CN109194079A - A kind of AC permanent magnet synchronous motor and its manufacturing method - Google Patents
A kind of AC permanent magnet synchronous motor and its manufacturing method Download PDFInfo
- Publication number
- CN109194079A CN109194079A CN201811195887.9A CN201811195887A CN109194079A CN 109194079 A CN109194079 A CN 109194079A CN 201811195887 A CN201811195887 A CN 201811195887A CN 109194079 A CN109194079 A CN 109194079A
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- Prior art keywords
- brake
- stator
- rotor
- permanent magnet
- magnet synchronous
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 230000005284 excitation Effects 0.000 claims abstract description 27
- 230000005611 electricity Effects 0.000 claims abstract description 25
- 238000004804 winding Methods 0.000 claims abstract description 19
- 230000004308 accommodation Effects 0.000 claims abstract description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- 229910052742 iron Inorganic materials 0.000 claims 1
- 230000005389 magnetism Effects 0.000 claims 1
- 230000005622 photoelectricity Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 6
- 239000000696 magnetic material Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
-
- 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
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
- H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
- H02K1/2773—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect consisting of tangentially magnetized radial magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
- H02K29/10—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using light effect devices
-
- 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
-
- 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
- H02K7/106—Structural association with clutches, brakes, gears, pulleys or mechanical starters with dynamo-electric brakes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The present invention is a kind of AC permanent magnet synchronous motor, the motor includes stator, rotor, end cap, housing and without excitation type electricity loss brake, rotor core is fixedly installed in the shaft of motor, no excitation type electricity loss brake is located between the anti-load side of stator and rear end cap, and at least part is overlapped radially with stator winding；Stator is set to rotor outer periphery, stator periphery, rotor side and shaft periphery form accommodation space, accommodation space can accommodate the intersection of no excitation type electricity loss brake, stator winding overhangs minimum diameter and without there are gaps between excitation type electricity loss brake maximum outside diameter.AC permanent magnet synchronous motor in the present invention is compact-sized simple, easy for installation, realizes the slimming of motor entire length in the axial direction.
Description
Technical field
The present invention relates to motor technology fields, and in particular to one kind realizes the alternating-current synchronous of slimming in the axial direction
Motor.
Background technique
In AC permanent magnet synchronous motor, brake is a kind of to keep braking or emergency braking to have motor rotor position
Mechanism is imitated, no excitation type electricity loss brake is exactly one of which, and the AC permanent magnet synchronous motor using the type brake exists
It is largely applied in industrial carrying machine people, FA machinery, in the actual design of motor, manufacture, but because of brake structural, electricity
The dimensional problem of motivation component, motor overall length is generally longer, and then will affect mechanical, equipment installation dimension demand.
In the prior art, the AC permanent magnet synchronous motor position of brake in the axial direction is located at stator load side or anti-
Load side is designed side by side with stator, manufactures, and motor overall length is longer.
Patent CN201608610 discloses a kind of Permanent-magnet Synchronous Motors for Pumping Unit, in permasyn morot ontology
Tail end output shaft on increase a brake hub, and cover after permasyn morot one brake support frame of installation, system
Brake is installed on dynamic device bracket, has shield outside brake, brake hub is with machine shaft positive and negative rotation.However, should
The electromotor brake of patent is placed on the brake support frame on rear side of motor (with rear end cap one), since the supporting structure is multiple
It is miscellaneous, and thin-wall part, therefore difficulty of processing is big, it is at high cost；And 2 brakes of every, the motor of patent fixed installation, such as encounter
Brake force can only not enough increase base specification, increase cost and wasting space.
Therefore, from the point of view of the industry of products application and the feedback in market, it is desirable to the overall length for motor
Carry out a degree of optimization.
Summary of the invention
In order to overcome the above-mentioned deficiency of the prior art, it is dynamic that the purpose of the present invention is to provide a kind of AC permanent magnet synchronous
Machine, the electric motor structure is compact simple, easy for installation, realizes the slimming of motor entire length in the axial direction.
The present invention provides a kind of AC permanent magnet synchronous motor, the motor include stator, rotor, end cap, housing and
Without excitation type electricity loss brake, it is characterised in that: rotor core is fixedly installed in the shaft of motor, no excitation type power loss system
Dynamic device is located between the anti-load side of stator and rear end cap, and at least part is overlapped radially with stator winding；Stator setting
In rotor outer periphery, stator periphery, rotor side and shaft periphery form accommodation space, and accommodation space can accommodate no excitation type power loss
The intersection of brake, stator winding overhangs minimum diameter and without existing between excitation type electricity loss brake maximum outside diameter between
Gap.
Further, the intersection of the no excitation type electricity loss brake is bottom plate, brake rotor, brake rotor
Hub and armature plate.
Further, stator includes casing, stator core and stator winding, and stator core and casing are interference fitted, stator
Winding protrudes outward extended relative to stator core.
Further, rotor includes rotor core, shaft and permanent magnet, and rotor core and shaft are interference fitted.
Further, the permanent magnet includes multiple set of permanent magnets at and being uniformly arranged alternately in a manner of the pole N, the pole S
There are gaps between rotor core exterior surface, the maximum outside diameter and stator core internal diameter of rotor.
Further, the no excitation type electricity loss brake further includes coil and brake stator, brake coil and system
Dynamic device stator is located on the outside of stator core.
Further, the motor further includes photoelectric encoder, and the encoder is located at the anti-load side of the stator
Roller end, outside sealed by encoder housing, the rotation position of rotor is detected.
Further, design has brake installation positioning spigot on rear end cap 5, and the inner ring of brake and end face are stopped with described
The shape of mouth positioning matches.
Further, rear end cap design has a reinforcing rib, the reinforcing rib by brake and photoelectric encoder separate it is default away from
From.
The present invention also provides a kind of manufacturing methods to above-mentioned AC permanent magnet synchronous motor, first by the inner ring of brake and
End face is placed in the seam allowance positioning of end cap, and then brake is fastened on rear end cap with screw.
The present invention have compared with prior art it is below the utility model has the advantages that
Present invention employs no excitation type electricity loss brakes to be solved by improvement of the brake in the structure of motor
Slimming and miniaturization issues, at least partly brake are overlapped radially with stator winding, to realize motor entire length
Slimming in the axial direction.
It is simple without manufacturing method of the excitation type electricity loss brake on AC permanent magnet synchronous motor in the present invention, it can be steady
Fixed is fixed on brake on motor, and avoids the phase between brake coil and photoelectric encoder in use
It mutually influences, and then influences the control precision of motor.
Detailed description of the invention
Fig. 1 is the axial cross section structural schematic diagram of AC permanent magnet synchronous motor；
Fig. 2 for no excitation type electricity loss brake axial cross section structural schematic diagram.
Wherein, 1 stator；11 casings；12 stator winding；13 stator cores；2 rotors；21 permanent magnets；22 rotor cores；23
Shaft；3 without excitation type electricity loss brake；31 bottom plates；32 brake rotors；33 brake rotor hubs；34 armature plates；35 springs；
36 brake coils；37 brake stators；4 screws；5 rear end caps；51 rear end cap reinforcing ribs；6 bearings；7 photoelectric encoders；8 compile
Code device housing；9 circlips；10 flat keys.
Specific embodiment
The following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
The present embodiment is illustrated with a kind of use without the AC permanent magnet synchronous motor of excitation type electricity loss brake, knot
Structure is as shown in Figure 1, the motor should include stator 1, rotor 2, without excitation type electricity loss brake 3, rear end cap 5, photoelectric coding
Device 7 and encoder housing 8.No excitation type electricity loss brake 3 and photoelectric encoder 7 are assemblied on motor simultaneously, the braking
Device 3 is located at the anti-load side of stator 1, and brake 3 is at least partly overlapped with stator winding 12 radially, and the encoder 7 is located at
The end of the anti-load side shaft 23 of stator.
In addition, in the present specification, load side refer to shaft 23 relative to motor direction outstanding (on the left of such as Fig. 1), i.e.,
Connect mechanical side；Anti- load side refers to the opposite direction of load side (such as Fig. 1 on the right side of), i.e., opposite relative to the prominent side of shaft
The direction of photoelectric encoder 7 is installed.
In the present embodiment, stator 1 includes casing 11, stator core 13 and stator winding 12, and rotor 2 includes rotor core
22, shaft 23 and permanent magnet 21.The rotation of rotor 2 is shape by the interaction in stator winding 12 and the generation of permanent magnet 21 magnetic field
At.
Stator core 13 and casing 11 are interference fitted, and stator winding 12 is made of multiple stator coils (not shown), stator
Coil is successively wrapped on stator core 13 by coiling requirement, and the anti-load side of stator 1 with Y-shaped connection by its starting point with
Tail end carries out wiring processing.Stator winding 12 protrudes outward extended, the diameter of the protrusion relative to stator core 13
The part-structure of no excitation type electricity loss brake can be accommodated inwardly.
Rotor core 22 and shaft 23 are interference fitted, and permanent magnet 21 includes multiple set of permanent magnets at and with the pole N, the pole S
Mode is uniformly alternately secured at 22 outer surface of rotor core, deposits between 13 internal diameter of maximum outside diameter and stator core of rotor 2
In air gap.
Photoelectric encoder 7 is located at 23 end of shaft of the anti-load side of the stator 1, and outside is sealed by encoder housing 8, makes
It is screwed to shaft 23 and rear end cap 5, is detected for the rotation position to rotor 2.
No excitation electricity loss brake 3 is used for the holding braking or emergency braking of rotor 2, and brake 3 includes bottom plate 31, braking
Device rotor 32, brake rotor hub 33, armature plate 34 and spring 35, brake coil 36 and brake stator 37.Brake 3 is
The closed no excitation electricity loss brake of spring, between the anti-load side of motor stator 1 and rear end cap 5, from the anti-load of stator 1
Side is arranged to rear end cap 5 with the sequence of bottom plate 31, brake rotor 32, armature plate 34, brake stator 37.
When brake 3 assembles, brake rotor hub 33 is fastened in shaft 23 by circlip 9 and flat key 10, is braked
After device 3 assembles, brake rotor 32 and brake rotor hub 33 are in clearance fit state, when brake power-off, pass through bullet
The pressure that spring 35 applies armature plate 34, the friction for the generation that contacts with each other between bottom plate 31, armature plate 34 and brake rotor 32
Power makes brake rotor hub 33 be in on-position, so that rotor 2 is in on-position.
After brake 3 assembles, at least partly it is overlapped radially with stator winding 12, to realize motor entire length in axis
Upward slimming.The present embodiment motor radial intersection is bottom plate 31, brake rotor 32,33 and of brake rotor hub
Armature plate 34, motor radial intersection guarantee between 12 minimum diameter of stator winding and 3 maximum outside diameter of brake there are gap,
And brake coil 36 and brake stator 37 are located at 13 outside of stator core, are not belonging to motor radial intersection.
Design has brake to install positioning spigot on rear end cap 5, to guarantee the convenient and accuracy of the assembly of brake 3.Peace
When dress, after the inner ring of brake stator 37 and end face are placed in seam allowance positioning, it is fastened on rear end cap 5 with screw 4, and spiral shell
Nail 4 is un-conducted magnetic material.
Bearing 6 is between shaft 23 and rear end cap 5, and bearing inner race and shaft 23 are interference fitted, and outer ring is fixed to rear end
The bearing chamber of lid 5.Bearing 6 can be the gentle touchdown formula rolling bearing with dustproof cover, can play the rotation of support rotor 2 and sealing
The effect of component, the friction powder for preventing brake rotor 32 from accidentally generating in use enter photoelectric encoder 7,
And then influence the control precision of motor.
In addition, the design of rear end cap 5 has a reinforcing rib 51, the size of reinforcing rib 51 should while guaranteeing component use intensity,
Guarantee that brake 3 separates enough distances with photoelectric encoder 7, further decreases because brake coil 36 produces in use
The influence that raw leakage magnetic flux carries out encoder 7.
It, can by calculating the size for adjusting and reducing above-mentioned rear end cap reinforcing rib 51 on the basis of guaranteeing strength of parts
Further it is thinned motor in the axial direction, while to reduce the leakage magnetic flux pair that brake coil 36 generates in use
Un-conducted magnetic material can be selected in the influence of encoder 7, shaft 23.Preferably, to the anti-load side of stator 1 at 36 covering of brake coil
The shaft of 23 end of shaft selects un-conducted magnetic material, it can be achieved that reducing motor material cost.
In addition, the cost of motor can be further decreased when rotary transformer substitution also can be selected in photoelectric encoder 7.
Motor is triphase AC synchronous permanent-magnet motor machine, but in the case where not departing from the art of this patent design, energy
Various change is enough carried out, is applied on other types of AC permanent magnet synchronous motor.
The implementation of the present invention is not limited to this, and above content according to the invention is known using the ordinary skill of this field
Knowledge and customary means, under the premise of not departing from above-mentioned basic fundamental thought of the invention, the present invention can also make other a variety of shapes
Modification, replacement or the change of formula, all fall within rights protection scope of the present invention.
Claims (10)
1. a kind of AC permanent magnet synchronous motor, which includes stator, rotor, end cap, housing and without excitation type power loss system
Dynamic device, it is characterised in that: rotor core is fixedly installed in the shaft of motor, and it is anti-that no excitation type electricity loss brake is located at stator
Between load side and rear end cap, and at least part is overlapped radially with stator winding；Stator is set to rotor outer periphery, stator
Periphery, rotor side and shaft periphery form accommodation space, and accommodation space can accommodate the coincidence part of no excitation type electricity loss brake
Point, stator winding overhangs minimum diameter and without there are gaps between excitation type electricity loss brake maximum outside diameter.
2. AC permanent magnet synchronous motor according to claim 1, which is characterized in that the no excitation type electricity loss brake
Intersection be bottom plate, brake rotor, brake rotor hub and armature plate.
3. AC permanent magnet synchronous motor according to claim 2, which is characterized in that stator includes casing, stator core
And stator winding, stator core and casing are interference fitted, stator winding protrudes outward extended relative to stator core.
4. AC permanent magnet synchronous motor according to claim 3, which is characterized in that rotor includes rotor core, shaft
And permanent magnet, rotor core and shaft are interference fitted.
5. AC permanent magnet synchronous motor according to claim 4, which is characterized in that the permanent magnet includes multiple permanent magnetism
Body composition, and rotor core exterior surface is uniformly alternately disposed in a manner of the pole N, the pole S, the maximum outside diameter and stator iron of rotor
There are gaps between in-core diameter.
6. AC permanent magnet synchronous motor according to claim 5, which is characterized in that the no excitation type electricity loss brake
Brake further includes coil and brake stator, and brake coil and brake stator are located on the outside of stator core.
7. AC permanent magnet synchronous motor according to claim 6, which is characterized in that the motor further includes that photoelectricity is compiled
Code device, the encoder are located at the roller end of the anti-load side of the stator, and outside is sealed by encoder housing, to rotor
It is detected rotation position.
8. AC permanent magnet synchronous motor according to claim 7, which is characterized in that be provided with brake peace on rear end cap
Positioning spigot is filled, the shape that the inner ring of brake and end face are positioned with the seam allowance matches.
