CN111342580B - Rotor shell of permanent magnet type magnetic screw rod - Google Patents
Rotor shell of permanent magnet type magnetic screw rod Download PDFInfo
- Publication number
- CN111342580B CN111342580B CN202010099898.8A CN202010099898A CN111342580B CN 111342580 B CN111342580 B CN 111342580B CN 202010099898 A CN202010099898 A CN 202010099898A CN 111342580 B CN111342580 B CN 111342580B
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- Prior art keywords
- permanent magnet
- spiral
- type magnetic
- double
- rotor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/278—Surface mounted magnets; Inset magnets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention provides a rotor shell of a permanent magnet type magnetic screw rod, which is formed by splicing two semi-cylindrical monomers into a cylinder, wherein spiral bosses are arranged at two ends of the inner side of each semi-cylindrical monomer, the spiral inclination angle of each spiral boss is the same as the spiral inclination angle of a permanent magnet, a groove for adhering and embedding the permanent magnet is arranged between the spiral bosses, and the height of each boss is more than or equal to the thickness of the permanent magnet. According to the rotor shell of the permanent magnet type magnetic screw rod, the spiral boss is arranged on the inner side of the end part of the shell, so that the difficulty in adhering the permanent magnet is simplified, the adhering speed of the permanent magnet is increased, and higher stability of the permanent magnet is provided.
Description
Technical Field
The invention relates to the technical field of mechanical transmission, in particular to a rotor shell of a permanent magnet type magnetic screw rod.
Background
Traditionally, interconversion of linear motion and rotary motion can be achieved with the aid of a mechanical screw, and the transmission of force between the screw and the nut of the mechanical screw is mostly carried out through balls, and mechanical friction exists in the transmission, and when the mechanical screw suddenly bears large force, the damage of the screw structure is easily caused. The magnetic lead screw serving as a non-direct contact rotary/linear motion conversion device has the advantages of small friction, no abrasion, small noise, anti-locking property and the like. However, at present, the magnetic screw rod is difficult to machine and manufacture, and especially the installation and fixation of the spiral permanent magnet are difficult. Most permanent magnets of the magnetic screw rotor are arranged in a cylinder, but the method has the defects of time and labor waste in assembly, unfirm fixation of the permanent magnets and the like.
Disclosure of Invention
The invention aims to provide a rotor shell of a permanent magnet type magnetic screw rod, which solves the problem that a rotor permanent magnet is difficult to assemble.
In order to solve the technical problem, the technical scheme of the invention is as follows: the rotor shell of the permanent magnet type magnetic screw is formed by splicing two semi-cylindrical monomers into a cylinder, wherein spiral bosses are arranged at two ends of the inner side of each semi-cylindrical monomer, the spiral inclination angle of each spiral boss is the same as the spiral inclination angle of each permanent magnet, grooves for sticking and embedding the permanent magnets are arranged between the spiral bosses, and the height of each boss is larger than or equal to the thickness of each permanent magnet.
Further, the spiral inclination angle of the permanent magnet is as follows: tan α = τ/4R, where α denotes an angle at which the helix of the helical permanent magnet is inclined, τ denotes a pole pitch of the helical permanent magnet, and R denotes an inner circle radius of the helical permanent magnet.
Further, the permanent magnet is a double-spiral permanent magnet or a single-spiral permanent magnet, the polarity of the inner surface of one spiral permanent magnet of the double-spiral permanent magnet is S pole, the polarity of the inner surface of the other spiral permanent magnet of the double-spiral permanent magnet is N pole, the two are alternately arranged to form an N-S double-spiral permanent magnet, the polarity of the surface of the single-spiral permanent magnet is one of the N pole and the S pole, and the polarity of the surface is continuous.
Further, the double-spiral permanent magnet is arranged in a close fit mode.
Further, the double-helix permanent magnet is provided with an iron yoke between double helices, and the iron yoke is of a double helix structure.
Furthermore, gaps are reserved among turns of the single-spiral permanent magnet, and a spiral iron yoke is placed in the gaps.
Further, the spiral permanent magnet is formed by splicing sectional spiral permanent magnets.
Furthermore, two semi-cylindrical single bodies are fixedly spliced into a cylindrical shape through screws.
According to the rotor shell of the permanent magnet type magnetic screw rod, the spiral boss is arranged on the inner side of the end part of the shell, so that the difficulty of sticking the permanent magnet is simplified, the sticking speed of the permanent magnet is increased, and higher stability of the permanent magnet is provided.
Drawings
The invention is further described with reference to the accompanying drawings:
fig. 1 is a schematic structural diagram of a rotor shell of a permanent magnet type magnetic screw according to an embodiment of the present invention;
FIG. 2a is a schematic isometric side view of a first semi-cylindrical monolithic body according to an embodiment of the present invention;
FIG. 2b is an isometric view of a first semi-cylindrical cell according to an embodiment of the present invention;
FIG. 2c is a schematic isometric rear view of a first semi-cylindrical cell provided in accordance with an embodiment of the present invention;
fig. 3a is a schematic front view of a one-turn spiral permanent magnet divided into eight pieces of permanent magnets without iron yokes according to an embodiment of the present invention;
fig. 3b is a schematic side view of a one-turn spiral permanent magnet divided into eight pieces of permanent magnets without iron yokes according to an embodiment of the present invention;
fig. 4a is a schematic front structural view of a single-turn single-spiral permanent magnet divided into eight pieces of permanent magnets and provided with an iron yoke according to an embodiment of the present invention;
fig. 4b is a schematic side view of a single-turn single-spiral permanent magnet divided into eight small pieces of permanent magnets and provided with an iron yoke according to an embodiment of the present invention.
Detailed Description
The rotor shell of the permanent magnet type magnetic screw provided by the invention is further described in detail by combining the attached drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are each provided with a non-precise ratio for the purpose of facilitating and clearly facilitating the description of the embodiments of the present invention.
The core idea of the invention is that the rotor shell of the permanent magnet type magnetic screw provided by the invention is provided with the spiral boss at the inner side of the end part of the shell, so that the difficulty of permanent magnet pasting is simplified, the speed of permanent magnet pasting is increased, and higher permanent magnet stability is provided.
Fig. 1 is a schematic structural diagram of a rotor shell of a permanent magnet type magnetic screw according to an embodiment of the present invention. Referring to fig. 1, the invention provides a rotor shell of a permanent magnet type magnetic screw, which is formed by splicing two semi-cylindrical monomers into a cylinder, a first semi-cylindrical monomer 11 and a second semi-cylindrical monomer 12, wherein two ends of the inner side of each semi-cylindrical monomer are provided with spiral bosses 13, the spiral inclination angle of each spiral boss is the same as the spiral inclination angle of each permanent magnet, a groove 14 for adhering and embedding the permanent magnet is arranged between the spiral bosses, and the height of each boss 13 is more than or equal to the thickness of the permanent magnet.
FIG. 2a is a schematic isometric side view of a first semi-cylindrical monolithic body according to an embodiment of the present invention; FIG. 2b is an isometric view of a first semi-cylindrical monolithic body according to an embodiment of the present invention; fig. 2c is a schematic isometric rear view of a first semi-cylindrical monolithic body according to an embodiment of the present invention. Referring to fig. 2a to 2c, the first semi-cylindrical single body 11 and the second semi-cylindrical single body 12 are fixedly spliced into a cylindrical shell by screws, and a rotor having an N-S double-spiral permanent magnet or a rotor having only a single-spiral permanent magnet is finally formed after the spiral permanent magnet is adhered in the shell.
In the embodiment of the invention, the spiral inclination angle of the permanent magnet is as follows: tan α = τ/4R, where α represents the angle at which the helix of the helical permanent magnet is tilted, τ represents the pole pitch of the helical permanent magnet, i.e., the axial offset corresponding to one turn of the helix of the permanent magnet, and R represents the inner circle radius of the helical permanent magnet.
Fig. 3a is a schematic front view of a one-turn spiral permanent magnet divided into eight pieces of permanent magnets without iron yokes according to an embodiment of the present invention; fig. 3b is a schematic side view of a one-turn spiral permanent magnet divided into eight pieces of permanent magnets without iron yokes according to an embodiment of the present invention; fig. 4a is a schematic front structural view of a single-turn single-spiral permanent magnet divided into eight pieces of permanent magnets and provided with an iron yoke according to an embodiment of the present invention; fig. 4b is a schematic side view of a single-turn single-spiral permanent magnet divided into eight small pieces of permanent magnets and provided with an iron yoke according to an embodiment of the present invention. Referring to fig. 3a, 3b, 4a and 4b, the permanent magnet is a double-spiral permanent magnet or a single-spiral permanent magnet, the polarity of the inner surface of one spiral of the double-spiral permanent magnet is S-pole, the polarity of the inner surface of the other spiral of the double-spiral permanent magnet is N-pole, the two are alternately arranged to form an N-S double-spiral permanent magnet, the polarity of the surface of the single-spiral permanent magnet is one of N-pole and S-pole, and the polarity of the surface is continuous. The double-helix permanent magnet can be tightly attached, and an iron yoke can also be arranged between the double helices, wherein the iron yoke is in a double helix structure. Gaps are reserved among turns of the single-spiral permanent magnet, a spiral iron yoke is placed in the gaps, and the iron yoke is also spiral to form a magnet-iron yoke double-spiral structure. N and S double-spiral permanent magnets in the double-spiral permanent magnets can be tightly attached, iron yokes can also be arranged between the double-spiral permanent magnets, and the iron yokes are also double-spiral permanent magnets to form a four-spiral structure of magnet-iron yoke-magnet-iron yoke.
The spiral inclination angle of the double-spiral iron yoke is the same as that of the permanent magnet, and the lead of the double spiral of the iron yoke is the same. The spiral iron yoke can be directly manufactured by an integrated processing method, or can be formed by splicing segmented spiral iron yoke blocks, and the iron yoke blocks are connected end to end and tightly attached to form the spiral iron yoke.
The spiral permanent magnet is formed by splicing sectional spiral permanent magnets.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. The utility model provides a rotor shell of permanent magnet formula magnetic force lead screw which characterized in that splices into the cylinder by two semicylindrical monomers, wherein, the inboard both ends of semicylindrical monomer are equipped with the spiral boss, and the angle of its spiral slope is the same with the angle of permanent magnet spiral slope, be equipped with the recess of pasting, inlaying the permanent magnet between the spiral boss, the thickness of the high more than or equal to permanent magnet of boss.
2. A rotor case of a permanent magnet type magnetic force screw rotor according to claim 1, wherein tan α = τ/4R, where α denotes an angle of inclination of a spiral of the spiral permanent magnet, τ denotes a pitch of a pole of the spiral permanent magnet, and R denotes an inner circle radius of the spiral permanent magnet.
3. A rotor case of a permanent magnet type magnetic force screw according to claim 1, wherein the permanent magnets are double-spiral permanent magnets of which one spiral has an S-pole polarity on an inner surface and the other spiral has an N-pole polarity on an inner surface, alternately arranged to form an N-S double-spiral permanent magnet, and the single-spiral permanent magnet has one of an N-pole and an S-pole polarity on a surface, and has a continuous surface polarity.
4. A rotor shell of a permanent magnet type magnetic screw according to claim 3, wherein the double-spiral permanent magnets are closely attached.
5. A rotor case of a permanent magnet type magnetic force screw according to claim 3, wherein the double-spiral permanent magnet is provided with an iron yoke between double spirals, the iron yoke having a double-spiral structure.
6. A rotor case of a permanent magnet type magnetic force screw according to claim 3, wherein a space is left between turns of the single-spiral permanent magnet, and a spiral iron yoke is placed in the space.
7. A rotor shell of a permanent magnet magnetic screw according to claim 1, wherein the spiral permanent magnets are spliced by segmented spiral permanent magnets.
8. The rotor shell of a permanent magnet type magnetic screw according to claim 1, wherein two semi-cylindrical single bodies are fixedly joined into a cylindrical shape by screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010099898.8A CN111342580B (en) | 2020-02-18 | 2020-02-18 | Rotor shell of permanent magnet type magnetic screw rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010099898.8A CN111342580B (en) | 2020-02-18 | 2020-02-18 | Rotor shell of permanent magnet type magnetic screw rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111342580A CN111342580A (en) | 2020-06-26 |
| CN111342580B true CN111342580B (en) | 2022-12-27 |
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ID=71185442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010099898.8A Active CN111342580B (en) | 2020-02-18 | 2020-02-18 | Rotor shell of permanent magnet type magnetic screw rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111342580B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4111411A1 (en) * | 1991-04-09 | 1992-10-15 | Papst Motoren Gmbh & Co Kg | High speed electric motor rotor with protective cover and contg. breakable components - has cover formed as screw spring of draw type with windings in untensioned state locating against each other or spaced apart |
| CN206341048U (en) * | 2016-11-26 | 2017-07-18 | 中船重工电机科技股份有限公司 | Permanent-magnet motor rotor bore seal mechanism |
| CN207082922U (en) * | 2015-12-31 | 2018-03-09 | 江苏金鼎汽车科技有限公司 | A kind of magnetic favourable turn |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105006950A (en) * | 2015-08-03 | 2015-10-28 | 哈尔滨工业大学 | Inductor type magnetic screw based on permanent-magnetic excitation and electrical excitation |
| CN205283284U (en) * | 2015-12-28 | 2016-06-01 | 江苏中能金石机电设备有限公司 | PMSM rotor sleeve |
-
2020
- 2020-02-18 CN CN202010099898.8A patent/CN111342580B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4111411A1 (en) * | 1991-04-09 | 1992-10-15 | Papst Motoren Gmbh & Co Kg | High speed electric motor rotor with protective cover and contg. breakable components - has cover formed as screw spring of draw type with windings in untensioned state locating against each other or spaced apart |
| CN207082922U (en) * | 2015-12-31 | 2018-03-09 | 江苏金鼎汽车科技有限公司 | A kind of magnetic favourable turn |
| CN206341048U (en) * | 2016-11-26 | 2017-07-18 | 中船重工电机科技股份有限公司 | Permanent-magnet motor rotor bore seal mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111342580A (en) | 2020-06-26 |
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