CN114211593A - Method for improving collapse force of permanent magnetic ferrite magnetic shoe - Google Patents
Method for improving collapse force of permanent magnetic ferrite magnetic shoe Download PDFInfo
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- CN114211593A CN114211593A CN202111639862.5A CN202111639862A CN114211593A CN 114211593 A CN114211593 A CN 114211593A CN 202111639862 A CN202111639862 A CN 202111639862A CN 114211593 A CN114211593 A CN 114211593A
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 229910000859 α-Fe Inorganic materials 0.000 title claims abstract description 27
- 238000003825 pressing Methods 0.000 claims description 14
- 230000002950 deficient Effects 0.000 abstract description 3
- 230000035882 stress Effects 0.000 description 19
- 230000008569 process Effects 0.000 description 6
- 230000007547 defect Effects 0.000 description 5
- 230000006355 external stress Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 241001424392 Lucia limbaria Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
- B28B3/021—Ram heads of special form
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
- B24B19/22—Single-purpose machines or devices for particular grinding operations not covered by any other main group characterised by a special design with respect to properties of the material of non-metallic articles to be ground
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
- B24B19/26—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding workpieces with arcuate surfaces, e.g. parts of car bodies, bumpers or magnetic recording heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/08—Apparatus or processes for treating or working the shaped or preshaped articles for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
- B28B3/04—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form with one ram per mould
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
- H01F41/0266—Moulding; Pressing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses a method for improving the crushing force of a permanent magnetic ferrite magnetic shoe. The method comprises the following steps: and forming a plurality of textures which are not parallel to the axial height direction on the arc inner side surface of the magnetic shoe. The method achieves that the crushing force is integrally improved to 1900N, the defective proportion is reduced to 5%, the actual requirement of a customer on the crushing force of a product is far more than or equal to 1200N, and meanwhile, the similar problems of similar magnetic tiles are solved.
Description
Technical Field
The invention belongs to the technical field of ferrite production, and particularly relates to a method for improving the crushing force of a permanent magnetic ferrite magnetic shoe.
Background
The permanent magnetic ferrite is a magnetic component which takes ferric oxide as a main raw material and is widely used in automobiles, household appliances and electric tools. In recent years, the demand for permanent magnetic ferrite components has increased greatly as the electric motor for household appliances is changed from ac to dc. At present, the magnetic shoe is mainly used in a permanent magnet direct current motor, and is different from an electromagnetic motor which generates a magnetic potential source through a magnet exciting coil, the permanent magnet motor generates a constant magnetic potential source by using a permanent magnet material, and the permanent magnet magnetic shoe has many advantages of replacing electric excitation, so that the motor has the advantages of simple structure, convenience in maintenance, light weight, small volume, reliability in use, small copper consumption, low energy consumption and the like.
At present, after the permanent magnetic ferrite magnetic shoe is pressed, formed and sintered, the grinding process is carried out, and the grinding process of the magnetic shoe comprises the following steps: 1) grinding two end faces of the axial length by using a double-end-face grinding machine; 2) grinding the chord width and the bottom plane of the magnetic shoe by using a single-station grinding machine; 3) grinding inner and outer circular arc chamfers on two end faces of the shaft length by using a four-station automatic chamfer grinding machine; 4) roughly grinding the inner and outer arcs of the magnetic shoe by using a double-station through type tile-shaped magnet grinding machine; 5) accurately grinding the inner arc of the magnetic shoe by using a single-station through type shoe-shaped magnet grinding machine; 6) accurately grinding the outer arc of the magnetic shoe by using a single-station through type shoe-shaped magnet grinding machine; 7) and 4R angle is inverted for the finished magnetic shoe.
The step 5) is a more critical step for finely grinding the inner arc of the magnetic shoe. For this purpose, for example, chinese patent CN 202022566411 discloses a fixture for grinding an inner arc of a magnetic shoe, which includes a fixing base, wherein a lead screw is rotatably installed inside the fixing base, a clamping seat is slidably installed on the lead screw at the bottom of the fixing base, an arc-shaped groove is formed on the clamping seat, a clamping plate is connected and installed at the top of the clamping seat, a fixing bolt is rotatably installed on the clamping seat, the clamping seat and the clamping plate are rotatably installed and fixed by the fixing bolt, and a fixing groove is formed on the surface of the fixing base; two fixed slots are formed in the fixed base, the two fixed slots can be fixed in different directions, and when the device is used for fixing the magnetic shoe to process, the fixed base can be installed according to the processing requirement of the magnetic shoe. Further, chinese patent CN202022958317X discloses a polishing and grinding tool for arc inner side surfaces of permanent magnetic ferrite tiles, which comprises a base, wherein a baffle penetrates through the top of each of the left and right walls of the base, a concave platform is formed on the inner side of the lower surface of the baffle, an anti-slip pad is bonded on the concave platform of the baffle through glue, a u-shaped plate is fixedly arranged on the outer side of the base close to the baffle, and a screw hole is formed in the middle of the outer wall of the u-shaped plate. The ferrite magnetic shoe arc inner side surface polishing and grinding tool disclosed in the chinese patent CN2020111131064 comprises a supporting structure, wherein the supporting structure comprises a U-shaped tool rack, a fixing block, a through hole, a driving motor, an adjusting rod, a rubber sleeve, a buffer spring and a turntable, and the fixing block is arranged at the upper end of the U-shaped tool rack.
Through the polished permanent magnetic ferrite magnetic shoe, the surface of the grinding wheel is tangent to the grinding surface of the magnetic shoe, and the running tangent line of the carborundum particles and the running direction of the magnetic shoe are on the same straight line at the tangent point. On one hand, macroscopically, the surface of the magnetic shoe is ground to form fine textures highly parallel to the axis of the magnetic shoe, as shown in fig. 1, microscopically, the textures are ridges and ravines which are alternately fluctuated, and in the ravines, carborundum inevitably causes certain micro defects on the surface of the magnetic shoe; on the other hand, the lowest point of the gullies corresponds to aThe individual internal corners, like the macroscopic internal corners, are subject to tensile stress concentrations. As shown in fig. 2 and 3, in the crushing force test and assembly process, according to the external force PPress and pressIn the direction, the outer arc surface of the magnetic shoe generates compressive stress which does not affect the crushing force, but the inner arc surface of the magnetic shoe generates stronger tensile stress PPulling deviceThe stretching direction is vertical to the magnetic shoe axial height and vertical to the texture caused by grinding, a large amount of tensile stress is concentrated at the internal corner of gully, the locally concentrated tensile stress at the internal corner is completely the same as the tensile stress caused by external force, the intermolecular bonding force is destroyed under the concentration action of the two tensile stresses, the defect is rapidly expanded and grown along the axial height direction, and finally the magnetic shoe is fractured in advance, which shows that the crushing force is lower, even the requirement of a client can not be met.
Disclosure of Invention
1. Problems to be solved
Aiming at the problem that the crushing force is lower due to the fact that fine textures parallel to the magnetic shoe axis height exist on the arc-shaped inner side face of the magnetic shoe, the invention provides a method for improving the crushing force of a permanent magnetic ferrite magnetic shoe, and the crushing force of the permanent magnetic ferrite magnetic shoe is improved.
2. Technical scheme
In order to solve the problems, the technical scheme adopted by the invention is as follows:
the invention discloses a method for improving the crushing force of a permanent magnetic ferrite magnetic shoe, which comprises the following steps:
1) and forming a plurality of textures which are not parallel to the axial height direction on the arc inner side surface of the magnetic shoe.
In a possible embodiment of the present invention, the texture of the arc inner side surface of the magnetic shoe is perpendicular to the axial height direction.
In one possible embodiment of the present invention, the method further includes:
2) the step of making a texturing means capable of being formed on the inner arcuate surface of a magnetic shoe, said texturing means comprising:
a base;
a bearing tray capable of being fixed on the base;
a guide rail mounted on the carrying tray;
the pressing component is provided with a cross beam and a pressing head arranged on the cross beam, the cross beam is fixed with the bearing tray, and the pressing head is arranged right opposite to the guide rail;
and the inner arc polishing component is provided with a circular grinding head matched with the arc inner side surface of the magnetic shoe, the circular grinding head is positioned below the pressure head, the lower end of the circular grinding head is fixed on the base, and the central axis of the circular grinding head is parallel to the guide rail.
In a possible embodiment of the invention, the ram has an inner arc surface, the axis of which is parallel to the guide rail.
In a possible embodiment of the invention, the outer circle of the circular grinding head is consistent with the arc direction of the arc-shaped pressure head.
In a possible embodiment of the present invention, the carrying tray is fixed on the base by four threaded guide posts.
In a possible implementation manner of the invention, the pressing part is further provided with an adjusting bolt, a waist-shaped through hole is formed in the cross beam, and the adjusting bolt penetrates through the waist-shaped through hole and is fixedly connected with the pressure head.
In a possible embodiment of the present invention, the guide rail is provided with an avoiding notch.
In a possible embodiment of the present invention, the radius of the inner arc surface is larger than the radius of the outer arc surface of the magnetic shoe.
In one possible embodiment of the invention, the circular grinding head is driven by an internal motor.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
(1) the method for improving the crushing force of the permanent magnetic ferrite magnetic shoe achieves the aim of integrally improving the crushing force to 1900N and reducing the defective proportion to 5 percent, and far exceeds the actual requirement that a customer requires the crushing force of a product to be more than or equal to 1200N, and simultaneously solves the similar problems of the similar magnetic shoes.
(2) The grinding texture is vertical to the high direction of the magnetic shoe shaft, when a crushing force test or an assembly process is carried out, the direction of the inner arc tensile stress caused by the external stress is unchanged and still vertical to the high direction of the magnetic shoe shaft, but the tensile stress concentrated by the internal corner of a gully is vertical to the tensile stress caused by the external stress due to the change of the texture direction, and larger intermolecular binding force damage can not be caused by overlapping; on the other hand, the directions of the ravines and the ridges are perpendicular to the direction of the tensile stress caused by the external force, the existing defects are in the same direction with the tensile stress caused by the external force at a high probability and cannot be enlarged, and the defects cannot continuously penetrate through the ravines and the ridges and cannot grow continuously, so that the advance breakage of the magnetic tiles is prevented.
Drawings
FIG. 1 is a schematic view of a prior art magnetic tile product texture;
FIG. 2 is a schematic diagram of a conventional magnetic shoe under stress;
FIG. 3 is a schematic view of the stress and texture of a conventional magnetic shoe product;
FIG. 4 is a schematic view of the texture of the magnetic tile product of the present invention;
FIG. 5 is another schematic view of the texture of the magnetic tile product of the present invention;
FIG. 6 is a schematic perspective view of a texture device of the present invention;
FIG. 7 is a front view of a texture feature of the present invention;
fig. 8 is a bottom view of fig. 7.
Description of reference numerals:
100. a magnetic shoe;
200. a texture device; 210. a base; 211. a threaded guide post; 220. a carrying tray; 230. a guide rail; 231. avoiding the notch; 240. a pressing member; 241. a cross beam; 242. a pressure head; 2421. an inner arc surface; 243. adjusting the bolt; 250. an inner arc grinding component; 251. a circular grinding head.
Detailed Description
Exemplary embodiments of the present invention are described in detail below. Although these exemplary embodiments are described in sufficient detail to enable those skilled in the art to practice the invention, it should be understood that other embodiments may be realized and that various changes to the invention may be made without departing from the spirit and scope of the present invention. The following more detailed description of the embodiments of the invention is not intended to limit the scope of the invention, as claimed, but is presented for purposes of illustration only and not limitation to describe the features and characteristics of the invention, to set forth the best mode of carrying out the invention, and to sufficiently enable one skilled in the art to practice the invention. Accordingly, the scope of the invention is to be limited only by the following claims.
The method for improving the crushing force of the permanent magnetic ferrite magnetic shoe 100 of the embodiment comprises the following steps: 1) forming a plurality of textures which are not parallel to the axial height direction on the arc inner side surface of the magnetic shoe 100; 2) a step of forming a texturing device 200 capable of forming a texture on the arc-shaped inner side surface of the magnetic shoe 100.
It should be noted that: the grinding texture of the magnetic shoe 100 is perpendicular to the axial height direction, when a crushing force test or an assembly process is carried out, the direction of the inner arc tensile stress caused by the external stress is unchanged and still perpendicular to the axial height direction of the magnetic shoe 100, but due to the change of the texture direction, the tensile stress concentrated by the internal corner of a gully is mutually perpendicular to the tensile stress caused by the external force, and larger intermolecular binding force damage can not be caused by overlapping; on the other hand, the directions of the ravines and the ridges are perpendicular to the direction of the tensile stress caused by the external force, and the existing defects are in the same direction with the tensile stress caused by the external force at a high probability and cannot be enlarged, and further cannot continuously pass through the ravines and the ridges and cannot grow continuously, so that the advance fracture of the magnetic tile 100 is prevented.
The method for improving the crushing force of the permanent magnetic ferrite magnetic shoe 100 achieves the aim of integrally increasing the crushing force to 1900N and reducing the defective proportion to 5%, and far exceeds the actual requirement that a customer requires the crushing force of a product to be more than or equal to 1200N, and simultaneously solves the similar problems of the similar magnetic shoes 100.
As shown in fig. 4 and 5, the inner arc-shaped surface of the magnetic shoe 100 is formed with a plurality of textures which are not parallel to the axial height direction, and may be mixed inclined or inclined in one direction, and the grinding is performed by using a vibrating grinding head, and considering that the above-mentioned textures are troublesome in design and particularly have high requirements for equipment, it is preferable that the textures of the inner arc-shaped surface of the magnetic shoe 100 are perpendicular to the axial height direction. On the basis, the embodiment designs the texture forming device 200 on the arc inner side surface of the magnetic shoe 100.
As shown in fig. 6 to 8, the texturing device 200 for forming the curved inner side surface of the magnetic shoe 100 of the present embodiment includes: base 210, carrying tray 220, guide rail 230, hold-down part 240 and inner arc grinding part 250.
Wherein: the base 210 is made of cast iron and has good wear resistance; the base 210 is further provided with a positioning through hole, the whole texture device 200 can be fixed on a magnetic tile 100 production line, for example, between two conveyor belts, and the conveyor belts can continuously push the magnetic tile 100 into the texture device 200, thereby realizing continuous production.
In this embodiment, the bearing tray 220 is fixed on the base 210 through four threaded guide posts 211, threaded holes are formed at four corners of the specific bearing tray 220, the four threaded guide posts 211 are matched with the threaded holes, and the position height of the bearing tray 220 is adjusted through nuts on the threaded posts, so that the requirements of the magnetic tiles 100 with different heights are met.
Just as the whole texturing device 200 is connected to the magnetic tile 100 production line as described above, the magnetic tiles 100 conveyed by the conveyor belt need to smoothly enter the texturing device 200, and therefore, the carrying tray 220 is provided with the guide rail 230, and the width of the guide rail 230 is slightly larger than the chord length of the magnetic tiles 100, so that the magnetic tiles 100 can be polished.
In this embodiment, the pressing component 240 has a beam 241 and a pressing head 242 disposed on the beam 241, the beam 241 is fixed to the carrying tray 220, and the pressing head 242 is disposed opposite to the guide rail 230; the lower end surface of the pressure head 242 may be a plane or a circular arc surface, and preferably, the pressure head 242 has an inner circular arc surface 2421, and the radius of the inner circular arc surface 2421 is greater than the radius of the outer circular arc surface of the magnetic shoe 100; the inner cambered surface 2421 has an axis parallel to the guide rail 230.
Further, the pressing member 240 further has an adjusting bolt 243, the cross beam 241 is provided with a kidney-shaped through hole, and the adjusting bolt 243 penetrates through the kidney-shaped through hole to be fixedly connected with the pressing head 242. Therefore, the guide rail 230 is provided with an avoiding notch 231, and when the pressure head 242 is adjusted up and down, the lower end of the pressure head 242 with the inner arc surface 2421 extends into the avoiding notch 231, so that the possibility is provided for adjusting the pressure head 242.
As shown in fig. 7, the inner arc grinding member 250 has a circular grinding head 251 matched with the arc inner side surface of the magnetic shoe 100, the outer circle of the circular grinding head 251 is in accordance with the arc direction of the arc-shaped pressure head 242, the circular grinding head 251 is positioned below the pressure head 242 and is fixed on the base 210 at the lower end, and the central axis of the circular grinding head 251 is parallel to the guide rail 230.
The circular grinding heads 251 are driven by a built-in motor in consideration of compactness of the structure and power required for grinding. In addition, the base 210 may be provided with a through hole, and the circular grinding head 251 may be driven by transmission in the form of a belt, a gear, or the like.
It should be noted that the above embodiments are intended to demonstrate the practical application of the preparation method provided by the present invention, and are not intended to limit the scope of the present invention. Various modifications, substitutions, or improvements may occur to those skilled in the art that fall within the spirit and scope of the present invention. The scope of the invention is to be determined by the claims appended hereto.
Claims (10)
1. A method of improving the crushing force of a permanent ferrite magnetic shoe (100), comprising:
1) forming a plurality of textures which are not parallel to the axial height direction on the arc inner side surface of the magnetic shoe (100).
2. The method for improving the crushing force of the permanent magnetic ferrite magnetic shoe (100) according to claim 1, wherein the texture of the arc-shaped inner side surface of the magnetic shoe (100) is perpendicular to the axial height direction.
3. The method for improving the collapse of a permanent ferrite magnetic shoe (100) of claim 2 further comprising:
2) a step of fabricating a texturing device (200) capable of being formed on an arc-shaped inner side surface of a magnetic shoe (100), the texturing device (200) formed on the arc-shaped inner side surface of the magnetic shoe (100) comprising:
a base (210);
a carrying tray (220) capable of being fixed on the base (210);
a guide rail (230) mounted on the carrying tray (220);
the pressing part (240) is provided with a cross beam (241) and a pressing head (242) arranged on the cross beam (241), the cross beam (241) is fixed with the bearing tray (220), and the pressing head (242) is arranged opposite to the guide rail (230);
and the inner arc grinding component (250) is provided with a circular grinding head (251) matched with the arc inner side surface of the magnetic shoe (100), the circular grinding head (251) is positioned below the pressure head (242), the lower end of the circular grinding head (251) is fixed on the base (210), and the central axis of the circular grinding head (251) is parallel to the guide rail (230).
4. The method for improving the crushing force of the permanent ferrite magnetic shoe (100) according to claim 3, wherein the pressure head (242) is provided with an inner arc surface (2421), and the axis of the inner arc surface (2421) is parallel to the guide rail (230).
5. The method for improving the crushing force of the permanent magnetic ferrite magnetic shoe (100) according to claim 4, wherein the outer circle of the circular grinding head (251) is consistent with the arc direction of the arc-shaped pressure head (242).
6. The method for improving the crushing force of a permanent magnetic ferrite magnetic shoe (100) according to claim 5, wherein the carrying tray (220) is fixed on the base (210) by four threaded guide posts (211).
7. The method for improving the crushing force of the permanent magnetic ferrite magnetic shoe (100) according to claim 3, wherein the pressing part (240) is further provided with an adjusting bolt (243), the cross beam (241) is provided with a kidney-shaped through hole, and the adjusting bolt (243) penetrates through the kidney-shaped through hole to be fixedly connected with the pressure head (242).
8. The method for improving the crushing force of the permanent magnetic ferrite magnetic shoe (100) according to claim 3, wherein the guide rail (230) is provided with an avoiding notch (231).
9. The method for improving the crushing force of the permanent ferrite magnetic shoe (100) according to claim 4, wherein the radius of the inner arc surface (2421) is larger than the radius of the outer arc surface of the magnetic shoe (100).
10. The method for improving the crushing force of a permanent magnetic ferrite magnetic shoe (100) according to claim 3, wherein the circular grinding head (251) is driven by an internal motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111639862.5A CN114211593A (en) | 2021-12-29 | 2021-12-29 | Method for improving collapse force of permanent magnetic ferrite magnetic shoe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111639862.5A CN114211593A (en) | 2021-12-29 | 2021-12-29 | Method for improving collapse force of permanent magnetic ferrite magnetic shoe |
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| CN114211593A true CN114211593A (en) | 2022-03-22 |
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| CN202111639862.5A Pending CN114211593A (en) | 2021-12-29 | 2021-12-29 | Method for improving collapse force of permanent magnetic ferrite magnetic shoe |
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