Online laser monitoring and positioning device and method for abrasion of grinding wheel

Abstract

The invention discloses an online laser monitoring and positioning device and method for abrasion of a grinding wheel, and relates to the technical field of abrasion detection of the grinding wheel. The device comprises a mounting base, a multi-station grinding wheel polishing assembly, a main laser detection assembly, an auxiliary laser detection assembly and a cleaning assembly. The device can monitor the abrasion state of a grinding wheel in real time in the grinding process of the grinding wheel. The cooling structure is arranged to dissipate heat of the detection assembly, the cleaning assembly is arranged to clean the detection surface, and the calibration structure is used to realize laser beam focusing calibration, so that the influence of environmental interference on the detection precision is reduced, the detection stability and continuity are improved, and the detection precision is improved. And moreover, integrated cooperative work of grinding, detection, cleaning and calibration can be conveniently achieved, the reliability and practicability of online monitoring of abrasion of the grinding wheel can be improved, and the problems that in the prior art, abrasion detection of the grinding wheel is prone to dust pollution, heat is accumulated, and calibration is difficult are solved.

Description

Technical Field

[0001] This invention relates to the technical field of grinding wheel wear monitoring, and in particular to an online laser monitoring and positioning device and method for grinding wheel wear. Background Technology

[0002] Grinding wheels play an important role in the removal and shaping of workpieces during the grinding process. Their wear condition directly affects the workpiece's machining accuracy, surface quality, and machining efficiency.

[0003] For example, Chinese patent CN120593617A discloses a test platform and test method for real-time monitoring of cutter wear in tunnel boring machines, including an electric blade rotary machine, a grinding wheel, a grinding wheel motor, a grinding wheel lifting motor, a laser rangefinder, a magnetic sensor, and a host computer; the laser rangefinder and the magnetic sensor are set around the cutter; the magnetic sensor collects the magnetic field change signal during the cutter wear process; the laser rangefinder collects three-dimensional point cloud data during the cutter wear process; and based on the magnetic field change signal and the three-dimensional point cloud data, the cutter wear result is obtained through various recognition models.

[0004] However, the aforementioned wear monitoring devices or platforms still have many shortcomings in practical applications: 1. In traditional machining methods, grinding wheel wear is usually checked manually by stopping the machine or by intermittent offline inspection. These methods have obvious shortcomings: on the one hand, manual inspection is difficult to reflect the actual wear changes of the grinding wheel in real time, which can easily lead to the grinding wheel continuing to work after excessive wear, thus affecting the quality of the workpiece; on the other hand, stopping the machine for inspection will interrupt the machining cycle and reduce the overall production efficiency, especially in continuous machining situations where it is even more difficult to meet the needs of online monitoring.

[0005] 2. With the development of laser measurement technology, online scanning of grinding wheel wear profiles using laser detection components has become a relatively advanced detection method. Laser detection has advantages such as non-contact operation, fast response, and high accuracy. However, in practical applications, laser detection components often face various environmental influences. For example, dust, debris, and coolant splashes generated during grinding can easily adhere to the surface of the laser detection component, causing obstruction of laser beam propagation, attenuation of the detection signal, or a decrease in measurement accuracy, thereby affecting the stability of distance measurement.

[0006] In summary, there is still room for optimization and improvement in existing online laser wear monitoring and positioning devices. Summary of the Invention

[0007] To address the aforementioned problems, this invention provides an online laser monitoring and positioning device and method for grinding wheel wear, employing the following technical solution: In a first aspect, this application provides an online laser monitoring and positioning device for grinding wheel wear, including a chassis, a mounting base, a multi-station grinding wheel assembly, a main laser detection assembly, and a secondary laser detection assembly disposed within the chassis; The multi-station grinding wheel assembly includes a driver mounted on a chassis. The output end of the driver faces downward and is connected to a support frame. The support frame is equipped with a grinding wheel for grinding workpieces placed on a mounting base. The driver controls the lifting and lowering of the grinding wheel so that the grinding wheel can grind different positions on the surface of the workpiece. The main laser detection component and the auxiliary laser detection component are symmetrically mounted on the control turntable, which is symmetrically located on the inner wall of the chassis. The main laser detection component and the auxiliary laser detection component work alternately. A cleaning component is also provided between the main laser detection component and the secondary laser detection component.

[0008] Preferably, a cooling box is also provided on the back side of the control turntable, and the flowing coolant dissipates heat from the main laser detection component and the auxiliary laser detection component after flowing through the cooling box; The cooling box is also equipped with symmetrical cooling pipes, with the end of the cooling pipes away from the cooling box extending outwards.

[0009] Preferably, the cleaning component includes an inverted bracket mounted on a control turntable, a cleaning scraper rotatably mounted on the inner center of the inverted bracket, and a cleaning groove for cleaning stains and a collection groove for collecting the cleaned stains at the bottom of the cleaning scraper. Cleaning brushes are installed in the cleaning tank along the height direction, and air nozzles are installed in the collection tank along the height direction.

[0010] Preferably, a partition is integrally provided in the middle of the cleaning tank, and a limiting post that slides through the partition is installed on the top of the cleaning brush. A limiting spring is provided between the limiting post and the partition, so that the cleaning brush has elastic floating ability when it contacts the detection surface.

[0011] Preferably, a servo motor is installed on the support frame, and the output end of the servo motor is connected to the cleaning brush, which drives the cleaning brush to rotate to achieve cleaning of the surfaces of the main laser detection component and the auxiliary laser detection component.

[0012] Preferably, the collection groove of the cleaning scraper is also equipped with a calibration block for focusing and calibrating the laser beams of the main laser detection component and the auxiliary laser detection component.

[0013] Preferably, the chassis is also equipped with a cooling system for spraying coolant onto the surface of the workpiece.

[0014] Secondly, this application also provides an online laser monitoring and positioning method for grinding wheel wear, comprising the following steps: S1. Workpiece placement and grinding wheel: Place the workpiece to be processed on the mounting base and fix it. Start the multi-station grinding wheel assembly to grind the workpiece. S2. Main laser switching and detection: During the grinding process, the main laser detection component is activated to perform online laser scanning detection on the wear profile of the grinding wheel to obtain wear information on the workpiece surface; S3. Secondary laser switching and inspection: After the main laser inspection component is working, the secondary laser inspection component is activated to perform auxiliary inspection or verification inspection on the workpiece surface; S4. Main and Sub-laser Detection and Switching: The main laser detection component and the sub-laser detection component operate alternately when inspecting the workpiece. During the alternating operation, there will be a period of overlapping working time when both components are in working condition. During this overlapping working time, the main laser detection component and the sub-laser detection component are compared and inspected to determine their working conditions. S5. Cleaning component cleaning: When stains adhere to the surface of the main laser detection component or the auxiliary laser detection component, the cleaning component is activated and brushes and cleans the surface of the main laser detection component and the auxiliary laser detection component. The stains after cleaning are collected in a unified manner. S6. Air jet cleaning: After the cleaning components have been brushed, directional air jets are sprayed onto the surface of the main laser detection component or the auxiliary laser detection component to further remove residual stains. S7. Laser head calibration: After the workpiece is polished, the laser beams of the main laser detection component and the auxiliary laser detection component are actively focused and calibrated to facilitate the device to re-enter the next round of polishing and inspection cycle.

[0015] In summary, this application includes at least one of the following beneficial technical effects: I. This invention integrates the mounting base, multi-station grinding wheel assembly, main laser detection assembly, auxiliary laser detection assembly, and control turntable into a single unit, improving the continuity and automation level of the process flow and meeting the application scenarios of long-term continuous processing and online monitoring.

[0016] Second, the main laser detection component and the auxiliary laser detection component of this invention can flexibly switch between different working modes, such as alternating monitoring, synchronous monitoring, and individual monitoring. This allows the device to meet the stable detection requirements when working independently, and to allow the other detection component to take over in time when one detection component is contaminated, deviated, or abnormal. This enhances the fault tolerance and continuous monitoring capability of the system and avoids the entire machine from stopping due to a single point of failure.

