CN111211632B - Frameless motor fixing structure - Google Patents
Frameless motor fixing structure Download PDFInfo
- Publication number
- CN111211632B CN111211632B CN202010047523.7A CN202010047523A CN111211632B CN 111211632 B CN111211632 B CN 111211632B CN 202010047523 A CN202010047523 A CN 202010047523A CN 111211632 B CN111211632 B CN 111211632B
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- Prior art keywords
- substrate
- stator
- rotor
- fixed
- hole
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
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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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
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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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
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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
- H02K7/003—Couplings; Details of shafts
Abstract
The invention provides a frameless motor fixing structure which comprises a base, a rotating shaft assembly, a stator assembly and a rotor assembly, wherein the rotating shaft assembly is rotationally connected to the base; the base comprises a first substrate and a second substrate which are oppositely arranged at intervals, a first rotating hole is formed in the first substrate, and a second rotating hole which is coaxial with the first rotating hole is formed in the second substrate; the rotating shaft assembly comprises a motor shaft, and the motor shaft respectively penetrates through the first rotating hole and the second rotating hole; the stator component comprises a circular stator, the first substrate is provided with a mounting hole which is coaxial with the first rotating hole, and the stator is accommodated and fixed in the mounting hole; the rotor assembly comprises a circular rotor, and the rotor is fixed on the motor shaft and contained in the stator. The frameless motor fixing structure provided by the invention has the advantage that the main shaft rotation precision is high.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of mechanical design and processing, in particular to a frameless motor fixing structure.
[ background of the invention ]
Unlike conventional frame motors, frame-less motors are delivered without any other components, and therefore require an engineer to work with the supplier after delivery to provide the stator and rotor of the frame-less motor with the support structure and other features as required.
Generally, the outer diameter of the stator of the frameless motor is far larger than that of the rotor spindle bearing, so that the rotor spindle can only adopt two modes of single-side cantilever support or double-side split support, otherwise, the stator and the rotor cannot be smoothly assembled in a support structure of the motor. However, the supporting structure adopting the unilateral cantilever supporting mode has small span and poor rigidity, and the main shaft is easy to jump in the operation process. And two bearings of bilateral components of a whole that can function independently supporting mode are installed respectively on two different bearing supporting seats, then these two bearing supporting seats rethread tang equipment together, though can promote supporting rigidity like this, the axiality of two bearing mounting holes after the equipment is decided by tang cooperation precision and the axiality of two bearing mounting holes and tang jointly, because the intermediate link is more, leads to the gyration precision of main shaft still can't obtain fine assurance.
In view of the above, it is desirable to provide a new frameless motor fixing structure to overcome the above-mentioned drawbacks.
[ summary of the invention ]
The invention aims to provide a frameless motor fixing structure with high main shaft rotation precision.
In order to achieve the above object, the present invention provides a frameless motor fixing structure, which includes a base, a rotating shaft assembly rotatably connected to the base, a stator assembly fixed to the base, and a rotor assembly fixed to the rotating shaft assembly; the base comprises a first substrate and a second substrate which are oppositely arranged at intervals, a first rotating hole is formed in the first substrate, and a second rotating hole which is coaxial with the first rotating hole is formed in the second substrate; the rotating shaft assembly comprises a motor shaft, and the motor shaft respectively penetrates through the first rotating hole and the second rotating hole; the stator component comprises a circular stator, the first substrate is provided with a mounting hole which is coaxial with the first rotating hole, and the stator is accommodated and fixed in the mounting hole; the rotor assembly comprises a circular rotor, and the rotor is fixed on the motor shaft and contained in the stator.
In a preferred embodiment, the rotating shaft assembly further comprises two bearings and two bearing glands for fixing the two bearings, respectively; the motor shaft comprises a main shaft and two matching shafts formed by extending from two ends of the main shaft, and the diameter of each matching shaft is smaller than that of the main shaft; the two bearings are respectively sleeved on the two matching shafts and abut against the shaft shoulders of the main shaft, the two bearings are respectively contained in the first rotating hole and the second rotating hole, and the two bearing pressing covers are respectively pressed on the corresponding bearings to realize the positioning of the motor shaft.
In a preferred embodiment, the bearing gland comprises a fixed plate and a lantern ring formed by extending from one side surface of the fixed plate, and a first through hole coaxially arranged with the lantern ring is formed in the fixed plate; the outer diameter of the lantern ring corresponds to the outer diameter of the bearing, each bearing gland is sleeved on the main shaft through the first through hole, and the lantern ring abuts against the corresponding bearing; the two bearing glands are respectively abutted against the surface of the first substrate departing from the second substrate and the surface of the second substrate departing from the first substrate, and are respectively fixedly connected with the first substrate and the second substrate through fixing pieces.
