Comprehensive grinding device for automobile brake disc

Abstract

The invention relates to the technical field of automobile part machining, and discloses an automobile brake disc comprehensive grinding device which comprises a machine body, a shell, at least two grinding modules working independently, a three-axis moving assembly, a clamping workpiece and a control part. The control part comprises an acquisition module, a preprocessing module, a double-module independent motion control module, a polishing parameter self-adaptive adjustment module, a dust removal linkage control module and a safety monitoring and emergency control module, and clamping pressure, position, surface roughness and temperature data are acquired in real time through multiple sensors; after processing, the motion trails, the polishing parameters and the operation state of the dust removal system of the double modules are dynamically adjusted, and closed-loop control and safety monitoring are achieved; synchronous and efficient grinding of the surface and the side face of the brake disc is achieved, the self-adaptive adjusting capacity is achieved, and the grinding precision, efficiency and operation safety are effectively improved.

Description

Technical Field

[0001] This invention relates to the field of automotive parts processing technology, specifically to a device for fully grinding automotive brake discs. Background Technology

[0002] As the automotive industry rapidly develops towards high performance and high safety, the braking system, as a core safety component, places increasingly stringent requirements on the machining precision and surface quality of brake discs. The surface flatness and side smoothness of the brake disc directly affect the stability of friction during braking, heat dissipation efficiency, and service life; its machining quality is directly related to vehicle driving safety. In the automotive manufacturing and after-sales maintenance fields, brake disc grinding is a key process to ensure its performance, requiring comprehensive and meticulous machining of both the surface and sides.

[0003] Currently, automotive brake disc grinding equipment is mainly divided into two categories. One type is traditional single-module grinding equipment, which uses a single grinding head to grind the surface and sides of the brake disc sequentially, relying on manual adjustment of the grinding head position and grinding parameters. The other type is a semi-automatic grinding system, equipped with a simple moving mechanism, which can partially reduce manual intervention, but still operates using fixed grinding parameters. Both types of equipment focus on achieving basic grinding of the brake disc, without fully considering the needs for simultaneous processing of multiple parts and dynamic adaptation.

[0004] However, existing technologies have significant limitations. Traditional single-module equipment has low grinding efficiency, and the sequential processing of the surface and sides leads to excessively long cycles. Furthermore, manual adjustments can easily result in uneven grinding precision, making it difficult to meet the demands of mass production. While semi-automatic systems improve efficiency to some extent, they lack real-time sensing of key parameters such as temperature, roughness, and clamping pressure during the grinding process. Fixed parameter operations can easily lead to over-grinding, under-grinding, or thermal damage to the brake disc. At the same time, dual-part grinding lacks independent motion control, making the trajectory prone to interference. Moreover, the integration of dust collection and safety protection is low, affecting the working environment and posing safety hazards. These technologies cannot meet the modern automotive industry's demands for high-precision, high-efficiency, and high-safety grinding. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a comprehensive grinding device for automotive brake discs, which solves the problems of low efficiency, difficulty in guaranteeing grinding accuracy, lack of adaptive adjustment capability, and insufficient operational safety of existing automotive brake disc grinding equipment.

[0006] To achieve the above objectives, the present invention provides the following technical solution: comprising a body and an outer shell, characterized in that it further comprises: At least two independently operating grinding modules, namely grinding module one and grinding module two, wherein grinding module one is used for grinding the surface of the brake disc and grinding module two is used for grinding the side of the brake disc; The three-axis moving assembly includes an X-axis moving assembly, a Y-axis moving assembly, and a Z-axis moving assembly. The three-axis moving assembly is connected to the first grinding module and the second grinding module, respectively, and is used to drive the two modules to move independently in three-dimensional space. Clamping the workpiece to fix the car brake disc to be ground; The control unit is used to control the movements of the first grinding module, the second grinding module, and the three-axis moving assembly, respectively. The control component includes: The data acquisition module is used to acquire in real time the clamping pressure of the workpiece, the position data of the three-axis moving components, and the surface height and temperature data of the brake disc grinding area; The preprocessing module is used to filter, remove outliers, and standardize the data from the acquisition module, and output a standardized parameter array. The dual-module independent motion control module is used to independently control the three-axis movement trajectory of grinding module one and grinding module two based on the standardized parameter array. The grinding parameter adaptive adjustment module is used to dynamically adjust the rotation speed and feed rate of the grinding module based on the standardized parameter array. The dust removal linkage control module is used to dynamically adjust the wind speed and delayed shutdown time of the dust removal system based on the adjusted grinding parameters; The safety monitoring and emergency control module is used to monitor equipment operation safety indicators in real time and trigger emergency response in case of abnormalities.

[0007] Preferably, the outer shell is a sealed protective structure with an integrated dust removal system for collecting and processing dust and debris generated during the polishing process.

[0008] Preferably, the acquisition module includes a pressure sensor mounted on the workpiece clamping, a displacement sensor mounted on the three-axis moving assembly, and a laser rangefinder and a temperature sensor disposed in the grinding area.

[0009] Preferably, the standardized parameter array output by the preprocessing module includes at least: the triaxial position deviation of grinding module one and grinding module two, the effective clamping pressure, the arithmetic mean surface roughness, and the actual grinding temperature rise.

[0010] Preferably, the dual-module independent motion control module adopts a PID control algorithm to calculate the three-axis movement compensation of grinding module one and grinding module two respectively, and generates the actual driving amount to control the three-axis movement component by combining the preset motion path and the rotation angle of the clamped workpiece.

[0011] Preferably, the adaptive adjustment module for grinding parameters dynamically adjusts the grinding speed and feed rate based on the comparison results of surface roughness, grinding temperature rise, and effective clamping pressure with preset thresholds, prioritizing safety over quality and quality over efficiency.

[0012] Preferably, the dust removal linkage control module calculates the current grinding intensity based on the adjusted grinding speed and feed rate, and dynamically calculates and adjusts the dust removal wind speed and delayed shutdown time based on the grinding intensity and the characteristics of the grinding area.

[0013] Preferably, the safety monitoring and emergency control module monitors dust concentration, working chamber temperature and protective door status in real time; when any safety indicator exceeds the preset threshold, it triggers the emergency shutdown process, controls the grinding module to stop, the three-axis moving component to reset, the clamped workpiece to stop rotating, and activates the audible and visual alarm.

[0014] Preferably, the modules of the control unit communicate with each other via a high-speed data bus to form a closed-loop control system for sensing, processing, decision-making, execution, and feedback.

[0015] This invention provides a device for fully grinding automotive brake discs. It has the following beneficial effects: 1. This invention utilizes a control module comprised of a data acquisition module, a preprocessing module, a dual-module independent motion control module, a grinding parameter adaptive adjustment module, a dust removal linkage control module, and a safety monitoring and emergency control module. This enables real-time sensing, dynamic adjustment, and safety protection of the brake disc grinding status, equipment operating parameters, and working environment. Based on real-time feedback of grinding accuracy, temperature rise, and pressure data, the system dynamically adjusts the dual-module motion trajectory and grinding parameters, thus achieving a fundamental shift from fixed-parameter grinding to adaptive precision grinding. While ensuring the quality of brake disc grinding, it avoids the problems of over-grinding, under-grinding, and energy waste caused by fixed parameters in traditional grinding equipment.

[0016] 2. This invention utilizes a multi-dimensional constraint adjustment model designed within the adaptive adjustment module for grinding parameters. This model quantitatively integrates brake disc surface roughness, grinding temperature rise, and effective clamping pressure, providing precise and unified digital criteria for adjusting grinding parameters. This transforms the system's adjustment behavior from a simple response based on a single indicator to a comprehensive intelligent decision-making process based on quality, efficiency, and safety. This significantly enhances the scientific rigor and precision of the grinding process, effectively preventing brake disc damage or substandard grinding risks caused by improper parameters.

[0017] 3. This invention utilizes a tiered monitoring and alarm mechanism within the safety monitoring and emergency control module to integrate key information such as the motion status of the dual modules, real-time values ​​of grinding parameters, surface roughness data, dust concentration, and working chamber temperature in real time, forming a closed-loop monitoring system for the entire process. When potential risks such as excessive temperature, excessive dust, or abnormal door conditions occur, the system can immediately trigger corresponding alarm signals and warning prompts. This allows for rapid risk identification and response without the need for an additional human-machine interface, significantly improving the safety management level and operational convenience of the entire grinding process.

[0018] 4. This invention achieves rapid coordination among sensing, processing, decision-making, and execution stages through clear data interfaces between modules and high-speed data bus (CAN / Ethernet) transmission. The dual-module independent motion design, combined with the parallel data processing architecture, not only ensures the system's rapid response and real-time correction to grinding deviations, enabling efficient simultaneous grinding of the brake disc surface and sides, but also reduces the centralized dependence on the core controller's computing power, improving the overall system's operational stability and grinding efficiency.

[0019] 5. This invention achieves multi-dimensional synchronous and precise adjustment of the grinding trajectory of different parts of the brake disc through the integrated and coordinated control of dual-module independent motion control modules and three-axis moving components. This method can cover the grinding requirements of the brake disc surface and sides in one go. Compared with the traditional single-module component area grinding method, it significantly shortens the grinding cycle of a single brake disc, improves production efficiency, and reduces equipment operating wear and tear and the frequency of manual intervention. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram in an embodiment of the present invention; Figure 3 This is a schematic diagram in an embodiment of the present invention; Figure 4 This is a schematic diagram of the control component architecture of the present invention.

[0021] The components include: 1. Machine body; 2. Outer shell; 3. Grinding module one; 4. Grinding module two; 5. X-axis moving assembly; 6. Y-axis moving assembly; 7. Z-axis moving assembly; 8. Workpiece clamping assembly; and 9. Control components. Detailed Implementation

[0022] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some 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.

[0023] Please see the appendix Figure 1 -Appendix Figure 4 This invention provides a comprehensive grinding device for automotive brake discs. The overall structure of the device mainly includes: a body 1, which serves as the mounting base for all functional modules; an outer shell 2 covering the body 1, which constitutes a sealed protective working chamber; and core functional components installed inside the working chamber. The composition and connection relationships of the core functional components are as follows: This device is equipped with two independently driven and controlled grinding modules; Grinding module 1 3: its installation position and orientation are set to be used specifically for grinding the friction surface of the brake disc (i.e. the disc surface in contact with the brake pads); Grinding module 2 4: its installation position and orientation are set to be used specifically for grinding the side of the brake disc (i.e. the side of the ventilation groove or the outer edge of the disc hub, etc.).

[0024] In this embodiment, grinding module 3 and grinding module 4 are driven by independent three-axis moving components, realizing completely independent motion trajectory control; the three-axis moving components consist of X-axis moving component 5, Y-axis moving component 6 and Z-axis moving component 7 forming a three-axis moving architecture; therefore, this design allows the two grinding heads to process different parts of the brake disc simultaneously and asynchronously, greatly improving efficiency.

[0025] The workpiece 8 is located at the center of the working chamber and is used to hold the brake disc to be polished. In this embodiment, the workpiece 8 usually includes a rotatable chuck or special fixture that can firmly hold brake discs of different diameters and may be indexed and rotated under the command of the control system so that the entire circumference of the disc can be polished.

[0026] The control unit 9 is installed on the outside of the machine body in a convenient location; in this embodiment, a dust removal system (not shown separately in the figure) is integrated on its side wall or top. The system includes a suction port, pipes, and a dust collection box (or connected to an external central dust collector), which can remove metal dust and debris generated during the grinding process in real time, keeping the working environment clean and preventing pollution.

[0027] Based on the above, the working process of this embodiment is briefly described as follows: After the operator clamps the brake disc onto the workpiece 8 and closes the protective door, the workpiece 8 may rotate to the starting angle. Grinding module 1 3, driven by its three-axis moving component, performs line-by-line scanning grinding on the upper or lower surface of the brake disc according to a preset path. At the same time or in sequence, grinding module 2 4, driven by its independent three-axis moving component, grinds the side area of ​​the brake disc. Throughout the process, the dust removal system works continuously.

[0028] The control component 9 includes a control acquisition module, which includes a fixed acquisition end and a grinding acquisition end. The fixed acquisition end is used to acquire the pressure and position deviation at a fixed position, and the grinding acquisition end is used to acquire the surface data and temperature data during grinding, thereby determining real-time adjustments during the grinding process and ensuring the product qualification rate.

[0029] The control unit (9) uses an industrial-grade embedded controller as its core hardware platform. It features multi-channel analog / digital signal input / output interfaces and a high-speed data bus (such as CAN or Ethernet), enabling efficient adaptation to peripherals such as pressure sensors, temperature sensors, displacement sensors, and servo motor drivers, thus meeting the requirements for real-time multi-dimensional data acquisition and high-response control. The software system running on this hardware platform adopts a modular design, such as... Figure 4 As shown, it includes: a data acquisition module, a preprocessing module, a dual-module independent motion control module, a grinding parameter adaptive adjustment module, a dust removal linkage control module, and a safety monitoring and emergency control module. These modules communicate through clearly defined data interfaces, forming a complete closed loop of perception, processing, decision-making, execution, and feedback. This enables integrated management and control of synchronous and efficient grinding of the surface and sides of automotive brake discs, precise control of grinding quality, cleanliness of the working environment, and safety protection for equipment and personnel. The acquisition module is used to acquire in real time the fixed pressure data of the clamped workpiece 8, the actual position data of the three-axis moving components 5, 6, and 7, and the surface height and temperature data of the brake disc grinding area.

[0030] In one specific embodiment, the acquisition module is directly connected to the physical sensors; high-precision pressure sensors are installed at key clamping points of the workpiece 8. The module reads the output voltage signals of each sensor in real time at a sampling frequency of 3Hz and converts them into pressure values ​​through a built-in calibration coefficient. (Unit: Newtons, N), where i is the sensor number (i=1,2,...,n). Simultaneously, high-precision displacement sensors installed on the X-axis moving assembly 5, Y-axis moving assembly 6, and Z-axis moving assembly 7 synchronously acquire the actual three-dimensional coordinates of grinding module 1 3 and grinding module 2 4. , , )and( , , The height of measuring points on the brake disc surface is acquired using a laser rangefinder deployed in the polishing area at a sampling frequency of 5Hz. (j=1,2,...,m); Real-time temperature of the grinding area is collected by a temperature sensor. and ambient temperature of the work cabin .

[0031] The acquisition module adds a synchronization timestamp to all acquired data, and sets the pressure data array F=[ , ,..., ]、Dual-module three-dimensional actual coordinate array S=[( , , (), , , )], Surface height data array H=[ , ,..., ] and temperature data array T=[ , The data is packaged into raw data frames and sent to the preprocessing module in real time via the internal high-speed communication interface (CAN / Ethernet).

[0032] The preprocessing module is used to receive the raw data frames transmitted by the acquisition module, perform filtering, outlier removal and standardization calculations, and output a standardized parameter array.

[0033] In one specific embodiment, after receiving the raw data frame (RawData) via a high-speed communication interface (CAN / Ethernet), the preprocessing module first initiates a multi-dimensional data noise reduction process. A moving average filtering algorithm is used to process the pressure data array, surface height data array, and temperature data array, effectively eliminating random noise interference from the sensor.

