A quick tool alignment method and system for automatic rail weld grinding

Abstract

The present application relates to a kind of quick tool setting method and system for automatic polishing of steel rail weld, method includes: before polishing, in the case where grinding wheel does not rotate, grinding wheel is fed to steel rail, and the position of the feed motor of polishing equipment in the feeding process is recorded in real time, and the current data of feed motor in the feeding process, from the recorded data, find out the position corresponding to the feed motor when the current of feed motor exceeds the set threshold, and determine the rough polishing reference with this position as reference, that is, realize the rough tool setting of polishing reference;During polishing, in the case where grinding wheel rotates, the position of the rough tool setting is used as the starting point of accurate tool setting, grinding wheel is fed to steel rail, and the contact condition of grinding wheel and steel rail is judged by analyzing the current change of polishing motor in real time, to realize the accurate tool setting of polishing reference.The present application constructs the automatic tool setting method based on rough tool setting and accurate tool setting, can convert the tool setting process dependent on artificial into automatic tool setting process.

Description

Technical Field

[0001] This invention relates to the field of automatic rail grinding technology, and in particular to a rapid tool setting method and system for automatic grinding of rail welds. Background Technology

[0002] With the increase in railway operating mileage and transport density, the replacement of old rails and turnouts is becoming more frequent. Rail replacement requires online welding. Currently, online rail welding mostly uses aluminothermic welding, and the weld seams left after welding are mostly manually ground using a profile grinder.

[0003] The above-mentioned weld grinding operation relies entirely on manual labor. As older skilled workers retire and newcomers increasingly avoid heavy physical labor, the problems of reliance on manual experience, low efficiency, and inconsistent results are becoming more and more acute. Therefore, the market urgently needs a device that can automatically grind rail welds.

[0004] A key technology to be solved in automated weld grinding is how to achieve an automated, fast, and precise tool setting process, transforming the original manual tool setting process that relies on touch and vision into an automated one. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is the lack of grinding reference when the grinding of rail welds is transformed from manual operation to automated operation.

[0006] To solve the above-mentioned technical problems, the present invention provides a rapid tool setting method for automatic grinding of rail welds, comprising:

[0007] Before grinding, with the grinding wheel of the grinding equipment not rotating, feed the grinding wheel toward the rail and record the position of the feed motor of the grinding equipment and the current data of the feed motor in real time. Based on the recorded data, find the position of the feed motor when the current of the feed motor exceeds the set threshold, and use this position as a reference to determine the rough grinding reference, so as to achieve rough tool setting of the grinding reference.

[0008] During the grinding process, with the grinding wheel rotating, the position of the rough setting is used as the starting point for the precise setting. The grinding wheel is fed toward the rail, and the contact between the grinding wheel and the rail is judged in real time by analyzing the current change of the grinding motor, so as to achieve precise setting of the grinding reference.

[0009] The grinding motor is used to drive the grinding wheel to rotate, and the feed motor is used to drive the grinding wheel to advance axially.

[0010] In one embodiment of the present invention, before grinding, with the grinding wheel of the grinding equipment not rotating, the grinding wheel is fed towards the guide rail, and the position of the feed motor of the grinding equipment and the current data of the feed motor during the feeding process are recorded in real time. Based on the recorded data, the position corresponding to the feed motor when the feed motor current exceeds a set threshold is found, and the rough grinding reference is determined based on this position, thereby realizing the rough tool setting of the grinding reference. The method includes:

[0011] S11: Check and ensure that the grinding motor is stopped and the grinding wheel is directly above the rail;

[0012] S12: Set the first target speed for the feed motor to drive the feed axis to move axially. The target position is the maximum positive position, where the maximum positive position is the position where the feed axis moves axially downwards towards the rail to the furthest point.

[0013] S13: When the feed axis moves axially downwards towards the rail, a timer for recording data is simultaneously activated to record the position of the feed motor and the current of the feed motor.

[0014] S14: After the feed axis moves axially to the target position, stop recording data and extract low-frequency current data below AHz from the recorded feed motor current;

[0015] S15: Find the feature of current exceeding the set threshold from the low-frequency current data below AHz, and find the corresponding position of collision between the grinding wheel and the rail in the recorded feed motor position data, and record it as X_0. The feature of current exceeding the set threshold is the current change generated when the grinding wheel collides with the rail.

[0016] S16: Offset X_0 away from the rail by a millimeter to obtain X_0-a. Move the feed axis of the feed motor to X_0-a to complete the rough setting of the grinding reference.

[0017] In one embodiment of the present invention, the method of extracting current data below AHz from the recorded feed motor current includes: extracting current data below 10Hz from the recorded feed motor current using a low-pass filtering algorithm.

[0018] In one embodiment of the present invention, the value of the first target velocity is in the range of 30-60 mm / s.

[0019] In one embodiment of the present invention, the timing frequency of the timer is greater than or equal to 500Hz.

[0020] In one embodiment of the present invention, during the grinding process, while the grinding wheel is rotating, the position of the rough setting is used as the starting point for the precise setting. The grinding wheel is fed towards the rail, and the contact condition between the grinding wheel and the rail is determined in real time by analyzing the current change of the grinding motor, thereby achieving precise setting of the grinding reference. The method for achieving precise setting of the grinding reference includes:

[0021] S21: Using the feed motor at X_0-a as the precise tool setting starting point, set the second target speed for the feed motor to drive the feed axis to move axially. The target position is the maximum positive position. At the same time, start the acquisition of the spindle current of the grinding motor and extract data below BHz in real time.

[0022] S22: Start the grinding motor and wait for it to reach the target speed;

[0023] S23: When the grinding motor reaches the target speed, the feed axis moves axially;

[0024] S24: Determine whether the data below BHz of the grinding motor spindle current exceeds C% of the idle current. If it does, the feed axis stops axial movement, completes the precise correction of the grinding wheel, and achieves precise tool setting of the grinding reference. If the grinding motor spindle current exceeds the idle current even when the feed axis moves to the maximum positive position, it indicates that the grinding equipment is abnormal. The idle current is the current when the grinding wheel is idling and not cutting. The value range of C% is 15-20%.

[0025] In one embodiment of the present invention, the value of the second target velocity is in the range of 2-3 mm / s.

[0026] To solve the above-mentioned technical problems, the present invention provides a rapid tool setting system for automatic grinding of rail welds, comprising:

[0027] The coarse tool setting module is used to feed the grinding wheel toward the rail before grinding, without rotating the grinding wheel of the grinding equipment. It records the position of the feed motor of the grinding equipment and the current data of the feed motor in real time during the feeding process. Based on the recorded data, it finds the position of the feed motor when the current of the feed motor exceeds the set threshold, and uses this position as a reference to determine the coarse grinding reference, thus realizing the coarse tool setting of the grinding reference.

[0028] The precision tool setting module is used during the grinding process. With the coarse tool setting position as the starting point, the grinding wheel is fed towards the rail while the grinding wheel is rotating. The module also analyzes the current changes of the grinding motor in real time to determine the contact between the grinding wheel and the rail, thereby achieving precise tool setting of the grinding reference.

[0029] The grinding motor is used to drive the grinding wheel to rotate, and the feed motor is used to drive the grinding wheel to feed axially.

[0030] To solve the above-mentioned technical problems, the present invention provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the steps of the rapid tool setting method for automatic grinding of rail welds as described above.

[0031] To solve the above-mentioned technical problems, the present invention provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, it implements the steps of the rapid tool setting method for automatic grinding of rail welds as described above.

