An automatic cutting device and method for steel wire production

Abstract

This invention discloses an automatic cutting device and method for steel wire production, belonging to the technical field of steel wire processing equipment. It includes a servo motor, a crank-slider mechanism, a tool holder slider, an electromechanical decoupling locking mechanism, a torque sensor, and a rotary encoder. The servo motor drives the crank-slider mechanism. The crank-slider mechanism includes a connecting rod, the output motion of which is transmitted to the tool holder slider. The electromechanical decoupling locking mechanism is located between the connecting rod and the tool holder slider, and is used to switch between a rigid locking state and a physically separated state. In the rigid locking state, the connecting rod and the tool holder slider are locked as a rigid unit to perform the cutting action. This invention maximizes the utilization of the cutting tool while preventing the degradation of steel wire cut quality due to excessive tool wear.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of steel wire processing equipment, in particular to an automatic cutting-off cutting device for steel wire production and a method thereof. BACKGROUND

[0002] In the existing automatic production of steel wire, the cutting device is the key equipment to ensure the size accuracy of finished products and the quality of the cut. In order to monitor the cutting process and judge whether the tool is worn, a sensor is usually used to measure the force generated during cutting. A common method is to install a torque sensor on the driving motor, such as a servo motor, or to install a force sensor on a specific component of the transmission mechanism to indirectly or directly obtain the size of the cutting force.

[0003] The existing technology has a common and difficult-to-solve core technical problem: the signal actually measured by the sensor is not the pure steel wire cutting force, but the sum of the cutting force and the friction and inertia force generated when the cutting mechanism moves. In the high-speed reciprocating cutting device, the transmission components such as crank, connecting rod, slider and bearing will generate significant and fluctuating friction and inertia force; this leads to the signal being seriously confused, and the real cutting force cannot be separated from the interference force of the mechanism itself.

[0004] This signal confusion directly leads to two main problems: first, the misjudgment of the tool wear state. When the total force value measured by the sensor rises, it cannot be accurately judged whether it is due to the increase of cutting force caused by dull tool or the increase of internal running resistance of the mechanism caused by poor equipment lubrication or component wear. This often causes the tool to be replaced too early, increasing production costs; or be replaced too late, causing quality defects such as burrs and deformation of the steel wire cut. Second, low process control accuracy. Since the real cutting force feedback cannot be obtained, when the hardness, diameter and other parameters of the incoming steel wire fluctuate slightly, the equipment cannot accurately adjust the cutting parameters such as speed and force to adapt to the changes, and it is difficult to always guarantee the best cutting quality and energy efficiency.

[0005] Therefore, there is an urgent need in the art for a technical solution that can effectively separate the cutting force from the internal resistance of the mechanism and realize accurate force monitoring and equipment state self-diagnosis.

[0006] The above information disclosed in the above background section is only used to strengthen the understanding of the background of the present disclosure, and therefore it can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0007] The purpose of the present application is to provide an automatic cutting-off cutting device for steel wire production and a method thereof to solve the problems raised in the above background.

[0008] The technical solution of the present application is as follows:

[0009] a servo motor, a crank slider mechanism, a tool holder slider, an electromechanical decoupling locking mechanism, a torque sensor and a rotary encoder;

[0010] The servo motor is configured to drive the crank slider mechanism.

[0011] The crank slider mechanism comprises a connecting rod, and an output motion of the connecting rod is transmitted to the tool holder slider.

[0012] The electromechanical decoupling locking mechanism is arranged between the connecting rod and the tool holder slider, and is configured to switch between a rigid locking state and a physically separated state.

[0013] In the rigid locking state, the connecting rod and the tool holder slider are locked as a rigid whole to perform a cutting action.

[0014] In the physically separated state, the connection between the connecting rod and the tool holder slider is released, so that the crank slider mechanism is operated in an empty load state.

[0015] The torque sensor and the rotary encoder are both arranged in the servo motor, and are configured to collect torque data and position data of the servo motor, respectively.

[0016] Preferably, the electromechanical decoupling locking mechanism comprises a positioning hole arranged in the tool holder slider and an electromechanical actuator assembly arranged at the end of the connecting rod.

[0017] The electromechanical actuator assembly comprises an electromagnetic solenoid, a spring and a locking pin driven by the electromagnetic solenoid and the spring.

[0018] When the electromagnetic solenoid is powered, the locking pin is driven to retract into the connecting rod, so that the mechanism is in the physically separated state.

[0019] When the electromagnetic solenoid is powered off, the spring drives the locking pin to extend and insert into the positioning hole, so that the mechanism is in the rigid locking state.

[0020] Preferably, the head of the locking pin and the entrance edge of the positioning hole are both provided with a guide chamfer.

[0021] Preferably, the control system further comprises a control system.

[0022] The servo motor, the torque sensor, the rotary encoder and the electromechanical decoupling locking mechanism are electrically connected to the control system.

[0023] Preferably, the control system further comprises a steel wire in-place sensor.

[0024] The steel wire in-place sensor is electrically connected to the control system, and is used to allow the control system to switch the electromechanical decoupling locking mechanism to the physically separated state when confirming that there is no steel wire in the cutting area.

[0025] An automatic cutting method for steel wire production, comprising:

[0026] A reference measurement step, the control system controls the electromechanical decoupling locking mechanism to switch to the physically separated state, and drives the servo motor to perform a preset idle motion, while synchronously collecting torque data and position data to generate a reference disturbance force-position curve;

[0027] A total measurement step, the control system controls the electromechanical decoupling locking mechanism to switch to the rigid locking state, and drives the servo motor to perform the preset motion to complete the steel wire cutting, while synchronously collecting torque data and position data to generate a total force-position curve;

[0028] A data processing step, the control system takes the position data as a reference, subtracts the total force-position curve from the reference disturbance force-position curve to separate a pure actual cutting force-position curve.

[0029] Preferably, it further comprises a tool life monitoring step;

[0030] The control system extracts the characteristic value of the actual cutting force-position curve, and compares it with a preset wear threshold to determine whether the tool is worn.

[0031] Preferably, it further comprises an equipment state diagnosis step;

[0032] The control system performs trend analysis on the periodically collected reference disturbance force-position curve to determine whether the transmission components of the device are worn or poorly lubricated.

[0033] Preferably, it further comprises an adaptive closed-loop control step;

[0034] The control system automatically adjusts the motion parameters of the servo motor during the next cutting according to the currently calculated actual cutting force-position curve.

[0035] Preferably, it further comprises a incoming material quality monitoring step;

[0036] The control system monitors the batch fluctuation of the actual cutting force-position curve when the tool is new to determine whether the physical parameters of the incoming steel wire are abnormal.

[0037] The present application provides an automatic cutting device and method for steel wire production by improvement, compared with the prior art, has the following improvements and advantages:

[0038] 1. Achieved ultra-high precision tool life monitoring; the pure actual cutting force-position curve obtained through data processing steps has completely stripped off the interference force fluctuations caused by equipment lubrication, component gap changes, etc.; any sustained increase in its value can be attributed to tool wear with high confidence; this enables the control system to determine the tool state based on an extremely accurate wear threshold, maximizing tool value while eliminating the problem of reduced steel wire quality due to excessive tool wear;

[0039] 2. Created a new dimension of predictive maintenance for the health status of the equipment itself; the baseline interference force-position curve obtained in the baseline measurement step becomes a unique data for quantifying the running state of the transmission components; the periodic trend analysis of the control system on this curve can accurately identify early wear or poor lubrication of the transmission components; this capability enables maintenance work to upgrade from passive breakdown maintenance or fixed period maintenance to predictive maintenance based on actual state, effectively avoiding production losses caused by unplanned downtime;

[0040] 3. Built an adaptive closed-loop control system based on real force feedback; the control system can automatically adjust the motion parameters of the servo motor for the next cut based on the actual cutting force-position curve calculated in real time; when the incoming steel wire hardness fluctuates, causing an increase in cutting force, the system can actively optimize the motion curve to ensure constant cutting quality; this adaptive closed-loop control capability enables the device to dynamically adapt to changes in process conditions and stabilize product quality at the optimal level;

[0041] 4. Online incoming material quality monitoring function is given to the device; under the condition that the tool is new, batch fluctuations in the actual cutting force-position curve directly map the abnormalities of the incoming steel wire physical parameters; this function enables the cutting device itself to serve as a quality detection instrument, providing immediate and quantitative decision-making basis for upstream quality control in the entire production chain, improving the overall quality control level of the whole process. BRIEF DESCRIPTION OF DRAWINGS

[0042] The application will be further explained in conjunction with the drawings and examples:

[0043] Figure 1 is a schematic diagram of the rigid locking working state structure of the device;

[0044] Figure 2 is a schematic diagram of the physical separation state structure of the device;

[0045] Figure 3 is a schematic diagram of the cross-sectional connection structure of the electrolytic decoupling locking mechanism;

[0046] Figure 4is a schematic diagram of the process structure of the method of the present application;

[0047] In the figure: 100, servo motor; 200, crank slider mechanism; 210, connecting rod; 300, tool holder slider; 400, electromechanical decoupling locking mechanism; 410, positioning hole; 420, electromechanical actuator assembly; 421, electromagnetic solenoid; 422, spring; 423, locking pin; 5, torque sensor; 6, rotary encoder. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical scheme and advantages of the present application more clear and obvious, the present application is further described in detail below in combination with specific embodiments.

[0049] Embodiment 1

[0050] Please refer to Figures 1-3 The present application provides an automatic cutting device for steel wire production, comprising:

[0051] The servo motor 100, the crank slider mechanism 200, the tool holder slider 300, the electromechanical decoupling locking mechanism 400, the torque sensor 5 and the rotary encoder 6;

[0052] The servo motor 100 is used to drive the crank slider mechanism 200;

[0053] The crank slider mechanism 200 includes a connecting rod 210, and the output motion of the connecting rod 210 is transmitted to the tool holder slider 300;

[0054] The electromechanical decoupling locking mechanism 400 is arranged between the connecting rod 210 and the tool holder slider 300, and is used to switch between a rigid locking state and a physical separation state;

[0055] In the rigid locking state, the connecting rod 210 and the tool holder slider 300 are locked as a rigid whole to perform a cutting action;

[0056] In the physical separation state, the connection between the connecting rod 210 and the tool holder slider 300 is released, so that the crank slider mechanism 200 runs empty;

[0057] The torque sensor 5 and the rotary encoder 6 are both arranged in the servo motor 100, and are used to collect torque data and position data of the servo motor 100, respectively;

[0058] The present technology provides an automatic cutting device for steel wire production; the cutting device in the prior art measures the cutting force through a sensor, and the measured signal is a mixed total of the actual cutting force and interference forces such as friction force and inertial force generated by the movement of the cutting mechanism itself, which leads to the inability to accurately judge the tool wear state or to perform precise process control; the present technical scheme aims to solve this problem;

[0059] In the embodiment, the power source of the device is a servo motor 100, and the rotary motion is converted into the reciprocating linear motion required by the tool holder slider 300 through a crank slider mechanism 200; the servo motor 100 is integrally provided with a torque sensor 5 and a rotary encoder 6; the torque sensor 5 is used to measure the total torque output by the servo motor 100, which can be converted into the force applied to drive the entire transmission chain; the rotary encoder 6 is used to collect the real-time rotary position of the servo motor 100 with high precision, which corresponds to the accurate position of the tool holder slider 300 in the reciprocating stroke;

[0060] The core technical feature of the embodiment is that an electromechanical decoupling locking mechanism 400 is arranged between the output connecting rod 210 of the crank slider mechanism 200 and the tool holder slider 300; the mechanism is not a traditional rigid fixed connection, but has two working states that can be switched by external control; the first state is a rigid locking state, in which the mechanism firmly locks the connecting rod 210 and the tool holder slider 300 as a rigid whole, so that the servo motor 100 can drive the tool holder slider 300 to perform the cutting action on the steel wire; in this process, the torque sensor 5 measures the total force including the cutting force and the internal interference force of the mechanism; the second state is a physical separation state, in which the mechanism releases the connection between the connecting rod 210 and the tool holder slider 300, so that they are physically separated; at this time, the servo motor 100 drives the crank slider mechanism 200 and the connecting rod 210 to perform the same no-load motion as in cutting, but the motion will not be transmitted to the tool holder slider 300; in this process, the torque sensor 5 measures the baseline interference force generated purely by the friction and inertia of the transmission components; through the switching of the two states and the corresponding data collection, a physical basis is provided for the subsequent accurate separation of the pure cutting force.

[0061] The electromechanical decoupling locking mechanism 400 includes a positioning hole 410 arranged on the tool holder slider 300 and an electromechanical actuator assembly 420 arranged at the end of the connecting rod 210;

[0062] The electromechanical actuator assembly 420 includes an electromagnetic solenoid 421, a spring 422, and a lock pin 423 driven by the electromagnetic solenoid 421 and the spring 422;

[0063] When the electromagnetic solenoid 421 is powered on, the lock pin 423 is driven to retract into the connecting rod 210, so that the mechanism is in a physically separated state;

[0064] When the electromagnetic solenoid 421 is powered off, the spring 422 drives the lock pin 423 to extend and insert into the positioning hole 410, so that the mechanism is in a rigid locking state;

[0065] To achieve the above-mentioned two state switching, the specific structure of the electromechanical decoupling locking mechanism 400 is defined; at a specific position of the tool holder slide 300, a precisely machined positioning hole 410 is opened; at the end of the connecting rod 210 corresponding to the positioning hole 410, an electromechanical actuator assembly 420 is integrated;

[0066] The electromechanical actuator assembly 420 is composed of a push-pull electromagnetic solenoid 421, a compression spring 422 and a telescopic locking pin 423; the extension and retraction of the locking pin 423 are driven by the electromagnetic solenoid 421 and the spring 422; when it is needed to make the device enter the physical separation state to measure the reference disturbance force, the external control system supplies power to the electromagnetic solenoid 421; after power supply, the electromagnetic force generated will overcome the pre-tightening force of the spring 422, pull out the locking pin 423 from the positioning hole 410 and completely retract it to the inside of the connecting rod 210, thus releasing the locking of the connecting rod 210 and the tool holder slide 300;

[0067] When it is needed to make the device enter the rigid locking state to perform the cutting task, the control system disconnects the power supply to the electromagnetic solenoid 421; after the electromagnetic force disappears, the spring 422 which has been compressed in advance releases its elastic force, pushes the locking pin 423 to extend out of the end of the connecting rod 210 and accurately inserts it into the positioning hole 410 on the tool holder slide 300; through the mechanical engagement of the locking pin 423 and the positioning hole 410, the connecting rod 210 and the tool holder slide 300 are locked as a rigid whole; this design is a fail-safe structure, that is, in the case of accidental power failure, the mechanism will automatically be in the locked state capable of performing the cutting task, ensuring the continuity of production.

