CN110193611A - A kind of mixing bearing self-balancing electrical spindle for machine tool structure and its control method - Google Patents
A kind of mixing bearing self-balancing electrical spindle for machine tool structure and its control method Download PDFInfo
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- CN110193611A CN110193611A CN201910439046.6A CN201910439046A CN110193611A CN 110193611 A CN110193611 A CN 110193611A CN 201910439046 A CN201910439046 A CN 201910439046A CN 110193611 A CN110193611 A CN 110193611A
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- main shaft
- bearing
- supporting member
- shaft housing
- machine tool
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- 230000008878 coupling Effects 0.000 claims abstract description 17
- 238000010168 coupling process Methods 0.000 claims abstract description 17
- 238000005859 coupling reaction Methods 0.000 claims abstract description 17
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 238000006073 displacement reaction Methods 0.000 claims description 26
- 238000007667 floating Methods 0.000 claims description 22
- 238000012544 monitoring process Methods 0.000 claims description 15
- 239000000725 suspension Substances 0.000 claims description 11
- 239000000523 sample Substances 0.000 claims description 7
- 238000012360 testing method Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 3
- 239000000446 fuel Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
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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
Abstract
The present invention provides a kind of mixing bearing self-balancing electrical spindle for machine tool structure and its control method, the structure includes main shaft housing, first supporting member of rear end in main shaft housing is set, main shaft body in main shaft housing is set, the second supporting member that main shaft housing front end is set and is matched with main shaft body, it is arranged in main shaft housing and is located at assistant supporting mechanism of the second supporting member rear end for automatic adjustment, and is arranged in main shaft housing for controlling the control system of assistant supporting mechanism；Stable and reliable operation of the present invention; both the balance Control Scheme of main shaft may be implemented; also avoid the phenomenon that electromagnetic coupling causes control difficult the structure; electromagnetic coupling caused by very good solution is interfered as the multiple electromagnetic bearings of the prior art; the sufficiently complex phenomenon so that high-speed main spindle structure control is got up; when solving electromagnetic bearing starting simultaneously, shutting down or break down, there is probabilistic freely falling body phenomenon in main shaft, and main shaft is caused to hit damage problem.
Description
Technical field
The present invention relates to high-speed precise machine tool component technology fields, and in particular to a kind of mixing bearing self-balancing machine tool electric master
Axle construction and its control method.
Background technique
High-speed precision digital control lathe is one of technical foundation and developing direction of equipment manufacture, and the performance of high-speed main spindle is
Determine one of the critical component of working performance of high-speed precision digital control lathe.And realize the crucial skill of main shaft high speed and precise treatment
Art is supporting technology, and the dynamic property of main shaft or even complete machine tool can be improved in good rigidity and the bearing damped；Currently, high speed
Accurate main shaft supporting technology mainly uses ceramic bearing, dynamic and hydrostatic bearing or magnetic suspension bearing.The high speed performance of magnetic suspension bearing
Good, precision is high, and diagnosis and on-line monitoring easy to accomplish were once considered as the unique selection of high-speed machine tool main shaft bearing；However mesh
The relatively common five degree of freedom main shaft magnetic suspension bearing technology of preceding research, there is more serious coupling phenomenons, this is by magnetic
What the working principle of suspension bearing itself was determined.Magnetic suspension rotor is in actual work, and there is magnetic couplings, couple of force conjunction, power
Square coupling, axial bearing are closed with the couple of force of transverse bearing, the signal between displacement sensor couples, torque coupling.Wherein couple of force close,
The coupling of torque, torque coupling are mutually related again；The coupling and couple of force conjunction, the coupling of torque, torque coupling of sensor signal
It closes and has an impact again；Therefore, how decoupling one of the Main way for having become researcher, while the high speed rotation of rotor make turn
Axis generates gyroscopic effect, and each channel that can be controlled respectively originally produces coupling, causes system as Electro-hydraulic Proportional System, and
Magnetic suspension bearing starting and shut down (perhaps disorderly closedown) when rotor freely falling body mode (fall or tiltedly fall in parallel) no
It determines, also result in the reliability decrease of magnetic-suspension main-shaft and increases the complexity of control system.
Summary of the invention
In view of this, the present invention provides a kind of mixing bearing self-balancing electrical spindle for machine tool structure, and propose a kind of master
The control method of axle construction, the system is reliable and stable, can significantly improve the speed of mainshaft, while also avoiding electromagnetic coupling to this
The phenomenon that structure causes control difficult, can be widely applied for the occasion for needing high speed degree machine tool chief axis and middle high precision numerical control
In lathe.
To achieve the above object, the present invention provides a kind of mixing bearing self-balancing electrical spindle for machine tool structure, including main shaft shell
The first supporting member of rear end in the main shaft housing is arranged in body, and the main shaft body in the main shaft housing is arranged in, and setting exists
The main shaft housing front end and the second supporting member matched with the main shaft body are arranged in the main shaft housing and are located at
Assistant supporting mechanism of second supporting member rear end for automatic adjustment, and be arranged in the main shaft housing for controlling
The control system of the assistant supporting mechanism；
The main shaft body is multistage multi-diameter shaft, the band conical surface matched including at least one with the assistant supporting mechanism
Axle journal, a rear end axle journal matched with the first supporting member, a preceding end-journal matched with second supporting member.
The assistant supporting mechanism includes the fixing sleeve for being arranged on preceding end-journal and matching with the main shaft housing, if
Multiple elastic components on the fixing sleeve are set, are matched with the band conical surface axle journal and one side and multiple elastic component phases
The auxiliary bearing of connection, auxiliary bearing inner ring surface setting and the fixed cone surface cover matched with conical surface axle journal are described
The multiple floating support parts matched with the main shaft housing inner wall are set on auxiliary bearing another side.
Multiple floating support parts are arranged along the circumferencial direction of the auxiliary bearing；
The floating support part is the elastic block rubber of elastic bellows or intermediate setting air bag.
The elastic component is spring or elastic rubber column.
The fixing sleeve is copper sheathing or ceramic jacket made of the magnetic class material.
The main shaft housing is two-stage stepped hole, and the internal diameter of the first stepped hole is less than the internal diameter of the second stepped hole, described
First supporting member is arranged in first stepped hole.
First supporting member is single-row angular contact ball bearing or double-row angular contact bal bearing.
Second supporting member is that the electromagnetic bearing or permanent magnetism being in contact on the third axle journal and with fixing sleeve is arranged in
Block magnetic suspension bearing.
One end setting of the main shaft housing for compressing the first end cover of the first supporting member, the main shaft housing it is another
The second end cover for compressing second supporting member is arranged in end.
The control system includes being used for through the main shaft housing side wall to floating support part fuel feeding or for compressed air
Pipeline, the adjusting pump on the pipeline is set, be arranged on the pipeline its be located at described air pump for adjusting pump rear portion or
Oil sump is arranged in the second stepped hole for monitoring radial two first displacement sensors with axial direction of main shaft, is arranged in the axis
For monitoring the second displacement sensor of auxiliary bearing axial displacement in set, it is arranged in the second stepped hole for monitoring main shaft sheet
The speed probe of body revolving speed, and for connecting two first displacement sensors, second displacement sensor and revolution speed sensing
The DSP or PLC or computer of device.
A kind of control method of mixing bearing self-balancing electrical spindle for machine tool structure, comprising the following steps:
S1:PLC or computer are initialized, and are powered to the structure and carry out self-test, in the error-free false alarm of self-test
Starting is realized afterwards；
S2: the speed probe for monitoring main shaft body calculates master with displacement transducer signal and according to displacement transducer signal
Shaft body runs amount of unbalance；
If amount of unbalance is larger and is greater than the set value, the electric current by increasing corresponding electromagnetic bearing changes its electromagnetism and inhales
Power carries out amount of unbalance adjustment, and main shaft body is forced to be rotated around its geometry centre of gyration；
S3: after main shaft body running balance, detecting the revolving speed of main shaft body, after revolving speed is greater than the set value, auxiliary bearing
It is out of service under the action of pneumatic/hydraulic coupling, while electromagnetic bearing incision operation；
S4: in main shaft body operational process, displacement transducer signal and signals of rotational speed sensor are detected always, is led
Shaft body does not measure adjustment；
S5: when closing is required, when detecting the speed of mainshaft lower than setting speed, electromagnetic bearing exits work, simultaneously
Auxiliary bearing cuts work.
Further, it when detecting fault-signal in S3, is then directly entered in S5.
