CN210246431U - Rotor mechanism of permanent magnet electric spindle - Google Patents
Rotor mechanism of permanent magnet electric spindle Download PDFInfo
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- CN210246431U CN210246431U CN201921557129.7U CN201921557129U CN210246431U CN 210246431 U CN210246431 U CN 210246431U CN 201921557129 U CN201921557129 U CN 201921557129U CN 210246431 U CN210246431 U CN 210246431U
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Abstract
The utility model discloses a rotor mechanism of a permanent magnet electric main shaft, which comprises a cylindrical rotor iron core, a rotor is arranged in the rotor iron core in a penetrating way and is connected with the rotor iron core in a rotating way, a plurality of arc-shaped slotted holes are arranged in the side wall of the rotor iron core, the arc-shaped slotted holes are evenly distributed along the circumferential direction of the rotor iron core, two sides of the arc-shaped slotted holes are respectively provided with oblique slotted holes, the two oblique slotted holes are distributed in an 'eight' shape, and the one end that the slant slotted hole is close to the arc slotted hole extends to the outside direction of rotor core, and the one end that the arc slotted hole was kept away from to the slant slotted hole extends to the inboard direction of rotor core, has seted up rectangular slotted hole between two adjacent slant slotted holes, and the rectangular slot hole extends along the direction of radius of rotor core, and arc slotted hole, slant slotted hole and rectangular slot hole are all run through in the lateral wall of rotor core from the front to the back, and all pack in arc slotted hole, slant slotted hole and the rectangular slot and have the permanent magnet. The utility model discloses can improve the running stability of electricity main shaft, reduce the consumption and improve the processing quality.
Description
Technical Field
The utility model relates to an electricity main shaft especially relates to a rotor mechanism of permanent magnetism electricity main shaft.
Background
In the permanent magnet type electric main shaft equipment, a permanent magnet rotor core with a magnetic core is a core component, whether the structure and the matching degree of the rotor core and a rotor are good or not is directly related to the efficiency, the stability and the like of the electric main shaft, in the existing electric main shaft, the magnetic cores in the rotor core are generally distributed in the rotor core in a cylindrical shape, and practices prove that the distribution form cannot achieve the maximum design of magnetic performance in a limited space, the electric main shaft with small volume and large torque is difficult to obtain, and the use requirement of the main shaft in the limited space is influenced.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to prior art not enough, provide a rotor mechanism that can improve the running stability of electricity main shaft, reduce the consumption, improve the processing quality.
In order to solve the technical problem, the utility model adopts the following technical scheme.
A rotor mechanism of a permanent magnet electric spindle comprises a cylindrical rotor core, wherein a rotor penetrates through the rotor core and is fixedly connected with the rotor core, a plurality of arc-shaped slotted holes are formed in the side wall of the rotor core and are uniformly distributed along the circumferential direction of the rotor core, oblique slotted holes are respectively formed in two sides of each arc-shaped slotted hole, the two oblique slotted holes are distributed in an 'eight' shape, one end, close to the arc-shaped slotted holes, of each oblique slotted hole extends towards the outer side direction of the rotor core, one end, far away from the arc-shaped slotted holes, of each oblique slotted hole extends towards the inner side direction of the rotor core, a rectangular slotted hole is formed between every two adjacent oblique slotted holes, each rectangular slotted hole extends along the radial direction of the rotor core, and the arc-shaped slotted holes, the oblique slotted holes and the rectangular slotted holes all penetrate through the side wall of the rotor core from front to, and permanent magnets are filled in the arc-shaped slotted hole, the oblique slotted hole and the rectangular slotted hole.
Preferably, a front balancing ring is fixed on the rotor, the front balancing ring is located on the front side of the rotor core, and the rotor core is fixedly connected with the front balancing ring.
Preferably, the front balancing ring covers the front end openings of the arc-shaped slotted hole, the oblique slotted hole and the rectangular slotted hole.
Preferably, a rear balance ring is fixed to the rotor, the rear balance ring is located on the rear side of the rotor core, and the rotor core is fixedly connected with the rear balance ring.
Preferably, the rear balancing ring covers rear end openings of the arc-shaped slotted hole, the oblique slotted hole and the rectangular slotted hole.
Preferably, the rotor is provided with a front threaded portion and a rear threaded portion, and the front balance ring and the rear balance ring are screwed to the front threaded portion and the rear threaded portion respectively.
Preferably, the width of the arc-shaped slotted hole is larger than that of the rectangular slotted hole.
Preferably, the size of the arc-shaped slotted hole is set as follows: the outer arc length of the arc slotted hole is as follows: and the distance between the outer arc of the arc-shaped slotted hole and the excircle of the rotor core is 10: 1.
Preferably, the size relationship between the arc-shaped slotted hole and the rectangular slotted hole is set as follows: the outer arc length of the arc slotted hole is as follows: the sum of the opening lengths of the rectangular slotted holes on the two sides of the arc-shaped slotted hole is 0.9: 1-1.15: 1.
Preferably, 4 arc-shaped slotted holes are formed in the side wall of the rotor core.
The utility model discloses an among the rotor mechanism of permanent magnetism electricity main shaft, work as behind the downthehole permanent magnet of packing of arc slotted hole, slant slotted hole and rectangular channel, with the slant slotted hole of arc slotted hole and both sides is a pair of, form 2 to north and south magnetic poles, every magnetic pole is approximate domes, and evenly distributed, and simultaneously, two slant slotted holes and middle rectangular channel demonstrate "W" shape structure of middle uplift, this structure can realize the maximize of magnetic pole area in the finite space, guarantee that the magnetic flux of the outside spoke of magnetic pole reaches the biggest, secondly, fill behind the permanent magnet in the rectangular channel in the middle of the north and south magnetic pole, separate south and north magnetic pole magnetic induction line closed circuit, and then form the magnetic bridge, above-mentioned structure sets up and makes the fixed rotor of electricity main shaft obtain the air gap density distribution that is close to sine wave under the air gap length condition, thereby reach the low, the interior permanent magnet of, The torque pulsation is small, the unit current torque output is large, the main shaft can rotate more stably, the motor rigidity is better, the surface smoothness of a processed workpiece is higher, and the production requirement and the user requirement are better met.
Drawings
Fig. 1 is a sectional view of a rotor mechanism of the present invention;
fig. 2 is an exploded view of the rotor mechanism of the present invention;
fig. 3 is a perspective view of the rotor core.
Detailed Description
The present invention will be described in more detail with reference to the accompanying drawings and examples.
The utility model discloses a rotor mechanism of a permanent magnet electric main shaft, which is shown by combining figures 1 to 3 and comprises a cylindrical rotor core 1, a rotor 2 is arranged in the rotor core 1 in a penetrating way and fixedly connected with the rotor 2, a plurality of arc-shaped slotted holes 10 are arranged in the side wall of the rotor core 1, a plurality of arc-shaped slotted holes 10 are uniformly distributed along the circumferential direction of the rotor core 1, oblique slotted holes 11 are respectively arranged at the two sides of the arc-shaped slotted holes 10, two oblique slotted holes 11 are distributed in an 'eight' shape, one end of the oblique slotted hole 11 close to the arc-shaped slotted hole 10 extends towards the outer side direction of the rotor core 1, one end of the oblique slotted hole 11 far away from the arc-shaped slotted hole 10 extends towards the inner side direction of the rotor core 1, a rectangular slotted hole 12 is arranged between two adjacent oblique slotted holes 11, the rectangular slotted hole 12 extends along the radius direction of the rotor core 1, the arc-shaped slotted hole 10, the oblique slotted hole 11 and the rectangular slotted hole 12 penetrate through the side wall of the rotor core 1 from front to back, and the permanent magnets 3 are filled in the arc-shaped slotted hole 10, the oblique slotted hole 11 and the rectangular slotted hole 12.
In the structure, after the arc slotted holes 10, the oblique slotted holes 11 and the rectangular slotted holes 12 are filled with the permanent magnets 3, the arc slotted holes 10 and the oblique slotted holes 11 on two sides thereof are used as a pair to form 2 pairs of north and south magnetic poles, each magnetic pole is approximately in an arch structure and is uniformly distributed, meanwhile, the two oblique slotted holes 11 and the rectangular slotted hole 12 in the middle thereof present a middle bulged W-shaped structure, the structure can realize maximization of the magnetic pole area in a limited space, ensure that the magnetic flux radiated outwards by the magnetic poles is maximized, secondly, after the rectangular slotted holes 12 in the middle of the north and south magnetic poles are filled with the permanent magnets, separate the magnetic induction lines of the north and south magnetic poles from a closed loop to form a magnetic bridge, and the structure enables the stator and the rotor of the electric spindle to obtain the air gap magnetic induction density distribution close to a sine wave under the condition of equal air gap length, thereby achieving the low power, The effect of large unit current torque output enables the main shaft to rotate more stably, the motor to have better rigidity and the surface smoothness of the processed workpiece to be higher, and better meets the production requirements and the user requirements.
As a preferred structure, a front balance ring 4 is fixed on the rotor 2, the front balance ring 4 is located at the front side of the rotor core 1, and the rotor core 1 is fixedly connected with the front balance ring 4.
In order to shield each slot hole at the front end, in this embodiment, the front balancing ring 4 covers the front end openings of the arc slot hole 10, the oblique slot hole 11 and the rectangular slot hole 12.
Preferably, a rear balance ring 5 is fixed to the rotor 2, the rear balance ring 5 is located at the rear side of the rotor core 1, and the rotor core 1 is fixedly connected to the rear balance ring 5.
In order to shield the slots at the rear end, in this embodiment, the rear balancing ring 5 covers the rear end openings of the arc-shaped slot 10, the oblique slot 11 and the rectangular slot 12.
In order to improve the structural tightness of the main shaft, in this embodiment, it is preferable that the rotor core 1 is interposed between the front balance ring 4 and the rear balance ring 5, and in order to fix the front balance ring 4 and the rear balance ring 5, in this embodiment, a front screw portion 20 and a rear screw portion 21 are provided on the rotor 2, and the front balance ring 4 and the rear balance ring 5 are screwed to the front screw portion 20 and the rear screw portion 21, respectively.
To further maximize the magnetic flux that the poles radiate outward, the present embodiment preferably employs the following dimensioning:
firstly, the width of the arc-shaped slotted hole 10 is larger than that of the rectangular slotted hole 12;
secondly, the size of the arc-shaped slotted hole 10 is set as follows:
the outer arc length of the arc-shaped slotted hole 10: the distance between the outer arc of the arc-shaped slotted hole 10 and the excircle of the rotor core 1 is 10: 1;
thirdly, the size relationship between the arc-shaped slotted hole 10 and the rectangular slotted hole 12 is set as follows:
the outer arc length of the arc-shaped slotted hole 10: the sum of the opening lengths of the rectangular slotted holes 12 on the two sides of the arc slotted hole 10 is 0.9: 1-1.15: 1;
in the above dimensions, the distance between the outer arc and the inner arc of the arc-shaped slotted hole 10 is larger than the width of the rectangular slotted hole 12, the ratio of the circumference of the outer arc of the arc-shaped slotted hole 10 to the distance from the outer arc to the outer circle of the rotor core 1 is 10:1, and the ratio of the sum of the circumference of the outer arc of the arc-shaped slotted hole 10 and the length of the rectangular slotted holes 12 on two sides in the same magnetic pole is 0.9:1 to 1.15: 1.
Preferably, the side wall of the rotor core 1 has 4 arc-shaped slots 10 formed therein.
In this embodiment, the permanent magnet 3 filled in the arc-shaped slot hole 10, the oblique slot hole 11, and the rectangular slot hole 12 is composed of a plurality of unit magnet pieces.
The above is only the embodiment of the present invention, and is not intended to limit the present invention, and all modifications, equivalent replacements or improvements made within the technical scope of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. A rotor mechanism of a permanent magnet electric spindle is characterized by comprising a cylindrical rotor iron core, wherein a rotor penetrates through the rotor iron core and is fixedly connected with the rotor iron core, a plurality of arc-shaped slotted holes are formed in the side wall of the rotor iron core and are uniformly distributed along the circumferential direction of the rotor iron core, oblique slotted holes are respectively formed in two sides of each arc-shaped slotted hole, two oblique slotted holes are distributed in an 'eight' shape, one end, close to the arc-shaped slotted holes, of each oblique slotted hole extends towards the outer side direction of the rotor iron core, one end, far away from the arc-shaped slotted holes, of each oblique slotted hole extends towards the inner side direction of the rotor iron core, a rectangular slotted hole is formed between every two adjacent oblique slotted holes, each rectangular slotted hole extends along the radial direction of the rotor iron core, and all the arc-shaped slotted holes, the oblique slotted holes and the rectangular slotted holes penetrate through the side wall, and permanent magnets are filled in the arc-shaped slotted hole, the oblique slotted hole and the rectangular slotted hole.
2. A rotor mechanism of a permanent magnet electric spindle according to claim 1, wherein a front balancing ring is fixed to the rotor, the front balancing ring is located at a front side of the rotor core, and the rotor core is fixedly connected to the front balancing ring.
3. A rotor mechanism of a permanent magnet electric spindle according to claim 2, wherein the front balancing ring covers front end openings of the arc-shaped slot, the oblique slot and the rectangular slot.
4. A rotor mechanism of a permanent magnet electric spindle according to claim 2, wherein a rear balance ring is fixed to the rotor, the rear balance ring is located at a rear side of the rotor core, and the rotor core is fixedly connected to the rear balance ring.
5. A rotor mechanism of a permanent magnet electric spindle according to claim 4, wherein the rear balancing ring covers rear end openings of the arc-shaped slot, the oblique slot and the rectangular slot.
6. A rotor mechanism of a permanent magnet electric spindle according to claim 5, wherein the rotor is provided with a front screw portion and a rear screw portion, and the front balance ring and the rear balance ring are screwed to the front screw portion and the rear screw portion, respectively.
7. A rotor mechanism of a permanent magnet electric spindle according to claim 1, wherein the width of the arc-shaped slot is larger than the width of the rectangular slot.
8. A rotor mechanism for a permanent magnet electric spindle according to claim 1, wherein the arc-shaped slots are dimensioned:
the outer arc length of the arc slotted hole is as follows: and the distance between the outer arc of the arc-shaped slotted hole and the excircle of the rotor core is 10: 1.
9. A rotor mechanism of a permanent magnet electric spindle according to claim 1, wherein the arc-shaped slots and the rectangular slots are in a dimensional relationship such that:
the outer arc length of the arc slotted hole is as follows: the sum of the opening lengths of the rectangular slotted holes on the two sides of the arc-shaped slotted hole is 0.9: 1-1.15: 1.
10. A rotor mechanism of a permanent magnet electric spindle according to claim 1, wherein 4 arc-shaped slots are formed in a side wall of the rotor core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921557129.7U CN210246431U (en) | 2019-09-17 | 2019-09-17 | Rotor mechanism of permanent magnet electric spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921557129.7U CN210246431U (en) | 2019-09-17 | 2019-09-17 | Rotor mechanism of permanent magnet electric spindle |
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| Publication Number | Publication Date |
|---|---|
| CN210246431U true CN210246431U (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921557129.7U Active CN210246431U (en) | 2019-09-17 | 2019-09-17 | Rotor mechanism of permanent magnet electric spindle |
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| CN (1) | CN210246431U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110492639A (en) * | 2019-09-17 | 2019-11-22 | 深圳市爱贝科精密机械有限公司 | A kind of rotor mechanism of permanent magnetism electro spindle |
-
2019
- 2019-09-17 CN CN201921557129.7U patent/CN210246431U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110492639A (en) * | 2019-09-17 | 2019-11-22 | 深圳市爱贝科精密机械有限公司 | A kind of rotor mechanism of permanent magnetism electro spindle |
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Address after: 518111 1st and 2nd floors, building A6, silicon valley power intelligent terminal Industrial Park, No.20, Dafu Industrial Zone, Aobei community, Guanlan street, Longhua District, Shenzhen City, Guangdong Province Patentee after: Shenzhen aibeike Precision Industry Co.,Ltd. Address before: 518111 2nd floor, building A6, silicon valley power intelligent terminal Industrial Park, 20 Dafu Industrial Zone, Aobei community, Guanlan street, Longhua New District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN ABIG PRECISION MACHINERY Co.,Ltd. |