Multi-wire cutting method and process for preparing special-shaped permanent magnetic ferrite

Abstract

The invention discloses a multi-wire cutting method and process for preparing special-shaped permanent magnetic ferrite, and relates to the technical field of permanent magnetic ferrite cutting. Comprising the following steps: setting an initial tension value and an initial feed amount value of a cutting line according to basic information of a target special-shaped permanent magnetic ferrite to obtain an initial tension item and an initial feed item; and setting an increase value and a time change value to obtain an increase item and a time change item. The cutting line tension sensor is introduced, the hardness of the permanent magnetic ferrite material is evaluated and the amplitude limit value is set according to the tension degree of the cutting line in the cutting process, and when the fluctuation amplitude of the initial tension value reaches the amplitude limit value, the adjustment feeding item is reduced based on the increase amplitude value, so that the cutting line feeding amount is automatically adjusted and controlled, and the cutting efficiency is improved. And the problem of low cutting efficiency in the cutting process caused by nonuniform hardness distribution in products with different hardness or the same product is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of permanent magnet ferrite cutting, and specifically to a multi-wire cutting method and process for the preparation of special-shaped permanent magnet ferrites. Background Art

[0002] Special-shaped permanent magnet ferrite is a special-shaped permanent magnetic material mainly made of ferrite compounds. This material has certain magnetism and can maintain the magnetic field permanently. It is widely used in motors, speakers, sensors and other electronic devices. The main feature is strong magnetism. Special-shaped permanent magnet ferrite has high coercivity and remanence, enabling it to maintain stable magnetism under a strong external magnetic field. Moreover, ferrite materials usually have good corrosion resistance and can be used in different environments for a long time. During the preparation of special-shaped permanent magnet ferrite, cutting equipment is needed to cut the special-shaped permanent magnet ferrite, and wire cutting is a widely used cutting method. It uses the electric spark method for cutting and is suitable for complex geometric shapes.

[0003] A cutting device and cutting method for an inclined-oriented magnet with a patent publication number of CN109273238A are provided with a plurality of angle-limiting mechanisms on a plate body for restricting the placement direction of magnetic blanks. The angle-limiting mechanisms are angle wedges and are convenient for disassembly and assembly. The angle wedges are processed according to the same program, aiming to ensure the consistency of the use angles. The magnetic blanks are neodymium iron boron square blanks, and the plate body is a lining plate. The angle-limiting mechanism is parallel to and completely coincides with one of the sides of the plate body. The included angle between the angle-limiting mechanism and the plate body is the angle of the required magnetic declination. By replacing the angle-limiting mechanism according to the customer's needs, inclined-oriented magnets with different magnetic declinations can be obtained. The angles of the angle-limiting mechanisms are usually 20°, 22° and 30°. A multi-wire cutting machine above the plate body cuts the magnetic blanks. Through the reciprocating movement of the multi-wire cutting machine, thousands of thin slices are cut simultaneously. This operation is simple, facilitating the processing of the angle of the magnetic declination of the magnetic blanks, realizing the batch production of inclined-oriented magnets, and having a low processing cost. During the production process, due to the limitation of the angle-limiting mechanism, there will be no deviation in the angle of the magnetic declination of the magnetic blanks, improving the production efficiency and enabling mass production.

[0004] In the above and similar technical solutions, when cutting permanent magnet ferrite materials, the feed speed is manually set according to the hardness and cutting amount of the permanent magnet ferrite materials. However, this method of designing cutting process parameters relying on personal experience requires multiple tests to ensure the processing dimensions and quality requirements, and cannot further improve the cutting efficiency. Moreover, the product quality control cannot meet the existing high-quality requirements. When cutting the same permanent magnet ferrite material at multiple angles or in multiple processes, after one cutting process adjusts the cutting amount according to the hardness of the target permanent magnet ferrite, the adjustment value cannot be shared with the remaining cutting processes, resulting in the need for all cutting processes to adjust the cutting amount accordingly after actually contacting the different hardness data of the target permanent magnet ferrite, further leading to the problem of low cutting efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a multi-wire cutting method and process for the preparation of special-shaped permanent magnet ferrites to solve the problems raised in the above background technology.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: A multi-wire cutting method and process for the preparation of special-shaped permanent magnet ferrites, including:

[0007] According to the basic information of the target special-shaped permanent magnet ferrite, set the initial tension value and the initial feed amount value of the cutting wire to obtain the initial tension term and the initial feed term;

[0008] Set the increase value and the time change value to obtain the increase term and the time change term;

[0009] Based on the time change term, adjust the feed amount with the combined result of the increase term and the initial feed term to obtain the adjusted feed term, and adjust the feed amount value of the cutting wire based on the adjusted feed term;

[0010] Obtain the tension fluctuation amplitude of the cutting wire, set the amplitude limit value, and judge whether the tension fluctuation amplitude of the cutting wire exceeds the amplitude limit value. When the fluctuation amplitude of the initial tension term reaches the amplitude limit value, reduce the adjusted feed term based on the increase value, thereby automatically controlling the feed amount of the cutting wire;

[0011] Obtain the target cutting process when the fluctuation amplitude of the initial tension term reaches the amplitude limit value to obtain the target cutting term;

[0012] Based on the target cutting term, obtain the target special-shaped permanent magnet ferrite data corresponding to the target cutting process in real time to obtain the material information term, and at the same time obtain the overall data of the target special-shaped permanent magnet ferrite to obtain the overall information term;

[0013] Based on the material information items, the overall information items are regionally divided to obtain region division items. Based on the region division items, the distance information of the remaining cutting processes from the region division items is obtained, and the adjustment feed items are pre-reduced, thus realizing data sharing of the cutting processes.

[0014] Furthermore, the basic information of the target special-shaped permanent ferrite includes color information, weight information, and thickness information. The methods for obtaining the initial tension item and the initial feed item include:

[0015] The cutting line is in a no-load state, and both ends of the cutting line are connected to the cutting equipment. At this time, the tension value of the cutting line is zero, and thus the initial tension item is obtained;

[0016] Based on the combination of the color information, weight information, and thickness information of the target special-shaped permanent ferrite, the target information item is obtained. Based on the target information item, the search range is set. Based on the search range, the past information items that match the target information item in the past data are obtained, and the average feed value of the past information items is obtained to get the initial feed item.

[0017] Furthermore, the methods for obtaining the increase item and the time change item include:

[0018] Set a fixed growth ratio, and based on the combined result of the initial feed item and the fixed growth ratio, the increase item is obtained;

[0019] Set a fixed time ratio, and based on the basic information of the target special-shaped permanent ferrite, obtain the cutting completion time of the target special-shaped permanent ferrite to get the predicted time item. Based on the combined result of the fixed time ratio and the predicted time item, the time change item is obtained.

[0020] Furthermore, the method for reducing the adjustment feed item by the increase value includes: setting the target number of amplitude comparison values, determining the fluctuation level of the tension fluctuation amplitude of the cutting line based on the amplitude comparison values, and at the same time setting the same reduction ratio as the target number. The reduction ratios correspond to the amplitude comparison values respectively. Determine the position of the tension fluctuation amplitude of the cutting line in the amplitude comparison values to obtain the target reduction ratio. Based on the target reduction ratio, adjust the time change value to obtain the updated change value. Based on the updated change value, reduce the adjustment feed item by the increase value until the fluctuation amplitude of the initial tension item is lower than the amplitude limit value.

[0021] Furthermore, the target special-shaped permanent ferrite data corresponding to the target cutting process in real time includes color data. The methods for obtaining the material information items and the overall information items include:

[0022] Arrange at least two first target devices to perform uniform light irradiation on the target special-shaped permanent ferrite, and the first target devices are respectively distributed on both sides of the target special-shaped permanent ferrite;

[0023] At least two second target devices are arranged to obtain color data of the target shaped permanent ferrite corresponding to the target cutting process in real time, and at the same time obtain overall color data of the target shaped permanent ferrite to obtain material information items and overall information items.

[0024] Furthermore, the target shaped permanent ferrite data corresponding to the target cutting process in real time includes particle size data, and the method for obtaining the material information item and the overall information item includes:

[0025] The surface of the target shaped permanent ferrite is cleaned by the third target device, and the request range is set. The target shaped permanent ferrite point corresponding to the target cutting process in real time is used as the request point. The request point is combined with the request range to obtain the target range item. The target range item and the target shaped permanent ferrite as a whole are laser scanned by the fourth target device to obtain the material information item and the overall information item.

[0026] Furthermore, the method for obtaining the region division item includes: based on the overall information item, obtaining the overall distribution information of the target shaped permanent ferrite, isolating the corresponding information area on the surface of the target shaped permanent ferrite based on the information corresponding to the material information item, and then obtaining the region division item.

[0027] Furthermore, the method for pre-reducing the adjustment feed item includes: obtaining the distance information of the remaining cutting process distance area division items through a distance acquisition device to obtain a target distance set, the target distance set includes at least one target distance item, and simultaneously obtaining the reduction value of the target cutting process adjustment feed item when the fluctuation amplitude of the initial tension item reaches the amplitude limit value to obtain the target reduction item, based on the target distance set and the set time change value, according to the set increase value, judging whether the adjustment feed item corresponding to the target distance set can be reduced to the target reduction item; when the adjustment feed item corresponding to the target distance set can be reduced to the target reduction item, pre-reducing the adjustment feed item corresponding to the target distance set with the increase value; when the adjustment feed item corresponding to the target distance set cannot be reduced to the target reduction item, setting a pre-reduction value, and adjusting the increase value based on the pre-reduction value.

[0028] Furthermore, a multi-wire cutting process for preparing special-shaped permanent ferrites uses the multi-wire cutting method for preparing special-shaped permanent ferrites described above, comprising:

[0029] Setting module: according to the basic information of the target special-shaped permanent ferrite, the initial tension value and the initial feed value of the cutting line are set to obtain the initial tension item and the initial feed item, the increase value and the time change value are set to obtain the increase item and the time change item, and based on the time change item, the feed amount is adjusted with the combination result of the increase item and the initial feed item to obtain the adjustment feed item, and the feed value of the cutting line is adjusted based on the adjustment feed item;

[0030] Adjustment module: Obtain the tension fluctuation amplitude of the cutting wire, set the amplitude limit value, and determine whether the tension fluctuation amplitude of the cutting wire exceeds the amplitude limit value. When the fluctuation amplitude of the initial tension term reaches the amplitude limit value, reduce the adjustment feed term based on the increase value, thereby automatically regulating the cutting wire feed amount;

[0031] Division module: Obtain the target cutting process when the fluctuation amplitude of the initial tension term reaches the amplitude limit value, obtain the target cutting term, obtain the target special-shaped permanent magnet ferrite data corresponding to the target cutting process in real time based on the target cutting term, obtain the material information term, and at the same time obtain the overall data of the target special-shaped permanent magnet ferrite to obtain the overall information term. Divide the overall information term based on the material information term to obtain the region division term;

[0032] Pre-adjustment module: Based on the region division term, obtain the distance information between the remaining cutting processes and the region division term, and pre-reduce the adjustment feed term, thereby realizing data sharing of the cutting process.

[0033] Compared with the prior art, the beneficial effects of the present invention are:

[0034] The multi-wire cutting method and process for preparing special-shaped permanent magnet ferrite introduce a cutting wire tension sensor, evaluate the hardness of the permanent magnet ferrite material according to the tension degree of the cutting wire during the cutting process, set the initial tension value and the initial feed amount value, and at the same time set the increase value and the time change value. Adjust the initial feed amount value with the increase value to obtain the adjustment feed term, and monitor the fluctuation amplitude of the initial tension term in real time. Set the amplitude limit value. When the fluctuation amplitude of the initial tension value reaches the amplitude limit value, reduce the adjustment feed term based on the increase value until the fluctuation amplitude of the initial tension value is lower than the amplitude limit value, thereby automatically regulating the cutting wire feed amount and ensuring the problem of low cutting efficiency caused by products with different hardnesses or uneven hardness distribution in the same product during the cutting process.

[0035] At the same time, when the fluctuation amplitude of the initial tension term reaches the amplitude limit value in the target cutting process, obtain the material data corresponding to the target cutting process in real time to obtain the material information term, and at the same time obtain the overall data of the target material to obtain the overall information term. Divide the overall information term based on the material information term to obtain the region division term, and then realize the pre-judgment effect of the hardness region of the target material. Based on the region division term, obtain the distance information between the remaining cutting processes and the region division term, and pre-reduce the adjustment feed term according to the set increase value, thereby realizing the data sharing effect of the cutting process and further improving the cutting efficiency. Description of the Drawings

[0036] Figure 1Schematic diagram of the overall process of the present invention;

[0037] Figure 2 Schematic diagram of the retrieval point and retrieval range of the present invention;

[0038] Figure 3 Schematic diagram of the positions of the regional division items and the overall information items in the color data of the present invention;

[0039] Figure 4 Schematic diagram of the positions of the regional division items and the overall information items in the granularity data of the present invention. Detailed implementation manners

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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 of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0041] Permanent ferrite materials are widely used in motors, speakers, sensors and other fields due to their excellent magnetic properties and relatively low cost. However, in the processing process, especially in the cutting process, the characteristics of permanent ferrite materials bring many challenges to the cutting process. Traditional cutting methods often rely on the experience of processing personnel, and manually adjust the feed speed to adapt to the hardness and cutting amount of the material. This method of setting cutting process parameters based on experience can meet production needs to a certain extent, but there are also many disadvantages. First of all, the hardness of cutting permanent ferrite materials is part of its physical properties. It usually has high hardness and brittleness, which makes it easy to break and collapse during the cutting process. Therefore, the design of the cutting process must adapt to the characteristics of the material itself. In addition, different batches of permanent ferrite materials may have slight composition differences, resulting in uneven hardness, which further increases the complexity of cutting. In order to avoid quality problems during the cutting process, operators often need to conduct multiple experiments to find the appropriate feed speed and cutting parameters, which not only increases the time cost, but also increases the cost of production. This may also lead to waste of materials. Therefore, when actually cutting permanent ferrite, the above problems need to be considered. The technical solution provided by the present application introduces a cutting line tension sensor, evaluates the hardness of the permanent ferrite material according to the tension of the cutting line during the cutting process, sets the initial tension value and the initial feed value, obtains the initial tension item and the initial feed item, sets the increase value and the time change value, obtains the increase item and the time change item, and the increase value is set as a fixed percentage value of the initial feed item. Based on the time change item, the feed amount is adjusted with the combination of the increase item and the initial feed item to obtain the adjusted feed item, and the fluctuation amplitude of the initial tension item is monitored in real time, and the amplitude limit value is set. When the fluctuation amplitude of the initial tension item reaches the amplitude limit value, the adjusted feed item is reduced based on the increase value until the fluctuation amplitude of the initial tension item is lower than the amplitude limit value, thereby automatically adjusting the cutting line feed amount to ensure that the problem of low cutting efficiency caused by uneven hardness distribution in products of different hardness or the same product during the cutting process is solved. Specifically, in the present application, Figure 1 As shown, steps S100-S700 are included.

[0042] Step S100: according to the basic information of the target special-shaped permanent ferrite, the initial tension value and the initial feed value of the cutting line are set.

[0043] It should be noted that the basic information of the target special-shaped permanent ferrite includes color information, weight information, and thickness information. The methods for obtaining the initial tension term and the initial feed term are as follows: The cutting wire is in a no-load state, and both ends of the cutting wire are connected to the cutting equipment. At this time, the tension value of the cutting wire is zero, and thus the initial tension term is obtained. And based on the combination of the color information, weight information, and thickness information of the target special-shaped permanent ferrite, the target information term is obtained. Based on the target information term, the search range is set, and the search range is 10. Based on the search range, the previous information term that matches the target information term in the previous data is obtained, and the average feed value of the previous information term is obtained to get the initial feed term.

[0044] In the specific implementation process, the color information, weight information, and thickness information of a certain special-shaped permanent ferrite are obtained. At this time, based on the set search range, the feed values of 10 previous special-shaped permanent ferrites in the previous data that are the same as the color information, weight information, and thickness information of this special-shaped permanent ferrite are obtained, which are 120mm 2 / min, 125mm 2 / min, 125mm 2 / min, 122mm 2 / min, 120mm 2 / min, 120mm 2 / min, 110mm 2 / min, 120mm 2 / min, 115mm 2 / min, and 115mm 2 / min. At this time, according to the average feed value of the previous information, the initial feed term of this special-shaped permanent ferrite is obtained as 119.2mm 2 / min.

[0045] Step S200: Set the increase value and the time change value to obtain the increase term and the time change term.