[0034] Subsequently, based on preset anomaly detection thresholds (including pressure change threshold, temperature jump threshold, and height data anomaly threshold), the filtered raw data is checked group by group to remove abnormal data that exceeds the normal grinding conditions of the brake disc, ensuring the validity of the data input into the calculation process.

[0035] For the filtered valid data, standardized parameter calculations are performed: based on the dual-module 3D actual coordinate array and the preset target position ( , , ), ( , , Calculate the three-axis position deviations of grinding module one and module two; the calculation formula is: , , and , , ; Based on pressure value Calculate the effective clamping pressure The calculation formula is: , , This refers to the sensor's zero-point offset. Based on surface height data Calculate the arithmetic mean surface roughness. The calculation formula is: , , This refers to the standard reference surface height of the brake disc. Based on the temperature data, the actual temperature rise during grinding is calculated using the following formula: , The value for the natural heat dissipation compensation of the working chamber is 3℃.

[0036] The preprocessing module integrates all standardized parameters into a parameter array. It is synchronously transmitted to the dual-module independent motion control module, the grinding parameter adaptive adjustment module, and the safety monitoring and emergency control module via a high-speed data bus.

[0037] The dual-module independent motion control module is used to receive standardized parameters output by the preprocessing module, independently control the three-axis movement trajectory of grinding module one (3) and grinding module two (4), and cooperate with the rotation of the clamping workpiece (8) to achieve precise and efficient synchronous grinding of the surface and side of the brake disc.

[0038] In one specific embodiment, the module receives the parameter array Para sent by the preprocessing module through a high-speed data bus, extracts the three-axis position deviation of grinding module one and the three-axis position deviation of grinding module two from it, and reads the preset dual-module motion path parameters (module one progressive scan path, module two circumferential feed path) and brake disc radius R.

[0039] The dual-module independent motion control module first initializes the control parameters and sets the core coefficient of the PID control: proportional coefficient. Values ​​range from 0.8 to 1.2; integral coefficient Values ​​range from 0.1 to 0.3; differential coefficients Values ​​range from 0.05 to 0.1, sampling period The time is fixed at 0.2s to ensure the speed and stability of deviation correction.

[0040] The core PID control parameters were determined through tests of brake disc surface grinding precision requirements and three-axis motion component response speed, experimental verification to eliminate static deviation, and simulation analysis to suppress motion overshoot. The values ​​for each parameter are: proportional coefficient. Value 1.0, integral coefficient The value is 0.2, and the differential coefficient is... The value is 0.08.

[0041] For grinding module one, based on its surface grinding task requirements, the three-axis movement compensation amount is calculated using a PID algorithm. The calculation formula is as follows: (i=x, y, z); in, For the cumulative positional deviation of module one, This refers to the positional deviation of module one in the previous cycle; Then, the actual driving amount is calculated by combining the preset movement amount. The calculation formula is as follows: ; For the side grinding task of grinding module two, in addition to calculating the three-axis movement compensation amount using the same PID algorithm, (i=x, y, z), and also needs to be combined with the real-time rotation angle of the clamped workpiece 8. ( The formula for calculating the circumferential position correction is as follows: The actual driving force is obtained by adding the compensation amount: ; The dual-module independent motion control module sends two sets of actual drive quantities to the corresponding X-axis, Y-axis, and Z-axis motion component drivers respectively through the analog / digital signal output interface, while simultaneously sending synchronous rotation commands to the workpiece clamping 8 rotation control unit. During the grinding process, the module collects the actual position data of the dual modules after adjustment in real time and feeds it back to the preprocessing module to form a closed-loop control, continuously correcting motion deviations, avoiding trajectory interference between modules, and ensuring grinding accuracy and efficiency.

[0042] The adaptive adjustment module for grinding parameters is used to receive standardized parameters output by the preprocessing module and dynamically adjust the rotation speed and feed rate of the grinding module based on the grinding quality of the brake disc and the operating status of the equipment, so as to achieve a dynamic balance between grinding quality, efficiency and safety.

[0043] In one specific embodiment, the module receives the parameter array Para sent by the preprocessing module via a high-speed data bus and extracts the surface arithmetic mean roughness from it. Actual temperature rise during polishing Clamping effective pressure At the same time, preset grinding parameter baseline values ​​and constraint thresholds are set.

[0044] The module first initializes the control parameters and sets the grinding parameter reference values: speed reference value. The value range is 2000-3000 r / min. In this scheme, through brake disc material (cast iron) compatibility tests and grinding efficiency tests, the parameter value was determined to be 2500 r / min; feed rate reference value. The value range is 0.05-0.1 mm / r. In this scheme, through surface roughness compliance verification and tool wear analysis, the parameter value is determined to be 0.08 mm / r.

[0045] Setting constraint thresholds and adjustment coefficients: Upper limit of acceptable surface roughness Based on the grinding precision standards of the automotive brake disc industry, the parameter value is determined to be 1.0. Temperature rise safety limit Through brake disc thermal deformation tests, the parameter value was determined to be 35℃; the lower limit of clamping pressure was also determined. Through clamping stability testing, the parameter value was determined to be 600N; temperature rise attenuation coefficient. Through parameter adaptation simulation under different temperature rise conditions, the parameter value was determined to be 0.07.

[0046] Simultaneously set parameter adjustment boundaries: upper and lower speed limits. =1500r / min =3500 r / min, feed rate upper and lower limits =0.03mm / r =0.15mm / r, to avoid parameters exceeding the safe operating range of the equipment.

[0047] Real-time monitoring and determination of the current operating status: If > It is determined to be under-polished; if > If it is determined to be overheating; < The clamping mechanism was determined to be loose. Parameter adjustments were performed based on the priority order of safety > quality > efficiency. Grinding speed adjustment: Combining the dual constraints of surface roughness and temperature rise, through formula... Calculate the adjusted rotational speed to ensure it remains within the set upper and lower limits. Grinding feed rate adjustment: Combining clamping pressure and surface roughness constraints, it is adjusted using a formula. Calculate and adjust the feed rate. If the clamping pressure is insufficient, reduce the feed rate to avoid workpiece displacement. If the surface roughness exceeds the standard, adjust the feed rate to compensate for the grinding effect.

[0048] The grinding parameter adaptive module transmits the adjusted rotation speed via a high-speed data bus. and feed rate The parameters are simultaneously sent to the drive control units of grinding module 3 and grinding module 4, and the adjusted parameters are fed back to the dust removal linkage control module to provide a basis for dynamic matching of dust removal wind speed. During the grinding process, the parameter execution effect data is collected in real time and fed back to the preprocessing module to form a closed-loop adjustment and continuously optimize the grinding parameters.

[0049] The dust removal linkage control module is used to receive the grinding parameters output by the grinding parameter adaptive adjustment module, and dynamically adjust the wind speed and delayed shutdown time of the dust removal system in combination with the characteristics of the grinding area, so as to achieve a precise match between the amount of dust generated and the dust removal capacity.

[0050] In one specific embodiment, the dust removal linkage control module receives the adjusted rotation speed sent by the grinding parameter adaptive adjustment module via a high-speed data bus. and feed rate At the same time, the baseline parameters of the dust removal system and the information of the grinding area are preset.

[0051] First, initialize the control parameters and set the dust removal baseline parameters: dust removal baseline wind speed. The value range is 8-11 m / s. In this scheme, through dust capture efficiency tests under different grinding intensities, the parameter value was determined to be 9 m / s; the reference delay time The value range is 3-6s. In this solution, the parameter value was determined to be 4s after verification of the residual dust removal effect.

[0052] Setting regional coefficients and correlation parameters: Regional coefficients Module 1 (Surface Polishing) is configured for different polishing areas. The value range is 0.8-1.1. In this scheme, through the analysis of surface grinding dust diffusion characteristics, the parameter value is determined to be 1.0; Module 2 (side grinding) The value range is 1.1-1.3. In this solution, through testing the dust diffusion range during side grinding, the parameter value was determined to be 1.2 to ensure that the wind speed is additionally increased during side grinding to accommodate the strong dust diffusion characteristics; at the same time, the baseline value of the grinding parameters is read. , This serves as a reference benchmark for calculating grinding intensity.

[0053] The module calculates the current grinding intensity in real time. * Based on this, the dust removal parameters are dynamically adjusted: Dust collector fan speed adjustment: via formula Calculate the required dust removal air velocity in real time. The higher the grinding intensity, the greater the air velocity, to ensure that dust is removed in real time. Delayed shutdown time adjustment: via formula Calculate the delay shutdown time after grinding stops. Must meet This ensures that residual dust is fully removed and prevents dust accumulation in the work chamber.

[0054] The dust removal linkage control module outputs the calculated dust removal wind speed through a digital signal output interface. and delayed shutdown time The data is simultaneously sent to the dust removal system's fan controller, driving the fan to run at the set wind speed. After grinding stops, the fan shuts down after a countdown time. At the same time, the module feeds back the dust removal system's operating status data (actual wind speed, running time) to the safety monitoring and emergency control module.

[0055] The safety monitoring and emergency control module is used to monitor key safety indicators during equipment operation in real time. When situations such as dust concentration exceeding limits, excessively high working chamber temperature, or abnormal opening of protective doors occur, it can quickly trigger graded emergency response.

[0056] In one specific embodiment, the safety monitoring and emergency control module receives feedback data from multiple modules via a high-speed data bus: obtaining the actual dust removal wind speed from the dust removal linkage control module. The adjusted rotation speed is obtained from the grinding parameter adaptive adjustment module. Feed rate Obtain the actual temperature rise during grinding from the preprocessing module. Working cabin ambient temperature Natural heat dissipation compensation Simultaneously, the door status sensor collects the opening and closing signals of the protective door in real time. .

[0057] First, initialize the safety parameters and set the safety threshold and core coefficient: dust concentration safety threshold. The value range is 4-6 mg / m³ 3 In this plan, based on industrial dust environmental emission standards and personnel health protection requirements, the parameter value is determined to be 5mg / m³. 3 ; Working compartment safe temperature The value range is 55-65℃. In this scheme, through equipment heat resistance performance testing and brake disc thermal damage critical value analysis, the parameter value is determined to be 60℃; dust generation coefficient The value range is 0.01-0.03 mg / (r·mm·s). In this scheme, through dust generation tests under different grinding intensities, the parameter value was determined to be 0.02 mg / (r·mm·s); the protective door status judgment rule is set as follows. =1 (Off) =0 (enabled), serving as a safety prerequisite for device startup and operation.

[0058] The module performs real-time multi-dimensional security monitoring and assessment: Dust concentration monitoring: collecting the duration of a single grinding cycle The formula for calculating real-time dust concentration is as follows: ,like The dust concentration was determined to be excessive. Working chamber temperature monitoring: The actual temperature of the working chamber is calculated using the following formula: ,like The temperature was determined to be out of limit. Security door status monitoring: real-time reading Signal, device startup conditions are =1, if detected during operation =0, indicating a gate abnormality; the logical expression is runtime permission = .

[0059] When any safety anomaly is triggered, the module immediately initiates the emergency shutdown procedure: it sends a shutdown command for the grinding module to the dual-module independent motion control module, a reset command to the three-axis moving component, and a stop command to the workpiece clamping control unit via the emergency control signal interface. At the same time, it keeps the dust removal system running continuously according to the delayed shutdown time to ensure the removal of residual dust. Simultaneously, it sends an audible and visual alarm signal to the human-machine interface (HMI) to inform the operator of the anomaly type and uploads the safety anomaly data (anomaly type, occurrence time, and real-time parameter values) to the storage unit of the industrial-grade embedded controller for easy fault tracing and analysis.

[0060] 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 comprehensive grinding device for automotive brake discs, comprising a body (1) and a housing (2), characterized in that, Also includes: At least two independently operating grinding modules, namely grinding module one (3) and grinding module two (4), wherein grinding module one (3) is used for grinding the surface of the brake disc and grinding module two (4) is used for grinding the side of the brake disc; The three-axis moving assembly includes an X-axis moving assembly (5), a Y-axis moving assembly (6) and a Z-axis moving assembly (7). The three-axis moving assembly is connected to the first grinding module (3) and the second grinding module (4) respectively, and is used to drive the two modules to move independently in three-dimensional space. Clamping workpiece (8) is used to fix the car brake disc to be polished; The control unit (9) is used to control the movement of the first grinding module (3), the second grinding module (4) and the three-axis moving assembly respectively; The control element (9) includes: The data acquisition module is used to acquire in real time the clamping pressure of the workpiece (8), the position data of the three-axis moving components, and the surface height and temperature data of the brake disc grinding area; The preprocessing module is used to filter, remove outliers, and standardize the data from the acquisition module, and output a standardized parameter array. The dual-module independent motion control module is used to independently control the three-axis movement trajectory of the first (3) and the second (4) grinding modules based on the standardized parameter array. The grinding parameter adaptive adjustment module is used to dynamically adjust the rotation speed and feed rate of the grinding module based on the standardized parameter array. The dust removal linkage control module is used to dynamically adjust the wind speed and delayed shutdown time of the dust removal system based on the adjusted grinding parameters; The safety monitoring and emergency control module is used to monitor equipment operation safety indicators in real time and trigger emergency response in case of abnormalities.

2. The automotive brake disc full-grinding device according to claim 1, characterized in that, The outer shell (2) is a sealed protective structure with an integrated dust removal system inside, used to collect and process the dust and debris generated during the polishing process.

3. The automotive brake disc full-grinding device according to claim 1, characterized in that, The acquisition module includes a pressure sensor installed on the workpiece (8), a displacement sensor installed on the three-axis moving assembly, and a laser rangefinder and a temperature sensor set in the grinding area.

4. The automotive brake disc full-grinding device according to claim 1, characterized in that, The standardized parameter array output by the preprocessing module includes at least the triaxial position deviation of grinding module one (3) and grinding module two (4), the effective clamping pressure, the arithmetic mean surface roughness, and the actual grinding temperature rise.

5. The automotive brake disc full-grinding device according to claim 1, characterized in that, The dual-module independent motion control module adopts a PID control algorithm to calculate the three-axis movement compensation of grinding module one (3) and grinding module two (4) respectively, and generates the actual driving amount to control the three-axis movement components by combining the preset motion path and the rotation angle of the clamping workpiece (8).

6. The automotive brake disc full-grinding device according to claim 1, characterized in that, The adaptive adjustment module for grinding parameters dynamically adjusts the grinding speed and feed rate based on the comparison results of surface roughness, grinding temperature rise, and effective clamping pressure with preset thresholds, prioritizing safety over quality and quality over efficiency.

7. The automotive brake disc full-grinding device according to claim 1, characterized in that, The dust removal linkage control module calculates the current grinding intensity based on the adjusted grinding speed and feed rate, and dynamically calculates and adjusts the dust removal wind speed and delayed shutdown time based on the grinding intensity and the characteristics of the grinding area.

8. The automotive brake disc full-grinding device according to claim 1, characterized in that, The safety monitoring and emergency control module monitors the dust concentration, working chamber temperature and protective door status in real time. When any safety indicator exceeds the preset threshold, it triggers the emergency shutdown process, controls the grinding module to stop, the three-axis moving component to reset, the workpiece clamping (8) to stop rotating, and starts the audible and visual alarm.

9. The automotive brake disc full-grinding device according to claim 1, characterized in that, The modules of the control unit (9) communicate with each other through a high-speed data bus to form a closed-loop control system for sensing, processing, decision-making, execution and feedback.

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