A wheel hub flange marking apparatus for traceability

Abstract

The present application relates to marking equipment technical field, especially a kind of wheel hub shaft head flange marking equipment for traceability identification, including processing table and control terminal being set on processing table, the automatic marking mechanism for being used to carry out laser marking to flange disc circumferential side is movably installed on the processing table, the chuck driving mechanism for coaxially clamping flange disc and driving it to rotate in vertical plane is equipped below automatic marking mechanism, the guide support mechanism for carrying out gravity self-centering guiding to flange disc is equipped in one side of chuck driving mechanism.The present application utilizes the periodic up-and-down jumping generated when flange disc is low-speed idling on chuck, through the cooperative matching of floating support assembly, elastic reset element and displacement sensor, successfully converts the radial eccentricity of flange disc into intuitive displacement fluctuation signal, can accurately judge and alarm interception to clamping quality before processing, effectively avoids the problems of marking deviation and workpiece scrapping caused by clamping out of position.

Description

Technical Field

[0001] This invention relates to the field of marking equipment technology, and in particular to a wheel hub axle flange marking device for traceability identification. Background Technology

[0002] During the production and processing of wheel hub axle flanges, it is usually necessary to mark QR codes or character markings on the circumference of the flange to achieve traceability and identification throughout the product's life cycle. Currently, laser marking machines are commonly used in the industry to mark flanges.

[0003] Existing flange marking equipment typically uses a three-jaw chuck to clamp and fix the flange, and pushes the flange into the chuck visually. However, when pushing in manually, it is difficult to ensure that the center of the flange is precisely aligned with the center line of the chuck's main shaft, which can easily cause radial eccentricity. Furthermore, after the flange is clamped on the chuck, there may be a slight tilt between its end face and the chuck's end face, i.e., axial wobble. If these problems are not detected and corrected in time, the distance between the laser marking focus and the flange surface will drift, resulting in uneven marking depth, blurred markings, or even misaligned markings, which directly affects the subsequent scanning and traceability effects. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a wheel hub axle flange marking device for traceability identification. It solves the technical problems of existing marking devices being unable to automatically detect flange clamping eccentricity and sway, resulting in unstable marking accuracy and low traceability identification rate. It has the advantages of high-precision self-centering guidance, real-time deflection detection and error prevention, and automated traceability identification.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a wheel hub axle flange marking device for traceability and identification, comprising a processing table and a control terminal disposed on the processing table. An automatic marking mechanism for laser marking the circumferential side of the flange is movably mounted on the processing table. Below the automatic marking mechanism is a chuck drive mechanism for coaxially clamping the flange and driving it to rotate in a vertical plane. On one side of the chuck drive mechanism is a guide support mechanism for gravity-driven self-centering guidance of the flange. The guide support mechanism is provided with a floating support mechanism for providing support to the flange and detecting its deflection state in real time. The guide support mechanism includes a support base and an arc-shaped support disposed on the support base. The guide platform and the floating support mechanism include a roller bracket, a bearing seat slidably mounted on the roller bracket, and a support roller rotatably mounted on the bearing seat for rolling contact with the outer circumferential surface of the flange. An elastic reset element is provided between the roller bracket and the bearing seat to provide an upward reset force for the bearing seat. A displacement sensor for detecting the vertical displacement of the support roller is fixedly mounted on the upper end of the bearing seat. The control terminal is electrically connected to the automatic marking mechanism, the chuck drive mechanism and the displacement sensor respectively. The control terminal receives the vertical displacement change fed back by the displacement sensor when the flange is idling, and uses the fluctuation amplitude of this value to determine whether the flange has radial eccentricity, thereby deciding whether to allow the automatic marking mechanism to perform the marking action.

[0006] Preferably, industrial cameras are symmetrically mounted on the support base for real-time acquisition of marking images of the flanges after marking. The control terminal is electrically connected to the industrial cameras to receive and store the marking images for traceability identification.

