CN213585316U - Permanent magnet synchronous electric spindle rotor punching sheet for lathe - Google Patents
Permanent magnet synchronous electric spindle rotor punching sheet for lathe Download PDFInfo
- Publication number
- CN213585316U CN213585316U CN202022846352.2U CN202022846352U CN213585316U CN 213585316 U CN213585316 U CN 213585316U CN 202022846352 U CN202022846352 U CN 202022846352U CN 213585316 U CN213585316 U CN 213585316U
- Authority
- CN
- China
- Prior art keywords
- magnetic steel
- punching sheet
- steel grooves
- permanent magnet
- magnet synchronous
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model relates to a permanent magnet synchronous electric main shaft rotor punching sheet for lathe, the punching sheet body is wholly annular, a plurality of rivet holes for fixing when the punching sheets are mutually stacked are evenly arranged on the ring, an even number group of magnetic steel grooves are also arranged on the ring, each group of magnetic steel grooves comprises two symmetrical magnetic steel grooves, the two magnetic steel grooves of the same group are separated by a radial rib, and a semi-circular groove is arranged at the position of the inner hole edge of the punching sheet body corresponding to the radial rib; the outer contour of the punching sheet body consists of an arc section and a convex section. All the magnetic steel grooves and the rivet holes are of symmetrical structures, so that the magnetic circuits of the yoke parts of the rotors under each pole are kept consistent; the salient pole rate of the motor is enhanced by the convex sections and the radial ribs together, so that the motor can run at higher rotating speed under the same weak magnetic current, and the constant-power weak magnetic area of the motor is prolonged; the two magnetic steel slot pairs are called as a group, so that the rotor structure has higher overload multiple and wider flux weakening speed regulation range; the magnetic steel groove guides the magnetic steel, and the magnetic steel is firmly installed and is not easy to fall off.
Description
Technical Field
The utility model belongs to the numerical control lathe field especially relates to a permanent magnetism synchronization electricity main shaft rotor is towards piece for lathe.
Background
The electric spindle is a new technology which integrates a machine tool spindle and a spindle motor into a whole and appears in the field of numerical control machines in recent years. The main shaft is a set of components and comprises an electric main shaft and accessories thereof, the electric main shaft, a high-frequency conversion device, an oil mist lubricator, a cooling device, a built-in encoder, a tool changing device and the like. The transmission structure form of the spindle motor and the machine tool spindle which are combined into a whole enables spindle parts to be firstly aligned and independent from a transmission system and an integral structure of the machine tool, and therefore, the spindle motor can be made into a spindle unit which is commonly called as an electric spindle.
The electric main shaft on the market mostly adopts a surface-mounted rotor, the electromagnetic design and the manufacturing process are relatively simple, the rare earth permanent magnet is directly pasted outside a rotor silicon steel sheet, and then a plurality of layers of weftless tapes are coated for drying and curing. However, the electric spindle needs to tell weak magnetism as well as low-speed moment, and the overload multiple requirement is high, the surface-mounted structure is laggard in comparison from the aspect of electrical performance, the surface-mounted magnetic steel is easy to fall off when the electric spindle tells rotation, and the surface-mounted rotor magnetic steel is easier to demagnetize.
Disclosure of Invention
The utility model provides a current electricity main shaft adopt the table to paste formula rotor, and the magnet steel drops easily, influences main shaft moving defect, provides a permanent magnet synchronous electricity main shaft rotor towards the piece for the lathe, sets up the magnet steel groove on the piece and is used for installing the magnet steel, towards the piece and fold the back, the magnet steel installation is firm, is difficult to drop.
The utility model discloses a concrete technical scheme does: a permanent magnet synchronous electric spindle rotor punching sheet for a lathe comprises a punching sheet body, wherein the punching sheet body is integrally annular, a plurality of rivet holes used for fixing when punching sheets are mutually laminated are uniformly formed in the ring, an even number of groups of magnetic steel grooves are also formed in the ring, each group of magnetic steel grooves comprises two symmetrical magnetic steel grooves, the two magnetic steel grooves in the same group are separated by a radial rib, and a semicircular groove is formed in the position, corresponding to the radial rib, of the edge of an inner hole of the punching sheet body; the outer contour of the punching sheet body consists of an arc section and a convex section.
