Tension optimization control system and method for multi-shaft tungsten filament drawing machine
By designing a tension optimization control system in a multi-axis tungsten wire drawing machine, using the motor speed calculation module and PID adjustment compensation module, the problems of inconsistent linear speed and frequent reciprocating swing rods are solved, and the precise control of the tension of the tungsten wire is achieved, and the working efficiency and product quality of the equipment are improved.
Patent Information
- Application Number
- CN202411427779.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-14
- Publication Date
- 2025-02-25
AI Technical Summary
In actual operation, existing multi-axis tungsten wire drawing machines have problems such as inconsistent linear speed and frequent swing of tension swing rods, resulting in poor quality and continuity of tungsten wires, and limited working efficiency and product quality.
A tension optimization control system for a multi-axis tungsten wire drawing machine is designed, including a multi-axis wire drawing device, a motor speed calculation module and a PID adjustment compensation module. By installing the tension swing rod and mold, the tension between each target shaft is monitored and adjusted in real time, and the tension of the tungsten wire is accurately controlled using the PID adjustment compensation module.
Accurate tension control of the tungsten wire during the stretching process is achieved, ensuring that the tungsten wire is within the predetermined stress range, improving the quality and continuity of the tungsten wire, and enhancing the working efficiency and product quality of the equipment.
Smart Images
Figure CN119500798A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of metal processing technology, and in particular to a tension optimization control system and method for a multi-axis tungsten wire drawing machine. Background Art
[0002] In the field of mechanical manufacturing and metal processing technology, multi-axis tungsten wire drawing machine is a common equipment, which is mainly used to draw thick tungsten wire into thin tungsten wire. This equipment usually includes a reel, a multi-stage traction shaft and a reel, as well as a die and a tension swing rod installed between them. During the working process, the tungsten wire is stretched step by step through the control of the die and the tension swing rod to achieve the required diameter. At the same time, the control system adjusts the speed of each axis to ensure that the tension of the tungsten wire during the stretching process is within the predetermined range, thereby ensuring the quality and continuity of the tungsten wire.
[0003] In the existing multi-axis tungsten wire drawing machine, the moving parts mainly include unwinding shaft, multi-stage traction shaft and winding shaft, etc., between which molds and tension swing rods are installed. Through these components, the stretching and tension control of tungsten wire can be realized. In addition, the speed ratio relationship of each axis is calculated by an algorithm, and the real-time PID adjustment compensation is performed by a servo motor. However, there are still some problems in the actual operation of the existing multi-axis tungsten wire drawing machine. First, due to the precision of mold manufacturing, wear caused by the use process, and the lubrication condition of the graphite emulsion on the surface of the tungsten wire when it passes through the mold, the actual line speed may be inconsistent with the theoretical line speed, thereby affecting the quality and continuity of the tungsten wire. Secondly, the tension swing rod may have a high frequency of reciprocating swings in actual production, and sometimes the swing rod cannot be restored to the predetermined safety area, which may cause the tungsten wire to break. These problems limit the working efficiency and product quality of the existing multi-axis tungsten wire drawing machine. Summary of the invention
[0004] The purpose of this application is to provide a tension optimization control system and method for a multi-axis tungsten wire drawing machine, which can improve the working efficiency and product quality of the multi-axis tungsten wire drawing machine.
[0005] To achieve the above objectives, this application provides the following solutions:
[0006] In a first aspect, the present application provides a tension optimization control system for a multi-axis tungsten wire drawing machine, including a multi-axis wire drawing device, a motor speed calculation module and a PID adjustment compensation module.
[0007] The multi-axis wire drawing device comprises an unwinding shaft, a multi-stage traction shaft and a rewinding shaft; a tension swing rod and a mold are arranged between the unwinding shaft and the traction shaft, between two traction shafts, and between the traction shaft and the rewinding shaft; the tension swing rod comprises a tension spring and a torque sensor; the torque sensor is used to measure the tension between the current shafts and the position of the swing rod; the unwinding shaft, each stage of the traction shaft and the rewinding shaft are all connected to a servo motor;
[0008] The motor speed calculation module is used to: calculate the linear speed ratio of the tungsten wire after passing through each mold according to the mold hole diameter of all the molds; determine the linear speed ratio of the tungsten wire after passing through each mold as the linear speed ratio of the tungsten wire passing through each target axis; calculate the linear speed of the current tungsten wire passing through the unwinding shaft according to the initial diameter of the unwinding shaft, the number of turns of each layer of tungsten wire and the diameter at the bottom layer of the unwinding shaft; calculate the linear speed of the tungsten wire passing through each target axis according to the linear speed of the current tungsten wire passing through the unwinding shaft and the linear speed ratio of the tungsten wire passing through each target axis; calculate the motor speed of each target axis according to the linear speed of the tungsten wire passing through each target axis, the speed ratio of the reducer corresponding to each target axis and the diameter of the target axis at which the target axis contacts the tungsten wire; the target axis is the unwinding shaft, any level traction shaft or the winding shaft;
[0009] The PID adjustment and compensation module is used to: perform PID adjustment on the speed of the servo motor corresponding to each target axis according to the motor speed of each target axis, the tension between the current target axes and the set tension safety range, so that the tension between the target axes is within the set tension safety range.
[0010] Optionally, in terms of performing PID adjustment on the speed of the servo motor corresponding to each target axis according to the motor speed of each target axis, the current tension between the target axes and the set tension safety range so that the tension between the target axes is within the set tension safety range, the PID adjustment compensation module is used to: if the tension between the current target axes is not within the set tension safety range, control the speed of the servo motor corresponding to the current target axis through a PID controller.
[0011] Optionally, if the tension between the current target axes is not within the set tension safety range, the rotation speed of the servo motor corresponding to the current target axis is controlled by a PID controller, and the PID adjustment compensation module is used to:
[0012] Determine whether the tension between the current target axes is within the set tension safety range. If the tension between the current target axes is less than the minimum tension limit, the speed of the servo motor corresponding to the current target axis is increased through the PID controller; if the tension between the current target axes is greater than the maximum tension limit, the speed of the servo motor corresponding to the current target axis is reduced; if the tension between the current target axes is not less than the minimum tension limit and not greater than the maximum tension limit, the speed of the servo motor corresponding to the current target axis is not adjusted; the minimum tension limit and the maximum tension limit are the lower limit and upper limit of the set tension safety range.
[0013] Optionally, the mold core is diamond polycrystal.
[0014] In a second aspect, the present application provides a tension optimization control method for a multi-axis tungsten wire drawing machine, comprising:
[0015] The linear speed ratio of the tungsten wire after passing through each die is calculated based on the die hole diameters of all the dies;
[0016] The linear velocity ratio of the tungsten wire after passing through each die is determined as the linear velocity ratio of the tungsten wire passing through each target axis;
[0017] The linear speed of the current tungsten wire passing through the unwinding shaft is calculated according to the initial diameter of the unwinding shaft, the number of turns of each layer of tungsten wire and the diameter of the bottom layer of the unwinding shaft;
[0018] The linear speed of the tungsten wire passing through each target axis is calculated according to the linear speed of the current tungsten wire passing through the unwinding axis and the linear speed ratio of the tungsten wire passing through each target axis; the target axis is the unwinding axis, any level traction axis or the winding axis;
[0019] The motor speed of each target axis is calculated according to the linear speed of the tungsten wire passing through each target axis, the speed ratio of the reducer corresponding to each target axis, and the diameter of the target axis at the point where the target axis contacts the tungsten wire;
[0020] The speed of the servo motor corresponding to each target axis is PID-adjusted according to the motor speed of each target axis, the tension between the current target axes and the set tension safety range, so that the tension between the target axes is within the set tension safety range.
[0021] According to the specific embodiments provided in this application, this application discloses the following technical effects:
[0022] The present application provides a tension optimization control system and method for a multi-axis tungsten wire drawing machine. By installing molds and tension swing rods between various moving parts of the multi-axis tungsten wire drawing machine, namely, between the unwinding shaft and the traction shaft, between two traction shafts, and between the traction shaft and the winding shaft, it is ensured that the tungsten wire has tension control in each stretching link so that it is within a predetermined force range, thereby ensuring the continuity of the tungsten wire; by real-time monitoring of the tension between each target shaft, PID tension compensation is performed according to the real-time change of the tension, thereby more accurately controlling the tension of the tungsten wire during the stretching process, ensuring that it is within the predetermined force range, and improving the quality and continuity of the tungsten wire. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0024] Figure 1 A schematic structural diagram of a tension optimization control system for a multi-axis tungsten wire drawing machine provided in one embodiment of the present application;
[0025] Figure 2 A schematic diagram of a stretching member between an unwinding shaft and a first-stage traction shaft provided in an embodiment of the present application;
[0026] Figure 3 A schematic cross-sectional view of an unwinding shaft provided in one embodiment of the present application;
[0027] Figure 4 A schematic diagram of the structure of a multi-axis tungsten wire drawing machine provided in one embodiment of the present application;
[0028] Figure 5 A schematic flow chart of a tension optimization control method for a multi-axis tungsten wire drawing machine provided in one embodiment of the present application.
[0029] Reference numerals:
[0030] Unwinding shaft—1, wire dividing shaft—2, graphite emulsion box—3, heating furnace—4, guide transition wheel—5, traction shaft—6, winding shaft—7, dust collector—8, first guide transition wheel—9, second guide transition wheel—10, third guide transition wheel—11. DETAILED DESCRIPTION
[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0032] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.
[0033] In an exemplary embodiment, Figure 1 As shown, a tension optimization control system for a multi-axis tungsten wire drawing machine is provided, including a multi-axis wire drawing device, a motor speed calculation module and a PID adjustment compensation module;
[0034] The multi-axis wire drawing device includes an unwinding shaft, a multi-stage traction shaft and a winding shaft; a tension swing rod and a mold are arranged between the unwinding shaft and the traction shaft, between two traction shafts, and between the traction shaft and the winding shaft; the tension swing rod includes a tension spring and a torque sensor; the torque sensor is used to measure the tension and swing rod position between the current shafts; the unwinding shaft, each stage of traction shaft and the winding shaft are all connected to a servo motor.
[0035] The material of the mold core can be diamond polycrystal.
[0036] like Figure 4 As shown, the tungsten wire at the unwinding shaft 1 is divided by the wire dividing shaft 2. Before the tungsten wire passes through the die for wire drawing, it will pass through the graphite emulsion box 3 and the heating furnace 4 to evenly apply graphite emulsion on the surface of the tungsten wire, and the tungsten wire coated with graphite emulsion is dried by the heating furnace 4, which can play a lubricating role when the tungsten wire passes through the die. Before the unwinding shaft 7 is collected, the tungsten wire is dusted by the dust collector 8.
[0037] Between the various moving parts of the multi-axis tungsten wire drawing machine, such as the unwinding shaft, multi-stage traction shaft, and winding shaft, dies and tension swing rods are installed. Figure 2 As shown, the first mold and the first tension swing rod are installed between the unwinding shaft and the first-level traction shaft; the second mold and the second tension swing rod are installed between the first-level and second-level traction shafts; there is also an nth mold and an nth tension swing rod between the last-level traction shaft and the winding shaft; this ensures that the tungsten wire has tension control in each stretching link, ensuring that it is within the predetermined force range to ensure that the tungsten wire is continuous. The mold core material is diamond polycrystalline, which can withstand high pressure and high temperature. The tension swing rod is composed of tension springs, torque sensors, etc., which can be linearly and accurately controlled throughout the process, and can remain stable in high-frequency swings and provide real-time feedback on the position and tension.
[0038] Three guide transition wheels are respectively arranged between the unwinding shaft and the traction shaft, the traction shafts of each level, and the traction shaft and the winding shaft, and are named the first guide transition wheel 9, the second guide transition wheel 10 and the third guide transition wheel 11. The tension swing rod is rotatably connected to the first guide transition wheel 9; the second guide transition wheel 10 and the third guide transition wheel 11 are respectively arranged before and after the mold. The second guide transition wheel 10 and the third guide transition wheel 11 arranged before and after the mold are used for precise positioning and guiding to ensure the positional relationship between the tungsten wire and the mold hole of the mold.
[0039] The motor speed calculation module is used to: calculate the linear speed ratio of the tungsten wire after passing through each mold according to the mold hole diameter of all the molds; determine the linear speed ratio of the tungsten wire after passing through each mold as the linear speed ratio of the tungsten wire passing through each target axis; calculate the linear speed of the current tungsten wire passing through the unwinding shaft according to the initial diameter of the unwinding shaft, the number of turns of each layer of tungsten wire and the diameter at the bottom layer of the unwinding shaft; calculate the linear speed of the tungsten wire passing through each target axis according to the linear speed of the current tungsten wire passing through the unwinding shaft and the linear speed ratio of the tungsten wire passing through each target axis; calculate the motor speed of each target axis according to the linear speed of the tungsten wire passing through each target axis, the speed ratio of the reducer corresponding to each target axis and the diameter of the target axis at which the target axis contacts the tungsten wire; the target axis is the unwinding shaft, any level of traction shaft or the winding shaft.
[0040] Figure 3 This is a cross-sectional view of the unwinding shaft. It can be seen from the figure that the diameter of the tungsten wire of the unwinding shaft at the initial position is 100 mm, and the diameter at the bottom layer is 80 mm.
[0041] The current unwinding motor speed calculation formula: Assuming that the die hole diameters of each level of the die are D1, D2, D3...D n Based on the principle of constant volume, the linear velocity ratio of the tungsten wire after passing through each mold is as follows:
[0042] 1 / (D1*D1):1 / (D2*D2):1 / (D3*D3)...:1 / (D n *D n )(1);
[0043] Where D1 is the diameter of the die hole of the first die, D2 is the diameter of the die hole of the second die, D3 is the diameter of the die hole of the third die, and D n is the die hole diameter of the nth die.
[0044] The linear velocity ratio of the tungsten wire after passing through each mold is used as the linear velocity ratio of the tungsten wire passing through the unwinding shaft, each level of traction shaft and the winding shaft. The linear velocity of the current tungsten wire passing through the unwinding shaft is calculated according to the initial diameter of the unwinding shaft, the number of turns of each layer of tungsten wire and the diameter of the bottom layer of the unwinding shaft. Then, the linear velocity of the tungsten wire passing through each target shaft is calculated according to the linear velocity ratio of the tungsten wire passing through the unwinding shaft, each level of traction shaft and the winding shaft and the linear velocity of the current tungsten wire passing through the unwinding shaft. Then, the motor speed N of each target shaft is calculated according to formula (2).
[0045] The calculation formula of the linear velocity of the tungsten wire passing through the current target axis is as follows:
[0046] V = (Π*D*N) / i (2);
[0047] Wherein, V is the linear velocity of the tungsten wire passing through the current target axis (in meters per minute), Π is the pi, D is the diameter of the current target axis at the point where it contacts the tungsten wire (in meters), N is the speed of the servo motor (in revolutions per minute), and i is the reduction ratio of the reducer corresponding to the current target axis.
[0048] According to the diameter of the tungsten wire on the unwinding shaft, which is 0.0506 mm, the diameter of the tungsten wire at the initial position is assumed to be 100 mm, the number of turns of each initial layer of tungsten wire is 400, and the diameter at the bottom layer is 80 mm. Assuming the set unwinding speed is 100 m / min, and the speed ratio of the servo motor reducer at the unwinding shaft is 5, it can be calculated that the current speed of the unwinding motor is about 1592 rpm. For each layer of tungsten wire dropped, the diameter decreases accordingly. For example, when the tungsten wire drops 100 layers, its diameter becomes 100-2*100*0.0506=89.88 mm. At this time, the linear speed must be maintained at 100 m / min, and the speed of the unwinding motor is about 1772 rpm. By analogy, the speed of the unwinding motor at any position can be calculated. Then, according to the size of the mold aperture, the speed or length ratio before and after the mold is calculated based on the principle of constant volume. Assuming that the first mold aperture is 0.0491 mm, the tungsten wire speed relationship between the unwinding shaft and the first-level traction shaft is (0.0491*0.0491) / (0.0506*0.0506)=0.9415. Similarly, according to the size of the mold aperture, the tungsten wire speed ratio of other axes can be calculated; according to the speed ratio of the reducer of each axis and the diameter of the traction shaft contacting the tungsten wire, the motor speed of each axis can be calculated.
[0049] The PID adjustment compensation module is used to: perform PID adjustment on the speed of the servo motor corresponding to each target axis according to the motor speed of each target axis, the tension between the current target axes and the set tension safety range, so that the tension between the target axes is within the set tension safety range.
[0050] In actual production, since the precision error of mold manufacturing is ±0.0002mm, there will be certain wear during use. The lubrication condition of the graphite emulsion on the surface of the tungsten wire will also change dynamically when it passes through the mold, which may cause the actual line speed to be inconsistent with the theoretical line speed. Therefore, there is a tension rocker to buffer and feedback the position and force conditions, and then perform real-time PID adjustment compensation through the servo motor based on the feedback data.
[0051] In another exemplary embodiment of the present application, the speed of the servo motor corresponding to each target axis is PID-adjusted according to the motor speed of each target axis, the current tension between the target axes and the set tension safety range so that the tension between the target axes is within the set tension safety range. The PID adjustment compensation module is used to: if the current tension between the target axes is not within the set tension safety range, control the speed of the servo motor corresponding to the current target axis through a PID controller.
[0052] In terms of controlling the rotation speed of the servo motor corresponding to the current target axis through a PID controller if the tension between the current target axes is not within the set tension safety range, the PID adjustment compensation module is used to:
[0053] Determine whether the tension between the current target axes is within the set tension safety range. If the tension between the current target axes is less than the minimum tension limit, the speed of the servo motor corresponding to the current target axis is increased through the PID controller; if the tension between the current target axes is greater than the maximum tension limit, the speed of the servo motor corresponding to the current target axis is reduced; if the tension between the current target axes is not less than the minimum tension limit and not greater than the maximum tension limit, the speed of the servo motor corresponding to the current target axis is not adjusted; the minimum tension limit and the maximum tension limit are the lower limit and upper limit of the set tension safety range.
[0054] That is, according to the real-time tension situation at each target axis, when the tension is too high, the speed at this target axis is appropriately reduced, for example, by 1 / 1000, and when the tension is too small, the speed here is appropriately increased, for example, by 2 / 1000, that is, the theoretical speed ratio relationship of each level is accurately corrected. The PID tension compensation has a response cycle of 2 milliseconds, which can improve efficiency.
[0055] In actual operation, if the tension compensation switch is turned off, each axis runs at the theoretically calculated speed ratio. At the moment of starting at the set minimum speed, the tungsten wire often becomes too loose or too tight in some parts. It can only run normally after the tension compensation is turned on.
[0056] After the above operation, the equipment runs more smoothly. In actual operation, it is found that the wire breakage rate of tungsten wire has been reduced from 10% to 2% now, which greatly improves production efficiency and product quality.
[0057] The present application appropriately reduces the speed at a location where the tension is relatively high, and appropriately increases the speed at a location where the tension is relatively small, that is, accurately corrects the relationship between the speed ratios of each level, and accurately corrects the speed ratios of each level through PID tension compensation timing. This adjustment range becomes smaller and smoother, making the equipment significantly smoother after operation, avoiding the problem of inconsistency between the actual line speed and the theoretical line speed caused by the precision of mold manufacturing, wear caused during use, and the lubrication condition of the graphite emulsion on the surface of the tungsten wire when passing through the mold, improving the stability and work efficiency of the equipment, and avoiding the tension swing arm from swinging back and forth at a higher frequency in actual production, and sometimes the swing arm cannot return to the predetermined safe area, which may cause the tungsten wire to break.
[0058] Based on the same inventive concept, the embodiment of the present application also provides a method for optimizing the tension of a multi-axis tungsten wire drawing machine for realizing the above-mentioned tension optimization control system of the multi-axis tungsten wire drawing machine. The implementation scheme for solving the problem provided by the method is similar to the implementation scheme recorded in the above-mentioned system, so the specific limitations in the embodiments of the method for optimizing the tension of one or more multi-axis tungsten wire drawing machines provided below can be referred to the above-mentioned limitations on the tension optimization control system of the multi-axis tungsten wire drawing machine, and will not be repeated here.
[0059] In an exemplary embodiment, Figure 5 As shown, a tension optimization control method for a multi-axis tungsten wire drawing machine is provided, comprising:
[0060] S1: Calculate the linear velocity ratio of the tungsten wire after passing through each die according to the die hole diameters of all the dies;
[0061] S2: determining the linear velocity ratio of the tungsten wire after passing through each mold as the linear velocity ratio of the tungsten wire passing through each target axis;
[0062] S3: Calculate the linear speed of the current tungsten wire passing through the unwinding shaft according to the initial diameter of the unwinding shaft, the number of turns of each layer of tungsten wire and the diameter of the bottom layer of the unwinding shaft;
[0063] S4: Calculate the linear velocity of the tungsten wire passing through each target axis according to the linear velocity of the current tungsten wire passing through the unwinding axis and the linear velocity ratio of the tungsten wire passing through each target axis; the target axis is the unwinding axis, any level traction axis or the winding axis;
[0064] S5: Calculate the motor speed of each target axis according to the linear speed of the tungsten wire passing through each target axis, the speed ratio of the reducer corresponding to each target axis, and the diameter of the target axis at the point where the target axis contacts the tungsten wire;
[0065] S6: PID adjustment is performed on the speed of the servo motor corresponding to each target axis according to the motor speed of each target axis, the current tension between the target axes and the set tension safety range, so that the tension between the target axes is within the set tension safety range.
[0066] The present application can be widely used in application fields such as mechanical manufacturing, metal processing, and control system optimization. The present application can accurately correct the speed ratios of each level according to the real-time changes in tension, so that the tension compensation becomes smaller and smoother, thereby improving the working efficiency and product quality of the tungsten wire drawing machine. This has important practical value for the fields of mechanical manufacturing and metal processing. Secondly, the technical solution of the present application can also be applied to the field of control system optimization. Through precise control and adjustment, the stability and reliability of the system can be improved, thereby improving production efficiency and reducing production costs. Finally, with the development of science and technology, the demand for high-precision and high-efficiency tungsten wire drawing machines will become greater and greater. Therefore, the technical solution of the present application has broad market prospects.
[0067] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0068] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.
Claims
1. A tension optimization control system for a multi-axis tungsten wire drawing machine, characterized in that: The tension optimization control system of the multi-axis tungsten wire drawing machine includes a multi-axis wire drawing device, a motor speed calculation module and a PID adjustment compensation module; The multi-axis wire drawing device comprises an unwinding shaft, a multi-stage traction shaft and a rewinding shaft; a tension swing rod and a mold are arranged between the unwinding shaft and the traction shaft, between two traction shafts, and between the traction shaft and the rewinding shaft; the tension swing rod comprises a tension spring and a torque sensor; the torque sensor is used to measure the tension between the current shafts and the position of the swing rod; the unwinding shaft, each stage of the traction shaft and the rewinding shaft are all connected to a servo motor; The motor speed calculation module is used to: calculate the linear speed ratio of the tungsten wire after passing through each mold according to the mold hole diameter of all the molds; determine the linear speed ratio of the tungsten wire after passing through each mold as the linear speed ratio of the tungsten wire passing through each target axis; calculate the linear speed of the current tungsten wire passing through the unwinding shaft according to the initial diameter of the unwinding shaft, the number of turns of each layer of tungsten wire and the diameter at the bottom layer of the unwinding shaft; calculate the linear speed of the tungsten wire passing through each target axis according to the linear speed of the current tungsten wire passing through the unwinding shaft and the linear speed ratio of the tungsten wire passing through each target axis; calculate the motor speed of each target axis according to the linear speed of the tungsten wire passing through each target axis, the speed ratio of the reducer corresponding to each target axis and the diameter of the target axis at which the target axis contacts the tungsten wire; the target axis is the unwinding shaft, any level traction shaft or the winding shaft; The PID adjustment and compensation module is used to: perform PID adjustment on the speed of the servo motor corresponding to each target axis according to the motor speed of each target axis, the tension between the current target axes and the set tension safety range, so that the tension between the target axes is within the set tension safety range.
2. The tension optimization control system of the multi-axis tungsten wire drawing machine according to claim 1, characterized in that: In terms of performing PID adjustment on the speed of the servo motor corresponding to each target axis according to the motor speed of each target axis, the current tension between the target axes and the set tension safety range so that the tension between the target axes is within the set tension safety range, the PID adjustment compensation module is used to: if the tension between the current target axes is not within the set tension safety range, control the speed of the servo motor corresponding to the current target axis through a PID controller.
3. The tension optimization control system of the multi-axis tungsten wire drawing machine according to claim 2, characterized in that: In terms of controlling the rotation speed of the servo motor corresponding to the current target axis through a PID controller if the tension between the current target axes is not within the set tension safety range, the PID adjustment compensation module is used to: Determine whether the tension between the current target axes is within the set tension safety range. If the tension between the current target axes is less than the minimum tension limit, the speed of the servo motor corresponding to the current target axis is increased through the PID controller; if the tension between the current target axes is greater than the maximum tension limit, the speed of the servo motor corresponding to the current target axis is reduced. If the tension between the current target axes is not less than the minimum tension limit and not greater than the maximum tension limit, the speed of the servo motor corresponding to the current target axis will not be adjusted; the minimum tension limit and the maximum tension limit are the lower limit and upper limit of the set tension safety range.
4. The tension optimization control system of the multi-axis tungsten wire drawing machine according to claim 1, characterized in that: The mold core is diamond polycrystal.
5. A tension optimization control method for a multi-axis tungsten wire drawing machine based on the tension optimization control system of the multi-axis tungsten wire drawing machine according to claim 1, characterized in that: The tension optimization control method of the multi-axis tungsten wire drawing machine includes: The linear speed ratio of the tungsten wire after passing through each die is calculated based on the die hole diameters of all the dies; The linear velocity ratio of the tungsten wire after passing through each die is determined as the linear velocity ratio of the tungsten wire passing through each target axis; The linear speed of the current tungsten wire passing through the unwinding shaft is calculated according to the initial diameter of the unwinding shaft, the number of turns of each layer of tungsten wire and the diameter of the bottom layer of the unwinding shaft; The linear speed of the tungsten wire passing through each target axis is calculated according to the linear speed of the current tungsten wire passing through the unwinding axis and the linear speed ratio of the tungsten wire passing through each target axis; the target axis is the unwinding axis, any level traction axis or the winding axis; The motor speed of each target axis is calculated according to the linear speed of the tungsten wire passing through each target axis, the speed ratio of the reducer corresponding to each target axis, and the diameter of the target axis at the point where the target axis contacts the tungsten wire; The speed of the servo motor corresponding to each target axis is PID-adjusted according to the motor speed of each target axis, the current tension between the target axes and the set tension safety range, so that the tension between the target axes is within the set tension safety range.