Electromagnetic coupling phenomena caused by the present invention is interfered for the prior art as multiple electromagnetic bearings, so that high speed
Main axle structure control is got up sufficiently complex, and there are electromagnetic bearing starting or when shutting down, probabilistic freely falling occurs in main shaft
Embody as, therefore the present invention main shaft body one end setting mechanical bearing carry out stiff support so that this structure is in electromagnetic axis
It holds the moment with auxiliary bearing switching, tapered plain bearing avoids the uncertainty of main shaft body certainly automatically into work
By falling bodies phenomenon；And the second supporting member in main shaft housing is set it is electromagnetic bearing, enable this structure high speed operation,
And it realizes main shaft body rigidity and damps adjustable controllable；And the control system being arranged can guarantee that main shaft is being located at low-speed range
Carry out aiding support, it is ensured that the stability of structure, since the present apparatus is auxiliary to realize by the size for controlling floating support part elastic force
The intervention of bearing is helped, so that this structure control becomes very easy and is easy to control.
In addition, the main shaft used in the present invention for multistage multi-diameter shaft, includes at least one and matches with assistant supporting mechanism
The band conical surface axle journal of conjunction, preferably uses circular conical surface, can be realized automatic aligning when auxiliary bearing enters work, force main shaft
The ontology centre of gyration is located in the geometric center lines of main shaft body, reduces the turn error of main shaft body；It is capable of increasing auxiliary
Supporting device and the contact surface with conical surface axle journal, while under the premise of capable of not also increasing the shaft shoulder and main shaft body diameter, mitigate
Suffered frictional force, also mitigates the technical requirements to some materials on contact surface unit area, meanwhile, also it is able to extend
Auxiliary bearing intervenes the distance exited, so that it requires to be lower to the control of floating support part；Certainly arc surface can also be used；It is excellent
Choosing, permanent magnets magnetic bearing and electromagnetic bearing mixing bearing also can be used for electromagnetic bearing in the second supporting member used certainly
Mode, the first supporting member used in pairs use single-row angular contact ball bearing or double-row angular contact bal bearing, can not only
The axial thrust of main shaft, and the moment that can switch in the second supporting member and auxiliary bearing enough can be effectively carried, so that
Main shaft is the cantilever beam structure of one end hard bearing, it is ensured that the stability of the structure reduces gyroscopic effect when main shaft body revolution
It influences；And the assistant supporting mechanism used includes the fixation every magnetic class for being arranged on the axle journal of rear end and matching with main shaft housing
On the one hand elastic component can be arranged in set, the structure on it, on the other hand it, which can also be played, generates electromagnetism to the first supporting member
Isolation, avoid the interference to other components；And the outer ring of auxiliary bearing is set and elastic component is contacted, while also can
It is slided in main shaft housing, in order to guarantee that the lubrication of graphite or lubricating oil can be arranged in the mobile effect of auxiliary bearing on inner wall
Layer, while in order to mitigate elastic component and floating support part by main shaft bring circle peripheral force, the mode of settable featherway into
Round peripheral force is installed and avoided to row guiding；The floating support part of use passes through the size of adjuster elastic force, Lai Shixian asessory shaft
The intervention held with exit；The preferred spring of the elastic component of use, also can be used elastic rubber column certainly.
In addition, the floating support part used is more on the first stepped hole and the second stepped hole junction section to be uniformly arranged on
A elastic bellows are capable of providing axial elastic force, for overcoming mechanical spring force, realizing the entrance of auxiliary bearing and moving back
Out, the elastic block rubber of internal setting air bag also can be used certainly, and the oil/gas pipe by being connected with floating support part carries out
Dynamic controls, and controls the amount of the filling solution such as the gas being filled with into elastic bellows or air bag or hydraulic oil, realizes that dynamic is controlled
System；The second supporting member used is electromagnetic bearing or magnetic suspension bearing；In addition, closed-loop control and monitoring in order to realize this structure
The operating status of spindle rotor, while carrying out the work switching of auxiliary bearing and electromagnetic bearing, can be excellent in the suitable position of axle sleeve
Two displacement sensors of choosing being arranged in the second stepped hole for monitoring main shaft circular runout and the revolving speed of the monitoring speed of mainshaft
Sensor, and sensor signal is connected with the PLC of numerically-controlled machine tool, or is attached with controllers such as computers.
Detailed description of the invention
Fig. 1 is the whole structural schematic diagram of the present invention；
Fig. 2 is the structural schematic diagram of assistant supporting mechanism of the present invention；
Fig. 3 is the structural schematic diagram of main shaft of the present invention；
Fig. 4 is the structural schematic diagram of main shaft housing of the present invention；
Fig. 5 is the structural schematic diagram at floating support part of the present invention；
Fig. 6 is control principle schematic diagram of the present invention.
Fig. 7 be in the present invention spring corrugated pipe it is pneumatic/hydraulic control system；
Fig. 8 is control method flow chart of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
Attached drawing 1-8, the technical solution of the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is this
A part of the embodiment of invention, instead of all the embodiments.Based on described the embodiment of the present invention, the common skill in this field
Art personnel every other embodiment obtained, shall fall within the protection scope of the present invention.
Embodiment one
As shown in figures 1 to 6: a kind of mixing bearing self-balancing electrical spindle for machine tool structure, including main shaft housing 4 are arranged described
The main shaft body 3 in the main shaft housing 4 is arranged in first supporting member 2 of rear end in main shaft housing 4, is arranged in the main shaft
4 front end of shell and the second supporting member 9 matched with the main shaft body 3 are arranged in the main shaft housing 4 and are located at described
Assistant supporting mechanism of second supporting member, 9 rear end for automatic adjustment, and be arranged in the main shaft housing 4 for controlling institute
State the control system of assistant supporting mechanism；
The main shaft body 4 is multistage multi-diameter shaft, is bored including at least the band that one matches with the assistant supporting mechanism
Face axle journal 302, a rear end axle journal 303 matched with the first supporting member, before one matches with second supporting member
End-journal 301.
The assistant supporting mechanism includes the fixation for being arranged on preceding end-journal 301 and matching with the main shaft housing 4
Set 12, is arranged in multiple elastic components 8 on the fixing sleeve 12, matches with the band conical surface axle journal 302 and one side and more
The auxiliary bearing 13 that a elastic component 8 is connected, 13 inner ring surface of the auxiliary bearing setting and 302 phase of band conical surface axle journal
The fixed cone surface cover 15 of cooperation, setting matches more with 4 inner wall of main shaft housing on 13 another side of auxiliary bearing
A floating support part 6.
Multiple floating support parts 6 are arranged along the circumferencial direction of the auxiliary bearing 13；
The floating support part 6 is elastic bellows.
The elastic component 8 is spring.
The fixing sleeve 12 is copper sheathing.
The main shaft housing 4 is two-stage stepped hole, and the internal diameter of the first stepped hole 42 is less than the internal diameter of the second stepped hole 41,
First supporting member 2 is arranged 42 in first stepped hole.
First supporting member 2 is single-row angular contact ball bearing or double-row angular contact bal bearing.
Second supporting member 9 is that the electromagnetic bearing being in contact on the preceding end-journal 301 and with fixing sleeve 12 is arranged in.
One end setting of the main shaft housing 4 is used to compress the first end cover 1 of the first supporting member 2, the main shaft housing 4
The second end cover 10 for compressing second supporting member 9 is arranged in the other end.
The control system includes being used for through the main shaft housing side wall to floating support part fuel feeding or for compressed air
Pipeline 5, the adjusting pump 17 on the pipeline is set, it is set on the pipeline and is located at described oil sump for adjusting pump rear portion
18, it is arranged in the second stepped hole for monitoring radial two first displacement sensors 11 with axial direction of main shaft, is arranged in the axis
For monitoring the second displacement sensor 7 of auxiliary bearing axial displacement in set, it is arranged in the second stepped hole 41 for monitoring master
The speed probe 14 of shaft body revolving speed, and for connecting two first displacement sensors, second displacement sensor and turning
The PLC18 of fast sensor.
The control system used in the examples, which is preferably used, to be used to be connected to floating support through main shaft housing side wall
The pipeline of part, and solenoid valve 16 is set on pipeline, then it is arranged at 16 rear portion of solenoid valve and adjusts pump 17, realizes that dynamic controls,
And oil sump 18 is connected adjusting pump rear portion.
Embodiment two
The difference of itself and embodiment one is:
The floating support part 6 is the elastic block rubber of intermediate setting air bag.
The elastic component 8 is elastic rubber column.
The fixing sleeve 12 is ceramic jacket.
Second supporting member 9 is that the permanent magnets magnetic being in contact on the preceding end-journal 301 and with fixing sleeve 12 is arranged in
Suspension bearing.
Embodiment three
As shown in fig. 7, the difference of itself and embodiment one is: the floating support part 6 used in the examples is bullet
Property bellows, and control system includes the reversal valve 19 being connected with elastic bellows, and reversal valve is connected with speed governing valve 20,
And speed governing valve 20 is then connected for realizing stable pressure is exported with pressurized cylinder 21, and the pressure being arranged on pipeline 5 passes
Sensor 22 can monitor the air pressure size in pipeline to adjust the switch of gas source, and the velocity sensor being arranged on pipeline 5
Energy 23 enough monitors the size of air-flow, and check valve 26 is provided on pipeline, realizes that pressurized cylinder can leave gas source progress
Short-term job allows gas source 25 to carry out discontinuous operation, reduces energy consumption, and the pipe between velocity sensor and gas source
Road setting overflow relief valve 24, to ensure to exclude extra gas automatically when air pressure is excessive, to be protected to system；It should
Gas source used in the examples be air pump, certainly can also using compressed tanks by the way of the time gas supply.
Example IV
It is as shown in Figure 8: a kind of control method of mixing bearing self-balancing electrical spindle for machine tool structure, comprising the following steps:
S1:PLC or computer are initialized, and are powered to the structure and carry out self-test, in the error-free false alarm of self-test
Starting is realized afterwards；
S2: the speed probe for monitoring main shaft body calculates master with displacement transducer signal and according to displacement transducer signal
Shaft body runs amount of unbalance；
If amount of unbalance is larger and is greater than the set value, the electric current by increasing corresponding electromagnetic bearing changes its electromagnetism and inhales
Power carries out amount of unbalance adjustment, and main shaft body is forced to be rotated around its geometry centre of gyration；
S3: after main shaft body running balance, detecting the revolving speed of main shaft body, after revolving speed is greater than the set value, auxiliary bearing
It is out of service under the action of pneumatic/hydraulic coupling, while electromagnetic bearing incision operation；
S4: in main shaft body operational process, displacement transducer signal and signals of rotational speed sensor are detected always, is led
Shaft body does not measure adjustment；
S5: when closing is required, when detecting the speed of mainshaft lower than setting speed, electromagnetic bearing exits work, simultaneously
Auxiliary bearing cuts work.
Further, it when detecting fault-signal in S3, is then directly entered in S5.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of mixing bearing self-balancing electrical spindle for machine tool structure, it is characterised in that: including main shaft housing, be arranged in the main shaft
The main shaft body in the main shaft housing is arranged in first supporting member of rear end in shell, is arranged in the main shaft housing front end
And the second supporting member matched with the main shaft body, after being arranged in the main shaft housing and being located at second supporting member
Assistant supporting mechanism of the end for automatic adjustment, and be arranged in the main shaft housing for controlling the assistant supporting mechanism
Control system；
The main shaft body is multistage multi-diameter shaft, the band conical surface axis matched including at least one with the assistant supporting mechanism
Neck, a rear end axle journal matched with the first supporting member, a preceding end-journal matched with second supporting member.
2. mixing bearing self-balancing electrical spindle for machine tool structure as described in claim 1, it is characterised in that: the aiding support machine
Structure includes the fixing sleeve for being arranged on preceding end-journal and matching with the main shaft housing, is arranged in multiple on the fixing sleeve
Elastic component, it is described auxiliary with the auxiliary bearing matched with conical surface axle journal and one side and multiple elastic components are connected
The setting of bearing inner ring face and the fixed cone surface cover matched with conical surface axle journal are helped, is arranged on the auxiliary bearing another side
The multiple floating support parts matched with the main shaft housing inner wall.
3. mixing bearing self-balancing electrical spindle for machine tool structure as claimed in claim 2, it is characterised in that: multiple floating branch
Bearing member is arranged along the circumferencial direction of the auxiliary bearing；
The floating support part is the elastic block rubber of elastic bellows or intermediate setting air bag.
4. mixing bearing self-balancing electrical spindle for machine tool structure as claimed in claim 3, it is characterised in that: the main shaft housing is
Two-stage stepped hole, and the internal diameter of the first stepped hole is less than the internal diameter of the second stepped hole, the first supporting member setting is described the
In one stepped hole.
5. mixing bearing self-balancing electrical spindle for machine tool structure as claimed in claim 4, it is characterised in that: the elastic component is bullet
Spring or elastic rubber column.
6. mixing bearing self-balancing electrical spindle for machine tool structure as claimed in claim 5, it is characterised in that: first supporting member
For single-row angular contact ball bearing or double-row angular contact bal bearing.
