Method for measuring rigidity of bending machine, electronic equipment and computer readable storage medium

Abstract

The invention discloses a method for measuring the rigidity of a bending machine, electronic equipment and a computer readable storage medium, and belongs to the field of bending machines. The method comprises the steps that first acting force applied to a lower die of the bending machine by an upper die of the bending machine is obtained; acquiring a first position recorded by a position ruler of the bending machine under the first acting force; acquiring a second acting force applied to a lower die of the bending machine by an upper die of the bending machine, wherein the second acting force is different from the first acting force; acquiring a second position recorded by the position ruler of the bending machine under the second acting force; based on the first acting force, the second acting force, the first position and the second position, the rigidity of the bending machine is determined; wherein the upper die of the bending machine is in contact with the lower die of the bending machine. The device is used for measuring the rigidity of the bending machine.

Description

Technical Field

[0001] The present application belongs to the field of bending machines, and specifically relates to a method for measuring the stiffness of a bending machine, an electronic device, and a computer-readable storage medium. Background Art

[0002] The stiffness of the bending machine refers to the degree to which the frame itself is deformed by the reaction force when the bending machine is bending.

[0003] At present, the bending of sheet metal can be used to measure the stiffness of the bending machine. Specifically, the stiffness of the bending machine can be measured by bending the long plate and the short plate at the same angle.

[0004] However, the stiffness measurement method of the bending machine by bending the long plate and the short plate at the same angle requires the intervention of the long plate and the short plate, which makes the stiffness measurement more cumbersome and the measurement efficiency is low. Summary of the invention

[0005] The embodiments of the present application provide a method for measuring the stiffness of a bending machine, an electronic device, and a computer-readable storage medium, which can solve the problem that the stiffness measurement of a bending machine by bending a long plate and a short plate at the same angle requires the intervention of a long plate and a short plate, resulting in cumbersome stiffness measurement and low measurement efficiency.

[0006] In a first aspect, an embodiment of the present application provides a method for measuring the stiffness of a bending machine, comprising: Obtaining a first force applied by an upper die of a bending machine to a lower die of the bending machine; Acquire a first position recorded by a position scale of the bending machine under the first force; Acquire a second force applied by the upper die of the bending machine to the lower die of the bending machine, where the second force is different from the first force; Acquire a second position recorded by the position scale of the bending machine under the second force; determining a stiffness of the bending machine based on the first force, the second force, the first position, and the second position; Wherein, the upper die of the bending machine is in contact with the lower die of the bending machine.

[0007] In a second aspect, an embodiment of the present application provides an electronic device, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the first aspect are implemented.

[0008] In a third aspect, an embodiment of the present application provides a computer-readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed, the steps of the method described in the first aspect are implemented.

[0009] In a fourth aspect, an embodiment of the present application provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, it implements the steps of the method described in the first aspect.

[0010] At least one of the above technical solutions provided in the embodiments of the present application can achieve the following technical effects: In an embodiment of the present application, a first force applied by the upper die of the bending machine to the lower die of the bending machine is obtained; a first position recorded by the position scale of the bending machine under the first force is obtained; a second force applied by the upper die of the bending machine to the lower die of the bending machine is obtained, and the second force is different from the first force; a second position recorded by the position scale of the bending machine under the second force is obtained; based on the first force, the second force, the first position and the second position, the stiffness of the bending machine is determined; wherein the upper die of the bending machine is in contact with the lower die of the bending machine. In this way, the upper die of the bending machine is in contact with the lower die of the bending machine during the stiffness measurement process, and the stiffness is measured by squeezing the upper and lower dies without placing a plate between the upper die and the lower die, that is, without the intervention of long plates and short plates, which can solve the problem that the stiffness measurement method of the bending machine by bending the long plate and the short plate at the same angle requires the intervention of the long plate and the short plate, resulting in cumbersome stiffness measurement and low measurement efficiency. Moreover, during the measurement process, by recording the position with a position ruler, the position information can be obtained more conveniently, which further ensures that the stiffness measurement is more convenient and improves the measurement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0012] Figure 1 is a flow chart of a method for measuring the stiffness of a bending machine provided in an embodiment of the present application; Figure 2 is a flow chart of another method for measuring the stiffness of a bending machine provided in an embodiment of the present application; Figure 3 is a flow chart of another method for measuring the stiffness of a bending machine provided in an embodiment of the present application; Figure 4 is a schematic diagram of an electric bending machine provided in an embodiment of the present application; Figure 5 It is a schematic diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0014] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0015] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] The stiffness of each bending machine varies greatly due to different designs; even for the same type of bending machine, the stiffness is different due to differences in materials used in the actual production process, welding processes, etc. Therefore, it is inaccurate to set the stiffness as a constant.

[0017] Although the method of calculating the stiffness by bending long and short plates is feasible, the actual operation is cumbersome and complicated. Moreover, the bending force calculation is a theoretical value, which is not actually accurate, resulting in the final calculated stiffness being inaccurate. Since the stiffness of the bending machine will significantly affect the calculation of the bending target position, the stiffness accuracy is not high, which has a greater impact on the bending accuracy.

[0018] The method for measuring the stiffness of a bending machine provided in the embodiment of the present application does not require actual bending of sheet metal, but only requires interaction with the human-machine interface to activate the stiffness measurement function. The system can control the operation of the machine according to the internal program, and automatically drive the upper die to slide down through the slider to apply two different pressures F1 and F2 to the lower die, and record the stable positions P1 and P2 after the two pressures (due to the increase in force, the deformation of the frame increases, and the P2 position is not the same as the P1 position), and then calculate the stiffness of the bending machine according to the stiffness formula. This method is simple in principle, easy to operate, and accurate in results.

[0019] Figure 1 1 is a flow chart of a method for measuring the stiffness of a bending machine provided in an embodiment of the present application. Figure 1 The method for measuring the stiffness of a bending machine provided in an embodiment of the present application includes: Step 110, obtaining a first force applied by an upper die of a bending machine to a lower die of the bending machine; In an embodiment of the present application, the upper die may be a die in a bending machine that bends a sheet from top to bottom. The lower die may be a die fixed on a work surface in a bending machine, and may cooperate with the upper die to bend. In other words, the upper die may be the first die in a bending machine, which may move up and down; the lower die may be the second die in a bending machine, which may be fixed on a work surface. The upper die and the lower die cooperate with each other to bend the sheet. The upper die may be located above the lower die, and may slowly move downward in the direction of the lower die to apply a force to the lower die or the sheet on the work surface.

[0020] In step 110, the first force is a force generated when the upper die of the bending machine contacts the lower die of the bending machine. The first force may be a force of the upper die of the bending machine squeezing the lower die of the bending machine.

[0021] Step 120, obtaining a first position recorded by a position scale of the bending machine under the first force; In the embodiment of the present application, the position ruler can be fixedly connected to the slider of the bending machine, the slider is fixedly connected to the upper die of the bending machine, and the driver of the bending machine drives the slider and the upper die to move up and down through a motor. The position ruler can be a grating ruler, which is used to convert mechanical displacement into electrical signals.

[0022] In addition, the first position may be a position for the slide block or for the upper die. By using a position ruler to record the position, the convenience and accuracy of the stiffness measurement can be ensured.

[0023] It should be understood that the first position may be the position recorded by the position ruler when the upper die applies the first force to the lower die, for example, the position of the slider when the upper die applies the first force to the lower die.

[0024] Step 130, obtaining a second force applied by the upper die of the bending machine to the lower die of the bending machine, wherein the second force is different from the first force; In the embodiment of the present application, the second force is the force generated when the upper die of the bending machine contacts the lower die of the bending machine. In addition, the second force can be generated by the upper die of the bending machine applying the first force to the lower die of the bending machine by continuing to press down. For example, in the process of controlling the upper die to apply pressure to the lower die, the upper die can first apply a first force to the lower die, and as the upper die slowly moves downward, the upper die will apply a second force to the lower die, and the second force may not be equal to the first force, for example, the second force may be greater than the first force.

[0025] It should also be understood that the first force and the second force in the embodiment of the present application can both be actual applied forces. Specifically, the first force can be obtained based on the first motor output torque fed back by the driver of the bending machine at a first time point, and the second force can be obtained based on the second motor output torque fed back by the driver of the bending machine at a second time point, wherein the second time point is after the first time point, and the first motor output torque and the second motor output torque are different. Among them, the driver can calculate the motor output torque (including the first motor output torque and the second motor output torque) through the output current and motor parameters. For example, the driver can calculate the first motor output torque through the output current and motor parameters at the first time point, and the driver can calculate the second motor output torque through the output current and motor parameters at the second time point. In this way, the actual motor output torque can be obtained through the driver, thereby ensuring that the first force and the second force obtained are both actual force values, rather than theoretical values ​​obtained in the traditional way, ensuring the accuracy of the stiffness calculation.

[0026] Step 140, obtaining a second position recorded by the position scale of the bending machine under the second force; In the embodiment of the present application, the second position may be a position for the slider or for the upper die, and the first position is different from the second position. By using a position ruler to record the position, the convenience and accuracy of the stiffness measurement can be ensured.

[0027] It should be understood that the second position may be the position recorded by the position ruler when the upper die applies the second force to the lower die, for example, the position of the slider when the upper die applies the second force to the lower die.

[0028] Step 150, determining the stiffness of the bending machine based on the first force, the second force, the first position, and the second position; wherein an upper die of the bending machine is in contact with a lower die of the bending machine.

[0029] In an embodiment of the present application, the upper mold of the bending machine and the lower mold of the bending machine are in contact with each other during the process of applying a force (including a first force and a second force), and the upper mold of the bending machine and the lower mold of the bending machine can be separated without applying a force.

[0030] Wherein, determining the stiffness of the bending machine based on the first force, the second force, the first position and the second position in step 150 may include: calculating the first difference between the second force and the first force; calculating the second difference between the second position and the first position; and determining the stiffness of the bending machine based on the ratio of the first difference and the second difference. Specifically, the stiffness of the bending machine can be calculated by the following formula: K=(F2-F1) / (P2-P1). Wherein, F2 is the second force, F1 is the first force, and (F2-F1) is the first difference. P2 is the second position, P1 is the first position, and (P2-P1) is the second difference.

[0031] In an embodiment of the present application, a first force applied by the upper die of the bending machine to the lower die of the bending machine is obtained; a first position recorded by the position scale of the bending machine under the first force is obtained; a second force applied by the upper die of the bending machine to the lower die of the bending machine is obtained, and the second force is different from the first force; a second position recorded by the position scale of the bending machine under the second force is obtained; based on the first force, the second force, the first position and the second position, the stiffness of the bending machine is determined; wherein the upper die of the bending machine is in contact with the lower die of the bending machine. In this way, the upper die of the bending machine is in contact with the lower die of the bending machine during the stiffness measurement process, and the stiffness is measured by squeezing the upper and lower dies without placing a plate between the upper die and the lower die, that is, without the intervention of long plates and short plates, which can solve the problem that the stiffness measurement method of the bending machine by bending the long plate and the short plate at the same angle requires the intervention of the long plate and the short plate, resulting in cumbersome stiffness measurement and low measurement efficiency. Moreover, during the measurement process, by recording the position with a position ruler, the position information can be obtained more conveniently, which further ensures that the stiffness measurement is more convenient and improves the measurement efficiency.

[0032] Figure 2 1 is a flow chart of a method for measuring the stiffness of a bending machine provided in an embodiment of the present application. Figure 2 The method for measuring the stiffness of a bending machine provided in an embodiment of the present application includes: Step 210, receiving a target instruction for obtaining mechanical stiffness; The bending machine provided in the embodiment of the present application can provide a control interface, and the user can issue a control command to the bending machine through the control interface. For example, the user can press a button on the control interface to trigger stiffness measurement. Once the user presses the button for stiffness measurement, the bending machine can receive a target instruction for obtaining mechanical stiffness.

[0033] Step 220 , in response to the target instruction, controlling the slider to drive the upper die to move downward to apply pressure to the lower die.

[0034] In the embodiment of the present application, after receiving the target instruction for obtaining the mechanical stiffness, the bending machine can respond to the target instruction and control the slider to drive the upper die to move downward to apply pressure to the lower die.

[0035] Step 230, obtaining a first force applied by an upper die of a bending machine to a lower die of the bending machine; Step 240, obtaining a first position recorded by a position scale of the bending machine under the first force; Step 250, obtaining a second force applied by the upper die of the bending machine to the lower die of the bending machine, wherein the second force is different from the first force; Step 260, obtaining a second position recorded by the position scale of the bending machine under the second force; Step 270, determining the stiffness of the bending machine based on the first force, the second force, the first position, and the second position; wherein an upper die of the bending machine is in contact with a lower die of the bending machine.

[0036] The relevant contents of steps 230 to 270 may refer to the previous discussion.

[0037] In an embodiment of the present application, a first force applied by the upper die of the bending machine to the lower die of the bending machine is obtained; a first position recorded by the position scale of the bending machine under the first force is obtained; a second force applied by the upper die of the bending machine to the lower die of the bending machine is obtained, and the second force is different from the first force; a second position recorded by the position scale of the bending machine under the second force is obtained; based on the first force, the second force, the first position and the second position, the stiffness of the bending machine is determined; wherein the upper die of the bending machine is in contact with the lower die of the bending machine. In this way, the upper die of the bending machine is in contact with the lower die of the bending machine during the stiffness measurement process, and the stiffness is measured by squeezing the upper and lower dies without placing a plate between the upper die and the lower die, that is, without the intervention of long plates and short plates, which can solve the problem that the stiffness measurement method of the bending machine by bending the long plate and the short plate at the same angle requires the intervention of the long plate and the short plate, resulting in cumbersome stiffness measurement and low measurement efficiency. Moreover, during the measurement process, the position can be recorded by the position ruler, which can more conveniently obtain the position information, further ensure that the stiffness measurement is more convenient and improve the measurement efficiency. In addition, the bending machine can be controlled to automatically perform actions and then measure the stiffness, which can improve the measurement efficiency compared to the manual control method.

[0038] Figure 3 1 is a flow chart of a method for measuring the stiffness of a bending machine provided in an embodiment of the present application. Figure 3 The method for measuring the stiffness of a bending machine provided in an embodiment of the present application includes: Step 310, obtaining a first force applied by an upper die of a bending machine to a lower die of the bending machine, wherein the upper die of the bending machine is in contact with the lower die of the bending machine; Step 320, obtaining a first position recorded by a position scale of the bending machine under the first force; Step 330, obtaining a second force applied by the upper die of the bending machine to the lower die of the bending machine, wherein the second force is different from the first force; Step 340, obtaining a second position recorded by the position scale of the bending machine under the second force; Step 350, calculating a first difference between the second force and the first force; Step 360, calculating a second difference between the second position and the first position; Step 370: Determine the stiffness of the bending machine based on the ratio of the first difference to the second difference.

[0039] In step 370, the stiffness of the bending machine can be calculated by the following formula: K=(F2-F1) / (P2-P1). K is the stiffness of the bending machine, F2 is the second force, F1 is the first force, and (F2-F1) is the first difference. P2 is the second position, P1 is the first position, and (P2-P1) is the second difference.

[0040] In an embodiment of the present application, a first force applied by the upper die of the bending machine to the lower die of the bending machine is obtained; a first position recorded by the position scale of the bending machine under the first force is obtained; a second force applied by the upper die of the bending machine to the lower die of the bending machine is obtained, and the second force is different from the first force; a second position recorded by the position scale of the bending machine under the second force is obtained; based on the first force, the second force, the first position and the second position, the stiffness of the bending machine is determined; wherein the upper die of the bending machine is in contact with the lower die of the bending machine. In this way, the upper die of the bending machine is in contact with the lower die of the bending machine during the stiffness measurement process, and the stiffness is measured by squeezing the upper and lower dies without placing a plate between the upper die and the lower die, that is, without the intervention of long plates and short plates, which can solve the problem that the stiffness measurement method of the bending machine by bending the long plate and the short plate at the same angle requires the intervention of the long plate and the short plate, resulting in cumbersome stiffness measurement and low measurement efficiency. Moreover, during the measurement process, by recording the position with a position ruler, the position information can be obtained more conveniently, which further ensures that the stiffness measurement is more convenient and improves the measurement efficiency.

[0041] Figure 4 Schematic diagram of a bending machine provided in an embodiment of the present application. Figure 4 The bending machine provided in the embodiment of the present application may include: an upper die 410, a lower die 420, a slider 430, a position ruler 440, a ball screw 450, a motor 460 and a pulley 470. Figure 4As shown, the position ruler 440 is fixedly connected to the slider 430 of the bending machine, and the slider 430 is fixedly connected to the upper die 410 of the bending machine. The driver of the bending machine drives the slider 430 and the upper die 410 to move up and down through the motor 460. Specifically, after the driver drives the motor 460, the motor 460 can drive the ball screw 450 to rotate through the pulley 470, and the rotation of the ball screw 450 can drive the slider 430 to move up and down. Since the slider 430 and the upper die 410 are fixedly connected, the movement of the slider 430 can drive the upper die 410 to move. At the same time, the position ruler 440 is fixed on the slider 430, and the movement of the slider 430 can also drive the position ruler 440 to move. In this way, since the position ruler reading head 490 remains stationary, that is, in a fixed state, the position ruler reading head 490 can read different positions of the slider 430 as the position ruler 440 moves, and then obtain the first position and the second position of the slider 430.

[0042] Reference Figure 4 In the embodiment of the present application, the process of measuring the stiffness of the bending machine can be as follows: 1) The motor output torque is fed back to the system through the driver, and the actual force is converted using the transmission structure. Among them, the motor output torque can be calculated by the driver through the output current and motor parameters. After calculating the motor output torque, the motor output torque can be used as a known quantity.

[0043] 2) Obtain the position of the slider by using a position ruler (such as a grating ruler) connected to both sides of the slider; 3) After the bending machine mold is installed, click the "Get Mechanical Stiffness" button on the human-machine interface. The system controls the slider to drive the mold to slowly slide down to apply pressure to the lower mold. When the actual force is detected to be the first force F1, the first position P1 at this time is recorded, and the slider continues to press down; when the actual force is detected to be the second force F2, the second position P2 at this time is recorded, and the measurement ends when the slider rises back to the force of 0.

[0044] The first position and the second position are both positions of the slider, and the first position is different from the second position. The first force is obtained based on the first motor output torque fed back by the driver of the bending machine at a first time point, and the second force is obtained based on the second motor output torque fed back by the driver of the bending machine at a second time point, wherein the second time point is after the first time point, and the first motor output torque is different from the second motor output torque.

[0045] 4) During the recovery of the slider, the stiffness of the bending machine is calculated by the stiffness formula K=(F2-F1) / (P2-P1) and saved in the system to provide accurate values ​​for subsequent bending position calculations.

[0046] In the application of bending machine system, the calculated bending position Pt cannot be used directly. It is also necessary to calculate the frame deformation Po according to the bending machine stiffness and bending tonnage, and add the two to get the final target position P of the slider, that is, P=Pt+Po. The target position P of the slider is the exact position reached by the slider during actual bending.

[0047] The method for measuring the stiffness of a bending machine provided in the embodiment of the present application measures the stiffness of a bending machine by extruding upper and lower dies instead of bending sheet metal. This does not require the participation of sheet metal, thereby saving materials and making measurement more convenient, thereby improving measurement efficiency. The actual force value is obtained by applying force through an electric motor instead of obtaining a theoretical force value through a bending calculation formula. Since the actual force value is more accurate than the theoretical force value, a higher accuracy of stiffness measurement can be ensured. In addition, the system controls the automatic movement of the bending machine to measure the stiffness, thereby ensuring the efficiency of stiffness measurement.

[0048] like Figure 5 As shown, the embodiment of the present application also provides an electronic device 500. The electronic device 500 includes: a processor 510 and a memory 520, and the memory 520 stores a program or instruction. When the program or instruction is executed by the processor 510, the steps of any method described above (for example, a method for measuring the stiffness of a bending machine) are implemented. For example, when the program is executed by the processor 510, the following process is implemented: obtaining a first force applied by the upper die of the bending machine to the lower die of the bending machine; obtaining a first position recorded by the position scale of the bending machine under the first force; obtaining a second force applied by the upper die of the bending machine to the lower die of the bending machine, the second force being different from the first force; obtaining a second position recorded by the position scale of the bending machine under the second force; determining the stiffness of the bending machine based on the first force, the second force, the first position, and the second position; wherein the upper die of the bending machine is in contact with the lower die of the bending machine. In this way, during the process of measuring the stiffness, the upper die of the bending machine is in contact with the lower die of the bending machine, and the stiffness is measured by squeezing the upper and lower dies without placing a plate between the upper and lower dies, that is, without the intervention of long and short plates. This can solve the problem that the stiffness measurement of the bending machine by bending the long and short plates at the same angle requires the intervention of long and short plates, resulting in cumbersome stiffness measurement and low measurement efficiency. Moreover, during the measurement process, the position can be recorded by the position ruler, so that the position information can be obtained more conveniently, further ensuring that the stiffness measurement is more convenient and improving the measurement efficiency.

[0049] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of each embodiment of the method for measuring the stiffness of a bending machine are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0050] The processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk.

[0051] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0052] An embodiment of the present application provides a computer program product, which is stored in a storage medium. The program product is executed by at least one processor to implement the various processes of the above-mentioned method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0053] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0054] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for enabling a terminal (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0055] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A method for measuring the stiffness of a bending machine, characterized in that: include: Obtaining a first force applied by an upper die of a bending machine to a lower die of the bending machine; Acquire a first position recorded by a position scale of the bending machine under the first force; Acquire a second force applied by the upper die of the bending machine to the lower die of the bending machine, where the second force is different from the first force; Acquire a second position recorded by the position scale of the bending machine under the second force; determining a stiffness of the bending machine based on the first force, the second force, the first position, and the second position; Wherein, the upper die of the bending machine is in contact with the lower die of the bending machine.

2. The method according to claim 1, characterized in that The second force is generated by the upper die of the bending machine continuing to press down on the lower die of the bending machine on the basis of applying the first force.

3. The method according to claim 1, characterized in that The first acting force and the second acting force are both actual applied forces.

4. The method according to claim 3, characterized in that The first force is obtained based on the output torque of the first motor fed back by the driver of the bending machine at a first time point, and the second force is obtained based on the output torque of the second motor fed back by the driver of the bending machine at a second time point, wherein the second time point is after the first time point, and the output torque of the first motor is different from the output torque of the second motor.

5. The method according to any one of claims 1 to 4, characterized in that: The position ruler is fixedly connected to a slider of the bending machine, the slider is fixedly connected to the upper die of the bending machine, and the driver of the bending machine drives the slider and the upper die to move up and down through a motor.

6. The method according to claim 5, characterized in that The first position and the second position are both positions of the slider, and the first position is different from the second position.

7. The method according to claim 5, characterized in that Before obtaining the first force applied by the upper die of the bending machine to the lower die of the bending machine, the method further includes: receiving a target instruction for obtaining mechanical stiffness; In response to the target instruction, the slider is controlled to drive the upper die to move downward to apply pressure to the lower die.

8. The method according to any one of claims 1 to 4, characterized in that: The determining the stiffness of the bending machine based on the first force, the second force, the first position and the second position includes: calculating a first difference between the second force and the first force; calculating a second difference between the second position and the first position; Based on a ratio of the first difference and the second difference, a stiffness of the bending machine is determined.

9. An electronic device, characterized in that: The method comprises a processor and a memory, wherein the memory stores a program or instruction running on the processor, and when the program or instruction is executed by the processor, the steps of the method according to any one of claims 1 to 8 are implemented.

10. A computer-readable storage medium, characterized in that: The medium stores a program or an instruction, and when the program or the instruction is executed, the steps of the method according to any one of claims 1 to 8 are implemented.

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