solution, when the servo motor 416 drives the drive screw 413 to rotate to perform the clamping or releasing action of the fixture, the drive screw 413 simultaneously drives the third transmission rod 621 to rotate. The power is transmitted sequentially through bevel gear F622 and bevel gear E620, second transmission rod 618, bevel gear D619 and bevel gear C616, first transmission rod 614, bevel gear B615 and bevel gear A612, second transmission wheel 613 and first transmission wheel 610, and finally to synchronous wheel 608. This can accurately convert one clamping / releasing action of the fixture into the action of the transparent protective belt 606 moving a fixed step, thereby realizing the pure mechanical linkage between the clamping action and the lens cleaning action. No additional sensors and controllers are required, the structure is reliable, and the cycle is synchronized.

[0062] As a preferred embodiment of cleaning tool 607, see [reference] Figure 11 As shown, the cleaning tool 607 includes a connecting foot 6071, a fixing guide rod 6072, a cross plate 6074, and a cleaning block 6076.

[0063] The connecting foot 6071 is fixedly installed on the outer wall of the protective shell 602. A fixed guide rod 6072 is fixedly connected to one side of the connecting foot 6071. A horizontal plate 6074 is slidably connected between the two fixed guide rods 6072. A cleaning block 6076 is fixedly connected to one side of the horizontal plate 6074. The cleaning block 6076 is made of flexible scraper or sponge and is used to contact the surface of the transparent protective strip 606 and scrape off the dust attached to its surface.

[0064] One end of the fixed guide rod 6072 is also fixedly connected to a connecting circular plate 6073. One side of the connecting circular plate 6073 is fixedly connected to one end of a spring 6075. The other end of the spring 6075 is fixedly connected to a horizontal plate 6074. This provides a constant elastic pressure towards the transparent protective strip 606 for the horizontal plate 6074 and the cleaning block 6076, ensuring that the cleaning block 6076 always maintains effective contact with the surface of the protective strip and can adapt to any minor undulations that may exist in the protective strip.

[0065] The cleaning block 6076 has several grooves 6077 forming several scrapers. With the clamping force of the spring 6075, the flexible scrapers on the cleaning block 6076 can be tightly attached to the surface of the moving transparent protective strip 606 to effectively scrape off the dust. The scraped dust can fall into the grooves 6077 for temporary storage to avoid secondary pollution.

[0066] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this application does not involve any improvement to the software and methods.

[0067] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A fully automatic grinding mechanism for wheel hubs and truck discs, characterized in that: Including the processing platform (1); A three-axis grinding robot arm (2) is fixedly installed on the upper surface of the processing platform (1), and a grinding part is provided at one end of the three-axis grinding robot arm (2). The workpiece fixing fixture (4) is provided below the grinding part of the three-axis grinding robot arm (2). The workpiece fixing fixture (4) includes a rectangular fixing shell (401) and a circular fixing shell (402). The circular fixed shell (402) is provided with a plurality of movable and expandable contact portions (405). A visual recognition component (6) is fixedly installed on the side of the workpiece fixing fixture (4). The visual recognition component (6) includes a protective shell (602), an industrial camera (604), and a self-cleaning unit.

2. The fully automatic grinding mechanism for wheel hubs and truck discs according to claim 1, characterized in that: A circular fixed shell (402) is fixedly connected to the upper surface of the rectangular fixed shell (401). The upper end of the circular fixed shell (402) is fixedly connected to a fixed disc (403). The fixed disc (403) is provided with a plurality of guide grooves. A guide slider (404) is slidably connected in the guide groove of the fixed disc (403). A contact part (405) is fixedly provided on the upper surface of the guide slider (404).

3. The fully automatic grinding mechanism for wheel hubs and truck discs according to claim 2, characterized in that: The inner cavity of the circular fixed shell (402) is also rotatably connected to a rotating central shaft (406). A driving disk (407) is fixedly connected to the arc-shaped wall of the rotating central shaft (406). A guide groove (408) is provided on the driving disk (407). A guide post (409) is slidably connected to the guide groove (408). The guide post (409) is fixedly connected to the guide slider (404).

4. The fully automatic grinding mechanism for wheel hubs and truck discs according to claim 3, characterized in that: One end of the rotating central shaft (406) extends into the inner cavity of the rectangular fixed shell (401). A drive gear (410) is fixedly connected to one end of the rotating central shaft (406). A drive rack (411) is also slidably connected in the inner cavity of the rectangular fixed shell (401). The drive rack (411) meshes with the drive gear (410). A connecting seat (412) is also fixedly connected to one side of the drive rack (411). A drive screw (413) is rotatably connected to the inner cavity of the rectangular fixed shell (401). The drive screw (413) passes through the connecting seat (412) and is threadedly engaged with the connecting seat (412).

5. The fully automatic grinding mechanism for wheel hubs and truck discs according to claim 1, characterized in that: A mounting bracket (601) is fixedly connected to the upper surface of the processing platform (1), and a protective shell (602) is fixedly connected to the top of the mounting bracket (601). An industrial camera (604) is fixedly installed in the inner cavity of the protective shell (602). A window (6021) is provided on one side of the protective shell (602), and a transparent support plate (603) is fixedly connected to the window (6021).

6. The fully automatic grinding mechanism for wheel hubs and truck discs according to claim 5, characterized in that: The self-cleaning unit of the visual recognition component (6) includes a transparent protective strip (606) and a cleaning tool (607). A plurality of rotating guide rollers (605) are rotatably connected in the inner cavity of the protective shell (602), and the transparent protective strips (606) are sleeved between the plurality of rotating guide rollers (605). A cleaning tool (607) is fixedly connected to the outer wall of the protective shell (602); A linkage structure is provided between the rotating guide roller (605) and the workpiece fixing fixture (4) to synchronously drive the transparent protective belt (606) to move a certain distance when the workpiece fixing fixture (4) performs clamping or loosening actions.

7. The fully automatic grinding mechanism for wheel hubs and truck discs according to claim 6, characterized in that: The linkage structure includes a synchronous pulley (608), a first transmission pulley (610), a second transmission pulley (613), and a transmission unit; A plurality of synchronous pulleys (608) are rotatably connected to the protective shell (602). The number of the synchronous pulleys (608) and the number of rotating guide rollers (605) are the same and correspond one-to-one. The synchronous pulleys (608) and the rotating guide rollers (605) are fixedly connected. A synchronous belt (609) is sleeved between the synchronous pulleys (608). One of the synchronous pulleys (608) is fixedly connected to a first transmission pulley (610), and a mounting bracket (611) is also fixedly installed on the side wall of the mounting bracket (601). A second transmission pulley (613) is rotatably connected to the mounting bracket (611), and a transmission belt (623) is sleeved between the second transmission pulley (613) and the first transmission pulley (610).

8. The fully automatic grinding mechanism for wheel hubs and truck discs according to claim 6, characterized in that: The cleaning tool (607) includes a connecting foot (6071), a fixed guide rod (6072), a cross plate (6074), and a cleaning block (6076). The connecting foot (6071) is fixedly installed on the outer wall of the protective shell (602). A fixed guide rod (6072) is fixedly connected to one side of the connecting foot (6071). A horizontal plate (6074) is slidably connected between the two fixed guide rods (6072). A cleaning block (6076) is fixedly connected to one side of the horizontal plate (6074).

9. The fully automatic grinding mechanism for wheel hubs and truck discs according to claim 8, characterized in that: One end of the fixed guide rod (6072) is also fixedly connected to a connecting circular plate (6073), and one end of a spring (6075) is fixedly connected to one side of the connecting circular plate (6073). The other end of the spring (6075) is fixedly connected to the horizontal plate (6074).

10. The fully automatic grinding mechanism for wheel hubs and truck discs according to claim 8, characterized in that: The cleaning block (6076) has several grooves (6077) formed to form several scrapers.

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