[0032] The technical solution of the present invention has the following advantages compared with the prior art:

[0033] This invention uses a rough setting tool once before grinding to find a rough reference for grinding; then, using the found rough reference as the starting point for precise setting, the precise setting is completed. After grinding at that angle, the grinding wheel is returned to the rough reference, and the grinding wheel is adjusted to the next target angle. The precise setting at the next target angle is then performed, and the above process is repeated until the grinding of the entire rail head is completed.

[0034] This invention constructs an automatic tool setting method based on coarse and precise tool setting, creatively transforming the manual tool setting process into an automatic one, making rail weld grinding more precise and effective, while improving rail weld grinding efficiency, and enabling widespread application. Attached Figure Description

[0035] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0036] Figure 1 This is a flowchart of the method of the present invention;

[0037] Figure 2 This is a flowchart of the rough tool setting method in an embodiment of the present invention;

[0038] Figure 3 This is a flowchart of the precise tool setting method in an embodiment of the present invention;

[0039] Figure 4 This is a schematic diagram of the current of the grinding motor in an embodiment of the present invention;

[0040] Figure 5 This is a partial schematic diagram of the current of the grinding motor in an embodiment of the present invention. Detailed Implementation

[0041] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0042] Example 1

[0043] Reference Figure 1 As shown, this invention relates to a rapid tool setting method for automatic grinding of rail welds, comprising:

[0044] Before grinding, with the grinding wheel of the grinding equipment not rotating, feed the grinding wheel toward the rail and record the position of the feed motor of the grinding equipment and the current data of the feed motor in real time. Based on the recorded data, find the position of the feed motor when the current of the feed motor exceeds the set threshold, and use this position as a reference to determine the rough grinding reference, so as to achieve rough tool setting of the grinding reference.

[0045] During the grinding process, with the grinding wheel rotating, the position of the rough setting is used as the starting point for the precise setting. The grinding wheel is fed toward the rail, and the contact between the grinding wheel and the rail is judged in real time by analyzing the current change of the grinding motor, so as to achieve precise setting of the grinding reference.

[0046] The grinding motor is used to drive the grinding wheel to rotate, and the feed motor is used to drive the grinding wheel to advance axially.

[0047] It should be noted that the final step in this embodiment is to grind the rail weld, but during the rapid tool setting process, the rail is subjected to rapid tool setting.

[0048] This invention constructs an automatic tool setting method based on coarse tool setting and precise tool setting, which can transform the manual tool setting process into an automatic tool setting process, making rail weld grinding more precise and effective, and improving the efficiency of rail weld grinding.

[0049] The following is a detailed description of this embodiment:

[0050] The grinding equipment for rail welds in this embodiment mainly includes: a grinding module, a feed module, a reciprocating module, a tilting module, and a control module. The grinding module consists of a grinding motor and a grinding wheel, with the grinding motor driving the grinding wheel to rotate and provide cutting power. The feed module consists of a feed motor, a transmission mechanism (lead screw, nut, etc.), and a feed shaft (the feed motor controls the feed shaft through the transmission mechanism to achieve axial displacement), used to realize the axial feed motion of the grinding wheel. The reciprocating module mainly consists of a reciprocating motor, a guide rod, and a synchronous belt, used to realize the reciprocating motion of the grinding wheel along the rail direction. The tilting module mainly consists of a tilting motor and a reducer, used to realize the tilting angle of the grinding wheel to complete grinding at different angles. Since grinding equipment is existing technology and its structure is basically similar, the details of the grinding equipment will not be described in detail in this embodiment.

[0051] The tool setting method in this embodiment requires extracting features from the current of the feed motor and the grinding motor to determine the contact condition between the grinding wheel and the rail. Therefore, the control module must be able to read the current from the driver of the aforementioned motors, or the control system must have the ability to collect motor current. To achieve higher precision tool setting, a higher sampling frequency is better.

[0052] (I) Rough setting process

[0053] Please see Figure 1 This is the rough tool setting process in this embodiment. This process is used before grinding to achieve rapid coarse calibration of the grinding reference. This process simulates the operation of existing weld grinding machines, where the grinding wheel is not rotating, and the machine is manually fed rapidly. The contact between the grinding wheel and the rail is judged by touch, thereby achieving coarse calibration of the grinding reference. Specifically, it includes the following steps:

[0054] S11: Before rough setting, check and ensure the grinding motor is stopped, and the grinding wheel is directly above the rail (i.e., directly above the contact surface between the train wheel and the rail), ensuring the grinding wheel and rail are not in contact. In this embodiment, the grinding wheel is in the zero position (i.e., the feed axis is in the zero position). This step is to ensure the grinding wheel is disengaged from the rail so that it can feed downwards. In short, it checks that the grinding wheel and rail are not in contact.

[0055] S12: Set the first target speed of the feed axis to a range of 30-60 mm / s, preferably 50 mm / s in this embodiment. The target position is the maximum positive position (positive direction is the direction close to the rail). The maximum positive position is the position where the feed axis can move as far as possible (soft limit) directly below the rail. This step is to ensure that the grinding wheel contacts the rail when the feed axis goes down.

[0056] S13: When the feed axis moves axially directly below the rail, the data recording timer is activated simultaneously to record the position and current of the feed motor. The faster the timer frequency, the better; ideally, it should not be lower than 500Hz. (During the feed axis's movement of the grinding wheel, the grinding equipment will be lifted when the grinding wheel hits the rail).

[0057] S14: After determining that the feed axis has reached the target position, stop data recording and use a low-pass filtering algorithm to extract data below 10Hz (i.e., low-frequency current data) from the recorded feed motor current. Since there are a large number of high-frequency components in the feed motor current, and the collision process is in the low-frequency part of the current parameters, data below 10Hz is extracted. In this embodiment, 10Hz is experimental data, and in other embodiments, it can be set according to the actual situation.

[0058] S15: From the extracted low-frequency (below 10Hz) current data, find the feature where the current exceeds the set threshold. This can be understood as the current jump feature (i.e., the performance of the collision between the grinding wheel and the rail in the current change. If it cannot be found, it means that the grinding wheel did not collide with the rail, the grinding wheel is severely worn, or the grinding equipment is abnormal). Find the corresponding position where the collision occurred in the recorded feed motor (or feed shaft) position data and record it as X_0.

[0059] S16: Offset 5mm away from the rail from X_0 to obtain X_0-5. Move the feed motor (feed axis of the feed motor) to X_0-5 to complete the rough setting of the grinding reference. The offset distance is mainly affected by the data recording refresh frequency and the gap of the grinding equipment, and can be adjusted according to actual tests.

[0060] (II) Precise Tool Setting Procedure

[0061] Please see Figure 2 This describes the precise tool setting process in this embodiment. This process simulates the manual grinding process, where the grinding reference is corrected by visually observing changes in sparks. The method primarily involves extracting low-frequency components characterizing the grinding wheel contact condition (such as...) from the current of the grinding motor in real time during the low-speed feed of the feed axis. Figure 3 , Figure 4 As shown in the figure, the feed axis movement is stopped when the extracted data exceeds a certain percentage C% (selectable as 15-20%) of the grinding wheel idling current, by comparing it with the reference current (i.e., the grinding wheel idling current). This achieves precise correction of the grinding reference. Since the grinding motor and the grinding wheel are directly connected or driven synchronously in a single stage, the nonlinear influence of friction during the transmission process on the motor current can be ignored. Therefore, in this embodiment, judging the grinding wheel contact condition based on the grinding motor spindle current is effective.

[0062] The specific process is as follows:

[0063] S21: Based on the feed axis at the rough setting position X_0-5, set the second target speed of the feed axis to 2-3 mm / s. In this embodiment, it is preferably 2 mm / s. The target position is the maximum positive position. At the same time, start the acquisition of the grinding motor spindle current and extract data below 10Hz in real time.

[0064] S22: The grinding motor starts and waits for it to reach the target speed. The grinding motor speed reaches the cutting speed, which can be selected as 3600-4000 rpm.

[0065] S23: The feed axis moves axially according to the set parameters (i.e., the parameters set in step S21).

[0066] S24: Determine if the real-time current of the grinding motor exceeds 20% of the idle current. If it does, the feed axis stops axial movement to complete precise wheel correction and achieve accurate tool setting for the grinding reference. If the grinding motor spindle current does not exceed 20% of the idle current even when the feed axis reaches its maximum forward position, it indicates an abnormality in the grinding equipment. The idle current is the current when the grinding wheel is idling and not cutting. The 20% threshold in this embodiment is experimental data; this threshold needs to be obtained through testing based on the selected motor and specific grinding equipment.

[0067] In summary, during actual operation, rough setting is performed once before grinding to find a rough reference point for grinding. Then, using the found rough reference point as the starting point for precise setting, precise setting is completed. After grinding at that angle, the grinding wheel is retracted to the rough reference point, and then the grinding wheel is adjusted to the next target angle. Precise setting is then performed at the next target angle, and the above process is repeated until the grinding of the entire rail head is completed.

[0068] Example 2

[0069] This embodiment provides a rapid tool setting system for automatic grinding of rail welds, including:

[0070] The coarse tool setting module is used to feed the grinding wheel toward the rail before grinding, without rotating the grinding wheel of the grinding equipment. It records the position of the feed motor of the grinding equipment and the current data of the feed motor in real time during the feeding process. Based on the recorded data, it finds the position of the feed motor when the current of the feed motor exceeds the set threshold, and uses this position as a reference to determine the coarse grinding reference, thus realizing the coarse tool setting of the grinding reference.

[0071] The precision tool setting module is used during the grinding process. With the coarse tool setting position as the starting point, the grinding wheel is fed towards the rail while the grinding wheel is rotating. The module also analyzes the current changes of the grinding motor in real time to determine the contact between the grinding wheel and the rail, thereby achieving precise tool setting of the grinding reference.

[0072] The grinding motor is used to drive the grinding wheel to rotate, and the feed motor is used to drive the grinding wheel to feed axially.

[0073] Example 3

[0074] This embodiment provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the steps of the rapid tool setting method for automatic grinding of rail welds described in Embodiment 1.

[0075] Example 4

[0076] This embodiment provides a computer-readable storage medium storing a computer program thereon. When the computer program is executed by a processor, it implements the steps of the rapid tool setting method for automatic grinding of rail welds as described in Embodiment 1.

[0077] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code. The solutions in the embodiments of this application can be implemented in various computer languages, such as the object-oriented programming language Java and the interpreted scripting language JavaScript.

[0078] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0079] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0080] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0081] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0082] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A rapid tool setting method for automatic grinding of rail welds, characterized in that: include: Before grinding, with the grinding wheel of the grinding equipment not rotating, feed the grinding wheel toward the guide rail and record the position of the feed motor of the grinding equipment and the current data of the feed motor in real time during the feeding process. Based on the recorded data, find the position of the feed motor when the current of the feed motor exceeds the set threshold, and use this position as a reference to determine the rough grinding reference, so as to achieve rough tool setting of the grinding reference. The method includes: S11: Check and ensure that the grinding motor is stopped and the grinding wheel is directly above the rail; S12: Set the first target speed for the feed motor to drive the feed axis to move axially. The target position is the maximum positive position, where the maximum positive position is the position where the feed axis moves axially downwards towards the rail to the furthest point. S13: When the feed axis moves axially downwards towards the rail, a timer for recording data is simultaneously activated to record the position of the feed motor and the current of the feed motor. S14: After the feed axis moves axially to the target position, stop recording data and extract low-frequency current data below AHz from the recorded feed motor current; S15: Find the feature of current exceeding the set threshold from the low-frequency current data below AHz, and find the corresponding position of collision between the grinding wheel and the rail in the recorded feed motor position data, and record it as X_0. The feature of current exceeding the set threshold is the current change generated when the grinding wheel collides with the rail. S16: Offset X_0 away from the rail by a millimeter to obtain X_0-a. Move the feed axis of the feed motor to X_0-a to complete the rough setting of the grinding reference. During the grinding process, with the grinding wheel rotating, the position of the rough setting is used as the starting point for the precise setting. The grinding wheel is fed toward the rail, and the contact between the grinding wheel and the rail is judged in real time by analyzing the current change of the grinding motor, so as to achieve precise setting of the grinding reference. The grinding motor is used to drive the grinding wheel to rotate, and the feed motor is used to drive the grinding wheel to feed axially.

