Control method of stamping equipment, stamping equipment and computer readable storage medium

Abstract

The invention discloses a control method of stamping equipment, the stamping equipment and a computer readable storage medium, and relates to the technical field of stamping machining, the stamping equipment is provided with a water drop sensor, and the method comprises the steps that oil dripping state data collected by the water drop sensor is obtained, and whether the oil dripping state of the stamping equipment is abnormal or not is detected based on the oil dripping state data; and if it is detected that the oil dripping state of the stamping equipment is abnormal, the stamping equipment is controlled to stop running and / or output alarm information. The stamping oil supply reliability and the abnormal response efficiency are improved, and then the stamping quality stability is improved.

Description

Technical Field

[0001] The present application relates to the technical field of stamping processing, and particularly relates to a control method for a stamping device, a stamping device, and a computer-readable storage medium. Background Art

[0002] In the field of stamping processing, stamping devices stamp and form various parts by placing raw materials in a mold. During the stamping process, in order to reduce friction, prevent damage to the surface of the raw materials, and ensure the forming quality, stamping oil is usually added to the surface of the raw materials. Currently, the addition method of stamping oil is to store stamping oil in a fuel tank, and then control the dripping amount by manipulating a solenoid valve through the MES (Manufacturing Execution System) system. At the same time, a manual switch is equipped to adjust the size of the dripping amount.

[0003] However, in actual production, this stamping oil addition method exposes many problems. On the one hand, the solenoid valve controlled by the MES system often does not drip oil during the production process, resulting in the raw materials not being normally refueled during the stamping process, affecting the stamping quality. On the other hand, the manual switch on the solenoid valve is easily accidentally closed by humans, further exacerbating the instability of the stamping oil supply. Since the stamping oil cannot be effectively added to the surface of the raw materials, dimensional defects and appearance cracking and other stamping quality instability problems occur in a variety of products after production and processing, seriously affecting production efficiency and product quality.

[0004] Therefore, it is urgent to solve the technical problem of unstable stamping quality caused by unstable solenoid valve control during the stamping oil addition process. Summary of the Invention

[0005] The main purpose of the present application is to provide a control method for a stamping device, a stamping device, and a computer-readable storage medium, aiming to solve the technical problem of unstable stamping quality caused by unstable solenoid valve control during the stamping oil addition process.

[0006] To achieve the above object, the present application provides a control method for a stamping device. The stamping device is provided with a water droplet sensor, and the control method of the stamping device includes the following steps:

[0007] Obtain the dripping state data collected by the water droplet sensor, and detect whether there is an abnormal dripping state of the stamping device based on the dripping state data;

[0008] If it is detected that the stamping device has an abnormal dripping state, then control the stamping device to stop running and / or output an alarm message.

[0009] In one embodiment, the step of detecting whether there is an abnormal oil dripping state of the stamping equipment based on the oil dripping state data includes:

[0010] Detecting whether the oil dripping state data matches the preset abnormal state data. If it matches, it is determined that there is an abnormal oil dripping state of the stamping equipment; and / or,

[0011] Obtaining the operating environment parameters of the stamping equipment, inputting the oil dripping state data and the operating environment parameters into a pre-trained oil dripping state classification model to obtain a classification result. If the classification result indicates an abnormal state, it is determined that there is an abnormal oil dripping state of the stamping equipment, where the operating environment parameters include environmental temperature, stamping oil adhesion, and stamping oil temperature.

[0012] In one embodiment, the oil dripping state data includes the oil dripping frequency. The step of detecting whether the oil dripping state data matches the preset abnormal state data includes:

[0013] If the oil dripping frequency is less than or equal to the preset target frequency threshold, it is determined that the oil dripping state data matches the preset abnormal state data;

[0014] If the oil dripping frequency is greater than the preset target frequency threshold, it is determined that the oil dripping state data does not match the preset abnormal state data.

[0015] In one embodiment, the oil dripping state data includes the adjacent oil droplet interval time. The step of detecting whether the oil dripping state data matches the preset abnormal state data includes:

[0016] If the adjacent oil droplet interval time belongs to the abnormal time interval range, it is determined that the oil dripping state data matches the preset abnormal state data;

[0017] If the adjacent oil droplet interval time belongs to the normal time interval range, it is determined that the oil dripping state data does not match the preset abnormal state data.

[0018] In one embodiment, before the step of detecting whether the oil dripping state data matches the preset abnormal state data, the method further includes:

[0019] Obtaining the workpiece parameter information of the current stamping workpiece, where the workpiece parameter information includes the stamping part shape, stamping part size, and / or stamping part material;

[0020] Obtaining the abnormal state data corresponding to the workpiece parameter information based on the preset mapping relationship, and determining the abnormal state data corresponding to the workpiece parameter information as the preset abnormal state data, where the preset mapping relationship is the corresponding relationship between different workpiece parameter information and abnormal state data.

[0021] In one embodiment, after the step of obtaining the drip oil state data collected by the water droplet sensor, the method further includes:

[0022] Obtain the historical drip oil state data collected by the water droplet sensor, and determine the change trend of the drip oil state based on the historical drip oil state data and the drip oil state data;

[0023] If the change trend of the drip oil state matches the preset abnormal change trend, control the stamping equipment to output a prompt message.

[0024] In one embodiment, after the step of obtaining the drip oil state data collected by the water droplet sensor, the method further includes:

[0025] Obtain the stamping part identifier of the current stamping part and the punching press operation parameters, and associate and store the punching press operation parameters, the drip oil state data, and the stamping part identifier in a preset quality traceability database, where the punching press operation parameters and the drip oil state data are associated and stored as stamping process information with the stamping part identifier;

[0026] In response to a quality anomaly traceability request, obtain the abnormal stamping part identifier according to the quality anomaly traceability request;

[0027] Query the target stamping process information associated with the abnormal stamping part identifier in the preset quality traceability database according to the abnormal stamping part identifier;

[0028] Generate and output a quality anomaly diagnosis report according to the target stamping process information, where the quality anomaly diagnosis report includes at least the cause of the anomaly.

[0029] In addition, to achieve the above object, the present application further provides a stamping device, where the stamping device includes a water droplet sensor and a processor connected to each other, and the processor is used to execute the steps of the control method of the stamping device as described above.

[0030] In one embodiment, the stamping device further includes an oil tank, an oil pipe, and a bubble counter. The stamping oil in the oil tank flows into the bubble counter through the oil pipe, and the water droplet sensor is arranged on the oil pipe near the bubble counter.

[0031] In addition, to achieve the above object, the present application further provides a readable storage medium, where the readable storage medium is a computer-readable storage medium, and a computer program is stored on the computer-readable storage medium. The computer program is executed by a processor to implement the steps of the control method of the stamping device as described above.

[0032] The present application also provides a computer program product, including a computer program, and when the computer program is executed by a processor, it implements the steps of the control method of the stamping device as described above.

[0033] One or more technical solutions proposed by the present application have at least the following technical effects:

[0034] In the present application, a water droplet sensor is provided for the stamping device to obtain the oil dripping state data collected by the water droplet sensor, and based on the oil dripping state data, it is detected whether there is an abnormal oil dripping state in the stamping device; if it is detected that there is an abnormal oil dripping state in the stamping device, the stamping device is controlled to stop running and / or an alarm message is output. In this way, in the embodiments of the present application, the oil dripping state of the stamping device is monitored in real time through the oil dripping state data collected by the water droplet sensor. When abnormal oil dripping states such as interrupted oil dripping and sudden drop in flow rate are detected, the production process is immediately intervened by stopping the machine or alarming, so as to avoid problems such as material stress concentration and abnormal die wear caused by the continuous operation of the stamping machine in a lubrication-deficient state, thereby directly blocking the formation path of systematic quality defects such as out-of-tolerance dimensions and surface cracking caused by unstable stamping oil supply. Compared with the original stamping oil addition control process that only relies on the single signal feedback of the MES system for the start and stop of the solenoid valve, the introduction of the water droplet sensor upgrades the original extensive control mode that is passively dependent on the solenoid valve instruction to an active and precise regulation based on the actual flow state of the oil fluid, significantly improving the reliability of stamping oil supply and the abnormal response efficiency, and further improving the stability of stamping quality, and can effectively solve the technical problem of unstable stamping quality caused by unstable solenoid valve control during the stamping oil addition process. Description of the Drawings

[0035] The drawings here are incorporated into the description and form a part of this description, showing embodiments consistent with the present application, and are used together with the description to explain the principles of the present application.

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0037] Figure 1 It is a schematic flowchart of the first embodiment of the control method of the stamping device of the present application;

[0038] Figure 2 It is a schematic structural diagram of the stamping device involved in an embodiment of the control method of the stamping device of the present application;

[0039] Figure 3Schematic structural diagram of a stamping device related to an embodiment of the control method of the present application;

[0040] Figure 4 Schematic structural diagram of the device of the control device of the present application;

[0041] Figure 5 Schematic structural diagram of the device of the hardware operating environment related to the control method device of the stamping device in the embodiment of the present application.

[0042] Explanation of the attached drawing numbers:

[0043] 101. Oil tank; 102. Solenoid valve; 103. Oil pipe; 104. Water droplet sensor; 105. Bubble counter.

[0044] The realization of the purpose, functional characteristics and advantages of the present application will be further described with reference to the accompanying drawings in combination with the embodiments. Specific embodiments

[0045] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0046] Since the stamping parts need to be stamped and formed through raw materials passing through the mold, stamping oil needs to be added during the stamping process of the stamping parts. The current stamping oil adding method is to add stamping oil through the oil tank and then control the dripping amount by the MES system to control the solenoid valve. Under the control of the solenoid valve and the switch for manually controlling the dripping amount, there are at least the following problems:

[0047] On the one hand, the solenoid valve controlled by the MES system often does not drip oil during the production process, resulting in abnormal oil addition during production.

[0048] On the other hand, the manual switch on the solenoid valve is easily closed manually.

[0049] The above two problems will both cause the raw materials to be unable to effectively add oil to the surface of the raw materials during production and processing, resulting in major problems such as poor product dimensions and appearance cracking, and further leading to customer complaints.

[0050] Based on this, the main solution of this application is: a water droplet sensor is provided for the stamping equipment, the oil dripping state data collected by the water droplet sensor is obtained, and whether there is an abnormal oil dripping state in the stamping equipment is detected based on the oil dripping state data; if it is detected that the stamping equipment has an abnormal oil dripping state, the stamping equipment is controlled to stop running and / or an alarm message is output.

[0051] This application monitors the oil dripping state of the stamping equipment in real time through the oil dripping state data collected by the water droplet sensor. When abnormal oil dripping states such as oil dripping interruption and sudden flow drop are detected, the production process is immediately intervened by stopping the machine or giving an alarm, so as to avoid problems such as material stress concentration and abnormal die wear caused by the continuous operation of the stamping machine in a state of lack of lubrication, thereby directly blocking the formation path of systematic quality defects such as dimensional tolerance and surface cracking caused by unstable stamping oil supply. Compared with the original stamping oil addition control process that only relies on the single signal feedback of the MES system for the start and stop of the solenoid valve, the introduction of the water droplet sensor upgrades the original extensive control mode that passively relies on the solenoid valve command to an active and precise regulation based on the actual flow state of the oil fluid, improves the reliability of stamping oil supply and the abnormal response efficiency, and further improves the stability of stamping quality, and can effectively solve the technical problem of unstable stamping quality caused by unstable solenoid valve control during the stamping oil addition process.

[0052] It should be noted that the execution subject of each embodiment of the control method of the stamping equipment in this application can be a stamping equipment capable of realizing the above functions.

[0053] Based on this, the control method of the stamping equipment of the first embodiment is proposed in this application. The stamping equipment is provided with a water droplet sensor. Please refer to Figure 1 as shown, the control method of the stamping equipment has the following steps S10 to S20:

[0054] Step S10, obtain the oil dripping state data collected by the water droplet sensor, and detect whether there is an abnormal oil dripping state in the stamping equipment based on the oil dripping state data;

[0055] It should be noted that the water droplet sensor can be set at the end of the oil path to monitor the actual flow state of the stamping oil in real time through the set water droplet sensor (such as oil dripping frequency, interval time between adjacent oil droplets, whether there is a flow interruption, etc.). Among them, the end of the oil path refers to the connection area segment before the stamping oil reaches the die lubrication point after being distributed from the main oil path. The main oil path refers to the core conveying channel from the output end of the oil pump to the flow distribution node in the stamping oil, which can include oil pipes and flow control valves (such as solenoid valves). The die lubrication point refers to the direct contact area where the stamping oil finally acts on the die movement (such as the punch, die cavity or guide post), which is used to reduce friction, dissipate heat or prevent metal adhesion. For example, in a specific embodiment, refer to Figure 2As shown, the stamping equipment includes an oil tank 101, a solenoid valve 102 and an oil pipe 103. Specifically, a solenoid valve 102 is added to the oil pipe 103, and the solenoid valve 102 is used to control the oil dripping amount. Further, with reference to Figure 3 As shown, a bubble counter 105 is further provided at the lower end of the solenoid valve 102. The flow path of the stamping oil is that after the stamping oil is added to the oil tank 101, the stamping oil freely drips into the bubble counter 105 under the action of gravity through the oil pipe 103, and then flows to the die lubrication point through the bubble counter 105. The water droplet sensor 104 is arranged on the oil pipe 103 near the bubble counter 105.

[0056] The oil dripping state data may specifically include but is not limited to the oil dripping frequency, the time interval between adjacent oil droplets, etc. In this embodiment, the oil dripping state data at least includes the oil dripping frequency. It can be understood that after each drop of stamping oil drips, the water droplet sensor will collect a pulse signal triggered by the oil droplet. Thus, the pulse sequence signal collected by the water droplet sensor during this sampling period can be statistically analyzed to obtain the oil dripping state data of this sampling period. That is to say, the data directly collected by the water droplet sensor is actually a pulse sequence signal, and the oil dripping state data is the data analyzed based on the pulse sequence signal directly collected by the water droplet sensor, which can be understood as the data indirectly collected by the water droplet sensor.

[0057] After obtaining the oil dripping state data, it is detected whether there is an abnormal oil dripping state in the stamping equipment based on the oil dripping state data. Among them, the abnormal oil dripping state refers to an abnormal working condition in which the actual dripping mode of the stamping oil deviates from the preset lubrication requirement, such as specifically including one or more abnormal states of abnormal oil dripping frequency, unstable time interval between adjacent oil droplets, continuous interruption of flow, and abnormal pulse signal amplitude. Among them, the abnormal oil dripping frequency may specifically be that the number of drops of stamping oil per unit time is lower than the minimum threshold required for lubrication (such as the frequency is less than 1 drop per second) or exceeds the safety upper limit (such as the frequency is greater than 20 drops per second), resulting in insufficient lubrication or oil waste; the unstable time interval between adjacent oil droplets may specifically be that the standard deviation of the time interval between adjacent oil droplets exceeds the allowable range; the continuous interruption of flow may specifically be that there is no pulse signal within a continuous preset period (such as 30 seconds), indicating that the oil circuit is completely blocked or the sensor fails; the abnormal pulse signal amplitude may specifically be that the pulse intensity corresponding to a single oil droplet exceeds the reasonable range (such as less than 0.5V or greater than 3V), which may be caused by abnormal oil droplet volume.

[0058] Step S20, if it is detected that there is an abnormal oil dripping state in the stamping equipment, then control the stamping equipment to stop running and / or output an alarm message.

[0059] If it is detected that there is an abnormal oil dripping state in the stamping equipment, control the stamping equipment to stop running and / or output an alarm message. Control the stamping equipment to stop running so that when it is detected that there is an abnormal oil dripping state, the stamping equipment immediately stops the stamping work, interrupts the current stamping operation cycle, and avoids the risks of abnormal wear of the die, scratching of the surface of the stamped parts, or equipment jamming caused by continuous operation under abnormal lubrication conditions. Output an alarm message, which can specifically be the information set in advance to remind the user that there is an abnormal oil dripping state in the stamping equipment and shutdown maintenance is required, such as the buzzer sounding continuously, the emergency stop indicator light staying red constantly, etc. The form of the alarm in this embodiment is not specifically limited.

[0060] If it is detected that there is no abnormal oil dripping state in the stamping equipment, maintain the normal operation state of the stamping equipment and continue the periodic monitoring mode. Obtain the oil dripping state data collected by the water droplet sensor in the next sampling period at a preset sampling interval (such as every 60 seconds), and continuously iterate the detection of the abnormal oil dripping state to form a closed-loop monitoring link.

[0061] In this embodiment, a water droplet sensor is set for the stamping equipment to obtain the oil dripping state data collected by the water droplet sensor, and based on the oil dripping state data, it is detected whether there is an abnormal oil dripping state in the stamping equipment; if it is detected that there is an abnormal oil dripping state in the stamping equipment, control the stamping equipment to stop running and / or output an alarm message. In this way, the oil dripping state of the stamping equipment is monitored in real time through the oil dripping state data collected by the water droplet sensor. When abnormal oil dripping states such as interrupted oil dripping and sudden drop in flow rate are detected, the production process is immediately intervened by stopping the machine or giving an alarm, avoiding problems such as material stress concentration and abnormal die wear caused by the stamping machine running continuously under lubrication deficiency, thereby directly blocking the formation path of systematic quality defects such as dimensional tolerance and surface cracking caused by unstable stamping oil supply. Compared with the original stamping oil addition control process that only relies on the single signal feedback of the MES system for the start and stop of the solenoid valve, the introduction of the water droplet sensor upgrades the original extensive control mode that passively relies on the solenoid valve command to an active and precise regulation based on the actual flow state of the oil, significantly improving the reliability of the stamping oil supply and the abnormal response efficiency, and further improving the stability of the stamping quality, and can effectively solve the technical problem of unstable stamping quality caused by unstable solenoid valve control during the stamping oil addition process.

[0062] Based on the first embodiment of this application, in the second embodiment of this application, the same or similar content as in the above-mentioned first embodiment can be referred to the above introduction and will not be repeated hereinafter. On this basis, the step of detecting whether there is an abnormal oil dripping state in the stamping equipment based on the oil dripping state data includes:

[0063] Step A10, detect whether the oil dripping state data matches the preset abnormal state data. If it matches, it is determined that there is an abnormal oil dripping state in the stamping equipment; and / or,

[0064] Step A20, obtain the operating environment parameters of the stamping equipment, input the oil dripping state data and the operating environment parameters into the pre-trained oil dripping state classification model to obtain a classification result. If the classification result indicates an abnormal state, it is determined that there is an abnormal oil dripping state in the stamping equipment, where the operating environment parameters include ambient temperature, stamping oil adhesion, and stamping oil temperature.

[0065] The preset abnormal state data can specifically be a pre-set typical abnormal state setting, such as the oil dripping frequency being less than a preset threshold, the time interval between adjacent oil drops belonging to an abnormal time interval range, the duration of interrupted flow being greater than a preset threshold, etc. If any parameter in the oil dripping state data exceeds the corresponding preset threshold range, it can be determined that there is an abnormal oil dripping state in the stamping equipment. By comparing the oil dripping state data with the preset abnormal state data, the preset abnormal state data is used to quickly respond to typical abnormalities (such as a sudden drop in the oil dripping frequency or continuous interrupted flow), ensuring the ability to quickly respond to sudden serious faults and avoiding dry friction of the mold or jamming of the stamped parts due to lubrication interruption.

[0066] It should be noted that the operating environment parameters include ambient temperature, stamping oil adhesion, and stamping oil temperature. Relevant personnel can also set other operating environment parameters to be obtained based on actual needs, and this embodiment does not make specific limitations on this. The oil dripping state classification model can specifically be any classification model, such as a random forest, a support vector machine, a logistic regression model, etc., and this embodiment does not make specific limitations on this.

[0067] Considering that operating environment parameters such as ambient temperature, stamping oil adhesion, and stamping oil temperature may cause changes in the physical properties of the oil under certain conditions (such as an increase in the natural oil dripping frequency caused by a decrease in viscosity at high temperatures), based on this, in this embodiment, the oil dripping state classification model is trained to fuse parameters such as ambient temperature, stamping oil viscosity, and stamping oil temperature, dynamically correcting the interference of changes in the physical properties of the oil on the oil dripping state, so as to realize the detection of abnormal oil dripping states adapting to environmental changes and improve the detection accuracy. For example, at a low ambient temperature, the model can automatically relax the frequency lower limit by associating with the ambient temperature parameter to achieve accurate judgment adapting to the environment.

[0068] In a possible implementation manner, the oil dripping state data includes the oil dripping frequency, and the step of detecting whether the oil dripping state data matches the preset abnormal state data includes:

[0069] Step B10, if the oil dripping frequency is less than or equal to the preset target frequency threshold, it is determined that the oil dripping state data matches the preset abnormal state data;

[0070] Step B20, if the oil dripping frequency is greater than the preset target frequency threshold, it is determined that the oil dripping state data does not match the preset abnormal state data.

[0071] By comparing the dynamic logic relationship between the real-time oil dripping frequency and the preset target frequency threshold, abnormal determination is realized. When the real-time oil dripping frequency is less than or equal to the preset target frequency threshold, it is determined that the oil dripping state data matches the preset abnormal state data, and an abnormal response mechanism is triggered; conversely, if the real-time oil dripping frequency is greater than the preset target frequency threshold, it is determined that the oil dripping state data does not match the abnormal mode, and the normal operation of the device is maintained.

[0072] In a possible implementation manner, the oil dripping state data includes the adjacent oil drop interval time, and the step of detecting whether the oil dripping state data matches the preset abnormal state data includes:

[0073] Step C10, if the adjacent oil drop interval time belongs to the abnormal time interval range, it is determined that the oil dripping state data matches the preset abnormal state data;

[0074] Step C20, if the adjacent oil drop interval time belongs to the normal time interval range, it is determined that the oil dripping state data does not match the preset abnormal state data.

[0075] It can be understood that in a sampling period, multiple adjacent oil drop interval times may be statistically obtained, that is, the oil dripping state data includes one or more adjacent oil drop interval times. Thus, it can be respectively determined whether each adjacent oil drop interval time belongs to the abnormal time interval range. It can be that if any adjacent oil drop interval time belongs to the abnormal time interval range, an abnormal condition for the oil dripping state data to match the preset abnormal state data is triggered; conversely, if all adjacent interval times are stably within the normal time interval range, it is determined that the oil dripping state data does not match the abnormal mode, that is, it is determined that the oil dripping state data does not match the preset abnormal state data.

[0076] It can also be that if the number of adjacent oil drop interval times exceeding the preset number belongs to the abnormal time interval range, or if the continuous preset number of adjacent oil drop interval times belongs to the abnormal time interval range, an abnormal condition for the oil dripping state data to match the preset abnormal state data is triggered, so as to reduce the occurrence of accidental fluctuation misjudgment caused by instantaneous interference.

[0077] In a possible implementation manner, before the step of detecting whether the oil dripping state data matches the preset abnormal state data, the method further includes:

[0078] Step D10, obtaining the workpiece parameter information of the current stamping workpiece, where the workpiece parameter information includes the stamping part shape, stamping part size, and / or stamping part material;

[0079] The current stamping workpiece refers to the workpiece being currently processed by the stamping equipment. The workpiece parameter information includes, but is not limited to, one or more of the stamping shape, stamping part size, and stamping part material. Relevant personnel can also set other workpiece parameter information that needs to be obtained based on actual requirements, and this embodiment does not make specific restrictions on this.

[0080] Step D20: Obtain the abnormal state data corresponding to the workpiece parameter information based on a preset mapping relationship, and determine that the abnormal state data corresponding to the workpiece parameter information is preset abnormal state data, where the preset mapping relationship is the corresponding relationship between different workpiece parameter information and abnormal state data.

[0081] Considering that different stamping workpieces have different requirements for lubrication processes such as oil dripping frequency and oil dripping time interval. For example, deep drawing workpieces (such as automotive sheet metal parts) require a higher oil dripping frequency threshold and stricter off - flow time limit due to the large die contact area and high friction risk; while small - sized thin - wall stamping parts (such as electronic connectors) require a tightened fluctuation range of the oil dripping time interval (such as ±5%) to avoid the influence of oil film accumulation on the forming size. Based on this, this embodiment sets the corresponding relationship between different workpiece parameter information and abnormal state data to obtain the corresponding preset abnormal state data based on the workpiece parameter information of the stamping workpiece, and perform subsequent abnormal detection based on this preset abnormal state data, so as to realize the dynamic adaptation of the abnormal detection standard of the oil dripping state, avoid problems of over - oiling or insufficient lubrication caused by fixed thresholds, reduce the manual parameter adjustment cost during production changeover, ensure that the lubrication failure risks of different workpieces can be accurately avoided, and further improve the quality of stamping workpieces.

[0082] Exemplarily, to help understand the technical concept or technical principle of the control method of the stamping equipment after combining this embodiment with the above - mentioned first embodiment, a specific embodiment is now listed. In this specific embodiment, after filling the stamping oil into the fuel tank of the stamping equipment, on the basis of realizing gravity - drip lubrication through the oil circuit system, an intelligent upgrade and transformation is implemented. Specifically, a solenoid valve device is added to the oil pipeline, and a linkage control mechanism among the MES system, the solenoid valve, and the punch system is established. By real - time collecting the punch closing - times signal and uploading it to the MES system, the system will generate a control instruction according to a preset lubrication parameter model (such as the relationship between punch times and oil dripping volume), and send the control instruction to the solenoid valve execution unit, finally realizing the digital setting and full - automatic intelligent control of the stamping oil dripping volume, and realizing the setting and intelligent control of the oil dripping volume by the MES system.

[0083] The water drop sensor is used synchronously to monitor the dripping state of the stamping oil freely dripping in the oil pipe and output signals. After each drop of stamping oil, the sensor will transmit 1 signal. After the sensor is linked with the punching machine, if the dripping frequency feedback by the sensor is lower than the set value, the punching machine will be controlled to stop automatically and alarm. When the stamping oil drops normally into the bubble counter, the water drop sensor senses the signal and transmits it normally, and the punching machine runs normally.

[0084] Through the above scheme, the intelligent setting control and anti-fool monitoring of the process of the stamping oil dripping from the oil tank to the surface of the raw material are realized, and the monitoring of whether there is an abnormality in the oil volume during the production process is realized. For example, in the continuous mode of the stamping equipment, after the stamping equipment is started, it starts to detect. If no dripping signal (that is, the dripping frequency is zero, equal to 0 times per 10 seconds, or there is a break in the flow for 10 seconds) is input within 10S, an alarm will be output and the machine will be controlled to stop; if a dripping fall is detected within 10S (that is, the dripping frequency is greater than 0 times per 10 seconds, or there is no break in the flow within 10 seconds), it will enter the next abnormal detection cycle.

[0085] It should be noted that the above examples are only used to assist in understanding this embodiment and do not constitute a limitation on the control process of the stamping equipment in this embodiment. Based on this technical concept, more simple transformations in various forms are within the protection scope of this application.

[0086] Based on the first embodiment and / or the second embodiment of this application, in the third embodiment of this application, the same or similar content as in the above-mentioned first embodiment and second embodiment can be referred to the above introduction and will not be repeated later. On this basis, after the step of obtaining the dripping state data collected by the water drop sensor, the method further includes:

[0087] Step E10, obtaining the historical dripping state data collected by the water drop sensor, and determining the change trend of the dripping state based on the historical dripping state data and the dripping state data;

[0088] Obtain the historical dripping state data before the current sampling period, so as to determine the change trend of the dripping state based on the historical dripping state data and the dripping state data within the current sampling period, such as the change trend of the dripping frequency, the fluctuation trend of the oil drop volume, the stability trend of the dripping interval, etc.

[0089] Step E20, if the change trend of the dripping state matches the preset abnormal change trend, control the stamping equipment to output a prompt message.

[0090] When it is detected that the change trend of the dripping state matches the preset abnormal change trend, a prompt message is output to remind the user that there is an abnormality in the current change trend of the dripping state, which is convenient for the user to repair the stamping equipment when idle, so as to achieve the purpose of early warning.

[0091] Considering that the abnormal change trend of the oil dripping state is usually a sign of mechanical component wear or core component performance degradation in the stamping equipment. For example, sediment accumulation in the fuel tank: oil impurities cause the filter screen to clog, which is manifested as a gradual decrease in the oil dripping frequency and a synchronous reduction in the oil droplet volume; solenoid valve aging / sticking: valve core wear causes action delay, manifested as a stepwise increase in the oil dripping interval or sudden interruption of the oil flow; oil circuit seal failure: micro-leakage of the pipeline causes oil pressure fluctuations, such as irregular jumps in the oil droplet volume of more than ±30%. Based on this, in this embodiment, the change trend of the oil dripping state of the stamping equipment is determined based on historical oil dripping state data. When it is detected that the change trend of the oil dripping state matches the preset abnormal change trend, a prompt message is output to remind the user, facilitating the user to perform subsequent processing such as cleaning the sediment in the fuel tank and overhauling the solenoid valve during idle time.

[0092] In a possible implementation manner, after the step of obtaining the oil dripping state data collected by the water droplet sensor, the method further includes:

[0093] Step F10, obtaining the stamping part identifier and the punch press operation parameters of the current stamping part, and associatively storing the punch press operation parameters, the oil dripping state data and the stamping part identifier in a preset quality traceability database, where the punch press operation parameters and the oil dripping state data are stored in association with the stamping part identifier as stamping process information;

[0094] It should be noted that the stamping process information associated with the stamping part identifier includes but is not limited to the punch press operation parameters and the oil dripping state data. Relevant personnel can set the relevant process information to be associated and stored based on actual needs, and this embodiment does not make specific limitations on this.

[0095] Among them, the punch press operation parameters refer to the process parameters that affect the forming quality during the stamping process, and specifically may include dynamic indicators such as the number of strokes per minute, motor power, stamping speed, die closing height, lubrication system pressure, and body vibration amplitude. By associatively storing the stamping part identifier with the corresponding process parameters and oil dripping state data (such as oil dripping frequency, adjacent oil droplet interval time, oil droplet volume), a full-dimensional production resume covering equipment status and process conditions is formed.

[0096] Furthermore, the production batch number, die number, and operator information can also be associated to ensure the integrity and resolvability of the traceability data.

[0097] Step F20, in response to a quality anomaly traceability request, obtaining the abnormal stamping part identifier according to the quality anomaly traceability request;

[0098] Step F30, querying the target stamping process information associated with the abnormal stamping part identifier in the preset quality traceability database according to the abnormal stamping part identifier;

[0099] Step F40: Generate and output a quality anomaly diagnosis report based on the target stamping process information, where the quality anomaly diagnosis report includes at least the cause of the anomaly.

[0100] It should be noted that a quality anomaly diagnosis model can be pre-trained. After inputting the target stamping process information into the quality anomaly diagnosis model, a quality anomaly diagnosis report can be obtained and output, so that the user can determine the cause of the quality anomaly of the stamped workpiece based on referring to the quality anomaly diagnosis report.

[0101] This quality anomaly diagnosis includes at least the cause of the anomaly. For example, abnormal wear of the die due to insufficient oil film thickness, local lubrication failure caused by a sudden drop in the oil dripping frequency, or forming stress concentration caused by the mismatch between the stamping speed and the material properties.

[0102] In this embodiment, by establishing a quality traceability database and integrating multi-source heterogeneous data of the stamping process with the stamping part identification as the index, the full-link quality correlation analysis from raw materials to finished products is realized. When a quality anomaly occurs, the key parameter deviation that causes defects in the production process can be quickly located (such as a 20% decrease in the lubrication pressure during a certain stamping cycle), and the risk of latent faults can also be predicted based on the change trend of the stamping process information (such as the remaining life of the solenoid valve being less than 10%). Thus, it provides a data-driven decision basis for the closed-loop processing of quality problems and supports the iterative upgrade of process optimization and preventive maintenance strategies.

[0103] In addition, an embodiment of the present application also proposes a control device. The control device is deployed on a stamping device, and the stamping device is provided with a water droplet sensor. Refer to Figure 4 As shown, the control device includes:

[0104] A detection module 10, configured to obtain the oil dripping state data collected by the water droplet sensor and detect whether there is an abnormal oil dripping state of the stamping device based on the oil dripping state data;

[0105] A control module 20, configured to control the stamping device to stop running and / or output an alarm message if it is detected that the stamping device has an abnormal oil dripping state.

[0106] In one embodiment, the detection module 10 is further configured to:

[0107] Detect whether the oil dripping state data matches the preset abnormal state data. If it matches, it is determined that the stamping device has an abnormal oil dripping state; and / or,

[0108] Obtain the operating environment parameters of the stamping equipment, input the drip oil state data and the operating environment parameters into a pre-trained drip oil state classification model to obtain a classification result. If the classification result indicates an abnormal state, it is determined that there is an abnormal drip oil state in the stamping equipment, where the operating environment parameters include ambient temperature, stamping oil adhesion, and stamping oil temperature.

[0109] In one embodiment, the drip oil state data includes the drip oil frequency, and the detection module 10 is further configured to:

[0110] If the drip oil frequency is less than or equal to a preset target frequency threshold, it is determined that the drip oil state data matches the preset abnormal state data;

[0111] If the drip oil frequency is greater than the preset target frequency threshold, it is determined that the drip oil state data does not match the preset abnormal state data.

[0112] In one embodiment, the drip oil state data includes the adjacent oil drop interval time, and the detection module 10 is further configured to:

[0113] If the adjacent oil drop interval time belongs to the abnormal time interval range, it is determined that the drip oil state data matches the preset abnormal state data;

[0114] If the adjacent oil drop interval time belongs to the normal time interval range, it is determined that the drip oil state data does not match the preset abnormal state data.

[0115] In one embodiment, the detection module 10 is further configured to:

[0116] Obtain the workpiece parameter information of the current stamping workpiece, where the workpiece parameter information includes the stamping part shape, stamping part size, and / or stamping part material;

[0117] Based on a preset mapping relationship, obtain the abnormal state data corresponding to the workpiece parameter information, and determine the abnormal state data corresponding to the workpiece parameter information as the preset abnormal state data, where the preset mapping relationship is the corresponding relationship between different workpiece parameter information and abnormal state data.

[0118] In one embodiment, the detection module 10 is further configured to:

[0119] Obtain the historical drip oil state data collected by the water drop sensor, and determine the drip oil state change trend based on the historical drip oil state data and the drip oil state data;

[0120] If the drip oil state change trend matches the preset abnormal change trend, control the stamping equipment to output a prompt message.

[0121] In one embodiment, the control device further includes a quality traceability module, and the quality traceability module is configured to:

[0122] Obtain the stamping part identifier and the punch operating parameters of the current stamping part, and associate and store the punch operating parameters, the oil dripping state data, and the stamping part identifier in a preset quality traceability database, wherein the punch operating parameters and the oil dripping state data are associated and stored as stamping process information with the stamping part identifier;

[0123] Respond to a quality anomaly traceability request, and obtain an abnormal stamping part identifier according to the quality anomaly traceability request;

[0124] Query the target stamping process information associated with the abnormal stamping part identifier in the preset quality traceability database according to the abnormal stamping part identifier;

[0125] Generate and output a quality anomaly diagnosis report according to the target stamping process information, wherein the quality anomaly diagnosis report at least includes the cause of the anomaly.

[0126] In addition, an embodiment of the present application further provides a stamping device, which includes a water droplet sensor and a processor connected to each other, and the processor is configured to execute the steps of the control method of the stamping device described above.

[0127] Further, in one embodiment, the stamping device further includes an oil tank, an oil pipe, and a bubble counter. The stamping oil in the oil tank flows into the bubble counter through the oil pipe, and the water droplet sensor is disposed on the oil pipe near the bubble counter.

[0128] Such as Figure 5As shown, the stamping device may further include a processing device 1001 (such as a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM: Read Only Memory) 1002 or the program loaded from the storage device 1003 into the random access memory (RAM: Random Access Memory) 1004. In the RAM 1004, various programs and data required for the operation of the stamping device are also stored. The processing device 1001, the ROM 1002, and the RAM 1004 are connected to each other through a bus 1005. The input / output (I / O) interface 1006 is also connected to the bus. Generally, the following systems may be connected to the I / O interface 1006: an input device 1007 including, for example, a touch screen, a touchpad, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; an output device 1008 including, for example, a liquid crystal display (LCD: Liquid Crystal Display), a speaker, a vibrator, etc.; a storage device 1003 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 1009. The communication device 1009 can allow the stamping device to communicate with other devices wirelessly or wiredly to exchange data. Although the figure shows a stamping device with various systems, it should be understood that it is not required to implement or have all the shown systems. More or fewer systems can be alternatively implemented or had.

[0129] Specifically, according to the embodiments disclosed in the present application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program contains program codes for performing the methods shown in the flowcharts. In such an embodiment, the computer program can be downloaded and installed from the network through the communication device, or installed from the storage device 1003, or installed from the ROM 1002. When the computer program is executed by the processing device 1001, the above functions defined in the methods of the embodiments disclosed in the present application are executed.

[0130] The stamping device provided by the embodiments of the present application adopts the control method of the stamping device in the above embodiments, and can solve the technical problem of unstable stamping quality caused by unstable solenoid valve control during the stamping oil adding process. Compared with the prior art, the beneficial effects of the stamping device provided by the present application are the same as those of the control method of the stamping device provided by the above embodiments, and other technical features in this stamping device are the same as those disclosed in the method of the previous embodiment, and will not be elaborated here.

[0131] It should be understood that each part disclosed in this application can be implemented by hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0132] As described above, the above are only the specific embodiments of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed in this application can easily think of changes or substitutions, which should all be covered within the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

[0133] In addition, to achieve the above objective, an embodiment of this application further provides a readable storage medium, which has computer-readable program instructions (i.e., computer programs) stored thereon, and the computer-readable program instructions are used to execute the control method of the stamping device in the above embodiments.

[0134] The computer-readable storage medium provided by the embodiment of this application can be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or any combination of the above. More specific examples of the computer-readable storage medium may include, but are not limited to: electrical connections with one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM) or flash memory, optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the above. In this embodiment, the computer-readable storage medium can be any tangible medium that contains or stores a program, and this program can be used by or combined with an instruction execution system, device, or device. The program code contained on the computer-readable storage medium can be transmitted by any appropriate medium, including but not limited to: wires, optical cables, RF (radio frequency), etc., or any suitable combination of the above.

[0135] The above computer-readable storage medium can be included in the stamping device; it can also exist separately without being assembled into the stamping device.

[0136] The above computer-readable storage medium stores one or more programs, which, when executed by a stamping device, cause the stamping device to: obtain the oil dripping state data collected by a water droplet sensor, and detect whether there is an abnormal oil dripping state in the stamping device based on the oil dripping state data; if it is detected that there is an abnormal oil dripping state in the stamping device, control the stamping device to stop running and / or output an alarm message.

[0137] Computer program code for performing the operations of the present application may be written in one or more programming languages or combinations thereof. The programming languages include object-oriented programming languages such as Java, Smalltalk, C++, and also include conventional procedural programming languages such as the "C" language or similar programming languages. The program code may execute entirely on the user's computer, partially on the user's computer, execute as a stand-alone software package, execute partially on the user's computer and partially on a remote computer, or execute entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., through the Internet using an Internet service provider).

[0138] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagram may represent a module, a program segment, or a portion of code that contains one or more executable instructions for implementing a specified logical function. It should also be noted that, in some alternative implementations, the functions marked in the blocks may occur in a different order than marked in the accompanying drawings. For example, two consecutive blocks shown may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, and the combinations of blocks in the block diagram and / or flowchart, may be implemented by a dedicated hardware-based system for performing the specified functions or operations, or may be implemented by a combination of dedicated hardware and computer instructions.

[0139] The modules described in the embodiments of the present application may be implemented in software or in hardware. In some cases, the name of the module does not constitute a limitation on the module itself.

[0140] The readable storage medium provided by this application is a computer-readable storage medium. The computer-readable storage medium stores computer-readable program instructions (i.e., computer programs) for executing the control method of the above stamping equipment, and can solve the technical problem of unstable stamping quality caused by unstable solenoid valve control during the stamping oil addition process. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided by this application are the same as those of the control method of the stamping equipment provided in the above embodiments, and will not be elaborated here.

[0141] In addition, an embodiment of this application also proposes a computer program product, including a computer program, and when the computer program is executed by a processor, it implements the steps of the control method of the stamping equipment as described above.

[0142] The specific implementation manners of the computer program product of this application are basically the same as those of the embodiments of the control method of the stamping equipment, and will not be elaborated here.

[0143] It should be noted that in this article, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or system. Without more limitations, an element defined by the statement "including a..." does not exclude the existence of other identical elements in the process, method, article or system including that element.

[0144] The serial numbers of the embodiments of this application above are only for description and do not represent the superiority or inferiority of the embodiments.

[0145] Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is a better implementation manner. Based on such an understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software sensor. This computer software sensor is stored in a storage medium as described above (such as ROM / RAM, magnetic disk, optical disc), and includes several instructions to enable a terminal device (which can be a mobile phone, computer, server or network device, etc.) to execute the methods described in the embodiments of this application.

[0146] The above are only the preferred embodiments of this application, and do not limit the patent scope of this application accordingly. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of this application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of this application.

Claims

1. A control method for a stamping device, characterized in that, The stamping equipment is provided with a water droplet sensor, and the control method of the stamping equipment includes the following steps: Obtain the oil dripping state data collected by the water droplet sensor, and detect whether there is an abnormal oil dripping state of the stamping equipment based on the oil dripping state data; If it is detected that the stamping equipment has an abnormal oil dripping state, control the stamping equipment to stop running and / or output an alarm message.

2. The control method according to claim 1, wherein The step of detecting whether the stamping equipment has an abnormal oil dripping state based on the oil dripping state data includes: Detect whether the oil dripping state data matches the preset abnormal state data. If it matches, it is determined that the stamping equipment has an abnormal oil dripping state; and / or, Obtain the operating environment parameters of the stamping equipment, input the oil dripping state data and the operating environment parameters into a pre-trained oil dripping state classification model to obtain a classification result. If the classification result indicates an abnormal state, it is determined that the stamping equipment has an abnormal oil dripping state, where the operating environment parameters include environmental temperature, stamping oil adhesion, and stamping oil temperature.

3. The control method according to claim 2, wherein The oil dripping state data includes the oil dripping frequency, and the step of detecting whether the oil dripping state data matches the preset abnormal state data includes: If the oil dripping frequency is less than or equal to the preset target frequency threshold, it is determined that the oil dripping state data matches the preset abnormal state data; If the oil dripping frequency is greater than the preset target frequency threshold, it is determined that the oil dripping state data does not match the preset abnormal state data.

4. The control method according to claim 2, characterized in that The oil dripping state data includes the adjacent oil droplet interval time, and the step of detecting whether the oil dripping state data matches the preset abnormal state data includes: If the adjacent oil droplet interval time belongs to the abnormal time interval range, it is determined that the oil dripping state data matches the preset abnormal state data; If the adjacent oil droplet interval time belongs to the normal time interval range, it is determined that the oil dripping state data does not match the preset abnormal state data.

5. The control method according to claim 2, characterized in that, Before the step of detecting whether the oil dripping state data matches the preset abnormal state data, the method further includes: Obtain the workpiece parameter information of the current stamping workpiece, where the workpiece parameter information includes the stamping part shape, stamping part size, and / or stamping part material; Obtain the abnormal state data corresponding to the workpiece parameter information based on the preset mapping relationship, and determine the abnormal state data corresponding to the workpiece parameter information as the preset abnormal state data, where the preset mapping relationship is the corresponding relationship between different workpiece parameter information and abnormal state data.

6. The control method according to any one of claims 1 to 5, characterized in that After the step of obtaining the oil dripping state data collected by the water droplet sensor, the method further includes: Obtain the historical oil dripping state data collected by the water droplet sensor, and determine the oil dripping state change trend based on the historical oil dripping state data and the oil dripping state data; If the oil dripping state change trend matches the preset abnormal change trend, control the stamping equipment to output a prompt message.

7. The control method according to any one of claims 1 to 5, characterized in that After the step of obtaining the oil dripping state data collected by the water droplet sensor, the method further includes: Obtain the stamping part identifier and the press operating parameters of the current stamping part, and associate and store the press operating parameters, the oil dripping state data and the stamping part identifier in a preset quality traceability database, wherein the press operating parameters and the oil dripping state data are associated and stored with the stamping part identifier as stamping process information; In response to a quality anomaly traceability request, obtain the abnormal stamping part identifier according to the quality anomaly traceability request; Query the target stamping process information associated with the abnormal stamping part identifier in the preset quality traceability database according to the abnormal stamping part identifier; Generate and output a quality anomaly diagnosis report according to the target stamping process information, wherein the quality anomaly diagnosis report includes at least the cause of the anomaly.

8. A stamping device, characterized in that, The stamping equipment includes a water droplet sensor and a processor connected to each other, and the processor is used to execute the steps of the control method of the stamping equipment according to any one of claims 1 to 7.

9. The stamping equipment according to claim 8, characterized in that, The stamping equipment further includes an oil tank, an oil pipe and a bubble counter, the stamping oil in the oil tank flows into the bubble counter through the oil pipe, and the water droplet sensor is arranged on the oil pipe close to the bubble counter.

10. A readable storage medium, characterized in that, The readable storage medium includes a computer-readable storage medium, and a control program of the stamping equipment is stored on the computer-readable storage medium. When the control program of the stamping equipment is executed by a processor, the steps of the control method of the stamping equipment according to any one of claims 1 to 7 are realized.

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