A multi-wire cutting machine wire bow height automatic adjustment control system and method

Abstract

The present invention relates to a multi-wire cutting machine wire bow height automatic adjustment control system and method, the system includes a multi-wire cutting machine, a feeding table, a left sensor, a right sensor and a controller; the feeding table is installed above the multi-wire cutting machine and directly faces the cutting part of the multi-wire cutting machine, and the left sensor and the right sensor are respectively installed on the left and right sides of the feeding table; the left sensor and the right sensor are both electrically connected to the input end of the controller, and the output end of the controller is electrically connected to the feeding table. The present invention uses two left and right sensors to detect the real-time wire bow height of the multi-wire cutting machine, and the controller adjusts the feeding speed of the feeding table through the real-time wire bow height detected by the left sensor or / and the right sensor to realize automatic adjustment and control of the wire bow height of the multi-wire cutting machine, which can reduce the cost of sample trial production, improve the consistency of mass production, reduce the cost of mass production consumables, reduce labor costs, avoid human errors, and improve production efficiency.

Description

Technical Field

[0001] The present invention relates to the field of multi-wire cutting machines, and in particular to a control system and method for automatically adjusting the height of a wire bow of a multi-wire cutting machine. Background Art

[0002] The adjustment of cutting parameters of multi-wire cutting machine directly affects whether it can efficiently cut out high-quality products. One of the core of cutting parameter control is the wire bow height during cutting. The expected wire bow height of materials with the same material and the same specification is basically determined. At present, the multi-wire cutting machine on the market controls the wire bow height by manual segmented cutting. However, due to the differences in hardness, shape, specification, etc. of the cutting materials, the existing scheme must adopt the following method when cutting a new specification of material. Figure 1 The process shown in the figure is used for cutting, which involves a complicated process of sample trial cutting, qualified detection and parameter exploration and adjustment, which will increase the cost of sample trial production and reduce production efficiency. Secondly, in the process of mass production, due to individual differences in materials of the same specifications and individual differences in consumables such as diamond cutting wires, the adjusted cutting parameters will sometimes cut too fast and sometimes cut too slowly and not cut through. Therefore, a set of fixed cutting parameters cannot be applied to all cutting environments. At present, the main method is to increase the redundancy of cutting parameters to eliminate the differences, such as increasing the supplementary cutting height, increasing the amount of new wires, etc. In summary, the above two major problems will lead to an increase in production costs and a decrease in efficiency. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a multi-wire cutting machine wire bow height automatic adjustment control system and method, which can reduce production losses, improve production efficiency and reduce production costs.

[0004] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a multi-wire cutting machine wire bow height automatic adjustment control system, comprising a multi-wire cutting machine, a feeding workbench, a left sensor, a right sensor and a controller; the feeding workbench is installed above the multi-wire cutting machine and faces the cutting part of the multi-wire cutting machine, the left sensor and the right sensor are respectively installed on the left and right sides of the feeding workbench and are used to detect the wire bow height of the cutting part; the left sensor and the right sensor are both electrically connected to the input end of the controller, and the output end of the controller is electrically connected to the feeding workbench.

[0005] The beneficial effect of the present invention is as follows: the present invention adopts two left and right sensors to detect the real-time wire bow height of the multi-wire cutting machine. When the multi-wire cutting machine rotates clockwise, the cutting fluid also flows and sputters clockwise, and the left sensor is enabled at this time. When the multi-wire cutting machine rotates counterclockwise, the cutting fluid also flows and sputters counterclockwise, and the right sensor is enabled at this time. This can avoid the cutting fluid from flowing and sputtering along the trend during the reciprocating operation of the multi-wire cutting machine, thereby affecting the detection accuracy of the sensor. The controller adjusts the feed speed of the feed workbench through the real-time wire bow height detected by the left sensor and / or the right sensor to realize automatic adjustment and control of the wire bow height of the multi-wire cutting machine. In this process, no sample trial production and no manual participation are required, thereby reducing the sample trial production cost, improving the consistency of mass production, reducing the cost of mass production consumables, reducing labor costs, avoiding human errors, and improving production efficiency.