9. AC permanent magnet synchronous motor according to claim 8, which is characterized in that rear end cap design has reinforcing rib, institute
It states reinforcing rib and brake and photoelectric encoder is separated into pre-determined distance.
10. the manufacturing method of AC permanent magnet synchronous motor described in a kind of pair of claim 8 or 9, which is characterized in that first will
The inner ring of brake and end face are placed in the seam allowance positioning of end cap, and then brake is fastened on rear end cap with screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811195887.9A CN109194079A (en) | 2018-10-15 | 2018-10-15 | A kind of AC permanent magnet synchronous motor and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811195887.9A CN109194079A (en) | 2018-10-15 | 2018-10-15 | A kind of AC permanent magnet synchronous motor and its manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109194079A true CN109194079A (en) | 2019-01-11 |
Family
ID=64944509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811195887.9A Withdrawn CN109194079A (en) | 2018-10-15 | 2018-10-15 | A kind of AC permanent magnet synchronous motor and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109194079A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110474477A (en) * | 2019-08-20 | 2019-11-19 | 南京埃斯顿自动化股份有限公司 | A kind of permanent magnet brake and permanent magnet braking motor for magneto |
| CN115765310A (en) * | 2022-12-07 | 2023-03-07 | 深圳三火实业发展有限公司 | Stepping servo motor with power-off braking function |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2422773Y (en) * | 2000-03-30 | 2001-03-07 | 上海通太电机有限公司 | Frequency converter speed control braking three-phase asynchronous motor |
| JP2007143255A (en) * | 2005-11-16 | 2007-06-07 | Yaskawa Electric Corp | Smooth core armature winding motor and motor with brake |
| US20090127950A1 (en) * | 2007-11-19 | 2009-05-21 | Siemens Aktiengesellschaft | Electrical machine with magnetic brake directly on the rotor |
| CN106233587A (en) * | 2014-05-27 | 2016-12-14 | 株式会社安川电机 | Electric rotating machine |
| CN106464103A (en) * | 2014-07-28 | 2017-02-22 | 索尤若驱动有限及两合公司 | Electric motor comprising a stator and a rotor, and method for producing an electric motor-driven machine |
| CN209016907U (en) * | 2018-10-15 | 2019-06-21 | 广州数控设备有限公司 | A kind of AC permanent magnet synchronous motor |
-
2018
- 2018-10-15 CN CN201811195887.9A patent/CN109194079A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2422773Y (en) * | 2000-03-30 | 2001-03-07 | 上海通太电机有限公司 | Frequency converter speed control braking three-phase asynchronous motor |
| JP2007143255A (en) * | 2005-11-16 | 2007-06-07 | Yaskawa Electric Corp | Smooth core armature winding motor and motor with brake |
| US20090127950A1 (en) * | 2007-11-19 | 2009-05-21 | Siemens Aktiengesellschaft | Electrical machine with magnetic brake directly on the rotor |
| CN106233587A (en) * | 2014-05-27 | 2016-12-14 | 株式会社安川电机 | Electric rotating machine |
| CN106464103A (en) * | 2014-07-28 | 2017-02-22 | 索尤若驱动有限及两合公司 | Electric motor comprising a stator and a rotor, and method for producing an electric motor-driven machine |
| CN209016907U (en) * | 2018-10-15 | 2019-06-21 | 广州数控设备有限公司 | A kind of AC permanent magnet synchronous motor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110474477A (en) * | 2019-08-20 | 2019-11-19 | 南京埃斯顿自动化股份有限公司 | A kind of permanent magnet brake and permanent magnet braking motor for magneto |
| CN110474477B (en) * | 2019-08-20 | 2024-10-25 | 南京埃斯顿自动化股份有限公司 | Permanent magnet brake for permanent magnet motor and permanent magnet brake motor |
| CN115765310A (en) * | 2022-12-07 | 2023-03-07 | 深圳三火实业发展有限公司 | Stepping servo motor with power-off braking function |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190111 |
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| WW01 | Invention patent application withdrawn after publication |