[0017] Third, the cleaning component set between the main laser detection component and the auxiliary laser detection component of this invention enables the device to automatically clean itself, avoiding the inconvenience of manual operation; it ensures that the laser detection surface always maintains a high degree of cleanliness, reducing the obstruction or interference of dirt on the laser propagation path and echo signal. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the structure of the online laser monitoring and positioning device for grinding wheel wear of the present invention.

[0020] Figure 2 This is a schematic diagram of the structure between the multi-station grinding wheel assembly, the main laser detection assembly, and the auxiliary laser detection assembly of the present invention.

[0021] Figure 3 This is a schematic diagram of the structure between the mounting base, clamping block, adjusting clamping cylinder and fixing block of the present invention.

[0022] Figure 4 This is a first-view structural diagram of the main laser detection component, the secondary laser detection component, and the cleaning component of the present invention.

[0023] Figure 5 This is a second-view structural diagram of the main laser detection component, the secondary laser detection component, and the cleaning component of the present invention.

[0024] Figure 6 This is a first-view structural schematic diagram of the cleaning component of the present invention.

[0025] Figure 7 This is a second-view structural schematic diagram of the cleaning component of the present invention.

[0026] Figure 8 Between the present inventions Figure 6 Enlarged view of the local structure at point A in the image.

[0027] Figure 9 This is a third-view structural diagram of the cleaning component of the present invention.

[0028] Figure 10 This is a plan view of the cleaning component of the present invention.

[0029] Figure 11 This is a flowchart illustrating the usage method of the online laser monitoring and positioning device for grinding wheel wear according to the present invention.

[0030] Explanation of reference numerals in the attached figures: 1. Chassis; 11. Mounting base; 2. Multi-station grinding wheel assembly; 3. Main laser detection assembly; 4. Secondary laser detection assembly; 20. Support frame; 21. Grinding wheel machine; 22. Driver; 5. Control turntable; 6. Cooling box; 7. Cleaning assembly; 70. C-shaped bracket; 71. Cleaning scraper; 72. Collection tank; 73. Cleaning tank; 74. Cleaning brush; 75. Air nozzle; 730. Partition plate; 731. Limiting post; 732. Limiting spring; 76. Servo motor; 78. Calibration block; 110. Clamping block; 111. Adjusting clamping cylinder; 112. Fixing block. Detailed Implementation

[0031] The following combination Figures 1-11 This application will be described in further detail.

[0032] This application proposes an online laser monitoring and positioning device and method for grinding wheel wear. The purpose is to acquire wear information in real time during the grinding wheel processing, and to automatically clean and calibrate the detection component when it is contaminated or misaligned, thereby ensuring detection accuracy. At the same time, the laser detection component is cooled by a cooling box 6 and a cooling pipe to avoid unstable output of the laser due to excessive temperature rise.

[0033] Example 1:

[0034] Reference Figure 1 and Figure 2 As shown, an online laser monitoring and positioning device for grinding wheel wear includes a housing 1, a mounting base 11, a multi-station grinding wheel assembly 2, a main laser detection assembly 3, and a secondary laser detection assembly 4, all housed within the housing 1.

[0035] The mounting base 11 should have sufficient rigidity and stability to reduce vibration transmission during equipment operation and ensure grinding and testing accuracy.

[0036] Mounting base 11 serves as the overall load-bearing foundation, providing stable and reliable mounting support for the entire workpiece. This ensures that the workpiece remains stable and undisplaced during grinding and laser inspection, thereby guaranteeing processing and inspection accuracy from a fundamental perspective.

[0037] Reference Figure 3 As shown, the mounting base 11 is provided with a clamping block 110 and an adjustable clamping cylinder 111. The clamping block 110 is used to position the workpiece. The output end of the adjustable clamping cylinder 111 is connected to the clamping block 110. The mounting base 11 is also provided with a fixing block 112 corresponding to the clamping block. When the workpiece is placed near the fixing block 112, the clamping block 110 is driven by the adjustable clamping cylinder 111 to press against the workpiece, so that the workpiece is located between the fixing block 112 and the clamping block 110, realizing the quick fixing and disassembly of the workpiece. The surface of the clamping block 110 is provided with an anti-slip buffer pad to avoid damaging the surface of the workpiece.

[0038] Looking back Figure 2 As shown, a multi-station grinding wheel assembly 2 is provided on the mounting base 11. The multi-station grinding wheel assembly 2 includes a driver 22 mounted on the chassis 1. The output end of the driver 22 faces downward and is connected to a support frame 20. The support frame 20 is equipped with a grinding wheel machine 21 for grinding the workpiece placed on the mounting base 11. The driver 22 controls the grinding wheel machine 21 to rise and fall, so that the grinding wheel machine 21 grinds different positions on the surface of the workpiece.

[0039] It should be noted that the driver 22 is an electrically controlled telescopic rod that can control the grinding wheel 21 to move up and down along the housing 1, so that the grinding wheel 21 can move closer to or away from the workpiece.

[0040] The grinding wheel machine 21 is a known existing structure, equipped with a motor to control its high-speed rotation.

[0041] In actual operation, the height of the grinding wheel machine 21 can be adjusted according to processing needs to make appropriate contact between the grinding wheel and the workpiece surface to achieve the purpose of material removal. Since grinding wheel is a continuous mechanical processing process, it is easy to generate a lot of dust and debris. Therefore, a reasonable space is required between the processing area and the inspection area, and an additional existing known cooling system is also required to suppress dust.

[0042] The chassis 1 is also equipped with a cooling system that sprays coolant onto the surface of the workpiece to suppress dust and cool the contact surface between the workpiece and the grinding wheel during high-speed friction.

[0043] Let's look again. Figure 1 and Figure 2 As shown, the main laser detection component 3 and the auxiliary laser detection component 4 are respectively installed inside the chassis 1. They are the core execution units for online monitoring of grinding wheel wear. They adopt the principle of laser non-contact detection to achieve accurate scanning and positioning of wear contours.

[0044] The main laser detection component 3 and the auxiliary laser detection component 4 are installed symmetrically. Both are fixedly mounted on the control turntable 5. The installation position is based on the central axis of the control turntable 5 as a symmetrical reference to ensure the stability and positioning accuracy of the main laser detection component 3 and the auxiliary laser detection component 4 after subsequent laser emission.

[0045] Reference Figure 4 and Figure 5As shown, a cooling box 6 is provided on the back side of the control turntable 5. The cooling box 6 is used to contain flowing coolant. After passing through the cooling box 6, the coolant dissipates heat from the main laser detection component 3 and the auxiliary laser detection component 4. The cooling box 6 is provided with two sets of symmetrical cooling pipes. The end of the cooling pipe away from the cooling box 6 extends into and connects to the cooling system. Since the main laser detection component 3 and the auxiliary laser detection component 4 will continuously generate heat during operation, and excessive heat will affect the laser emission power, receiving sensitivity and the lifespan of internal electronic components, it is necessary to provide stable heat dissipation.

[0046] In addition, the coolant required for heat dissipation is the same liquid used in the cooling system of the multi-station grinding wheel assembly 2. Both share the same liquid, which ensures that the liquid is used for multiple purposes and reduces energy consumption. Furthermore, this application achieves heat dissipation through coolant circulation, which has advantages such as high heat dissipation efficiency and stable temperature control compared to a single air cooling method. The cooling box 6 is located on the back side of the control turntable 5, which can minimize the cooling system's occupation of the front detection space and reduce the adverse effects of external dust on the cooling structure.

[0047] To further ensure the accuracy of laser detection, this application also proposes a cleaning component 7. A dedicated cleaning component 7 is set in the area between the main laser detection component 3 and the auxiliary laser detection component 4. The cleaning component 7 is a surface cleaning and protection unit for the laser detection component. It can automatically complete the removal, collection and blowing of dirt on the laser detection surface without manual operation, effectively ensuring the smooth flow of the laser light path and improving the stability and continuity of the detection signal.

[0048] Reference Figure 5 , Figure 6 and Figure 7 As shown, the cleaning component 7 includes an inverted bracket 70 mounted on the control turntable 5. A cleaning scraper 71 is rotatably mounted on the inner center of the inverted bracket 70 via a bearing. The cleaning scraper 71 has a cleaning groove 73 and a collection groove 72 on the side near the main laser detection component 3 and the auxiliary laser detection component 4, respectively. The cleaning groove 73 is used to perform preliminary cleaning of stains attached to the detection surface, and the collection groove 72 is used to collect and aggregate the cleaned stains. Through the partitioned design of the cleaning groove 73 and the collection groove 72, the stains can be removed along a designated path during the cleaning process without spreading around the detection components.

[0049] Reference Figure 7 , Figure 7 and Figure 9As shown, a cleaning brush 74 is slidably disposed within the cleaning groove 73 along the height direction. The cleaning brush 74 rotates or brushes under the drive of the servo motor 76. After contacting the surface to be cleaned, it loosens and sweeps away the attached dirt. In order to make the cleaning brush 74 have better fit and adaptability during the cleaning process, a partition 730 is integrally provided in the middle of the cleaning groove 73. A limiting post 731 that slides through the partition 730 is installed on the top of the cleaning brush 74. A limiting spring 732 is provided between the limiting post 731 and the partition 730 and sleeved on the limiting post 731. The function of the limiting spring 732 is to provide elastic support for the cleaning brush 74. When the cleaning brush 74 contacts different surface conditions, it can generate appropriate displacement under the action of the limiting spring 732, thereby maintaining a moderate brushing pressure, avoiding damage to the surface of the detection component due to excessive pressure, and also avoiding incomplete cleaning due to insufficient pressure.

[0050] During operation, if stains are found on the surface of the main laser detection component 3 and the auxiliary laser detection component 4, the servo motor 76 drives the cleaning brush 74 to rotate through the cleaning scraper 71. Under the elastic action of the limiting spring 732, the cleaning brush 74 brushes and cleans the detection surface. After the stains are brushed off, they enter the cleaning tank 73 and are further collected in the collection tank 72. After brushing is completed, the air nozzle 75 in the collection tank 72 is turned on to spray air in a directional manner on the detection surface and the inside of the collection tank 72 to blow away the residual stains and collect them to prevent secondary pollution.

[0051] Let's look again. Figure 9 and Figure 10 As shown, an air nozzle 75 is provided along the height direction inside the collection tank 72. The air nozzle 75 is used to blow away residual stains after brushing, so that the detached dust and impurities can further enter the collection tank 72 for centralized treatment. The air nozzle 75 is set up in conjunction with the collection tank 72 to further remove the cleaned residue from the detection area, avoiding the residue from staying near the laser detection channel and affecting subsequent measurements. The combination of mechanical brushing and airflow blowing makes the cleaning effect more thorough.

[0052] To ensure the smooth operation of the cleaning scraper, a servo motor 76 is installed on the support frame 20. The output end of the servo motor 76 is connected to the cleaning brush 74, driving the cleaning brush 74 to rotate and clean the surfaces of the main laser detection component 3 and the auxiliary laser detection component 4. The servo motor 76 has advantages such as high positioning accuracy, fast response, and controllable speed, making it suitable for driving the cleaning brush 74 to complete regular cleaning actions. Through the control of the servo motor 76, the cleaning brush 74 can work according to the preset speed and direction, thereby ensuring the stability and repeatability of the cleaning process.

[0053] Let's look again. Figure 9As shown, the collection groove 72 of the cleaning scraper 71 is also equipped with a calibration block 78 for focusing and calibrating the laser beams of the main laser detection component 3 and the auxiliary laser detection component 4. The calibration block 78 is used to perform benchmark verification on the laser beam emission direction and focusing position after the laser detection components are cleaned. Since the cleaning process or the laser head replacement process may cause the laser optical path to deviate, focusing calibration is performed after cleaning to help restore the standard working state of the laser detection system. The setting position of the calibration block 78 is combined with the collection groove 72, which can directly complete the calibration action near the cleaning station without having to switch to an independent and complex station, thereby simplifying the workflow.

[0054] In actual operation, the main laser detection component 3 and the auxiliary laser detection component 4 have multiple working modes.

[0055] The first working mode: the main laser detection component 3 works first, and then the auxiliary laser detection component 4 works, forming an alternating working state.

[0056] First, the workpiece to be processed is placed on the mounting base 11, and the multi-station grinding wheel assembly 2 performs initial grinding. The support frame 20 controls the lifting and lowering of the grinding wheel machine 21, so that the grinding wheel machine 21 contacts the surface of the workpiece and completes the grinding process. After grinding, the turntable 5 is controlled to rotate, and the main laser detection assembly 3 is switched to the detection position to perform real-time online laser scanning detection of the grinding wheel wear profile of the workpiece and obtain grinding wheel wear information. When the main laser detection assembly 3 is working for a long time, the auxiliary laser detection assembly 4 can be cleaned to ensure its cleanliness. After the auxiliary laser detection assembly 4 is cleaned, the cleaning scraper 71 stays in front of it, blocking the key parts and avoiding contamination by impurities generated during grinding.

[0057] After the main laser detection component 3 has been working for a long time, the auxiliary laser detection component 4 will turn on in advance, so that there is a certain overlap time between the auxiliary laser detection component 4 and the main laser detection component 3. During this overlap time, the main laser detection component 3 and the auxiliary laser detection component 4 monitor the wear status of the same area of ​​the grinding wheel. If the monitored data is within a certain reasonable range, it means that the main laser detection component 3 and the auxiliary laser detection component 4 are both in normal condition. At this time, the main laser detection component 3 can be turned off for cleaning. After it is shut down and cooled to normal temperature, it can be turned on again, so that the main laser detection component 3 and the auxiliary laser detection component 4 form an alternating working state. In addition, it can also perform self-checks during the alternation process to ensure the normal operation of the equipment.

[0058] If there is a certain overlap between the auxiliary laser detection component 4 and the main laser detection component 3, during this overlap period, the main laser detection component 3 and the auxiliary laser detection component 4 monitor the wear status of the same area of ​​the grinding wheel. If the monitored data are inconsistent, it indicates that there is a problem with the equipment. At this time, the cleaning scraper 71 is activated, and the calibration block 78 on the cleaning scraper 71 actively detects the main laser detection component 3 and the auxiliary laser detection component 4 to determine which set of equipment is damaged. The damaged equipment can be replaced, and the machine can be operated without stopping during the replacement process, ensuring the continuity of grinding and the stability of monitoring.

[0059] It should be noted that the cleaning scraper 71 and the cleaning brush 74 not only achieve the effect of cleaning the main laser detection component 3 and the auxiliary laser detection component 4, but also have the effect of covering the main laser detection component 3 or the auxiliary laser detection component 4 to prevent dust, thus avoiding contamination of the main laser detection component 3 or the auxiliary laser detection component 4 after cleaning.

[0060] The cleaning scraper 71 and the cleaning brush 74 work together to form a protective device with a U-shaped structure. The cleaning brush 74 abuts against the main laser detection component 3 or the secondary laser detection component 4, which not only prevents the main laser detection component 3 or the secondary laser detection component 4 from being scratched, but also facilitates subsequent cleaning.

[0061] The second working mode: the main laser detection component 3 and the auxiliary laser detection component 4 work simultaneously.

[0062] First, the workpiece to be processed is placed on the mounting base 11, and initial grinding is performed on it by the multi-station grinding wheel assembly 2. The support frame 20 controls the lifting and lowering of the grinding wheel machine 21 so that the grinding wheel machine 21 contacts the surface of the workpiece and completes the grinding process. After the grinding is completed, the main laser detection assembly 3 and the auxiliary laser detection assembly 4 on the control turntable 5 are started simultaneously, and the grinding wheel wear profile of the workpiece is scanned and detected in real time by laser to obtain the grinding wheel wear information.

[0063] During the detection process, if the monitoring data of the main laser detection component 3 and the auxiliary laser detection component 4 fluctuate, the laser emission areas of the main laser detection component 3 and the auxiliary laser detection component 4 will be severely contaminated. Therefore, the cleaning scraper 71 and the cleaning brush 74 will be activated to clean them alternately to ensure the stability of the monitoring of the main laser detection component 3 and the auxiliary laser detection component 4.

[0064] At the same time, the main laser detection component 3 and the auxiliary laser detection component 4 work simultaneously, enabling real-time comparison of the two sets of data to ensure the authenticity and validity of the data. They can also be used for grinding workpieces with high precision requirements.

[0065] Reference Figure 11 As shown, an online laser monitoring and positioning method for grinding wheel wear is as follows: S1. Workpiece placement and grinding: Place the workpiece to be processed on the mounting base 11 and fix it. Start the multi-station grinding assembly 2. The support frame 20 drives the grinding machine 21 to rise and fall, so that the grinding machine 21 contacts the workpiece surface and grinds the workpiece.

[0066] S2. Main laser switching and detection: During the grinding process, the main laser detection component 3 is activated to perform online laser scanning detection on the wear profile of the grinding wheel and obtain wear information on the workpiece surface.

[0067] S3. Secondary Laser Switching and Inspection: After the main laser inspection component 3 has been working for a certain period of time, the secondary laser inspection component 4 is activated to perform auxiliary inspection or verification inspection on the workpiece surface, so as to improve the accuracy and repeatability of grinding wheel wear profile inspection.

[0068] S4. Main and auxiliary laser detection and calibration: The main laser detection component 3 and the auxiliary laser detection component 4 operate alternately when detecting the workpiece. During the alternating operation, there will be a period of overlapping working time when they are both in working condition. During this overlapping working time, the main laser detection component 3 and the auxiliary laser detection component 4 are compared and detected to determine their working condition. After the alternating operation, the cleaning component 7 can be activated to clean the workpiece.

[0069] S5. Cleaning of cleaning component 7: When stains are attached to the surface of the main laser detection component 3 or the auxiliary laser detection component 4, the servo motor 76 drives the cleaning brush 74 to rotate. Under the action of the limit spring 732, the cleaning brush 74 floats elastically along the height direction and brushes and cleans the surface of the main laser detection component 3 and the auxiliary laser detection component 4. The cleaned stains enter the cleaning tank 73 and are collected in the collection tank 72.

[0070] S6. Air jet cleaning: After the cleaning brush 74 has finished brushing, turn on the air nozzle 75 in the collection tank 72 to spray air in a directional manner on the cleaned test surface and inside the collection tank 72 to further blow away residual stains and guide the stains into the collection tank 72 for centralized collection to avoid secondary pollution.

[0071] S7. Laser head calibration: After the detection components are replaced or cleaned, the cleaning scraper 71 is rotated to the calibration position so that the calibration block 78 in the collection tank 72 focuses and calibrates the laser beams of the main laser detection component 3 and the auxiliary laser detection component 4. After completion, the control turntable 5 is reset and the device re-enters the next grinding and detection cycle.

[0072] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An online laser monitoring and positioning device for grinding wheel wear, characterized in that: It includes a chassis (1), a mounting base (11), a multi-station grinding wheel assembly (2) housed in the chassis (1), a main laser detection assembly (3) and a secondary laser detection assembly (4); The multi-station grinding wheel assembly (2) includes a driver (22) mounted on a chassis (1). The output end of the driver (22) faces downward and is connected to a support frame (20). The support frame (20) is equipped with a grinding wheel (21) for grinding workpieces placed on a mounting base (11). The driver (22) controls the grinding wheel (21) to rise and fall, so that the grinding wheel (21) grinds different positions on the surface of the workpiece. The main laser detection component (3) and the auxiliary laser detection component (4) are symmetrically mounted on the control turntable (5), which is symmetrically located on the inner wall of the chassis (1). The main laser detection component (3) and the auxiliary laser detection component (4) work alternately. A cleaning component (7) is also provided between the main laser detection component (3) and the secondary laser detection component (4).

2. The online laser monitoring and positioning device for grinding wheel wear according to claim 1, characterized in that: The control turntable (5) is also provided with a cooling box (6) on the back side. After the flowing coolant flows through the cooling box (6), it dissipates heat from the main laser detection component (3) and the auxiliary laser detection component (4). The cooling box (6) is also provided with symmetrical cooling pipes, with the end of the cooling pipes away from the cooling box (6) extending outwards.

3. The online laser monitoring and positioning device for grinding wheel wear according to claim 1, characterized in that: The cleaning component (7) includes an incline bracket (70) mounted on a control turntable (5), a cleaning scraper (71) is rotatably mounted on the inner center of the incline bracket (70), and the bottom of the cleaning scraper (71) is also provided with a cleaning groove (73) for cleaning stains and a collection groove (72) for collecting the cleaned stains. A cleaning brush (74) is provided slidingly along the height direction inside the cleaning tank (73), and an air nozzle (75) is provided along the height direction inside the collection tank (72).

4. The online laser monitoring and positioning device for grinding wheel wear according to claim 3, characterized in that: The cleaning tank (73) is integrated with a partition (730) in the middle. The top of the cleaning brush (74) is equipped with a limiting post (731) that slides through the partition (730). A limiting spring (732) is provided between the limiting post (731) and the partition (730) and sleeved on the limiting post (731) so that the cleaning brush (74) has elastic floating ability when it contacts the detection surface.

5. The online laser monitoring and positioning device for grinding wheel wear according to claim 1, characterized in that: A servo motor (76) is installed on the support frame (20). The output end of the servo motor (76) is connected to the cleaning brush (74), which drives the cleaning brush (74) to rotate to achieve cleaning of the surfaces of the main laser detection component (3) and the auxiliary laser detection component (4).

6. The online laser monitoring and positioning device for grinding wheel wear according to claim 3, characterized in that: The collection groove (72) of the cleaning scraper (71) is also equipped with a calibration block (78) for focusing and calibrating the laser beams of the main laser detection component (3) and the auxiliary laser detection component (4).

7. The online laser monitoring and positioning device for grinding wheel wear according to claim 1, characterized in that: The chassis (1) is also equipped with a cooling system that sprays coolant onto the surface of the workpiece.

8. A monitoring and positioning method using an online laser monitoring and positioning device for grinding wheel wear as described in any one of claims 1 to 7, characterized in that: Includes the following steps: S1. Workpiece placement and grinding wheel: Place the workpiece to be processed on the mounting base (11) and fix it. Start the multi-station grinding wheel assembly (2) to grind the workpiece. S2. Main laser switching and detection: During the grinding process, the main laser detection component (3) is activated to perform online laser scanning detection on the wear profile of the grinding wheel and obtain wear information on the surface of the workpiece. S3. Sub-laser switching and detection: After the main laser detection component (3) is working, the sub-laser detection component (4) is started to perform auxiliary detection or verification detection on the workpiece surface; S4. Main and auxiliary laser detection and switching: The main laser detection component (3) and the auxiliary laser detection component (4) operate alternately when detecting the workpiece. During the alternating operation, there will be a period of overlapping working time when they are in working state at the same time. During this overlapping working time, the main laser detection component (3) and the auxiliary laser detection component (4) are compared and detected to determine the working conditions of the main laser detection component (3) and the auxiliary laser detection component (4). S5. Cleaning of cleaning components: When stains adhere to the surface of the main laser detection component (3) or the auxiliary laser detection component (4), the cleaning component (7) is activated and the surfaces of the main laser detection component (3) and the auxiliary laser detection component (4) are brushed and cleaned. The stains after cleaning are collected in a unified manner. S6. Air jet cleaning: After the cleaning component (7) has finished brushing, spray air in a directional manner on the surface of the main laser detection component (3) or the auxiliary laser detection component (4) to further remove residual stains; S7. Laser head calibration: After the workpiece is polished, the laser beams of the main laser detection component (3) and the auxiliary laser detection component (4) are actively focused and calibrated to facilitate the device to re-enter the next round of polishing and detection cycle.

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