CN211112225U - Combined magnetic core magnetic field generating device for improving magnetic gathering capacity - Google Patents
Combined magnetic core magnetic field generating device for improving magnetic gathering capacity Download PDFInfo
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- CN211112225U CN211112225U CN201922135339.3U CN201922135339U CN211112225U CN 211112225 U CN211112225 U CN 211112225U CN 201922135339 U CN201922135339 U CN 201922135339U CN 211112225 U CN211112225 U CN 211112225U
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Abstract
The magnetic field generating device of the combined magnetic core for improving the magnetic gathering capacity comprises a closed annular magnetic core, wherein an excitation coil is wound on the magnetic core and connected with a power supply, the opposite sides of the magnetic core are respectively provided with a working magnetic pole, the end parts of the two working magnetic poles are opposite, and a working magnetic field is formed by the gap of the working magnetic poles; a work magnetic field for placing the work piece on the workbench; the lower side of the working magnetic pole is provided with a plurality of triangular positioning grooves parallel to the longitudinal axis of the working magnetic pole and is also provided with a plurality of lamellar magnetic pole laminations, the magnetic pole laminations are provided with end parts which can be inserted into the triangular positioning grooves, the magnetic pole laminations are matched with the working magnetic pole after being guided by the positioning grooves and are fixed by a fixing part, and the magnetic poles are positioned above a workpiece and are mutually separated. The utility model discloses a different magnetic materials's of collocation magnetic pole lamination and the combination form of the magnetic pole lamination of different quantity can effectively change the field intensity distribution in the magnetic field that the work piece is located, improves the magnetic field intensity in magnetic pole clearance.
Description
Technical Field
The utility model relates to a magnetic field generating device for laser cladding processing.
Background
In the laser processing process, the control of a molten pool is realized by controlling the magnitude and the direction of the Lorentz force through a coupling electromagnetic field, the defects of air holes, cracks and the like in a solidification structure are reduced, and the structure crystal grains are refined, so that the mechanical property of the additive manufacturing part is improved.
The Chinese patent with the patent application number of 201210225593.2 filed by Liuhong xi, et al, university of Kunming theory discloses a method and a device for refining a solidification structure of a laser cladding layer by an alternating magnetic field.
Chinese patent with patent application number 201310755161.5, filed by Yaojianhua et al, Zhejiang industrial university, discloses a static magnetic field-laser coaxial composite cladding method and device, wherein a magnetic field generating device is integrated on a laser head to realize synchronous movement of a magnetic field, so that the phenomena of flow and splashing of a molten pool are inhibited, and the solidification structure of a cladding layer is regulated and controlled.
Chinese patent application No. 201610081496.9, filed by sun-gui-arene et al, of southeast university, discloses an electromagnetic field-assisted laser additive manufacturing device which can effectively reduce pores and microcracks generated inside parts during manufacturing, and at the same time, can refine crystal grains to obtain parts with excellent performance.
However, the magnetic field assisted laser manufacturing apparatus disclosed in the above patent all adopts a single magnetic core structure, and only the magnetic field intensity can be changed by controlling the current in the excitation coil, and the magnetic field intensity distribution of the magnetic field where the workpiece is located cannot be changed by changing the material of the magnetic core structure.
Disclosure of Invention
For overcoming the not enough of existence among the background art, the utility model provides an improve combination magnetic core magnetic field generating device who gathers magnetic capacity solves laser cladding in-process magnetic field intensity low, the inhomogeneous scheduling problem of field intensity distribution.
The utility model discloses a following technical scheme realizes: a magnetic field generator with combined magnetic core for increasing the magnetic gathering power features that the exciting coil wound on magnetic core is energized to generate a magnetic field, and a certain magnetic field intensity is generated in the gap between magnetic poles under the action of magnetic conduction of magnetic core. By changing the material and the number of the magnetic pole laminations matched with the working magnetic poles, the field intensity distribution of a magnetic field where the workpiece is located is effectively changed, so that the magnetic concentration effect of the magnetic core is more obvious.
The utility model provides an above-mentioned combination magnetic core magnetic field generating device who improves and gather magnetic ability, including power, excitation coil, magnetic core, work magnetic pole, workstation and mounting, the magnetic core is closed cyclic annularly, is wound with excitation coil on the magnetic core, and excitation coil connects the power, and the opposite side of magnetic core is equipped with a work magnetic pole respectively, and the tip of two work magnetic poles is relative, and the clearance of two work magnetic poles forms work magnetic field;
the magnetic core is connected with the magnetic poles and the fixing piece;
the lower side of the working magnetic pole is provided with a plurality of triangular positioning grooves parallel to the longitudinal axis of the working magnetic pole and is also provided with a plurality of lamellar magnetic pole laminations, the magnetic pole laminations are provided with end parts which can be inserted into the triangular positioning grooves, the magnetic pole laminations are matched with the working magnetic pole after being guided by the positioning grooves and are fixed by a fixing part, and the magnetic poles are positioned above a workpiece and are separated from each other.
Further, the power supply may be an alternating current power supply or a direct current power supply, i.e., the magnetic field may be an alternating magnetic field or a steady magnetic field.
Furthermore, the excitation coil is a coil wound by an enameled wire or a copper pipe, and each turn of the coil of the excitation coil is electrically insulated.
Furthermore, the magnetic core and the working magnetic pole can be made of ferrite or silicon steel sheets with higher conductivity, and the magnetic core and the working magnetic pole can be of an integrated structure made of the same material or of a separated structure made of different materials.
Further, the magnetic pole lamination material is a silicon steel sheet, ferrite, permalloy or an alloy strip.
Furthermore, the field intensity distribution of the magnetic field where the workpiece is located can be changed by changing the material and the number of the magnetic pole laminations, and the magnetic field intensity at the magnetic pole gap is enhanced.
The beneficial effects of the utility model are that:
the utility model discloses a combination formula magnetic pole structure, the magnetic pole lamination through the different magnetic materials of arranging and the combination form of the magnetic pole lamination of different quantity, can effectively change the field intensity distribution in the magnetic field that the work piece was located, improve the magnetic field intensity in magnetic pole clearance.
The device of the utility model is simple in structure and convenient to process. The positioning groove is formed in the lower side of the working magnetic pole, and the relative position between the magnetic pole lamination and the working magnetic pole can be determined through the positioning groove in actual assembly, so that the assembly accuracy can be improved.
The utility model is suitable for a polytype magnetic field generating device, like alternating magnetic field generating device, steady state magnetic field generating device etc..
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a plan view of the present invention.
Fig. 3a is a schematic view of the structure of the magnetic pole head.
Fig. 3b is a cross-sectional view taken along line a-a of fig. 3 a.
Detailed Description
The following describes in detail an embodiment of the present invention with reference to the drawings.
A combined magnetic core magnetic field generating device for improving the magnetic gathering capacity comprises a power supply 1, an excitation coil 2, a magnetic core 3, a working magnetic pole 4, a magnetic pole lamination 5, a fixing piece 6, a working table 7 and a workpiece 8. The magnetic core 3 is in a closed ring shape, the magnetic core 3 is wound with the excitation coil 2, the excitation coil 2 is connected with the power supply 1, the opposite sides of the magnetic core 3 are respectively provided with a working magnetic pole 4, the end parts of two working magnetic poles (4.1,4.2) are opposite, and the gap between the two working magnetic poles (4.1,4.2) forms a working magnetic field;
The lower side of the working magnetic pole 4 is provided with a plurality of triangular positioning grooves parallel to the longitudinal axis of the working magnetic pole, and is also provided with a plurality of thin-sheet magnetic pole laminations 5, the magnetic pole laminations 5 are provided with end parts capable of being inserted into the triangular positioning grooves, the magnetic pole laminations 5 are accurately matched with the working magnetic pole 4 after being guided by the triangular positioning grooves and are fixed by a fixing part 6, silicon steel sheets, ferrite, permalloy or alloy strips can be selected as materials of the magnetic pole laminations 5, and the field intensity distribution of a magnetic field where a workpiece is located can also be effectively changed by matching the magnetic pole laminations 5 with the working magnetic pole 4 through different quantities.
The iron core is square, and can also be round, oval and other shapes.
The embodiments described in this specification are merely illustrative of implementations of the inventive concept and the scope of the invention should not be considered limited to the specific forms set forth in the embodiments but rather the scope of the invention is intended to cover all technical equivalents that may occur to those skilled in the art based on the inventive concept.
Claims (5)
1. The magnetic field generating device comprises a power supply, an excitation coil, a magnetic core, working magnetic poles, a workbench and a fixing piece, wherein the magnetic core is in a closed ring shape, the excitation coil is wound on the magnetic core and connected with the power supply, the two working magnetic poles are respectively arranged on the opposite sides of the magnetic core, the end parts of the two working magnetic poles are opposite, and a working magnetic field is formed by the gap between the two working magnetic poles;
a workpiece is placed on a working magnetic field on the workbench, a mortise is arranged on the workbench, the fixing piece is fixed on the workbench through joggle connection, and the magnetic core is connected with the magnetic pole and the fixing piece; the method is characterized in that:
the lower side of the working magnetic pole is provided with a plurality of triangular positioning grooves parallel to the longitudinal axis of the working magnetic pole and is also provided with a plurality of lamellar magnetic pole laminations, the magnetic pole laminations are provided with end parts which can be inserted into the triangular positioning grooves, the magnetic pole laminations are matched with the working magnetic pole after being guided by the positioning grooves and are fixed by a fixing part, and the magnetic poles are positioned above a workpiece and are separated from each other.
2. The combined core magnetic field generator for improving magnetic flux concentration of claim 1, wherein: the power supply is an alternating current power supply or a direct current power supply, and the magnetic field is an alternating magnetic field or a steady magnetic field.
3. The combined core magnetic field generator for improving magnetic flux concentration of claim 1, wherein: the excitation coil is a coil wound by an enameled wire or a copper pipe, and each turn of the coil of the excitation coil is electrically insulated.
4. The combined core magnetic field generator for improving magnetic flux concentration of claim 1, wherein: the magnetic core and the working magnetic pole are made of ferrite or silicon steel sheets with higher conductivity, and the magnetic core and the working magnetic pole are of an integrated structure made of the same material or of a separated structure made of different materials.
5. The combined core magnetic field generator for improving magnetic flux concentration of claim 1, wherein: the magnetic pole lamination material is a silicon steel sheet, ferrite, permalloy or alloy strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201922135339.3U CN211112225U (en) | 2019-12-03 | 2019-12-03 | Combined magnetic core magnetic field generating device for improving magnetic gathering capacity |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922135339.3U CN211112225U (en) | 2019-12-03 | 2019-12-03 | Combined magnetic core magnetic field generating device for improving magnetic gathering capacity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110724952A (en) * | 2019-12-03 | 2020-01-24 | 浙江工业大学 | Combined magnetic core magnetic field generating device for improving magnetic gathering capacity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110724952A (en) * | 2019-12-03 | 2020-01-24 | 浙江工业大学 | Combined magnetic core magnetic field generating device for improving magnetic gathering capacity |
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