CN109888938A - A kind of servo motor - Google Patents
A kind of servo motor Download PDFInfo
- Publication number
- CN109888938A CN109888938A CN201910103217.8A CN201910103217A CN109888938A CN 109888938 A CN109888938 A CN 109888938A CN 201910103217 A CN201910103217 A CN 201910103217A CN 109888938 A CN109888938 A CN 109888938A
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- Prior art keywords
- magnet steel
- end portions
- rotor core
- face
- concave edge
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- 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.)
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- 239000003822 epoxy resin Substances 0.000 claims abstract description 5
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 71
- 239000010959 steel Substances 0.000 claims description 71
- 238000000034 method Methods 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 abstract description 2
- 238000004904 shortening Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000004080 punching Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a kind of for shortening the servo motor connection structure of length, including motor stator, insulated end portions, end cap, rear cover, encoder and rotor；The first seam allowance is equipped on the motor stator, insulated end portions are connect by the second seam allowance with motor stator, and the inside of motor stator passes through the fixed insulated end portions of encapsulated epoxy resin；Insulated end portions are set as flange surface on one side, and via hole is equipped on the flange surface, and insulated end portions another side is set as concave edge face, and the first screw hole is equipped on the concave edge face；End cap passes through via hole by the first screw and is connected and fixed with positioned at motor stator；Flange surface and connecting end surface are that the gap to the cambered surface of motor stator protrusion, between two cambered surfaces is 0.5mm；Several second screw holes are equipped in insulated end portions concave edge face, encoder is mounted in the concave edge face of insulated end portions, and the end face of encoder is retracted in concave edge face；The concave edge face of back cover hole and insulated end portions is connected and fixed composition seal cavity, and the encoder is wrapped in interior by seal cavity.
Description
Technical field
The present invention relates to servo motor fields, specifically, being related specifically to a kind of servo motor.
Background technique
Servo motor is the execution level of Industry Control, is the kernel component of intelligence manufacture, and country's servo motor has at present
Many difficult points are not solved.Such as:
1) shape is long, and power density is low, influences to play in the installation application of terminal intelligent equipment and the performance of equipment, especially
It is the application of articulated robot.
2) servo motor switches occasion in some anxious acceleration and deceleration and repeatedly positive and negative rotation, compares the reliability requirement of rotor
Height, existing axis and rotor core are connected by simple interference, and prolonged intensive work will lead to material and creep occurs, are turned
Sub- direction of rotation dislocation is mobile, and there are certain probability.According to key connection axis and rotor core, rotor can be greatly increased
Manufacturing cost, while some products are limited by structure size and are not easy to use.
3) general still to cut magnet steel blank using wire cutting at present in magnet steel manufacturing process, wherein to improve production
Efficiency, the jagged wedge angle of surrounding after magnet steel cutting, subsequent vibrator deburring, chamfering.Because being mode of vibration, there are randomness,
The fillet consistency of every magnet steel is bad.Therefore when alinco assembled is pasted, corresponding iron core card slot base angle needs to design enough
It is small, to avoid magnet steel, is pasted and fixed with sharp magnet steel.But this is contradiction with punching core technique, and mould punching fillet needs to protect
It holds 0.2 or more, and the bigger mold wedge angle of fillet is not easy to collapse damage, the service life of mold just can be longer.
Summary of the invention
It is an object of the invention to aiming at the shortcomings in the prior art, provide a kind of servo motor, to solve the prior art
The problem of.
Technical problem solved by the invention can be realized using following technical scheme:
A kind of servo motor, including motor stator, insulated end portions, end cap, rear cover, encoder and rotor；
It is equipped with the first seam allowance in the open end of the motor stator, and is connect by the first seam allowance with insulated end portions, it is described
The inner face of insulated end portions is set as the positioning end face connecting with motor stator, is equipped on positioning end face and cooperates with the first seam allowance
Second seam allowance, insulated end portions pass through the fixed insulating end of encapsulated epoxy resin close to the PCB in motor stator, the inside of motor stator
Portion；
The outer end face of the insulated end portions is set as the connecting end surface connecting with end cap, and the end cap is set as flange on one side
Face is equipped with via hole on the flange surface, and end cap another side is set as concave edge face, and the first screw hole is equipped on the concave edge face；End
Lid passes through via hole by the first screw and is connected and fixed with positioned at motor stator；The flange surface and connecting end surface are fixed to motor
The cambered surface of sub- protrusion, the gap between two cambered surfaces is 0.5mm；
Several second screw holes are equipped in insulated end portions concave edge face, encoder passes through second the second screw hole of screw fit
It is mounted in the concave edge face of insulated end portions, the end face of encoder is retracted in concave edge face；
The rear cover is connected and fixed by the concave edge face of the first screw hole of third screw fit and insulated end portions, rear cover and insulation
The concave edge face of end constitutes seal cavity, and the encoder is wrapped in interior by seal cavity；
The rotor includes rotor core, the axis being arranged in inside rotor core and rotor core is arranged in
Several magnet steel on outer circumference surface；
The rotor core has the axis hole axially penetrated through, and axis is packed into axis hole by hot jacket method or cold-press method, and axis hole
Inner surface and axis outer surface be interference fitted；Several stress are offered on the inner surface of the axis hole of the rotor core to lack
Slot, stress short slot is for preventing the dislocation of rotor core and axis mobile；
Several protrusions on the outer circumference surface of the rotor core, adjacent protrusion is on the outer circumference surface of rotor core
Constitute an escape groove for being used for mounting magnetic steel；The two sides of the escape groove are set as magnet steel clamping side, and it is lean-in that magnet steel is clamped side
Magnet steel position limiting structure is tiltedly constituted, the bottom edge of escape groove is set as bonding magnetic steel side, and adhesive is equipped on bonding magnetic steel side, is used for
Fixed magnet steel, two base angles that the clamping of two magnet steel is constituted while with bonding magnetic steel are fillet；
The magnet steel has the main structure cooperated with escape groove, and magnet steel includes magnet steel bottom edge and two magnet steel sides, magnet steel
Magnet steel position limiting structure is cooperated to be packed into escape groove by two magnet steel sides, magnet steel connects by the way that magnet steel bottom edge and bonding magnetic steel side are fixed
It connects.
Further, the protrusion and escape groove be along the axially extending of rotor core, one end of rotor core be protrusion and
The starting point of escape groove, the other end of rotor core are the terminal of protrusion and escape groove.
Further, the end face width of the stress short slot is greater than the bottom width of stress short slot.
Further, the stress short slot is uniformly distributed along the inner surface of axis hole, each stress short slot is along rotor core
It is axially extending.
Compared with prior art, the beneficial effects of the present invention are:
It is simple in sturcture, ingenious in design, cooperate the design of the efficient magnetic circuit and high copper factor of motor, slim encoder to answer
With can reduce the length of servo motor, drop short ratio about 35%.
Punching core mold can be designed as suitable fillet and guarantee the mould punching service life, and magnet steel is without being precisely controlled fillet
Size can also be packed into rotor core, and craftsmanship is more preferable.
Magnet steel is fixed on iron core by adhesive between magnet steel and rotor core, film thickness is kept by depositing glue, mentions
Sticking strength is risen, to improve rotor operation reliability.
By being set to the short slot of rotor core, is concentrated using the stress that interference fit generates and metaboly, formation are whole
It is mobile to prevent the dislocation of rotor core and axis for claw shape, to improve connection reliability, solves existing in the prior art ask
Topic.
Detailed description of the invention
Fig. 1 is the schematic diagram of servo motor connection structure of the present invention.
Fig. 2 is the schematic diagram of motor stator of the present invention.
Fig. 3 is the schematic diagram of insulated end portions of the present invention.
Fig. 4 is the connection schematic diagram of motor stator of the present invention and insulated end portions.
Fig. 5 a is the schematic diagram of the flange surface of end cap of the present invention.
Fig. 5 b is the schematic diagram in the concave edge face of end cap of the present invention.
Fig. 6 is the schematic diagram in the gap that flange surface of the present invention and connecting end surface are constituted.
Fig. 7 is the sectional view of the connection structure of rotor core of the present invention and axis.
Fig. 8 is the schematic diagram of the connection structure of rotor core of the present invention and axis.
Fig. 9 is the stress schematic diagram of finite element analysis of the present invention.
Figure 10 is the schematic diagram of magnet steel mounting structure of the present invention.
Figure 11 is the schematic diagram of rotor core of the present invention.
Figure 12 is the schematic diagram of escape groove of the present invention.
Figure 13 is the scheme of installation of magnet steel mounting structure of the present invention.
Specific embodiment
To be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below with reference to
Specific embodiment, the present invention is further explained.
Referring to Fig. 1-Figure 13, a kind of servo motor of the present invention, including motor stator (a), insulated end portions (b), end
Cover (c), rear cover (d), encoder (e) and rotor (f)；
It is equipped with the first seam allowance (1) in the open end of the motor stator (a), and passes through the first seam allowance (1) and insulated end portions
(b) it connects, the inner face of the insulated end portions (b) is set as the positioning end face (4) connecting with motor stator (a), in positioning end face
(4) be equipped with the second seam allowance (3) for cooperating with the first seam allowance (1), insulated end portions (b) close to the PCB (2) in motor stator (a),
The inside of motor stator (a) is fixed insulated end portions (b) by encapsulated epoxy resin (5)；
The outer end face of the insulated end portions (b) is set as the connecting end surface (10) connecting with end cap (c), the end cap (c)
It is set as flange surface (6) on one side, is equipped with via hole (7) on the flange surface (6), end cap (c) another side is set as concave edge face (8),
The concave edge face (8) is equipped with the first screw hole (9)；End cap (c) passes through via hole (7) by the first screw (11) to be determined with positioned at motor
Sub (a) is connected and fixed；The flange surface (6) and connecting end surface (10) be to the cambered surface of motor stator (a) protrusion, two cambered surfaces it
Between gap (14) be 0.5mm；
Several second screw holes (12) are equipped in insulated end portions (b) concave edge face (8), encoder (e) passes through the second spiral shell
Nail cooperation the second screw hole (12) is mounted in the concave edge face (8) of insulated end portions (b), and the end face of encoder (e) is retracted in concave edge face
(8) in；
The rear cover (d) is connected by the concave edge face (8) of third screw (13) cooperation the first screw hole (9) and insulated end portions (b)
Fixation, concave edge face (8) the composition seal cavity of rear cover (d) and insulated end portions (b) are connect, seal cavity wraps the encoder (e)
In being rolled in；
The rotor (f) includes rotor core (15), setting in the internal axis (16) of rotor core (15), Yi Jishe
Set several magnet steel (17) on the outer circumference surface of rotor core (a)；
The rotor core (15) has the axis hole (18) axially penetrated through, and axis (16) is packed into axis by hot jacket method or cold-press method
In hole (18), and the outer surface of the inner surface (19) of axis hole (18) and axis (18) is interference fitted；In the rotor core (15)
Several stress short slots (20) are offered on the inner surface (19) of axis hole (18), stress short slot (20) is for preventing rotor core (15)
Dislocation with axis (16) is mobile；
Several raised (21) on the outer circumference surface of the rotor core (15), adjacent protrusion (21) is in rotor core
(15) escape groove (22) for being used for mounting magnetic steel (17) is constituted on outer circumference surface；The two sides of the escape groove (22) are set as
Magnet steel is clamped side (23), and magnet steel is clamped side (23) inward slant and constitutes magnet steel position limiting structure, and the bottom edge of escape groove (22) is set as magnetic
Steel bonding edge (24) is equipped with adhesive on bonding magnetic steel side (24), is used to fix magnet steel (17), and two magnet steel are clamped side (23)
It is fillet with two base angles (25) that bonding magnetic steel side (24) are constituted；
The magnet steel (17) has the main structure that cooperates with escape groove (22), magnet steel (17) include magnet steel bottom edge (26) and
Two magnet steel sides (27), magnet steel (17) cooperate magnet steel position limiting structure to be packed into escape groove (22) by two magnet steel sides (27), magnetic
Steel (17) is fixedly connected by magnet steel bottom edge (26) with bonding magnetic steel side (23).
Along the axially extending of rotor core (15), one end of rotor core (15) is for the protrusion (21) and escape groove (22)
The starting point of raised (21) and escape groove (22), the other end of rotor core (15) are the terminal of raised (1) and escape groove (2).
The end face width of the stress short slot (20) is greater than the bottom width of stress short slot (20).
The stress short slot (20) is uniformly distributed along the inner surface of axis hole (18), each stress short slot (20) is along rotor iron
Core (15) it is axially extending.
Installation process of the invention is as follows:
Motor stator (a) in addition to following general features, comprising winding, stator core, connector, connector fixing screws,
The conventional funcs such as end cap fixing threaded hole are also equipped with connection seam allowance (1), PCB (2)；Insulated end portions (b) have the second fixed seam allowance
(3) and end face (4) are positioned, electricity is fixed on by the tight fit of the second seam allowance (3) and the first seam allowance (1) of motor stator (a)
In machine stator (a), and the positioning end face (4) of insulated end portions (b) is leaned on and calms down the PCB (2) of son, encapsulating inside motor stator (a)
Epoxy resin (5) is fixed overhang insulation (b).
End cap (c), including (9, end cap (c) passes through the first spiral shell for flange surface (6), via hole (7), concave edge face (8) and the first screw hole
4 via holes (7) that nail (11) passes through end cap (c) are fixedly connected with motor stator (a).The flange surface (6) and connecting end surface
It (10) be gap (14) to the cambered surface of motor stator (a) protrusion, between two cambered surfaces is 0.5mm；The length of motor is effectively reduced
Degree.
Encoder (e) is installed on the second screw hole (12) in the concave edge face (8) of end cap (c) by 2 screws, passes through concave edge
The length of motor is effectively reduced in the concave edge face (8) of end cap (c) in the adhered shape of face (8) and encoder, encoder retraction.
Rear cover (d) is connected and fixed by third screw (13) cooperation the first screw hole (9) and the concave edge face (8) of insulated end portions (b), rear cover
(d) seal cavity is constituted with the concave edge face (8) of insulated end portions (b), the encoder (e) is wrapped in interior by seal cavity.
The connection structure of rotor core and axis that the present invention uses, through finite element analysis, on the axis hole of rotor core
After stress short slot, after axis is pressed into rotor core, the stress influence being interference fitted, rotor core generates stress deformation,
Claw structure is formed, to prevent the dislocation of rotor core and axis mobile, to improve connection reliability.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (4)
1. a kind of servo motor, including motor stator (a), insulated end portions (b), end cap (c), rear cover (d), encoder (e) and electricity
Machine rotor (f)；It is characterized by:
It is equipped with the first seam allowance (1) in the open end of the motor stator (a), and even by the first seam allowance (1) and insulated end portions (b)
It connects, the inner face of the insulated end portions (b) is set as the positioning end face (4) connecting with motor stator (a), in positioning end face (4)
Equipped with the second seam allowance (3) cooperated with the first seam allowance (1), insulated end portions (b) are close to the PCB (2) in motor stator (a), motor
The inside of stator (a) is fixed insulated end portions (b) by encapsulated epoxy resin (5)；
The outer end face of the insulated end portions (b) is set as the connecting end surface (10) connecting with end cap (c), the one side of the end cap (c)
Flange surface (6) are set as, are equipped with via hole (7) on the flange surface (6), end cap (c) another side is set as concave edge face (8), described
Concave edge face (8) is equipped with the first screw hole (9)；End cap (c) passes through via hole (7) by the first screw (11) and is located at motor stator
(a) it is connected and fixed；The flange surface (6) and connecting end surface (10) are to the cambered surface of motor stator (a) protrusion, between two cambered surfaces
Gap (14) be 0.5mm；
Several second screw holes (12) are equipped in insulated end portions (b) concave edge face (8), encoder (e) is matched by the second screw
It closes the second screw hole (12) to be mounted in the concave edge face (8) of insulated end portions (b), the end face of encoder (e) is retracted in concave edge face (8)
It is interior；
The rear cover (d) is connect by third screw (13) cooperation the first screw hole (9) with the concave edge face (8) of insulated end portions (b) solid
Fixed, the concave edge face (8) of rear cover (d) and insulated end portions (b) constitutes seal cavity, and the encoder (e) is wrapped in by seal cavity
It is interior；
The rotor (f) includes that the axis (16) and setting of rotor core (15), setting inside rotor core (15) exist
Several magnet steel (17) on the outer circumference surface of rotor core (a)；
The rotor core (15) has the axis hole (18) axially penetrated through, and axis (16) is packed into axis hole by hot jacket method or cold-press method
(18) in, and the outer surface of the inner surface (19) of axis hole (18) and axis (18) is interference fitted；Axis in the rotor core (15)
Offer several stress short slots (20) on the inner surface (19) in hole (18), stress short slot (20) for prevent rotor core (15) and
The dislocation of axis (16) is mobile；
Several raised (21) on the outer circumference surface of the rotor core (15), adjacent protrusion (21) is in rotor core (15)
Outer circumference surface on constitute one be used for mounting magnetic steel (17) escape groove (22)；The two sides of the escape groove (22) are set as magnet steel
It is clamped side (23), magnet steel is clamped side (23) inward slant and constitutes magnet steel position limiting structure, and it is viscous that the bottom edge of escape groove (22) is set as magnet steel
Edge fit (24) is equipped with adhesive on bonding magnetic steel side (24), is used to fix magnet steel (17), and two magnet steel are clamped side (23) and magnetic
Two base angles (25) that steel bonding edge (24) is constituted are fillet；
The magnet steel (17) has the main structure cooperated with escape groove (22), and magnet steel (17) includes magnet steel bottom edge (26) and two magnetic
Steel side (27), magnet steel (17) cooperate magnet steel position limiting structure to be packed into escape groove (22) by two magnet steel sides (27), magnet steel
(17) it is fixedly connected by magnet steel bottom edge (26) with bonding magnetic steel side (23).
2. servo motor according to claim 1, it is characterised in that: the protrusion (21) and escape groove (22) are along rotor iron
Axially extending, starting point of the one end of rotor core (15) for raised (21) and escape groove (22) of core (15), rotor core (15)
The other end be raised (1) and escape groove (2) terminal.
3. servo motor according to claim 1, it is characterised in that: the end face width of the stress short slot (20), which is greater than, answers
The bottom width of power short slot (20).
4. servo motor according to claim 1, it is characterised in that: interior table of the stress short slot (20) along axis hole (18)
Face is uniformly distributed, each stress short slot (20) is along the axially extending of rotor core (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910103217.8A CN109888938A (en) | 2019-02-01 | 2019-02-01 | A kind of servo motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910103217.8A CN109888938A (en) | 2019-02-01 | 2019-02-01 | A kind of servo motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109888938A true CN109888938A (en) | 2019-06-14 |
Family
ID=66927814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910103217.8A Pending CN109888938A (en) | 2019-02-01 | 2019-02-01 | A kind of servo motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109888938A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114629301A (en) * | 2020-08-31 | 2022-06-14 | 广东美的智能科技有限公司 | Motor and servo control system with same |
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| CN205986393U (en) * | 2016-08-30 | 2017-02-22 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor and magnet steel fixed knot constructs, motor thereof |
| CN206517239U (en) * | 2017-02-22 | 2017-09-22 | 浙江永发机电有限公司 | A kind of servomotor |
| CN210053254U (en) * | 2019-02-01 | 2020-02-11 | 东菱技术有限公司 | Servo motor |
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2019
- 2019-02-01 CN CN201910103217.8A patent/CN109888938A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204030755U (en) * | 2014-06-24 | 2014-12-17 | 中山大洋电机股份有限公司 | A kind of rotor and apply its plastic packaging motor |
| CN205986393U (en) * | 2016-08-30 | 2017-02-22 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor and magnet steel fixed knot constructs, motor thereof |
| CN106329799A (en) * | 2016-10-21 | 2017-01-11 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor sealing structure and motor |
| CN206517239U (en) * | 2017-02-22 | 2017-09-22 | 浙江永发机电有限公司 | A kind of servomotor |
| CN210053254U (en) * | 2019-02-01 | 2020-02-11 | 东菱技术有限公司 | Servo motor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114629301A (en) * | 2020-08-31 | 2022-06-14 | 广东美的智能科技有限公司 | Motor and servo control system with same |
| CN114629303A (en) * | 2020-08-31 | 2022-06-14 | 广东美的智能科技有限公司 | Motor and servo control system with same |
| CN114629303B (en) * | 2020-08-31 | 2023-12-01 | 广东美的智能科技有限公司 | Motor and servo control system with same |
| CN114629301B (en) * | 2020-08-31 | 2023-12-01 | 广东美的智能科技有限公司 | Motor and servo control system with same |
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