[0007] Preferably, the outer side wall of the supporting roller is provided with an axial groove for limiting the stroke, and a positioning slip ring for abutting against the end face of the flange is movably sleeved on the outside of the supporting roller. The inner side wall of the positioning slip ring is slidably engaged in the axial groove. A return spring and a deflection sensor are provided in the axial groove. The deflection sensor is used to detect the axial displacement of the positioning slip ring in the axial groove. The control terminal is electrically connected to the deflection sensor.

[0008] Preferably, the chuck drive mechanism includes a drive base fixedly mounted on the machining table, a drive spindle box drivenly connected to the drive base, a chuck end panel for carrying the flange coaxially fixedly mounted on the drive spindle box, a guide spindle for inserting into the center hole of the flange for initial positioning fixedly mounted at the center of the chuck end panel, and a plurality of radial locking blocks for clamping the flange slidably mounted on the outer side of the guide spindle. The plurality of radial locking blocks are evenly distributed along the circumference of the guide spindle. Utilizing the centrifugal force and air pressure thrust when the chuck end panel rotates, they can open outwards synchronously, thereby achieving high-rigidity coaxial locking of the flange.

[0009] Preferably, the drive spindle housing integrates an air pump assembly, which is connected to an exhaust pipe for inflating the guide spindle. The air pump assembly is electrically connected to a control terminal. When the air pump assembly inflates the guide spindle with high-pressure gas through the exhaust pipe, multiple radial locking blocks extend outward simultaneously to fix the flange.

[0010] Preferably, the automatic marking mechanism includes a vertical column fixedly installed on the processing table, a lifting screw rotatably connected inside the vertical column, an adjusting slider threadedly connected to the outside of the lifting screw, a marking component slidably installed on the outside of the vertical column via the adjusting slider, and a drive motor fixedly installed on the top of the vertical column for driving the lifting screw to rotate along its own axis. The drive motor is electrically connected to a control terminal for driving the marking component to move up and down along the vertical column.

[0011] Preferably, a laser head for emitting a laser beam is installed at the bottom of the marking assembly. A fine-tuning mechanism for adjusting the horizontal position of the laser head is provided between the laser head and the marking assembly. The fine-tuning mechanism includes a fine-tuning screw and a sliding seat. The sliding seat is slidably disposed at the bottom of the marking assembly. The fine-tuning screw is threadedly connected to the sliding seat and is used to drive the sliding seat to move in the horizontal direction, so that the laser head can move along the thickness direction of the flange. Through the micro-distance conversion of the mechanical thread, the laser focus is precisely aligned at the micrometer level in the thickness direction of the flange, preventing laser defocusing caused by flange thickness tolerance.

[0012] Preferably, the support base has an installation slot for accommodating the support roller and roller bracket. The concave radius of the arc-shaped guide platform is adapted to the standard outer radius of the flange to be processed, thereby forcing the center of the flange to coincide with the central axis of the chuck drive mechanism, achieving physical self-centering error prevention without manual intervention.

[0013] Preferably, a guide column is vertically fixed on the roller bracket, the bearing seat is slidably sleeved on the outside of the guide column, and the elastic reset element is a compression spring. The compression spring is sleeved on the outside of the guide column, the bottom end of the compression spring abuts against the bottom surface of the roller bracket, and the top end of the compression spring abuts against the bottom surface of the bearing seat. The guide column provides precise linear guidance for the up and down floating of the bearing seat, and the compression spring provides a constant preload, so that the support roller can closely fit and follow the change of outer diameter in real time when the flange produces radial eccentricity, thereby improving the data sampling accuracy of the displacement sensor.

[0014] Preferably, the control terminal includes a signal receiving module, a comparison and judgment module, and an execution control module. The signal receiving module is electrically connected to the displacement sensor and the deflection sensor, respectively, and is used to receive vertical displacement signals and axial displacement signals. The comparison and judgment module is used to compare the received displacement signals with a preset threshold. The execution control module is electrically connected to the automatic marking mechanism and the industrial camera, respectively, and is used to control the automatic marking mechanism to stop marking and output an alarm signal when the displacement signal exceeds the preset threshold, and to control the laser head to start marking when the displacement signal does not exceed the preset threshold, and simultaneously control the industrial camera to collect the marked image for traceability verification.

[0015] By employing the above technical solution, the present invention provides a wheel hub axle flange marking device for traceability identification, which has at least the following beneficial effects: 1. This invention, by setting an arc-shaped guide platform with a concave arc surface, utilizes the physical characteristics of the flange's own weight to force its center to automatically coincide with the center line of the chuck spindle during the pushing process. This not only improves the feeding efficiency but also eliminates the hidden danger of eccentric marking caused by manual clamping deviation from the source, significantly improving the automation level and clamping reliability of the equipment.

[0016] 2. This invention utilizes the periodic up-and-down movement of the flange when it rotates at low speed on the chuck. Through the coordinated operation of the floating support assembly, the elastic reset element and the displacement sensor, the radial eccentricity of the flange is successfully converted into an intuitive displacement fluctuation signal. This allows for accurate prediction and alarm interception of clamping quality before processing, effectively avoiding marking deviation and workpiece scrapping caused by improper clamping.

[0017] 3. The present invention adds a positioning slip ring with a reset spring and a deflection sensor to the outside of the support roller, so that it can simultaneously sense the axial runout of the flange end face on the coaxial structure of the floating detection radial runout. This makes the equipment no longer limited to single concentricity detection, but can comprehensively capture the three-dimensional spatial posture error of the workpiece, greatly improving the completeness of the pre-detection and ensuring that the laser focus can always accurately track the flange surface.

[0018] 4. This invention delivers the high-pressure gas from the air pump assembly to the inside of the guide mandrel through the exhaust pipe, thereby achieving tight clamping of the inner wall of the flange center hole. This effectively counteracts the cutting reaction force and high-frequency vibration generated during laser marking, preventing microscopic slippage of the workpiece and ensuring the smoothness and continuity of the etching trajectory from a mechanical perspective.

[0019] 5. This invention achieves precise height adjustment of the marking component through the drive motor, lifting screw, and lead screw transmission of the adjusting slider. On this basis, a fine-tuning screw and sliding seat are added, and the laser head is precisely focused in the flange thickness direction by utilizing the micro-conversion of the mechanical thread. This can effectively overcome the defocusing problem caused by flange thickness tolerance and significantly improve the clarity and adhesion of the marking.

[0020] 6. In this invention, the signal receiving module of the control terminal can acquire the physical quantities fed back by the displacement sensor and the deflection sensor in real time, and the comparison and judgment module can accurately compare the real-time fluctuation data with the preset safety threshold. Once an over-threshold signal is detected, the control terminal will immediately cut off the marking command and trigger an alarm, which greatly reduces the risk of equipment misoperation.

[0021] 7. This invention utilizes symmetrically arranged industrial cameras to simultaneously capture dynamic marking images during the marking process, and packages and stores these images along with physical processing data such as the workpiece's eccentricity and sway in the control terminal. This method of deeply integrating the tamper-proof "physical manufacturing fingerprint" with the "visual code" endows the traceability mark with extremely high anti-counterfeiting attributes and has extremely high industrial added value. Attached Figure Description

[0022] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a perspective view of the overall structure of the present invention; Figure 2 This is a schematic diagram of the automatic marking mechanism in this invention; Figure 3 This is a schematic diagram of the adjusting slider in this invention; Figure 4 This is a schematic diagram of the chuck drive mechanism in this invention; Figure 5 This is a schematic diagram of the structure of the disk end panel in this invention; Figure 6 This is a schematic diagram of the drive spindle box structure in this invention; Figure 7 This is a schematic diagram of the guiding support mechanism in this invention; Figure 8 This is a schematic diagram of the supporting roller structure in this invention; Figure 9 This is a schematic diagram of the floating support mechanism in this invention; Figure 10 This is a schematic diagram of the positioning slip ring in this invention.

[0023] In the diagram: 1. Processing table; 2. Control terminal; 3. Automatic marking mechanism; 301. Vertical column; 302. Marking component; 303. Laser head; 304. Adjusting slider; 305. Lifting screw; 306. Drive motor; 4. Chuck drive mechanism; 401. Drive base; 402. Drive spindle box; 403. Chuck end panel; 404. Guide spindle; 405. Radial locking block; 406. Air pump assembly; 407. Exhaust pipe; 5. Guide support mechanism; 501. Support base; 502. Arc-shaped guide platform; 503. Mounting slot; 504. Support roller; 505. Industrial camera; 6. Floating support mechanism; 601. Roller bracket; 602. Bearing seat; 603. Guide column; 604. Elastic reset element; 605. Displacement sensor; 606. Positioning slip ring; 607. Axial groove. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0025] Example 1 In existing technologies, laser marking on wheel hub flanges typically relies on manual pushing of the flange into the chuck. Due to the lack of high-precision guidance and positioning, the flange is prone to radial eccentricity or gravity-induced sagging. Direct marking can lead to uneven marking depth, and even misalignment or scrapping. To address this technical deficiency in existing technologies, such as... Figure 1 as well as Figures 7-10 As shown, this embodiment proposes a wheel hub flange marking device for traceability identification, which can realize physical gravity self-centering guidance of the flange and detect its eccentricity and deflection status in real time before marking, thereby ensuring marking accuracy. The marking device includes a processing table 1 and a control terminal 2 set on the processing table 1. An automatic marking mechanism 3 for laser marking on the circumferential side of the flange is movably installed on the processing table 1. Below the automatic marking mechanism 3, there is a chuck drive mechanism 4 for coaxially clamping the flange and driving it to rotate in a vertical plane. On one side of the chuck drive mechanism 4, there is a guide support mechanism 5 for gravity self-centering guidance of the flange. The guide support mechanism 5 is equipped with a floating support mechanism 6 for providing support to the flange and detecting the deflection status in real time.

[0026] Specifically, the guide support mechanism 5 includes a support base 501 and an arc-shaped guide platform 502 disposed on the support base 501. The support base 501 has an installation slot 503 for accommodating the support roller 504 and the roller bracket 601. The concave arc radius of the arc-shaped guide platform 502 is adapted to the standard outer circle radius of the flange to be processed.

[0027] Specifically, the floating support mechanism 6 includes a roller bracket 601, a bearing seat 602 slidably mounted on the roller bracket 601, a support roller 504 rotatably mounted on the bearing seat 602 for rolling contact with the outer circumferential surface of the flange, an elastic reset element 604 for providing an upward reset force to the bearing seat 602 is provided between the roller bracket 601 and the bearing seat 602, and a displacement sensor 605 for detecting the vertical displacement of the support roller 504 is fixedly mounted on the upper end of the bearing seat 602. The control terminal 2 is electrically connected to the automatic marking mechanism 3, the chuck drive mechanism 4 and the displacement sensor 605 respectively.

[0028] As can be seen from the above, during marking, the operator places the flange on the arc-shaped guide table 502 and pushes it horizontally to the right. Since the radius of the concave arc surface of the arc-shaped guide table 502 is matched with the outer diameter of the flange, the flange will always slide in contact with the concave arc surface under the action of gravity. As the push proceeds, the arc surface will force the center of the flange to always coincide with the center line of the main shaft of the chuck drive mechanism 4, realizing physical self-centering guidance without manual intervention.

[0029] Next, the flange continues to move horizontally along the support base 501 until its center hole fits into the guide spindle 404. Then, the operator will trigger the chuck drive mechanism 4, and the radial locking block 405 will coaxially lock the flange.

