CN107834779B - Servo motor - Google Patents

Servo motor Download PDF

Info

Publication number
CN107834779B
CN107834779B CN201711273546.4A CN201711273546A CN107834779B CN 107834779 B CN107834779 B CN 107834779B CN 201711273546 A CN201711273546 A CN 201711273546A CN 107834779 B CN107834779 B CN 107834779B
Authority
CN
China
Prior art keywords
rotor
brake
encoder
fixed
stator
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.)
Active
Application number
CN201711273546.4A
Other languages
Chinese (zh)
Other versions
CN107834779A (en
Inventor
朱智平
葛建良
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.)
Zhejiang Linix Motor Co Ltd
Original Assignee
Zhejiang Linix Motor 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 Zhejiang Linix Motor Co Ltd filed Critical Zhejiang Linix Motor Co Ltd
Priority to CN201711273546.4A priority Critical patent/CN107834779B/en
Priority to NZ740769A priority patent/NZ740769A/en
Publication of CN107834779A publication Critical patent/CN107834779A/en
Priority to DE102018107649.5A priority patent/DE102018107649A1/en
Application granted granted Critical
Publication of CN107834779B publication Critical patent/CN107834779B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • 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
    • H02K11/225—Detecting coils
    • 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

Landscapes

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

Abstract

The invention aims to provide a servo motor which is convenient to install and detach, has more stable axial relative positions of an encoder and a brake and has more compact structure. The utility model provides a servo motor, includes the rotor shaft, the one end of rotor shaft passes the end cover in order to extend to the motor outside, the motor outside is fixed with brake subassembly and encoder subassembly, and the brake rotor cover is established and is fixed on the rotor shaft, the brake rotor comprises brake rotor one section and brake rotor two-section, brake stator cover is established outside brake rotor one section and is fixed with the end cover, brake rotor two-section outer fringe is located the outside of brake rotor one section outer fringe, the encoder rotor cover is established on the rotor shaft, brake rotor is located between encoder rotor and the end cover, be equipped with the axle sleeve between encoder rotor and the brake rotor two-section, the axial side of rotor shaft is equipped with the gasket, the gasket is fixed through first fastener and rotor shaft, so that gasket offsets with encoder rotor axial terminal surface.

Description

Servo motor
Technical Field
The present invention relates to a servo motor.
Background
The servo motor is provided with a rotary encoder, the existing encoder and a rotor shaft have relative axial movement, the usability of the encoder is poor, and the fixed structure of the encoder and the motor is very complex, so that the whole motor is large in size.
Disclosure of Invention
The invention aims to provide a servo motor which is convenient to install and detach, has more stable axial relative positions of an encoder and a brake and has more compact structure.
In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a servo motor, includes the rotor shaft, the one end of rotor shaft passes the end cover in order to extend to the motor outside, the motor outside is fixed with brake subassembly and encoder subassembly, brake subassembly includes brake stator and brake rotor, the brake rotor cover is established and is fixed on the rotor shaft, the brake rotor comprises brake rotor one section and brake rotor two-section, brake stator cover is established outside brake rotor one section and is fixed with the end cover, brake rotor two-section outer fringe is located brake rotor one section outer fringe outside, the encoder subassembly includes the encoder rotor, the encoder rotor cover is established on the rotor shaft, brake rotor is located between encoder rotor and the end cover, be equipped with the axle sleeve between encoder rotor and the brake rotor two-section, the axle sleeve is established on the rotor shaft, the axial side of rotor shaft is equipped with the gasket, the gasket is fixed with the rotor shaft through first fastener, and make the gasket and rotor shaft are fixed, so that the gasket and encoder rotor axial terminal surface offset, and make the axle sleeve be restricted between brake rotor and encoder rotor, make between the encoder rotor and the axle sleeve is restricted between the encoder rotor.
When the encoder is installed, the shaft sleeve is sleeved on the rotor shaft, the encoder rotor is pressed on the shaft sleeve through the fixation of the gasket and the rotor shaft, and the shaft sleeve is pressed on the brake rotor, so that the axial fixation of the encoder rotor is realized, and the axial position of the encoder rotor is prevented from changing. The motor of the invention has compact structure, can fix the brake rotor simultaneously when fixing the encoder rotor, the encoder assembly and the brake assembly of the motor are convenient to install, fix and detach.
Preferably, the end cover is formed with a ring-shaped side plate, one end of the side plate, which is far away from the end cover, is fixed with a fixed plate, the fixed plate is fixedly provided with an encoder stator, the fixed plate is formed with a through hole for the shaft sleeve to pass through, and the brake stator is positioned on the inner side of the side plate. The above arrangement is used for the fixation of the encoder stator.
Preferably, the end cover is provided with a bearing chamber for accommodating a bearing, an inner ring of the bearing is fixed with the rotor shaft, an outer ring of the bearing is fixed with the inner wall of the bearing chamber, and one section of axial surface of the brake rotor abuts against the inner ring of the bearing under the action of the first fastener and the gasket. The motor equipment is more convenient by pressing the brake rotor to lock the bearing inner ring. The brake rotor adopts the end face of the bearing as the reference surface, so that the size of a brake air gap can be effectively ensured, and the installation firmness is better.
Preferably, the thickness of the bearing is larger than the depth of the bearing chamber, one side axial end face of the bearing extends to the outer side of the end cover, the brake stator is fixed with the end cover through a plurality of second fasteners, the inner edge of the brake stator is contacted with the outer ring of the bearing, and a gap is formed between the brake stator and the axial end face of the end cover. The motor equipment is more convenient by pressing the brake stator to lock the bearing outer ring.
Preferably, a gap of 2mm is formed between the brake stator and the axial end face of the end cover.
Preferably, the end cover is formed with an annular positioning protrusion, and the inner edge shape of the positioning protrusion is the same as the outer edge shape of the brake stator. The positioning and fixing of the brake stator are facilitated.
Preferably, the fixing plate is formed with a positioning groove having the same shape as the circumferential inner wall and the circumferential outer edge of the encoder stator, and the encoder stator is fixed to the fixing plate such that the encoder stator part is located in the positioning groove.
Preferably, the spacer is fixed to the rotor shaft such that a gap is formed between the spacer and an axial end surface of the rotor shaft.
The invention has the advantages that the encoder and the brake are convenient to mount and dismount, the relative axial positions of the encoder and the brake are more stable, and the structure is more compact.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The invention is further described below with reference to the drawings and specific embodiments.
As shown in fig. 1, the servo motor of the invention comprises a rotor shaft 1, one end of the rotor shaft 1 passes through an end cover 2 to extend to the outer side of the motor, a brake assembly and an encoder assembly are fixed on the outer side of the motor, the brake assembly comprises a brake stator 3 and a brake rotor 4, the brake rotor 4 is sleeved and fixed on the rotor shaft 1 through a key 11, the brake rotor 4 consists of a brake rotor section 41 and a brake rotor section 42, the brake stator 3 is sleeved and arranged on the outer side of the circumference of the brake rotor section 41 and is fixed with the end cover 2, and the outer edge of the brake rotor section 42 is positioned on the outer edge of the brake rotor section 41. The encoder assembly comprises an encoder rotor 5 and an encoder stator 6, wherein the encoder rotor 5 is sleeved on the rotor shaft 1, the brake rotor 4 is positioned between the encoder rotor 5 and the end cover 2, a shaft sleeve 7 is arranged between the encoder rotor 6 and the brake rotor two-section 42, the shaft sleeve 7 is sleeved on the rotor shaft 1, a gasket 8 is arranged on the axial side of the rotor shaft 1, the gasket 8 is fixed with the rotor shaft 1 through a first fastener 12, the gasket 8 is fixed with the rotor shaft 1, the gasket 8 is propped against the axial end face of the encoder rotor 5, the shaft sleeve 7 is limited between the brake rotor 4 and the encoder rotor 6, and the encoder rotor 6 is limited between the shaft sleeve 7 and the gasket 8. Air gaps are formed between the second section 42 of the brake rotor and the axial surface of the brake stator 3, and between the first section 41 of the brake rotor and the circumferential inner end surface of the brake stator 3, and the gasket 8 is fixed with the rotor shaft 1 so that a gap is formed between the gasket 8 and the axial end surface of the rotor shaft 1.
The end cover 2 is formed with a side plate 21 in a ring shape, one end of the side plate 21 far away from the end cover is fixed with a fixing plate 22, the encoder stator 6 is fixed on the fixing plate 22, the fixing plate 22 is formed with a through hole for the shaft sleeve 7 to pass through, and the brake stator 3 is positioned on the inner side of the side plate 21. The end cover 2 is provided with a bearing chamber for accommodating the bearing 9, the inner ring of the bearing 9 is fixed with the rotor shaft 1, the outer ring of the bearing 9 is fixed with the inner wall of the bearing chamber, and the axial surface of a section 41 of the brake rotor 4 of the brake rotor abuts against the axial end surface of the inner ring of the bearing 9 under the action of the first fastener 12 and the gasket 8. The thickness of the bearing 9 is greater than the depth of the bearing chamber, one side axial end face of the bearing 9 extends to the outer side of the end cover 2, the brake stator 3 is fixed with the end cover 2 through a plurality of second fasteners 13, the inner edge of the brake stator 3 is contacted with the outer ring of the bearing 9, and a gap of 2mm is formed between the brake stator 3 and the axial end face of the end cover 2.
The end cover 2 is formed with a positioning protrusion 23 in a ring shape, and the shape of the inner edge of the positioning protrusion 23 is the same as the shape of the outer edge of the brake stator 3. The fixing plate 22 is formed with a positioning groove, the shape of the circumferential inner wall of the positioning groove 22 is the same as the shape of the circumferential outer edge of the encoder stator 6, and the encoder stator 6 is fixed to the fixing plate 22 so that the encoder stator part is located in the positioning groove.
When the encoder is installed, the shaft sleeve is sleeved on the rotor shaft, the encoder rotor is pressed on the shaft sleeve through the fixation of the gasket and the rotor shaft, and the shaft sleeve is pressed on the brake rotor, so that the axial fixation of the encoder rotor is realized, and the axial position of the encoder rotor is prevented from changing. The motor of the invention has compact structure, can fix the brake rotor simultaneously when fixing the encoder rotor, the encoder assembly and the brake assembly of the motor are convenient to install, fix and detach. The brake of the invention adopts the end face of the bearing as the reference surface, thereby effectively ensuring the size of the brake air gap and having better brake installation firmness.

Claims (5)

1. The servo motor is characterized by comprising a rotor shaft, one end of the rotor shaft penetrates through an end cover to extend to the outer side of the motor, a brake assembly and an encoder assembly are fixed on the outer side of the motor, the brake assembly comprises a brake stator and a brake rotor, the brake rotor is sleeved and fixed on the rotor shaft, the brake rotor consists of a first brake rotor section and a second brake rotor section, the brake stator is sleeved and fixed outside the first brake rotor section and is positioned outside the outer edge of the first brake rotor section, the encoder assembly comprises an encoder rotor, the encoder rotor is sleeved and arranged on the rotor shaft, the brake rotor is positioned between the encoder rotor and the end cover, a shaft sleeve is arranged between the encoder rotor and the second brake rotor section, the shaft sleeve is sleeved and arranged on the rotor shaft, a gasket is arranged on the axial side of the rotor shaft, the gasket is fixed with the rotor shaft through a first fastener, the gasket is abutted against the axial end face of the encoder rotor, and the shaft sleeve is limited between the brake rotor and the encoder rotor, and the encoder rotor is limited between the shaft sleeve and the encoder;
the end cover is provided with an annular side plate, one end of the side plate, which is far away from the end cover, is fixed with a fixed plate, the fixed plate is fixedly provided with an encoder stator, the fixed plate is provided with a through hole for a shaft sleeve to pass through, and the brake stator is positioned at the inner side of the side plate;
The end cover is provided with a bearing chamber for accommodating a bearing, an inner ring of the bearing is fixed with the rotor shaft, an outer ring of the bearing is fixed with the inner wall of the bearing chamber, and one section of axial surface of a brake rotor of the brake rotor abuts against the inner ring of the bearing under the action of the first fastener and the gasket;
the thickness of the bearing is greater than the depth of the bearing chamber, one side axial end face of the bearing extends to the outer side of the end cover, the brake stator is fixed with the end cover through a plurality of second fasteners, the inner edge of the brake stator is contacted with the outer ring of the bearing, and a gap is formed between the brake stator and the axial end face of the end cover.
2. The servo motor of claim 1 wherein a gap of 2mm is formed between the brake stator and the axial end face of the end cap.
3. The servo motor of claim 1, wherein the end cap is formed with a positioning protrusion having a ring shape, and an inner edge of the positioning protrusion has the same shape as an outer edge of the brake stator.
4. The servo motor of claim 1 wherein the fixed plate is formed with a positioning groove having a circumferential inner wall shape identical to a circumferential outer edge shape of the encoder stator, the encoder stator being fixed to the fixed plate such that the encoder stator portion is located within the positioning groove.
5. A servo motor as recited in claim 1, wherein said spacer is secured to the rotor shaft such that a gap is formed between the spacer and an axial end face of the rotor shaft.
CN201711273546.4A 2017-12-06 2017-12-06 Servo motor Active CN107834779B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201711273546.4A CN107834779B (en) 2017-12-06 2017-12-06 Servo motor
NZ740769A NZ740769A (en) 2017-12-06 2018-03-15 Servo motor
DE102018107649.5A DE102018107649A1 (en) 2017-12-06 2018-03-29 servomotor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711273546.4A CN107834779B (en) 2017-12-06 2017-12-06 Servo motor

Publications (2)

Publication Number Publication Date
CN107834779A CN107834779A (en) 2018-03-23
CN107834779B true CN107834779B (en) 2024-09-10

Family

ID=61641909

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711273546.4A Active CN107834779B (en) 2017-12-06 2017-12-06 Servo motor

Country Status (3)

Country Link
CN (1) CN107834779B (en)
DE (1) DE102018107649A1 (en)
NZ (1) NZ740769A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112757280A (en) * 2020-12-28 2021-05-07 深圳市优必选科技股份有限公司 Steering wheel module and robot
CN114499099B (en) * 2022-01-19 2024-04-26 北京大豪工缝智控科技有限公司 Stepping motor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207442651U (en) * 2017-12-06 2018-06-01 浙江联宜电机有限公司 Servomotor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6042302B2 (en) * 2012-12-07 2016-12-14 日本電産テクノモータ株式会社 motor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207442651U (en) * 2017-12-06 2018-06-01 浙江联宜电机有限公司 Servomotor

Also Published As

Publication number Publication date
NZ740769A (en) 2018-10-26
DE102018107649A1 (en) 2019-06-06
CN107834779A (en) 2018-03-23

Similar Documents

Publication Publication Date Title
CN107834779B (en) Servo motor
CA2792914A1 (en) Split seal assembly and method
CN105186763B (en) A kind of motor bearing structure
CN202531481U (en) Mechanical seal device for pipeline pump
CN212726676U (en) Electric machine
CN209414405U (en) A kind of structure preventing rotor axial play
CN202183669U (en) Installation structure of end cover of motor
CN110829696A (en) Brushless motor
CN107819381B (en) Electromagnetic brake mounting structure
CN203708043U (en) Motor end cover and bearing assembling structure
CN211127416U (en) Brushless motor
CN211039682U (en) Mechanical seal for integral pump
CN104675853A (en) Driving axle wheel hub bearing unit
CN111022316A (en) Mechanical sealing device for rotor pump
CN211715317U (en) Mechanical sealing device for rotor pump
CN207442627U (en) Electromagnetic brake mounting structure
CN207442651U (en) Servomotor
CN202309309U (en) Motor end cover assembling structure
CN202150775U (en) Installing structure of rotary motor electrical carbon fixing rack
CN103492771B (en) Mechanical seal
CN210867369U (en) Electric machine
CN209896785U (en) Magnetic ring and motor using same
CN104407164A (en) Dustproof and waterproof velometer
CN217642980U (en) Motor rotor shafting convenient to assembly
CN215498636U (en) Magnetic encoder mounting structure and motor thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant