CN215528790U - Permanent magnet brake device for servo motor - Google Patents
Permanent magnet brake device for servo motor Download PDFInfo
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- CN215528790U CN215528790U CN202120782557.0U CN202120782557U CN215528790U CN 215528790 U CN215528790 U CN 215528790U CN 202120782557 U CN202120782557 U CN 202120782557U CN 215528790 U CN215528790 U CN 215528790U
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- servo motor
- permanent magnet
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- magnet brake
- rotor
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Abstract
The utility model discloses a permanent magnet braking device for a servo motor, which comprises a servo motor shell, a rotor and an electromagnetic source, wherein a first bearing and a second bearing are arranged on the servo motor shell, a permanent magnet braking mechanism is sleeved on the rotor and comprises a shaft sleeve linked with the rotor and a fixedly arranged annular permanent magnet brake, the shaft sleeve comprises a shaft sleeve annular rib and a pipe sleeve body penetrating through the annular permanent magnet brake and matched with the first bearing or the second bearing, an electric driving annular plate is arranged on the shaft sleeve annular rib, an annular reed is arranged between the electric driving annular plate and the shaft sleeve annular rib, and a gap is reserved between the electric driving annular plate and the annular permanent magnet brake. The servo motor can greatly reduce the axial size of the servo motor, meets the requirement of thin design, has the characteristics of high torque, low power consumption, high response, no noise and the like, and greatly prolongs the effective service life. Easy carrying, high efficiency of assembly and operation and convenient maintenance and repair operation. The compact joint axis position of the mechanical arm is particularly suitable for the compact joint axis position of the mechanical arm.
Description
Technical Field
The utility model relates to a permanent magnet braking device for a servo motor, and belongs to the technical field of servo motor braking.
Background
In recent years, the servo motor field is being developed to be small, thin, light and high in torque, and particularly in the industrial robot field, it is necessary to have high flexibility, small size and high torque in order to be able to meet the work required for high precision.
Adopt spring brake among the traditional servo motor, spring brake is bulky, requires that the axial stroke is higher to braking torque is difficult to control, servo motor's rotor need with hinder and stop the structure and cooperate, generally need design peripheral muscle groove isotructure, have wearing and tearing and noise phenomenon, in addition, spring brake assembles complicacy in servo motor traditionally, has increased the assembly cost, and maintenance operation are very loaded down with trivial details.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects of the prior art, and provides a permanent magnet braking device for a servo motor, aiming at the problem that the traditional spring brake greatly influences the overall volume and the control performance of a servo motor device.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
the permanent magnet braking device for the servo motor comprises a servo motor shell, a rotor arranged in the servo motor shell and an electromagnetic source used for driving the rotor to rotate, wherein a first bearing and a second bearing used for movably connecting two ends of the rotor are arranged on the servo motor shell,
a permanent magnet brake mechanism positioned between the electromagnetic source and the first bearing or positioned between the electromagnetic source and the second bearing is sleeved on the rotor,
permanent magnetism arrestment mechanism include with the axle sleeve that the rotor linked mutually and fixed the setting are in cyclic annular permanent magnetism stopper on the servo motor casing, the axle sleeve includes the axle sleeve ring muscle and runs through the pipe box body that cyclic annular permanent magnetism stopper and first bearing or second bearing connect mutually, be equipped with the orientation on the axle sleeve ring muscle the electricity of cyclic annular permanent magnetism stopper drives the crown plate, electricity drive the crown plate with be equipped with cyclic annular reed between the axle sleeve ring muscle, electricity drive the crown plate with leave the clearance between the cyclic annular permanent magnetism stopper.
Preferably, cyclic annular permanent magnet brake includes the stator yoke, sets up coil in the stator yoke, with coil matched with magnetic pole, be located the magnetic pole with permanent magnet subassembly between the stator yoke, the magnetic pole possesses the cross-under and is in the magnetic pole body in the coil and be used for with the stator yoke centre gripping is fixed the magnetic pole outer fringe wall of permanent magnet subassembly, the open end of stator yoke be equipped with be used for with the open rim of electricity driving ring plate matched with.
Preferably, the permanent magnet assembly comprises a magnet carrying ring, a plurality of carrying grooves which are uniformly distributed in the circumferential direction are formed in the magnet carrying ring, and a disc-shaped permanent magnet is arranged in any of the carrying grooves.
Preferably, the open edge is provided with a detachable friction ring piece.
Preferably, a matching flange plate used for carrying the second bearing is arranged on the shell of the servo motor, the annular permanent magnet brake is arranged on the matching flange plate in a limiting mode, and the second bearing is arranged between the pipe sleeve body and the matching flange plate in a limiting mode.
Preferably, one side of the servo motor shell, which is located on the adapting flange plate, is provided with a detachable power distribution cabin, and a controller which is used for electrically matching with the electromagnetic source and the annular permanent magnet brake is arranged in the power distribution cabin.
Preferably, a cooling fan is arranged in the power distribution cabin.
Preferably, the adapting flange plate is provided with an encoder positioned in the power distribution cabin, and the encoder is adapted to the rotor.
Preferably, a protective cover body for protecting the encoder is arranged on the adapting flange plate.
The utility model has the following beneficial effects:
1. the axial dimension of the servo motor can be greatly reduced, the thin design requirement is met, the servo motor has the characteristics of high torque, low power consumption, high response, no noise and the like, and meanwhile, the effective service life is greatly prolonged.
2. Easy carrying, high efficiency of assembly and operation and convenient maintenance and repair operation.
3. The compact joint axis position of the mechanical arm is particularly suitable for the compact joint axis position of the mechanical arm.
Drawings
Fig. 1 is an exploded view of a permanent magnet brake mechanism in a permanent magnet brake device for a servo motor according to the present invention.
Fig. 2 is a schematic structural diagram of a permanent magnet braking device for a servo motor according to an embodiment of the present invention.
Detailed Description
The utility model provides a permanent magnet brake device for a servo motor. The technical solution of the present invention is described in detail below with reference to the accompanying drawings so that it can be more easily understood and appreciated.
As shown in fig. 1 and 2, the permanent magnet braking device for the servo motor includes a servo motor housing 1, a rotor 2 disposed in the servo motor housing 1, and an electromagnetic source 3 for driving the rotor 2 to rotate, wherein the servo motor housing 1 is provided with a first bearing 4 and a second bearing 5 for movably connecting two ends of the rotor 2, and one shaft end of the rotor is provided with an encoder 6. The traditional braking adopts a spring brake to be matched with the rotor 2, so that the requirement on axial space is high, the matching and assembling are complex, the maintenance and the repair are difficult, and the braking performance is poor.
In the scheme, a permanent magnet brake mechanism 7 located between the electromagnetic source 3 and the first bearing 4 or between the electromagnetic source 3 and the second bearing is sleeved on the rotor 2.
The permanent magnet braking mechanism 7 comprises a shaft sleeve 8 and an annular permanent magnet brake 9, the shaft sleeve 8 is linked with the rotor, the annular permanent magnet brake 9 is fixedly arranged on the shell of the servo motor, the shaft sleeve 8 comprises a shaft sleeve annular rib and a pipe sleeve body, the pipe sleeve body penetrates through the annular permanent magnet brake and is matched and connected with the first bearing or the second bearing, an electric driving annular plate 81 facing the annular permanent magnet brake is arranged on the shaft sleeve annular rib, an annular reed 82 is arranged between the electric driving annular plate 81 and the shaft sleeve annular rib, and a gap is reserved between the electric driving annular plate and the annular permanent magnet brake.
The specific implementation process and principle description are as follows:
adopt permanent magnetism arrestment mechanism 7 to replace traditional ground spring brake, it only need the cyclic annular permanent magnetism stopper 9 that the axial distance stroke is shorter carry on can, and the cooperation of axle sleeve 8 has been designed, the pipe box body of axle sleeve 8 passes this permanent magnetism arrestment mechanism 7 and realizes the space cooperation, only need provide the axle sleeve ring muscle, electricity drive crown plate 81, the less axial space of cyclic annular reed 82 can satisfy and carry on the demand, magnetic adsorption or release through permanent magnetism arrestment mechanism 7, cyclic annular reed 82 produces very little beat stroke, satisfy the contact braking and the release between electricity drive crown plate 81 and the cyclic annular permanent magnetism stopper 9, the braking can be superior, servo motor's axial dimension has been reduced, traditional braking noise has been eliminated simultaneously.
In one embodiment, the annular permanent magnet brake 9 includes a stator yoke 91, a coil 92 disposed in the stator yoke 91, a magnetic pole 93 engaged with the coil 92, and a permanent magnet assembly 94 disposed between the magnetic pole 93 and the stator yoke 91, wherein the magnetic pole 93 has a magnetic pole body penetrating in the coil and a magnetic pole outer edge wall for clamping and fixing the permanent magnet assembly with the stator yoke, and an open end of the stator yoke 91 is provided with an open edge for engaging with the electrically driven annular plate 81.
Specifically, as shown in fig. 1, the stator yoke 91 with a cavity is adopted to carry the coil 92, the magnetic pole 93 and the permanent magnet assembly 94, the structure is very compact, the open edge of the stator yoke 91 is utilized to realize the braking fit with the electrically driving ring plate 81, and the structure is simple and ingenious.
In one embodiment, the permanent magnet assembly 94 includes a magnet ring 941, a plurality of circumferentially and uniformly distributed slots are formed on the magnet ring 941, and a disc-shaped permanent magnet 942 is disposed in any slot.
So design satisfies the stable demand of electromagnetism absorption, carries on more convenient and stable simultaneously.
In a specific embodiment, the detachable friction ring piece is arranged on the edge of the opening, so that the wear-resisting requirement of contact braking is met, and meanwhile, the replacement and maintenance are convenient.
In one embodiment, the servo motor housing 1 is provided with a matching flange 10 for carrying the second bearing 5, the annular permanent magnet brake is limited on the matching flange 10, and the second bearing is limited between the pipe sleeve body and the matching flange.
The integral assembly is facilitated through the matching flange plate 10, the matching requirements of the servo motor rotor and the permanent magnet brake mechanism 7 are met, the assembling and disassembling operation is convenient and efficient, and the maintenance is easy.
In one embodiment, a detachable power distribution compartment 11 is disposed on one side of the servo motor housing 1 located at the mating flange, and a controller 12 for electrically cooperating with the electromagnetic source 3 and the annular permanent magnet brake is disposed in the power distribution compartment 11.
The carrying requirement of the controller 12 is satisfied through the power distribution cabin 11, the communication and power supply requirements of the electromagnetic source 3 and the annular permanent magnet brake are realized, and the power distribution cabin 11 belongs to the conventional technology of servo motors, and is not described in detail herein.
It should be noted that the encoder 6 is typically disposed within the distribution compartment in cooperation with the rotor, and is also in electrical cooperation with the controller 12.
In one embodiment, a cooling fan 13 is disposed within the power distribution compartment 11. The adapter flange is provided with a protective cover 14 for protecting the encoder. The temperature control of the power distribution cabin can be achieved through the cooling fan 13, and the heat dissipation requirement is met.
Through the description, the permanent magnet braking device for the servo motor can greatly reduce the axial size of the servo motor, meets the requirement of thin design, has the characteristics of high torque, low power consumption, high response, no noise and the like, and greatly prolongs the effective service life. Easy carrying, high efficiency of assembly and operation and convenient maintenance and repair operation. The compact joint axis position of the mechanical arm is particularly suitable for the compact joint axis position of the mechanical arm.
The technical solutions of the present invention are fully described above, it should be noted that the specific embodiments of the present invention are not limited by the above description, and all technical solutions formed by equivalent or equivalent changes in structure, method, or function according to the spirit of the present invention by those skilled in the art are within the scope of the present invention.
Claims (9)
1. A permanent magnetism arresting gear for servo motor, servo motor includes servo motor casing, sets up rotor in the servo motor casing, be used for driving the rotatory electromagnetic source of rotor, be equipped with on the servo motor casing be used for right the rotor carries out the first bearing and the second bearing that both ends activity connects, its characterized in that:
a permanent magnet brake mechanism positioned between the electromagnetic source and the first bearing or positioned between the electromagnetic source and the second bearing is sleeved on the rotor,
permanent magnetism arrestment mechanism include with the axle sleeve that the rotor linked mutually and fixed the setting are in cyclic annular permanent magnetism stopper on the servo motor casing, the axle sleeve includes the axle sleeve ring muscle and runs through the pipe box body that cyclic annular permanent magnetism stopper and first bearing or second bearing connect mutually, be equipped with the orientation on the axle sleeve ring muscle the electricity of cyclic annular permanent magnetism stopper drives the crown plate, electricity drive the crown plate with be equipped with cyclic annular reed between the axle sleeve ring muscle, electricity drive the crown plate with leave the clearance between the cyclic annular permanent magnetism stopper.
2. The permanent magnet brake device for a servo motor according to claim 1, wherein:
annular permanent magnet brake includes the stator yoke, sets up coil in the stator yoke, with coil matched with magnetic pole, be located the magnetic pole with permanent magnet subassembly between the stator yoke, the magnetic pole possesses the cross-under and is in magnetic pole body in the coil and be used for with the stator yoke centre gripping is fixed permanent magnet subassembly's magnetic pole outer fringe wall, the open end of stator yoke be equipped with be used for with the open border of electricity driving crown plate matched with.
3. The permanent magnet brake device for a servo motor according to claim 2, wherein:
the permanent magnet assembly comprises a magnet carrying ring, a plurality of carrying grooves which are circumferentially and uniformly distributed are formed in the magnet carrying ring, and a disc-shaped permanent magnet is arranged in each carrying groove.
4. The permanent magnet brake device for a servo motor according to claim 2, wherein:
the open edge is provided with a detachable friction ring sheet.
5. The permanent magnet brake device for a servo motor according to claim 1, wherein:
the servo motor shell is provided with a matching flange plate used for carrying the second bearing, the annular permanent magnet brake is arranged on the matching flange plate in a limiting mode, and the second bearing is arranged between the pipe sleeve body and the matching flange plate in a limiting mode.
6. The permanent magnet brake device for a servo motor according to claim 5, wherein:
the servo motor shell is located one side of the matching flange plate is provided with a detachable power distribution cabin, and the power distribution cabin is internally provided with a controller which is used for electrically matching with the electromagnetic source and the annular permanent magnet brake.
7. The permanent magnet brake device for a servo motor according to claim 6, wherein:
and a cooling fan is arranged in the power distribution cabin.
8. The permanent magnet brake device for a servo motor according to claim 6, wherein:
and the matching flange plate is provided with an encoder positioned in the power distribution cabin, and the encoder is matched and connected with the rotor.
9. The permanent magnet brake device for a servo motor according to claim 8, wherein:
the adapter flange plate is provided with a protective cover body for protecting the encoder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120782557.0U CN215528790U (en) | 2021-04-16 | 2021-04-16 | Permanent magnet brake device for servo motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120782557.0U CN215528790U (en) | 2021-04-16 | 2021-04-16 | Permanent magnet brake device for servo motor |
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| Publication Number | Publication Date |
|---|---|
| CN215528790U true CN215528790U (en) | 2022-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120782557.0U Active CN215528790U (en) | 2021-04-16 | 2021-04-16 | Permanent magnet brake device for servo motor |
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| CN (1) | CN215528790U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115849231A (en) * | 2022-12-26 | 2023-03-28 | 兰州理工大学 | Permanent magnet eddy current brake suitable for winch braking and winch braking system |
| EP4265380A1 (en) * | 2022-04-21 | 2023-10-25 | Microsure B.V. | Joint arrangement for a robot arm for providing an energy-efficient braking function |
-
2021
- 2021-04-16 CN CN202120782557.0U patent/CN215528790U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4265380A1 (en) * | 2022-04-21 | 2023-10-25 | Microsure B.V. | Joint arrangement for a robot arm for providing an energy-efficient braking function |
| WO2023202959A1 (en) * | 2022-04-21 | 2023-10-26 | Microsure B.V. | Joint arrangement for a robot arm for providing an energy-efficient braking function |
| CN115849231A (en) * | 2022-12-26 | 2023-03-28 | 兰州理工大学 | Permanent magnet eddy current brake suitable for winch braking and winch braking system |
| CN115849231B (en) * | 2022-12-26 | 2024-05-31 | 兰州理工大学 | Permanent magnet eddy current brake and winch brake system suitable for winch brake |
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