[0030] After the flange is locked, the control terminal 2 does not start marking. Instead, it controls the chuck drive mechanism 4 to drive the flange to rotate at low speed. At this time, if there is radial eccentricity at the center of the flange, the outer circle of the flange will exhibit periodic up and down jumping during the rotation due to the effects of gravity and centrifugal force.

[0031] This jumping will compress the support roller 504, which will cause the bearing seat 602 to float up and down on the guide post 603 against the elastic force of the compression spring. At this time, the displacement sensor 605 will capture the vertical displacement of the bearing seat 602 in real time and send the continuous fluctuation signal to the control terminal 2.

[0032] Subsequently, the control terminal 2 will perform range analysis on the received fluctuation signal. If the fluctuation amplitude exceeds the preset eccentricity threshold, the control terminal 2 will determine that the clamping is unqualified, directly alarm and prohibit marking; if the fluctuation amplitude is within the threshold, it will determine that the clamping is concentric, and the control terminal 2 will then unlock the automatic marking mechanism 3, control the lifting screw 305 to adjust the height, and start the laser head 303 to mark the circumferential side of the flange.

[0033] During the marking process, due to the constant preload of the compression spring, the support roller 504 will always be in close contact with the outer circle of the flange, ensuring the overall stability of the equipment during the marking process.

[0034] Example 2 To address the issue of axial end-face misalignment of flanges during actual production, which causes the laser head 303 to fail to focus and hinders visual traceability, based on Example 1, as follows... Figures 7-10 As shown, this embodiment includes a positioning slip ring 606 and a deflection sensor assembly for detecting axial runout.

[0035] Specifically, an axial groove 607 for limiting the stroke is provided on the outer side wall of the support roller 504. A positioning slip ring 606 for abutting against the end face of the flange is movably sleeved on the outside of the support roller 504. The inner side wall of the positioning slip ring 606 is slidably engaged in the axial groove 607. A return spring and a deflection sensor are provided in the axial groove 607. The deflection sensor is used to detect the axial displacement of the positioning slip ring 606 in the axial groove 607. The control terminal 2 is electrically connected to the deflection sensor.

[0036] In addition, industrial cameras 505 are symmetrically mounted on the support base 501 for real-time acquisition of the marking images of the flange. The control terminal 2 is electrically connected to the industrial camera 505 to receive and store the marking images for traceability identification.

[0037] As can be seen from the above, during the clamping and idling stage, the positioning slip ring 606 will always maintain its end face in contact with the side of the flange under the thrust of the return spring in the axial groove 607. If axial wobble occurs during the rotation of the flange, that is, if the end face of the flange exhibits a "seesaw"-like periodic oscillation, the positioning slip ring 606 will be pushed back and forth by the end face of the flange, resulting in periodic axial sliding in the axial groove 607.

[0038] The deflection sensor will detect the axial displacement of the positioning slip ring 606 in real time and transmit the axial fluctuation signal to the control terminal 2. If the axial fluctuation exceeds the set threshold, the control terminal 2 will determine that the flange end face is not calibrated and prohibit marking; if it is within the threshold, marking is allowed.

[0039] During the marking process, the industrial camera 505 is in standby mode. After the laser head 303 completes the marking action, the control terminal 2 sends a synchronous trigger signal to the symmetrically arranged industrial cameras 505. Since the flange continues to rotate under the drive of the chuck drive mechanism 4, the industrial cameras 505 on both sides will alternately capture local images of the circumferential side of the flange, forming a continuous image sequence.

[0040] At the same time, the control terminal 2 will stitch and recognize these images, extract the QR code or character information, and store it in the local database, thus completing the seamless connection between physical marking and data traceability of the workpiece.

[0041] Example 3 To further improve the clamping rigidity and clamping efficiency of the flange, and to achieve high-precision position adjustment of the laser head 303, based on the above embodiments, such as Figures 1-6 As shown, this embodiment is equipped with a high-rigidity pneumatic chuck drive mechanism 4 and a precision automatic marking mechanism 3.

[0042] Specifically, the chuck drive mechanism 4 includes a drive base 401 fixedly mounted on the machining table 1. A drive spindle box 402 is drivenly connected to the drive base 401. A chuck end panel 403 for carrying the flange is coaxially fixedly mounted on the drive spindle box 402. A guide spindle 404 for inserting into the center hole of the flange for initial positioning is fixedly mounted at the center of the chuck end panel 403. Multiple radial locking blocks 405 for clamping the flange are slidably mounted on the outer side of the guide spindle 404. An air pump assembly 406 is integrated inside the drive spindle box 402. The air pump assembly 406 is connected to an exhaust pipe 407 for inflating the guide spindle 404. The air pump assembly 406 is electrically connected to the control terminal 2.

[0043] Specifically, the automatic marking mechanism 3 includes a vertical column 301 fixedly installed on the processing table 1. A lifting screw 305 is rotatably connected inside the vertical column 301. An adjusting slider 304 is threadedly connected to the outside of the lifting screw 305. A marking component 302 is slidably installed on the outside of the vertical column 301 through the adjusting slider 304. A drive motor 306 for driving the lifting screw 305 to rotate along its own axis is fixedly installed on the top of the vertical column 301. The drive motor 306 is electrically connected to the control terminal 2. A laser head 303 for emitting a laser beam is installed at the bottom of the marking assembly 302. A fine-tuning mechanism for adjusting the horizontal position of the laser head 303 is provided between the laser head 303 and the marking assembly 302. The fine-tuning mechanism includes a fine-tuning screw and a sliding seat. The sliding seat is slidably disposed at the bottom of the marking assembly 302. The fine-tuning screw is threadedly connected to the sliding seat and is used to drive the sliding seat to move in the horizontal direction, so that the laser head 303 can move along the thickness direction of the flange. Through the micro-distance conversion of the mechanical thread, the laser focus is precisely aligned at the micrometer level in the thickness direction of the flange, preventing laser defocusing caused by flange thickness tolerance.

[0044] As can be seen from the above, during the automatic feeding and strong locking stage, when the flange is pushed into place along the guide table and the center hole is fitted into the guide spindle 404, the control terminal 2 activates the air pump assembly 406 in the drive spindle box 402.

[0045] Next, the air pump assembly 406 generates high-pressure gas, which is then delivered to the sealed cavity inside the guide spindle 404 through the exhaust pipe 407. Subsequently, the pneumatic pressure pushes the radial locking block 405 to slide outward radially in sync, so that its outer surface is tightly attached to the inner wall of the flange center hole.

[0046] This pneumatic expansion locking mechanism, which extends from the inside out, forms a double rigid constraint with the axial support of the chuck end panel 403, completely eliminating the risk of slippage or displacement of the flange when it is subjected to radial force during subsequent marking.

[0047] During the marking execution phase, the control terminal 2 first controls the drive motor 306 to rotate, which drives the lifting screw 305 to rotate. Then, through the threaded transmission, the adjusting slider 304 slides on the vertical column 301, thereby moving the marking assembly 302 to a predetermined height. Next, according to the thickness specification of the flange, the control terminal 2 controls the fine-tuning screw to rotate, driving the sliding seat to move horizontally at the bottom of the marking assembly 302. This drives the laser head 303 to perform micron-level precise alignment along the thickness direction of the flange, ensuring that the laser focus falls precisely on the circumferential side of the flange, thereby preventing laser defocusing due to flange thickness tolerance.

[0048] Example 4 To combine physical inspection of mechanical structures with intelligent automatic control and achieve a true "error prevention-marking-traceability" closed loop, based on the above embodiments, such as Figure 1 As shown, this embodiment includes an intelligent error prevention and traceability control module.

[0049] Specifically, the control terminal 2 includes a signal receiving module, a comparison and judgment module, and an execution control module. The signal receiving module is electrically connected to the displacement sensor 605 and the deflection sensor, respectively, and is used to receive vertical displacement signals and axial displacement signals. The comparison and judgment module is used to compare the received displacement signals with preset thresholds. The execution control module is electrically connected to the automatic marking mechanism 3 and the industrial camera 505, respectively. When the displacement signal exceeds the preset threshold, it controls the automatic marking mechanism 3 to stop marking and output an alarm signal. When the displacement signal does not exceed the preset threshold, it controls the laser head 303 to start marking and simultaneously controls the industrial camera 505 to acquire the marked image for traceability verification.

[0050] As can be seen from the above, the entire automated execution process of the equipment is uniformly scheduled through control terminal 2, and specifically includes three stages: Phase 1 (Error Prevention Self-Check): After the flange is clamped, the chuck drive mechanism 4 performs low-speed idling. At this time, the signal receiving module will continuously receive the radial displacement signal from the displacement sensor 605 and the axial displacement signal from the deflection sensor. At the same time, the comparison and judgment module will dynamically compare the maximum value, minimum value and fluctuation amplitude of these two signals in a unit cycle with the preset process safety threshold.

[0051] Phase Two (Execution and Alarm): If the signal fluctuation amplitude is greater than the preset threshold, the comparison and judgment module will determine that the workpiece is eccentric or has a clamping error. It will send a power cut-off interlock signal to the automatic marking mechanism 3 through the execution control module and trigger an audible and visual alarm to prompt manual intervention. If the signal fluctuation amplitude is less than or equal to the preset threshold, the comparison and judgment module will determine that the workpiece is qualified. It will send a start signal allowing marking to the drive motor 306 and the laser head 303 through the execution control module and automatically fine-tune the marking pressure and power according to the signal magnitude to complete the etching.

[0052] Phase 3 (Traceability and Archiving): At the same moment that the laser head 303 performs the marking action, the execution control module sends synchronous acquisition pulse signals to the industrial cameras 505 on both sides, so that they continuously capture images within the time it takes for the flange to rotate one revolution. The captured marking images are transmitted back to the storage unit of the control terminal 2 in real time. Then, the system packages and stores the "radial eccentricity data and axial runout data of the current workpiece" and the "corresponding traceability QR code image" into an independent data package. After the product leaves the factory, the physical state data of the workpiece at the time of marking can be accurately retrieved by scanning the code, realizing in-depth quality traceability.

[0053] The control method of this invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Furthermore, since this invention is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail here.

[0054] It should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0055] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wheel hub axle flange marking device for traceability identification, comprising a processing table (1) and a control terminal (2) disposed on the processing table (1), characterized in that: An automatic marking mechanism (3) for laser marking the circumferential side of the flange is movably installed on the processing table (1). Below the automatic marking mechanism (3) is a chuck drive mechanism (4) for coaxially clamping the flange and driving it to rotate in the vertical plane. On one side of the chuck drive mechanism (4) is a guide support mechanism (5) for gravity self-centering guidance of the flange. On the guide support mechanism (5) is a floating support mechanism (6) for providing support to the flange and detecting the deflection state in real time. The guide support mechanism (5) includes a support base (501) and an arc-shaped guide platform (502) disposed on the support base (501); The floating support mechanism (6) includes a roller bracket (601), a bearing seat (602) is slidably mounted on the roller bracket (601), a support roller (504) for rolling contact with the outer circumferential surface of the flange is rotatably mounted on the bearing seat (602), an elastic reset element (604) for providing an upward reset force to the bearing seat (602) is provided between the roller bracket (601) and the bearing seat (602), and a displacement sensor (605) for detecting the vertical displacement of the support roller (504) is fixedly mounted on the upper end of the bearing seat (602). The control terminal (2) is electrically connected to the automatic marking mechanism (3), the chuck drive mechanism (4) and the displacement sensor (605).

2. The wheel hub axle flange marking device for traceability identification according to claim 1, characterized in that: An industrial camera (505) for real-time acquisition of the marking image of the flange is symmetrically installed on the support base (501).

3. The wheel hub axle flange marking device for traceability identification according to claim 1, characterized in that: An axial groove (607) for limiting the stroke is provided on the outer side wall of the support roller (504). A positioning slip ring (606) for abutting against the end face of the flange is movably sleeved on the outside of the support roller (504). The inner side wall of the positioning slip ring (606) is slidably engaged in the axial groove (607). A reset spring and a deflection sensor are provided in the axial groove (607).

4. The wheel hub axle flange marking device for traceability identification according to claim 1, characterized in that: The chuck drive mechanism (4) includes a drive base (401) fixedly installed on the processing table (1), a drive spindle box (402) is connected to the drive base (401), a chuck end panel (403) for carrying the flange is fixedly installed on the drive spindle box (402) coaxially, a guide spindle (404) for inserting into the center hole of the flange to achieve preliminary positioning is fixedly installed at the center of the chuck end panel (403), and a plurality of radial locking blocks (405) for clamping the flange are slidably installed on the outer side of the guide spindle (404) along the radial direction.

5. A wheel hub axle flange marking device for traceability identification according to claim 4, characterized in that: The drive spindle housing (402) integrates an air pump assembly (406), which is connected to an exhaust pipe (407) for filling the guide spindle (404) with air. The air pump assembly (406) is electrically connected to the control terminal (2).

6. A wheel hub axle flange marking device for traceability identification according to claim 1, characterized in that: The automatic marking mechanism (3) includes a vertical column (301) fixedly installed on the processing table (1). A lifting screw (305) is rotatably connected inside the vertical column (301). An adjusting slider (304) is threadedly connected to the outside of the lifting screw (305). A marking component (302) is slidably installed on the outside of the vertical column (301) through the adjusting slider (304). A drive motor (306) for driving the lifting screw (305) to rotate along its own axis is fixedly installed on the top of the vertical column (301).

7. A wheel hub axle flange marking device for traceability identification according to claim 6, characterized in that: The bottom of the marking assembly (302) is equipped with a laser head (303) for emitting a laser beam. A fine-tuning mechanism for adjusting the horizontal position of the laser head (303) is provided between the laser head (303) and the marking assembly (302). The fine-tuning mechanism includes a fine-tuning screw and a sliding seat. The sliding seat is slidably disposed at the bottom of the marking assembly (302), and the fine-tuning screw is threadedly connected to the sliding seat.

8. A wheel hub axle flange marking device for traceability identification according to claim 3, characterized in that: The support base (501) has an installation slot (503) for accommodating the support roller (504) and the roller bracket (601), and the concave arc radius of the arc guide platform (502) is adapted to the standard outer circle radius of the flange to be processed.

9. A wheel hub axle flange marking device for traceability identification according to claim 8, characterized in that: A guide post (603) is vertically fixed on the roller bracket (601). The bearing seat (602) is slidably sleeved on the outside of the guide post (603). The elastic reset element (604) is a compression spring. The compression spring is sleeved on the outside of the guide post (603). The bottom end of the compression spring abuts against the bottom surface of the roller bracket (601), and the top end of the compression spring abuts against the bottom surface of the bearing seat (602).

10. A wheel hub axle flange marking device for traceability identification according to claim 1, characterized in that: The control terminal (2) includes a signal receiving module, a comparison and judgment module and an execution control module. The signal receiving module is electrically connected to the displacement sensor (605) and the deflection sensor respectively, and is used to receive vertical displacement signals and axial displacement signals. The comparison and judgment module is used to compare the received displacement signals with a preset threshold. The execution control module is electrically connected to the automatic marking mechanism (3) and the industrial camera (505) respectively.

Images