2. The rapid tool setting method for automatic grinding of rail welds according to claim 1, characterized in that: The method for extracting current data below AHz from the recorded feed motor current includes: extracting current data below 10Hz from the recorded feed motor current using a low-pass filtering algorithm.

3. The rapid tool setting method for automatic grinding of rail welds according to claim 1, characterized in that: The value of the first target velocity ranges from 30 to 60 mm / s.

4. The rapid tool setting method for automatic grinding of rail welds according to claim 1, characterized in that: The timing frequency of the timer is greater than or equal to 500Hz.

5. The rapid tool setting method for automatic grinding of rail welds according to claim 1, characterized in that: During the grinding process, with the grinding wheel rotating, the position of the rough setting is used as the starting point for the precise setting. The grinding wheel is fed towards the rail, and the contact between the grinding wheel and the rail is determined in real time by analyzing the current changes of the grinding motor, thus achieving precise setting of the grinding reference. The method includes: S21: Using the feed motor at X_0-a as the precise tool setting starting point, set the second target speed for the feed motor to drive the feed axis to move axially. The target position is the maximum positive position. At the same time, start the acquisition of the spindle current of the grinding motor and extract data below BHz in real time. S22: Start the grinding motor and wait for it to reach the target speed; S23: When the grinding motor reaches the target speed, the feed axis moves axially; S24: Determine whether the data below BHz of the grinding motor spindle current exceeds C% of the idle current. If it does, the feed axis stops axial movement, completes the precise correction of the grinding wheel, and achieves precise tool setting of the grinding reference. If the grinding motor spindle current exceeds the idle current even when the feed axis moves to the maximum positive position, it indicates that the grinding equipment is abnormal. The idle current is the current when the grinding wheel is idling and not cutting. The value range of C% is 15-20%.

6. The rapid tool setting method for automatic grinding of rail welds according to claim 5, characterized in that: The second target velocity ranges from 2 to 3 mm / s.

7. A rapid tool setting system for automatic grinding of rail welds, used to implement the rapid tool setting method for automatic grinding of rail welds as described in any one of claims 1 to 6, characterized in that: include: The coarse tool setting module is used to feed the grinding wheel toward the rail before grinding, without rotating the grinding wheel of the grinding equipment. It records the position of the feed motor of the grinding equipment and the current data of the feed motor in real time during the feeding process. Based on the recorded data, it finds the position of the feed motor when the current of the feed motor exceeds the set threshold, and uses this position as a reference to determine the coarse grinding reference, thus realizing the coarse tool setting of the grinding reference. The precision tool setting module is used during the grinding process. With the coarse tool setting position as the starting point for precision tool setting while the grinding wheel is rotating, the grinding wheel is fed towards the rail. The module also analyzes the current changes of the grinding motor in real time to determine the contact between the grinding wheel and the rail, thereby achieving precise tool setting of the grinding reference. The grinding motor is used to drive the grinding wheel to rotate, and the feed motor is used to drive the grinding wheel to feed axially.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, it implements the steps of the rapid tool setting method for automatic grinding of rail welds as described in any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by the processor, it implements the steps of the rapid tool setting method for automatic grinding of rail welds as described in any one of claims 1 to 6.

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