CN204858923U - A directly drive formula permanent magnetism AC servo motor for forging press - Google Patents
A directly drive formula permanent magnetism AC servo motor for forging press Download PDFInfo
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- CN204858923U CN204858923U CN201520469902.XU CN201520469902U CN204858923U CN 204858923 U CN204858923 U CN 204858923U CN 201520469902 U CN201520469902 U CN 201520469902U CN 204858923 U CN204858923 U CN 204858923U
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- forging press
- servo motor
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Abstract
The utility model provides a directly drive formula permanent magnetism AC servo motor for forging press, this motor of includes: the common motor housing who constitutes of pivot, fore bearing, front end housing, rear bearing, rear end cap and casing, fix on the pivot is located to the stator of casing inner wall and cover and relative interval with the stator sets up the rotor, the rotor includes and folds the rotor core who presses along the pivot axial that rotor core has hollowed out the through -hole for the table pastes a formula field structure, keep away from the shaft hole outside and set up multipolar magnetic pole along rotor core circumference even interval, and every utmost point magnetic pole comprises a permanent magnet separately, and every utmost point magnetic pole is tile type structure and pastes in the rotor core surface that corresponds, and every utmost point magnetic pole has off -centre apart from structure, the stator includes stator core, is formed with a plurality of cooling pipe grooves on this stator core's the outer wall, and these cooling pipe grooves are for the rectangle helicla flute and be used for embedding cooling copper pipe, possess the stator tooth that its circumference of a plurality of edges was arranged on stator core's the inner wall, set up a circular arc auxiliary tank on the arc end face of every stator tooth, form the stator slot between adjacent stator tooth for embedding three -phase winding.
Description
Technical field
The utility model relates to technical field of motors, is specifically related to a kind of direct drive permanent magnetic AC servo motor for forging press.
Background technology
Forging press is equipment important in metal forming.Forging press to efficiency, the cost of drive motors, exert oneself, requirement on machining accuracy is more and more higher, this requires, and the efficiency of motor is high, torque density is high, torque pulsation is low, rotating speed is steady, overload capacity is high, control precision is high.
Existing forging press drive motors is mainly divided into two kinds, is respectively asynchronous machine and permanent-magnet servo motor.
In the prior art, asynchronous machine rotor can produce loss, and electric efficiency is low, and rotor heating is serious, can shorten electrical machinery life.The power factor of asynchronous machine is lower, and drive unit capacity is large, and cost is very high.Asynchronous torque density, power density are low, and motor volume weight is comparatively large, are unfavorable for that startup and standard are stopped fast, motor low-response.Asynchronous motor control is complicated, and speed setting controller cost is high, is not easy the adjustment of the speed that realizes to reach energy-conservation effect.
For the permagnetic synchronous motor of forging press in prior art, be generally the version that motor adds transmission mechanism, this type of motor can cause energy consumption increase, decrease in efficiency through transmission mechanism; Motor torque ripple is large, can cause motor speed fluctuate large, degree of operating steadily is low, finally shows as machining accuracy low.
Summary of the invention
For above defect or the Improvement requirement of prior art, the utility model provides a kind of direct drive permanent magnetic AC servo motor for forging press, both there is high torque density, high power density, advantage that response is fast, also there is the advantage that Gas-gap Magnetic Field Resonance Wave is little, sine degree of back electromotive force is high and torque ripple is little, also there is the feature of high overload ability, high mechanical properties, rapid heat dissipation, be particularly useful for forging press field.
For achieving the above object, the utility model provides a kind of direct drive permanent magnetic AC servo motor for forging press, this motor comprises: rotating shaft, fore bearing, front end housing, rear bearing, the motor housing that rear end cap and casing are formed jointly, be fixed on the stator of casing inner wall and be sheathed in rotating shaft and rotor is set with stator relative spacing, wherein, described rotor is surface-mount type field structure, comprise the rotor core axially laminated along rotating shaft, rotor core is provided with through hole, away from outside axis hole and along rotor core circumference uniform intervals multi-magnetic-pole is set, the each freedom of every pole magnetic pole one piece of permanent magnet composition, every pole magnetic pole is tile-type structure and is pasted on corresponding rotor core surface, every pole magnetic pole has stator described in eccentric throw structure and comprises stator core, the outer wall of this stator core is formed with multiple cooling pipe groove, these cooling pipe grooves are rectangular spiral groove and for embedding cooling copper tube, the inwall of stator core possesses multiple stator tooth along its circumferential array, the curved end of each stator tooth is arranged a circular arc auxiliary tank, adjacent stators between cog forms stator slot, three-phase windings is embedded in stator slot, for induced potential, produces electromagnetic torque, to realize power conversion.
As further preferably, the magnetizing direction of described magnetic pole is parallel magnetization.
As further preferably, the eccentric throw of described magnetic pole is 50mm, i.e. magnetic pole upper surface circular arc and lower surface circular arc decentraction, and both centers of circle are relativity shift 50mm on same vertical straight line.
As further preferably, described rotor core through hole is 360 ° of settings along the circumferential direction, totally 8, and these 8 through holes form parallel constructions, and each through hole radius is 8 ~ 12mm.
The position of through hole, size and number can be adjusted according to actual needs, reach the adjustment moment of inertia of motor, the object of weight.
As further preferably, the radius of described circular arc auxiliary tank is 1 ~ 1.5mm, and the circular arc auxiliary tank center of circle is positioned in stator tooth curved end radial centre lines.
As further preferably, the described direct drive permanent magnetic AC servo motor for forging press is 8 pole 48 groove structures, and winding pitch is 5.
In general, compared with prior art, the beneficial effect acquired by the utility model is as follows for the above technical scheme conceived by the utility model:
(1) magnetic pole adopts eccentric throw structure, reduces the Gas-gap Magnetic Field Resonance Wave of motor, increases the sine degree in motor gas-gap magnetic field, weakens the torque ripple of motor, improve the machining accuracy of forging press;
(2) rotor core is provided with through hole, and the existence of through hole can reduce the moment of inertia of motor, improves the response speed of motor, can realize rapid starting/stopping, requirement that rotating speed changes fast;
(3) stator tooth end face adopts the auxiliary tank structure of a circular arc, while improving motor torque density, weaken the cogging torque of motor, reduce the Gas-gap Magnetic Field Resonance Wave of motor, improve the sine degree of air-gap field and back-emf, reduce torque ripple and the fluctuation of speed of motor, may ultimately reach the object improving rotating speed smoothness and improve machining accuracy;
(4) by arranging water cooling pipe-line tank on stator outer wall, increase the film-cooled heat contacted with stator core on the one hand, cooling copper tube be embedded in water cooling pipe-line tank on the other hand, current circulate in cooling copper tube, take away stator heat; And structure is simple, processing is simple and cost is low, while improving motor torque density and power density, accelerates the heat radiation of motor, improves the life-span of motor; In addition, the overload capacity of motor can be improved;
(5) direct drive structure of described motor direct-drive forging press, without transmission mechanism, form direct drive structure, electric machine structure is simply compact, and torque pulsation is low, degree of operating steadily is high, improves the machining accuracy of forging press while improving electric efficiency.
Accompanying drawing explanation
Fig. 1 is the direct drive permanent magnetic AC servo motor structural representation of the forging press of the utility model embodiment;
Fig. 2 is rotor structure schematic diagram of the present utility model;
Fig. 3 is stator structure schematic diagram of the present utility model.
