CN204835888U - Step -by -step linear electric motor is born to high axial - Google Patents
Step -by -step linear electric motor is born to high axial Download PDFInfo
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- CN204835888U CN204835888U CN201520483979.2U CN201520483979U CN204835888U CN 204835888 U CN204835888 U CN 204835888U CN 201520483979 U CN201520483979 U CN 201520483979U CN 204835888 U CN204835888 U CN 204835888U
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Abstract
The utility model relates to a step -by -step linear electric motor is born to high axial, include: the rotor, 4 angular contact bearing install at the rotor both ends, the stator sets up with the rotor relatively. Compared with the prior art, the utility model has the advantages of the axial load who bears is high, longe -lived.
Description
Technical field
The utility model relates to a kind of motor, especially relates to a kind of high axial carrying step-by-step linear electric motor.
Background technology
Existing stepping motor all adopts traditional deep groove ball bearing to bear the moving loads of radial load.And deep groove ball bearing is because its structure is simple, can less by size design, thus be applied in well in the middle of stepping motor.But the step-by-step linear electric motor at present rotary motion being converted to rectilinear motion increases sharply, the groundwork load of this novel stepping motor is bi-directional axial load, in this case, how to solve the shortcoming that deep groove ball bearing bears loaded capability deficiency, also just become each producer's technical research to need the matter of utmost importance solved.
Existing solution has two kinds: one is designed in motor by plain thrust bearing, although this way can the axial carrying capacity of elevator system, its shortcoming is that motor almost can not bear radial load completely.Wherein a kind of typical execution mode, adopts nut in the structure of motor internal, and uses plane bearing.Another kind of typical execution mode, adopts nut in the structure of outside motor, and uses plane bearing.
A kind of way is also had to be in motor by double row angular contact design bearing, to promote bi-directional axial load carrying capacity, but the shortcoming of this way needs in motor to settle double-row bearing simultaneously, need to take very long axial space, thus the power density of motor is declined to a great extent.Wherein a kind of typical execution mode, adopts nut in the structure of motor internal, and uses double row angular contact bearing.Another kind of typical execution mode, adopts nut in the structure of outside motor, and uses double row angular contact bearing.
Utility model content
The purpose of this utility model be exactly in order to overcome above-mentioned prior art exist defect and a kind of high axial carrying step-by-step linear electric motor is provided.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of high axial carrying step-by-step linear electric motor, is characterized in that, comprising:
Rotor;
4 angular contact bearings, are arranged on two ends of rotor portion;
Stator, is oppositely arranged with rotor.
Preferably, 4 described angular contact bearings are provided with one, two or four.
Preferably, 4 described angular contact bearings comprise outer ring, inner ring and ball, and described outer ring is located at outside inner ring, and described ball is arranged between outer ring and inner ring.
Preferably, described outer ring and inner ring are equipped with the arcuate groove of rolling for ball.
Preferably, 4 described angular contact bearings are single ditch four angular contact bearing.
Preferably, 4 described angular contact bearings are two raceway angular contact bearings.
Preferably, 4 described angular contact bearings are outer fissure four angular contact bearing.
Preferably, described rotor is the rotor of band nut.
Preferably, described rotor is the rotor of band screw rod.
Compared with prior art, the utility model has the following advantages:
1) axial load of bearing is high, and the axial load can born compared to traditional step-by-step linear electric motor improves 3 times or more.
2) under same axial load, the life-span is longer, makes this step-by-step linear electric motor reach 5 times of traditional step-by-step linear electric motor life-span or more.
3) power of motor density can do height, compared under equal length, uses the stepping motor of plane bearing, and the large I of thrust promotes more than 10%.
4) end-play and gap less, substantially increase the linear positions.
5) can motor volume be designed less, be applied to the occasion higher to space requirement.
Accompanying drawing explanation
Fig. 1 is the electric machine structure schematic diagram of embodiment 1;
Fig. 2 is the electric machine structure schematic diagram of embodiment 2;
Fig. 3 is the structural representation of 4 angular contact bearings.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
Embodiment
As shown in Figure 1, high axial carrying step-by-step linear electric motor, comprising: the rotor 1 of band nut; 4 angular contact bearings 2 (having another name called four-point contact ball), are arranged on two ends of rotor portion; Stator 3, is oppositely arranged with rotor.
4 described angular contact bearings 2 are provided with one, two or four.4 described angular contact bearings 2 comprise outer ring, inner ring and ball, and described outer ring is located at outside inner ring, and described ball is arranged between outer ring and inner ring.
Described outer ring and inner ring are equipped with the arcuate groove of rolling for ball.4 described angular contact bearings are single ditch four angular contact bearing, two raceway angular contact bearing or outer fissure four angular contact bearing.
Embodiment 2
As shown in Figure 2, described rotor is the rotor 4 of band screw rod, and all the other are with embodiment 1.
Claims (9)
1. a high axial carrying step-by-step linear electric motor, is characterized in that, comprising:
Rotor;
4 angular contact bearings, are arranged on two ends of rotor portion;
Stator, is oppositely arranged with rotor.
2. the high axial carrying step-by-step linear electric motor of one according to claim 1, is characterized in that, 4 described angular contact bearings are provided with one, two or four.
3. the high axial carrying step-by-step linear electric motor of one according to claim 1, is characterized in that, 4 described angular contact bearings comprise outer ring, inner ring and ball, and described outer ring is located at outside inner ring, and described ball is arranged between outer ring and inner ring.
4. the high axial carrying step-by-step linear electric motor of one according to claim 3, is characterized in that, described outer ring and inner ring are equipped with the arcuate groove of rolling for ball.
5. the high axial carrying step-by-step linear electric motor of one according to claim 1, is characterized in that, 4 described angular contact bearings are single ditch four angular contact bearing.
6. the high axial carrying step-by-step linear electric motor of one according to claim 1, is characterized in that, 4 described angular contact bearings are two raceway angular contact bearings.
7. the high axial carrying step-by-step linear electric motor of one according to claim 1, is characterized in that, 4 described angular contact bearings are outer fissure four angular contact bearing.
8. the high axial carrying step-by-step linear electric motor of one according to claim 1, is characterized in that, described rotor is the rotor of band nut.
9. the high axial carrying step-by-step linear electric motor of one according to claim 1, is characterized in that, described rotor is the rotor of band screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520483979.2U CN204835888U (en) | 2015-07-06 | 2015-07-06 | Step -by -step linear electric motor is born to high axial |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520483979.2U CN204835888U (en) | 2015-07-06 | 2015-07-06 | Step -by -step linear electric motor is born to high axial |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204835888U true CN204835888U (en) | 2015-12-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520483979.2U Active CN204835888U (en) | 2015-07-06 | 2015-07-06 | Step -by -step linear electric motor is born to high axial |
Country Status (1)
| Country | Link |
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| CN (1) | CN204835888U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329876A (en) * | 2015-07-06 | 2017-01-11 | 上海鸣志电器股份有限公司 | High axial bearing stepping linear motor |
-
2015
- 2015-07-06 CN CN201520483979.2U patent/CN204835888U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329876A (en) * | 2015-07-06 | 2017-01-11 | 上海鸣志电器股份有限公司 | High axial bearing stepping linear motor |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |