Disclosure of Invention
Therefore, the invention provides a punch fault monitoring system based on the Internet of things, which is used for solving the problems of monitoring stability and accuracy reduction caused by unstable positions of an original workpiece due to overlarge vibration amplitude of the original workpiece and overlarge opening quantity of clamping points of a clamping and fixing unit caused by overlarge punching speed of a cutting unit in the prior art.
In order to achieve the above object, the present invention provides a punch fault monitoring system based on internet of things, comprising: the stamping module is used for processing the original workpiece into a finished workpiece and comprises a cutting unit used for cutting the original workpiece, a hydraulic unit connected with the cutting unit and used for providing cutting power, a clamping and fixing unit arranged below the cutting unit and used for fixing the position of the original workpiece, and a temperature sensor arranged below the cutting unit; the operation stability monitoring module is connected with the stamping module and is used for adjusting the stamping speed of the cutting unit to output a first corresponding stamping speed or sending a first control signal for monitoring the state of the workpiece when the punch press is judged to be in a fluctuation operation state according to the variance of the weights of a plurality of finished workpieces; the workpiece state monitoring module is respectively connected with the stamping module and the operation stability monitoring module and is used for adjusting the opening quantity of clamping points of the clamping and fixing unit when the workpiece is in an unbalanced operation state according to the response to the first control signal and the average pattern areas of a plurality of finished workpieces with the same patterns; the punching state monitoring module is respectively connected with the punching module and the operation stability monitoring module and is used for adjusting the first corresponding punching speed to output a second corresponding punching speed or sending a second control signal for monitoring the monitoring calibration when the output of the first corresponding punching speed is finished and the punching is judged to be in an invalid operation state according to the length ratio of the rough pattern edge of the finished workpiece; and the monitoring and calibrating module is respectively connected with the stamping module and the stamping state monitoring module and is used for adjusting the supply speed of the hydraulic oil in the hydraulic unit when responding to the second control signal and judging that the temperature sensor is in a deviation running state according to the vibration frequency of the punching machine.
Further, the punching module further includes:
the visual sensor is arranged at the output end of the punch press and used for detecting the area of the pattern of the finished workpiece and the length of the edge of the rough pattern;
and the vibration sensor is connected with the punch press and is used for detecting the vibration frequency of the punch press.
Further, the operation stability monitoring module includes:
the weight sensor is arranged at the output end of the stamping module and used for detecting the weight of a plurality of finished workpieces;
the weight signal processing component is in wireless connection with the weight sensor and is used for calculating the variance of the weights of the finished workpieces according to the weights of the finished workpieces;
the first judging component is connected with the weight signal processing component and is used for judging that the operation stability of the punch press is lower than an allowable range when the variance of the weights of a plurality of finished workpieces triggers a preset first variance condition or triggers a preset second variance condition;
the preset first variance condition is that the variance of the weights of the finished workpieces is larger than the preset first variance and smaller than or equal to the preset second variance; the preset second variance condition is that the variance of the weights of the finished workpieces is larger than the preset second variance; the preset first variance is smaller than the preset second variance.
Further, the workpiece condition monitoring module further comprises a second decision component coupled to the vision sensor, wherein,
the second judging component is used for calculating the average area of the same patterns according to the areas of the same patterns of the plurality of finished workpieces detected by the visual sensor, primarily judging that the original workpiece is in an unbalanced running state when the variance of the weights of the plurality of finished workpieces triggers a preset first variance condition independently, and secondarily judging that the original workpiece is in an unbalanced running state when the average area of the same patterns triggers a preset area condition, wherein the unbalanced running state is that the surface balance degree of the original workpiece is lower than an allowable range;
the preset area condition is that the average area of the patterns of the finished workpieces with the same patterns is larger than the preset area.
Further, the punch condition monitoring module includes a third decision component coupled to the vision sensor, wherein,
the third judging component is used for calculating the length ratio of the rough pattern edge of the finished workpiece according to the length of the rough pattern edge of the finished workpiece detected by the visual sensor, and judging that the stamping is in an invalid operation state when the length ratio of the rough pattern edge of the finished workpiece triggers a first condition and a preset first duty ratio condition or triggers the first condition and a preset second duty ratio condition at the same time, wherein the invalid operation state is that the stamping effectiveness is lower than an allowable range;
The preset first duty ratio condition is that the length duty ratio of the rough pattern edge of the finished workpiece is larger than the preset first duty ratio and smaller than or equal to the preset second duty ratio; the preset second duty ratio condition is that the length duty ratio of the rough pattern edge of the finished workpiece is larger than the preset second duty ratio; the first condition is that the operation stability monitoring module completes the initial adjustment of the punching speed of the cutting unit.
Further, the monitoring calibration module includes a fourth decision component coupled to the vibration sensor, wherein,
the fourth judging component is used for primarily judging that the temperature sensor is in a deviation running state when the length ratio of the edge of the rough pattern of the finished workpiece triggers a preset second ratio condition, and secondarily judging that the temperature sensor is in the deviation running state when the vibration frequency of the punch triggers a preset frequency condition, wherein the deviation running state is that the monitoring accuracy of the temperature sensor is lower than an allowable range;
the preset frequency condition is that the vibration frequency of the punch is larger than the preset frequency.
Further, the operation stability monitoring module further comprises a punching speed adjusting component connected with the first judging component and used for primarily adjusting the punching speed of the cutting unit according to the difference value of the weight variance of the finished workpieces and the preset second variance to output a first corresponding punching speed when the preset second variance condition is triggered independently, wherein the first corresponding punching speed is inversely proportional to the difference value of the weight variance of the finished workpieces and the preset second variance.
Further, the workpiece state monitoring module further includes a number adjusting component connected to the second determining component, and the number adjusting component is configured to adjust the number of opened clamping points of the clamping fixing unit according to a difference value between an average pattern area and a preset area of a plurality of finished workpieces with the same pattern when the preset area condition is triggered, where the number of opened clamping points of the clamping fixing unit is proportional to the difference value between the average pattern area and the preset area of the plurality of finished workpieces with the same pattern.
Further, the stamping state monitoring module further comprises a stamping speed secondary adjusting component connected with the third judging component and used for adjusting the first corresponding stamping speed according to the difference value between the length ratio of the rough pattern edge of the finished workpiece and the preset first ratio to output a second corresponding stamping speed when the preset first ratio condition is triggered, and the length ratio of the second corresponding stamping speed to the rough pattern edge of the finished workpiece is in direct proportion to the difference value between the preset first ratio.
Further, the monitoring and calibrating module further comprises a supply speed adjusting component connected with the fourth judging component and used for adjusting the supply speed of the hydraulic oil in the hydraulic unit according to the difference value between the vibration frequency of the punching machine and the preset frequency when the preset frequency condition is triggered, and the supply speed of the hydraulic oil in the hydraulic unit is in direct proportion to the difference value between the vibration frequency of the punching machine and the preset frequency.
Compared with the prior art, the system has the beneficial effects that by arranging the punching module, the operation stability monitoring module, the workpiece state monitoring module, the punching state monitoring module and the monitoring calibration module, the adjusting module carries out primary adjustment on the punching speed of the cutting unit when the operation stability of the punching machine is lower than an allowable range, the influence of the stability reduction of fault monitoring caused by overlarge punching speed of the cutting unit due to inaccurate adjustment on the punching speed of the cutting unit is reduced, the opening quantity of the clamping points of the clamping fixing unit is adjusted according to the average area of patterns of a plurality of finished workpieces with the same patterns, the influence of the accuracy reduction of fault monitoring caused by the opening quantity of the clamping points of the clamping fixing unit due to the fact that the opening quantity of the clamping points of the clamping fixing unit is too small is reduced, the influence of the accuracy reduction of the punching speed of the cutting unit due to the fact that the punching speed of the cutting unit is too small due to the inaccurate adjustment on the length of the edge of the rough pattern of the finished workpiece is reduced, and the influence of the hydraulic oil in the accuracy reduction of the hydraulic oil supply to the accuracy reduction of the hydraulic oil in the hydraulic oil supply to the accuracy reduction of the accuracy monitoring speed due to the hydraulic oil in the hydraulic oil supply to the accuracy reduction of the accuracy in the adjustment in the hydraulic oil in the monitoring unit according to the frequency of the punching machine is reduced.
Further, the system judges the running stability of the punch by setting the preset first variance and the preset second variance, reduces the influence of the fault monitoring accuracy reduction caused by inaccurate judgment of the running stability of the punch, and further improves the stability and the accuracy of the fault monitoring.
Furthermore, the system of the invention carries out secondary judgment on the surface balance degree of the original workpiece under the condition of the preset area by setting the preset area, thereby reducing the influence of the reduction of the stability of fault monitoring caused by inaccurate secondary judgment on the surface balance degree of the original workpiece.
Furthermore, the system provided by the invention judges the effectiveness of stamping under the first condition by setting the preset first duty ratio and the preset second duty ratio, so that the influence of the reduction of the accuracy of fault monitoring caused by inaccurate judgment of the effectiveness of stamping is reduced.
Furthermore, the system of the invention carries out secondary judgment on the monitoring accuracy of the temperature sensor under the preset frequency condition by setting the preset frequency, thereby reducing the influence of the stability reduction of fault monitoring caused by inaccurate secondary judgment on the monitoring accuracy of the temperature sensor.
Furthermore, the system adjusts the stamping speed of the cutting unit under the preset second variance condition by setting the preset variance difference value, so that the influence of the reduction of the stability of fault monitoring caused by the overlarge vibration amplitude of the original workpiece during stamping due to the overlarge stamping speed of the cutting unit is reduced.
Furthermore, the system adjusts the opening quantity of the clamping points of the clamping and fixing unit under the preset area condition by setting the preset area difference value, so that the influence of the reduction of the accuracy of fault monitoring caused by unstable fixing degree of the original workpiece due to the fact that the opening quantity of the clamping points of the clamping and fixing unit is too small is reduced.
Furthermore, the system of the invention sets the preset duty ratio difference value, and secondarily adjusts the punching speed of the cutting unit under the preset first duty ratio condition, thereby reducing the influence of the reduction of the stability of fault monitoring caused by inaccurate cutting due to the too small punching speed of the cutting unit.
Furthermore, the system adjusts the supply speed of the hydraulic oil in the hydraulic unit under the preset frequency condition by setting the preset frequency difference value, reduces the influence of the reduction of the accuracy of fault monitoring caused by the overhigh vibration frequency of the punching machine due to the overlow supply speed of the hydraulic oil in the hydraulic unit, and further realizes the improvement of the stability and the accuracy of the fault monitoring.
Detailed Description
In order that the objects and advantages of the invention will become more apparent, the invention will be further described with reference to the following examples; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that, in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
Referring to fig. 1, fig. 2, fig. 3, and fig. 4, the overall structure block diagram of the punch fault monitoring system based on the internet of things, the specific structure block diagram of the punching module, the connection structure block diagram of the punching module connected with the operation stability monitoring module, and the connection structure block diagram of the punching module connected with the working state monitoring module according to the embodiment of the invention are shown respectively. The invention discloses a punch fault monitoring system based on the Internet of things, which comprises the following components:
the stamping module is used for processing the original workpiece into a finished workpiece and comprises a cutting unit used for cutting the original workpiece, a hydraulic unit connected with the cutting unit and used for providing cutting power, a clamping and fixing unit arranged below the cutting unit and used for fixing the position of the original workpiece, and a temperature sensor arranged below the cutting unit;
The operation stability monitoring module is connected with the stamping module and is used for adjusting the stamping speed of the cutting unit to output a first corresponding stamping speed or sending a first control signal for monitoring the state of the workpiece when the punch press is judged to be in a fluctuation operation state according to the variance of the weights of a plurality of finished workpieces;
the workpiece state monitoring module is respectively connected with the stamping module and the operation stability monitoring module and is used for adjusting the opening quantity of clamping points of the clamping and fixing unit when the workpiece is in an unbalanced operation state according to the response to the first control signal and the average pattern areas of a plurality of finished workpieces with the same patterns;
the punching state monitoring module is respectively connected with the punching module and the operation stability monitoring module and is used for adjusting the first corresponding punching speed to output a second corresponding punching speed or sending a second control signal for monitoring the monitoring calibration when the output of the first corresponding punching speed is finished and the punching is judged to be in an invalid operation state according to the length ratio of the rough pattern edge of the finished workpiece;
and the monitoring and calibrating module is respectively connected with the stamping module and the stamping state monitoring module and is used for adjusting the supply speed of the hydraulic oil in the hydraulic unit when responding to the second control signal and judging that the temperature sensor is in a deviation running state according to the vibration frequency of the punching machine.
Specifically, the cutting unit includes:
a cutter for cutting the original workpiece;
a cutter bracket connected with the cutter for supporting the cutter;
and the cutter library is arranged below the cutter bracket and is used for providing cutters of different models.
Specifically, the hydraulic unit includes:
the hydraulic cylinder is connected with the cutting unit and is used for providing power for cutting by the cutter;
the hydraulic pump is connected with the hydraulic cylinder and used for controlling the flow of hydraulic oil;
and the oil tank is connected with the hydraulic pump and used for storing hydraulic oil.
Specifically, the clamp fixing unit includes a fixing jig to fix a workpiece.
Specifically, the variance of the weights of the finished workpieces is the variance of the weights of the finished workpieces of the punch press detected by the weight sensor, and the method for calculating the variance of the weights of the finished workpieces is a conventional technical means well known to those skilled in the art, so the process of calculating the variance of the weights of the finished workpieces is not described herein.
Specifically, the calculation formula of the pattern average area of the finished workpieces with the same pattern is as follows:
，
wherein Z is the pattern average area of a plurality of finished products with the same pattern, xn is the pattern area of the nth finished product with the same pattern, n is the total number of the finished products with the same pattern, and n is a natural number greater than or equal to 1.
Specifically, the means for realizing the adjustment of the opening number of the clamping points of the clamping and fixing unit is to adjust the opening number of the fixing jigs of the clamping and fixing unit, and the clamping and fixing unit is also provided with a rotating assembly which is connected with the fixing jigs and is used for controlling the opening state of the fixing jigs by changing the rotating position of the fixing jigs.
In particular, the rotating assembly may be an electrically powered rotating shaft coupled to a stationary fixture.
Specifically, the calculation formula of the length ratio of the rough pattern edge of the finished workpiece is as follows:
，
wherein S is the length ratio of the rough pattern edge of the finished workpiece, E is the length of the rough pattern edge of the finished workpiece, and F is the total length of the pattern edge of the finished workpiece.
Specifically, when the noise of the pattern edge image on the finished workpiece is greater than the preset noise value, the pattern edge is a rough pattern edge.
According to the system, the punching module, the operation stability monitoring module, the workpiece state monitoring module, the punching state monitoring module and the monitoring calibration module are arranged, the adjusting module carries out primary adjustment on the punching speed of the cutting unit when the operation stability of the punching machine is lower than an allowable range, the influence of the stability reduction of fault monitoring caused by overlarge punching speed of the cutting unit due to inaccurate adjustment on the punching speed of the cutting unit is reduced, the opening quantity of the clamping points of the clamping fixing unit is adjusted according to the average pattern area of a plurality of finished workpieces with the same pattern, the influence of the accuracy reduction of the fault monitoring caused by the too small opening quantity of the clamping points of the clamping fixing unit due to inaccurate adjustment on the opening quantity of the clamping points of the clamping fixing unit is reduced, the influence of the accuracy reduction of the fault monitoring caused by the overlow punching speed of the cutting unit due to inaccurate adjustment on the punching speed of the cutting unit is reduced, and the accuracy of the stability reduction of the fault monitoring caused by inaccurate adjustment on the punching speed of the cutting unit due to the length of the edge of the rough pattern of the finished workpiece is reduced, and the accuracy of the influence of the accuracy reduction of the hydraulic oil supply of the fault monitoring caused by inaccurate adjustment on the punching speed of the cutting unit due to the hydraulic oil in the hydraulic oil supply speed of the hydraulic oil in the hydraulic unit is reduced according to the vibration frequency.
With continued reference to fig. 1, the stamping module further includes:
the visual sensor is arranged at the output end of the punch press and used for detecting the area of the pattern of the finished workpiece and the length of the edge of the rough pattern;
and the vibration sensor is connected with the punch press and is used for detecting the vibration frequency of the punch press.
With continued reference to fig. 2, the operation stability monitoring module includes:
the weight sensor is arranged at the output end of the stamping module and used for detecting the weight of a plurality of finished workpieces;
the weight signal processing component is in wireless connection with the weight sensor and is used for calculating the variance of the weights of the finished workpieces according to the weights of the finished workpieces;
the first judging component is connected with the weight signal processing component and is used for judging that the operation stability of the punch press is lower than an allowable range when the variance of the weights of a plurality of finished workpieces triggers a preset first variance condition or triggers a preset second variance condition;
the preset first variance condition is that the variance of the weights of the finished workpieces is larger than the preset first variance and smaller than or equal to the preset second variance; the preset second variance condition is that the variance of the weights of the finished workpieces is larger than the preset second variance; the preset first variance is smaller than the preset second variance.
Specifically, the variance of the weights of the finished workpieces is denoted as Q, the preset first variance is denoted as Q1, and q1=0.5 kg is set2 The second variance is preset to be Q2, and q2=0.6 kg is set2 The difference between the variance of the weights of the plurality of finished workpieces and the preset second variance is recorded as DeltaQ, and DeltaQ=Q-Q2 is set.
Specifically, the reset signal processing component is a program for analyzing and calculating signals sent by the weight sensor;
the first determination component is a program for determining the operation stability of the punching machine according to the calculation result.
According to the system, the operation stability of the punching machine is judged by setting the preset first variance and the preset second variance, so that the influence of the fault monitoring accuracy reduction caused by inaccurate judgment of the operation stability of the punching machine is reduced, and the stability and the accuracy of the fault monitoring are further improved.
With continued reference to fig. 2, the workpiece condition monitoring module further includes a second determination component coupled to the vision sensor, wherein,
the second judging component is used for calculating the average area of the same patterns according to the areas of the same patterns of the plurality of finished workpieces detected by the visual sensor, primarily judging that the original workpiece is in an unbalanced running state when the variance of the weights of the plurality of finished workpieces triggers a preset first variance condition independently, and secondarily judging that the original workpiece is in an unbalanced running state when the average area of the same patterns triggers a preset area condition, wherein the unbalanced running state is that the surface balance degree of the original workpiece is lower than an allowable range;
The preset area condition is that the average area of the patterns of the finished workpieces with the same patterns is larger than the preset area.
Specifically, the preset area is denoted as P1, and p1=0.15m is set2 The average pattern area of a plurality of finished workpieces with the same pattern is marked as P, the difference between the average pattern area of a plurality of finished workpieces with the same pattern and the preset area is marked as delta P, and delta P=P-P1 is set.
According to the system, the preset area is set, and the surface balance degree of the original workpiece is secondarily judged under the preset area condition, so that the influence of the reduction of the stability of fault monitoring caused by inaccurate secondary judgment of the surface balance degree of the original workpiece is reduced.
With continued reference to fig. 2, the punch condition monitoring module includes a third decision component coupled to the vision sensor, wherein,
the third judging component is used for calculating the length ratio of the rough pattern edge of the finished workpiece according to the length of the rough pattern edge of the finished workpiece detected by the visual sensor, and judging that the stamping is in an invalid operation state when the length ratio of the rough pattern edge of the finished workpiece triggers a first condition and a preset first duty ratio condition or triggers the first condition and a preset second duty ratio condition at the same time, wherein the invalid operation state is that the stamping effectiveness is lower than an allowable range;
The preset first duty ratio condition is that the length duty ratio of the rough pattern edge of the finished workpiece is larger than the preset first duty ratio and smaller than or equal to the preset second duty ratio; the preset second duty ratio condition is that the length duty ratio of the rough pattern edge of the finished workpiece is larger than the preset second duty ratio; the first condition is that the operation stability monitoring module completes the initial adjustment of the punching speed of the cutting unit.
Specifically, the first duty ratio is set to Y1, y1=0.3, the second duty ratio is set to Y2, y2=0.4, the length duty ratio of the rough pattern edge of the finished workpiece is set to Y, the difference between the length duty ratio of the rough pattern edge of the finished workpiece and the preset first duty ratio is set to Δy, and Δy=y-Y1 is set.
According to the system, the preset first duty ratio and the preset second duty ratio are set, so that the effectiveness of stamping is judged under the first condition, and the influence of the reduction of the accuracy of fault monitoring caused by inaccurate judgment of the effectiveness of stamping is reduced.
With continued reference to fig. 3, the monitoring calibration module includes a fourth decision component coupled to the vibration sensor, wherein,
the fourth judging component is used for primarily judging that the temperature sensor is in a deviation running state when the length ratio of the edge of the rough pattern of the finished workpiece triggers a preset second ratio condition, and secondarily judging that the temperature sensor is in the deviation running state when the vibration frequency of the punch triggers a preset frequency condition, wherein the deviation running state is that the monitoring accuracy of the temperature sensor is lower than an allowable range;
The preset frequency condition is that the vibration frequency of the punch is larger than the preset frequency.
Specifically, the preset frequency is denoted as R0, r0=60 Hz, the vibration frequency of the punch is denoted as R, the difference between the vibration frequency of the punch and the preset frequency is denoted as Δr, and Δr=r—r0 is set.
According to the system, the preset frequency is set, and the monitoring accuracy of the temperature sensor is subjected to secondary judgment under the preset frequency condition, so that the influence of stability reduction of fault monitoring caused by inaccurate secondary judgment of the monitoring accuracy of the temperature sensor is reduced.
With continued reference to fig. 4, the operation stability monitoring module further includes a stamping speed adjusting component connected to the first determining component, configured to perform initial adjustment on the stamping speed of the cutting unit according to a difference between a variance of weights of the plurality of finished workpieces and a preset second variance to output a first corresponding stamping speed when the preset second variance condition is triggered alone, where the variance of weights of the first corresponding stamping speed and the plurality of finished workpieces is inversely proportional to the difference between the preset second variance.
Specifically, the punching speed adjusting component adjusts the punching speed of the cutting unit to a first punching speed by using a preset second punching speed adjusting coefficient under the condition of a preset first difference value; the preset first variance difference condition is that the variance of the weights of the finished workpieces and the preset second variance are smaller than or equal to the preset variance difference;
The punching speed adjusting component adjusts the punching speed of the cutting unit to a second punching speed by using a preset first punching speed adjusting coefficient under the condition of a preset second variance difference value; the preset second variance difference condition is that the difference between the variances of the weights of the finished workpieces and the preset second variance is larger than the preset variance difference;
wherein the preset first punching speed adjustment coefficient is smaller than the preset second punching speed adjustment coefficient.
Specifically, the preset variance difference is denoted as Δq0, and Δq0=0.3 kg is set2 Presetting a first punching speed adjusting coefficient as alpha 1, presetting alpha 1 = 0.8, presetting a second punching speed adjusting coefficient as alpha 2, presetting alpha 2 = 0.9, setting the punching speed of a cutting unit as V, wherein 0 < alpha 1 < alpha 2 < 1, setting the adjusted first corresponding punching speed as V ', setting V' =V× (1+alpha i)/2, wherein alpha i is the preset ith punching speed adjusting coefficient, and setting i = 1,2.
According to the system, the preset variance difference value is set, and the stamping speed of the cutting unit is adjusted under the preset second variance condition, so that the influence of reduction of stability of fault monitoring caused by overlarge vibration amplitude of an original workpiece during stamping due to overlarge stamping speed of the cutting unit is reduced.
With continued reference to fig. 4, the workpiece state monitoring module further includes a number adjusting component connected to the second determining component, configured to adjust the number of open clamping points of the clamping fixing unit according to a difference between an average pattern area and a preset area of a plurality of finished workpieces with the same pattern when the preset area condition is triggered, where the number of open clamping points of the clamping fixing unit is proportional to the difference between the average pattern area and the preset area of the plurality of finished workpieces with the same pattern.
Specifically, the number adjusting component adjusts the opening number of the clamping points of the clamping and fixing unit to a first number by using a preset first number adjusting coefficient under the condition of a preset first area difference value; the preset first area difference value condition is that the difference value between the average pattern area and the preset area of a plurality of finished products with the same patterns is smaller than or equal to the preset area difference value;
the quantity adjusting component adjusts the opening quantity of the clamping points of the clamping and fixing unit to a second quantity by using a preset second quantity adjusting coefficient under the condition of a preset second area difference value; the preset second area difference value condition is that the difference value between the average pattern area and the preset area of a plurality of finished products with the same pattern is larger than the preset area difference value;
Wherein the preset first number adjustment coefficient is smaller than the preset second number adjustment coefficient.
Specifically, the preset area difference is denoted as Δp0, and Δp0=0.1m is set2 The method comprises the steps of presetting a first quantity adjusting coefficient to be beta 1, setting beta 1 = 1.2, presetting a second quantity adjusting coefficient to be beta 2, setting beta 2 = 1.3, setting the opening quantity of clamping points of a clamping fixing unit to be H, wherein 1 < beta 2, setting the opening quantity of the clamping points of the clamping fixing unit to be H ', setting H' =H× (1+2beta j)/3, wherein beta j is a preset j-th quantity adjusting coefficient, and setting j = 1,2.
According to the system, the preset area difference value is set, and the opening quantity of the clamping points of the clamping and fixing unit is adjusted under the preset area condition, so that the influence of fault monitoring accuracy reduction caused by unstable fixing degree of an original workpiece due to the fact that the opening quantity of the clamping points of the clamping and fixing unit is too small is reduced.
With continued reference to fig. 4, the stamping state monitoring module further includes a stamping speed secondary adjustment assembly connected to the third determination assembly, and configured to adjust the first corresponding stamping speed according to a difference between the length ratio of the rough pattern edge of the finished workpiece and the preset first ratio to output a second corresponding stamping speed when the preset first ratio is triggered, where the second corresponding stamping speed is proportional to the difference between the length ratio of the rough pattern edge of the finished workpiece and the preset first ratio.
Specifically, the punching speed secondary adjusting component secondarily adjusts the first corresponding punching speed to a third punching speed by using a preset third punching speed secondary adjusting coefficient under the condition of presetting a first duty ratio difference; the preset first duty ratio difference condition is that the difference value between the length duty ratio of the rough pattern edge of the finished workpiece and the preset first duty ratio is smaller than or equal to the preset duty ratio difference value;
the punching speed secondary adjusting component secondarily adjusts the first corresponding punching speed to a fourth punching speed by using a preset fourth punching speed secondary adjusting coefficient under the condition of presetting a second duty ratio difference value; the preset second duty ratio difference condition is that the difference between the length duty ratio of the rough pattern edge of the finished workpiece and the preset first duty ratio is larger than the preset duty ratio difference;
the preset third punching speed secondary adjustment coefficient is smaller than the preset fourth punching speed secondary adjustment coefficient.
Specifically, the preset duty ratio difference is denoted as Δy, Δy=0.2 is set, the preset third press speed secondary adjustment coefficient is denoted as α3, α3=1.3 is set, the preset fourth press speed secondary adjustment coefficient is denoted as α4, α4=1.4, where 1 < α3 < α4, the adjusted second corresponding press speed is denoted as V ", V" =v' × (1+αm)/2 is set, αm is the preset m-th press speed secondary adjustment coefficient, and m=3, 4 is set.
According to the system, the preset duty ratio difference value is set, and the punching speed of the cutting unit is secondarily adjusted under the preset first duty ratio condition, so that the influence of the reduction of stability of fault monitoring caused by inaccurate cutting due to the fact that the punching speed of the cutting unit is too small is reduced.
With continued reference to fig. 4, the monitoring calibration module further includes a supply speed adjusting component connected to the fourth determining component, configured to adjust a supply speed of hydraulic oil in the hydraulic unit according to a difference between the vibration frequency of the punch and the preset frequency when the preset frequency condition is triggered, where the supply speed of hydraulic oil in the hydraulic unit is proportional to the difference between the vibration frequency of the punch and the preset frequency.
Specifically, the supply speed adjusting component adjusts the supply speed of the hydraulic oil in the hydraulic unit to a first supply speed using a preset first supply speed adjustment coefficient under a preset first frequency difference condition; the preset first frequency difference condition is that the difference value between the vibration frequency of the punch and the preset frequency is smaller than or equal to the preset frequency difference value;
the supply speed adjusting component adjusts the supply speed of the hydraulic oil in the hydraulic unit to a second supply speed by using a preset second supply speed adjusting coefficient under the condition of a preset second frequency difference value; the preset second frequency difference condition is that the difference between the vibration frequency of the punch and the preset frequency is larger than the preset frequency difference;
Wherein the preset first feed rate adjustment coefficient is less than the preset second feed rate adjustment coefficient.
Specifically, the preset frequency difference is denoted as Δr0=20 Hz, the preset first supply speed adjustment coefficient is denoted as γ1, γ1=1.1, the preset second supply speed adjustment coefficient is denoted as γ2, γ2=1.2, the supply speed of the hydraulic oil in the hydraulic unit is denoted as L, wherein 1 < γ1 < γ2, the supply speed of the hydraulic oil in the adjusted hydraulic unit is denoted as L ', L' =lx (1+3γm)/4, wherein γw is a preset w-th supply speed adjustment coefficient, and w=1, 2.
According to the system, the preset frequency difference value is set, and the supply speed of the hydraulic oil in the hydraulic unit is regulated under the preset frequency condition, so that the influence of the reduction of the accuracy of fault monitoring caused by the too high vibration frequency of the punching machine due to the too low supply speed of the hydraulic oil in the hydraulic unit is reduced, and the stability and the accuracy of fault monitoring are further improved.
Example 1
In this embodiment 1, the operation stability monitoring module performs the initial adjustment of the stamping speed to output the first stamping speed when the preset second variance condition is triggered, wherein the preset variance difference is denoted as Δq0, the preset first stamping speed adjustment coefficient is denoted as α1, the preset second stamping speed adjustment coefficient is denoted as α2, and the stamping speed of the cutting unit is denoted as V, wherein 0 < α1 < α2 < 1, α1=0.8, α2=0.9, and Δq0=0.3 kg2 ，V=50spm。
In this example 1, Δq=0.4 kg was obtained2 The operation stability monitoring module determines Δq > Δq0and adjusts the punching speed of the cutting unit to a second punching speed using a preset first punching speed adjustment coefficient, calculating V' =50spm× (1+0.8)/2=45 spm.
In this embodiment 1, by setting the preset variance difference, the stamping speed of the cutting unit is adjusted under the preset second variance condition, so that the influence of the reduction of the stability of fault monitoring caused by the overlarge vibration amplitude of the original workpiece when the stamping speed of the cutting unit is overlarge is reduced, and the improvement of the stability and the accuracy of fault monitoring is further realized.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.