CN105171007B - A kind of exchange spindle motor unit and its driving method - Google Patents
A kind of exchange spindle motor unit and its driving method Download PDFInfo
- Publication number
- CN105171007B CN105171007B CN201510525914.4A CN201510525914A CN105171007B CN 105171007 B CN105171007 B CN 105171007B CN 201510525914 A CN201510525914 A CN 201510525914A CN 105171007 B CN105171007 B CN 105171007B
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- Prior art keywords
- spindle motor
- motor unit
- main shaft
- current
- torque
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- 238000000034 method Methods 0.000 title claims abstract description 11
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000001514 detection method Methods 0.000 claims abstract description 9
- 230000008859 change Effects 0.000 claims abstract description 6
- 230000009885 systemic effect Effects 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 4
- 238000000227 grinding Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000004078 waterproofing Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/70—Stationary or movable members for carrying working-spindles for attachment of tools or work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/02—Driving main working members
- B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
- B23Q5/10—Driving main working members rotary shafts, e.g. working-spindles driven essentially by electrical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Machine Tool Sensing Apparatuses (AREA)
Abstract
The present invention proposes a kind of exchange spindle motor unit and its driving method,The electric current and rotating speed of detection electro spindle in real time,Calculate the attenuation of electro spindle torque,And pass through the rotating speed for the electric current change electro spindle for adjusting input electro spindle,Compensation is made to the attenuation of electro spindle torque,5-shaft linkage numerical control lathe is met to electro spindle large torque,The requirement of the slow-speed of revolution,Allow to overload in the case where specifying rotating speed,Overcome resistance of the workpiece to cutter,Suitable for the heavy cut that bite is deeper,The work such as grinding,Including housing,And it is arranged at the main shaft within housing,The both ends of main shaft are socketed with front-end bearing pedestal and rear bearing block,Encoder,Drive module and host computer,Encoder is connected with main shaft,To detect the speed of mainshaft,The input terminal of spindle motor unit is connected with driving unit,Driving unit changes the rotating speed of main shaft by adjusting the size of current of input spindle motor unit,Host computer is connected with driving unit,Host computer calculates the torque of spindle motor unit according to the electric current of spindle motor unit and the rotating speed of main shaft,When torque is decayed,Host computer sends the electric current of instruction increasing input spindle motor unit to driving unit.
Description
Technical field
The present invention relates to a kind of main axle units applied to numerically-controlled machine tool, and in particular to one kind is applied to five axis cutter sharpeners
Exchange spindle motor unit and its driving method.
Background technology
High Speed NC Machine Tools (CNC) are one of technical foundation and developing direction of equipment manufacture, High Speed NC Machine Tools
Working performance, is dependent firstly on the performance of exchange spindle motor unit, and numerically-controlled machine tool exchange spindle motor unit influences system of processing
Precision, stability and application range, power performance and stability play High-speed machining crucial effect.
The electro spindle of country's prior art generally uses the driving power of synchronous motor or asynchronous machine as main shaft at present
Source.Synchronous motor is using the risk among process there are stall and loss of excitation, causes the failure for asynchronous operation occur, uses simultaneously
Cost is higher.Asynchronous machine then overcomes its low torque and low bite deficiency, but process time using putting forward high-revolving mode
It is long, inefficiency.
The content of the invention
In order to solve the above technical problems, spindle motor unit and its driving method are exchanged the object of the present invention is to provide a kind of,
Realize large torque, the motor drive mode of the slow-speed of revolution meets the requirement of numerical control machine height of bed bite.
In order to achieve the above object, one aspect of the present invention provide it is a kind of exchange spindle motor unit include housing (1) and
The main shaft (2) being arranged within housing (1), the both ends of main shaft (2) are socketed with front-end bearing pedestal (8) and rear bearing block (9), main shaft
(2) centre is socketed with rotor (4), be additionally provided in housing (1) with the corresponding stator (3) with winding of rotor (4),
Encoder (5), drive module and host computer (7) are further included, the encoder (5) is connected with main shaft (2), to detect main shaft
(2) rotating speed, the input terminal of the spindle motor unit are connected with driving unit (6), and the driving unit (6) is by adjusting input electricity
The size of current of main axle unit changes the rotating speed of main shaft (2), and the host computer (7) is connected with driving unit (6), the host computer
(7) torque of spindle motor unit is calculated according to the rotating speed of the electric current of spindle motor unit and main shaft (2), when torque is decayed
When, host computer (7) sends the electric current of instruction increasing input spindle motor unit to driving unit (6).
Further, the driving unit (6) further includes current detector (61) and frequency converter (62), the current detecting
Device (61) detect spindle motor unit size of current, the frequency converter (62) to change into spindle motor unit power supply alternating current
Frequency.
Further, main shaft (2) front end has a fixture connector (11), and the fixture connector (11) is rounding
Tapered opening, the front-end bearing pedestal (8) are socketed on fixture connector (11).
Further, fore bearing end seat (10) and fore bearing upper cover (12) are further included, the fore bearing end seat (10) is with before
Bearing block (8) connects, and the fore bearing upper cover (12) is connected with front-end bearing pedestal (8), the fore bearing end seat (10) and fore bearing
Multiple annular recess and annular relief, the annular recess and annular relief structure are also respectively provided in upper cover (12)
Into labyrinth type protection cavity (13), annular deflector hole (14), the deflector hole (14) are provided on lid on the front-end bearing pedestal (8)
It is connected with labyrinth type protection cavity (13).
Further, several sealings are additionally provided between the labyrinth type protection cavity (13) and fore bearing upper cover (12)
Circle, the sealing ring are socketed on annular recess.
Further, several annular water tanks (15) are additionally provided on housing (1) side.
On the other hand, the present invention also provides a kind of driving method for exchanging spindle motor unit, comprise the following steps：
P1 starts spindle motor unit；
P2, encoder (5) detection main shaft (2) real-time rotating speed, the electric current of driving unit (6) detection input spindle motor unit
Size；
P3, host computer (7) calculate current electricity master according to the rotating speed of main shaft (2) and the size of current of input spindle motor unit
The torque of axle unit, when torque is decayed, host computer (7) sends instruction to driving unit (6)；
P4, driving unit (6) receive instruction, increase the size of current of input spindle motor unit.
Further, the step P3 is further included：
P31, to the systemic presupposition value of host computer (7) input torque；
P32, by the current torque of spindle motor unit compared with systemic presupposition value, current torque is less than host computer (7)
During current system value, judge that the torque of spindle motor unit is decayed, host computer (7) sends instruction to driving unit (6)；
Further, step P5 is further included, host computer (7) continues after driving unit (6) sends instruction by electro spindle list
The current torque of member when current torque is more than or equal to current system value, stops to driving unit compared with systemic presupposition value
(6) instruction is sent.
Further, the driving unit (6) further includes current detector (61) and frequency converter (62), the current detecting
Device (61) detect spindle motor unit size of current, the frequency converter (62) to change into spindle motor unit power supply alternating current
Frequency.
The present invention compared with the existing technology, has the following advantages and beneficial effect：
1st, the present invention detects the electric current and rotating speed of electro spindle (2) in real time, calculates the attenuation of electro spindle (2) torque, and leads to
The electric current for overregulating input electro spindle (2) changes the rotating speed of electro spindle (2), and compensation is made to the attenuation of electro spindle (2) torque, full
Foot 5-shaft linkage numerical control lathe allows to overload, overcome to electro spindle (2) large torque, the requirement of the slow-speed of revolution in the case where specifying rotating speed
Resistance of the workpiece to cutter, suitable for work such as the deeper heavy cut of bite, grindings.
2nd, the present invention is compact-sized, and fixture connector (11) ensures the stability of fixture for inverted conical opening, prevents from pressing from both sides
Tool comes off during the work time, and fore bearing end seat (10) and fore bearing upper cover (12) are protected using labyrinth type, main shaft (2) housing
(1) annular water tank (15) is provided on, water proofing property of the main shaft (2) among the course of work is ensure that, mist of oil will not be cooled
Intrusion, add the reliability of spindle motor unit.
Description of the drawings
It in order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other attached drawings according to these attached drawings.
Fig. 1 is the system construction drawing of the embodiment of the present invention.
Main element symbol description：
Housing (1) main shaft (2) stator (3) rotor (4) encoder (5) driving unit (6) current detector (61)
Before frequency converter (62) host computer (7) front-end bearing pedestal (8) rear bearing block (9) fore bearing end seat (10) fixture connector (11)
Bearing upper cover (12) labyrinth type protects cavity (13) deflector hole (14) annular water tank (15)
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts
Embodiment belongs to the scope of protection of the invention.
A kind of exchange spindle motor unit of the present embodiment as shown in Figure 1, the Asynchronous Communication electricity including the large torque slow-speed of revolution
Machine and main shaft (2).The motor includes being assembled in the stator (3) with winding, rotor (4), the encoder on housing (1)
(5), the components such as driving unit (6).Rotor (4) uses rotor (4) hollow structure, and permanent magnet is sticked on the inside of hollow structure, turns
Sub (4) are fixed by socket to be rotated on main shaft (2) together with main shaft (2).Encoder (5) is installed on the afterbody of main shaft (2), to
Detect main shaft (2) rotating speed.The input terminal of motor is connected with driving unit (6), and driving unit (6) is by adjusting input electro spindle list
The size of current of member changes the rotating speed of main shaft (2).Driving unit (6) is connected with host computer (7), and host computer (7) is according to electro spindle
The rotating speed of the electric current and main shaft (2) of unit calculates the torque of spindle motor unit, when torque is decayed, host computer (7) to
Driving unit (6) sends the electric current that instruction increases input spindle motor unit.
Preferably, driving unit (6) includes current detector (61) and frequency converter (62), current detector (61) measurement electricity
The size of machine input current.Arrangements for speed regulation of the frequency converter (62) as main shaft (2) rotating speed, exchange are electrically accessed frequency converter (62), become
Frequency device (62) carries out frequency conversion after over commutation, filtering, inversion, changes main shaft (2) according to the control instruction of host computer (7)
Rotating speed.
Main shaft (2) is arranged within housing (1), the both ends of main shaft (2) be socketed with front-end bearing pedestal (8) and rear bearing block (9),
The centre of the front-end bearing pedestal (8) and main shaft (2) is socketed with rotor (4), is additionally provided in housing (1) corresponding with rotor (4)
The stator (3) with winding.Encoder (5) is connected with main shaft (2), to detect main shaft (2) rotating speed.Spindle motor unit it is defeated
Enter end to be connected with driving unit (6), driving unit (6) changes main shaft (2) by adjusting the size of current of input spindle motor unit
Rotating speed.Host computer (7) is connected with driving unit (6), is calculated according to the rotating speed of the electric current of spindle motor unit and main shaft (2)
The torque of spindle motor unit, when torque is decayed, host computer (7) sends instruction to driving unit (6) and increases input electricity master
The electric current of axle unit.
On the other hand, the present invention also provides a kind of driving method for exchanging spindle motor unit, comprise the following steps：
P1 starts spindle motor unit；
P2, encoder (5) detection main shaft (2) real-time rotating speed, the electric current of driving unit (6) detection input spindle motor unit
Size；
P3, host computer (7) calculate current electricity master according to the rotating speed of main shaft (2) and the size of current of input spindle motor unit
The torque of axle unit, when torque is decayed, host computer (7) sends instruction to driving unit (6)；
P4, driving unit (6) receive instruction, increase the size of current of input spindle motor unit.
Further, the step P3 is further included：
P31, to the systemic presupposition value of host computer (7) input torque；
P32, by the current torque of spindle motor unit compared with systemic presupposition value, current torque is less than host computer (7)
During current system value, judge that the torque of spindle motor unit is decayed, host computer (7) sends instruction to driving unit (6)；
Further, step P5 is further included, host computer (7) continues after driving unit (6) sends instruction by electro spindle list
The current torque of member when current torque is more than or equal to current system value, stops to driving unit compared with systemic presupposition value
(6) instruction is sent.
Further, the driving unit (6) further includes current detector (61) and frequency converter (62), the current detecting
Device (61) detect spindle motor unit size of current, the frequency converter (62) to change into spindle motor unit power supply alternating current
Frequency.
The present invention compared with the existing technology, has the following advantages and beneficial effect：
1st, the present invention detects the electric current and rotating speed of electro spindle (2) in real time, calculates the attenuation of electro spindle (2) torque, and leads to
The electric current for overregulating input electro spindle (2) changes the rotating speed of electro spindle (2), and compensation is made to the attenuation of electro spindle (2) torque, full
Foot 5-shaft linkage numerical control lathe allows to overload, overcome to electro spindle (2) large torque, the requirement of the slow-speed of revolution in the case where specifying rotating speed
Resistance of the workpiece to cutter, suitable for work such as the deeper heavy cut of bite, grindings.
2nd, the present invention is compact-sized, and fixture connector (11) ensures the stability of fixture for inverted conical opening, prevents from pressing from both sides
Tool comes off during the work time, fore bearing end seat (10) and fore bearing upper cover (12) are protected using labyrinth type, main shaft (2) housing
(1) annular water tank (15) is provided on, water proofing property of the main shaft (2) among the course of work is ensure that, mist of oil will not be cooled
Intrusion, add the reliability of spindle motor unit.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modifications, equivalent replacements and improvements are made should all be included in the protection scope of the present invention god.
Claims (6)
1. a kind of exchange spindle motor unit, including housing (1) and the main shaft (2) being arranged within housing (1), main shaft (2)
Both ends are socketed with front-end bearing pedestal (8) and rear bearing block (9), and the centre of main shaft (2) is socketed with rotor (4), is also set up in housing (1)
Have with the corresponding stator (3) with winding of rotor (4), which is characterized in that further include encoder (5), drive module and on
Position machine (7), the encoder (5) is connected with main shaft (2), to detect main shaft (2) rotating speed, the input terminal of the spindle motor unit
It is connected with driving unit (6), the driving unit (6) changes main shaft (2) by adjusting the size of current of input spindle motor unit
Rotating speed, the host computer (7) is connected with driving unit (6), and the host computer (7) is according to the electric current and main shaft of spindle motor unit
(2) rotating speed calculates the torque of spindle motor unit, and when torque is decayed, host computer (7) sends finger to driving unit (6)
Order increases the electric current of input spindle motor unit, and the driving unit (6) further includes current detector (61) and frequency converter (62), institute
The size of current of current detector (61) detection spindle motor unit is stated, the frequency converter (62) supplies to change into spindle motor unit
The ac frequency of electricity, main shaft (2) front end have a fixture connector (11), and the fixture connector (11) is inverted cone
Shape opening, the front-end bearing pedestal (8) are socketed on fixture connector (11).
2. a kind of exchange spindle motor unit as described in claim 1, which is characterized in that the main shaft (2) further includes fore bearing
End seat (10) and fore bearing upper cover (12), the fore bearing end seat (10) are connected with front-end bearing pedestal (8), the fore bearing upper cover
(12) it is connected with front-end bearing pedestal (8), multiple rings is also respectively provided in the fore bearing end seat (10) and fore bearing upper cover (12)
Shape recessed portion and annular relief, the annular recess and annular relief form labyrinth type protection cavity (13), before described
Annular deflector hole (14) is provided on bearing upper cover (12), the deflector hole (14) connects with labyrinth type protection cavity (13).
3. a kind of exchange spindle motor unit as claimed in claim 2, which is characterized in that the labyrinth type protection cavity (13) and
Several sealing rings are additionally provided between fore bearing upper cover (12), the sealing ring is socketed on annular recess.
4. a kind of exchange spindle motor unit as described in Claim 1-3 is any, which is characterized in that on housing (1) side
It is additionally provided with several annular water tanks (15).
5. a kind of driving method for exchanging spindle motor unit, which is characterized in that comprise the following steps：
P1 starts spindle motor unit；
P2, encoder (5) detection main shaft (2) real-time rotating speed, the electric current of driving unit (6) detection input spindle motor unit are big
It is small；
P3, host computer (7) calculate current electro spindle list according to the rotating speed of main shaft (2) and the size of current of input spindle motor unit
The torque of member, host computer (7) have the systemic presupposition value of a torque, and host computer (7) is by the current torque of spindle motor unit with being
System preset value is compared, and when current torque is less than current system value, judges that torque is decayed, and host computer (7) is single to driving
First (6) send instruction；
P4, driving unit (6) receive instruction, increase the size of current of input spindle motor unit；
P5, host computer (7) continue after driving unit (6) sends instruction by the current torque and systemic presupposition of spindle motor unit
Value is compared, and when current torque is more than or equal to current system value, stops sending instruction to driving unit (6).
A kind of 6. driving method for exchanging spindle motor unit as claimed in claim 5, which is characterized in that the driving unit
(6) current detector (61) and frequency converter (62) are further included, the electric current of current detector (61) the detection spindle motor unit is big
It is small, the frequency converter (62) to change into spindle motor unit power supply ac frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510525914.4A CN105171007B (en) | 2015-08-25 | 2015-08-25 | A kind of exchange spindle motor unit and its driving method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510525914.4A CN105171007B (en) | 2015-08-25 | 2015-08-25 | A kind of exchange spindle motor unit and its driving method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105171007A CN105171007A (en) | 2015-12-23 |
| CN105171007B true CN105171007B (en) | 2018-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510525914.4A Expired - Fee Related CN105171007B (en) | 2015-08-25 | 2015-08-25 | A kind of exchange spindle motor unit and its driving method |
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| Country | Link |
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| CN (1) | CN105171007B (en) |
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| CN107932290B (en) * | 2017-11-20 | 2020-05-22 | 深圳市普盛旺科技有限公司 | Polishing wheel torque force control method and device and polishing machine system |
| CN108788927A (en) * | 2018-06-19 | 2018-11-13 | 珠海格力智能装备有限公司 | Method and device for monitoring machine tool |
| CN112872378B (en) * | 2021-01-12 | 2022-03-04 | 江苏博尚工业装备有限公司 | Conveniently dismantle interior concealed electricity main shaft of maintenance |
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| CN201979343U (en) * | 2010-12-11 | 2011-09-21 | 西安合升动力科技有限公司 | Dust-proof sealing type alternate current permanent magnet synchronous electric spindle |
| CN104485768A (en) * | 2014-11-05 | 2015-04-01 | 杭州华星轴承有限公司 | Non-oil-mist energy saving environmental protection electric main shaft |
| CN205032743U (en) * | 2015-08-25 | 2016-02-17 | 上海嘉准机械设备有限公司 | Alternating current main shaft unit |
-
2015
- 2015-08-25 CN CN201510525914.4A patent/CN105171007B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1158288A (en) * | 1995-05-19 | 1997-09-03 | H·S·D·有限公司 | Electric spindle for tool balancing machine |
| WO2001098034A1 (en) * | 2000-06-19 | 2001-12-27 | Estic Corporation | Control method and controller for screw tightener |
| CN1870418A (en) * | 2006-04-25 | 2006-11-29 | 深圳市中传电气技术有限公司 | Constant torque output high voltage high power frequency changer and its control method |
| CN1907607A (en) * | 2006-08-23 | 2007-02-07 | 大连交通大学 | Magnet motive numerical control machine electricity main axis system without bearing and generator |
| CN201711838U (en) * | 2010-07-17 | 2011-01-19 | 襄阳汽车轴承股份有限公司 | Electric main axle |
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| CN201918846U (en) * | 2010-12-29 | 2011-08-03 | 广州市昊志机电有限公司 | Stator water-cooling structure of air-float motorized spindle |
| CN104485768A (en) * | 2014-11-05 | 2015-04-01 | 杭州华星轴承有限公司 | Non-oil-mist energy saving environmental protection electric main shaft |
| CN205032743U (en) * | 2015-08-25 | 2016-02-17 | 上海嘉准机械设备有限公司 | Alternating current main shaft unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105171007A (en) | 2015-12-23 |
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