CN111822701A - Forming die, equipment and forming process for testing magnetic core - Google Patents
Forming die, equipment and forming process for testing magnetic core Download PDFInfo
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- CN111822701A CN111822701A CN202010727864.9A CN202010727864A CN111822701A CN 111822701 A CN111822701 A CN 111822701A CN 202010727864 A CN202010727864 A CN 202010727864A CN 111822701 A CN111822701 A CN 111822701A
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- 238000012360 testing method Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 claims abstract description 17
- 238000005245 sintering Methods 0.000 claims abstract description 14
- 238000007493 shaping process Methods 0.000 claims abstract description 6
- 238000000465 moulding Methods 0.000 claims description 28
- 239000000463 material Substances 0.000 claims description 5
- 230000004323 axial length Effects 0.000 claims description 4
- 238000009966 trimming Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000006978 adaptation Effects 0.000 claims 1
- 239000011148 porous material Substances 0.000 claims 1
- 238000005452 bending Methods 0.000 abstract description 7
- 239000012778 molding material Substances 0.000 abstract description 7
- 238000003780 insertion Methods 0.000 description 13
- 230000037431 insertion Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 4
- 238000005498 polishing Methods 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
- B22F3/03—Press-moulding apparatus therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/255—Magnetic cores made from particles
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a forming die, equipment and a forming process for testing a magnetic core, wherein the forming die comprises: the mould comprises a mould body, wherein a mould cavity is arranged in the mould body, a forming area for manufacturing a product is arranged in the mould cavity, a distance is reserved between the forming area and one side wall of the mould cavity, and a connecting part can be formed at the U-shaped opening of the product through the distance when the product is formed. Through placing molding material in the die cavity and sintering in order tentatively to obtain the product, the U type opening part of this product is formed with connecting portion, avoids the product to produce residual stress when the shaping, and can prevent that the product from receiving factors such as cold and leading to its U type opening part to take place bending deformation after the sintering. After the product is formed, redundant connecting parts are removed by means of grinding and the like to obtain the test magnetic core, so that the product quality is improved, and the production cost is reduced.
Description
Technical Field
The invention relates to the technical field of powder metallurgy punch forming, in particular to a forming die, equipment and a forming process for testing a magnetic core.
Background
As shown in fig. 1, the test core is an ultra-thin type and has a multi-level step design, and has a bifurcated opening to form a U-shaped opening structure. For the test magnetic core, the test magnetic core is generally obtained by engraving ferrite blocks by using an engraving machine, but the production mode has the problems of high labor intensity and low production efficiency; if the conventional die-casting forming die is adopted for production, the finished product can be bent and deformed after being taken out, so that the product quality is influenced, and even the finished product cannot be used, and the production cost is increased.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the forming die for testing the magnetic core, which can prevent the product from deforming and improve the product quality.
The invention also provides equipment for applying the forming die for testing the magnetic core.
The invention also provides a forming process applying the equipment.
According to the first aspect of the invention, the forming die for testing the magnetic core comprises: the mould comprises a mould body, wherein a mould cavity is arranged in the mould body, a forming area for manufacturing a product is arranged in the mould cavity, a space is formed between the forming area and one side wall of the mould cavity, and the product can form a connecting part at a U-shaped opening through the space when being formed.
The forming die for testing the magnetic core provided by the embodiment of the invention at least has the following beneficial effects: through placing molding material in the die cavity and sintering in order tentatively to obtain the product, the U type opening part of this product is formed with connecting portion, avoids the product to produce residual stress when the shaping, and can prevent that the product from receiving factors such as cold and leading to its U type opening part to take place bending deformation after the sintering. After the product is formed, redundant connecting parts are removed by means of grinding and the like to obtain the test magnetic core, so that the product quality is improved, and the production cost is reduced.
According to some embodiments of the present invention, the mold cavity has a rectangular structure, the molding zone includes a first molding surface and a second molding surface, the first molding surface is lower than the second molding surface, the second molding surface is sequentially divided into a first region and two second regions, the two second regions are symmetrically disposed with respect to the first region, an upper surface of the second region is lower than an upper surface of the first region, a front end of the first region extends to the first molding surface, the first region is provided at a middle portion thereof with a protruding portion connected to two side surfaces of the mold cavity, and the gap is located between a rear end portion of the protruding portion and a rear side wall of the mold cavity.
According to some embodiments of the invention, the die body comprises: the mould comprises an upper mould, a lower mould and a mould core, wherein a first female mould is arranged on one end surface of the upper mould, a concave part is arranged in the middle of the first female mould, and a first distance is formed from the rear end part of the concave part to the outer side surface of the upper mould; the female die is provided with a die hole; the lower die assembly is structurally inserted in the die hole, a second concave die is formed by the lower die assembly and the die hole in a matched mode, the first concave die and the second concave die enclose the die cavity, the boss is arranged on the lower die assembly, a second space is formed between the rear end portion of the boss and the second concave die, and the first space and the second space are matched to form the space.
According to some embodiments of the invention, the drag assembly comprises: the convex part is positioned in the middle of the middle rod and can be inserted into the concave part, and the convex part comprises a first boss extending along the axial direction on the top surface of the middle rod and a second boss extending along the radial direction on the side surface of the middle rod; the lower die is provided with an insertion channel which is matched with the middle rod and deviates from the middle part, the insertion channel is of a rectangular structure, the end parts of the side walls of two opposite sides on the insertion channel are in a step shape, the other side wall of the insertion channel is provided with a groove corresponding to the second boss, the second interval is positioned between one side wall, opposite to the groove, on the insertion channel and the outer side surface of the lower die, the middle rod is inserted in the insertion channel, and the topmost surface of the lower die is lower than the top surface of the middle rod.
According to some embodiments of the invention, the recess is a hole extending through the upper die, and the cross section of the upper die is a Chinese character 'hui'.
According to some embodiments of the invention, a vertical distance value from an upper end surface of the convex portion to a bottom surface of the second concave die is smaller than an axial length value of the duct.
According to some embodiments of the invention, a first base is connected to a bottom of the middle rod, and the middle rod is eccentrically arranged on the first base.
According to some embodiments of the invention, the edge of the die hole is provided with a spout chute cooperating with the second female die.
An apparatus according to an embodiment of the second aspect of the present invention comprises a molding die for testing a magnetic core according to the above-described embodiment of the first aspect of the present invention.
The device according to the embodiment of the invention has at least the following advantages: install the forming die of this test magnetic core, through placing molding material in the die cavity and sintering in order tentatively to obtain the product, the U type opening part of this product is formed with connecting portion, avoids the product to produce residual stress when the shaping, and can prevent that the sintering back product from receiving factors such as cold and leading to its U type opening part to take place bending deformation. After the product is formed, redundant connecting parts are removed by means of grinding and the like to obtain the test magnetic core, so that the product quality is improved, and the production cost is reduced.
According to the forming process of the embodiment of the third aspect of the invention, the device of the embodiment of the second aspect of the invention comprises the following steps: molding, namely placing a molding material in the mold cavity and sintering to obtain a product preliminarily; and trimming, namely removing redundant rim charge of the product obtained in the step.
The forming process provided by the embodiment of the invention at least has the following beneficial effects: through placing molding material in the die cavity and sintering in order tentatively to obtain the product, the U type opening part of this product is formed with connecting portion, avoids the product to produce residual stress when the shaping, and can prevent that the product from receiving factors such as cold and leading to its U type opening part to take place bending deformation after the sintering. After the product is formed, redundant connecting parts are removed by means of grinding and the like to obtain the test magnetic core, so that the product quality is improved, and the production cost is reduced.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of a test core;
fig. 2 is a schematic diagram of a product obtained by using the molding die for testing a magnetic core according to the embodiment of the present invention.
FIG. 3 is a schematic structural diagram of a mold for testing a magnetic core according to an embodiment of the present invention;
FIG. 4 is a schematic view of the structure of FIG. 3 from another perspective;
FIG. 5 is a schematic structural diagram of a master mold;
FIG. 6 is a schematic cross-sectional view of FIG. 5;
FIG. 7 is a schematic view of the drag assembly;
FIG. 8 is a schematic structural view of a middle rod;
FIG. 9 is a schematic view of the structure of FIG. 8 from another perspective;
FIG. 10 is a schematic view of a portion of the structure of FIG. 8;
FIG. 11 is a schematic view of the lower mold;
fig. 12 is a schematic view of fig. 11 from another perspective.
Reference numerals:
the mold comprises a mold body 10, a first molding surface 11, a second molding surface 12, a first region 121, a second region 122, and a protrusion 123;
An upper mold 40, a first concave mold 41, a concave part 42 and a second base 43;
a master model 50, a die hole 51 and a material spraying chute 52;
the lower die assembly 60, the second concave die 61, the middle rod 62, the first base 621, the lower die 63, the insertion channel 631, the groove 632 and the third base 633.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the positional descriptions, such as the directions of up, down, front, rear, etc., referred to herein are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular direction, and thus should not be construed as limiting the present invention.
In the description of the present invention, if there are first and second described only for the purpose of distinguishing technical features, it is not understood that relative importance is indicated or implied or that the number of indicated technical features or the precedence of the indicated technical features is implicitly indicated or implied.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
As shown in fig. 1, 2, 3 and 4, a mold for testing a magnetic core according to an embodiment of the first aspect of the present invention includes: the die comprises a die body 10, a die cavity is arranged in the die body, a forming area for manufacturing a product 20 is arranged in the die cavity, a space 30 is arranged between the forming area and one side wall of the die cavity, and a connecting part 21 can be formed at a U-shaped opening of the product 20 through the space 30 during forming.
According to the forming die for testing the magnetic core, the forming material is placed in the die cavity and sintered to obtain the product 20 preliminarily, the connecting part 21 is formed at the U-shaped opening of the product 20, residual stress generated in the forming process of the product 20 is avoided, and the bending deformation of the U-shaped opening caused by the cooling and other factors of the sintered product 20 can be prevented. After the product 20 is formed, redundant connecting parts 21 are removed by means of grinding and the like to obtain the test magnetic core as shown in fig. 1, so that the quality of the product 20 is improved, and the production cost is reduced.
As shown in fig. 2 to 12, in some embodiments of the present invention, the mold cavity has a rectangular structure, the molding zone includes a first molding surface 11 and a second molding surface 12, the first molding surface 11 is lower than the second molding surface 12, the second molding surface 12 is sequentially divided into a first region 121 and two second regions 122, the two second regions 122 are symmetrically disposed with respect to the first region 121, an upper surface of the second region 122 is lower than an upper surface of the first region 121, a front end of the first region 121 extends to the first molding surface 11, the first region 121 is provided at a middle portion thereof with a protrusion 123 connected to both side surfaces of the mold cavity, and the space 30 is located between a rear end portion of the protrusion 123 and a rear side wall of the mold cavity. By adopting the structure, the product 20 shown in fig. 2 is manufactured, the operation is convenient, the structure is simple, and the precision requirement of the product 20 is ensured.
As shown in fig. 1 to 12, in some embodiments of the present invention, the die body 10 includes: the die comprises an upper die 40, wherein a first concave die 41 is arranged on one end surface of the upper die 40, a concave part 42 is arranged in the middle of the first concave die 41, and a first distance 31 is formed between the rear end part of the concave part 42 and the outer side surface of the upper die 40; the female die 50, the female die 50 is provided with a die hole 51; the lower die assembly 60 is structurally inserted into the die hole 51, a second female die 61 is formed by the lower die assembly 60 and the die hole 51 in a matched mode, a die cavity is formed by the first female die 41 and the second female die 61 in a surrounding mode, the protruding portion 123 is arranged on the lower die assembly 60, a second distance is formed between the rear end portion of the protruding portion 123 and the second female die 61, and the first distance 31 is matched with the second distance 32 to form the distance 30. And in the split type assembly, the molding powder is filled in the second female die 61, and the upper die 40 moves towards the lower die assembly 60 and is matched with the lower die assembly, so that the product 20 is conveniently processed and molded, and the precision requirement of the product 20 can be ensured.
In some embodiments, the end surface of the upper mold 40 facing the lower mold 60 may also be a plane, which is not limited herein.
In some embodiments of the present invention, drag assembly 60 comprises: the middle rod 62 is provided with a convex part 123 in the middle of the middle rod 62 and can be inserted into the concave part 42, and the convex part 123 comprises a first boss extending along the axial direction on the top surface of the middle rod 62 and a second boss extending along the radial direction on the side surface of the middle rod 62; the lower die 63 is provided with an insertion channel 631 which is matched with the middle rod 62 and deviates from the middle part, the insertion channel 631 is of a rectangular structure, the end parts of the two opposite side walls of the insertion channel 631 are in a step shape, the other side wall of the insertion channel 631 is provided with a groove 632 corresponding to the second boss, the second distance 32 is located between one side wall, opposite to the groove 632, of the insertion channel 631 and the outer side surface of the lower die 63, the middle rod 62 is inserted into the insertion channel 631, and the topmost surface of the lower die 63 is lower than the top surface of the middle rod 62. Simple structure, the equipment is convenient, is convenient for change, and can ensure the required precision of product 20.
It should be noted that the first concave die 41 and the second concave die 61 are both rectangular structures; the width of the pitch 30 is equal to the width of the first pitch 31 and the width of the second pitch 32; the first area 121 is the top surface of the middle rod 62, and the second area 122 is the end surface from the inner side wall of the mounting channel 631 to the outer side surface of the lower mold 63; the lower die is a fixed die, the upper die 40 is a movable die, and the upper die 40 can move towards the lower die to complete die assembly; the recessed portion 42 is used for avoiding the protruding portion 123, and the protruding portion 123 is inserted into the recessed portion 42 during mold closing; the connecting part 21 is a connecting wall of a U-shaped opening of the product 20, and the connecting wall and the product 20 are integrally formed and can block the U-shaped opening, so that the manufactured product 20 is closed and has a shape like a Chinese character 'hui'; other devices such as a lifting device for driving the upper mold 40 to move toward the lower mold assembly 60 are mounted on the upper mold 40.
As shown in fig. 3 and 4, in some embodiments of the present invention, the recess 42 is a hole penetrating through the upper mold 40, and the cross section of the upper mold 40 is a square, which is simple in structure and easy to manufacture.
It is understood that, as shown in fig. 3, 4, and 7 to 10, in some embodiments of the present invention, the vertical distance from the upper end surface of the protrusion 123 to the bottom surface of the second concave die 61 is smaller than the axial length of the cell, so as to avoid powder clogging in the cell and facilitate the die separation of the upper die 40 and the lower die 30. In a specific embodiment, the vertical distance from the upper end surface of the first boss to the bottom surface of the second concave die 61 is one tenth to one fifth of the axial length of the duct. It is understood that in some embodiments of the present invention, the channels have a rectangular configuration, although other shapes and configurations are possible.
As shown in fig. 7 to 9, in some embodiments of the present invention, the bottom of the middle rod 62 is connected to the first base 621, and the middle rod 62 is eccentrically disposed on the first base 621, so that the product 20 can be uniformly stressed during mold clamping, and the processing is convenient, so as to ensure the precision requirement of the product 20.
It should be noted that the second base 43 is disposed at the end of the upper mold 40 facing away from the first concave mold 41, and the third base 633 is disposed at the end of the lower mold 63 facing away from the step shape, so as to facilitate installation.
As shown in fig. 3 to 6, in some embodiments of the present invention, the edge of the die hole 51 is provided with a spout chute 52 which is engaged with the second female die 61. The powder at the relatively high-density part is sprayed out through the material spraying chute 52 in the forming process, so that the density of each part is uniform when the product 20 is formed, the poor warping deformation caused by the density difference is avoided or reduced to the maximum extent, the aim of mass production of the test magnetic core is fulfilled, and the design is simple.
It should be noted that, in some embodiments of the present invention, the step height of the molding die is calculated based on the compression ratio of the powder.
An apparatus according to an embodiment of the second aspect of the present invention includes a molding die for testing the magnetic core according to the above-described embodiment of the first aspect of the present invention.
According to the equipment provided by the embodiment of the invention, the forming die provided with the test magnetic core and the forming die provided with the test magnetic core are used for preliminarily obtaining the product 20 by placing the forming material in the die cavity and sintering, the connecting part 21 is formed at the U-shaped opening of the product 20, so that residual stress generated in the forming process of the product 20 is avoided, and the bending deformation of the U-shaped opening caused by the cooling and other factors of the sintered product 20 can be prevented. After the product 20 is formed, redundant connecting parts 21 are removed by means of grinding and the like to obtain the test magnetic core as shown in fig. 1, so that the quality of the product 20 is improved, and the production cost is reduced.
According to the forming process of the embodiment of the third aspect of the invention, the device of the embodiment of the second aspect of the invention comprises the following steps: molding by placing a molding material in a mold cavity and sintering to preliminarily obtain a product 20; trimming, removing excess scrap of the product 20 obtained in the step.
The forming process provided by the embodiment of the invention at least has the following beneficial effects: through placing the molding material in the die cavity and sintering in order to obtain product 20 preliminarily, this product 20's U type opening part is formed with connecting portion 21, avoids product 20 to produce residual stress when the shaping, and can prevent that sintering back product 20 from receiving factors such as cold and leading to its U type opening part to take place bending deformation. After the product 20 is formed, redundant connecting parts 21 are removed by means of grinding and the like to obtain the test magnetic core as shown in fig. 1, so that the quality of the product 20 is improved, and the production cost is reduced.
It will be appreciated that, using the above-described molding process, the product 20 shown in fig. 2 is first produced, and then the connecting portion 21 of the product 20 is ground by grinding means to obtain the test magnetic core shown in fig. 1.
The polishing means was polishing with a polishing device while water was being applied, and the test core shown in fig. 1 was obtained by at least three times of polishing.
The invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.
Claims (10)
1. Test forming die of magnetic core, its characterized in that includes:
the die comprises a die body (10) provided with a die cavity, wherein a forming area for manufacturing a product (20) is arranged in the die cavity, a space (30) is formed between the forming area and one side wall of the die cavity, and the product (20) can form a connecting part (21) at a U-shaped opening through the space (30) during forming.
2. The mold for testing magnetic cores of claim 1, wherein the mold cavity has a rectangular configuration, the forming zone comprising a first forming surface (11) and a second forming surface (12), the first forming surface (11) being lower than the second forming surface (12), the second forming surface (12) being divided in turn into a first zone (121) and two second zones (122), the two second zones (122) being arranged symmetrically with respect to the first zone (121), and the upper surface of the second region (122) is lower than the upper surface of the first region (121), the front end of the first region (121) extending to the first molding surface (11), and the middle part of the first area (121) is provided with a convex part (123) connected with two side surfaces of the die cavity, the spacing (30) is between a rear end of the boss (123) and a rear sidewall of the mold cavity.
3. The forming die for testing a magnetic core according to claim 2, wherein the die body (10) comprises:
the die comprises an upper die (40), wherein a first concave die (41) is arranged on one end face of the upper die (40), a concave part (42) is arranged in the middle of the first concave die (41), and a first distance (31) is formed from the rear end part of the concave part (42) to the outer side face of the upper die (40);
the mould comprises a female mould (50), wherein a mould hole (51) is formed in the female mould (50);
the lower die assembly (60) is structurally inserted into the die hole (51), a second female die (61) is formed by the lower die assembly (60) and the die hole (51) in a matched mode, the first female die (41) and the second female die (61) enclose the die cavity, the protruding portion (123) is arranged on the lower die assembly (60), a second interval is formed between the rear end portion of the protruding portion (123) and the second female die (61), and the first interval (31) and the second interval (32) are matched to form the interval (30).
4. The mold for molding a test core according to claim 3, wherein the lower mold member (60) comprises:
the middle rod (62), the said lobe (123) locates in the middle part of the said middle rod (62) and can insert and locate in the said dent (42), the said lobe (123) includes the first boss that the top surface of the said middle rod (62) extends along axial direction and the second boss that the side of the said middle rod (62) extends along radial direction;
lower type (63), be provided with on lower type (63) with well stick (62) looks adaptation and skew cartridge passageway (631) at middle part, cartridge passageway (631) are the rectangle structure, the lateral wall of relative both sides is the echelonment in the tip on cartridge passageway (631), correspond on another lateral wall of cartridge passageway (631) the second boss is provided with recess (632), second interval (32) are located on cartridge passageway (631) with a relative lateral wall of recess (632) extremely between the lateral surface of lower type (63), well stick (62) are inserted and are located cartridge passageway (631), just down type (63) the top surface is less than the top surface of well stick (62).
5. The mold for molding a test core according to claim 3 or 4, wherein the recess (42) is a hole penetrating the upper mold (40), and the cross section of the upper mold (40) is a Chinese character 'hui' shape.
6. The forming die for testing the magnetic core according to claim 5, wherein the vertical distance value from the upper end face of the convex part (123) to the bottom face of the second concave die (61) is smaller than the axial length value of the pore channel.
7. The mold for testing magnetic cores according to claim 4, wherein a first base (621) is connected to the bottom of the middle rod (62), and the middle rod (62) is eccentrically disposed on the first base (621).
8. The mold for testing magnetic cores according to claim 3, wherein the edge of the die hole (51) is provided with a spout chute (52) that cooperates with the second female die (61).
9. Apparatus comprising a mould for testing a magnetic core according to any of claims 1 to 8.
10. A molding process, characterized in that the apparatus of claim 9 is used, comprising the steps of:
shaping, by placing a shaped material in the cavity and sintering to obtain a product (20) preliminarily;
trimming, removing excess scrap of the product (20) obtained in the step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010727864.9A CN111822701A (en) | 2020-07-23 | 2020-07-23 | Forming die, equipment and forming process for testing magnetic core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010727864.9A CN111822701A (en) | 2020-07-23 | 2020-07-23 | Forming die, equipment and forming process for testing magnetic core |
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| Publication Number | Publication Date |
|---|---|
| CN111822701A true CN111822701A (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010727864.9A Pending CN111822701A (en) | 2020-07-23 | 2020-07-23 | Forming die, equipment and forming process for testing magnetic core |
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| CN208263072U (en) * | 2018-03-21 | 2018-12-21 | 江西尚朋电子科技有限公司 | A kind of soft magnetic ferrite magnetic core forming mould |
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2020
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