Magnetic material wire cutting machining method and multi-wire cutting device thereof

Abstract

The invention belongs to the technical field of cutting, and particularly relates to a magnetic material wire cutting machining method and a multi-wire cutting device thereof.The magnetic material wire cutting machining method comprises the following steps that S1, firstly, magnetic blanks are placed in order, pure water is dropwise added to the magnetic blanks, and the magnetic blanks are frozen into ice and consolidated together at the low temperature; s2, the magnetic blank in the icing fixed state is placed on a workbench; s3, cutting the magnetic blank in the frozen fixed state to obtain a plurality of workpieces, and continuously dropwise adding low-temperature pure water and low-temperature oil into the magnetic blank during cutting; and S4, taking out the cut magnetic material blank which is kept in a frozen state, and unfreezing the magnetic material blank in a normal temperature state to obtain a dispersed workpiece. According to the linear cutting machining method for the magnetic material, a water adding and freezing method is used for replacing a traditional adhesive method, energy is saved, environment is protected, cost is reduced, meanwhile, low-temperature pure water and low-temperature oil are dripped on the magnetic material blank to enable the magnetic material blank to be kept in a frozen and fixed state, and the cut magnetic material blank cannot be scattered at the moment.

Description

Technical Field

[0001] The present invention belongs to the technical field of cutting, and particularly relates to a wire cutting processing method for magnetic materials and a multi-wire cutting device thereof. Background Art

[0002] In the field of magnetic material cutting, since the blank cutting will have an important impact on the subsequent processes, the requirements for cutting operations are getting higher and higher. At present, due to the characteristics of high production efficiency and high operation accuracy, the multi-wire cutting technology is widely used in the cutting production of semiconductor products. In the existing cutting process of magnetic blanks, glue is generally injected into the blanks for fixation, and then degumming is carried out later.

[0003] For example, a Chinese invention application with the publication number CN 110722231A discloses a wire cutting method. In this method, molten hot melt adhesive is injected into a receiving cavity containing blanks. After the hot melt adhesive solidifies, the blanks in the receiving cavity are adhered together. Then, the adhered blanks are cut by a wire cutting machine to obtain workpieces. Finally, the workpieces are scrubbed with alcohol to denature the hot melt adhesive and remove the hot melt adhesive adhered to the workpieces.

[0004] In some other wire cutting processing methods, adhesives are also required to adhere the blanks together and then cut the blanks. After cutting, methods such as hot water soaking or cleaning with a debonding agent are used to remove the adhesives adhered to the workpieces. In the existing wire cutting methods, since a sticky agent is used to adhere the blanks, debonding treatment needs to be carried out on the workpieces after cutting, which is not conducive to improving production efficiency. The sticky agent has losses during production, resulting in relatively high production auxiliary material costs.

[0005] Some existing cutting methods have used the freezing method for cutting, but heat is generated during the cutting process, which will cause the workpieces to disperse during the cutting process, affecting the cutting accuracy, and the rejection rate and loss rate are too high. Summary of the Invention

[0006] The purpose of the present invention is to provide a wire cutting processing method for magnetic materials and a multi-wire cutting device thereof, aiming to solve the technical problems in the prior art that the blanks to be cut are glued, and degumming is required after cutting, resulting in too high costs, and using the freezing method, heat generated during the cutting process will cause the blanks to disperse, affecting the cutting accuracy.

[0007] To achieve the above purpose, a wire cutting processing method for magnetic materials and a multi-wire cutting device provided by an embodiment of the present invention include the following steps:

[0008] S1, first neatly arrange the magnetic blanks, drop pure water onto the magnetic blanks, and place them at a low temperature to freeze the magnetic blanks into ice and consolidate them together;

[0009] S2. Place the magnetic blank in the frozen and fixed state on the workbench of the multi-wire cutting device;

[0010] S3. The multi-wire cutting device cuts the magnetic blank in the frozen and fixed state to obtain a plurality of workpieces. During cutting, low-temperature pure water and low-temperature oil are continuously dripped into the magnetic blank, so that the magnetic blank always remains in a frozen state during the cutting process and does not disperse;

[0011] S4. Take out the magnetic blank in the frozen state after cutting and thaw it at room temperature to obtain the dispersed workpieces.

[0012] Optionally, in step S2, a cooling plate is provided on the workbench, and the cooling plate continuously cools the magnetic blank to maintain the frozen and fixed state.

[0013] Optionally, the temperature of the cooling plate is between -20°C and -30°C.

[0014] Optionally, the temperature of the low-temperature pure water is between 1°C and 5°C, and the temperature of the low-temperature oil is between -5°C and -30°C.

[0015] Optionally, the magnetic blank is placed on a material plate and frozen and fixed on the material plate. During cutting, the magnetic blank and the material plate are placed on the workbench together for cutting. After cutting, the magnetic blank and the material plate are taken out together and placed in room temperature for thawing.

[0016] Optionally, it includes a box body; an open working cavity for operation is provided inside the box body; a cutting assembly is arranged in the working cavity, a workbench is arranged below the cutting assembly, a cooling plate is arranged on the workbench, a material plate with a frozen and fixed magnetic blank is placed on the cooling plate, a liquid dripping assembly is arranged above the workbench, and the liquid dripping assembly can drip pure water and low-temperature oil onto the magnetic blank during cutting so that the magnetic blank remains in a frozen and fixed state.

[0017] Optionally, the liquid dripping assembly includes a connecting frame and a plurality of cold oil pipes and a plurality of cold water pipes connected to the connecting frame. The cold oil pipes and the cold water pipes are arranged in a crosswise manner in sequence. A plurality of the cold oil pipes are connected to an external cold oil tank through a conduit, and a plurality of the cold water pipes are connected to an external water tank through the conduit.

[0018] Optionally, a plurality of arranged openings are provided on each of the cold water pipes and each of the cold oil pipes, and pure water and low-temperature oil are dripped onto the magnetic blank through the openings.

[0019] Optionally, the connecting frame includes two connecting parts, and each of the cold oil pipes and each of the cold water pipes are connected by passing through the two connecting parts.

[0020] Optionally, the cooling plate includes a cooling cavity; a coolant circulates in the cooling cavity, and the cooling plate is provided with a liquid inlet and a liquid outlet hole communicating with the cooling cavity.

[0021] Compared with the prior art, at least one of the above one or more technical solutions in the magnetic material wire cutting method and its multi-wire cutting device provided by the embodiments of the present invention has the following technical effects:

[0022] The magnetic material wire cutting method of the present invention uses the water addition freezing method to replace the traditional method of adhesives, which is energy-saving, environmentally friendly and reduces costs. At the same time, by dripping low-temperature pure water and low-temperature oil onto the magnetic blank, the magnetic blank is kept in a frozen and fixed state. At this time, the cut magnetic blank will not spread, which will not affect the cutting accuracy, reduce the rejection rate and loss rate. At the same time, for the cut magnetic blank, it only needs to be taken out and placed at room temperature, and there is no need to use a degreasing agent for degreasing treatment to obtain dispersed workpieces, which is economical and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 It is a schematic structural diagram of the present invention.

[0025] Figure 2 It is a schematic diagram of a partial structure of the present invention.

[0026] Figure 3 It is a schematic diagram of a partial structure of the present invention.

[0027] Among them, the reference numerals in the drawings are as follows:

[0028] 100, box body; 110, working cavity; 120, workbench; 130, cooling plate; 131, liquid inlet; 132, liquid outlet hole; 140, material plate; 150, heat preservation plate; 160, liquid collection device;

[0029] 200, cutting assembly; 210, rotating roller; 220, cutting wire;

[0030] 300, magnetic blank;

[0031] 400, liquid dropping assembly; 410, connecting part; 420, cold oil pipe; 430, cold water pipe; 440, conduit; 450, cold oil tank. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the embodiments of the present invention and should not be construed as limiting the present invention.

[0033] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0034] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more unless otherwise specifically defined.

[0035] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0036] In one embodiment of the present invention, a method for wire cutting of magnetic materials and its multi-wire cutting device include the following steps:

[0037] S1. First, neatly place the magnetic blank, drop pure water onto the magnetic blank, and place it at a low temperature to freeze the magnetic blank into ice and consolidate it together;

[0038] S2. Place the magnetic blank in the frozen and fixed state on the workbench of the multi-wire cutting device;

[0039] S3. The multi-wire cutting device cuts the magnetic blank in a frozen and fixed state to obtain a plurality of workpieces. During cutting, low-temperature pure water and low-temperature oil are continuously dripped into the magnetic blank, so that the magnetic blank always remains in a frozen state during the cutting process and will not disperse.

[0040] S4. Take out the magnetic blank in a frozen state after cutting and thaw it at room temperature to obtain the dispersed workpieces.

[0041] Specifically, the wire cutting method for magnetic materials of the present invention uses the water-adding freezing method to replace the traditional method of using adhesives, which is energy-saving, environmentally friendly and reduces costs. At the same time, by dripping low-temperature pure water and low-temperature oil onto the magnetic blank 300, the magnetic blank 300 is kept in a frozen and fixed state. At this time, the cut magnetic blank 300 will not disperse, which will not affect the cutting accuracy, reduce the defective rate and loss rate. At the same time, for the cut magnetic blank 300, only taking it out and placing it at room temperature is required, and no debinding agent is needed for debinding treatment to obtain dispersed workpieces, which is economical and environmentally friendly.

[0042] In an embodiment of the present invention, according to Figures 1-3 As shown, according to Figures 1-3 As shown, it includes a box body 100; an open working cavity 110 for operation is provided inside the box body 100; a cutting assembly 200 is arranged in the working cavity 110, a workbench 120 is arranged below the cutting assembly 200, a cooling plate 130 is arranged on the workbench 120, and a frozen and fixed magnetic blank 300 is placed on the cooling plate 130. A liquid dripping assembly 400 is provided above the workbench 120, and the liquid dripping assembly 400 can drip low-temperature pure water and low-temperature oil onto the magnetic blank 300 during cutting to keep the magnetic blank 300 in a frozen and fixed state. A material plate 140 is further arranged between the cooling plate 130 and the frozen and fixed magnetic blank 300. The magnetic blank 300 can be frozen and fixed on the material plate 140 and move together with the material plate 140.

[0043] Specifically, before cutting, the magnetic blank 300 is first frozen at low temperature. By setting the liquid dripping assembly 400 to drip low-temperature pure water and low-temperature oil onto the magnetic blank 300 during cutting, the magnetic blank 300 is kept in a frozen and fixed state. At this time, the cut magnetic blank 300 will not disperse, which will not affect the cutting accuracy, reduce the defective rate and loss rate. At the same time, for the cut magnetic blank 300, only taking it out and placing it at room temperature is required to obtain dispersed workpieces, which is economical and environmentally friendly.

[0044] Furthermore, the multi-wire cutting device further includes a driving device, and the driving device drives the cutting assembly 200 to work.

[0045] In another embodiment of the present invention, according to Figure 2 and 3As shown, the drip assembly 400 includes a connecting frame and a plurality of cold oil pipes 420 and a plurality of cold water pipes 430 connected to the connecting frame. The cold oil pipes 420 and the cold water pipes 430 are arranged crosswise in sequence. The plurality of cold oil pipes 420 are connected to an external cold oil tank 450 through a conduit 440, and the plurality of cold water pipes 430 are connected to an external water tank through a conduit 440. The connecting frame includes two connecting parts 410, and each cold oil pipe 420 and each cold water pipe 430 are connected through the two connecting parts 410. Each cold water pipe 430 and each cold oil pipe 420 are provided with a plurality of arranged openings, through which low-temperature pure water and low-temperature oil are dripped onto the magnetic material blank 300.

[0046] Specifically, the dripping component 400 also includes a bracket, which is connected to the box 100. The bracket allows the dripping component 400 to be suspended above the workbench 120. A plurality of cold oil pipes 420 and a plurality of cold water pipes 430 are arranged in an interlaced manner, and low-temperature pure water and low-temperature oil can be mixed with each other during dripping, so that when the magnetic material blank 300 is cut, the overall temperature does not reach the melting point and remains in a frozen and fixed state.

[0047] It is understandable that the length of a row of openings should correspond to the length of the platform and should not be too short, otherwise the cryogenic pure water and cryogenic oil cannot be completely dripped onto every part of the magnetic blank.

[0048] In another embodiment of the present invention, according to Figures 1-3 As shown, the cooling plate 130 includes a cooling cavity; a cooling liquid circulates in the cooling cavity, and a liquid inlet 131 and a liquid outlet 132 communicating with the cooling cavity are provided on the cooling plate 130.

[0049] Specifically, the coolant enters from the liquid inlet 131 and exits from the liquid outlet 132 , so that the temperature in the cooling chamber can be kept relatively low, thereby preventing the magnetic blank from melting.

[0050] In another embodiment of the present invention, according to Figures 1-3 As shown, the temperature of the cooling plate 130 is between -20°C and -30°C. The temperature of the low-temperature pure water is between 1°C and 5°C, and the temperature of the low-temperature oil is between -5°C and -30°C.

[0051] Specifically, the maximum temperature of the cooling plate 130 and the low-temperature oil is -20 degrees Celsius. At this temperature, the economic cost is acceptable. At the same time, the freezing effect can ensure that the magnetic blank will not melt during cutting, so that the cutting accuracy is not affected, and the problems of excessive defective rate and loss rate can be reduced.

[0052] In another embodiment of the present invention, according to Figure 1 and 2As shown, the cutting assembly 200 includes three rotating rollers 210 arranged in a triangular pattern on the box body 100 and a cutting wire 220 wound around the three rotating rollers 210; the cutting assembly 200 can cut the magnetic blank 300 on the workbench 120. Specifically, a lifting assembly is provided at the bottom of the workbench 120, and the lifting assembly can raise or lower the height of the workbench 120, and the cutting conditions can be met by adjusting the height.

[0053] In another embodiment of the present invention, according to Figure 1 and 2 As shown, a heat preservation plate 150 is provided at the bottom of the open working cavity 110, and the heat preservation plate 150 is used to keep the working cavity 110 warm. Specifically, the heat preservation plate 150 is used to slow down the rapid dissipation of cold air in the working cavity 110, can reduce the temperature of the cooling plate 130 and the low-temperature oil, and reduce energy consumption.

[0054] Furthermore, a liquid collection device 160 is also provided at the bottom of the working cavity 110, and the dripping low-temperature pure water and low-temperature oil are collected by the liquid collection device 160.

[0055] The above content is a further detailed description of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, its architecture form can be flexible and changeable, and a series of products can be derived. Just making several simple deductions or substitutions should be regarded as belonging to the patent protection scope determined by the claims submitted by the present invention.

Claims

1. A method for wire cutting of magnetic materials, characterized in that: The steps include: S1, firstly, the magnetic blanks are neatly arranged, pure water is dripped onto the magnetic blanks, and the magnetic blanks are placed under low temperature to freeze the magnetic blanks into ice and solidify them together; S2, placing the magnetic blank in a frozen state on a workbench of a multi-wire cutting device; S3, the multi-wire cutting device cuts the magnetic blank in a frozen state to obtain a plurality of workpieces, and during cutting, low-temperature pure water and low-temperature oil are continuously added to the magnetic blank, so that the magnetic blank remains frozen during the cutting process and does not fall apart; S4, taking out the cut magnetic material blanks in the frozen state, and thawing them at room temperature to obtain the dispersed workpieces.

2. The magnetic material wire cutting processing method according to claim 1, characterized in that: In step S2, a cooling plate is provided on the workbench, and the cooling plate continuously cools the magnetic blank to keep it in an ice-fixed state.

3. The magnetic material wire cutting processing method according to claim 2, characterized in that: The temperature of the cooling plate is between -20°C and -30°C.

4. The magnetic material wire cutting processing method according to claim 1, characterized in that: The temperature of the low-temperature pure water is between 1°C and 5°C, and the temperature of the low-temperature oil is between -5°C and -30°C.

5. The magnetic material wire cutting processing method according to claim 1, characterized in that: The magnetic blank is placed on a material plate and frozen and fixed on the material plate. During cutting, the magnetic blank is placed on the workbench together with the material plate for cutting. After cutting, the magnetic blank is taken out together with the material plate and thawed at room temperature.

6. A multi-wire cutting device, applied to the magnetic material wire cutting processing method according to claims 1-5, characterized in that: It comprises a box body; an open working chamber for operation is arranged in the box body; a cutting assembly is arranged in the working chamber, a workbench is arranged below the cutting assembly, a cooling plate is arranged on the workbench, a material plate with frozen and fixed magnetic material embryos is placed on the cooling plate, a dripping assembly is arranged above the workbench, and the dripping assembly can drip low-temperature pure water and low-temperature oil onto the magnetic material embryos during cutting to keep the magnetic material embryos in a frozen and fixed state.

7. The multi-wire cutting device according to claim 6, characterized in that: The drip assembly includes a connecting frame and a plurality of cold oil pipes and a plurality of cold water pipes connected to the connecting frame. The cold oil pipes and the cold water pipes are arranged crosswise in sequence. The cold oil pipes are connected to an external cold oil tank through conduits, and the cold water pipes are connected to an external water tank through the conduits.

8. The multi-wire cutting device according to claim 7, characterized in that: Each of the cold water pipes and each of the cold oil pipes is provided with a plurality of arranged openings, through which low-temperature pure water and low-temperature oil are dripped onto the magnetic material blank.

9. The multi-wire cutting device according to claim 7, characterized in that: The connecting frame includes two connecting parts, and each of the cold oil pipes and each of the cold water pipes are passed through the two connecting parts for connection.

10. The multi-wire cutting device according to any one of claims 7 to 9, characterized in that: The cooling plate comprises a cooling cavity; a cooling liquid circulates in the cooling cavity, and a liquid inlet and a liquid outlet communicating with the cooling cavity are provided on the cooling plate.

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