CN107052894A - A kind of device and numerically controlled lathe for eliminating resonance - Google Patents
A kind of device and numerically controlled lathe for eliminating resonance Download PDFInfo
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- CN107052894A CN107052894A CN201710266429.9A CN201710266429A CN107052894A CN 107052894 A CN107052894 A CN 107052894A CN 201710266429 A CN201710266429 A CN 201710266429A CN 107052894 A CN107052894 A CN 107052894A
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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
- 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
- B23Q11/0032—Arrangements for preventing or isolating vibrations in parts of the machine
- B23Q11/0039—Arrangements for preventing or isolating vibrations in parts of the machine by changing the natural frequency of the system or by continuously changing the frequency of the force which causes the vibration
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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
- 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
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Abstract
The present invention relates to a kind of device and numerically controlled lathe for eliminating resonance, belong to lathe in machining technical field.The device of elimination resonance, applied to numerically controlled lathe, the numerically controlled lathe includes：Motor and main shaft, the motor and spindle drive connection.Described device includes：Signal generator, the signal generator is coupled with the motor, is gone to control the continual speed change of the motor to rotate for sending signal according to preset rules, is exported with the uninterrupted speed change for realizing the main shaft.The signal generator can go to control the continual speed change of the motor to rotate according to preset rules, be exported with the uninterrupted speed change for realizing the main shaft, so that the covibration during having effectively eliminated lathe process.The present invention possesses：Eliminate notable, simple in construction, with low cost resonance effect, strong applicability, the excellent plurality of advantages of performance.
Description
Technical field
The invention belongs to lathe in machining technical field, and in particular to a kind of device and numerically controlled lathe of elimination resonance.
Background technology
Numerically controlled lathe is a kind of high-precision, efficient Automatic Lathe, can processing linear cylinder, oblique line cylinder, circular arc
With the complex part such as various screw threads, groove, worm screw.Lathe covibration, lathe process production more or less can all occur in processing
Raw covibration can cause product surface rough and uneven in surface, and tool wear accelerates etc., have a strong impact on processing efficiency and product quality.
Therefore, the covibration of lathe in process how is eliminated, becomes the problem of industry personnel greatly pays close attention to.At present, pin
To the covibration of lathe in process, mostly in the following ways：The first, is greatly reduced cutting speed, although subtract
Delay covibration, but effect is limited, while can also have a strong impact on processing efficiency.Second, strengthen processing rigidity, using special
The fixture and cutter of door design, because the fixture and cutter of use need special design, for non-batch machining, are added
Cost, cost performance is not high, and effect is limited.The resonance imagination that lathe is produced in process how is eliminated, is always to make us
The hang-up of headache, there is presently no more satisfied solution technical scheme.
The content of the invention
In consideration of it, it is an object of the invention to provide a kind of device and numerically controlled lathe for eliminating resonance, effectively to improve
Above mentioned problem.
What embodiments of the invention were realized in：
The embodiments of the invention provide a kind of device for eliminating resonance, applied to numerically controlled lathe, the numerically controlled lathe includes：
Motor and main shaft, the motor and spindle drive connection.Described device includes：Signal generator, the signal generator
Coupled with the motor, go to control the continual speed change of the motor to rotate for sending signal according to preset rules, to realize
The uninterrupted speed change output of the main shaft.
In preferred embodiments of the present invention, the signal that the signal generator is sent includes：It is uninterrupted alternately to become
The first signal and secondary signal changed, first signal are used to increase the rotating speed of the motor, and the secondary signal is used for
Reduce the rotating speed of the motor.
In preferred embodiments of the present invention, the signal generator is processor, control system and motor driver, institute
State processor to couple with the control system, the control system is coupled with the motor driver, the motor driver with
The motor coupling.
In preferred embodiments of the present invention, the signal generator be intelligent switch, control system and motor driver,
The intelligent switch is coupled with the control system, and the control system is coupled with the motor driver, the motor driving
Device is coupled with the motor.
In preferred embodiments of the present invention, the signal generator is frequency converter, control system and motor driver, institute
State control system to couple with the motor driver, the motor driver and the frequency converter are coupled with the motor.
In preferred embodiments of the present invention, the amplitude of first signal meets default with the amplitude of the secondary signal
Relation, so that the amplitude that the rotating speed of the motor reduces and the amplitude that the rotating speed of the motor increases match.
In preferred embodiments of the present invention, the amplitude of first signal is first threshold, for making the motor
The amplitude that rotating speed reduces compared with the motor initial speed is A, and the A is selected from 5-20%.
In preferred embodiments of the present invention, the A is 10%.
The embodiment of the present invention additionally provides a kind of numerically controlled lathe, including：The dress of motor, main shaft and above-mentioned elimination resonance
Put, the signal generator in described device is coupled with the motor, the motor and spindle drive connection.
In preferred embodiments of the present invention, the motor is spindle motor.
The embodiments of the invention provide a kind of device and numerically controlled lathe for eliminating resonance.The device of elimination resonance is applied to
Numerically controlled lathe, the numerically controlled lathe includes：Motor and main shaft, the motor and spindle drive connection.Described device includes：
Signal generator, the signal generator is coupled with the motor.Motor as the core component during lathe process it
One, the size of its rotating speed directly affects effect of processing and efficiency etc., meanwhile, the size of its rotating speed also with lathe process when
Shockproofness is closely bound up.Therefore, want to eliminate the covibration during lathe process, would have to consider how to change electricity
The factors such as the rotating speed of machine.Generally, lathe process is all one fixed rotating speed processing of maintenance, and this results in processing resonance and constantly added
By force, when the strength of resonance runs up to the rigidity more than processing workpiece, it is rough and uneven in surface to will result in product surface, can be to product quality
Cause to have a strong impact on.Therefore, the concept is that motor speed does not stop change during lathe process, it is to avoid same frequency shakes
Continue to build up strengthen and occur covibration the problem of.Further, the signal generator can be gone according to preset rules
Control the continual speed change of the motor to rotate, exported with the uninterrupted speed change for realizing the main shaft, so as to effectively eliminate
Covibration during lathe process, it is to avoid the covibration that lathe process is produced can cause product surface rough and uneven in surface,
The problems such as tool wear acceleration etc., improve processing efficiency and product quality.The present invention possesses：Elimination resonance effect is notable, knot
Structure is simple, with low cost, strong applicability, the excellent plurality of advantages of performance.
Other features and advantages of the present invention will be illustrated in subsequent specification, also, partly be become from specification
It is clear that or being understood by implementing the embodiment of the present invention.The purpose of the present invention and other advantages can be by being write
Specifically noted structure is realized and obtained in specification, claims and accompanying drawing.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings
Obtain other accompanying drawings.By shown in accompanying drawing, above and other purpose of the invention, feature and advantage will become apparent from.In whole
Identical reference indicates identical part in accompanying drawing.Deliberately accompanying drawing, emphasis are not drawn by actual size equal proportion scaling
It is the purport for showing the present invention.
Fig. 1 shows a kind of structured flowchart of numerically controlled lathe provided in an embodiment of the present invention.
Fig. 2 shows the vibration frequency schematic diagram during main axis in Fig. 2 provided in an embodiment of the present invention.
Fig. 3 shows that the main shaft in a kind of numerically controlled lathe provided in an embodiment of the present invention realizes the original of uninterrupted speed change output
Reason figure.
Fig. 4 shows a kind of structured flowchart of the device for elimination resonance that first embodiment of the invention is provided.
Fig. 5 shows a kind of structured flowchart of the device for elimination resonance that second embodiment of the invention is provided.
Fig. 6 shows a kind of structured flowchart of the device for elimination resonance that third embodiment of the invention is provided.
Icon：10A- eliminates the device of resonance；10B- eliminates the device of resonance；10C- eliminates the device of resonance；
11A- signal generators；11B- signal generators；11C- signal generators；111A- processors；112A- control systems；
113A- motor drivers；111B- intelligent switch；112B- control systems；113B- motor drivers；111C- frequency converters；
112C- control systems；113C- motor drivers；30- numerically controlled lathes；31- motors；33- main shafts.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.The present invention implementation being generally described and illustrated herein in the accompanying drawings
The component of example can be arranged and designed with a variety of configurations.
Therefore, the detailed description of embodiments of the invention below to providing in the accompanying drawings is not intended to limit claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belongs to the model that the present invention is protected
Enclose.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then it further need not be defined and explained in subsequent accompanying drawing.
In the description of the invention, it is necessary to explanation, the instruction such as term " on ", " under ", "left", "right", " interior ", " outer "
Orientation or position relationship be that, based on orientation shown in the drawings or position relationship, or the invention product is usually put when using
Orientation or position relationship, be for only for ease of the description present invention and simplify description, rather than indicate or imply signified device
Or element there must be specific orientation, with specific azimuth configuration and operation, therefore it is not considered as limiting the invention.
In addition, term " first ", " second " etc. are only used for distinguishing description, and it is not intended that indicating or implying relative importance.
In the description of the invention, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " setting ",
" installation ", " connected ", " connection ", " coupling " should be interpreted broadly, for example, it may be being fixedly connected or detachably connecting
Connect, or be integrally connected；Can be mechanical connection or electrical connection；Can be joined directly together, middle matchmaker can also be passed through
Jie is indirectly connected to, and can be the connection of two element internals.For the ordinary skill in the art, can be with concrete condition
Understand the concrete meaning of above-mentioned term in the present invention.
The embodiments of the invention provide a kind of numerically controlled lathe 30, as shown in Figure 1.The numerically controlled lathe 30 includes：Motor 31, master
Axle 33 and the device for eliminating resonance.
The motor 31 is connected with the main shaft 33, is rotated for drive shaft 33.The motor 31 can be mesh
The motor often used in preceding numerically controlled lathe 30, in the present embodiment, it is preferable that the motor 31 can be alternating current generator, for example,
It can be the spindle motor in alternating current generator.
Motor 31 directly affects processing as one of core component during lathe process, the size of its rotating speed
Effect and efficiency etc., meanwhile, the size of its rotating speed also with lathe process when shockproofness it is closely bound up.Therefore, want to eliminate
Covibration during lathe process, would have to consider how the factors such as the rotating speed of change motor 31.
The device for eliminating resonance includes：Signal generator, the signal generator is coupled with the motor 31, is used for
Signal is sent according to preset rules to go to control the continual speed change of the motor 31 to rotate, to realize the uninterrupted of the main shaft 33
Speed change is exported.By changing the rotating speed of motor 31, and then change the velocity of rotation of main shaft 33, so as to eliminate lathe process mistake
The resonance imagination in journey.
Wherein, it is above-mentioned to send signal according to preset rules and refer to, according to user in order to meet or reach lathe process
The actual demand of workpiece and preestablish rule send signal, for example, it may be it is continual alternately send the first signal and
Secondary signal.Wherein, first signal is used to increase the rotating speed of the motor 31, and the secondary signal is used to make the electricity
The rotating speed of machine 31 reduces.So by the rotating speed of continual alternate change motor 31, it just can be very good to eliminate motor 31
Covibration, as shown in Figure 2.
Wherein, it is represented by a in Fig. 2：During higher rotation speed, the vibration frequency of main shaft 33；Represented by b in Fig. 2
It is：During compared with the slow-speed of revolution, the vibration frequency of main shaft 33；Represented by c in Fig. 2 is：Higher rotation speed and uninterruptedly handed over compared with the slow-speed of revolution
During for change, the vibration frequency of main shaft 33.From figure, it is seen that, when the uninterrupted speed change of main shaft 33 is exported, i.e., motor 31 is not
When the speed change of interruption is rotated, the vibration frequency of its main shaft 33 interferes counteracting, as shown in the figure c in Fig. 2.
Wherein, higher rotation speed and be relative compared with the slow-speed of revolution, for example, during higher than rated speed, being just higher rotation speed, being less than
During rated speed, just for compared with the slow-speed of revolution.For example, rated speed is 100 turns per minute, then the rotating speed higher than 100 turns per minute is just
For higher rotation speed, the rotating speed less than 100 turns per minute is just compared with the slow-speed of revolution.
, wherein it is desired to explanation, it is above-mentioned in numerical value 100, it is only for readily appreciate and illustrated example, because
This, can not be understood as being limitation of the present invention.The actual speed of motor 31 should determine according to actual practical situation, therefore,
It is not restricted.
Wherein, the principle that the uninterrupted speed change of the main shaft 33 is exported is briefly described by taking Fig. 3 as an example.The motor 31
Rotated according to the first tach signal, its corresponding rotating speed is the first rotating speed, now the rotating speed of main shaft 33 can also be considered as the
One rotating speed (wherein, ignores the energy loss in transmission process)；The motor 31 is rotated according to the second tach signal, and its is right
The rotating speed answered is the second rotating speed, and now the rotating speed of main shaft 33 can also be considered as the second rotating speed and (wherein, ignore the energy in transmission process
Amount loss).Because the first rotating speed is different from the second rotating speed, the speed change of main shaft 33 can just exported.Wherein, if the first tach signal
Sent with the continual alternating of the second tach signal, just can be with the rotating speed of continual alternate change motor 31, so that main shaft
33 uninterrupted speed change outputs, just can be very good to eliminate covibration.
First embodiment
As the first embodiment, device 10A, such as Fig. 4 applied to the elimination resonance in above-mentioned numerically controlled lathe 30
It is shown.The device 10A for eliminating resonance includes：Signal generator 11A, wherein, the signal generator 11A is：Processor
111A, control system 112A and motor driver 113A.
Wherein, the processor 111A is coupled with the control system 112A, is used for for being sent to control system 112A
Change the signal of the rotating speed of motor 31.In the present embodiment, it is preferable that the signal includes：First letter of uninterrupted alternately change
Number and secondary signal, first signal is used to make the rotating speed of the motor 31 increase, and the secondary signal is for making the electricity
The rotating speed of machine 31 reduces.
Wherein, above-mentioned processor 111A can be a kind of chip for possessing signal handling capacity, for example, it may be general
Processor, including central processing unit (Central Processing Unit, CPU), network processing unit (Network
Processor, NP) etc.；It can also be digital signal processor (Digital Signal Processing, DSP), special collection
Into circuit (Application Specific Integrated Circuit, ASIC), ready-made programmable gate array (Field
Programmable Gate Array, FPGA) or other PLDs, discrete gate or transistor logic,
Discrete hardware components.Wherein, general processor can be microprocessor or can also be any conventional processor etc..Yu Ben
In embodiment, it is preferable that processor 111A can be the processor of STM32 series, and the processor of the model can be by people
Buy and use, its specific occupation mode is inevitable known to the public, for example, the specific work(for how setting each pin
Connection that can, how each pin and other equipment be set etc..
Wherein, in order to preferably eliminate the covibration during lathe process, in the present embodiment, it is preferable that described
The amplitude of first signal and the amplitude of the secondary signal meet preset relation, so that the amplitude that the rotating speed of the motor 31 reduces
The amplitude increased with the rotating speed of the motor 31 matches.For example, the initial speed of motor 31 is 500 turns per minute, the first signal
After effect, the rotating speed of motor 31 is changed into 600 turns per minute, then compared with initial speed, and increased amplitude is 100 turns, the second letter
After number effect, the rotating speed of motor 31 is 400 turns per minute, then compared with initial speed, and the amplitude of reduction is 100 turns.Namely
Say, the amplitude that the amplitude of rotating speed reduction and the rotating speed of the motor 31 of motor 31 increase matches.
Wherein, preset relation refers to meet amplitude and the rotating speed of the motor 31 that the rotating speed of the motor 31 reduces
Under conditions of the amplitude of increase matches, the relation that the amplitude of first signal must be met with the amplitude of the secondary signal.
Wherein, the preset relation, should set according to actual processing demand.
Generally, lathe is when processing workpiece, and the rotating speed of its motor 31 is set according to actual processing demand, if increase
Amplitude it is excessive or/and reduce amplitude it is excessive, can influence the processing effect of workpiece.Therefore, in order to better meet processing
Demand, in the present embodiment, it is preferable that the amplitude of first signal is first threshold, the rotating speed for making the motor 31
The amplitude reduced compared with the initial speed of motor 31 is A, and the A is selected from 5-20%.For example, the initial speed of motor 31 is
100 turns per minute, after the first signal function, the rotating speed of motor 31 is changed into, and 105-120 per minute turns, after secondary signal effect,
The rotating speed of the motor 31 is changed into 80-95 per minute and turned.I.e. the rotating speed of motor 31 increases compared with the initial speed of motor 31
Or reduce amplitude should between 5-20%, for example, it may be 5%, 6%, 7%, 8% ..., 18%, 19%, 20%, i.e.,
As long as any number between meeting 5-20%.In the present embodiment, it is preferable that the rotating speed of motor 31 and the motor 31
It is that 10%, i.e. A are 10% that initial speed, which compares the amplitude increasedd or decreased,.
Wherein, the first threshold in above-mentioned refers to meet the rotating speed and the initial speed of motor 31 of the motor 31
Amplitude compared to reduction is A, and the A is selected under conditions of 5-20%, the relation that the amplitude of first signal must be met.Its
In, the amplitude of first signal should be set according to actual processing demand.
The control system 112A is coupled with processor 111A and the motor driver 113A respectively, for controlled motor
31 rotating speed, further, the control system 112A to motor driver 113A send rotary speed instruction so that motor 31 according to
The rotary speed instruction that control system 112A is sent is operated.The control system 112A can often be used in numerically controlled lathe 30
Control system 112A, in the present embodiment, it is preferable that the control system 112A is computer digit networked control systems
(Computerized Numerical Control, CNC) system.Control system 112A can be handled logically with control
Coding or other symbolic instruction regulated procedures, are decoded by computer, so that lathe performs the action provided,
Blank material is processed into by semi-finished product fabricated part by Tool in Cutting.
Wherein, it should be appreciated that the processor 111A in above-mentioned can be integrated with the processing in control system 112A
Device 111A, i.e. processor 111A can be realized using the processor 111A in control system 112A, without extra processing
Device 111A；It can also be another single processor 111A outside control system 112A, not make herein, further limit.
The motor driver 113A is coupled with the control system 112A and the motor 31 respectively.For according to control
The rotary speed instruction of motor 31 that system 112A is sent goes controlled motor 31 to be rotated accordingly.Motor driver 113A is used as one kind
According to controller come the component of the motion of motor 31, be mainly used to speed governing, adjust moment of torsion, turn to etc., be also equipped with simultaneously
Defencive function, for example, possessing the defencive function such as overvoltage, overcurrent, overheat, under-voltage.Described motor driver 113A can be with
It is the driver for motor 31 often used in numerically controlled lathe 30, in the present embodiment, it is preferable that the motor driving
Device 113A can be AC servo driver.
Second embodiment
As second of embodiment, device 10B, such as Fig. 5 applied to the elimination resonance in above-mentioned numerically controlled lathe 30
It is shown.The device 10B for eliminating resonance includes：Signal generator 11B, wherein, the signal generator 11B is：Intelligence is opened
Close 111B, control system 112B and motor driver 113A.