In a preferred embodiment, a snap ring is fixedly connected to the outer surface of the stator, the mounting hole is formed in one side, facing the second substrate, of the first substrate, and a first clamping table with a diameter corresponding to that of the snap ring is formed at one end, close to the second substrate, of the mounting hole; the stator assembly further comprises a stator pressing plate, the stator pressing plate is provided with a circular second through hole, the diameter of the second through hole corresponds to the outer diameter of the stator, one end of the second through hole is provided with a second clamping table, the diameter of the second clamping table corresponds to that of the clamping ring, and the stator pressing plate abuts against the surface, facing the first base plate, of the first base plate and is fixedly connected with the first base plate through a fixing piece; the two sides of the clamping ring back to back are respectively abutted against the first clamping table and the second clamping table to realize the fixed connection of the stator and the first substrate.
In a preferred embodiment, the rotor assembly further comprises a rotor adapter sleeve and a lock nut; a key groove is formed in the main shaft, and the rotor adapter sleeve is clamped in the key groove through a flat key and is connected with the main shaft key; an annular blocking sleeve is fixed on the main shaft accommodated in the mounting hole, and one end of the rotor adapter sleeve abuts against the blocking sleeve; the main shaft is provided with threads, and the locking nut is in threaded connection with the main shaft so as to tightly press one end, far away from the blocking sleeve, of the rotor switching sleeve.
In a preferred embodiment, the rotor adapter sleeve includes a fixed sleeve and a retaining ring fixed on the fixed sleeve, and two ends of the fixed sleeve respectively abut against the retaining sleeve and the lock nut; the retaining ring is annular, the outer diameter of the retaining ring is smaller than the inner diameter of the stator, the rotor is sleeved on the fixed sleeve, and one end of the rotor is abutted against the retaining ring; the rotor is fixedly connected with the fixed sleeve through a fixing piece.
In a preferred embodiment, the locking nut is a double locking nut.
In a preferred embodiment, the base further includes a bottom plate integrally formed with the first and second substrates, and the first and second substrates are perpendicular to the bottom plate.
In a preferred embodiment, the distance between the first and second base plates is greater than the axial length of the stator; the distance between the first base plate and the second base plate is greater than the axial length of the rotor.
According to the frameless motor fixing structure provided by the invention, the coaxiality of the first rotating hole and the second rotating hole is relatively unchanged by adopting an integrated two-side supporting mode, and compared with the existing single-side cantilever support and double-side split support structure, the frameless motor fixing structure has better rigidity and coaxiality, and can realize higher main shaft rotation precision. The frameless motor fixing structure provided by the invention has the advantage that the main shaft rotation precision is high.
[ description of the drawings ]
Fig. 1 is a sectional view of a frameless motor fixing structure provided in the present invention.
Fig. 2 is a partially enlarged view of the area a shown in fig. 1.
[ detailed description ] embodiments
In order to make the objects, technical solutions and advantageous effects of the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1, the present invention provides a frameless motor fixing structure 100, which includes a base 10, a rotating shaft assembly 20 rotatably connected to the base 10, a stator assembly 30 fixed to the base 10, and a rotor assembly 40 fixed to the rotating shaft assembly 30.
Referring to fig. 2, the susceptor 10 includes a first substrate 11 and a second substrate 12 disposed opposite to each other at an interval, the first substrate 11 is formed with a first rotating hole 111, and the second substrate 12 is formed with a second rotating hole 121 disposed coaxially with the first rotating hole 111. The rotating shaft assembly 20 includes a motor shaft 21, and the motor shaft 21 passes through the first rotating hole 111 and the second rotating hole 121, respectively. The stator assembly 30 includes a circular stator 31, the first base plate 11 is provided with a mounting hole 112 coaxially disposed with the first rotating hole 111, and the stator 31 is accommodated and fixed in the mounting hole 112. The rotor assembly 40 includes a circular ring-shaped rotor 41, and the rotor 41 is fixed to the motor shaft 21 and is accommodated in the stator 31. Wherein, base 10 adopts both sides support mode just first commentaries on classics hole 111 with the coaxial setting in second commentaries on classics hole 121 compares in traditional bilateral split type bearing structure axiality precision index guarantee more easily, compare in traditional unilateral cantilever support mode rigidity better.
Furthermore, the base 10 further includes a bottom plate 13 integrally formed with the first substrate 11 and the second substrate 12, and the first substrate 11 and the second substrate 12 are perpendicular to the bottom plate 13. The base 10 adopts an integrated two-side supporting mode, so that the coaxiality of the first rotating hole 111 and the second rotating hole 121 is relatively unchanged, and compared with the existing single-side cantilever support and double-side split support structure, the single-side cantilever support and double-side split support structure has better rigidity and coaxiality, and higher spindle rotation precision can be realized.
In this embodiment, the rotating shaft assembly 20 further includes two bearings 22 and two bearing glands 23 for fixing the two bearings 22, respectively. The motor shaft 21 includes a main shaft 211 and two engaging shafts 212 formed by extending from both ends of the main shaft 211, and a diameter of the engaging shafts 212 is smaller than that of the main shaft 211. The two bearings 22 are respectively sleeved on the two matching shafts 212 and abut against the shaft shoulders of the main shaft 211, the two bearings 22 are respectively accommodated in the first rotating hole 111 and the second rotating hole 121, and the two bearing pressing covers 23 respectively press the corresponding bearings 22 to position the motor shaft 21. The two ends of the motor shaft 21 are respectively supported by the two bearings 22, and the outer rings of the two bearings 22 are respectively limited by the corresponding bearing glands 23, so that the motor shaft 21 is fixed.
Furthermore, the bearing cover 23 includes a fixing plate 231 and a collar 232 extending from a side surface of the fixing plate 231, and the fixing plate 231 is provided with a first through hole 2311 disposed coaxially with the collar 232. The outer diameter of the collar 232 corresponds to the outer diameter of the bearing 22, each bearing gland 23 is sleeved on the main shaft 211 through the first through hole 2311, and the collar 232 abuts against the outer ring of the corresponding bearing 22. The two bearing glands 23 respectively abut against the surface of the first substrate 11 away from the second substrate 12 and the surface of the second substrate 12 away from the first substrate 11, and are respectively and fixedly connected with the first substrate 11 and the second substrate 12 through fixing parts such as screws, so that the motor shaft 21 is fixed, and the rotation precision of the motor shaft 21 is higher.
In this embodiment, a snap ring 311 is fixedly connected to an outer surface of the stator 31, the mounting hole 112 is disposed on a side of the first substrate 11 facing the second substrate 12, and a first clamping portion 1121, having a diameter corresponding to that of the snap ring 311, is disposed at an end of the mounting hole 112 close to the second substrate 12. The stator assembly 30 further includes a stator pressing plate 32, the stator pressing plate 32 is provided with a circular second through hole 321, the diameter of the second through hole 31 corresponds to the outer diameter of the stator 31, one end of the second through hole 321 is provided with a second clamping table 3211, the diameter of which corresponds to the clamping ring 311, and the stator pressing plate 32 abuts against the surface of the first substrate 11 facing the first substrate 12 and is fixedly connected with the first substrate 11 through a fixing member. The two opposite sides of the snap ring 311 respectively abut against the first clamping table 1121 and the second clamping table 3211 to fixedly connect the stator 31 and the first substrate 11. The stator 31 is accommodated in the accommodating hole 112, and the snap ring 311 is clamped between the first clamping platform 1121 and the second clamping platform 3211, so that the stator 31 is fixedly connected with the first base 11, and the stator pressing plate 32 does not affect the installation of the rotor 41.
The rotor assembly 40 further includes a rotor adapter sleeve 42 and a lock nut 43. A key groove 2111 is formed in the main shaft 211, and the rotor adapter sleeve 42 is clamped in the key groove 2111 through a flat key and connected with the main shaft 211 in a key manner, so that the rotor adapter sleeve 42 and the main shaft 211 are prevented from rotating relatively. An annular blocking sleeve 213 is fixed on the main shaft 211 accommodated in the mounting hole 112, and one end of the rotor adapter sleeve 42 abuts against the blocking sleeve 213. The main shaft 211 is provided with a thread, and the locking nut 43 is in threaded connection with the main shaft 211 to further press one end of the rotor adapter sleeve 42 away from the blocking sleeve 213. Two ends of the rotor adapter sleeve 42 respectively abut against the blocking sleeve 213 and the locking nut 43, so that the rotor adapter sleeve 42 and the main shaft 211 are prevented from moving axially.
The rotor adapter sleeve 42 comprises a fixed sleeve 421 and a retaining ring 422 fixed on the fixed sleeve 421, and two ends of the fixed sleeve 421 respectively abut against the retaining sleeve 213 and the locking nut 43. The retaining ring 422 is annular and has an outer diameter smaller than the inner diameter of the stator 31, the rotor 41 is sleeved on the fixing sleeve 421, and one end of the rotor abuts against the retaining ring 422. The rotor 41 is fixedly connected to the fixing sleeve 421 by fixing members such as screws. The rotor 41 is constrained by the retaining ring 422 and fixedly connected to the fixing member, so as to prevent the rotor 41 from being separated from the rotor adapter sleeve 42.
In this embodiment, the lock nut 43 is a double lock nut, and is used for preventing the lock nut 43 from loosening.
In this embodiment, the distance between the first substrate 11 and the second substrate 12 is greater than the axial length of the stator 31, and the distance between the first substrate 11 and the second substrate 12 is greater than the axial length of the rotor 41, so as to facilitate the installation of the stator 31 and the rotor 41.
Specifically, during assembly, the stator 31 is accommodated in the accommodating hole 11 in the first phase, and the stator 31 and the first substrate 11 are fixedly mounted through the stator pressing plate 32. Then, the rotor 41 is fixed on the rotor adapter sleeve 42, one end of the motor shaft 21 sequentially passes through the second rotating hole 121, the lock nut 43, the rotor adapter sleeve 42, the stator 31 and the first rotating hole 111, and then the lock nut 43 is moved to make the rotor adapter sleeve 42 away from the lock nut 43 tightly abut against the retaining sleeve 213. Then, the two bearings 212 are sleeved on the matching shaft 212 and respectively abutted against the shaft shoulders of the main shaft 211, then the lantern rings 232 of the two bearing glands 23 are respectively abutted against the shell of the corresponding bearing 22, and the fixing plates 231 of the two bearing glands 23 are respectively fixed with the first base plate 11 and the second base plate 12, so that the bearings 21 are limited.
According to the frameless motor fixing structure 100 provided by the invention, the coaxiality of the first rotating hole 111 and the second rotating hole 121 is relatively unchanged by adopting an integrated two-side supporting mode, and compared with the existing single-side cantilever support and double-side split support structure, the frameless motor fixing structure has better rigidity and coaxiality, and can realize higher spindle rotation precision. The frameless motor fixing structure 100 provided by the invention has high main shaft rotation precision.
The invention is not limited solely to that described in the specification and embodiments, and additional advantages and modifications will readily occur to those skilled in the art, so that the invention is not limited to the specific details, representative apparatus, and illustrative examples shown and described herein, without departing from the spirit and scope of the general concept as defined by the appended claims and their equivalents.
Claims (8)
1. A frameless motor fixed knot constructs which characterized in that: the device comprises a base, a rotating shaft assembly rotationally connected to the base, a stator assembly fixed on the base and a rotor assembly fixed on the rotating shaft assembly; the base comprises a first substrate and a second substrate which are oppositely arranged at intervals, a first rotating hole is formed in the first substrate, and a second rotating hole which is coaxial with the first rotating hole is formed in the second substrate; the rotating shaft assembly comprises a motor shaft, and the motor shaft respectively penetrates through the first rotating hole and the second rotating hole; the stator component comprises a circular stator, the first substrate is provided with a mounting hole which is coaxial with the first rotating hole, and the stator is accommodated and fixed in the mounting hole; the rotor assembly comprises an annular rotor, and the rotor is fixed on the motor shaft and accommodated in the stator;
a clamping ring is fixedly connected to the outer surface of the stator, the mounting hole is formed in one side, facing the second substrate, of the first substrate, and a first clamping table with the diameter corresponding to that of the clamping ring is arranged at one end, close to the second substrate, of the mounting hole; the stator assembly further comprises a stator pressing plate, the stator pressing plate is provided with a circular second through hole, the diameter of the second through hole corresponds to the outer diameter of the stator, one end of the second through hole is provided with a second clamping table, the diameter of the second clamping table corresponds to that of the clamping ring, and the stator pressing plate abuts against the surface, facing the first base plate, of the first base plate and is fixedly connected with the first base plate through a fixing piece; the two sides of the clamping ring back to back are respectively abutted against the first clamping table and the second clamping table to realize the fixed connection of the stator and the first substrate.
2. The frameless motor fixing structure of claim 1, wherein: the rotating shaft assembly also comprises two bearings and two bearing glands which are respectively used for fixing the two bearings; the motor shaft comprises a main shaft and two matching shafts formed by extending from two ends of the main shaft, and the diameter of each matching shaft is smaller than that of the main shaft; the two bearings are respectively sleeved on the two matching shafts and abut against the shaft shoulders of the main shaft, the two bearings are respectively contained in the first rotating hole and the second rotating hole, and the two bearing pressing covers are respectively pressed on the corresponding bearings to realize the positioning of the motor shaft.
3. The frameless motor fixing structure of claim 2, wherein: the bearing gland comprises a fixed plate and a lantern ring formed by extending from the surface of one side of the fixed plate, and a first through hole coaxially arranged with the lantern ring is formed in the fixed plate; the outer diameter of the lantern ring corresponds to the outer diameter of the bearing, each bearing gland is sleeved on the matching shaft through the first through hole, and the lantern ring abuts against the corresponding bearing; the two bearing glands are respectively abutted against the surface of the first substrate departing from the second substrate and the surface of the second substrate departing from the first substrate, and are respectively fixedly connected with the first substrate and the second substrate through fixing pieces.
4. The frameless motor fixing structure of claim 3, wherein: the rotor assembly further comprises a rotor switching sleeve and a locking nut; a key groove is formed in the main shaft, and the rotor adapter sleeve is clamped in the key groove through a flat key and is connected with the main shaft key; an annular blocking sleeve is fixed on the main shaft accommodated in the mounting hole, and one end of the rotor adapter sleeve abuts against the blocking sleeve; the main shaft is provided with threads, and the locking nut is in threaded connection with the main shaft so as to tightly press one end, far away from the blocking sleeve, of the rotor switching sleeve.
5. The frameless motor fixing structure of claim 4, wherein: the rotor switching sleeve comprises a fixed sleeve and a baffle ring fixed on the fixed sleeve, and two ends of the fixed sleeve respectively abut against the baffle sleeve and the locking nut; the retaining ring is annular, the outer diameter of the retaining ring is smaller than the inner diameter of the stator, the rotor is sleeved on the fixed sleeve, and one end of the rotor is abutted against the retaining ring; the rotor is fixedly connected with the fixed sleeve through a fixing piece.
6. The frameless motor fixing structure of claim 4, wherein: the locking nut is a double locking nut.
7. The frameless motor fixing structure of claim 1, wherein: the base further comprises a bottom plate integrally formed with the first substrate and the second substrate, and the first substrate and the second substrate are perpendicular to the bottom plate.
8. The frameless motor fixing structure of claim 7, wherein: the distance between the first substrate and the second substrate is greater than the axial length of the stator; the distance between the first base plate and the second base plate is greater than the axial length of the rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010047523.7A CN111211632B (en) | 2020-01-16 | 2020-01-16 | Frameless motor fixing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010047523.7A CN111211632B (en) | 2020-01-16 | 2020-01-16 | Frameless motor fixing structure |
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| Publication Number | Publication Date |
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| CN111211632A CN111211632A (en) | 2020-05-29 |
| CN111211632B true CN111211632B (en) | 2021-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010047523.7A Active CN111211632B (en) | 2020-01-16 | 2020-01-16 | Frameless motor fixing structure |
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| Country | Link |
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| CN (1) | CN111211632B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09219950A (en) * | 1996-02-14 | 1997-08-19 | Yaskawa Electric Corp | Frameless motor |
| CN204992958U (en) * | 2015-08-07 | 2016-01-20 | 南车株洲电机有限公司 | Large -scale permanent -magnet machine decides, rotor attaches together device |
| CN108222932A (en) * | 2018-01-31 | 2018-06-29 | 湖北环电磁装备工程技术有限公司 | The cutting part of heading machine driving device that a kind of no frame permanent magnet synchronous motor directly drives |
| CN207819655U (en) * | 2018-01-31 | 2018-09-04 | 湖北环一电磁装备工程技术有限公司 | A kind of wheel driver that no frame permanent magnet synchronous motor directly drives |
| CN109525077A (en) * | 2018-12-18 | 2019-03-26 | 北京遥感设备研究所 | A kind of micro-machine rotor mounting device and application method |
-
2020
- 2020-01-16 CN CN202010047523.7A patent/CN111211632B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09219950A (en) * | 1996-02-14 | 1997-08-19 | Yaskawa Electric Corp | Frameless motor |
| CN204992958U (en) * | 2015-08-07 | 2016-01-20 | 南车株洲电机有限公司 | Large -scale permanent -magnet machine decides, rotor attaches together device |
| CN108222932A (en) * | 2018-01-31 | 2018-06-29 | 湖北环电磁装备工程技术有限公司 | The cutting part of heading machine driving device that a kind of no frame permanent magnet synchronous motor directly drives |
| CN207819655U (en) * | 2018-01-31 | 2018-09-04 | 湖北环一电磁装备工程技术有限公司 | A kind of wheel driver that no frame permanent magnet synchronous motor directly drives |
| CN109525077A (en) * | 2018-12-18 | 2019-03-26 | 北京遥感设备研究所 | A kind of micro-machine rotor mounting device and application method |
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| Publication number | Publication date |
|---|---|
| CN111211632A (en) | 2020-05-29 |
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