CN103644875B - A kind of dynamically spindle rotation accuracy checkout gear - Google Patents
A kind of dynamically spindle rotation accuracy checkout gear Download PDFInfo
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- CN103644875B CN103644875B CN201310585077.5A CN201310585077A CN103644875B CN 103644875 B CN103644875 B CN 103644875B CN 201310585077 A CN201310585077 A CN 201310585077A CN 103644875 B CN103644875 B CN 103644875B
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Abstract
The open a kind of dynamically spindle rotation accuracy checkout gear of the present invention, relate to accurate measurement field, some current vortex sensor axis are made quadrature arrangement in main shaft detecting core shaft radial direction, obtain the detecting core shaft respective radial direction displacement signal of beating, fixed cover is passed and is locked along spindle jacket axial direction by some trip bolts, the coated spindle jacket fixing and locking of fixed cover is for supporting fixing current vortex sensor and reflective photoelectric sensor, current vortex sensor is connected embedded system device with reflective photoelectric sensor, process device to the circular runout data analysis collecting by embedded system, wherein the test point of current vortex sensor and reflective photoelectric sensor and main shaft detecting core shaft is contactless state. solve traditional contact-type detection and cannot measure the radial beat eccentricity of main shaft under High Rotation Speed is dynamic and the problem of main shaft absolute position rotating accuracy detection, provide structural design data for improving main shaft dynamic accuracy.
Description
Technical field
The invention relates to accurate measurement field, relates in particular to a kind of dynamically spindle rotation accuracy and detects dressPut.
Background technology
The circular runout of traditional detection main shaft generally adopts contact type measurement, as amesdial or the mini-inductance measurement crownOn smooth smooth rotary annular datum level, main shaft is done to carry out circular runout survey under utmost point slow-speed of revolution rotation statusAmount. Main shaft, in the time of certain rotation speed operation, generally exceedes per minute tens and just can not correctly read detection number while turningAccording to. When main shaft is in the time that more speed is rotated, table gauge head vibration frequency is accelerated, and adds that friction of motion brings attachedAdd effect of jitter, its instrument apparent value is without reading meaning. So existing traditional detection technology can only be in quasistaticIn situation, carry out main shaft diameter to glitch detection.
Main shaft is in the time running up work, and particularly rotating speed reaches 2000r/min to 10000r/min or higherTime, due to factors such as dynamic balancing error, bearing accuracy and processing assembling, influence of thermal deformations, its quasistatic is surveyedData and the actual condition state of amount have larger difference, and rotating speed enters resonant frequency region situation more very. CauseHigh dynamic motion accuracy error directly affects part processing precision.
Existing contactless high dynamic displacement checkout gear is to adopt separate type functional unit or parts substantiallyAdd computer and pile up and build formation, generally also will just can complete detection analysis task by special-purpose software, andIt is high that whole detection system is constructed cost, connects comparatively loaded down with trivial detailsly, detects operating process complexity. So normal conditionsUnder, owing to lacking accurate, comprehensive, the meticulous rotating accuracy data of main shaft under the dynamic work condition state of height,The dynamic technique analysis and the research and development that are unfavorable for high-precision high-speed main shaft are manufactured.
Summary of the invention
The present invention is intended at least solve the technical problem existing in prior art, has proposed to special innovation oneDynamically spindle rotation accuracy checkout gear.
A kind of dynamically spindle rotation accuracy checkout gear, comprising: at least two current vortex sensors 1, reflectionFormula photoelectric sensor 2 and embedded system are processed device, described current vortex sensor 1 and reflecting light faxSensor 2 is respectively through signal amplifier and FPGA (a kind of field programmable logic device) logic circuit and instituteState embedded system processing device and be connected,
Described reflective photoelectric sensor 2 is arranged in the radial direction telescopic of described main shaft detecting core shaft 8On mounting frame for sensor 5, calibration on described reflective photoelectric sensor 2 and described main shaft detecting core shaft 8The position of reference point is relative, for obtaining the absolute position one of calibrating reference point on described main shaft detecting core shaft 8Turn pulse signal and described position one is turned to pulse signal and after FPGA processing of circuit, be transferred to described embeddingFormula system treating apparatus, described embedded system is processed device according to the reference point pulse letter of described absolute positionNumber, described main shaft detecting core shaft 8 is calibrated and is arranged the circular runout number of described main shaft detecting core shaft 8According to collection position point; The collection starting impulse signal of its circumference equidistant position data collection point is by FPGA circuitTurn pulse period time domain distribution according to one calculating generation is set; The data acquisition location point that FPGA circuit distributesCollection starting impulse signal enabling 2 passage high-speed a/d circuit complete analog-to-digital conversion. FPGA Circnit LayoutThere is periodic refresh speed discrimination function, only the image data in confirmation velocity interval is extracted, ensure eachThe multiplicity of collection position point, makes testing result more accurate.
The present invention adopt described reflective photoelectric sensor mode obtain on circumference data acquisition location point thanConventionally the rotary encoder mode comparison adopting, has the spy that harvester simple installation and processing safety are highPoint.
Gather the system responses requirement of environment for meeting high dynamically high density data, the present invention uses FPGA electricityThe high real time effect on road is carried out real-time collaborative processing, ensures the high multiplicity of position, each collection point, with at main shaftUnder high current intelligence, obtain higher detection precision.
The present invention has adopted the equidistant segment data acquisition technique of circumference, uses described current vortex sensor 1 axisBe arranged on main shaft detecting core shaft 8 telescopic mounting frame for sensor 5 in the radial direction, for obtainingThe beat displacement signal pass of the described collection position point of stating main shaft detecting core shaft 8 in respective radial directionBe defeated by described embedded system and process device, described embedded system is processed device to described circular runout dataAnalyze, wherein, described current vortex sensor 1 and reflective photoelectric sensor 2 and main shaft detecting core shaftTest point be contactless state.
Solve the radial beat eccentricity that traditional contact-type detection cannot be under the high dynamical state of main shaft and returnedTurn the problem of accuracy detection, provide structural design data for improving main shaft dynamic accuracy.
To achieve these goals, the invention provides a kind of dynamically spindle rotation accuracy checkout gear.
A kind of dynamically spindle rotation accuracy checkout gear, comprising: telescopic mounting frame for sensor 5, at leastTwo current vortex sensors 1, reflective photoelectric sensor 2 and embedded systems are processed device, described electric whirlpoolFlow sensor 1 and reflective photoelectric sensor 2 are respectively through signal amplifier and FPGA circuit and described embeddingFormula system treating apparatus is connected;
Described reflective photoelectric sensor 2 is arranged in the radial direction telescopic of described main shaft detecting core shaft 8On mounting frame for sensor 5, calibration on described reflective photoelectric sensor 2 and described main shaft detecting core shaft 8The position of reference point is relative, calibrates one of absolute position reference point for obtaining on described main shaft detecting core shaft 8Turn pulse signal, this signal absolute position pulse signal as a reference point after shaping pulse, warpFPGA circuit carries out being transferred to described embedded system processing device, described embedded system after calculation processTreating apparatus carries out speed according to described position signalling to described main shaft detecting core shaft 8 and differentiates verification and arrangeThe circle distribution circular runout data acquisition location point of described main shaft detecting core shaft 8; Its data acquisition location pointCollection starting impulse signal by FPGA circuit according to one turn the pulse period time domain distribute setting value calculate produceRaw, after distributing acquisition pulse to start, time domain carries out the collection of N continuous secondary data, and gather for N time and finish rear waitGather starting impulse next distribution. Segment data continuous acquisition technology is beneficial to and realizes data filtering and preferably locateReason, the precision of data is extracted in guarantee.
The P-pulse feature of its reference point detects one and turns pulse signal function, and therefore this signal is again as turningSpeed detection signal.
Described current vortex sensor 1 axis is arranged at main shaft detecting core shaft 8 telescopic sensing in the radial directionOn device mounting bracket 5, for the described collection position point that obtains described main shaft detecting core shaft 8 radially correspondingThe displacement signal be transferred to described embedded system and process device, described embedded system of beating in directionManage device to described circular runout data analysis, wherein, described current vortex sensor 1 and reflecting lightElectric transducer 2 is contactless state with the test point of main shaft detecting core shaft.
Solve the radial beat eccentricity that traditional contact-type detection cannot be under the high dynamical state of main shaft and returnedTurn the problem of accuracy detection, provide structural design data for improving main shaft dynamic accuracy.
Adopt current vortex sensor, be contactless state with test point, realized under high-speed motion stateAccurate main shaft carries out circular runout detection.
Described dynamic spindle rotation accuracy checkout gear, preferred, described current vortex sensor comprises: instituteStating current vortex sensor 1 is two, and described two current vortex sensor 1 quadrature arrangement are in main shaft detecting core shaftOn 8 telescopic mounting frame for sensor 5 in the radial direction, be respectively used to obtain main shaft 7 directions X andThe Y-direction displacement signal of beating.
Solve the radial beat eccentricity that traditional contact-type detection cannot be under the high dynamical state of main shaft and returnedTurn the problem of accuracy detection, provide structural design data for improving main shaft dynamic accuracy.
