A method and system for continuous laser cutting of a band saw blade

Abstract

The application provides a continuous laser cutting control method and system for a band saw blade, comprising the following steps: setting an initial cutting speed and an initial feeding speed matched with the initial cutting speed; acquiring a detection length of the band, a feeding length, a feeding speed, a cutting speed of the feeding servo motor, and a moving distance of a laser cutting head in a cutting axis Y direction; comparing the detection length with the feeding length, and adjusting a motion state of the feeding servo motor according to a comparison result; and adjusting the feeding speed according to the moving distance, so that the adjusted feeding speed is matched with the cutting speed. The application can realize automatic feeding and full closed-loop control, avoid deviation between a servo motor feeding length and an actual feeding length, improve feeding precision, ensure that the feeding speed and the cutting speed are matched, realize accurate cutting, and improve product quality and performance.

Description

Technical Field

[0001] This invention relates to the field of band saw blade processing, and specifically to a method and system for controlling continuous laser cutting of band saw blades. Background Technology

[0002] The raw material for band saw blades is steel strips of the required width. To make the saw blades, teeth need to be cut into the steel strips. Depending on the tooth shape requirements, different tooling molds need to be made to meet different applications and customer requirements.

[0003] Traditional band saw blade tooth processing involves milling the band saw blade with a milling machine according to the processing technology. However, this processing method is slow and inefficient. With the development of industry and the continuous increase in demand for band saw blades, band saw blades have quickly become a fast-moving consumable. This inevitably leads to a shortage of band saw blades. In order to improve production efficiency, this has led to the demand for laser cutting. Laser cutting has the advantages of fast processing speed, high processing efficiency, and low energy consumption.

[0004] Chinese invention patent application CN201620262002.2 discloses a laser cutting machine for band saw blades. The processing method involves feeding a strip of material, then starting laser cutting, and repeating this process. Compared to milling, this solution significantly improves the processing efficiency of the band saw blades, but it still struggles to meet supply demands. Chinese invention patent application CN202110490983.1 discloses a compact laser tooth-cutting device for band saw blades. This device uses a feeding mechanism that feeds material while the cutting machine cuts simultaneously. This method effectively improves processing efficiency. However, the device uses a feeding motor to drive rollers to clamp the saw blade. The friction between the rollers and the saw blade causes the blade to move horizontally, which can sometimes lead to slippage or overfeeding. This simultaneous feeding and cutting method affects cutting accuracy in actual production, resulting in significant deviations in the tooth pitch of the processed saw blades.

[0005] In existing technologies, when the upper and lower feeding rollers rotate, the feeding length of the servo motor may deviate from the actual feeding length, causing the tooth pitch of the band saw blades cut into the same group to change, which in turn leads to deviations in the tooth splitting amount during tooth splitting, thus affecting product quality and performance. Therefore, there is an urgent need for a feeding step distance detection closed-loop control system that can achieve precise control of automatic feeding and step distance monitoring closed loop, so that the feeding accuracy can meet the requirements of process production.

[0006] Chinese invention patent application CN202210198157.4 discloses an automatic feeding and step distance detection closed-loop control device for strip in a fine blanking machine. It conveys the strip forward via upper and lower clamping rollers, which drive the detection roller to rotate. The rotation value is then directly converted into the feeding length. If the feeding by the servo motor is complete, and the feeding length monitored by the detection roller does not match or has a large error with the feeding step distance value of the servo motor, the control equipment pauses operation and issues an alarm. However, this device relies on the detection roller to monitor the feeding step distance and does not provide corresponding automatic control for different working conditions such as product slippage or excessive feeding. The automated step distance adjustment measures do not provide complete control logic. In addition, laser cutting is a continuous operation mode, where the feeding and cutting of the band saw blade are carried out simultaneously. Therefore, in the field of laser cutting, the feeding speed and cutting speed need to be precisely matched. Otherwise, the process will be intermittent, resulting in a large tooth pitch error and causing product quality defects. However, this device is mainly used in large stamping equipment, which adopts an intermittent operation mode. Each stamping process requires a stop and adjustment, and it cannot achieve matching of feeding speed and cutting speed, making it difficult to meet the closed-loop control requirements of feeding step distance for band saw blade laser cutting. Summary of the Invention

[0007] The purpose of this invention is to address the shortcomings of the prior art by providing a continuous laser cutting control method and system for band saw blades, enabling the feeding mechanism to accurately feed materials in accordance with the laser cutting speed, thereby achieving precise cutting.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0009] A method for controlling continuous laser cutting of band saw blades includes the following steps:

[0010] S1. Set the initial cutting speed and the initial feeding speed that matches the initial cutting speed. The laser cutting controller controls the feeding servo motor to rotate, which drives the feeding mechanism to rotate and transport the strip.

[0011] S2 acquires the detection length of the strip, the feeding length of the feeding servo motor, the feeding speed, the cutting speed, and the moving distance of the laser cutting head in the cutting axis Y-axis direction; wherein, the detection length is the actual feeding length of the strip, and the traveling direction of the strip is the cutting axis Y-axis;

[0012] S3. Compare the detected length with the feeding length, and adjust the motion state of the feeding servo motor according to the comparison result; adjust the feeding speed according to the moving distance so that the adjusted feeding speed matches the cutting speed.

[0013] This invention monitors the servo motor's feeding length and the actual feeding length in real time. It adjusts the feeding speed promptly to address potential slippage or overfeeding during the feeding process, achieving automatic feeding and fully closed-loop control. This improves feeding accuracy and meets the precision requirements of laser cutting of band saw blades. Simultaneously, by monitoring the offset of the laser cutting head along the Y-axis, the feeding speed is adjusted in a timely manner to match the cutting speed. This prevents intermittent cutting and avoids variations in the tooth pitch within the same group of band saw blades, which could lead to deviations in tooth division during tooth separation, thus achieving precise cutting.

[0014] Furthermore, in step S3, the specific implementation process of adjusting the motion state of the feeding servo motor includes:

[0015] If the detection length is less than the feeding length, control the feeding servo motor to accelerate until the detection length is equal to the feeding length; if the detection length is greater than the feeding length, control the feeding servo motor to stop rotating; if the detection length is equal to the feeding length, control the feeding servo motor to operate normally.

[0016] Furthermore, in step S3, the specific implementation process of adjusting the feeding speed includes:

[0017] When the laser cutting head deviates from the cutting zero point and moves in the positive direction of the cutting axis Y, the feeding speed is reduced until the speed of the laser cutting head in the cutting axis Y direction matches the feeding speed.

[0018] When the laser cutting head deviates from the cutting zero point and moves in the negative direction of the cutting axis Y, the feeding speed is increased until the speed of the laser cutting head in the cutting axis Y direction matches the feeding speed.

[0019] When the laser cutting head is always moving at the cutting zero point in the Y-axis direction of the cutting axis, the feeding speed remains constant;

[0020] The direction of travel of the strip is defined as the positive direction of the cutting axis Y.

[0021] Furthermore, in step S3, the specific implementation process of adjusting the motion state of the feeding servo motor also includes:

[0022] If the detection length is less than the feeding length and Δθ>ε, then the feeding servo motor is controlled to accelerate until the detection length equals the feeding length or Δθ<ε; if the detection length is greater than the feeding length and Δθ>ε, then the feeding servo motor is controlled to stop rotating; if the detection length equals the feeding length or Δθ<ε, then the feeding servo motor is controlled to operate normally.

[0023] Wherein, Δθ is the absolute value of the difference between the detection length and the feeding length, and ε is the set allowable error value.

[0024] Furthermore, in step S3, the specific implementation process of adjusting the feeding speed also includes:

[0025] When the laser cutting head deviates from the cutting zero point and moves in the positive direction of the cutting axis Y, and At the same time, reduce the feeding speed until the speed of the laser cutting head in the cutting axis Y-axis direction matches the feeding speed;

[0026] When the laser cutting head deviates from the cutting zero point and moves in the negative direction of the cutting axis Y, and At the same time, increase the feeding speed until the speed of the laser cutting head in the Y-axis direction of the cutting axis matches the feeding speed;

[0027] When the laser cutting head always moves at the zero point in the cutting axis Y-axis direction, and At that time, the feeding speed remains unchanged;

[0028] Wherein, ΔL is the distance the laser cutting head moves in the Y-axis direction of the cutting axis. This is the set allowable error value.

[0029] Furthermore, the laser cutting head and the cutting axis Y-axis have the following relationship:

[0030] The present invention also provides a continuous laser cutting control system for band saw blades, including a laser cutting controller, a feeding servo system, a feeding mechanism, and a detection device;

[0031] The feeding mechanism is used to drive the strip to move;

[0032] The feeding servo system includes a feeding servo motor and a feeding servo system encoder mounted on the feeding servo motor;

[0033] The detection device is used to detect the actual feeding length of the strip and output a detection signal;

[0034] The laser cutting controller includes a detection unit, a comparison unit, a first adjustment unit, and a second adjustment unit. The detection unit receives signals from the encoder of the feeding servo system and signals from the detection device, and converts the signals into the feeding length, feeding speed, cutting speed, moving distance of the laser cutting head in the Y-axis direction of the cutting axis, and detection length of the feeding servo motor, wherein the Y-axis is the direction of travel of the strip. The comparison unit compares the detection length with the feeding length and outputs the comparison result. The first adjustment unit adjusts the motion state of the feeding servo motor according to the comparison result. The second adjustment unit adjusts the feeding speed according to the moving distance.

[0035] Furthermore, the specific implementation process of the first adjustment unit adjusting the motion state of the feeding servo motor includes:

[0036] If the detection length is less than the feeding length, control the feeding servo motor to accelerate until the detection length is equal to the feeding length; if the detection length is greater than the feeding length, control the feeding servo motor to stop rotating; if the detection length is equal to the feeding length, control the feeding servo motor to operate normally.

[0037] Alternatively: If the detection length is less than the feeding length and Δθ > ε, then control the feeding servo motor to accelerate until the detection length equals the feeding length or Δθ < ε; if the detection length is greater than the feeding length and Δθ > ε, then control the feeding servo motor to stop rotating; if the detection length equals the feeding length or Δθ < ε, then control the feeding servo motor to operate normally; where Δθ is the absolute value of the difference between the detection length and the feeding length, and ε is the set error allowable value.

[0038] Furthermore, the specific implementation process of the second adjustment unit adjusting the feeding speed includes:

[0039] When the laser cutting head deviates from the cutting zero point and moves in the positive direction of the cutting axis Y-axis, the feeding speed is reduced until the speed of the laser cutting head in the cutting axis Y-axis direction matches the feeding speed; when the laser cutting head deviates from the cutting zero point and moves in the negative direction of the cutting axis Y-axis, the feeding speed is increased until the speed of the laser cutting head in the cutting axis Y-axis direction matches the feeding speed; when the laser cutting head is always moving at the cutting zero point in the cutting axis Y-axis direction, the feeding speed remains unchanged; wherein, the direction of travel of the strip is defined as the positive direction of the cutting axis Y-axis.

[0040] Or: When the laser cutting head deviates from the cutting zero point and moves in the positive direction of the cutting axis Y-axis, and When the laser cutting head deviates from the cutting zero point and moves in the negative direction of the cutting axis Y, the feeding speed is reduced until the speed of the laser cutting head in the cutting axis Y direction matches the feeding speed; when the laser cutting head deviates from the cutting zero point and moves in the negative direction of the cutting axis Y, and At this point, increase the feeding speed until the speed of the laser cutting head in the Y-axis direction matches the feeding speed; when the laser cutting head is always moving at the cutting zero point in the Y-axis direction, and At this time, the feeding speed remains constant; where ΔL is the distance the laser cutting head moves in the Y-axis direction of the cutting axis. This is the set allowable error value.

[0041] Furthermore, the detection device includes a detection wheel and a coaxial encoder mounted on the detection wheel, the coaxial encoder being connected to the laser cutting controller.

[0042] Compared with existing technologies, the beneficial effects of this invention are as follows: This invention can realize automatic feeding and fully closed-loop control of feeding step distance. When there is a deviation between the servo motor feeding length and the actual feeding length, corresponding control strategies are given for different working conditions, adjusting the feeding servo motor and mechanism actions to achieve precise control, improve feeding accuracy, meet the precision requirements of laser cutting of saw blades, and has strong industrial applicability. At the same time, it prevents the situation of stopping and starting during the cutting process, ensuring that the laser cutting head is relatively stationary relative to the strip during the trajectory processing and cutting process, meeting the requirement of precise matching between feeding speed and cutting speed, avoiding changes in the tooth pitch of the same group of band saw blades after cutting, which leads to the phenomenon of tooth deviation when dividing the teeth, achieving precise cutting, and improving product quality and performance. Attached Figure Description

[0043] Figure 1 This is a partial structural schematic diagram of the band saw blade continuous laser cutting control system according to an embodiment of the present invention;

[0044] Figure 2 This is a flowchart illustrating the feeding control principle of the band saw blade continuous laser cutting control system according to an embodiment of the present invention.

[0045] Figure 3 This is a flowchart illustrating the cutting control principle of the band saw blade continuous laser cutting control system according to an embodiment of the present invention.

[0046] Figure 4 This is a schematic diagram of the feeding mechanism and detection device of the band saw blade continuous laser cutting control system according to an embodiment of the present invention. Detailed Implementation

[0047] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0048] like Figures 2-3 As shown, the present invention provides a method for controlling continuous laser cutting of band saw blades, comprising the following steps:

[0049] S1. Set the initial cutting speed and the initial feeding speed that matches the initial cutting speed to ensure that the cutting head is relatively stationary relative to the strip during the trajectory processing and cutting process. At this time, the laser cutting controller 11 controls the feeding servo motor 12 to rotate, which drives the feeding mechanism 13 to rotate to transport the strip 1.

[0050] like Figure 1 and Figure 4 As shown, during normal processing, the laser cutting controller 11 issues a command to make the feeding servo motor 12 rotate. The feeding servo motor 12 drives the lower feeding roller 13b to rotate through the reducer 12b. The upper feeding roller 13a and the lower feeding roller 13b drive the strip 1 forward by rotating at the same speed and in opposite directions.

[0051] S2. Obtain the detection length of strip 1, the feeding length of feeding servo motor 12, the feeding speed, the cutting speed, and the moving distance of the laser cutting head in the cutting axis Y-axis direction; wherein, the detection length is the actual feeding length of the strip, and the traveling direction of strip 1 is the cutting axis Y-axis.

[0052] like Figure 2 (S201) and Figure 4 As shown, during normal processing, the feeding servo motor 12 rotates, and the encoder 12a of the feeding servo system mounted on the feeding servo motor 12 outputs a first pulse signal to the laser cutting controller 11; at this time, the strip 1 drives the detection wheel 14a to rotate, and the coaxial encoder 14b mounted on the detection wheel 14a sends a second pulse signal to the laser cutting controller 11. The laser cutting controller 11 receives the first pulse signal and the second pulse signal, and converts the first pulse signal into the feeding length, feeding speed, cutting speed of the feeding servo motor, and the movement distance of the laser cutting head in the Y-axis direction of the cutting axis, such as... Figure 3 As shown in (S301), the second pulse signal is converted into the actual feeding length of the strip, i.e., the detection length.

[0053] Specifically, pulse equivalent:

[0054] Workbench travel distance: M = ΔM × P;

[0055] The operating speed of the servo motor:

[0056] Where ΔM is the pulse equivalent, where one pulse input causes the worktable to move a distance; M is the worktable movement distance; L is the pitch of the ball screw; E is the encoder resolution, i.e., the number of pulses emitted by the motor in one revolution; R is the speed ratio of the reducer; D is the electronic gear ratio; F is the frequency of the command pulse; P is the number of pulses output by the PLC; and N is the speed of the servo motor.

[0057] S3. The laser cutting controller 11 compares the detected length with the feeding length. Based on the comparison result, it adjusts the motion state of the feeding servo motor 12 to achieve precise control. It also adjusts the feeding speed according to the moving distance of the laser cutting head in the Y-axis direction of the cutting axis, so that the adjusted feeding speed matches the cutting speed and achieves precise cutting.

[0058] like Figure 2 As shown, after processing begins, in this embodiment, the laser cutting system controller 11 receives the signals output by the encoder 12a of the feeding servo system and the signals output by the detection device 14, and then... Figure 2 (S202) shows that there are three possible scenarios at this point:

[0059] 1) The detection length is less than the feeding length, and the error is greater than the allowable value ε;

[0060] 2) The detection length is greater than the feeding length, and the error is greater than the allowable value ε;

[0061] 3) The detection length is equal to the feeding length, or the error is less than the allowable value ε.

[0062] Depend on Figure 2 (S203) It is known that when the detection length is less than the feeding length and the error Δθ is greater than the allowable error value ε, the feeding mechanism 13 slips. The laser cutting controller 11 continues to send a certain amount of pulses to the feeding servo system to drive the feeding servo motor 12 to accelerate until the detection length and the feeding length are equal or the error Δθ is less than the allowable error value ε. The laser cutting system controller 11 continues to receive the signals output by the encoder 12a of the feeding servo system and the detection device 14.

[0063] Depend on Figure 2 (S204) It is known that when the detection length is greater than the feeding length and the error Δθ is greater than the allowable error value ε, the laser cutting system controller 11 stops sending pulse signals to the feeding servo system, controls the feeding servo motor 12 to stop moving, and at the same time the laser cutting system controller 11 issues an alarm reminder message.

[0064] Depend on Figure 2(S205) It can be seen that when the detection length is equal to the feeding length, or the error Δθ is less than the allowable error value ε, the laser cutting system controller 11 controls the servo motor 12 to continue running according to the normal instructions, and the laser cutting system controller 11 continues to receive the signals output by the feeding servo system encoder 12a and the detection device 14.

[0065] The error Δθ mentioned above refers to the absolute value of the difference between the detection length and the feeding length.

[0066] To ensure the processing accuracy of the laser cutting machine, the feeding speed of strip 1 and the cutting speed of the laser cutting head must be matched. If they are not matched, the coil processing will result in intermittent movement and stopping, which can easily lead to cutting errors. Therefore, during coil processing, it is necessary to ensure both the feeding accuracy and that the laser cutting head remains relatively stationary relative to strip 1 during the trajectory processing and cutting process. That is, from the perspective of strip 1, only strip 1 is moving while normal cutting is taking place above it.

[0067] Specifically, in this embodiment, the direction of travel of the strip 1 is taken as the positive direction of the cutting axis Y-axis.

[0068] Due to the possibility of unexpected situations during the cutting process, by Figure 3 (S302) As can be seen, there are three possible scenarios between the laser cutting head and the cutting axis Y-axis. Based on these three scenarios, the specific adjustment methods are as follows:

[0069] 1) such as Figure 3 As shown in (S303), when the laser cutting head deviates from the cutting zero point and moves in the positive direction of the cutting axis Y, and the moving distance ΔL is greater than the allowable error value... At this time, the cutting speed is less than the feeding speed. The laser cutting controller 11 controls the feeding servo motor 12 to decelerate and reduce the feeding speed until the speed of the laser cutting head in the Y-axis direction of the cutting axis matches the feeding speed.

[0070] 2) such as Figure 3 As shown in (S304), when the laser cutting head deviates from the cutting zero point and moves in the negative direction of the cutting axis Y-axis, and the moving distance ΔL is greater than the allowable error value... At this time, the cutting speed is greater than the feeding speed. The laser cutting controller 11 controls the feeding servo motor 12 to accelerate and increase the feeding speed until the speed of the laser cutting head in the Y-axis direction of the cutting axis matches the feeding speed.

[0071] 3) such as Figure 3 As shown in (S305), when the laser cutting head always moves near the cutting zero point in the Y-axis direction of the cutting axis, and the moving distance ΔL is less than the allowable error value. At this time, the cutting speed matches the feeding speed, and the laser cutting controller 11 controls the feeding servo motor 12 to operate normally.

[0072] like Figure 1 and Figure 4 As shown, this embodiment also provides a continuous laser cutting control system for band saw blades, including a laser cutting controller 11, a feeding servo system, a feeding mechanism 13, a detection device 14, a laser cutting axis Y-axis, and a laser cutting head mounted on the laser cutting axis Y-axis.

[0073] The feeding mechanism 13 is used to drive the strip 1 to move. It includes a reducer 12b, a lower feeding roller 13b, and an upper feeding roller 13a that cooperates with the lower feeding roller 13b. The feeding servo motor 12 is connected in sequence to the reducer 12b and the lower feeding roller 13b. The feeding servo motor 12 drives the lower feeding roller 13b to rotate through the reducer 12b. The upper feeding roller 13a and the lower feeding roller 13b drive the strip 1 to move by having the same speed and opposite rotation directions.

[0074] The feeding servo system includes a feeding servo motor 12 and a feeding servo system encoder 12a mounted on the feeding servo motor. The feeding servo motor 12 is connected to the feeding mechanism. The feeding servo motor 12 is used to control the movement direction and feeding speed of the feeding mechanism 13. The feeding servo system encoder 12a is used to detect the feeding length of the feeding servo motor 12.

[0075] The laser cutting controller 11 includes a detection unit, a comparison unit, a first adjustment unit, and a second adjustment unit.

[0076] The detection unit is used to receive the first signal from the encoder 12a of the feeding servo system and the second signal from the detection device 14, and converts the first signal into the feeding length, feeding speed, cutting speed, and moving distance of the laser cutting head in the Y-axis direction of the feeding servo motor 12, and converts the second signal into the detection length of the strip 1.

[0077] The comparison unit is used to compare the detection length with the feeding length and output the comparison result.

[0078] The first adjustment unit is used to adjust the motion state of the feeding servo motor 12 based on the comparison results.

[0079] The second adjustment unit is used to adjust the feeding speed according to the moving distance of the laser cutting head in the Y-axis direction of the cutting axis.

[0080] The detection device 14 is used to detect the actual feeding length of the strip 1. It includes a detection wheel 14a and a coaxial encoder 14b mounted on the detection wheel. The coaxial encoder 14b is connected to the laser cutting controller 11.

[0081] The laser cutting head is connected to the laser cutting controller 11, and the cutting axis Y-axis is consistent with the travel direction of the strip 1.

[0082] Specifically, the process of adjusting the motion state of the feeding servo motor by the first adjustment unit includes:

[0083] If the detection length is less than the feeding length and Δθ > ε, the feeding servo motor is controlled to accelerate until the detection length equals the feeding length or Δθ < ε; if the detection length is greater than the feeding length and Δθ > ε, the feeding servo motor is controlled to stop rotating; if the detection length equals the feeding length or Δθ < ε, the feeding servo motor is controlled to operate normally.

[0084] Where Δθ is the absolute value of the difference between the detection length and the feeding length, and ε is the set allowable error value.

[0085] Specifically, the process of adjusting the feeding speed by the second adjustment unit includes:

[0086] When the laser cutting head deviates from the cutting zero point and moves in the positive direction of the cutting axis Y, and At this time, reduce the feeding speed until the speed of the laser cutting head in the Y-axis direction of the cutting axis matches the feeding speed;

[0087] When the laser cutting head deviates from the cutting zero point and moves in the negative direction of the cutting axis Y, and At this time, increase the feeding speed until the speed of the laser cutting head in the Y-axis direction of the cutting axis matches the feeding speed;

[0088] When the laser cutting head always moves at the zero point of the cutting axis in the Y-axis direction, and At that time, the feeding speed remains unchanged;

[0089] Where ΔL is the distance the laser cutting head moves in the Y-axis direction of the cutting axis. This is the set allowable error value.

[0090] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not limiting. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the scope of protection of the present invention.

[0091] 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.

[0092] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A method for controlling continuous laser cutting of band saw blades, characterized in that, Includes the following steps: S1. Set the initial cutting speed and the initial feeding speed that matches the initial cutting speed. The laser cutting controller controls the feeding servo motor to rotate, which drives the feeding mechanism to rotate and transport the strip. S2. Based on the first pulse signal output by the encoder of the feeding servo system installed on the feeding servo motor, the feeding length, feeding speed, cutting speed, and the moving distance of the laser cutting head in the cutting axis Y-axis direction of the feeding servo motor are calculated; and based on the second pulse signal sent by the coaxial encoder installed on the detection wheel driven by the strip, the detection length of the strip is calculated; wherein, the detection length is the actual feeding length of the strip, and the traveling direction of the strip is the cutting axis Y-axis; S3. Compare the detected length with the feeding length, and adjust the motion state of the feeding servo motor according to the comparison result; adjust the feeding speed according to the moving distance so that the adjusted feeding speed matches the cutting speed; wherein, the specific implementation process of adjusting the motion state of the feeding servo motor further includes: if the detected length is less than the feeding length and Δθ>ε, then it is determined that the feeding mechanism is slipping, and the feeding servo motor is controlled to accelerate until the detected length is equal to the feeding length or Δθ<ε; if the detected length is greater than the feeding length and Δθ>ε, then the feeding servo motor is controlled to stop rotating; if the detected length is equal to the feeding length or Δθ<ε, then the feeding servo motor is controlled to operate normally; wherein, Δθ is the absolute value of the difference between the detected length and the feeding length, and ε is the set error allowable value.

2. The method for controlling continuous laser cutting of band saw blades according to claim 1, characterized in that, In step S3, the specific implementation process of adjusting the feeding speed includes: when the laser cutting head deviates from the cutting zero point and moves in the positive direction of the cutting axis Y, the feeding speed is reduced until the speed of the laser cutting head in the cutting axis Y direction matches the feeding speed; When the laser cutting head deviates from the cutting zero point and moves in the negative direction of the cutting axis Y, the feeding speed is increased until the speed of the laser cutting head in the cutting axis Y direction matches the feeding speed. When the laser cutting head is always moving at the cutting zero point in the Y-axis direction of the cutting axis, the feeding speed remains constant; The direction of travel of the strip is defined as the positive direction of the cutting axis Y.

3. The continuous laser cutting control method for band saw blades according to claim 1, characterized in that, In step S3, the specific implementation process of adjusting the feeding speed also includes: when the laser cutting head deviates from the cutting zero point and moves in the positive direction of the cutting axis Y, and ΔL>η, the feeding speed is reduced until the speed of the laser cutting head in the cutting axis Y direction matches the feeding speed; When the laser cutting head deviates from the cutting zero point and moves in the negative direction of the cutting axis Y, and ΔL>η, the feeding speed is increased until the speed of the laser cutting head in the cutting axis Y direction matches the feeding speed. When the laser cutting head always moves at the zero point in the cutting axis Y-axis direction and ΔL < η, the feeding speed remains unchanged; where ΔL is the moving distance of the laser cutting head in the cutting axis Y-axis direction and η is the set error allowable value.

4. A continuous laser cutting control system for band saw blades, characterized in that, Includes laser cutting controller, feeding servo system, feeding mechanism, and detection device; The feeding mechanism is used to drive the strip to move; The feeding servo system includes a feeding servo motor and a feeding servo system encoder mounted on the feeding servo motor; the detection device is used to detect the actual feeding length of the strip and output a detection signal; the detection device includes a detection wheel driven to rotate by the strip and a coaxial encoder mounted on the detection wheel, the coaxial encoder being connected to the laser cutting controller; The laser cutting controller includes a detection unit, a comparison unit, a first adjustment unit, and a second adjustment unit. The detection unit receives a first pulse signal output by the encoder of the feeding servo system and a second pulse signal output by the coaxial encoder in the detection device. It converts the first pulse signal into the feeding length, feeding speed, cutting speed of the feeding servo motor, and the movement distance of the laser cutting head along the Y-axis of the cutting axis. It also converts the second pulse signal into the detection length, where the Y-axis of the cutting axis is the direction of the strip's travel. The comparison unit compares the detection length with the feeding length and outputs a comparison result. The first adjustment unit adjusts the motion state of the feeding servo motor based on the comparison result. The second adjustment unit adjusts the feeding speed based on the movement distance. The specific implementation process of the first adjustment unit adjusting the motion state of the feeding servo motor includes: if the detected length is less than the feeding length and Δθ>ε, then it is determined that the feeding mechanism is slipping, and the feeding servo motor is controlled to accelerate until the detected length is equal to the feeding length or Δθ<ε; if the detected length is greater than the feeding length and Δθ>ε, then the feeding servo motor is controlled to stop rotating; if the detected length is equal to the feeding length or Δθ<ε, then the feeding servo motor is controlled to operate normally. Wherein, Δθ is the absolute value of the difference between the detection length and the feeding length, and ε is the set allowable error value.

5. The band saw blade continuous laser cutting control system according to claim 4, characterized in that: The specific implementation process of the second adjustment unit adjusting the feeding speed includes: when the laser cutting head deviates from the cutting zero point and moves in the positive direction of the cutting axis Y, the feeding speed is reduced until the speed of the laser cutting head in the cutting axis Y direction matches the feeding speed; When the laser cutting head deviates from the cutting zero point and moves in the negative direction of the cutting axis Y, the feeding speed is increased until the speed of the laser cutting head in the cutting axis Y direction matches the feeding speed. When the laser cutting head is always moving at the cutting zero point in the Y-axis direction of the cutting axis, the feeding speed remains constant; Wherein, the direction of travel of the strip is taken as the positive direction of the cutting axis Y-axis; Alternatively: When the laser cutting head deviates from the cutting zero point and moves in the positive direction of the cutting axis Y, and ΔL>η, reduce the feeding speed until the speed of the laser cutting head in the cutting axis Y direction matches the feeding speed; When the laser cutting head deviates from the cutting zero point and moves in the negative direction of the cutting axis Y, and ΔL>η, the feeding speed is increased until the speed of the laser cutting head in the cutting axis Y direction matches the feeding speed. When the laser cutting head always moves at the zero point in the cutting axis Y-axis direction and ΔL < η, the feeding speed remains unchanged; where ΔL is the moving distance of the laser cutting head in the cutting axis Y-axis direction, η is the set error allowable value, and the traveling direction of the strip is the positive direction of the cutting axis Y-axis.

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