A method, recording medium and system for determining continuous mode parameters

Abstract

The present invention belongs to the field of stamping technology, and in particular, relates to a method for determining continuous die parameters, comprising the following steps: calculating the theoretical maximum value of SPM, adjusting the work sequence and the shape of the blade to reduce the forming work; calculating the total work of a single stamping cycle, and then comparing it with the energy curve of the stamping equipment; determining a reasonable SPM setting value and using it to calculate the feeding speed of the production line that matches it. This method overcomes the problem that the process design fails, the mold is scrapped, or the production efficiency is low because the product SPM setting value does not meet the maximum output energy requirement of the equipment. The present invention also provides a non-transient readable recording medium storing the method program and a system containing the medium, and the program can be called through a processing circuit to execute the above method.

Description

Technical Field

[0001] The invention belongs to the field of stamping technology and discloses a method for determining continuous die parameters, a recording medium storing a program capable of executing the method and a system. Background Art

[0002] With the development of manufacturing technology, the continuous die production process has been more and more widely used in the stamping field due to its advanced manufacturability and high production efficiency, which has enhanced the competitiveness of stamping parts companies.

[0003] The factors that affect SPM (stamping frequency per minute) during the production of continuous die equipment include the feeding speed of the production line feeder, the different molding heights of the products and the equipment stroke. Different SPM values ​​correspond to different equipment output energies. The molding work required for the part stamping must match the equipment output energy for normal production. The equipment stroke must be greater than the product molding stroke, otherwise the equipment will be damaged or even the mold will be scrapped. Figure 2 It can be clearly seen from the energy curve of a 400T continuous die equipment that the SPM value corresponds to the equipment energy curve. Between the two inflection points of the curve (i.e., SPM is between 26 and 40), the equipment energy tends to be stable, which is conducive to the stable production of parts, while the equipment energy outside this area tends to be attenuated, which is not conducive to the stable production of parts.

[0004] The existing conventional method includes the following steps:

[0005] 1. Design the mold first, then debug to determine the maximum SPM that can be achieved.

[0006] 2. Calculate the product forming work, and then compare it with the energy corresponding to the above-mentioned maximum SPM in the equipment energy curve to determine whether the equipment can meet stable production requirements.

[0007] 3. If the equipment cannot meet the requirements for stable production, the mold should be rectified.

[0008] This approach brings the following technical problems:

[0009] 1. The process design failed and the mold was scrapped because the product SPM did not match the equipment motor energy and product work.

[0010] 2. After the maximum SPM is determined, the equipment runs at full capacity and parts cannot be produced normally and stably. It can only run barely after reducing the SPM, resulting in low production efficiency. Summary of the invention

[0011] In view of the above problems, the present invention provides a method for determining continuous mode parameters, and the specific scheme includes the following steps:

[0012] S1. Calculate the theoretical maximum value of SPM based on the conventional feeding speed of the production line and the minimum spacing between workstations;

[0013] S2. Reduce the forming work in a single cycle of the equipment by adjusting the forming work sequence of each station of the mold and the shape of the punching blade;

[0014] S3. Calculate the sum of the forming work and the work done by feeding and withdrawing the material in a single cycle as the total work, and then compare it with the energy curve of the stamping equipment; if the coordinate point of the total work corresponding to the theoretical maximum value of SPM on the equipment energy curve is below the equipment energy curve, then use the theoretical maximum value of SPM as the SPM set value; if the coordinate point of the total work corresponding to the theoretical maximum value of SPM on the equipment energy curve is above the equipment energy curve, then move the coordinate point horizontally to find the nearest intersection of the moving trajectory and the equipment energy curve, and use the SPM value corresponding to the intersection as the SPM set value;

[0015] S4. If the total power coordinate point corresponding to the theoretical maximum value of SPM on the equipment energy curve is located above the equipment energy curve, and the total power coordinate point cannot be placed on the equipment energy curve by adjusting the SPM setting value, replace the stamping equipment with higher output energy and repeat steps S1-S3;

[0016] S5. Calculate the matching feeding speed according to the SPM setting value output in step S3.

[0017] This parameter determination method fundamentally ensures that the total stamping work corresponding to the final set continuous die parameters will not exceed the workmanship capacity of the equipment, avoiding mold scrapping caused by process design failure.

[0018] Preferably, step S3 also includes a verification step: the SPM setting value located between the two inflection points of the equipment energy curve is valid; if the SPM setting value is in the area outside the above two inflection points, the SPM setting value is determined to be invalid, and the SPM value corresponding to the inflection point closest to the SPM setting value is output as the SPM setting value.

[0019] This solution enables the designed process parameters to operate within the stable working range of the equipment, maximizing the working capacity of the equipment.

[0020] In the further step S2, the shape of the punching edge is set to be wavy.

[0021] This design can effectively reduce the work done in the blanking process, save energy and reduce consumption, and improve work efficiency.

[0022] Another embodiment of the present invention is to provide a non-transitory readable recording medium for storing one or more programs including a plurality of instructions. When the instructions are executed, the processing circuit will execute the above-mentioned method for determining a continuous mode parameter.

[0023] Another embodiment of the present invention is to provide a detection system for low-value insulators of distribution lines, including a processing circuit and a memory electrically coupled thereto, wherein the memory is configured to store at least one program, wherein the program includes a plurality of instructions, and the processing circuit runs the program to execute the above-mentioned continuous mode parameter determination method. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the relationship between the strokes of the stamping equipment in the embodiment of the present invention;

[0025] Figure 2 It is a device energy curve diagram in an embodiment of the present invention;

[0026] Figure 3 It is a schematic diagram of continuous die forming in an embodiment of the present invention. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making innovative efforts are within the scope of protection of the present invention.

[0028] like Figure 1-3 As shown, a method for determining continuous mode parameters provided by the present invention comprises the following steps:

[0029] The feeder feeds a step distance: B = 148mm; this is also the minimum spacing between workstations. For this workpiece, further reduction of the workstations will cause interference. The feeder's normal feeding speed: Vfeed = 24m / min; the equipment stroke is ST: 176mm; the stamping work stroke ST3 = 132mm.

[0030] Calculate the SPM of continuous die production as follows:

[0031] Calculate the time required for the feeder to deliver one step B Second;

[0032] According to the known ST / ST3 value, the crank rotation angle corresponding to the punching stroke is calculated as 90°+α=90°+30°=120°; thus, the angle β allowed for the feeder to feed in one cycle is β=(90°-30°)×2=120°;

[0033] If the safety factor is set to 1.5, the shortest time the crank should take for each 120° rotation is 0.37×1.5=0.555 seconds. It is estimated that the crank takes at least 3×0.555=1.665 seconds for each rotation; therefore, the maximum SPM=60 / 1.665=36.

[0034] Use a wavy blade at the punching station and adjust the height of the lowest point of the upper die at each station so that when the wavy blade cuts into the product 2mm, the lowest point of the upper die at the forming station just touches the workpiece. The stamping process parameters are as follows:

[0035] Forming stroke: 27mm; punching stroke: 3.6mm; stripping stroke: 105mm; total forming force: 840KN; stripping force: 270KN; punching force: 1815KN;

[0036] The total power that a stamping cycle equipment should provide

[0037] W=(27 / 1000*840000+105 / 1000*270000+3.6 / 1000*1815)

[0038] =22680+28350+6534=57564(J)=57.56(kJ)

[0039] On the equipment energy curve of the stamping machine, when SPM=36, the corresponding maximum output power is 65kJ; obviously, 36 can be used as the set value of SPM.

[0040] For another embodiment, only the forming stroke is 24mm, the stripping stroke is 50mm, the total forming force is 1600KN, and the other inherent parameters of the mold and the equipment remain unchanged. We still use the above calculation method to obtain the maximum SPM=54, total power=58.43 (kJ). We found that in the equipment energy curve diagram of the stamping machine, the coordinate values ​​corresponding to SPM=54 and total power=58.43 (kJ) are above the equipment energy curve, that is, the equipment cannot output so much energy. When the SPM value corresponding to the nearest intersection formed by the horizontal movement of the coordinate point on the image and the intersection with the equipment energy curve is 42, the equipment can just meet the total stamping power requirement, but this point is outside the two inflection points of the equipment energy curve, and belongs to the area where the equipment cannot output energy smoothly. Therefore, the SPM setting value is invalid, and the SPM setting value is set to the SPM at the closest inflection point, that is, the output SPM setting value is 40; the corresponding feeding time t=0.75 seconds for one step forward; the matching feeding speed is V=12m / min.

[0041] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computers, available storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program codes.

[0042] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0043] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0044] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0045] Compiling the above method steps into a program and then storing it on a hard disk or other non-transitory storage medium constitutes the technical solution of "a non-transitory readable recording medium" of the present invention; and electrically connecting the storage medium to a computer processor and completing the setting of stamping parameters through data processing constitutes the technical solution of "a continuous die parameter determination system" of the present invention.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for determining continuous mode parameters, characterized in that The following steps are involved: S1. Calculate the theoretical maximum value of SPM based on the conventional feeding speed of the production line and the minimum spacing between workstations; S2. Reduce the forming work in a single cycle of the equipment by adjusting the forming work sequence of each station of the mold and the shape of the punching blade; S3. Calculate the sum of the forming work and the work done by feeding and withdrawing the material in a single cycle as the total work, and then compare it with the energy curve of the stamping equipment; if the coordinate point of the total work corresponding to the theoretical maximum value of SPM on the equipment energy curve is below the equipment energy curve, then use the theoretical maximum value of SPM as the SPM set value; if the coordinate point of the total work corresponding to the theoretical maximum value of SPM on the equipment energy curve is above the equipment energy curve, then move the coordinate point horizontally to find the nearest intersection of the moving trajectory and the equipment energy curve, and use the SPM value corresponding to the intersection as the SPM set value; S4. If the total power coordinate point corresponding to the theoretical maximum value of SPM on the equipment energy curve is located above the equipment energy curve, and the total power coordinate point cannot be placed on the equipment energy curve by adjusting the SPM setting value, replace the stamping equipment with higher output energy and repeat steps S1-S3; S5. Calculate the matching feeding speed according to the SPM setting value output in step S3.

2. A method for determining continuous mode parameters according to claim 1, characterized in that: Step S3 also includes a verification step: the SPM setting value between the two inflection points of the equipment energy curve is valid. If the SPM setting value is outside the two inflection points, the SPM setting value is determined to be invalid, and the SPM value corresponding to the inflection point closest to the SPM setting value is output as the SPM setting value.

3. A method for determining continuous mode parameters according to claim 2, characterized in that: In step S2, the shape of the punching edge is set to be wavy.

4. A method for determining continuous mode parameters as claimed in claim 3, characterized in that: The steps for adjusting the forming work sequence of each station of the mold in step S2 are: by designing the height difference of each station on the mold, it is ensured that the forming starts when the punching station has a punching stroke of 2 mm.

5. A non-transitory readable recording medium for storing one or more programs including a plurality of instructions, characterized in that: When the instruction is executed, the processing circuit is caused to execute a method for determining a continuous mode parameter according to any one of claims 1 to 4.

6. A continuous mode parameter determination system, comprising a processing circuit and a memory electrically coupled thereto, characterized in that: The memory configuration stores at least one program, wherein the program includes a plurality of instructions, and the processing circuit runs the program to execute a method for determining a continuous mode parameter as claimed in any one of claims 1 to 4.

Images