In all of the figs, identical Reference numeral is used for representing identical element or structure, wherein:
1-drives interface, 2-rotating shaft, 3-fore bearing, 4-front end housing, 5-three-phase windings, 6-stator, 7-cooling pipe groove, 8-casing, 9-rotor, 10-rear end cap, 11-rear bearing, 12-photoelectric encoder, 13-permanent magnet, 14-rotor core, 15-rotor core through hole, 16-axis hole, 17-rear end cap hollow hole, 18-stator yoke, 19-stator slot, 20-circular arc auxiliary tank, 21-stator tooth.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.In addition, if below in described each execution mode of the utility model involved technical characteristic do not form conflict each other and just can mutually combine.
As shown in Figure 1, the direct drive permanent magnetic AC servo motor for forging press comprises: drive interface 1, rotating shaft 2, fore bearing 3, front end housing 4, rear bearing 11, rear end cap 10, photoelectric encoder 12, rotor 9, stator 6.Interface 1 is driven to be positioned at rotating shaft 2 foremost, for connecting Drive Structure; Front end housing 4 is arranged on the front end of rotating shaft 2 by fore bearing 3, and rear end cap 10 is arranged on the rear end of rotating shaft 2 by rear bearing 11, and front end housing 4 and rear end cap 10 are connected with the front and back ends of casing 8 respectively, the common shell forming motor; Photoelectric encoder 12 is fixed between rear end cap 10 and rear bearing 11, and stator 6 is fixed on casing 8 inwall, and rotor 9 to be sheathed in rotating shaft 2 and to arrange with stator 6 relative spacing.
As shown in Figure 2, described rotor 9 for the direct drive permanent magnetic AC servo motor of forging press is surface-mount type field structure, comprise the rotor core 14 axially laminated along rotating shaft, away from arranging 8 pole magnetic poles along the circumferential uniform intervals of rotor core 14 outside axis hole 16, the each freedom of every pole magnetic pole one piece of permanent magnet 13 forms, every pole magnetic pole is tile-type structure and is pasted on corresponding rotor core 14 surface, and every pole magnetic pole has eccentric throw structure, and the magnetizing direction of magnetic pole is parallel magnetization; Rotor core is provided with through hole 15, and through hole number is 8, and radius is 8 ~ 12mm, can adjust position and the size of through hole according to actual needs, reaches the adjustment moment of inertia of motor, the object of weight.
As shown in Figure 3, stator 6 comprises stator core, the outer wall of this stator core is formed with multiple cooling pipe groove 7, and these cooling pipe grooves are rectangular spiral groove and for embedding cooling copper tube; The inwall of stator core possesses multiple stator tooth 21 along its circumferential array, the curved end of each stator tooth 21 arranges a circular arc auxiliary tank 20; Form stator slot 19 between adjacent stators tooth 21, for embedding three-phase windings 5, wherein, stator slot 19 is preferably 48, forms 48 groove structures.The curved end of each stator tooth 21 is arranged a circular arc auxiliary tank 20, the radius of circular arc auxiliary tank 20 is 1 ~ 1.5mm, and the circular arc auxiliary tank center of circle is positioned in stator tooth curved end radial centre lines; Three-phase windings 5 is embedded in stator slot 19, for induced potential, produces electromagnetic torque, to realize power conversion; The cooling copper tube and three-phase windings 5 leading-out terminal that are embedded in cooling pipe 7 pick out from the rear end cap hollow hole 17 rear end cap 10, and three-phase windings 5 leading-out terminal is connected with electric machine controller.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (6)
1. the direct drive permanent magnetic AC servo motor for forging press, this motor comprises: the motor housing that rotating shaft, fore bearing, front end housing, rear bearing, rear end cap and casing are formed jointly, be fixed on casing inner wall stator and to be sheathed in rotating shaft and rotor be set with stator relative spacing, it is characterized in that
Described rotor is surface-mount type field structure, comprise the rotor core axially laminated along rotating shaft, rotor core has hollowed out through hole, away from outside axis hole and along rotor core circumference uniform intervals multi-magnetic-pole is set, the each freedom of every pole magnetic pole one piece of permanent magnet composition, every pole magnetic pole is tile-type structure and is pasted on corresponding rotor core surface, and every pole magnetic pole has eccentric throw structure;
Described stator comprises stator core, the outer wall of this stator core is formed with multiple cooling pipe groove, and these cooling pipe grooves are rectangular spiral groove and for embedding cooling copper tube; The inwall of stator core possesses multiple stator tooth along its circumferential array, the curved end of each stator tooth is arranged a circular arc auxiliary tank; Adjacent stators between cog forms stator slot, for embedding three-phase windings.
2., as claimed in claim 1 for the direct drive permanent magnetic AC servo motor of forging press, it is characterized in that, the magnetizing direction of described magnetic pole is radial magnetizing, and magnetic pole has eccentric throw structure.
3. as claimed in claim 1 or 2 for the direct drive permanent magnetic AC servo motor of forging press, it is characterized in that, described rotor core through hole is 360 ° of settings along the circumferential direction, and 8 through holes form balanced structure, and radius is 8 ~ 12mm.
4., as claimed in claim 1 or 2 for the direct drive permanent magnetic AC servo motor of forging press, it is characterized in that, the radius of described circular arc auxiliary tank is 1 ~ 1.5mm, and the circular arc auxiliary tank center of circle is positioned in stator tooth curved end radial centre lines.
5., as claimed in claim 1 or 2 for the direct drive permanent magnetic AC servo motor of forging press, it is characterized in that, described is 8 pole 48 groove structures for permanent-magnet alternating current servo motor, and winding pitch is 5.
6. as claimed in claim 1 or 2 for the direct drive permanent magnetic AC servo motor of forging press, it is characterized in that, described motor direct-drive forging press, without transmission mechanism, form direct drive structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520469902.XU CN204858923U (en) | 2015-07-03 | 2015-07-03 | A directly drive formula permanent magnetism AC servo motor for forging press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520469902.XU CN204858923U (en) | 2015-07-03 | 2015-07-03 | A directly drive formula permanent magnetism AC servo motor for forging press |
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|---|---|
| CN204858923U true CN204858923U (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520469902.XU Expired - Fee Related CN204858923U (en) | 2015-07-03 | 2015-07-03 | A directly drive formula permanent magnetism AC servo motor for forging press |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105406673A (en) * | 2015-12-31 | 2016-03-16 | 苏州航天林泉电机有限公司 | Low-voltage wide-speed adjustment permanent magnet synchronous motor |
| CN106961175A (en) * | 2017-05-26 | 2017-07-18 | 江西清华泰豪三波电机有限公司 | Magneto outer rotor and the magneto for adjusting magnetic shoe shape |
| CN108787972A (en) * | 2018-06-15 | 2018-11-13 | 郭小红 | The intelligent straight electromagnetism that drives forges hammer |
| TWI706854B (en) * | 2016-03-14 | 2020-10-11 | 日商吉野機械製作所股份有限公司 | AC servo press device |
-
2015
- 2015-07-03 CN CN201520469902.XU patent/CN204858923U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105406673A (en) * | 2015-12-31 | 2016-03-16 | 苏州航天林泉电机有限公司 | Low-voltage wide-speed adjustment permanent magnet synchronous motor |
| TWI706854B (en) * | 2016-03-14 | 2020-10-11 | 日商吉野機械製作所股份有限公司 | AC servo press device |
| CN106961175A (en) * | 2017-05-26 | 2017-07-18 | 江西清华泰豪三波电机有限公司 | Magneto outer rotor and the magneto for adjusting magnetic shoe shape |
| CN108787972A (en) * | 2018-06-15 | 2018-11-13 | 郭小红 | The intelligent straight electromagnetism that drives forges hammer |
| CN108787972B (en) * | 2018-06-15 | 2024-05-24 | 郭小红 | Intelligent direct-drive electromagnetic forging hammer |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20160703 |
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| CF01 | Termination of patent right due to non-payment of annual fee |