After the main shaft or the rotor bushing is pressed into the rotor section, the semicircular groove can release uneven stress, so that the rotor section is not easy to deform, and the uniformity of breath after the electric main shaft is assembled is ensured; secondly, non-magnetic air is filled in the rear half circular groove, so that the direction of the magnetic force lines can be changed, and the magnetic force lines move towards the direction of the magnetic steel to form a closed loop; when the rotor core is in multiple sections, the rotor core can be guided through the magnetic steel grooves so as to ensure that the upper and lower layers of magnetic steel grooves are aligned; the rivet holes on the rotor punching sheet body can firmly fix each section of rotor punching sheet, and the magnetic steel grooves are not skewed when the inner hole is extruded when the rotor is pressed into the main shaft; the magnetic steel is guided by the magnetic steel groove, so that the magnetic steel is firmly installed and is not easy to fall off; all the magnetic steel grooves and the rivet holes are of symmetrical structures, so that the magnetic circuits of the yoke parts of the rotors under each pole are kept consistent; the salient pole rate of the motor is enhanced by the convex sections and the radial ribs together, so that the motor can run at higher rotating speed under the same weak magnetic current, and the constant-power weak magnetic area of the motor is prolonged; the two magnetic steel slot pairs are called as a group, so that the rotor structure has higher overload multiple and wider flux weakening speed regulation range.
Preferably, the convex section is linear, and the convex section is connected with the circular arc section through a diagonal section in a transition manner; the position of the convex section is positioned between two groups of adjacent magnetic steel grooves. The arc sections and the convex sections are arranged according to a certain angle radian, so that the motor has the optimal back electromotive force waveform and less harmonic content.
Preferably, the rivet hole is located on the side, close to the edge of the inner hole, of the ring, and the position of the rivet hole corresponds to that of the protruding section and is located at the same radial position.
Preferably, the number of the magnetic steel grooves is 20, the magnetic steel grooves are divided into 10 groups, the number of the protruding sections is 10, and the number of the rivet holes is 10.
Further preferably, the magnetic steel grooves are long-strip-shaped, the radial ribs between two magnetic steel grooves in the same group are symmetrical, and the two magnetic steel grooves in the same group are perpendicular to the radial ribs and are located in the tangential direction where the radial ribs are located.
Preferably, the end parts of the two separated magnetic steel grooves in the same group are inclined, and the inclination enables the two adjacent magnetic steel grooves to form the parting strips with the same width.
Preferably, the outer side edge of the end part of the two separated magnetic steel grooves in the same group is a straight edge, the straight edge is perpendicular to the end part of the magnetic steel groove, and the straight edge is parallel to the protruding section.
Further preferably, the end of the magnetic steel groove facing the parting bead is provided with a triangular salient angle towards the corner of the inner hole of the punching sheet body.
Further preferably, a semicircular marking groove is formed in the edge position of the inner hole of the punching sheet body ring. The marking grooves can ensure the consistency of the direction of the rotor punching sheet when the rotor punching sheet is laminated, and are favorable for the laminating uniformity.
The utility model has the advantages that: after the main shaft or the rotor bushing is pressed into the rotor section, the semicircular groove can release uneven stress, so that the rotor section is not easy to deform, and the uniformity of breath after the electric main shaft is assembled is ensured; secondly, non-magnetic air is filled in the rear half circular groove, so that the direction of the magnetic force lines can be changed, and the magnetic force lines move towards the direction of the magnetic steel to form a closed loop; when the rotor core is in multiple sections, the rotor core can be guided through the magnetic steel grooves so as to ensure that the upper and lower layers of magnetic steel grooves are aligned; the rivet holes on the rotor punching sheet body can firmly fix each section of rotor punching sheet, and the magnetic steel grooves are not skewed when the inner hole is extruded when the rotor is pressed into the main shaft; the magnetic steel is guided by the magnetic steel groove, so that the magnetic steel is firmly installed and is not easy to fall off; all the magnetic steel grooves and the rivet holes are of symmetrical structures, so that the magnetic circuits of the yoke parts of the rotors under each pole are kept consistent; the salient pole rate of the motor is enhanced by the convex sections and the radial ribs together, so that the motor can run at higher rotating speed under the same weak magnetic current, and the constant-power weak magnetic area of the motor is prolonged.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged schematic view of the structure of FIG. 1 according to the present invention at A;
in the figure: 1. rivet hole, 2, circular arc section, 3, protruding section, 4, magnet steel groove, 5, radial muscle, 6, mark groove, 7, half slot, 8, slash section, 9, straight flange, 10, parting bead, 11, salient angle.
Detailed Description
The invention will be further described with reference to specific embodiments and with reference to the accompanying drawings.
Example (b):
as shown in fig. 1 and fig. 2, a permanent magnet synchronous electric spindle rotor punching sheet for lathe, including towards the piece body, it is cyclic annular to be whole towards the piece body, evenly set up 10 rivet holes 1 that are used for going on fixing when range upon range of each other towards the piece on the ring, still be provided with 10 groups of magnet steel grooves 4 on the ring, each group of magnet steel groove includes the magnet steel groove of two symmetries, separate through radial muscle 5 between two magnet steel grooves of same group, radial muscle is aequilate, the position that the hole edge of towards the piece body corresponds radial muscle is provided with half slot 7, the border position towards piece body ring hole is provided with semicircular mark 6.
The outer contour of the punching sheet body is composed of an arc section 2 and a convex section 3, the arc section is 10 sections, and the convex section is 10 sections. The convex section is in a straight line shape, and the convex section is connected with the circular arc section through an inclined line section 8 in a transition way; the position of the convex section is positioned between two groups of adjacent magnetic steel grooves. The rivet hole is positioned on one side of the ring close to the edge of the inner hole, and the position of the rivet hole corresponds to the position of the protruding section and is positioned at the same radial position.
The magnetic steel grooves are in a long strip shape, the radial ribs between the two magnetic steel grooves in the same group are symmetrical, and the two magnetic steel grooves in the same group are perpendicular to the radial ribs and are located in the tangential direction of the radial ribs. The end parts of the two separated magnetic steel grooves in the same group are inclined, and the inclination enables the two adjacent magnetic steel grooves to form the parting strips 10 with the same width. The outer side edge of the end part of the two separated magnetic steel grooves in the same group is a straight edge 9, the straight edge is vertical to the end part of the magnetic steel groove, and the straight edge is parallel to the convex section. The magnetic steel groove is provided with a triangular salient angle 11 towards the corner position of the inner hole of the punching sheet body towards the end part of the parting bead.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and equivalent transformation of doing above embodiment the utility model discloses technical scheme's protection scope.
Claims (9)
1. A permanent magnet synchronous electric spindle rotor punching sheet for a lathe is characterized by comprising a punching sheet body, wherein the punching sheet body is integrally annular, a plurality of rivet holes (1) used for fixing when punching sheets are mutually laminated are uniformly formed in the ring, an even number of groups of magnetic steel grooves (4) are also formed in the ring, each group of magnetic steel grooves comprises two symmetrical magnetic steel grooves, the two magnetic steel grooves in the same group are separated by a radial rib (5), and a semicircular groove (7) is formed in the position, corresponding to the radial rib, of the edge of an inner hole of the punching sheet body; the outer contour of the punching sheet body is composed of a circular arc section (2) and a convex section (3).
2. The permanent magnet synchronous electric spindle rotor punching sheet for the lathe as claimed in claim 1, wherein the convex section is linear, and the convex section and the circular arc section are transitionally connected through an oblique line section (8); the position of the convex section is positioned between two groups of adjacent magnetic steel grooves.
3. The permanent magnet synchronous electric spindle rotor punching sheet for the lathe as claimed in claim 1, wherein the rivet hole is located on one side of the ring close to the edge of the inner hole, and the position of the rivet hole corresponds to the position of the protruding section and is located at the same radial position.
4. The permanent magnet synchronous electric spindle rotor punching sheet for the lathe according to claim 1, 2 or 3, wherein the number of the magnetic steel grooves is 20, the magnetic steel grooves are divided into 10 groups, the number of the convex sections is 10, and the number of the rivet holes is 10.
5. The permanent magnet synchronous electric spindle rotor punching sheet for the lathe according to claim 1, 2 or 3, wherein the magnetic steel grooves are in a long strip shape, the radial ribs between two opposite magnetic steel grooves in the same group are symmetrical, and the two magnetic steel grooves in the same group are perpendicular to the radial ribs and are in the tangential direction of the radial ribs.
6. The permanent magnet synchronous electric spindle rotor punching sheet for the lathe according to claim 5, wherein the separated end parts of the two magnetic steel grooves of the same group are inclined, and the inclination enables a spacing strip (10) with equal width to be formed between the two adjacent magnetic steel grooves.
7. The permanent magnet synchronous electric spindle rotor punching sheet for the lathe as claimed in claim 5, wherein the outer side edge of the separated end portions of the two magnetic steel grooves of the same group is a straight edge (9), the straight edge is perpendicular to the end portions of the magnetic steel grooves, and the straight edge is parallel to the protruding section.
8. The permanent magnet synchronous electric spindle rotor punching sheet for the lathe as claimed in claim 7, wherein a triangular salient angle (11) is arranged at the end of the magnetic steel groove facing the parting strip and facing the corner of the inner hole of the punching sheet body.
9. The permanent magnet synchronous electric spindle rotor punching sheet for the lathe according to claim 1, 2 or 3, characterized in that a semicircular marking groove (6) is arranged at the edge position of an inner hole of a punching sheet body ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022846352.2U CN213585316U (en) | 2020-12-02 | 2020-12-02 | Permanent magnet synchronous electric spindle rotor punching sheet for lathe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022846352.2U CN213585316U (en) | 2020-12-02 | 2020-12-02 | Permanent magnet synchronous electric spindle rotor punching sheet for lathe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213585316U true CN213585316U (en) | 2021-06-29 |
Family
ID=76545180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022846352.2U Active CN213585316U (en) | 2020-12-02 | 2020-12-02 | Permanent magnet synchronous electric spindle rotor punching sheet for lathe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213585316U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022115983A1 (en) | 2022-06-27 | 2023-12-28 | Hiwin Mikrosystem Corp. | Motor rotor core structure |
-
2020
- 2020-12-02 CN CN202022846352.2U patent/CN213585316U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022115983A1 (en) | 2022-06-27 | 2023-12-28 | Hiwin Mikrosystem Corp. | Motor rotor core structure |
| DE102022115983B4 (en) | 2022-06-27 | 2024-01-25 | Hiwin Mikrosystem Corp. | Motor rotor core structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112564346B (en) | High-torque-density axial magnetic field permanent magnet motor rotor structure and motor thereof | |
| CN107959361A (en) | The stator of permanent magnet torque motor and the permanent magnet torque motor with high torque density | |
| CN202634111U (en) | Subsection skewed-pole type permanent magnet synchronous motor rotor | |
| CN213585316U (en) | Permanent magnet synchronous electric spindle rotor punching sheet for lathe | |
| CN113300515B (en) | Disc type axial magnetic field permanent magnet brushless motor structure containing tangential magnet structure and method thereof | |
| CN104184284B (en) | Double magnetic circuit asynchronous starting permanent magnet synchronous motor rotor | |
| CN104184291B (en) | Two half 4 pole asynchronous starting permanent magnet synchronous motors and pole-changing windings method | |
| CN213585317U (en) | Permanent magnet synchronous motor rotor punching sheet for main shaft motor | |
| CN207652155U (en) | Rotor assembly on disc type electric machine | |
| CN210957949U (en) | Inner rotor magnetic sheet structure | |
| CN208674991U (en) | A kind of disk rotor structure and disc type electric machine | |
| CN116191728A (en) | Rotor structure and motor | |
| CN116207888A (en) | Rotor structure of spliced spoke type permanent magnet motor | |
| CN109802504A (en) | A kind of permanent magnetism magneticfocusing synchronous magnetic resistance motor and its asymmetrical rotor | |
| CN201541153U (en) | Large-diameter square-wave three-phase brushless DC motor | |
| CN201570918U (en) | Square wave three-phase brushless permanent magnet direct current motor with big and small teeth structure | |
| CN205355989U (en) | Self -starting permanent magnet synchronous motor's rotor | |
| CN211574037U (en) | Cross-tooth quadrupole hybrid magnetic bearing with novel structure | |
| CN210744861U (en) | Column type coreless motor | |
| CN109672314B (en) | Axial magnetic field stator modularization single-phase motor | |
| CN209402272U (en) | A kind of permanent magnetism magneticfocusing synchronous magnetic resistance motor and its asymmetrical rotor | |
| CN106655573A (en) | Solid rotor for high-power and high-speed asynchronous motor | |
| CN217508376U (en) | EPS motor rotor core | |
| CN208299655U (en) | Double air gaps motor | |
| CN206164227U (en) | Stator of permanent magnetic force square motor and permanent magnetic force square motor that has high rotation torque density |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |