CN111463962A - Servo motor with speed reduction and braking functions - Google Patents

Servo motor with speed reduction and braking functions Download PDF

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Publication number
CN111463962A
CN111463962A CN202010479119.7A CN202010479119A CN111463962A CN 111463962 A CN111463962 A CN 111463962A CN 202010479119 A CN202010479119 A CN 202010479119A CN 111463962 A CN111463962 A CN 111463962A
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CN
China
Prior art keywords
servo motor
motor
input shaft
braking functions
brake
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010479119.7A
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Chinese (zh)
Inventor
邵伟勋
唐勇斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Casicc Intelligent Robot Co ltd
Original Assignee
Casicc Intelligent Robot Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Casicc Intelligent Robot Co ltd filed Critical Casicc Intelligent Robot Co ltd
Priority to CN202010479119.7A priority Critical patent/CN111463962A/en
Publication of CN111463962A publication Critical patent/CN111463962A/en
Pending legal-status Critical Current

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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
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21—Devices for sensing speed or position, or actuated thereby
    • 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
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225—Terminal boxes or connection arrangements
    • 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
    • H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

The utility model provides a servo motor with speed reduction and braking function includes: a motor housing; the stator assembly, the rotor assembly and the input shaft are arranged in the motor shell; further comprising: the hollow shaft is positioned in the motor shell and is fixedly connected with the motor shell; the speed reducer and the brake are both arranged in the hollow shaft; the stator assembly is sleeved outside the hollow shaft; the input shaft is connected with the brake; the first end of the input shaft is in transmission connection with the speed reducer, and the second end of the input shaft is connected with the rotor assembly. The speed reducer and the brake are integrated in the servo motor inside the motor shell, the space inside the servo motor is fully utilized, the speed reducer, the brake and the servo motor are integrated, and the motor shell has the advantages of being small in size, light in weight, compact in structure and the like.

Description

Servo motor with speed reduction and braking functions
Technical Field
The utility model relates to a servo motor field especially relates to a servo motor with speed reduction and braking function.
Background
Because of the characteristics of high positioning precision, stable running speed, strong overload capacity and the like, the servo motor is widely applied to industries such as machine tools, printing equipment, robots, automatic production lines, AGV (automatic guided vehicle), electric forklifts and the like which have higher requirements on working reliability and running stability.
The conventional servo motor needs to be decelerated, braked and the like when working in order to meet the functional and performance requirements required by actual working conditions, and the servo motor, the decelerator and the brake are respectively used as independent bodies to be simply assembled to form an executing mechanism in the conventional scheme.
Disclosure of Invention
In order to solve at least one of the above-mentioned technical problem, this disclosure provides a servo motor with speed reduction and braking function, and concrete implementation:
a servo motor with speed reduction and braking functions comprises: a motor housing; the stator assembly, the rotor assembly and the input shaft are arranged in the motor shell;
further comprising: the hollow shaft is positioned in the motor shell and is fixedly connected with the motor shell; the speed reducer and the brake are both arranged in the hollow shaft; the stator assembly is sleeved outside the hollow shaft;
the input shaft is connected with the brake; the first end of the input shaft is in transmission connection with the speed reducer, and the second end of the input shaft is connected with the rotor assembly.
Further, the input shaft is connected with the spline of the brake in a matching mode through a first key.
Further, one end face, far away from the brake, of the first key is connected with a shaft stop.
Further, the stator assembly is in interference fit with the hollow shaft.
Furthermore, high-speed teeth are arranged in the speed reducer, and the first end of the input shaft is connected with the high-speed teeth.
Further, the second end of the input shaft is fixedly connected with the rotor through a second key.
Further, the rotor assembly comprises a rotor and a permanent magnet arranged on the inner side of the rotor, and the second key is arranged at the shaft center of the rotor.
Further, the rotor is fixedly connected with the second end of the input shaft through a screw.
Further, the motor shell comprises a shell, a front end cover and a rear cover, wherein the front end cover is covered at the front end of the shell, and the rear cover is covered at the rear end of the shell; the hollow shaft and the front end cover are integrally processed and formed.
The encoder comprises a signal excitation module and a signal processing module, and the signal excitation module is mounted at the second end part of the input shaft; the signal processing module is fixed in the middle of the rear end of the motor shell, and the signal excitation module and the signal processing module are located on the same axis.
Furthermore, the spacing distance L between the signal excitation module and the signal processing module is less than or equal to 1 mm.
Furthermore, a wire outlet groove is formed in the inner wall of the motor shell, a wire outlet is formed in the rear end portion of the motor shell, and the outgoing wire of the stator assembly and the outgoing wire of the brake penetrate through the wire outlet groove and extend out of the wire outlet.
Further, the outgoing line of the encoder extends out of the outlet.
Furthermore, a wire protecting rubber ring is sleeved at the wire outlet.
Further, the stator assembly comprises a stator core and a motor winding wound in a stator core slot.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.
FIG. 1 is a schematic structural view of the present disclosure;
FIG. 2 is a schematic view of a stator assembly configuration of the present disclosure;
FIG. 3 is a schematic view of a rotor assembly of the present disclosure;
FIG. 4 is a schematic view of an encoder configuration of the present disclosure;
the motor comprises a speed reducer 1, a front end cover 2, a hollow shaft 3, a stator assembly 4, a rotor assembly 5, a rear cover 6, a machine shell 7, a first key 8, a second key 9, an encoder 10, an input shaft 11, a wire protecting rubber ring 12, a brake 13, a shaft bumper 14, a stator core 15, a motor winding 16, a permanent magnet 17, a rotor 18, a signal excitation module 19 and a signal processing module 20.
Detailed Description
The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 1, a servo motor with deceleration and braking functions includes: a motor housing; the stator assembly 4, the rotor assembly 5 and the input shaft 11 are arranged in the motor shell; the input shaft is a high-speed input shaft. Further comprising: the hollow shaft 3 is positioned in the motor shell and is fixedly connected with the motor shell; the speed reducer 1 and the brake 13 are both arranged in the hollow shaft 3; the retarder 1 and the brake 13 can be fixed inside the hollow shaft 3 by screws.
Referring to fig. 1, in the present embodiment, the reducer 1 and the brake 13 are installed in the hollow shaft 3, so that the reducer 1 and the brake 13 are integrated inside the motor housing of the servo motor, the space inside the servo motor is fully utilized, the length of the servo mechanism is greatly shortened, and redundant parts caused by external connection of the servo motor, the reducer 1 and the brake 13 in the conventional servo mechanism are saved, thereby further reducing the weight and the cost of the servo mechanism, and the structure is more compact.
Referring to fig. 1, in the present embodiment, the stator assembly 4 is sleeved outside the hollow shaft 3; the stator assembly 4 is press-mounted on the outer side of the hollow shaft 3 through interference fit, so that the stator assembly 4 is tightly clamped on the hollow shaft 3 to realize relative fixation.
Referring to fig. 1 and 2, the stator assembly 4 includes a stator core 15 and motor windings 16 wound in slots of the stator core 15. According to the practical application, the alternating current point for energizing the motor winding 16 with a set frequency is selected, and a rotating magnetic field with a corresponding frequency can be generated.
Referring to fig. 1 and 3, the rotor assembly 5 includes a rotor 18, and a permanent magnet 17 disposed inside the rotor 18, and the permanent magnet 17 may be fixed inside the rotor 18 by gluing or the like. The second key 9 is provided at the axial center of the rotor 18. In this embodiment, the permanent magnet 17 may be made of permanent magnet alloy or the like.
Referring to fig. 1, the input shaft 11 is connected to the brake 13; the first end of the input shaft 11 is in transmission connection with the speed reducer 1, and the second end of the input shaft 11 is connected with the rotor assembly 5.
Referring to fig. 1, the input shaft 11 is in spline fit connection with the brake 13 through the first key 8, and the brake 13 is in transmission connection with the input shaft 11 through the meshing connection of the first key 8 and the spline, so that a braking function is realized. In this embodiment, a shaft stop 14 is connected to an end surface of the first key 8 away from the stopper 13 to prevent the first key 8 from sliding axially.
Referring to fig. 1, high-speed teeth are provided in the speed reducer 1, and a first end of the input shaft 11 is connected to the high-speed teeth. The high-speed gear is a gear with higher relative speed in the speed reducer 1. The input shaft 11 uses the effect of the reduction gear 1 to teach and increase torque by connecting high speed gears.
Referring to fig. 1 and 3, in the present embodiment, the second end of the input shaft 11 is fixedly connected to the rotor 18 through the second key 9. The rotor 18 can be tightly connected with the second end of the input shaft 11 through a screw, so that the fixed connection effect is achieved, and the rotor 18 and the input shaft 11 are prevented from generating relative axial displacement when rotating.
Referring to fig. 1, in the present embodiment, the motor housing includes a housing 7, a front end cover 2 covering a front end of the housing 7, and a rear cover 6 covering a rear end of the housing 7; the hollow shaft 3 and the front end cover 2 are integrally formed, so that the brake 13 and the hollow shaft 3 are prevented from shaking and the like during the operation of the speed reducer 1, and the hollow shaft 3 is more stable.
Referring to fig. 1 and 4, the servo motor of the present embodiment further includes an encoder 10, the encoder 10 is located inside the rear cover 6, the encoder 10 includes a signal excitation module 19 and a signal processing module 20, the signal excitation module 19 is mounted at the second end of the input shaft 11, the signal processing module 20 is fixed at a middle portion of the rear end of the motor housing, the signal excitation module 19 and the signal processing module 20 are located on the same axis, and a distance L between the signal excitation module 19 and the signal processing module 20 is not greater than 1mm, so that the received rotation information of the input shaft 11 of the signal excitation module 19 can be timely transmitted to the signal processing module 20, and interference and delay of transmission are reduced.
Referring to fig. 1, in the servo motor of the present disclosure, a wire outlet is formed in an inner wall of the motor housing, referring to fig. 1, in this embodiment, the appearing groove is formed in an inner wall of the motor housing 7, the rear end of the housing is clicked to be the rear cover 6, the wire outlet is formed in the rear cover 6, both the outgoing wire of the stator assembly 4 and the outgoing wire of the brake 13 pass through the wire outlet and extend out of the motor housing from the wire outlet, and the outgoing wire of the encoder 10 extends out of the motor housing from the wire outlet. In order to protect the outgoing line, the outgoing line outlet is sleeved with a line protection rubber ring 12.
Referring to fig. 1 to 4, the servo motor according to the present disclosure operates as follows:
when the servo motor needs a braking function, the brake 13 is opened by supplying 24V dc to the brake 13, and at this time, the high speed shaft of the decelerator 1 can be freely rotated.
When a motor driver of the servo motor drives the servo motor to rotate at a specified rotating speed, the rotor assembly 5 drives the input shaft 11 to rotate, the input shaft 11 is connected with the high-speed teeth of the speed reducer 1, and the required rotating speed and torque are output through the speed reduction effect of the speed reducer 1.
And a signal excitation module 19 fixed at the end part of the input shaft 11 and a signal processing module 20 fixed on the rear cover 6 monitor the rotating speed of the servo motor in real time and feed the position of the rotor 18 back to the motor driver, so that the accurate control of the rotating speed of the servo motor is realized.
When the servo motor is required to stop rotating and keep braking, the motor driver drives the servo motor to reduce the rotating speed to zero, and then the direct current of the brake 13 is disconnected to keep braking.
The speed reducer 1, the brake 13 and the servo motor are integrated through the means, and the servo motor has the advantages of being small in size, light in weight, compact in structure and the like.
In the description of the present specification, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.

Claims (10)

1. A servo motor with speed reduction and braking functions comprises: a motor housing; the stator assembly, the rotor assembly and the input shaft are arranged in the motor shell; it is characterized in that the preparation method is characterized in that,
further comprising: the hollow shaft is positioned in the motor shell and is fixedly connected with the motor shell; the speed reducer and the brake are both arranged in the hollow shaft; the stator assembly is sleeved outside the hollow shaft;
the input shaft is connected with the brake; the first end of the input shaft is in transmission connection with the speed reducer, and the second end of the input shaft is connected with the rotor assembly.
2. The servo motor with deceleration and braking functions as claimed in claim 1, wherein said input shaft is connected with said brake by spline fitting through a first key.
3. The servo motor with deceleration and braking functions as claimed in claim 1, wherein said stator assembly is interference fitted with said hollow shaft.
4. A servo motor with deceleration and braking functions as claimed in claim 1, wherein said decelerator is provided with high speed teeth, and said first end of said input shaft is connected to said high speed teeth.
5. A servo motor with deceleration and braking functions as claimed in claim 1, wherein said second end of said input shaft is fixedly connected to said rotor by means of a second key.
6. The servo motor with deceleration and braking functions as claimed in claim 5, wherein said rotor assembly includes a rotor, and a permanent magnet disposed inside said rotor, said second key being disposed at an axial center of said rotor.
7. The servo motor with speed reducing and braking functions as claimed in claim 1, wherein the motor housing comprises a housing, a front end cover covering the front end of the housing, and a rear cover covering the rear end of the housing; the hollow shaft and the front end cover are integrally processed and formed.
8. The servo motor with the speed reducing and braking functions as claimed in any one of claims 1 to 7, further comprising an encoder, wherein the encoder comprises a signal excitation module and a signal processing module, and the signal excitation module is mounted at the second end part of the input shaft; the signal processing module is fixed in the middle of the rear end of the motor shell, and the signal excitation module and the signal processing module are located on the same axis.
9. The servo motor with deceleration and braking functions as claimed in any one of claims 1 to 7, wherein an outlet slot is formed on an inner wall of the motor housing, an outlet is formed at a rear end portion of the motor housing, and the outgoing line of the stator assembly and the outgoing line of the brake both pass through the outlet slot and protrude from the outlet.
10. A servo motor with deceleration and braking functions as claimed in any of claims 1 to 7, wherein said stator assembly comprises a stator core and motor windings wound in slots of the stator core.
CN202010479119.7A 2020-05-29 2020-05-29 Servo motor with speed reduction and braking functions Pending CN111463962A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010479119.7A CN111463962A (en) 2020-05-29 2020-05-29 Servo motor with speed reduction and braking functions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010479119.7A CN111463962A (en) 2020-05-29 2020-05-29 Servo motor with speed reduction and braking functions

Publications (1)

Publication Number Publication Date
CN111463962A true CN111463962A (en) 2020-07-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010479119.7A Pending CN111463962A (en) 2020-05-29 2020-05-29 Servo motor with speed reduction and braking functions

Country Status (1)

Country Link
CN (1) CN111463962A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112737178A (en) * 2021-01-06 2021-04-30 杭州微光技术有限公司 High-speed rotor and high-speed drive and control integrated servo motor with same
TWI729940B (en) * 2020-09-23 2021-06-01 東元電機股份有限公司 A motor with a braking device
WO2022162585A1 (en) * 2021-01-29 2022-08-04 Genesis Robotics And Motion Technologies, LP Modular electric machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI729940B (en) * 2020-09-23 2021-06-01 東元電機股份有限公司 A motor with a braking device
CN112737178A (en) * 2021-01-06 2021-04-30 杭州微光技术有限公司 High-speed rotor and high-speed drive and control integrated servo motor with same
WO2022162585A1 (en) * 2021-01-29 2022-08-04 Genesis Robotics And Motion Technologies, LP Modular electric machine

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