[0046] It should be noted that the methods for obtaining the increase term and the time change term include: setting a fixed growth ratio, and the fixed growth ratio is 1%. Based on the combined result of the initial feed term and the fixed growth ratio, the increase term is obtained; setting a fixed time ratio, and the fixed time ratio is 5%. Based on the basic information of the target special-shaped permanent ferrite, the cutting completion time of the target special-shaped permanent ferrite is obtained to get the predicted time term. Based on the combined result of the fixed time ratio and the predicted time term, the time change term is obtained.

[0047] In the specific implementation process, the initial feed term of a certain special-shaped permanent ferrite is obtained as 119.2mm 2 / min. At this time, according to the set fixed growth ratio, the increase term is 1.192. At the same time, the cutting completion time of the special-shaped permanent ferrite is obtained as 300 s. At this time, according to the set fixed time ratio, the time change term is obtained as 15 s.

[0048] Step S300: Based on the time change term, adjust the feed rate with the combined result of the increase term and the initial feed term to obtain the adjusted feed term, and adjust the feed rate value of the cutting line based on the adjusted feed term.

[0049] It should be noted that according to the obtained time change term, that is, at fixed time intervals, the feed rate value is increased by the increase term, so as to gradually increase the cutting speed during the wire cutting process.

[0050] Step S400: Obtain the tension fluctuation amplitude of the cutting line, set the amplitude limit value, and determine whether the tension fluctuation amplitude of the cutting line exceeds the amplitude limit value.

[0051] It should be noted that when the fluctuation amplitude of the initial tension term reaches the amplitude limit value, the adjusted feed term is reduced based on the increase value, so as to automatically control the feed rate of the cutting line. The method of reducing the adjusted feed term by the increase value includes: setting three amplitude reference values, determining the fluctuation level of the tension fluctuation amplitude of the cutting line based on the amplitude reference values. The amplitude reference values are 10 N, 15 N, and 20 N respectively. At the same time, set the reduction ratios with the same number as the target quantity. The reduction ratios are 0.25, 0.50, and 0.75 respectively. The reduction ratios correspond to the amplitude reference values respectively. Determine the position of the tension fluctuation amplitude of the cutting line in the amplitude reference value to obtain the target reduction ratio. Adjust the time change value based on the target reduction ratio to obtain the updated change value. Based on the updated change value, reduce the adjusted feed term by the increase value until the fluctuation amplitude of the initial tension term is lower than the amplitude limit value.

[0052] In the specific implementation process, the adjusted feed term of a special-shaped permanent ferrite is obtained as 110 mm 2 / min, the increase term is 1 mm 2 / min, the time change term is 15 s. At this time, the tension fluctuation of the cutting line is 10 N. At this time, according to the set reduction ratio, the target reduction ratio is 0.25. Based on the target reduction ratio for the time change value, the updated change value is obtained as 11.25. Based on the updated change value, the adjusted feed term is reduced by the increase value.

[0053] Step S500: Obtain the target cutting process when the fluctuation amplitude of the initial tension term reaches the amplitude limit value to obtain the target cutting term. Based on the target cutting term, obtain the target special-shaped permanent ferrite data corresponding to the target cutting process in real time to obtain the material information term. At the same time, obtain the overall data of the target special-shaped permanent ferrite to obtain the overall information term.

[0054] It should be noted that when the fluctuation amplitude of the initial tension item reaches the amplitude limit value, the cutting process that reaches the amplitude limit value is determined as the target cutting process, and the target shaped permanent magnet ferrite data of the target cutting process is obtained, and the data includes color data. The method for obtaining the material information item and the overall information item includes: arranging two first target devices to evenly irradiate the target shaped permanent magnet ferrite, the first target device is a white light lamp, and the first target devices are respectively distributed on both sides of the target shaped permanent magnet ferrite to avoid shadow and color interference; arranging two second target devices, the second target device is a high-definition camera, to obtain the color data of the target shaped permanent magnet ferrite corresponding to the target cutting process in real time, and at the same time obtain the overall color data of the target shaped permanent magnet ferrite to obtain the material information item and the overall information item.

[0055] As shown in 2, it should be noted that when the fluctuation amplitude of the initial tension item reaches the amplitude limit value, the cutting process that reaches the amplitude limit value is determined as the target cutting process, and the target shaped permanent magnet ferrite data of the target cutting process is obtained, and the data includes particle size data. The method for obtaining the material information item and the overall information item includes: surface cleaning of the target shaped permanent magnet ferrite is performed by a third target device, the third target device is an air blower, and a request range is set, the request range is a square area with a side length of 1 mm, and the target shaped permanent magnet ferrite point corresponding to the target cutting process in real time is used as the request point, the request point is combined with the request range, and the request point is the center point of the side length of the request range to obtain the target range item, and the target range item and the target shaped permanent magnet ferrite as a whole are laser scanned by a fourth target device, and the fourth target device is a laser scanner, which scans the particle size data in the contour information to obtain the material information item and the overall information item.

[0056] Step S600: Divide the overall information item into regions based on the material information item to obtain region division items.

[0057] It should be noted that the method for obtaining the region division item includes: based on the overall information item, obtaining the overall distribution information of the target special-shaped permanent ferrite, isolating the corresponding information area on the surface of the target special-shaped permanent ferrite based on the information corresponding to the material information item, and then obtaining the region division item.

[0058] like Figure 3 As shown, in the specific implementation process, the RGB values ​​of the color data of the target special-shaped permanent ferrite corresponding to the target cutting process in real time are 35.50.70 respectively, and the RGB values ​​of the color data of the target special-shaped permanent ferrite obtained by the overall information item are 40.50.67 respectively. At this time, the area division item is the area with RGB of 35.50.70, and the area is isolated from the overall information item.

[0059] like Figure 4As shown, in the specific implementation process, the particle size data of the target special-shaped permanent magnet ferrite corresponding to the target cutting process is obtained to be between 101m and 501m. The overall information item obtains the particle size data of the target special-shaped permanent magnet ferrite to be between 101m and 1501m. At this time, the region division item is that the particle size data is between 101m and 501m, and this region is isolated from the overall information item.

[0060] Step S700: Based on the region division item, obtain the distance information of the remaining cutting processes from the region division item, and perform a preliminary amplitude reduction on the adjustment feed item, thereby realizing data sharing of the cutting process.

[0061] It should be noted that the method for performing a preliminary amplitude reduction on the adjustment feed item includes: obtaining the distance information of the remaining cutting processes from the region division item through a distance acquisition device to obtain a target distance set. The target distance set includes at least one target distance item of the remaining cutting processes from the region division item. At the same time, obtain the amplitude reduction value of the adjustment feed item of the target cutting process when the fluctuation amplitude of the initial tension item reaches the amplitude limit value to obtain a target amplitude reduction item. Based on the target distance set and the set time change value, according to the set increase value, determine whether the adjustment feed item corresponding to the target distance set can be decreased to the target amplitude reduction item. When the adjustment feed item corresponding to the target distance set can be decreased to the target amplitude reduction item, perform a preliminary amplitude reduction on the adjustment feed item corresponding to the target distance set with the increase value. When the adjustment feed item corresponding to the target distance set cannot be decreased to the target amplitude reduction item, set a preliminary reduction value, and the preliminary reduction value is 50%. Adjust the increase value based on the preliminary reduction value.

[0062] In the specific implementation process, the adjustment feed item of a certain special-shaped permanent magnet ferrite is obtained to be 100mm 2 / min, and the increase item is 1mm 2 / min. The target distance item from the region division item is 10mm. The cross-sectional length of this special-shaped permanent magnet ferrite is 50mm. The amplitude reduction value of the adjustment feed item of the target cutting process when the fluctuation amplitude of the initial tension item reaches the amplitude limit value is 90mm 2 / min, and the time change item is 15s. At this time, according to the set amplitude reduction ratio, the adjustment feed item corresponding to the target distance set of this process can be decreased to the target amplitude reduction item. At this time, a preliminary amplitude reduction is performed on the adjustment feed item corresponding to the target distance set with the increase value.

[0063] A multi-wire cutting process for the preparation of special-shaped permanent ferrite uses the above-mentioned multi-wire cutting method for the preparation of special-shaped permanent ferrite, including: a setting module: according to the basic information of the target special-shaped permanent ferrite, set the initial tension value and the initial feed rate value of the cutting wire to obtain the initial tension term and the initial feed term, set the increase value and the time change value to obtain the increase term and the time change term, based on the time change term, adjust the feed rate with the combined result of the increase term and the initial feed term to obtain the adjusted feed term, and adjust the feed rate value of the cutting wire based on the adjusted feed term; an adjustment module: obtain the tension fluctuation amplitude of the cutting wire, set the amplitude limit value, and judge whether the tension fluctuation amplitude of the cutting wire exceeds the amplitude limit value. When the fluctuation amplitude of the initial tension term reaches the amplitude limit value, reduce the adjusted feed term based on the increase value, thereby automatically controlling the feed rate of the cutting wire; a division module: obtain the target cutting process when the fluctuation amplitude of the initial tension term reaches the amplitude limit value to obtain the target cutting term, obtain the target special-shaped permanent ferrite data corresponding to the target cutting process in real time based on the target cutting term to obtain the material information term, and at the same time obtain the overall data of the target special-shaped permanent ferrite to obtain the overall information term, and divide the overall information term based on the material information term to obtain the regional division term; a pre-adjustment module: based on the regional division term, obtain the distance information of the remaining cutting processes from the regional division term, and pre-reduce the adjusted feed term, thereby realizing data sharing of the cutting process.

[0064] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended embodiments and their equivalents.

Claims

1. A multi-wire cutting method for preparing special-shaped permanent ferrite, characterized in that: include: According to the basic information of the target special-shaped permanent ferrite, the initial tension value and the initial feed value of the cutting line are set to obtain the initial tension item and the initial feed item; Set the increase value and time change value to obtain the increase item and time change item; Based on the time change item, the feed amount is adjusted by combining the increase item and the initial feed item to obtain an adjusted feed item, and the feed amount value of the cutting line is adjusted based on the adjusted feed item; Obtain the tension fluctuation amplitude of the cutting line, set the amplitude limit value, and determine whether the tension fluctuation amplitude of the cutting line exceeds the amplitude limit value. When the fluctuation amplitude of the initial tension item reaches the amplitude limit value, the feed adjustment item is reduced based on the increase value, thereby automatically controlling the cutting line feed amount; Obtain the target cutting process when the fluctuation amplitude of the initial tension item reaches the fluctuation amplitude limit value, and obtain the target cutting item; Based on the target cutting item, the target special-shaped permanent ferrite data corresponding to the target cutting process in real time is obtained to obtain the material information item, and at the same time, the overall data of the target special-shaped permanent ferrite is obtained to obtain the overall information item; Based on the material information item, the overall information item is divided into regions to obtain the regional division items. Based on the regional division items, the distance information of the remaining cutting processes from the regional division items is obtained, and the feed adjustment item is pre-reduced, thereby realizing data sharing of the cutting process.

2. The multi-wire cutting method for preparing special-shaped permanent ferrite according to claim 1, characterized in that: The basic information of the target shaped permanent ferrite includes color information, weight information and thickness information, and the method for obtaining the initial tension item and the initial feed item includes: The cutting line is in a no-load state, and both ends of the cutting line are connected to the cutting equipment respectively. At this time, the tension value of the cutting line is zero, and the initial tension term is obtained; Based on the combination of color information, weight information and thickness information of the target special-shaped permanent ferrite, a target information item is obtained. Based on the target information item, a search range is set. Based on the search range, past information items that match the target information item in past data are obtained, and the average feed value of the past information items is obtained to obtain an initial feed item.

3. The multi-wire cutting method for preparing special-shaped permanent ferrite according to claim 1, characterized in that: The method for obtaining the increase item and the time change item includes: A fixed growth ratio is set, and the increase term is obtained based on the combination result of the initial feed term and the fixed growth ratio; A fixed time ratio is set, and based on the basic information of the target shaped permanent ferrite, the cutting completion time of the target shaped permanent ferrite is obtained to obtain a predicted time item, and based on the combination result of the fixed time ratio and the predicted time item, a time change item is obtained.

4. The multi-wire cutting method for preparing special-shaped permanent ferrite according to claim 1, characterized in that: The method for reducing the adjustment feed item by the increase value includes: setting a target number of amplitude benchmark values, determining the fluctuation level of the tension fluctuation amplitude of the cutting line based on the amplitude benchmark values, and setting a reduction ratio that is the same as the target number, the reduction ratios respectively corresponding to the amplitude benchmark values, determining that the tension fluctuation amplitude of the cutting line is at the position of the amplitude benchmark values, obtaining a target reduction ratio, adjusting a time change value based on the target reduction ratio, obtaining an updated change value, and reducing the adjustment feed item based on the updated change value by the increase value until the fluctuation amplitude of the initial tension item is lower than the amplitude limit value.