Wherein, the device 10B for the elimination resonance that the embodiment is provided is compared with first embodiment, and its difference is,
Signal generator 11B is different, further, as shown in Figure 5.
The intelligent switch 111B is coupled with the control system 112B, for sending control letter to control system 112B
Number, the control system 112B is received after the control signal that the intelligent switch 111B is sent, at the control signal
Reason, for example, after decoding, than peer processes, identifying the control signal, and induction signal relative with the control signal is sent
Controlled motor 31 is gone to be rotated according to preset rules to motor driver 113B.For example, the control signal includes：According to it is default when
Between alternate the first control signal and the second control signal of change.Control system 112B receives the first control signal and
After two control signals, the control signal is handled, the signal is identified, and corresponding with the first control signal is preset
The first signal and the default secondary signal corresponding with the second control signal be sent to motor driver 113B, so as to realize
The continual speed change of motor 31 is rotated, wherein, first signal is used to increase the rotating speed of the motor 31, second letter
Number be used for reduce the rotating speed of the motor 31.The intelligent switch 111B can be the switch for possessing hardware programmable capability,
For example, PLC programmable switches.Or, the intelligent switch 111B can also be the component for possessing memory or circulatory function, example
Such as, it can be delay loop time relay etc..For example, it may be the type such as DH48S-S is serial, ST3PR series, ZYS11 series
Number the delay loop time relay.
Wherein, the prefixed time interval in above-mentioned should be set according to actual use demand, for example, lathe in processing pair plus
When work precision is not extra high workpiece, prefixed time interval can be set to it is slightly longer, for example, 5-10 seconds.Lathe exists
Process workpiece extra high to requirement on machining accuracy when, prefixed time interval can be set to it is more slightly shorter, for example, 1-3 seconds
Deng.For example, intelligent switch 111B sends the first control signal to control system 112B, after the time interval of 5 seconds, intelligently open
Close 111B and send the second control signal to control system 112B again, after the time interval of 5 seconds, intelligent switch 111B again to
Control system 112B sends the first control signal ... so repeatedly, continual alternately to send the first control signal and the second control
Signal processed.
Wherein, the time interval between the first control signal and the second control signal can not also be equal, for example, intelligence
Can switch 111B to control system 112B send the first control signal, after the time interval of 1 second, intelligent switch 111B again to
Control system 112B sends the second control signal, then after the time interval of 2 seconds, intelligent switch 111B is again to control system
112B sends the first control signal, then after the time interval of 3 seconds, and intelligent switch 111B sends the to control system 112B again
Two control signals ... are so repeatedly, continual alternately to send the first control signal and the second control signal.
Wherein, it should be appreciated that the prefixed time interval enumerated in above-mentioned, for example, 1-3 seconds, 5-10 seconds etc., only
It is illustrated example for the ease of understanding, specific time interval should be set, therefore can not manage according to actual functional need
Solution is into being limitation of the present invention.
Wherein, control signal can be a level signal, such as high level or low level.Low level represents that magnitude of voltage is low
In the voltage of the first numerical value, the first numerical value is a conventional numerical value in industry.For example, for generally for TTL circuits, first
Numerical value is 0.0V-0.4V, and for cmos circuit, the first numerical value is 0.0-0.1V.In the embodiment of the present invention, preferably
Ground, the first numerical value is that 0V, i.e. low level are 0V.High level represents that magnitude of voltage is higher than the voltage of second value, and second value is row
A conventional numerical value in the industry.For example, for generally for TTL circuits, second value is 2.4V-5.0V, and for CMOS electricity
For road, second value is 4.99-5.0V.In the embodiment of the present invention, it is preferable that second value is 3.3V, i.e. high level is
3.3V。
Wherein, " control system 112B is controlled by default first signal corresponding with the first control signal and with second
The corresponding default secondary signal of signal is sent to default first signal and secondary signal in motor driver 113B ",
Be user according to actual processing demand, rule set in advance for meeting process requirements etc..
Wherein, the control system in the device 10A for the elimination resonance that the control system 112B is provided with first embodiment
112A is identical, the motor driver in the device 10A for the elimination resonance that the motor driver 113B is provided with first embodiment
113A is identical, and in order to avoid burden, no longer control system 112B and motor driver 113B are illustrated herein.Wherein, need
It is noted that control system 112B is coupled with the intelligent switch 111B and the motor driver 113B respectively.
3rd embodiment
As the third embodiment, device 10C, such as Fig. 6 applied to the elimination resonance in above-mentioned numerically controlled lathe 30
It is shown.The device 10C for eliminating resonance includes：Signal generator 11C, wherein, the signal generator 11C is：Frequency converter
111C, control system 112C and motor driver 113C.
Wherein, the device 10C for the elimination resonance that the embodiment is provided is compared with first embodiment, and its difference is,
Signal generator 11C is different, further, as shown in Figure 6.
The frequency converter 111C is coupled with the motor 31, for the base in motor driver 113C drivens motor 31
On plinth, go to increase according to preset rules or/and reduce the rotating speed of motor 31.Preferably, the frequency converter 111C can be according to pre-
If rule goes to change the voltage or/and frequency of the working power of motor 31, and then goes to change the rotating speed of motor 31, to realize the master
The uninterrupted speed change output of axle 33.Frequency converter 111C is used as a kind of voltage or/and frequency by changing the working power of motor 31
The electric control appliance of ac motor is controlled etc. mode.The frequency converter 111C can be the change often used on the market at present
Frequency device 111C.For example, it may be the frequency converter 111C of the model such as 6SE64 is serial, G11S series.
For example, frequency converter 111C is continual alternately to send first signal and second letter related to the working power of motor 31
Number, go to increase or/and reduce the rotating speed of motor 31, exported with the uninterrupted speed change for realizing the main shaft 33.Wherein, the first signal
Sent with secondary signal according to preset rules, for example, it may be continual alternately send the first signal and secondary signal.
The amplitude of first signal meets preset relation with the amplitude of the secondary signal, so that what the rotating speed of the motor 31 reduced
The amplitude that the rotating speed of amplitude and the motor 31 increases matches.
Wherein, the preset relation refers to meet amplitude and turn of the motor 31 that the rotating speed of the motor 31 reduces
Under conditions of the amplitude of speed increase matches, the pass that the amplitude of first signal must be met with the amplitude of the secondary signal
System.Wherein, the preset relation, should set according to actual processing demand.
Wherein, the control system in the device 10A for the elimination resonance that the control system 112C is provided with first embodiment
112A is identical, the motor driver in the device 10A for the elimination resonance that the motor driver 113C is provided with first embodiment
113A is identical, and in order to avoid burden, no longer control system 112C and motor driver 113C are illustrated herein.
, wherein it is desired to which explanation, the control system 112C sends rotary speed instruction to motor driver 113C, so that electric
Machine 31 is operated according to the control system 112C rotary speed instructions sent, for example, being operated with 500 turns per minute of speed, then
Change the rotating speed of motor 31 by frequency converter 111C, exported with the uninterrupted speed change for realizing the main shaft 33.
For example, being rotated in the way of 600,400,600,400 ..., i.e. motor 31 is turned with 600 turns per minute of speed
Dynamic, motor 31 is rotated with 400 turns per minute of speed, motor 31 is rotated with 600 turns per minute of speed, motor 31 is with per minute
400 turns of speed is rotated ....Its time interval can be equal, for example, motor 31 is turned with 600 turns per minute of speed
Dynamic, after 5 seconds, motor 31 is rotated with 400 turns per minute of speed, then after 5 seconds, motor 31 is with 600 turns per minute
Speed is rotated, then after 5 seconds, motor 31 is rotated with 400 turns per minute of speed ....Its time interval can also be not phase
Deng, for example, motor 31 is rotated with 600 turns per minute of speed, after 1 second, motor 31 is turned with 400 turns per minute of speed
It is dynamic, then after 2 seconds, motor 31 is rotated with 600 turns per minute of speed, then after 3 seconds, motor 31 is with 400 turns per minute
Speed rotate ....
, where it should be understood that in above-mentioned 500,400,600 etc. numeral signal, it is only for readily appreciate and
Illustrated example, can not be understood as being limitation of the present invention.
In summary, the embodiments of the invention provide a kind of device and numerically controlled lathe for eliminating resonance.Elimination resonance
Device is applied to numerically controlled lathe, and the numerically controlled lathe includes：Motor and main shaft, the motor and spindle drive connection.Institute
Stating device includes：Signal generator, the signal generator is coupled with the motor.Wherein, as the first embodiment, institute
Stating signal generator can be：Processor, control system and motor driver.It is used as second of embodiment, the signal hair
Giving birth to device can be：Intelligent switch, control system and motor driver.As the third embodiment, the signal generator can
Think：Frequency converter, control system and motor driver.But no matter which kind of embodiment signal generator is, may each be basis
Preset rules go to control the continual speed change of the motor to rotate, and are exported with the uninterrupted speed change for realizing the main shaft, so as to have
The covibration eliminated during lathe process of effect, it is to avoid the covibration that lathe process is produced can cause product surface
It is rough and uneven in surface, tool wear accelerate etc. the problems such as, improve processing efficiency and product quality.The present invention possesses：Eliminate resonance effect
The excellent plurality of advantages of really notable, simple in construction, with low cost, strong applicability, performance.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. a kind of device for eliminating resonance, it is characterised in that applied to numerically controlled lathe, the numerically controlled lathe includes：Motor and master
Axle, the motor and spindle drive connection, described device include：Signal generator, the signal generator and the electricity
Machine is coupled, and goes to control the continual speed change of the motor to rotate for sending signal according to preset rules, to realize the main shaft
Uninterrupted speed change output.
2. device according to claim 1, it is characterised in that the signal that the signal generator is sent includes：No
The first signal and secondary signal of interruption alternately change, first signal are used to increase the rotating speed of the motor, and described the
Binary signal is used to reduce the rotating speed of the motor.
3. device according to claim 2, it is characterised in that the signal generator is processor, control system and electricity
Machine driver, the processor is coupled with the control system, and the control system is coupled with the motor driver, the electricity
Machine driver is coupled with the motor.
4. device according to claim 2, it is characterised in that the signal generator be intelligent switch, control system and
Motor driver, the intelligent switch is coupled with the control system, and the control system is coupled with the motor driver, institute
Motor driver is stated to couple with the motor.
5. device according to claim 2, it is characterised in that the signal generator is frequency converter, control system and electricity
Machine driver, the control system is coupled with the motor driver, the motor driver and the frequency converter with it is described
Motor is coupled.
6. device according to claim 2, it is characterised in that the amplitude of first signal shakes with the secondary signal
Width meets preset relation, so that the amplitude that the rotating speed of the motor reduces and the amplitude that the rotating speed of the motor increases match.
7. device according to claim 6, it is characterised in that the amplitude of first signal is first threshold, for making
The amplitude that the rotating speed of the motor reduces compared with the motor initial speed is A, and the A is selected from 5-20%.
8. device according to claim 7, it is characterised in that the A is 10%.
9. a kind of numerically controlled lathe, it is characterised in that including：Motor, main shaft and as claimed in any one of claims 1 to 6 disappear
Except the device of resonance, the signal generator in described device is coupled with the motor, the motor and spindle drive connection.
10. numerically controlled lathe according to claim 9, it is characterised in that the motor is spindle motor.
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| CN201710266429.9A CN107052894A (en) | 2017-04-21 | 2017-04-21 | A kind of device and numerically controlled lathe for eliminating resonance |
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| CN201710266429.9A CN107052894A (en) | 2017-04-21 | 2017-04-21 | A kind of device and numerically controlled lathe for eliminating resonance |
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