[0068] The head of the locking pin 423 and the entrance edge of the positioning hole 410 are provided with guide chamfers;

[0069] In order to ensure the reliability and smoothness of the electromechanical decoupling locking mechanism 400 in the process of long-term, high-speed and frequent mode switching, the details of the locking pin 423 and the positioning hole 410 are optimized; guide chamfers or round corners are machined on the head of the locking pin 423, that is, the part that enters the positioning hole 410 first, and on the entrance edge of the positioning hole 410;

[0070] The design of the guide chamfer has clear technical effects; during the process of the locking pin 423 extending from the retracted state to insert into the positioning hole 410, the guide chamfer plays the role of automatic alignment and guidance; even if there is a slight positional deviation between the end of the connecting rod 210 and the tool holder slider 300 due to high-speed movement or vibration, the chamfer structure can ensure that the locking pin 423 smoothly slides into the positioning hole 410, avoiding the occurrence of jamming or impact due to misalignment; similarly, when the locking pin 423 is withdrawn from the positioning hole 410, this structure can also reduce friction, making the unlocking process more rapid; this design improves the fault tolerance of the mechanism and the reliability of the action, prolonging the service life of the locking pin 423 and the positioning hole 410.

[0071] Further comprising a control system;

[0072] The servo motor 100, the torque sensor 5, the rotary encoder 6, and the electromechanical decoupling locking mechanism 400 are electrically connected to the control system;

[0073] The embodiment adds a control system to the device; the control system is the center of the device's self-diagnosis and precise force control functions; in terms of electrical connections, the servo motor 100, the torque sensor 5 and the rotary encoder 6 installed on the servo motor 100, and the electromechanical decoupling locking mechanism 400 for state switching, are all electrically connected to the control system;

[0074] The functions of the control system include: sending motion control instructions to the servo motor 100 to drive it to move according to the preset speed, acceleration, and travel curve; receiving and processing real-time data streams from the torque sensor 5 and the rotary encoder 6; and sending power-on or power-off instructions to the electromagnetic solenoid 421 in the electromechanical decoupling locking mechanism 400 to control its switching between the rigid locking state and the physically separated state; the control system integrates data acquisition, motion control, and logical decision-making functions, and is the hardware basis for subsequent measurement, calculation, and diagnosis methods.

[0075] Further comprising a steel wire presence sensor;

[0076] The steel wire presence sensor is electrically connected to the control system, and is used to allow the control system to switch the electromechanical decoupling locking mechanism 400 to the physically separated state when it confirms that there is no steel wire in the cutting area;

[0077] To further improve the safety of the device's operation and the accuracy of the measurement, the embodiment adds a steel wire presence sensor; the sensor is installed in the cutting area to detect whether there is a steel wire in the cutting position; the steel wire presence sensor is also electrically connected to the control system;

[0078] The technical effect is to realize a safety interlocking logic; the control system is preprogrammed to allow the execution of the instruction to switch the electromechanical decoupling locking mechanism 400 to the physically separated state only when a signal is received from the steel wire in place sensor indicating that the cutting area is free of steel wire; the purpose of this design is to ensure that the no-load operation in the decoupling diagnosis mode does not interfere with the steel wire, thereby avoiding potential damage to the equipment, the cutting tool or the steel wire; at the same time, this also ensures that the measurement signal is not contaminated by accidental touching of the steel wire when the reference interference force measurement is performed, ensuring the purity of the reference data.

[0079] Embodiment 2

[0080] Please refer to Figure 4 An automatic cutting method for steel wire production, comprising:

[0081] A reference measurement step, the control system controls the electromechanical decoupling locking mechanism 400 to switch to the physically separated state, and drives the servo motor 100 to execute a pre-set no-load movement, while synchronously collecting torque data and position data to generate a reference interference force-position curve;

[0082] A total measurement step, the control system controls the electromechanical decoupling locking mechanism 400 to switch to the rigidly locked state, and drives the servo motor 100 to execute a pre-set movement to complete the steel wire cutting, while synchronously collecting torque data and position data to generate a total force-position curve;

[0083] A data processing step, the control system takes the position data as the reference, subtracts the reference interference force-position curve from the total force-position curve to separate out a pure actual cutting force-position curve;

[0084] The present technology provides an automatic cutting method for steel wire production, which realizes the accurate separation of the actual cutting force through defined specific steps;

[0085] A reference measurement step; the control system issues an instruction to switch the electromechanical decoupling locking mechanism 400 to the physically separated state; in this state, the connection between the connecting rod 210 and the tool holder slider 300 is released; then, the control system drives the servo motor 100 to execute a pre-set no-load movement, the stroke, speed and acceleration curve of which are completely consistent with the movement curve during normal cutting; in this process, the control system synchronously collects torque data and position data from the torque sensor 5 and the rotary encoder 6 at a high sampling rate, and processes them to generate a reference interference force-position curve reflecting the running resistance of the mechanism itself;

[0086] The total measurement step; after the reference measurement is completed, the control system controls the electromechanical decoupling locking mechanism 400 to switch to the rigid locking state, so that the connecting rod 210 is locked with the tool holder slider 300; then, the servo motor 100 is driven to perform a normal steel wire cutting action with the same preset motion curve; in this process, the control system also synchronously collects torque and position data to generate a total force-position curve reflecting the total force;

[0087] The data processing step; the control system uses the high-precision position data as the alignment reference, subtracts the total force-position curve obtained in the total measurement step from the reference interference force-position curve obtained in the reference measurement step at each corresponding position point; the result of the operation is a pure actual cutting force-position curve, which has completely eliminated the interference caused by factors such as mechanism friction and inertial force, and provides a reliable data basis for subsequent accurate analysis and control;

[0088] It also includes a tool life monitoring step;

[0089] The control system extracts the characteristic value of the actual cutting force-position curve and compares it with a preset wear threshold to determine whether the tool is worn;

[0090] The embodiment adds a tool life monitoring step based on the above method; this step uses the pure actual cutting force-position curve separated in the data processing step; since this curve eliminates the interference caused by changes in the device's own state, such as lubrication conditions, its changes can more truly reflect the state of the tool;

[0091] In specific implementation, the control system will extract the characteristic value of each actual cutting force-position curve calculated; the characteristic value can be the peak force of the curve, the area under the curve, i.e., the cutting work or the average force, or other parameters that can quantify the cutting difficulty; the system compares the extracted characteristic value with the preset wear threshold; this threshold is set according to experimental data or experience and represents the critical state of tool wear that requires replacement;

[0092] The preset wear threshold is a critical parameter for quantifying the degree of tool wear, which physically represents the state at which the tool cutting performance begins to decline significantly or the steel wire cut quality may be problematic; this threshold is usually determined by cutting a new tool several times and combining the technical parameters provided by the tool manufacturer to determine the force value or cutting work value above the peak value of the normal cutting force curve that has statistical significance; it can also be adjusted according to the experience data of the actual production requirements for cut quality; when the characteristic value of the actual cutting force-position curve calculated in real time, such as the peak force or the cutting work, is consistently higher than the preset wear threshold, the system will trigger the tool wear alarm or automatic stop and replace the tool instruction to prevent the production of substandard products;

[0093] When the detected characteristic value continuously exceeds the wear threshold, the control system can determine that the tool has been significantly worn, and can automatically issue a warning or instruction to replace the tool; in this way, the tool life can be accurately managed.

[0094] It also includes a device state diagnosis step;

[0095] The control system performs trend analysis on the periodically collected reference disturbance force-position curve to determine whether the transmission components of the device are worn or poorly lubricated;

[0096] The embodiment further adds a device state diagnosis step; unlike the tool life monitoring using the cutting force curve, this step uses the reference disturbance force-position curve collected in the reference measurement step; this curve directly reflects the force required by the drive system to overcome its internal friction and inertia force, and is a direct indicator of the health of the transmission components;

[0097] The step aims to achieve predictive maintenance of the transmission components of the device by trend analysis of the reference disturbance force-position curve, thereby avoiding unplanned downtime; the analysis logically includes a historical data trend model; the model receives periodically collected reference disturbance force-position curves as input and stores historical data of these curves; the model extracts key characteristic values of each curve, such as peak value, area under the curve, friction work of a reciprocating stroke or force value at a specific position, and arranges these characteristic values in time sequence; the model as a whole represents the physical wear or lubrication degradation process of the mechanical system over time. As the transmission components, such as bearings and sliding rails, wear out or the lubricating oil performance decreases, the internal friction will gradually increase. This increase in friction directly leads to a slow and continuous upward trend in the overall amplitude of the reference disturbance force-position curve or its characteristic values. The model monitors this trend and converts the invisible physical degradation process into quantifiable data, thereby achieving early warning;

[0098] The control system will periodically, for example, every 100 cuts, perform the reference measurement step and store the generated reference disturbance force-position curve; by trend analysis of these curves stored in time sequence, such as analyzing the trend of their amplitude or integral value, the health status of the device can be determined; if it is observed that the overall amplitude of the curve shows a slow and continuous upward trend over time, it indicates that the transmission components of the device, such as bearings, sliding rails, etc. may have worn out or lubrication problems; based on this analysis result, the system can issue a predictive maintenance warning in advance to guide personnel to repair the equipment before it fails seriously, thereby avoiding unplanned downtime.

[0099] An adaptive closed-loop control step is also included;

[0100] The control system automatically adjusts the motion parameters of the servo motor 100 for the next cutting according to the current calculated actual cutting force-position curve;

[0101] This embodiment adds an adaptive closed-loop control step, enabling the device to actively optimize the cutting process according to real-time cutting force feedback; after completing a cut and obtaining a pure actual cutting force-position curve through the data processing step, the control system analyzes this curve;

[0102] If the system analysis finds that the characteristic value of the current cutting force, such as the peak value, deviates from the set process target range, for example, the cutting force is too large due to the batch of incoming steel wire being too hard, the control system will automatically adjust the motion parameters of the servo motor 100 for the next cutting; adjustable parameters include but are not limited to reducing the speed during the cutting-in phase, changing the acceleration curve, or increasing the motor output torque limit, etc.; through this dynamic adjustment based on real-time force feedback, it can ensure that even under conditions of fluctuations in the physical parameters of the incoming material, the cutting quality, such as the flatness of the cut, can remain stable, while also protecting the tool and reducing equipment impact, forming a precise force control closed-loop system.

[0103] A material quality monitoring step is also included;

[0104] The control system monitors the batch fluctuations in the actual cutting force-position curve when the tool is new to determine whether there are abnormalities in the physical parameters of the incoming steel wire;

[0105] This embodiment also adds a material quality monitoring step; this step is executed on the premise that the cutting tool is in good condition or is new, to exclude the influence of tool wear on cutting force; under this condition, the changes in the pure actual cutting force-position curve mainly reflect the changes in the physical parameters of the material being cut;

[0106] The control system will continuously monitor the calculated actual cutting force-position curve during the production cycle after replacing a new tool; if the system detects that the characteristic values of this curve, such as the peak value and cutting power, have significant batch fluctuations, i.e., there are systematic differences in the cutting force curves corresponding to different batches of steel wire, it can be determined that there are abnormalities or instability in the physical parameters of the incoming steel wire, such as diameter, hardness, material composition, etc.; this monitoring result can be recorded and output, providing immediate and quantitative data support for quality control of the upstream raw material supply chain, thereby achieving quality control of the entire production chain.

[0107] It should be noted that the above examples are only used to illustrate the technical solutions of the present application but not limit the present application. Although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced, without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. An automatic cutting-off cutting device for steel wire production, characterized by, Comprise: A servo motor (100), a crank slider mechanism (200), a tool holder slider (300), an electromechanical decoupling locking mechanism (400), a torque sensor (5) and a rotary encoder (6); The servo motor (100) is used to drive the crank slider mechanism (200); The crank slider mechanism (200) comprises a connecting rod (210), and the output motion of the connecting rod (210) is transmitted to the tool holder slider (300); The electromechanical decoupling locking mechanism (400) is arranged between the connecting rod (210) and the tool holder slider (300) and is used to switch between a rigid locking state and a physically separated state; In the rigid locking state, the connecting rod (210) and the tool holder slider (300) are locked as a rigid whole to perform a cutting action; In the physically separated state, the connection between the connecting rod (210) and the tool holder slider (300) is released, so that the crank slider mechanism (200) runs empty; The torque sensor (5) and the rotary encoder (6) are arranged on the servo motor (100) and are used to collect torque data and position data of the servo motor (100), respectively; The electromechanical decoupling locking mechanism (400) comprises a positioning hole (410) arranged on the tool holder slider (300) and an electromechanical actuator assembly (420) arranged at the end of the connecting rod (210); The electromechanical actuator assembly (420) comprises an electromagnetic solenoid (421), a spring (422) and a locking pin (423) driven by the electromagnetic solenoid (421) and the spring (422); When the electromagnetic solenoid (421) is energized, the locking pin (423) is driven to retract into the connecting rod (210), so that the mechanism is in the physically separated state; When the electromagnetic solenoid (421) is de-energized, the spring (422) drives the locking pin (423) to extend and insert into the positioning hole (410), so that the mechanism is in the rigid locking state.

2. The automatic cutting-off and cutting device for steel wire production according to claim 1, characterized in that, The head of the locking pin (423) and the entrance edge of the positioning hole (410) are both provided with a guide chamfer.

3. The automatic cutting-off and cutting device for steel wire production according to claim 2, characterized in that, Further comprising a control system; The servo motor (100), the torque sensor (5), the rotary encoder (6) and the electromechanical decoupling locking mechanism (400) are electrically connected to the control system.

4. The automatic cutting-off and cutting device for steel wire production according to claim 3, characterized in that, Further comprising a steel wire in-place sensor; The steel wire in-place sensor is electrically connected to the control system and is used to allow the control system to switch the electromechanical decoupling locking mechanism (400) to the physically separated state when it is confirmed that there is no steel wire in the cutting area.

5. An automatic cutting-off cutting method for steel wire production, based on the automatic cutting-off cutting device for steel wire production according to claim 4, characterized by, Comprise: A reference measurement step, the control system controls the electromechanical decoupling locking mechanism (400) to switch to the physically separated state, drives the servo motor (100) to perform a preset empty load motion, and synchronously collects torque data and position data to generate a reference disturbance force-position curve; The control system controls the electromechanical decoupling locking mechanism (400) to switch to a rigid locking state, and drives the servo motor (100) to perform the preset motion to complete the wire cutting, while synchronously collecting torque data and position data to generate a total force-position curve; The control system subtracts the total force-position curve from the reference disturbance force-position curve based on the position data to separate an actual cutting force-position curve.

6. An automatic cutting-off and cutting method for a steel wire production according to claim 5, characterized in that, The control system further includes a tool life monitoring step; The control system extracts characteristic values of the actual cutting force-position curve and compares them with a preset wear threshold to determine whether the tool is worn.

7. The automatic cutting method for a steel wire according to claim 5, wherein The control system further includes a device state diagnosis step; The control system performs trend analysis on the periodically collected reference disturbance force-position curve to determine whether the transmission components of the device are worn or poorly lubricated.

8. The automatic cutting method for a steel wire according to claim 5, wherein The control system further includes an adaptive closed-loop control step; The control system automatically adjusts the motion parameters of the servo motor (100) for the next cutting based on the currently calculated actual cutting force-position curve.

9. The automatic cutting method for a steel wire according to claim 5, wherein The control system further includes a feedstock quality monitoring step; The control system monitors batch fluctuations in the actual cutting force-position curve when the tool is new to determine whether the physical parameters of the incoming wire are abnormal.

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