Described dynamic spindle rotation accuracy checkout gear, preferred, comprising: current vortex sensor 1 coilOverall diameterThe detection faces 0.5mm of current vortex sensor 1 tip to face distance main shaft detecting core shaft 8, andIn range, carry out multiple point distance measurement calibration.
By the current vortex sensor mounting distance of definite 0.5mm, and in range, carry out multiple point distance measurementCalibration, can collect and detect accurately data.
Described dynamic spindle rotation accuracy checkout gear, preferred, also comprise precise and stable CFCurrent vortex sensor sinusoidal excitation signal source.
Described dynamic spindle rotation accuracy checkout gear, preferred, calibration on described main shaft detecting core shaft 8Reference point is reflective pad pasting 3, and described reflective photoelectric sensor is according to the position acquisition of the reflective pad pasting 3 of main shaftThe detection periphery absolute position reference point of main shaft detecting core shaft, using position reference point as detecting the every of rotating speedOne turns the initial reference point of pulse signal, determines on detection periphery and adopts for uniform 72 according to initial reference pointThe absolute collection position of collection point, the system of being convenient to is sent the collection starting impulse of corresponding collection point. Absolute position ginsengIts feature of examination point detects one and turns pulse signal function, and therefore this signal is again as rotary speed detecting signal.
Described dynamic spindle rotation accuracy checkout gear, preferred, described embedded system is processed device bagDraw together: on described main shaft detecting core shaft 8, calibrating reference point is reflective pad pasting 3, described reflective photoelectric sensorAccording to the detection periphery absolute position reference point of the position acquisition main shaft detecting core shaft of the reflective pad pasting 3 of main shaft,Each using position reference point as detection rotating speed turns the initial reference point of pulse signal, according to initial reference pointDetermine the absolute collection position that detects uniform 72 collection points on periphery, limited by A/D conversion speed, adoptCollection point closeness can and detect resolving accuracy according to the speed of mainshaft and require to set tune in test parameterWhole.
Described dynamic spindle rotation accuracy checkout gear, preferred, described embedded system is processed device bagDraw together: FPGA circuit, two high-speed a/d converters, memory, flush bonding processor, touch-control liquidBrilliant screen and data Peripheral Interface, wherein X is to current vortex sensor and Y-direction current vortex sensor signal differenceConnect two high-speed a/d converters, X is produced to current vortex sensor and Y-direction current vortex sensorSinusoidal excitation detection signal variable amplify through binary channels amplification, detection, programme-controlled gain advance signal respectivelyAfter after conditioning, inputs respectively two high-speed a/d converters, two high-speed a/d converters and embedded processingDevice connects, and reflective photoelectric sensor connects Schmidt's shaping buffer circuit, described Schmidt's shaping isolation electricityRoad connects flush bonding processor interface through FPGA circuit, and flush bonding processor arranges memory stores and detects letterNumber, flush bonding processor arranges data Peripheral Interface connection external equipment data is transmitted, andThe data of flush bonding processor institute record analysis are connected to touch liquid crystal screen and show, shield by touch liquid crystalSystematic parameter and control system operation are set.
The data that obtain by above-mentioned instrument and waveform, shielded and be shown to user by touch liquid crystal, makes userCollection situation and the wave character of understanding data that can be more visual and clear, and dynamic main shaft diameter is jumped and detectedDevice is adjusted calibration.
Described dynamic spindle rotation accuracy checkout gear, preferred, described touch liquid crystal screen comprises: described inTouch liquid crystal screen connects flush bonding processor, by dynamic tracing display major axis X, Y-direction circular runout waveformWith amplitude and rotating speed, and by flush bonding processor matching main shaft absolute position rotating accuracy error curve.
In sum, owing to having adopted technique scheme, the invention has the beneficial effects as follows: solved traditionContact-type detection cannot turn round in radial beat eccentricity and main shaft absolute position under the high dynamical state of main shaftThe problem of accuracy detection, provides structural design data for improving main shaft dynamic accuracy. Dynamically spindle rotation accuracyCheckout gear has adopted the equidistant segment data acquisition technique of circumference, judges displacement with Duan Weidian. Divide in time domainJoin after acquisition pulse starts and carry out the inferior collection of N continuous, N collection finishes the rear wait next one and distributes collection to openArtery punching. Segment data continuous acquisition technology is beneficial to and realizes data filtering preferred process, guarantee extraction dataPrecision.
Be particularly suitable for grinding machine tool, the precision high speed chief axis of the plant equipment such as high-speed main spindle machining centerChecking of dynamic accuracy and basis research and development test, manufacture and provide one for the research and development of high accuracy (precision) machine toolPlant the detection record precision instrument of easy operating. The technology of the present invention purposes is comparatively extensive, and has the dress of collectionPut the feature that simple installation and processing safety are high, use, easy to carry, has its promotional value. Adopt anti-Penetrate formula photoelectric sensor mode and obtain data acquisition POS INT point on circumference, there is harvester simple installationThe feature high with processing safety. The technology has adopted circumference two dimension absolute position pointwise acquisition technique, canWith matching rotating accuracy error curve, contribute to analyze the at a high speed dynamic frequency domain distribution of amplitudes of main shaft and turn errorCharacteristic, optimizing structure design.
Brief description of the drawings
Fig. 1 is the dynamic spindle rotation accuracy checkout gear of the present invention sensor fixing structure schematic diagram;
Fig. 2 is the dynamic spindle rotation accuracy checkout gear of the present invention installation of sensors A-A direction schematic diagram;
Fig. 3 is the dynamic spindle rotation accuracy structure of the detecting device of the present invention theory diagram.
Detailed description of the invention
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, wherein certainlyBeginning to whole same or similar label represents same or similar element or has the unit of identical or similar functionsPart. Exemplary below by the embodiment being described with reference to the drawings, only for explaining the present invention, and can notBe interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " longitudinally ", " laterally ", " on ", D score, " front ",The orientation of the instruction such as " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward " or positionPutting pass is based on orientation shown in the drawings or position relationship, is only that the present invention for convenience of description and simplification are retouchedState, instead of instruction or hint indication device or element must there is specific orientation, with specific orientationStructure and operation, therefore can not be interpreted as limitation of the present invention.
In description of the invention, unless otherwise prescribed and limit, it should be noted that, term " installation "," be connected ", " connection ", " connection " should be interpreted broadly, and for example, can be mechanical connection or electrical connection, alsoCan be the connection of two element internals, can be to be directly connected, also can indirectly be connected by intermediary,For the ordinary skill in the art, can understand as the case may be specifically containing of above-mentioned termJustice.
The present invention has adopted current vortex sensor as microspur variation sensing device, completes contactless displacement letterNumber gather; Because current vortex sensor and test point are contactless state, and meet and detect target velocity spyLevy response requirement, avoided the added influence that under motion state, contact friction brings, so measurement data is trueAccurately, solve conventional instrument measuring technique Detection task in the cards hardly. The technology is put signalGreatly, data acquisition, data processing etc. are integrated into Embedded micro-system. Equidistant circumference two-dimentional collection signal is intendedBe combined into rotating accuracy error curve, print and provide examining report, realize detect high dynamically main shaft circular runout andThe data acquisition of rotating accuracy and data analysis technique.
As shown in Figure 1, a kind of dynamically main shaft absolute position rotating accuracy detecting device, comprising: at least twoCurrent vortex sensor 1, reflective photoelectric sensor 2 and embedded system are processed device, and described current vortex passesSensor 1 and reflective photoelectric sensor 2 are respectively through signal amplification circuit and FPGA circuit and described embeddedSystem treating apparatus is connected,
Described reflective photoelectric sensor 2 is arranged in the radial direction telescopic of described main shaft detecting core shaft 8On mounting frame for sensor 5, calibration on described reflective photoelectric sensor 2 and described main shaft detecting core shaft 8The position of reference point is relative, for obtaining the absolute position one of calibrating reference point on described main shaft detecting core shaft 8Turn pulse signal and described position one is turned to pulse signal and after FPGA processing of circuit, be transferred to described embeddingFormula system treating apparatus, described embedded system is processed device and according to described position signalling, described main shaft is detectedThe circular runout data acquisition location point of described main shaft detecting core shaft 8 is calibrated and arranged to mandrel 8; Its numberTurning pulse period calculating by FPGA circuit according to one according to the collection starting impulse signal of collection position point produces;The collection starting impulse signal enabling 2 passage high-speed a/d electricity of the data acquisition location point that FPGA circuit distributesRoad completes analog-to-digital conversion; Main shaft 7 is wider than main shaft detecting core shaft 8, and main shaft 7 outsides are coated spindle jacket 6,Spindle jacket 6 passes telescopic mounting frame for sensor 5 along spindle jacket 6 by some trip bolts 4Axial direction locking, the coated spindle jacket 6 of telescopic mounting frame for sensor 5 and fixing some current vortexsThe detection faces Y-direction of sensor 1 and reflective photoelectric sensor 2 main shaft detecting core shafts (or X to) electricityEddy current sensor faces direction reflective photoelectric sensor 2 is installed, in the detection faces pair of main shaft detecting core shaftAnswer reflective photoelectric sensor 2 positions to paste the reflective pad pasting 3 of a main shaft, the detection of obtaining main shaft detecting core shaftFace absolute position reference point signal.
The geometric accuracy of main shaft detecting core shaft 8 must meet accuracy of detection class requirement.
Adopt FPGA circuit work in coordination with processing in real time, can further improve system response time, withUnder the high current intelligence of main shaft, obtain higher detection accuracy.
The present invention has adopted the equidistant segment data acquisition technique of circumference, after time domain distributes acquisition pulse to startCarry out N continuous time and gather, N collection finishes rear wait and gathers starting impulse next distribution. Segmentation is adoptedCollection data are put into buffer area, then concentrate and carry out software filtering processing, in conjunction with median method and method of average extraction pointSegment data, obtains higher detection accuracy.
Described current vortex sensor 1 axis is arranged at main shaft detecting core shaft 8 telescopic sensing in the radial directionOn device mounting bracket 5, for the described collection position point that obtains described main shaft detecting core shaft 8 radially correspondingThe displacement signal be transferred to described embedded system and process device, described embedded system of beating in directionManage device to described circular runout data analysis, wherein, described current vortex sensor 1 and reflecting lightElectric transducer 2 is contactless state with the test point of main shaft detecting core shaft.
Solve the radial beat eccentricity that traditional contact-type detection cannot be under the high dynamical state of main shaft and returnedTurn the problem of accuracy detection, provide structural design data for improving main shaft dynamic accuracy.
Adopt current vortex sensor, be contactless state with test point, realized under high-speed motion stateAccurate main shaft carries out circular runout detection.
Fig. 2 is the cutaway view of A-A direction in Fig. 1, can show more clearly the position relationship of each parts.
Described dynamic main shaft diameter is to jitter detection apparatus, and preferred, described current vortex sensor comprises: useTwo current vortex sensor 1 axis are made quadrature arrangement in main shaft detecting core shaft 8 radial direction, obtain respectively masterThe directions X of axle 7 and the Y-direction displacement signal of beating, the main shaft detecting core shaft 8 that current vortex sensor detectsDirections X and the Y-direction directions X of displacement signal and main shaft 7 and the Y-direction displacement signal phase of beating of beatingWith.
Solve traditional contact-type detection and cannot measure asking of the radial beat eccentricity of main shaft under height is dynamicTopic, provides structural design data for improving main shaft dynamic accuracy.
Described dynamic spindle rotation accuracy checkout gear, preferred, comprising: current vortex sensor 1 coilOverall diameterThe detection faces 0.5mm of current vortex sensor 1 tip to face distance main shaft detecting core shaft 8.
Resolution ratio: 0.0001mm;
Amplitude range: peak-to-peak value=0.2mm;
Response speed: rotating speed of target Max:15000r/min;
By the mounting distance of definite 0.5mm, and in range, carry out multiple point distance measurement calibration, Neng GoushouCollection detects data accurately.
Described dynamic spindle rotation accuracy checkout gear, preferred, the detection faces Y of main shaft detecting core shaftFace direction to (or X to) current vortex sensor reflective photoelectric sensor 2 is installed, examine at main shaftSurvey the corresponding reflective photoelectric sensor of detection faces 2 positions of mandrel and paste the reflective pad pasting 3 of a main shaft, obtain masterThe detection faces absolute position reference point signal of axle detecting core shaft, reflective pad pasting 3 positions are reference point locations.As uniform 72 collection points on definite detection periphery, (collection point closeness can turn according to main shaft this signalSpeed and detection resolving accuracy require to arrange adjustment. ) absolute collection position, the system of being convenient to is sent correspondenceThe collection starting impulse of collection point. Its feature of this signal detects one and turns pulse signal function, therefore this signalDetect pulse counting signal as rotating speed again. In the time that the speed of mainshaft is higher, can consider relative with reflective pad pasting 3Direction subsides one act on the no-reflection counterweight pad pasting of balance.
As shown in Figure 3, described dynamic spindle rotation accuracy checkout gear, preferred, described embedded systemBulk cargo is put and is comprised: FPGA circuit, high-speed a/d converter, memory, 32 flush bonding processors,Touch liquid crystal screen and data Peripheral Interface, wherein X connects to current vortex sensor and Y-direction current vortex sensorConnect high-speed a/d converter, the sine that X is inducted to current vortex sensor and Y-direction current vortex sensorExcitation detection variable signal (main shaft dynamic displacement) is preposition through 2 passage amplifications, detection, programme-controlled gainSignal is sent into respectively 2 high-speed a/d converters after amplifying conditioning, adopts gain-programmed amplifier to be convenient to rootAdopt adjustment System parameter to change amplifier gain according to signal amplitude size (displacement) and reach change rangeThe object of multiplying power, makes operation more easy.
Adopting 2 A/D converters to work alone can enter than carrying out acquisition time with 1 A/D converterOne step improves system processing speed, the technical requirement detecting to meet high-speed main spindle high accuracy.
High-speed a/d converter will obtain data and hand over flush bonding processor computing; Reflection-type photoelectric sensingDevice connects schmidt shaping circuit and carries out signal processing, obtains good noiseproof feature and forward position is extremely steep with thisPulse, with absolute reference position accurately on repeated obtain periphery, ensure on circumference collection face uniformThe absolute collection position accuracy of 72 collection points; For ensureing 72 even main shafts that are distributed in of data collection position pointOn detecting core shaft circumference anchor ring, the collection starting impulse signal of its 72 data collection position points is by FPGACircuit turns pulse period time domain Distribution Calculation according to 1 and produces. Each cycle is carried out refresh process, avoids tiredLong-pending effect. Adopt FPGA circuit to carry out associated treatment, can further improve system response time, to obtainGet the detection accuracy that main shaft runs up under state. Collection point closeness also can be according to the speed of mainshaft and inspectionSurvey the actual conditions such as resolving accuracy requirement adjustment is set.
Carry out polar coordinates matching computing under high speed conditions time, should consider that comprehensive lag time is to absolute positionBias effect.
Described Schmidt's shaping buffer circuit connects FPGA circuit, connects embedded system again. Embedded placeReason device arranges memory stores detection signal data, and flush bonding processor arranges data Peripheral Interface and connects outsideEquipment transmits data, and the data of flush bonding processor institute record analysis are connected to touch liquid crystal screenShow, and shield to arrange systematic parameter and control system operation by operation touch liquid crystal.
The data that obtain by above-mentioned instrument, are shielded and are shown to user by touch liquid crystal, make the user can be moreThe collection situation of visual and clear understanding data and main shaft dynamic waveform, and to dynamic main shaft circular runout inspectionSurvey device and adjust calibration.
Described dynamic spindle rotation accuracy checkout gear, preferred, described memory comprises: SDRAM,And FLASH. Reflective photoelectric sensor connects schmidt shaping circuit and carries out signal processing, obtains with thisThe pulse that good noiseproof feature and forward position are extremely steep, with absolute reference position accurately on repeated obtain peripheryPut, ensure the absolute collection position accuracy of 72 collection points uniform on circumference collection face; Described execute closeSpecial shaping buffer circuit connects FPGA circuit. FPGA circuit connects flush bonding processor. Embedded processingDetection data are sent to corresponding SDRAM and FLASH by device, entered by SDRAM and FLASHCalling of row data.
Use the detection data of described memory stores to carry out safely and effectively follow-up analyzing and processing, makeDescribed device stable operation.
Described dynamic spindle rotation accuracy checkout gear, preferred, described data Peripheral Interface comprises:Jtag interface, USB interface, RS232 interface and SD card interface. Circular runout data after detection passEnter after flush bonding processor, enter by USB interface, RS232 interface and SD card interface and external equipmentRow connects, and each interface described above is according to transmission conditions, and the model difference of external equipment medium, by usingFamily is selected to install. Jtag interface is for system debug.
Use described data Peripheral Interface transmission data, play the effect to peripheral hardware transmission data of safety and stabilityWith extension storage capacity.
Described dynamic spindle rotation accuracy checkout gear, preferred, described touch liquid crystal screen comprises: described inTouch liquid crystal screen connects embedded system, by dynamic tracing display major axis X, Y-direction radial beat eccentricity waveformWith amplitude and rotating speed, and by flush bonding processor matching main shaft absolute position rotating accuracy error curve.
Described dynamic spindle rotation accuracy checkout gear, preferred, described analogue amplifier, photoelectric couplingDevice, digital circuit, A/D change-over circuit are all high-speed type device, want to meet detection system response speedAsk.
In sum, owing to having adopted technique scheme, the beneficial effect of the technology is: solved biographySystem contact-type detection cannot turn round essence in radial beat eccentricity and absolute position under the high dynamical state of main shaftThe problem that degree detects, provides structural design data for improving main shaft dynamic accuracy. Dynamically spindle rotation accuracy inspectionSurvey device and adopted the equidistant segment data acquisition technique of circumference, judge displacement with Duan Weidian. Distribute in time domainAcquisition pulse is carried out N continuous time collection after starting, N collection finishes rear wait and gather startup next distributionPulse. Segment data continuous acquisition technology is beneficial to and realizes data filtering preferred process, ensures to extract the essence of dataAccuracy.
Be particularly suitable for grinding machine tool, the precision high speed chief axis of the plant equipment such as high-speed main spindle machining centerChecking of dynamic accuracy and basis research and development test, manufacture and provide one for the research and development of high accuracy (precision) machine toolThe detection record precision instrument of kind of easy operating, and there is harvester simple installation and processing safety highFeature. The technology purposes is comparatively extensive, and use, easy to carry, has its promotional value.
In the description of this description, reference term " a kind of preferred embodiment ", " embodiment ", " oneA little embodiment ", the description of " example ", " concrete example " or " some examples " etc. mean in conjunction with this embodiment orExample describe specific features, structure, material or feature be contained at least one embodiment of the present invention orIn example. In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodimentOr example. And specific features, structure, material or the feature of description can be at any one or manyIn individual embodiment or example with suitable mode combination.
Although illustrated and described embodiments of the invention, those of ordinary skill in the art can manageSeparate: in the situation that not departing from principle of the present invention and aim can to these embodiment carry out multiple variation,Amendment, replacement and modification, scope of the present invention is limited by claim and equivalent thereof.
Claims (6)
1. a dynamic spindle rotation accuracy checkout gear, is characterized in that, comprising: telescopic sensorMounting bracket (5), at least two current vortex sensors (1), reflective photoelectric sensor (2) and embeddingFormula system treating apparatus, described current vortex sensor (1) and reflective photoelectric sensor (2) are respectively through letterNumber amplifier and FPGA circuit and described embedded system are processed device and are connected;
Described reflective photoelectric sensor (2) is arranged at described main shaft detecting core shaft (8) in the radial directionTelescopic mounting frame for sensor (5) is upper, and described reflective photoelectric sensor (2) detects with described main shaftThe position of the upper calibration of mandrel (8) reference point is relative, for obtaining the upper calibration of described main shaft detecting core shaft (8)The absolute position one of reference point turns pulse signal, this signal after shaping pulse as the reference of absolute positionPoint pulse signal is transferred to described embedded system and processes device after FPGA circuit carries out calculation process,Described embedded system is processed device and according to the reference point pulse signal of described absolute position, described main shaft is examinedSurvey mandrel (8) and carry out circle distribution that speed differentiates verification and described main shaft detecting core shaft (8) is set radiallyThe data acquisition location point of beating; The collection starting impulse signal of its data acquisition location point is by FPGA circuit rootTurn pulse period time domain according to one and distribute setting value to calculate generation, the reference point pulse signal of its absolute position has inspectionGo out one and turn pulse signal function, therefore this signal is again as rotary speed detecting signal;
Described current vortex sensor (1) axis is arranged at main shaft detecting core shaft (8) sleeve in the radial directionFormula mounting frame for sensor (5) is upper, for obtaining the described collection position of described main shaft detecting core shaft (8)The beat displacement signal be transferred to described embedded system process device of point in respective radial direction, described inEmbedded system is processed device to described circular runout data analysis, wherein, and described current vortex sensor(1) and the test point of reflective photoelectric sensor (2) and main shaft detecting core shaft be contactless state.
2. dynamic spindle rotation accuracy checkout gear according to claim 1, is characterized in that instituteStating current vortex sensor (1) is two, and described two current vortex sensors (1) quadrature arrangement is examined in main shaftSurvey mandrel (8) telescopic mounting frame for sensor (5) in the radial direction upper, be respectively used to obtain main shaft(7) directions X and the Y-direction displacement signal of beating.
3. dynamic spindle rotation accuracy checkout gear according to claim 1, is characterized in that, bagDraw together: current vortex sensor (1) coil overall diameterCurrent vortex sensor (1) tip to face distance main shaftThe detection faces 0.5mm of detecting core shaft (8), and in range, carry out multiple point distance measurement calibration calibrating.
4. dynamic spindle rotation accuracy checkout gear according to claim 1, is characterized in that instituteStating the upper calibration of main shaft detecting core shaft (8) reference point is reflective pad pasting (3), described reflective photoelectric sensorAccording to the detection periphery absolute position reference of the position acquisition main shaft detecting core shaft of the reflective pad pasting of main shaft (3)Point, each using position reference point as detection rotating speed turns the initial reference point of pulse signal, according to initial ginsengExamination point is determined the absolute collection position that detects uniform 72 collection points on periphery; Limit by A/D conversion speedSystem, collection point closeness requires to set tune in test parameter according to the speed of mainshaft and detection resolving accuracyWhole.
5. dynamic spindle rotation accuracy checkout gear according to claim 1, is characterized in that instituteStating embedded system processes device and comprises: FPGA circuit, two high-speed a/d converters, memory,Flush bonding processor, touch liquid crystal screen and data Peripheral Interface, wherein X is to current vortex sensor and Y-directionCurrent vortex sensor signal connects respectively two high-speed a/d converters, by X to current vortex sensor and YThe sinusoidal excitation detection signal variable producing to current vortex sensor pass through respectively binary channels amplification, detection,Programme-controlled gain advance signal is inputted respectively two high-speed a/d converters, two high-speed a/ds after amplifying conditioningConverter is connected with flush bonding processor, and reflective photoelectric sensor connects Schmidt's shaping buffer circuit, instituteState Schmidt's shaping buffer circuit and connect flush bonding processor interface through FPGA circuit, flush bonding processor is establishedPut memory stores detection signal data, flush bonding processor arranges data Peripheral Interface connection external equipment willData are transmitted, and the data connection touch liquid crystal screen of flush bonding processor institute record analysis is shownShow, shield systematic parameter and control system operation are set by touch liquid crystal.
6. dynamic spindle rotation accuracy checkout gear according to claim 5, is characterized in that instituteState touch liquid crystal screen and connect flush bonding processor, by dynamic tracing display major axis X, Y-direction circular runout rippleShape and amplitude and rotating speed, and process matching demonstration main shaft absolute position revolution essence by embedded system deviceDegree error curve.
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| CN201310585077.5A CN103644875B (en) | 2013-11-19 | 2013-11-19 | A kind of dynamically spindle rotation accuracy checkout gear |
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| CN104942655A (en) * | 2015-07-20 | 2015-09-30 | 徐文欢 | Main shaft rotary error accuracy testing device |
| CN105108581A (en) * | 2015-09-29 | 2015-12-02 | 爱佩仪中测（成都）精密仪器有限公司 | Numerically-controlled machine tool spindle rotation precision verifying unit |
| CN105108582A (en) * | 2015-09-29 | 2015-12-02 | 爱佩仪中测（成都）精密仪器有限公司 | Device beneficial to shortening thermal deformation analyzing cycle of machine tool spindle |
| CN105181319A (en) * | 2015-09-29 | 2015-12-23 | 爱佩仪中测（成都）精密仪器有限公司 | Spindle dynamic error and thermal deformation analyzer |
| CN105115729A (en) * | 2015-09-29 | 2015-12-02 | 爱佩仪中测（成都）精密仪器有限公司 | Spindle deformation analysis device |
| CN105222694A (en) * | 2015-11-04 | 2016-01-06 | 上海电气电站设备有限公司 | The device and method that the rotating shaft of a kind of non-contact measurement large deflection is beated |
| CN106168464A (en) * | 2016-07-10 | 2016-11-30 | 哈尔滨理工大学 | A kind of main shaft dynamic rotation method for testing precision based on machine vision |
| CN106826394B (en) * | 2017-02-26 | 2018-12-28 | 邵阳学院 | Lathe main shaft diameter is to glitch detection method and device under machining state |
| JP6530780B2 (en) * | 2017-05-16 | 2019-06-12 | ファナック株式会社 | Display device and processing system for oscillating cutting |
| CN109781042B (en) * | 2018-12-21 | 2021-01-19 | 西安交通大学 | Main shaft rotation error measuring device |
| CN111457841A (en) * | 2020-06-05 | 2020-07-28 | 上海电气电站设备有限公司 | Continuous measuring method for runout of rotating body and centering measuring method for rotating body |
| CN112846938B (en) * | 2021-01-05 | 2022-09-16 | 北京信息科技大学 | Main shaft rotation precision degradation traceability system under cutting working condition |
| CN113250976B (en) * | 2021-05-24 | 2022-08-30 | 合肥工业大学 | Device and method for detecting and controlling radial runout of main shaft of canned motor pump and canned motor pump |
| CN114152237A (en) * | 2021-11-26 | 2022-03-08 | 珠海格力电器股份有限公司 | Monitoring device based on radial error of main shaft |
| CN114070000A (en) * | 2021-11-30 | 2022-02-18 | 浙江水泵总厂有限公司 | Brushless synchronous generator structure and generator with same |
| CN115541225B (en) * | 2022-10-29 | 2023-09-05 | 通用技术集团机床工程研究院有限公司 | Method and system for analyzing online precision of spindle of ultra-precise machine tool |
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| CN103231279A (en) * | 2013-05-04 | 2013-08-07 | 北京工业大学 | Testing device of machine tool spindle dynamics of numerically-controlled machine tool in cutting state |
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