7. mixing bearing self-balancing electrical spindle for machine tool structure as claimed in claim 6, it is characterised in that: second supporting member
For the electromagnetic bearing or permanent magnets magnetic suspension bearing that are in contact on the preceding end-journal and with fixing sleeve is arranged in.
8. mixing bearing self-balancing electrical spindle for machine tool structure as claimed in claim 7, it is characterised in that: the main shaft housing
One end setting is arranged for compressing the first end cover of the first supporting member, the other end of the main shaft housing for compressing described second
The second end cover of supporting member.
9. mixing bearing self-balancing electrical spindle for machine tool structure as claimed in claim 8, it is characterised in that: the control system packet
It includes and is used to be arranged on the pipeline to floating support part fuel feeding or for the pipeline of compressed air through the main shaft housing side wall
Adjusting pump, it is set on the pipeline and is located at described air pump or oil sump for adjusting pump rear portion, is arranged in the second stepped hole
For monitoring radial two first displacement sensors with axial direction of main shaft, it is arranged in the axle sleeve for monitoring auxiliary bearing axial direction
The speed probe for being used to monitor main shaft body revolving speed in the second stepped hole is arranged in the second displacement sensor of displacement, and
For connecting the DSP or PLC or computer of two first displacement sensors, second displacement sensor and speed probe.
10. a kind of control method of mixing bearing self-balancing electrical spindle for machine tool structure, comprising the following steps:
S1:PLC or computer are initialized, and are powered to the structure and carry out self-test, real after the error-free false alarm of self-test
Now start；
S2: the speed probe for monitoring main shaft body calculates main shaft sheet with displacement transducer signal and according to displacement transducer signal
Running body amount of unbalance；
If amount of unbalance is larger and is greater than the set value, the electric current by increasing corresponding electromagnetic bearing change its electromagnetic attraction into
The adjustment of row amount of unbalance, forces main shaft body to be rotated around its geometry centre of gyration；
S3: after main shaft body running balance, the revolving speed of main shaft body is detected, after revolving speed is greater than the set value, auxiliary bearing is in gas
It is out of service under the action of dynamic/hydraulic coupling, while electromagnetic bearing incision operation；
S4: in main shaft body operational process, displacement transducer signal and signals of rotational speed sensor are detected always, carries out main shaft sheet
Body does not measure adjustment；
S5: when closing is required, when detecting the speed of mainshaft lower than setting speed, electromagnetic bearing exits work, assists simultaneously
Bearing cuts work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910439046.6A CN110193611B (en) | 2019-05-24 | 2019-05-24 | Electric spindle structure of hybrid supporting self-balancing machine tool and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910439046.6A CN110193611B (en) | 2019-05-24 | 2019-05-24 | Electric spindle structure of hybrid supporting self-balancing machine tool and control method thereof |
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| Publication Number | Publication Date |
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| CN110193611A true CN110193611A (en) | 2019-09-03 |
| CN110193611B CN110193611B (en) | 2024-04-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112846828A (en) * | 2020-12-10 | 2021-05-28 | 珠海格力电器股份有限公司 | Support span adjusting device for rotating assembly and machine tool |
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| CN2046779U (en) * | 1989-01-18 | 1989-11-01 | 北京第二机床厂 | Precision principal axis system with adjustable pre-load hollow cylinder roller bearing |
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| CN102151852A (en) * | 2011-04-27 | 2011-08-17 | 天津大学 | Hydro-hybrid ceramic main shaft device |
| CN203156068U (en) * | 2013-03-19 | 2013-08-28 | 柳州五菱汽车有限责任公司 | Assembly structure of machining equipment power head main shaft |
| CN203725783U (en) * | 2013-12-31 | 2014-07-23 | 上海申克机械有限公司 | Cutter switchable milling device and milling spindle thereof |
| CN103978426A (en) * | 2014-05-23 | 2014-08-13 | 浙江勤龙机械科技股份有限公司 | Full-static-pressure back-cone type high-speed main shaft of grinding head mechanism and assembly process thereof |
| CN204504240U (en) * | 2015-03-25 | 2015-07-29 | 张黎明 | The efficient dynamic/static piezoelectric main shaft of a kind of high speed and super precision |
| CN210112979U (en) * | 2019-05-24 | 2020-02-25 | 南阳师范学院 | Hybrid support self-balancing machine tool electric spindle structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112846828A (en) * | 2020-12-10 | 2021-05-28 | 珠海格力电器股份有限公司 | Support span adjusting device for rotating assembly and machine tool |
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