5. The multi-wire cutting method for preparing special-shaped permanent ferrite according to claim 1, characterized in that: The target shaped permanent ferrite data corresponding to the target cutting process in real time includes color data, and the method for obtaining material information items and overall information items includes: Arrange at least two first target devices to evenly irradiate the target special-shaped permanent ferrite magnet, and the first target devices are respectively distributed on both sides of the target special-shaped permanent ferrite magnet; At least two second target devices are arranged to obtain color data of the target shaped permanent ferrite corresponding to the target cutting process in real time, and at the same time obtain overall color data of the target shaped permanent ferrite to obtain material information items and overall information items.

6. The multi-wire cutting method for preparing special-shaped permanent ferrite according to claim 5, characterized in that: The target shaped permanent ferrite data corresponding to the target cutting process in real time includes particle size data, and the method for obtaining material information items and overall information items includes: The surface of the target shaped permanent ferrite is cleaned by the third target device, and the request range is set. The target shaped permanent ferrite point corresponding to the target cutting process in real time is used as the request point. The request point is combined with the request range to obtain the target range item. The target range item and the target shaped permanent ferrite as a whole are laser scanned by the fourth target device to obtain the material information item and the overall information item.

7. The multi-wire cutting method for preparing special-shaped permanent ferrite according to claim 1, characterized in that: The method for obtaining the region division item includes: obtaining the overall distribution information of the target shaped permanent ferrite based on the overall information item, isolating the corresponding information area on the surface of the target shaped permanent ferrite based on the information corresponding to the material information item, and then obtaining the region division item.

8. The multi-wire cutting method for preparing special-shaped permanent ferrite according to claim 1, characterized in that: The method for pre-reducing the adjustment feed item includes: obtaining distance information of the remaining cutting process distance area division items through a distance acquisition device to obtain a target distance set, the target distance set includes at least one target distance item, and simultaneously obtaining the reduction value of the target cutting process adjustment feed item when the fluctuation amplitude of the initial tension item reaches the amplitude limit value to obtain the target reduction item, based on the target distance set and the set time change value, according to the set increase value, judging whether the adjustment feed item corresponding to the target distance set can be reduced to the target reduction item, when the adjustment feed item corresponding to the target distance set can be reduced to the target reduction item, pre-reducing the adjustment feed item corresponding to the target distance set with the increase value, when the adjustment feed item corresponding to the target distance set cannot be reduced to the target reduction item, setting a pre-reduction value, and adjusting the increase value based on the pre-reduction value.

9. A multi-wire cutting process for preparing special-shaped permanent ferrite, characterized in that: A multi-wire cutting method for preparing a special-shaped permanent ferrite according to any one of claims 1 to 8 is used, comprising: Setting module: according to the basic information of the target special-shaped permanent ferrite, the initial tension value and the initial feed value of the cutting line are set to obtain the initial tension item and the initial feed item, the increase value and the time change value are set to obtain the increase item and the time change item, and based on the time change item, the feed amount is adjusted with the combination result of the increase item and the initial feed item to obtain the adjustment feed item, and the feed value of the cutting line is adjusted based on the adjustment feed item; Adjustment module: obtain the tension fluctuation amplitude of the cutting line, set the amplitude limit value, and determine whether the tension fluctuation amplitude of the cutting line exceeds the amplitude limit value. When the fluctuation amplitude of the initial tension item reaches the amplitude limit value, the adjustment feed item is reduced based on the increase value, thereby automatically adjusting the cutting line feed amount; Division module: obtaining the target cutting process when the fluctuation amplitude of the initial tension item reaches the fluctuation amplitude limit value, obtaining the target cutting item, obtaining the target special-shaped permanent ferrite data corresponding to the target cutting process in real time based on the target cutting item, obtaining the material information item, and simultaneously obtaining the overall data of the target special-shaped permanent ferrite, obtaining the overall information item, and dividing the overall information item into regions based on the material information item to obtain the region division item; Pre-adjustment module: Based on the area division item, the distance information of the remaining cutting processes from the area division item is obtained, and the feed adjustment item is pre-reduced, thereby realizing data sharing of the cutting process.

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