[0006] Based on the above technical solution, the present invention can also be improved as follows.

[0007] Furthermore, the left sensor and the right sensor are both laser sensors.

[0008] Further, the multi-wire cutting machine includes a wire saw, a main shaft mechanism, a first winding mechanism and a second winding mechanism; the first winding mechanism and the second winding mechanism are respectively arranged on the left and right sides of the main shaft mechanism, the wire saw is arranged in the main shaft mechanism, and the two ends of the wire saw are respectively wound on the first winding mechanism and the second winding mechanism; the feeding workbench is located above the main shaft mechanism and directly faces the wire saw. Further, the main shaft mechanism includes a first main roller, a second main roller, a first main roller drive motor and a second main roller drive motor; the first main roller and the second main roller are arranged at intervals, and the wire saw is arranged between the first main roller and the second main roller; the first main roller drive motor is connected to the first main roller and is used to drive the first main roller to rotate forward or reverse, and the second main roller drive motor is connected to the second main roller and is used to drive the second main roller to rotate forward or reverse.

[0009] Furthermore, the first winding mechanism includes a winding roller, a wire arrangement mechanism, a tension buffer roller and a passive guide wheel; the linear saw is wound on the winding roller through the passive guide wheel, the tension buffer roller and the wire arrangement mechanism in sequence; the wire arrangement mechanism includes a wire arrangement roller and a wire arrangement guide rail, the wire arrangement roller is slidably installed on the wire arrangement guide rail, the linear saw is wound on the winding roller through the wire arrangement roller, and the linear saw from the wire arrangement roller to the winding roller is perpendicular to the winding roller; the second winding mechanism has the same structure as the first winding mechanism.

[0010] The beneficial effects of adopting the above further scheme are: the wire arrangement roller reciprocates on the wire arrangement guide rail so that the wire saw is always perpendicular to the winding roller, so as to prevent the wire saw from breaking due to lateral friction on the winding roller; the tension buffer roller makes the wire saw tensioned while having a certain buffering effect, so as to prevent the wire saw from breaking due to excessive tension.

[0011] Furthermore, the wire saw is specifically a diamond wire.

[0012] Based on the above-mentioned automatic adjustment control system for the wire bow height of a multi-wire cutting machine, the present invention also provides an automatic adjustment control method for the wire bow height of a multi-wire cutting machine.

[0013] A method for automatically adjusting and controlling the height of a wire bow of a multi-wire cutting machine is provided, which uses the above-mentioned automatic adjustment and control system for the height of a wire bow of a multi-wire cutting machine to automatically adjust and control the height of a wire bow of a multi-wire cutting machine, and comprises the following steps:

[0014] Determine whether the multi-wire cutting machine is running. If not, enable the left sensor and the right sensor at the same time. If yes, determine the running direction of the multi-wire cutting machine. If the multi-wire cutting machine runs clockwise, enable the left sensor. If the multi-wire cutting machine runs counterclockwise, enable the right sensor.

[0015] The controller adjusts the feed speed of the feed table according to the preset wire bow height and the real-time wire bow height detected by the enabled sensor to achieve automatic adjustment and control of the wire bow height of the multi-wire cutting machine.

[0016] The beneficial effect of the present invention is as follows: the present invention adopts two left and right sensors to detect the real-time wire bow height of the multi-wire cutting machine. When the multi-wire cutting machine rotates clockwise, the cutting fluid also flows and sputters clockwise, and the left sensor is enabled at this time. When the multi-wire cutting machine rotates counterclockwise, the cutting fluid also flows and sputters counterclockwise, and the right sensor is enabled at this time. This can avoid the cutting fluid from flowing and sputtering along the trend during the reciprocating operation of the multi-wire cutting machine, thereby affecting the detection accuracy of the sensor. The controller adjusts the feed speed of the feed workbench through the real-time wire bow height detected by the left sensor and / or the right sensor to realize automatic adjustment and control of the wire bow height of the multi-wire cutting machine. In this process, no sample trial production and no manual participation are required, thereby reducing the sample trial production cost, improving the consistency of mass production, reducing the cost of mass production consumables, reducing labor costs, avoiding human errors, and improving production efficiency.

[0017] Based on the above technical solution, the present invention can also be improved as follows.

[0018] Further, the controller uses the following formula to adjust the feed speed of the feed table: feed speed V1 of the feed table = preset feed speed V2 + feed speed adjustment value Delta_V;

[0019] Under the condition that only the left sensor or the right sensor is enabled, if the real-time wire bow height detected by the left sensor or the right sensor does not meet the preset wire bow height, the feed speed adjustment value Delta_V is calculated by the PID adjustment method;

[0020] When the left sensor and the right sensor are enabled at the same time, if the average value of the real-time wire bow height detected by the left sensor and the right sensor does not meet the preset wire bow height, the PID adjustment method is used to calculate the feed speed adjustment value Delta_V.

[0021] Further, the controller uses the following formula to adjust the feed speed of the feed table: feed speed V1 of the feed table = preset feed speed V2 ± feed speed adjustment value Delta_V, wherein the feed speed adjustment value Delta_V is used as a fixed value to adjust the feed speed V1 of the feed table;

[0022] When only the left sensor or the right sensor is enabled, the feed table feed speed V1 is not adjusted;

[0023] When both the left and right sensors are enabled,

[0024] When the average value of the real-time wire bow height detected by the left sensor and the right sensor is higher than the preset wire bow height, the feed speed V1 of the feed table is slowed down, and the feed speed V1 of the feed table = the preset feed speed V2 - the feed speed adjustment value Delta_V;

[0025] When the average value of the real-time wire bow height detected by the left sensor and the right sensor is lower than the preset wire bow height, the feed speed V1 of the feed table is increased, and the feed speed V1 of the feed table = the preset feed speed V2 + the feed speed adjustment value Delta_V;

[0026] When the average value of the real-time wire bow height detected by the left sensor and the right sensor meets the preset wire bow height, the feed speed V1 of the feed table is not adjusted.

[0027] Furthermore, under the condition that the left sensor and the right sensor are enabled at the same time, the following step is also included, in which the real-time line bow heights detected by the left sensor and the right sensor are compared to correct the sensor detection error.

[0028] The beneficial effect of adopting the above further scheme is: when the left sensor and the right sensor are enabled at the same time, it indicates that the multi-wire cutting machine is not running, that is, the roller shaft of the spindle mechanism of the multi-wire cutting machine reciprocates to a stop point (speed is zero), and the left and right sensor data are used for comparison and correction to eliminate the detection error caused by water flow during the rotation of the multi-wire cutting machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a flow chart of cutting by a multi-wire cutting machine in the prior art;

[0030] Figure 2 It is a structural schematic diagram of a multi-wire cutting machine wire bow height automatic adjustment control system of the present invention;

[0031] Figure 3 It is a structural schematic diagram of a multi-wire cutting machine in a multi-wire cutting machine wire bow height automatic adjustment control system of the present invention;

[0032] Figure 4 It is a flow chart of a method for automatically adjusting the height of a wire bow of a multi-wire cutting machine according to the present invention;

[0033] Figure 5 A first principle flow chart for adjusting the feed speed of the feed table;

[0034] Figure 6 The second principle flow chart for adjusting the feed speed of the feed table.

[0035] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0036] 1. Multi-wire cutting machine, 2. Feed workbench, 3. Left sensor, 4. Right sensor, 5. Material; 11. Wire saw, 12. Spindle mechanism, 13. First winding mechanism, 14. Second winding mechanism; 121. First main roller, 122. Second main roller; 131. Winding roller, 132. Wire arrangement mechanism, 133. Tension buffer roller, 134. Passive guide wheel; 1321. Wire arrangement roller, 1322. Wire arrangement guide rail. DETAILED DESCRIPTION

[0037] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0038] like Figure 2 and Figure 3 As shown, a multi-wire cutting machine wire bow height automatic adjustment control system includes a multi-wire cutting machine 1, a feeding workbench 2, a left sensor 3, a right sensor 4 and a controller; the feeding workbench 2 is installed above the multi-wire cutting machine 1 and faces the cutting part of the multi-wire cutting machine 1, the left sensor 3 and the right sensor 4 are respectively installed on the left and right sides of the feeding workbench 2 and are used to detect the wire bow height of the cutting part; the left sensor 3 and the right sensor 4 are both electrically connected to the input end of the controller, and the output end of the controller is electrically connected to the feeding workbench 2.

[0039] In this specific embodiment:

[0040] The left sensor 3 and the right sensor 4 are both laser sensors.

[0041] like Figure 3 As shown, the multi-wire cutting machine 1 includes a linear saw 11, a spindle mechanism 12, a first winding mechanism 13 and a second winding mechanism 14; the first winding mechanism 13 and the second winding mechanism 14 are respectively arranged on the left and right sides of the spindle mechanism 12, the linear saw 11 is arranged in the spindle mechanism 12, and the two ends of the linear saw 11 are respectively wound on the first winding mechanism 13 and the second winding mechanism 14; the feeding workbench 2 is located above the spindle mechanism 12 and directly facing the linear saw 11. Furthermore, the spindle mechanism 12 includes a first main roller 121, a second main roller 122, a first main roller drive motor and a second main roller drive motor; the first main roller 121 and the second main roller 122 are arranged at intervals, and the linear saw 11 is arranged between the first main roller 121 and the second main roller 122; the first main roller drive motor is axially connected to the first main roller 121 and is used to drive the first main roller 121 to rotate forward or reverse, and the second main roller drive motor is axially connected to the second main roller 122 and is used to drive the second main roller 122 to rotate forward or reverse. Further, the first winding mechanism 13 includes a winding roller 131, a wire arrangement mechanism 132, a tension buffer roller 133 and a passive guide wheel 134; the wire saw 11 is wound on the winding roller 131 through the passive guide wheel 134, the tension buffer roller 133 and the wire arrangement mechanism 132 in sequence; the wire arrangement mechanism 132 includes a wire arrangement roller 1321 and a wire arrangement guide rail 1322, the wire arrangement roller 1321 is slidably mounted on the wire arrangement guide rail 1322, the wire saw 11 is wound on the winding roller 131 through the wire arrangement roller 1321, and the wire saw 11 from the wire arrangement roller 1321 to the winding roller 131 is perpendicular to the winding roller 131; the second winding mechanism has the same structure as the first winding mechanism. The wire saw 11 is specifically a diamond wire. During the working process of the present invention, the material 5 is fixed on the feeding workbench 2, and the feeding workbench 2 drives the material 5 to squeeze the wire saw 11 to form a wire bow height.

[0042] The main shaft mechanism 12 draws the wire saw 11 out of the first winding mechanism 13, and the wire arrangement roller 1321 reciprocates on the wire arrangement guide rail 1322 so that the wire saw 11 is always perpendicular to the winding roller 131, so as to prevent the wire saw 11 from being broken due to lateral friction on the winding roller 131. The wire saw 11 is tensioned and has a certain buffering effect when passing through the tension buffer roller 133. The wire saw 11 is wound around the main shaft mechanism 12 through the passive guide wheel 134. The first main roller shaft 121 and the second main roller shaft 121 in the main shaft mechanism 12 are connected to each other. 2 is driven by a separate motor, and the linear saw 11 is sent to the second winding mechanism 14 through the main shaft mechanism 12 with the same mechanism equipment; the linear saw 11 is sent from the first winding mechanism 13 to the second winding mechanism 14 by controlling the first main roller drive motor and the second main roller drive motor to rotate forward, and the linear saw is sent from the second winding mechanism 14 to the first winding mechanism 13 by controlling the first main roller drive motor and the second main roller drive motor to rotate backward, and the linear saw is sent from the second winding mechanism 14 to the first winding mechanism 13 by reciprocating in this forward and reverse manner to achieve the purpose of cutting the material 5.

[0043] The present invention adopts left and right sensors to detect the real-time wire bow height of the multi-wire cutting machine. When the multi-wire cutting machine rotates clockwise, the cutting liquid also flows and sputters clockwise, and the left sensor is activated at this time. When the multi-wire cutting machine rotates counterclockwise, the cutting liquid also flows and sputters counterclockwise, and the right sensor is activated at this time. This can prevent the cutting liquid from flowing and sputtering in the reciprocating operation of the multi-wire cutting machine, thereby affecting the detection accuracy of the sensor. The controller adjusts the feed speed of the feed workbench through the real-time wire bow height detected by the left sensor and / or the right sensor to achieve automatic adjustment and control of the wire bow height of the multi-wire cutting machine. In this process, no sample trial production and no manual participation are required, so the sample trial production cost can be reduced, the consistency of mass production can be improved, the cost of mass production consumables can be reduced, the labor cost can be reduced to avoid human errors, and the production efficiency can be improved.

[0044] Based on the above-mentioned automatic adjustment control system for the wire bow height of a multi-wire cutting machine, the present invention also provides an automatic adjustment control method for the wire bow height of a multi-wire cutting machine.

[0045] like Figure 4 As shown, a method for automatically adjusting the height of a wire bow of a multi-wire cutting machine is provided, which uses the above-mentioned automatic adjustment control system for the height of a wire bow of a multi-wire cutting machine to automatically adjust the height of the wire bow of the multi-wire cutting machine, and includes the following steps:

[0046] Determine whether the multi-wire cutting machine is running. If not, enable the left sensor and the right sensor at the same time. If yes, determine the running direction of the multi-wire cutting machine. If the multi-wire cutting machine runs clockwise, enable the left sensor. If the multi-wire cutting machine runs counterclockwise, enable the right sensor.

[0047] The controller adjusts the feed speed of the feed table according to the preset wire bow height and the real-time wire bow height detected by the enabled sensor to achieve automatic adjustment and control of the wire bow height of the multi-wire cutting machine.

[0048] The present invention adopts left and right sensors to detect the real-time wire bow height of the multi-wire cutting machine. When the multi-wire cutting machine rotates clockwise, the cutting liquid also flows and sputters clockwise, and the left sensor is activated at this time. When the multi-wire cutting machine rotates counterclockwise, the cutting liquid also flows and sputters counterclockwise, and the right sensor is activated at this time. This can prevent the cutting liquid from flowing and sputtering in the reciprocating operation of the multi-wire cutting machine, thereby affecting the detection accuracy of the sensor. The controller adjusts the feed speed of the feed workbench through the real-time wire bow height detected by the left sensor and / or the right sensor to achieve automatic adjustment and control of the wire bow height of the multi-wire cutting machine. In this process, no sample trial production and no manual participation are required, so the sample trial production cost can be reduced, the consistency of mass production can be improved, the cost of mass production consumables can be reduced, the labor cost can be reduced to avoid human errors, and the production efficiency can be improved.

[0049] In the present invention, the controller adjusts the feeding speed of the feeding table according to the preset wire bow height and the real-time wire bow height detected by the enabled sensor to realize automatic adjustment and control of the wire bow height of the multi-wire cutting machine. There are two schemes.

[0050] Option 1:

[0051] The controller uses the following formula to adjust the feed speed of the feed table: feed speed V1 of the feed table = preset feed speed V2 + feed speed adjustment value Delta_V;

[0052] like Figure 5 As shown, when only the left sensor or the right sensor is enabled, if the real-time line bow height detected by the left sensor or the right sensor does not meet the preset line bow height, the feed speed adjustment value Delta_V is calculated by the PID adjustment method; when the left sensor and the right sensor are enabled at the same time, if the average value of the real-time line bow height detected by the left sensor and the right sensor does not meet the preset line bow height, the feed speed adjustment value Delta_V is calculated by the PID adjustment method. When the left sensor and the right sensor are enabled at the same time, the following step is also included, comparing the real-time line bow height detected by the left sensor and the right sensor to correct the sensor detection error.

[0053] The PID adjustment process is as follows:

[0054] ERROR = sensor feedback height - preset required height; where the sensor feedback height is the real-time line bow height detected by the left sensor or the right sensor, or the average of the real-time line bow heights detected by the left sensor and the right sensor; ERROR is also called the line bow height error value or deviation value;

[0055] P_VAL=ERROR*Kp; where P_VAL is the proportional adjustment amount in PID, and Kp is the proportional coefficient;

[0056] I_VAL=I_VAL+ERROR*Ki; where I_VAL is the integral adjustment value in PID, and Ki is the integral time;

[0057] D_VAL = feedforward compensation value, usually a fixed value is used to compensate for the absolute error caused by the machine, or no compensation is required. D_VAL is the differential adjustment value in PID;

[0058] Delta_V=P_VAL+I_VAL+D_VAL.

[0059] Option 2:

[0060] The controller uses the following formula to adjust the feed speed of the feed table: feed speed V1 of the feed table = preset feed speed V2 ± feed speed adjustment value Delta_V, wherein the feed speed adjustment value Delta_V is used as a fixed value to adjust the feed speed V1 of the feed table;

[0061] like Figure 6 As shown, when only the left sensor or the right sensor is enabled, the feed speed V1 of the feed table is not adjusted; when both the left sensor and the right sensor are enabled, when the average value of the real-time line bow height detected by the left sensor and the right sensor is higher than the preset line bow height, the feed speed V1 of the feed table is slowed down, and the feed speed V1 of the feed table is equal to the preset feed speed V2-feed speed adjustment value Delta_V; when the average value of the real-time line bow height detected by the left sensor and the right sensor is lower than the preset line bow height, the feed speed V1 of the feed table is accelerated, and the feed speed V1 of the feed table is equal to the preset feed speed V2+feed speed adjustment value Delta_V; when the average value of the real-time line bow height detected by the left sensor and the right sensor meets (is equal to) the preset line bow height, the feed speed V1 of the feed table is not adjusted.

[0062] Under the condition that the left sensor and the right sensor are enabled at the same time, the following step is also included: the real-time wire bow height detected by the left sensor and the right sensor are compared to correct the sensor detection error. Under the condition that the left sensor and the right sensor are enabled at the same time, it means that the multi-wire cutting machine is not running, that is, the roller of the main shaft mechanism of the multi-wire cutting machine reciprocates to a stop point (speed is zero), and the left and right sensor data are used for comparison and correction to eliminate the detection error caused by water flow during the rotation of the multi-wire cutting machine.

[0063] In the present invention, it should be noted that: the multi-wire cutting machine not running does not mean that the multi-wire cutting machine stops working, but that the main roller shaft in the main shaft mechanism reciprocates to a stop point (speed is zero).

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for automatically adjusting the height of a wire bow of a multi-wire cutting machine, characterized in that: The wire bow height automatic adjustment control system of a multi-wire cutting machine is used to automatically adjust and control the wire bow height of the multi-wire cutting machine; wherein, the wire bow height automatic adjustment control system of the multi-wire cutting machine comprises a multi-wire cutting machine, a feeding table, a left sensor, a right sensor and a controller; the feeding table is installed above the multi-wire cutting machine and directly faces the cutting part of the multi-wire cutting machine, the left sensor and the right sensor are respectively installed on the left and right sides of the feeding table and are used to detect the wire bow height of the cutting part; the left sensor and the right sensor are both electrically connected to the input end of the controller, and the output end of the controller is electrically connected to the feeding table; The multi-wire cutting machine wire bow height automatic adjustment control method comprises the following steps: Determine whether the multi-wire cutting machine is running. If not, enable the left sensor and the right sensor at the same time. If yes, determine the running direction of the multi-wire cutting machine. If the multi-wire cutting machine runs clockwise, enable the left sensor. If the multi-wire cutting machine runs counterclockwise, enable the right sensor. The controller adjusts the feed speed of the feed table according to the preset wire bow height and the real-time wire bow height detected by the enabled sensor to achieve automatic adjustment and control of the wire bow height of the multi-wire cutting machine.

2. The method for automatically adjusting the height of the wire bow of a multi-wire cutting machine according to claim 1 is characterized in that: The controller uses the following formula to adjust the feed speed of the feed table: feed speed V1 of the feed table = preset feed speed V2 + feed speed adjustment value Delta_V; Under the condition that only the left sensor or the right sensor is enabled, if the real-time wire bow height detected by the left sensor or the right sensor does not meet the preset wire bow height, the feed speed adjustment value Delta_V is calculated by the PID adjustment method; When the left sensor and the right sensor are enabled at the same time, if the average value of the real-time wire bow height detected by the left sensor and the right sensor does not meet the preset wire bow height, the PID adjustment method is used to calculate the feed speed adjustment value Delta_V.

3. The method for automatically adjusting the height of the wire bow of a multi-wire cutting machine according to claim 1, characterized in that: The controller uses the following formula to adjust the feed speed of the feed table: feed speed V1 of the feed table = preset feed speed V2 ± feed speed adjustment value Delta_V, wherein the feed speed adjustment value Delta_V is used as a fixed value to adjust the feed speed V1 of the feed table; When only the left sensor or the right sensor is enabled, the feed table feed speed V1 is not adjusted; When both the left and right sensors are enabled, When the average value of the real-time wire bow height detected by the left sensor and the right sensor is higher than the preset wire bow height, the feed speed V1 of the feed table is slowed down, and the feed speed V1 of the feed table = the preset feed speed V2 - the feed speed adjustment value Delta_V; When the average value of the real-time wire bow height detected by the left sensor and the right sensor is lower than the preset wire bow height, the feed speed V1 of the feed table is increased, and the feed speed V1 of the feed table = the preset feed speed V2 + the feed speed adjustment value Delta_V; When the average value of the real-time wire bow height detected by the left sensor and the right sensor meets the preset wire bow height, the feed speed V1 of the feed table is not adjusted.

4. The method for automatically adjusting the height of a wire bow of a multi-wire cutting machine according to claim 2 or 3, characterized in that: When the left sensor and the right sensor are enabled at the same time, the following steps are also included: comparing the real-time line bow heights detected by the left sensor and the right sensor to correct the sensor detection error.

5. The method for automatically adjusting the height of a wire bow of a multi-wire cutting machine according to claim 1, characterized in that: The left sensor and the right sensor are both laser sensors.

6. The method for automatically adjusting the height of a wire bow of a multi-wire cutting machine according to claim 1 or 5, characterized in that: The multi-wire cutting machine includes a linear saw, a spindle mechanism, a first winding mechanism and a second winding mechanism; the first winding mechanism and the second winding mechanism are respectively arranged on the left and right sides of the spindle mechanism, the linear saw is arranged in the spindle mechanism, and the two ends of the linear saw are respectively wound on the first winding mechanism and the second winding mechanism; the feed workbench is located above the spindle mechanism and directly faces the linear saw.

7. The method for automatically adjusting the height of a wire bow of a multi-wire cutting machine according to claim 6, characterized in that: The spindle mechanism includes a first main roller, a second main roller, a first main roller drive motor and a second main roller drive motor; the first main roller and the second main roller are arranged at intervals, and the linear saw is arranged between the first main roller and the second main roller; the first main roller drive motor is connected to the first main roller and is used to drive the first main roller to rotate forward or reverse, and the second main roller drive motor is connected to the second main roller and is used to drive the second main roller to rotate forward or reverse.

8. The method for automatically adjusting the height of a wire bow of a multi-wire cutting machine according to claim 6, characterized in that: The first winding mechanism includes a winding roller, a wire arrangement mechanism, a tension buffer roller and a passive guide wheel; the linear saw is wound on the winding roller through the passive guide wheel, the tension buffer roller and the wire arrangement mechanism in sequence; the wire arrangement mechanism includes a wire arrangement roller and a wire arrangement guide rail, the wire arrangement roller is slidably installed on the wire arrangement guide rail, the linear saw is wound on the winding roller through the wire arrangement roller, and the linear saw from the wire arrangement roller to the winding roller is perpendicular to the winding roller; the second winding mechanism has the same structure as the first winding mechanism.

9. The method for automatically adjusting the height of a wire bow of a multi-wire cutting machine according to claim 6, characterized in that: The wire saw is specifically a diamond wire.

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