CN104525980B - Ultrahigh-speed, high-precision and large-power electric main shaft - Google Patents
Ultrahigh-speed, high-precision and large-power electric main shaft Download PDFInfo
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- CN104525980B CN104525980B CN201410696934.3A CN201410696934A CN104525980B CN 104525980 B CN104525980 B CN 104525980B CN 201410696934 A CN201410696934 A CN 201410696934A CN 104525980 B CN104525980 B CN 104525980B
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- bearing
- stator
- rotor
- oil duct
- electro spindle
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- 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
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/12—Arrangements for cooling or lubricating parts of the machine
- B23Q11/121—Arrangements for cooling or lubricating parts of the machine with lubricating effect for reducing friction
-
- 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
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/12—Arrangements for cooling or lubricating parts of the machine
- B23Q11/126—Arrangements for cooling or lubricating parts of the machine for cooling only
- B23Q11/127—Arrangements for cooling or lubricating parts of the machine for cooling only for cooling motors or spindles
-
- 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
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
- B23Q17/0952—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool during machining
- B23Q17/0985—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool during machining by measuring temperature
-
- 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
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/10—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting speed or number of revolutions
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses an electric main shaft. The electric main shaft comprises a housing, a left bearing block, a right bearing block, a left bearing, a medium bearing, a stator, a rotor, a magnetic steel and a sealing part, wherein a storing cavity is formed in the housing; a rotor cooling oil channel, a stator cooling oil channel and an oil returning channel are arranged in the housing; the left bearing block and the right bearing block are arranged at intervals in the storing cavity in the left and right directions, respectively; the left bearing is arranged on the left bearing block, and while the medium bearing is arranged on the medium bearing block; the stator is arranged in the storing cavity; a stator cooling cavity which communicates with the stator cooling oil channel and the oil returning channel is formed in the stator; the rotor is arranged in the storing cavity, and the right end of the rotor extends out from the storing cavity; a mounting cavity is formed in the rotor; a rotor cooling cavity of which the left end is opened is formed in the rotor and communicates with the rotor cooling oil channel and the oil returning channel; the magnetic steel is in interference fit in the mounting cavity; the sealing part sleeves the rotor and is propped to the wall of the storing cavity as well as being adjacent to the right end of the storing cavity. The electric main shaft has the advantages of being fast, high in precision, large in power, and small in size.
Description
Technical field
The present invention relates to a kind of electro spindle of ultrahigh speed high-precision high-power.
Background technology
With social development, high speed machining develops rapidly, and various high precision machine tools, Digit Control Machine Tool become current dress
Standby manufacturing strategic industry, the working (machining) efficiency of lathe and its machining accuracy are increasingly paid close attention to by people, and electricity is main at a high speed
Axle is also considered as most crucial part in whole system as assembly most important in High-speed machining simultaneously, becomes measurement and entirely sets
One of main standard of standby index.The electro spindle of main flow cannot meet modern comfort ultraspeed, high-precision in the market
Degree, powerful requirement.
Content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.For this reason, the present invention carries
Go out a kind of electro spindle with ultrahigh speed high-precision high-power and small volume.
Electro spindle according to embodiments of the present invention includes：Shell, described inside the shell has accommodating chamber, the right side of described accommodating chamber
End is opened wide, and wherein said inside the shell is provided with rotor cooling oil road, stator cooling oil duct and back oil road；Left shaft holder and middle (center) bearing
Seat, described left shaft holder and described bottom bracket are located at described receiving intracavity in left-right direction at interval；Left bearing and axis
Hold, described left bearing is located on described left shaft holder, and described middle (center) bearing is located on described bottom bracket；Stator, described stator sets
In described receiving intracavity, described stator is provided with stator cooling chamber, described stator cooling chamber and described stator cooling oil duct and institute
State back oil road connection；Rotor, described rotor is located at described receiving intracavity and described accommodating chamber, institute are stretched out in the right part of described rotor
State rotor to pass through described stator and be rotatably provided on described left bearing and described middle (center) bearing, in wherein said rotor, there is peace
It behave affectedly, described rotor is provided with the rotor cooling chamber that left end opens wide, described rotor cooling chamber and described rotor cooling oil road and institute
State back oil road connection；Magnet steel, described magnet steel is interference fitted in described installation intracavity；And sealing member, described sealing member sheathing is in institute
State on rotor and be resisted against on the wall of described accommodating chamber, described sealing member is adjacent to the right-hand member of described accommodating chamber.
Electro spindle according to embodiments of the present invention has the advantages that ultrahigh speed high-precision high-power and small volume.
In addition, electro spindle according to the above embodiment of the present invention can also have the technical characteristic adding as follows：
According to one embodiment of present invention, described electro spindle further includes auxiliary support apparatus, described Auxiliary support
Device includes：Right axle bearing, described right axle bearing is located at the described right-hand member accommodating intracavity and neighbouring described accommodating chamber；And right axle
Hold, described right bearing is located in described right axle bearing, and wherein said rotor is rotatably provided on described right bearing.
According to one embodiment of present invention, described electro spindle further includes：First preloading spring, described first pretension
One end of spring is connected with described right bearing and the other end is connected with the wall of described accommodating chamber, and described first preloading spring is in pressure
Contracting state；With the second preloading spring, one end of described second preloading spring is connected with described left bearing and the other end and described appearance
Receive chamber wall be connected, described second preloading spring is in compressive state.
According to one embodiment of present invention, described sealing member is graphite seal.
According to one embodiment of present invention, described electro spindle further includes：Stator temperature sensor, described stator temperature
Degree sensor is located on described stator；Middle (center) bearing temperature sensor, described middle (center) bearing temperature sensor is located on described middle (center) bearing；
And alarm device, described alarm device and each of described stator temperature sensor and described middle (center) bearing temperature sensor phase
Even to be reported to the police according to the detected value of described stator temperature sensor and the detected value of described middle (center) bearing temperature sensor.
According to one embodiment of present invention, described electro spindle further includes：Test the speed magnet steel, and the described magnet steel that tests the speed is located at
On described rotor；Speed probe, described speed probe is located at described receiving intracavity, and described speed probe is tested the speed with described
Magnet steel coordinates；Multiple vibrating sensors, multiple described vibrating sensors set on the housing at interval；And alarm device,
Each of described alarm device and multiple described vibrating sensors are connected so that the inspection according to each described vibrating sensor
Measured value is reported to the police.
According to one embodiment of present invention, described stator cooling chamber coils curl.
According to one embodiment of present invention, the outer peripheral face of the right part of described rotor is formed with multiple outer step portions, described
The perisporium of the right part of rotor cooling chamber is formed with multiple interior stage portion, multiple described outer step portions and multiple described interior stage portion one
One relatively.
According to one embodiment of present invention, the inner peripheral surface of described bottom bracket is provided with oil storage tank, and described oil storage tank leads to
Cross connection oil duct to connect with described stator cooling oil duct.
According to one embodiment of present invention, described inside the shell is provided with middle (center) bearing and stator coil cooling oil duct, described in
Bearing and stator coil cooling oil duct are connected with described stator cooling oil duct by described connection oil duct, wherein said middle (center) bearing with
Stator coil cooling oil duct has the first outlet relative with described middle (center) bearing and relative with the stator coil of described stator
Second outlet.
According to one embodiment of present invention, described inside the shell is provided with left bearing cooling oil duct and right bearing cooling oil duct,
Described left bearing cooling oil duct is connected with described stator cooling oil duct, the outlet of described left bearing cooling oil duct and described left bearing
Relatively, described right bearing cooling oil duct is connected with described stator cooling oil duct by described connection oil duct, described right bearing cooling
The outlet of oil duct is relative with described right bearing.
According to one embodiment of present invention, the left surface of described shell is provided with and described rotor cooling oil road and described
The passage of at least one of stator cooling oil duct connection.
Brief description
Fig. 1 is the side view of electro spindle according to embodiments of the present invention；
Fig. 2 is the sectional view along A-A direction of Fig. 1；
Fig. 3 is the enlarged drawing in the B region in Fig. 2；
Fig. 4 is the enlarged drawing in the C region in Fig. 2；
Fig. 5 is the enlarged drawing in the D region in Fig. 2.
Specific embodiment
Embodiments of the invention are described below in detail, the example of described embodiment is shown in the drawings.Below with reference to
The embodiment of Description of Drawings is exemplary it is intended to be used for explaining the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings electro spindle 10 according to embodiments of the present invention is described.As Figure 1-Figure 5, real according to the present invention
The electro spindle 10 applying example includes shell 101, left shaft holder 1021, bottom bracket 1022, left bearing 1024, middle (center) bearing 1025, determines
Son 103, rotor 104, magnet steel 105 and sealing member 106.
There is in shell 101 accommodating chamber 1011, the right-hand member of accommodating chamber 1011 opens wide.Wherein, it is provided with rotor in shell 101 cold
But oil duct 1012, stator cooling oil duct 1013 and back oil road 1014.Left shaft holder 1021 and bottom bracket 1022 are in left-right direction
It is located at interval in accommodating chamber 1011, left bearing is located on left shaft holder 1021, and middle (center) bearing is located on bottom bracket 1022.
Stator 103 is located in accommodating chamber 1011, and stator 103 is provided with stator cooling chamber 1031, stator cooling chamber 1031 with
Stator cooling oil duct 1013 connects with back oil road 1014.
Rotor 104 is located in accommodating chamber 1011, and accommodating chamber 1011 is stretched out in the right part of rotor 104, and rotor 104 passes through fixed
Son 103, and rotor 104 is rotatably provided on left bearing 1024 and middle (center) bearing 1025.Wherein, in rotor 104, there is installation cavity,
Rotor 104 is provided with the rotor cooling chamber 1041 that left end opens wide, rotor cooling chamber 1041 and rotor cooling oil road 1012 and oil return
Road 1014 connects.Magnet steel 105 is interference fitted in this installation intracavity.Sealing member 106 is sleeved on rotor 104, and sealing member 106 supports
Lean against on the wall of accommodating chamber 1011, sealing member 106 is adjacent to the right-hand member of accommodating chamber 1011.
Electro spindle 10 according to embodiments of the present invention passes through to arrange installation cavity and by magnet steel 105 with interference rotor 104 in
Cooperation, in this installation intracavity, thus the volume of electro spindle 10 not only can greatly be reduced, is saved big quantity space, is made electro spindle 10
It is applied to the occasion limited by spatial volume, and can reduce because of magnetic produced by the unsymmetry of the magnetic structure of rotor 104
Resistive torque, is favorably improved overload capacity and the power density of electro spindle 10, and is easy to speedup, effectively reduces magnetic leakage factor,
The integrity of effective protection magnet.
And, electro spindle 10 according to embodiments of the present invention passes through setting rotor cooling oil road 1012 He in shell 101
Stator cooling oil duct 1013, thus the volume of electro spindle 10 not only can be reduced further, saves big quantity space, makes electro spindle 10
It is applied to the occasion limited by spatial volume, and using mist of oil, the bearing ball of electro spindle 10 can be cooled down, make electric master
The bearing of axle 10 will not work all the time at a higher temperature it is ensured that the long-time high-accuracy stable of electro spindle 10 works.Using oil
Mist is electro spindle 10 system lubrication, not only ensures that each position of electro spindle 10 neither lacks lubricating oil, again will not be because of lubricating oil
Excessively cause bigger temperature rise, and contaminated with oil mist can be down to minimum.
Therefore, electro spindle 10 according to embodiments of the present invention has the advantages that ultrahigh speed high-precision high-power and small volume.
Ultrahigh speed high-precision high-power electro spindle 10 according to embodiments of the present invention exactly caters to the market demand and develops
Novel electric spindle.From the point of view of this driven mode of electro spindle 10, high-speed electric main shaft 10 have compact conformation, the range of speeds wide,
Transmission inertia is little, fast response time, dynamic characteristic are good, add (subtracting) speed and determine the quickly accurate, using vector controlled realization of angle
The advantages of infinitely variable speeds.From the point of view of electro spindle 10 self character, electro spindle 10 has that structure is simple, high-speed high-power, low speed are big
Moment of torsion, rotating speed are high, rigidity is high, be easy to the advantages of standardization, modularity, reliable in quality, small volume.
Wherein, electro spindle 10 whole (machine) body dynamic balancing carries load vibratory output to be not more than 9mm/s in maximum (top) speed 60000rpm, is situated between
In close to the G6.3 level in dynamic balance grade.
Electro spindle 10 according to embodiments of the present invention be suitable to special occasions use, be particularly well-suited to high-precision drilling milling machine,
Various high-precision numerical control machines, high accuracy engraving special purpose machine tool, high-precision grinder and other need ultrahigh rotating speed high accuracy big
Lathe etc. is rolled in power occasion lathe, high speed centrifuge, rotation.Electro spindle 10 can also use in Aero-Space industry and some spies
Very need the field using ultrahigh speed high-precision high-power electro spindle.
As shown in Figure 2 and Figure 5, in some embodiments of the invention, electro spindle 10 further includes auxiliary support apparatus,
This auxiliary support apparatus includes right axle bearing 1023 and right bearing 1026.Right axle bearing 1023 is located in accommodating chamber 1011, and right
Bearing block 1023 is adjacent to the right-hand member of accommodating chamber 1011.Right bearing 1026 is located in right axle bearing 1023.In other words, right bearing 1026
The right-hand member of neighbouring accommodating chamber 1011.Wherein, rotor 104 is rotatably provided on right bearing 1026.That is, rotor 104 can
Rotatably it is located on left bearing 1024, middle (center) bearing 1025 and right bearing 1026.
Can revolve by the right axle bearing 1023 of the right-hand member of the neighbouring accommodating chamber 1011 of setting and right bearing 1026 and by rotor 104
Be located on right bearing 1026 with turning, such that it is able to greatly shorten the outfan of rotor 104 to the strong point (right bearing 1026) it
Between distance so that greatly reduce electro spindle 10 work when vibration.The critical speed of electro spindle 10 thus can be made much
Exceed the working speed of electro spindle 10, make the electro spindle 10 can be with the work of big load, stationarity.
The right bearing 1026 of electro spindle 10, middle (center) bearing 1025, left bearing 1024 use radial ball bearing, not only can make electricity
Main shaft 10 stable operation in high temperature environments, and can ensure that the precision that electro spindle 10 works in the velocity interval of license.
In a specific example of invention, sealing member 106 can be graphite seal 106.Electricity thus not only can be made
Main shaft 10 smooth working under various adverse circumstances, and left bearing 1024, middle (center) bearing 1025 and right axle can be effectively prevented
Hold 1026 damage, effectively lift the characteristic of electro spindle 10.
Specifically, the dynamic sealing of the front end of electro spindle 10 can select end face graphite grazing.Graphite grazing has resistance to
Soda acid, corrosion-resistant, high temperature resistant, non-oxidizability is strong, the low characteristic of resistance, and here use can make electro spindle 10 in various severe rings
Smooth working under border, such that it is able to effectively prevent the damage of bearing, effectively lifts the characteristic of electro spindle 10.
As shown in Figure 2 and Figure 5, electro spindle 10 further includes the first preloading spring 1071, the first preloading spring 1071
One end is contacted with right bearing 1026, and the other end of the first preloading spring 1071 is contacted with the wall of accommodating chamber 1011, the first pretension
Spring 1071 is in compressive state.By arranging the first preloading spring 1071, such that it is able to provide pretightning force for right bearing 1026,
Prevent right bearing 1026 from occurring stuck because temperature raises it is ensured that the long-time stable of electro spindle 10 works.
As shown in Figures 2 and 3, electro spindle 10 further includes the second preloading spring 1072, the second preloading spring 1072
One end is contacted with left bearing 1024, and the other end of the second preloading spring 1072 is contacted with the wall of accommodating chamber 1011, the second pretension
Spring 1072 is in compressive state.By arranging the second preloading spring 1072, such that it is able to provide pretightning force for left bearing 1024,
Prevent left bearing 1024 from occurring stuck because temperature raises it is ensured that the long-time stable of electro spindle 10 works.
In one embodiment of the invention, as shown in Fig. 2 electro spindle 10 further includes stator temperature sensor
1081st, middle (center) bearing temperature sensor 1082 and alarm device (not shown).Stator temperature sensor 1081 is located at stator 103
On, middle (center) bearing temperature sensor 1082 is located on middle (center) bearing 1025.This alarm device and stator temperature sensor 1081 and axis
Hold each of temperature sensor 1082 to be connected so that according to the detected value of stator temperature sensor 1081 and middle (center) bearing temperature
The detected value of sensor 1082 is reported to the police.
Wherein, stator temperature sensor 1081 can be with the temperature of real-time monitoring stator coil, and it is fixed under various operating modes to prevent
Subcoil burns out because temperature is too high, by transmission and feedback, the automatic alarm after temperature of stator coil exceedes predetermined value.In
Bearing temperature sensor 1082 can prevent the temperature of middle (center) bearing 1025 under various operating modes with the temperature of real-time monitoring middle (center) bearing 1025
Spend height and burn out, by transmission and feedback, the automatic alarm after temperature of middle (center) bearing 1025 exceedes predetermined value.
By arranging stator temperature sensor 1081 and middle (center) bearing temperature sensor 1082, such that it is able to prevent electro spindle 10
Because of oil circuit blocking or because other reasonses lead to electro spindle 10 interior temperature to spend height, thus can ensure that electro spindle 10 will not be super
Cross and work under predetermined temperature, greatly improve electro spindle 10 service life.
As shown in Fig. 2 electro spindle 10 further includes test the speed magnet steel 1084, speed probe 1085, multiple vibrating sensing
Device 1086 and alarm device.The magnet steel 1084 that tests the speed is located on rotor 104, and speed probe 1085 is located in accommodating chamber 1011, turns
Fast sensor 1085 is coordinated with the magnet steel 1084 that tests the speed.Multiple vibrating sensors 1086 are located on shell 101 at interval.This warning
Each of device and multiple vibrating sensors 1086 are connected to be reported to the police according to the detected value of each vibrating sensor 1086.
Specifically, speed probe 1085 can be transmitted with the actual speed of real-time monitoring rotor 104 and rotary speed data
To control software, provide precise information for state during analysis electro spindle 10 different rotating speeds.This data can be used for other use
Way is analyzed.
Multiple vibrating sensors 1086 are used for the vibration state of real-time monitoring electro spindle 10, when the vibration values of electro spindle 10 surpass
Cross automatic alarm after predetermined value, admirably ensure electro spindle 10 precision operationally.By by multiple vibrating sensors 1086
It is arranged in the diverse location of electro spindle 10, the working condition of real-time monitoring electro spindle 10, Monitoring Data is automatically transmitted to simultaneously
Automatically controlled software, automatically analyzes and record data, if the vibration values of vibrating sensor 1086 exceed predetermined value, autoalarm will
Can report to the police and point out user to check electro spindle 10.Thus can save, for user, the working condition being largely used to check electro spindle 10
Time, greatly improve operating accuracy and the efficiency of electro spindle 10, a people can also be made simultaneously to manipulate multiple devices.
As shown in Fig. 2 in an example of the present invention, the inner peripheral surface of bottom bracket 1022 is provided with oil storage tank 1027,
Oil storage tank 1027 is passed through connection oil duct 1016 and is connected with stator cooling oil duct 1013.Lubricating oil passes through stator cooling oil duct 1013 He
Connect oil duct 1016 to enter in oil storage tank 1027, and full of the space between middle (center) bearing 1025 and bottom bracket 1022, thus
Form oil film vibration absorber.This oil film vibration absorber not only can ensure to lead to turn because of factors such as electro spindle 10 practical set errors
The resistance of son 104 increases and affects rotor 104 and rotate, and can effectively reduce the vibration of electro spindle 10 and smoothly cross over
Marginal value.
Advantageously, as shown in Fig. 2 stator cooling chamber 1031 coils curl.Thus can effectively, fully to fixed
Son 103 is cooled down.Wherein, enter into the lubricating oil in stator cooling chamber 1031 stator 103 can be cooled down.Lubricating oil
After circulation, temperature rises, and the lubricating oil after intensification returns to lubricating system by back oil road 1014, and passes through this lubricating system
Cooling circulation after, be re-introduced in stator cooling chamber 1031.So iterative cycles are reached for the effect of electro spindle 10 cooling.
As shown in figure 3, in some examples of the present invention, the outer peripheral face of the right part of rotor 104 is formed with multiple outer step
Portion 1042, the perisporium of the right part of rotor cooling chamber 1041 is formed with multiple interior stage portion 1043, multiple outer step portions 1042 with many
Individual interior stage portion 1043 is one by one relatively.
In other words, the quantity of interior stage portion 1043 can be equal to the quantity in outer step portion 1042, and an interior stage portion
1043 can be relative with an outer step portion 1042.The structure of electro spindle 10 thus can be made more reasonable.
Wherein, entering into the lubricating oil in rotor cooling chamber 1041 can be to rotor 104 and the magnet steel being located in rotor 104
105 are cooled down.Lubricating oil temperature after circulation rises, and the lubricating oil after intensification returns to lube system by back oil road 1014
System, and after the cooling of this lubricating system circulates, be re-introduced in rotor cooling chamber 1041.So iterative cycles are reached for
The effect of electro spindle 10 cooling.
As shown in Figure 2 and Figure 4, it is provided with middle (center) bearing and stator coil cooling oil duct 1015, middle (center) bearing and stator in shell 101
Coil cooling oil duct 1015 is passed through connection oil duct 1016 and is connected with stator cooling oil duct 1013.Wherein, middle (center) bearing and stator coil
Cooling oil duct 1015 has the first outlet 10151 relative with middle (center) bearing 1025 and relative with the stator coil of stator 103
Second outlet 10152.The lubricating oil being sprayed by first outlet 10151 and mist of oil are cooled down to middle (center) bearing 1025, by
The lubricating oil of two outlet 10152 ejection cools down to the stator coil of stator 103.
The size of each of first outlet 10151 and second outlet 10152 tapers into along oil flow direction
So that formation atomizer, can be atomized when the lubricating oil having certain pressure flows to first outlet 10151 and second outlet 10152 with
Just form mist of oil, then this mist of oil is sprayed on and is cooled down on middle (center) bearing 1025 and the stator coil of stator 103.
As shown in Fig. 2, Fig. 3 and Fig. 5, in an example of the present invention, in shell 101, it is provided with left bearing cooling oil duct
1017 and right bearing cooling oil duct 1018.Left bearing cooling oil duct 1017 is connected with stator cooling oil duct 1013, and left bearing cools down
The outlet of oil duct 1017 relative with left bearing 1024 to cool down to left bearing 1024, right bearing cooling oil duct 1018 passes through
Connect oil duct 1016 connect with stator cooling oil duct 1013, the outlet of right bearing cooling oil duct 1018 relative with right bearing 1026 with
Just right bearing 1026 is cooled down.
The size of the exit portion of left bearing cooling oil duct 1017 tapers into along oil flow direction to form spray
Oil nozzle, can be atomized when the lubricating oil having certain pressure flows to the exit portion of left bearing cooling oil duct 1017 to form oil
Mist, then this mist of oil be sprayed on the surface of the bearing ball of left bearing 1024 and cooled down.Left bearing cooling oil duct 1017 has three
Individual exit portion, these three exit portion are uniformly distributed along the circumference of left bearing 1024.
The size of the exit portion of right bearing cooling oil duct 1018 tapers into along oil flow direction to form spray
Oil nozzle, can be atomized when the lubricating oil having certain pressure flows to the exit portion of right bearing cooling oil duct 1018 to form oil
Mist, then this mist of oil be sprayed on the surface of the bearing ball of right bearing 1026 and cooled down.Right bearing cooling oil duct 1018 has three
Individual exit portion, these three exit portion are uniformly distributed along the circumference of right bearing 1026.
Advantageously, rotor cooling oil road 1012, stator cooling oil duct 1013, back oil road 1014, middle (center) bearing and stator coil
Cooling oil duct 1015, connect oil duct 1016, left bearing cooling oil duct 1017, right bearing cooling oil duct 1018, oil storage tank 1027, fixed
Sub- cooling chamber 1031 and rotor cooling chamber 1041 communicate with each other.
Using mist of oil for left bearing 1024, middle (center) bearing 1025 and right bearing 1026 ball cooled down it is ensured that electricity
The bearing of main shaft 10 will not work all the time at a higher temperature, such that it is able to enable the long-time high-accuracy stable of electro spindle 10
Work.Because electro spindle 10 is inevitably generated substantial amounts of heat in the course of the work, if can not cool in time, meeting exists
Rapidly electro spindle 10 bearing is burnt out in the shorter time.Lubricated for electro spindle 10 using mist of oil, not only ensure each of bearing
Position neither lacks lubricating oil, will not cause bigger temperature rise because lubricating oil is excessive again, and can be down to pollution minimum.
Electro spindle 10 passes through at its tail rotor bearing, opens helicla flute oil duct on shell, not only for bearing lubrication, cold
But, and cool down it is ensured that the temperature rise control of electro spindle 10 is suitable for the magnet steel 105 in stator coil, rotor 104, rotor 104
In the range of, thus ensureing that the long-time high-accuracy stable of electro spindle 10 works.
Meanwhile, the bearing bore spill port of the bearing bore spill port of left bearing 1024 and right bearing 1026 is each individually and oil return
Pump be connected it is ensured that each bearing can be good lubrication, the bearing bore passage of left bearing 1024 and the axle of right bearing 1026
Hold chamber passage to be connected, and communicate with air it is ensured that the heat of electro spindle 10 inner chamber is discharged rapidly, preferably protect electro spindle
10.
As shown in figure 1, the left surface of shell 101 be provided with rotor cooling oil road 1012 and stator cooling oil duct 1013 in
At least one connection passage 1019.After lubricating oil enters in electro spindle 10, Oil-gas Separation can be produced, wherein gas can
To be discharged by passage 1019, take away substantial amounts of heat, thus ensureing that electro spindle 10 all the time will not work at a higher temperature simultaneously
Make, long-time high-accuracy stable work.
Advantageously, passage 1019 is located at the top of electro spindle 10.
Electro spindle 10 according to embodiments of the present invention has less overall dimensions, consequently facilitating transport, installation and storage,
It is more convenient for using on multiple different equipment.For example, the outside dimension of electro spindle 10 is 140 millimeters, and total length is 402 millimeters,
Power can reach 15 kilowatts.Specifically, electro spindle 10 can adopt the electrical driving technique of ac variable frequency speed regulation and vector controlled,
Meet the high-power of electro spindle 10, the output of wide speed range speed governing.
The rotating speed of electro spindle 10 according to embodiments of the present invention can realize infinitely variable speeds between 0-60000r/min, full
Foot smooth working under different occasions, different rotating speeds, different operating mode.The material of uniqueness, the selection of bearing, at bearing outer ring design
From oil film vibration absorber it is ensured that bearing is in high speed, high temperature, big vibration and Trans-critical cycle rotating speed, extremely complex and harsh operating mode
Lower safe and reliable operation.High-power it is ensured that electro spindle 10 transmits out bigger torque, thus ensureing that electro spindle 10 can use
More wider occasions.
Using high accuracy high-quality ball bearing it is ensured that the output of electro spindle 10 high-precision rotary, big load, improve electricity simultaneously
The service life of main shaft 10.
In describing the invention it is to be understood that term " " center ", " longitudinal ", " horizontal ", " length ", " width ",
" thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", " up time
The orientation of instruction such as pin ", " counterclockwise ", " axial ", " radially ", " circumferential " or position relationship be based on orientation shown in the drawings or
Position relationship, is for only for ease of the description present invention and simplifies description, rather than the device of instruction or hint indication or element must
Must have specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or hint relative importance
Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In describing the invention, " multiple " are meant that at least two, such as two, three
Individual etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；Can be that machinery connects
Connect or electrically connect or can communicate each other；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, permissible
It is the connection of two element internals or the interaction relationship of two elements, limit unless otherwise clear and definite.For this area
For those of ordinary skill, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score permissible
It is the first and second feature directly contacts, or the first and second features pass through intermediary mediate contact.And, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy describing with reference to this embodiment or example
Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be in office
Combine in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area
The feature of the different embodiments described in this specification or example and different embodiment or example can be tied by art personnel
Close and combine.
Although embodiments of the invention have been shown and described above it is to be understood that above-described embodiment is example
Property it is impossible to be interpreted as limitation of the present invention, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (12)
1. a kind of electro spindle is it is characterised in that include：
Shell, described inside the shell has accommodating chamber, and the right-hand member of described accommodating chamber opens wide, and wherein said inside the shell is provided with rotor cooling
Oil duct, stator cooling oil duct and back oil road；
Left shaft holder and bottom bracket, described left shaft holder and described bottom bracket are located at described appearance in left-right direction at interval
Receive intracavity；
Left bearing and middle (center) bearing, described left bearing is located on described left shaft holder, and described middle (center) bearing is located on described bottom bracket；
Stator, described stator is located at described receiving intracavity, and described stator is provided with stator cooling chamber, described stator cooling chamber and institute
State stator cooling oil duct to connect with described back oil road；
Rotor, described rotor is located at described receiving intracavity and described accommodating chamber is stretched out in the right part of described rotor, and described rotor is worn
Cross described stator and be rotatably provided on described left bearing and described middle (center) bearing, there is in wherein said rotor installation cavity, institute
State rotor and be provided with the rotor cooling chamber that left end opens wide, described rotor cooling chamber and described rotor cooling oil road and described back oil road
Connection；
Magnet steel, described magnet steel is interference fitted in described installation intracavity；With
Sealing member, described sealing member sheathing on described rotor and be resisted against described accommodating chamber wall on, described sealing member is neighbouring
The right-hand member of described accommodating chamber.
2. electro spindle according to claim 1 it is characterised in that further including auxiliary support apparatus, prop up by described auxiliary
Support arrangement includes：
Right axle bearing, described right axle bearing is located at the described right-hand member accommodating intracavity and neighbouring described accommodating chamber；With
Right bearing, described right bearing is located in described right axle bearing, and wherein said rotor is rotatably provided on described right bearing.
3. electro spindle according to claim 2 is it is characterised in that further include：
First preloading spring, one end of described first preloading spring is connected with described right bearing and the other end and described accommodating chamber
Wall is connected, and described first preloading spring is in compressive state；With
Second preloading spring, one end of described second preloading spring is connected with described left bearing and the other end and described accommodating chamber
Wall is connected, and described second preloading spring is in compressive state.
4. electro spindle according to claim 1 is it is characterised in that described sealing member is graphite seal.
5. electro spindle according to claim 1 is it is characterised in that further include
Stator temperature sensor, described stator temperature sensor is located on described stator；
Middle (center) bearing temperature sensor, described middle (center) bearing temperature sensor is located on described middle (center) bearing；With
Alarm device, described alarm device and each of described stator temperature sensor and described middle (center) bearing temperature sensor
It is connected to be reported to the police according to the detected value of described stator temperature sensor and the detected value of described middle (center) bearing temperature sensor.
6. electro spindle according to claim 1 is it is characterised in that further include：
Test the speed magnet steel, and the described magnet steel that tests the speed is located on described rotor；
Speed probe, described speed probe is located at described receiving intracavity, and described speed probe is joined with the described magnet steel that tests the speed
Close；
Multiple vibrating sensors, multiple described vibrating sensors set on the housing at interval；With
Alarm device, each of described alarm device and multiple described vibrating sensors are connected to shake according to each
The detected value of dynamic sensor is reported to the police.
7. the electro spindle according to any one of claim 1-6 is it is characterised in that described stator cooling chamber is coiled into spiral
Shape.
8. electro spindle according to claim 1 is it is characterised in that the outer peripheral face of the right part of described rotor is formed with outside multiple
Stage portion, the perisporium of the right part of described rotor cooling chamber is formed with multiple interior stage portion, multiple described outer step portions and multiple institutes
State interior stage portion one by one relatively.
9. electro spindle according to claim 1 is it is characterised in that the inner peripheral surface of described bottom bracket is provided with oil storage tank,
Described oil storage tank is passed through connection oil duct and is connected with described stator cooling oil duct.
10. electro spindle according to claim 1 is it is characterised in that described inside the shell is provided with middle (center) bearing and stator coil is cold
But oil duct, described middle (center) bearing and stator coil cooling oil duct are connected with described stator cooling oil duct by connecting oil duct, wherein institute
State middle (center) bearing, with stator coil cooling oil duct, there is the first outlet relative with described middle (center) bearing and the stator with described stator
The relative second outlet of coil.
11. electro spindle according to claim 2 are it is characterised in that described inside the shell is provided with left bearing cooling oil duct and the right side
Bearing cooling oil duct, described left bearing cooling oil duct is connected with described stator cooling oil duct, the going out of described left bearing cooling oil duct
Mouth is relative with described left bearing, and described right bearing cooling oil duct is passed through connection oil duct and connected with described stator cooling oil duct, described
The outlet of right bearing cooling oil duct is relative with described right bearing.
12. electro spindle according to claim 1 are it is characterised in that the left surface of described shell is provided with and described rotor
The passage that at least one of cooling oil duct and described stator cooling oil duct connect.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410696934.3A CN104525980B (en) | 2014-11-26 | 2014-11-26 | Ultrahigh-speed, high-precision and large-power electric main shaft |
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| CN201410696934.3A CN104525980B (en) | 2014-11-26 | 2014-11-26 | Ultrahigh-speed, high-precision and large-power electric main shaft |
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| CN104525980B true CN104525980B (en) | 2017-02-22 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP3322556A1 (en) * | 2015-07-14 | 2018-05-23 | Franz Kessler GmbH | Machine tool unit with a tool clamping device |
| DE102016001745B4 (en) * | 2016-02-10 | 2021-03-04 | Michael Weinig Ag | Woodworking tool spindle and moulder with such a tool spindle |
| CN107538301A (en) * | 2017-09-01 | 2018-01-05 | 深圳市华星光电技术有限公司 | Panel edger unit and its dynamic balancing method for measurement |
| CN107891158A (en) * | 2017-11-24 | 2018-04-10 | 广州市昊志机电股份有限公司 | A kind of ultrasonic vibration high-speed electric main shaft |
| CN110238700B (en) * | 2019-06-29 | 2021-06-25 | 天津大学 | Device for measuring temperature of machine tool spindle in milling process in real time |
| CN111822734B (en) * | 2020-07-06 | 2022-07-08 | 南京航空航天大学 | Electric spindle |
| CN112139984A (en) * | 2020-09-27 | 2020-12-29 | 高明春 | Intelligent cooling liquid control device capable of adjusting injection amount according to rotating speed |
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| CN2664261Y (en) * | 2003-07-27 | 2004-12-15 | 北京三易同创新技术有限公司 | Permanent-magnet synchronous machine |
| CN100396437C (en) * | 2005-10-26 | 2008-06-25 | 广东工业大学 | High speed high rigidity composite multibase gas static pressure bearing electric main shaft |
| CN201075803Y (en) * | 2007-08-31 | 2008-06-18 | 西安合升机电科技有限公司 | Built-in type permanent magnetism synchronizing spindle motor |
| CN101527485A (en) * | 2009-04-16 | 2009-09-09 | 哈尔滨工业大学 | Large-powder low-torque pulsation permanent magnet synchronous motor for electro-spindle |
| JP2014017980A (en) * | 2012-07-09 | 2014-01-30 | Ihi Corp | Rotary machine |
| CN103117633A (en) * | 2013-03-22 | 2013-05-22 | 湖南大学 | High-speed permanent magnet synchronous motor and assembly method thereof |
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