CN203615907U - Dynamic spindle revolution precision detection device - Google Patents
Dynamic spindle revolution precision detection device Download PDFInfo
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- CN203615907U CN203615907U CN201320735148.0U CN201320735148U CN203615907U CN 203615907 U CN203615907 U CN 203615907U CN 201320735148 U CN201320735148 U CN 201320735148U CN 203615907 U CN203615907 U CN 203615907U
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Abstract
The utility model discloses a dynamic spindle revolution precision detection device, relating to the field of precision measurement. A plurality of eddy current sensor axles are in orthogonal arrangement in the radial direction of a spindle detection core shaft. The radial direction jumping displacement signal corresponding to the detection core shaft is obtained. A spindle outer sleeve passes through a fixed sleeve through a plurality of fastening screws and is locked and fixed along the axial direction of the spindle outer sleeve. The fixed sleeve coats the spindle outer sleeve and is used for supporting and fixing an eddy current sensor and a reflection type photoelectric sensor. The eddy current sensor and the reflection type photoelectric sensor are connected with an embedded system device which analyzes the collected radial jumping data. The eddy current sensor and the reflection type photoelectric sensor and the detection point of the spindle detection core shaft are in a non-contact state. A problem that a traditional contact type detection device can not measure the radial jumping amount of a spindle in a high speed rotation state and a problem of spindle absolute position revolution precision detection are solved, and structure design data is provided for raising spindle dynamic precision.
Description
Technical field
The utility model relates to precision measurement field, relates in particular to a kind of dynamically spindle rotation accuracy pick-up unit.
Background technology
The diameter run-out of traditional detection main shaft generally adopts contact type measurement, and if clock gauge or the mini-inductance measurement crown are on smooth smooth rotary annular reference field, main shaft is done to carry out radial pulsation measurement under utmost point slow-speed of revolution rotation status.Main shaft, in the time of certain rotation speed operation, just can not correctly read detection data when generally exceeding per minute tens and turning.When main shaft is in the time that more speed is rotated, table gauge head vibration frequency is accelerated, and adds the additional dither impact that friction of motion brings, and its instrument apparent value is without reading meaning.So existing traditional detection technology can only be carried out main shaft diameter to glitch detection under quasi-static situation.
Main shaft is in the time running up work, particularly rotating speed reaches 2000r/min to 10000r/min or when higher, due to factors such as transient equilibrium error, bearing accuracy and processing assembling, influence of thermal deformations, data and actual condition state that its quasistatic is measured have larger difference, and rotating speed enters resonant frequency region situation more very.Cause high dynamic motion accuracy error directly to affect part processing precision.
Existing contactless high dynamic displacement pick-up unit is to adopt separate type functional module or parts to add computing machine to pile up and build formation substantially, generally also to just can complete detection analysis task by special software, and whole detection system to construct cost high, connect comparatively loaded down with trivial detailsly, detect operating process complexity.So under normal circumstances, owing to lacking accurate, comprehensive, the meticulous rotating accuracy data of main shaft under the dynamic work condition state of height, be unfavorable for dynamic technique analysis and the research and development manufacture of high-precision high-speed main shaft.
Utility model content
The utility model is intended at least solve the technical matters existing in prior art, has proposed to special innovation a kind of dynamic spindle rotation accuracy pick-up unit.
A kind of dynamically spindle rotation accuracy pick-up unit, comprise: at least two current vortex sensors 1, reflective photoelectric sensor 2 and embedded systems are processed device, described current vortex sensor 1 with reflective photoelectric sensor 2 respectively through signal amplifier and FPGA(field programmable logic device) logical circuit processes device with described embedded system and is connected
Described reflective photoelectric sensor 2 is arranged on described main shaft detecting core shaft 8 fixed cover 5 in the radial direction, described reflective photoelectric sensor 2 is relative with the position of calibrating reference point on described main shaft detecting core shaft 8, turn pulse signal and described position one is turned to pulse signal and after FPGA processing of circuit, be transferred to described embedded system and process device for obtaining the absolute position one of calibrating reference point on described main shaft detecting core shaft 8, described embedded system is processed device according to the reference point pulse signal of described absolute position, described main shaft detecting core shaft 8 is calibrated and is arranged the diameter run-out data acquisition location point of described main shaft detecting core shaft 8, the collection starting impulse signal of its circumference equidistant position data collection point turns recurrence interval time domain distribution by FPGA circuit according to one calculating generation is set, the collection starting impulse signal enabling 2 passage high-speed a/d circuit of the data acquisition location point that FPGA circuit distributes complete analog to digital conversion.FPGA Circnit Layout has periodic refresh speed discrimination function, only the image data in confirmation velocity range is extracted, and guarantees the multiplicity of each collection position point, makes testing result more accurate.
The utility model adopts described reflective photoelectric sensor mode to obtain data acquisition location point on circumference, than the rotary encoder mode comparison of common employing, to have the advantages that harvester simple installation and processing safety are high.
Gather the system responses requirement of environment for meeting high dynamically high density data, the utility model uses the high real time effect of FPGA circuit to carry out real-time collaborative processing, guarantee the high multiplicity of position, each collection point, to obtain higher detection precision under the high current intelligence of main shaft.
The utility model has adopted the equidistant segment data acquisition technique of circumference, use described current vortex sensor 1 axis to be arranged on main shaft detecting core shaft 8 fixed cover 5 in the radial direction, the displacement signal be transferred to described embedded system and process device of beating for the described collection position point that obtains described main shaft detecting core shaft 8 in respective radial direction, described embedded system is processed device to described diameter run-out data analysis, wherein, described current vortex sensor 1 and reflective photoelectric sensor 2 are contactless state with the check point of main shaft detecting core shaft.
Solve the problem that radial beat eccentricity that traditional contact-type detection cannot be under the high dynamical state of main shaft and rotating accuracy detect, provide structural design data for improving main shaft dynamic accuracy.
To achieve these goals, the utility model provides a kind of dynamic spindle rotation accuracy pick-up unit.
A kind of dynamically spindle rotation accuracy pick-up unit, comprise: telescopic mounting frame for sensor 5, at least two current vortex sensors 1, reflective photoelectric sensor 2 and embedded systems are processed device, described current vortex sensor 1 and reflective photoelectric sensor 2 are processed device through signal amplifier and FPGA circuit and described embedded system respectively and are connected;
Described reflective photoelectric sensor 2 is arranged on described main shaft detecting core shaft 8 telescopic mounting frame for sensor 5 in the radial direction, described reflective photoelectric sensor 2 is relative with the position of calibrating reference point on described main shaft detecting core shaft 8, on described main shaft detecting core shaft 8, calibrate one of absolute position reference point and turn pulse signal for obtaining, this signal absolute position pulse signal as a reference point after shaping pulse, after FPGA circuit carries out calculation process, be transferred to described embedded system and process device, described embedded system is processed device, according to described position signalling, described main shaft detecting core shaft 8 is carried out to the circle distribution diameter run-out data acquisition location point that speed is differentiated verification and described main shaft detecting core shaft 8 is set, the collection starting impulse signal of its data acquisition location point turns recurrence interval time domain by FPGA circuit according to one and distributes setting value to calculate generation, after time domain distributes acquisition pulse to start, carry out the collection of N continuous secondary data, N collection finishes rear wait and gathers starting impulse next distribution.Segment data continuous acquisition technology is beneficial to and realizes data filtering preferred process, guarantees to extract the precision of data.
The P-pulse feature of its reference point detects one and turns pulse signal function, and therefore this signal is again as rotary speed detecting signal.
Described current vortex sensor 1 axis is arranged on main shaft detecting core shaft 8 fixed cover 5 in the radial direction, the displacement signal be transferred to described embedded system and process device of beating for the described collection position point that obtains described main shaft detecting core shaft 8 in respective radial direction, described embedded system is processed device to described diameter run-out data analysis, wherein, described current vortex sensor 1 and reflective photoelectric sensor 2 are contactless state with the check point of main shaft detecting core shaft.
Solve the problem that radial beat eccentricity that traditional contact-type detection cannot be under the high dynamical state of main shaft and rotating accuracy detect, provide structural design data for improving main shaft dynamic accuracy.
Adopt current vortex sensor, be contactless state with test point, realized the accurate main shaft under high-speed motion state is carried out to diameter run-out detection.
Described dynamic spindle rotation accuracy pick-up unit, preferably, described current vortex sensor comprises: described current vortex sensor 1 is two, described two current vortex sensor 1 quadrature arrangement, on main shaft detecting core shaft 8 telescopic mounting frame for sensor 5 in the radial direction, are respectively used to obtain the directions X of main shaft 7 and the Y-direction displacement signal of beating.
Solve the problem that radial beat eccentricity that traditional contact-type detection cannot be under the high dynamical state of main shaft and rotating accuracy detect, provide structural design data for improving main shaft dynamic accuracy.
Described dynamic spindle rotation accuracy pick-up unit, preferred, comprising: current vortex sensor 1 coil overall diameter φ=6mm, the detection faces 0.5mm of current vortex sensor 1 tip-to-face distance main shaft detecting core shaft 8, and in 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 measurement calibration, can collect and detect accurately data.
Described dynamic spindle rotation accuracy pick-up unit, preferably, also comprises the current vortex sensor sinusoidal excitation signal source of precise and stable characteristic frequency.
Described dynamic spindle rotation accuracy pick-up unit, preferably, on described main shaft detecting core shaft 8, calibrating reference point is reflective pad pasting 3, described reflective photoelectric sensor is according 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, determine the absolute collection position that detects uniform 72 collection points on periphery according to initial reference point, the system of being convenient to is sent the collection starting impulse of corresponding collection point.Reference point its feature in absolute position detects one and turns pulse signal function, and therefore this signal is again as rotary speed detecting signal.
Described dynamic spindle rotation accuracy pick-up unit, preferably, described embedded system is processed device and is comprised: on described main shaft detecting core shaft 8, calibrating reference point is reflective pad pasting 3, described reflective photoelectric sensor is according 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, determine the absolute collection position that detects uniform 72 collection points on periphery according to initial reference point, limited by A/D slewing rate, collection point closeness can and detect resolving accuracy according to the speed of mainshaft and require to set adjustment in test parameter.
Described dynamic spindle rotation accuracy pick-up unit, preferably, described embedded system is processed device and is comprised: FPGA circuit, two high-speed a/d converters, storer, flush bonding processor, touch liquid crystal screen and data Peripheral Interface, wherein X is connected respectively two high-speed a/d converters to current vortex sensor with Y-direction current vortex sensor signal, the sinusoidal excitation detection signal variable that X is produced to current vortex sensor and Y-direction current vortex sensor amplifies through binary channels respectively, detection, after after programme-controlled gain advance signal amplification conditioning, input respectively two high-speed a/d converters, two high-speed a/d converters are connected with flush bonding processor, reflective photoelectric sensor connects Schmidt's shaping buffer circuit, described Schmidt's shaping buffer circuit connects flush bonding processor interface through FPGA circuit, flush bonding processor arranges memory stores detection signal data, flush bonding processor arranges data Peripheral Interface connection external unit data is transmitted, and the data connection touch liquid crystal screen of flush bonding processor institute record analysis is shown, shield systematic parameter and control system operation are set by touch liquid crystal.
The data that obtain by above-mentioned instrument and waveform, shielded and be shown to user by touch liquid crystal, makes collection situation and the waveform character of the understanding data that user can be more visual and clear, and dynamic main shaft diameter is jumped to pick-up unit and adjust calibration.
Described dynamic spindle rotation accuracy pick-up unit, preferably, described touch liquid crystal screen comprises: described touch liquid crystal screen connects flush bonding processor, by dynamic tracing display major axis X, Y-direction diameter run-out waveform and amplitude and rotating speed, and by flush bonding processor matching main shaft absolute position rotating accuracy graph of errors.
In sum, owing to having adopted technique scheme, the beneficial effects of the utility model are: solved the problem that radial beat eccentricity that traditional contact-type detection cannot be under the high dynamical state of main shaft and main shaft absolute position rotating accuracy detect, provide structural design data for improving main shaft dynamic accuracy.Dynamically spindle rotation accuracy pick-up unit has adopted the equidistant segment data acquisition technique of circumference, judges displacement with Duan Weidian.After time domain distributes acquisition pulse to start, carry out N continuous time and gather, N collection finishes rear wait and gathers starting impulse next distribution.Segment data continuous acquisition technology is beneficial to and realizes data filtering preferred process, guarantees to extract the precision of data.
Be particularly suitable for grinding machine tool, the checking of dynamic accuracy of the precision high speed chief axis of the plant equipment such as high-speed main spindle machining center and basis research and development test, for the detection record exact instrument that a kind of easy operating is provided is manufactured in the research and development of high precision (precision) machine tool.The utility model technological use is comparatively extensive, and has harvester simple installation and the high feature of processing safety, and use, easy to carry, has its promotional value.Adopt reflective photoelectric sensor mode to obtain data acquisition POS INT point on circumference, have the advantages that harvester simple installation and processing safety are high.The technology has adopted circumference two dimension absolute position pointwise acquisition technique, can matching rotating accuracy graph of errors, contribute to analyze main shaft dynamically frequency domain distribution of amplitudes and turn error characteristic at a high speed, optimizing structure design.
Accompanying drawing explanation
Fig. 1 is the dynamic spindle rotation accuracy pick-up unit of the utility model sensor fixing structure schematic diagram;
Fig. 2 is the dynamic spindle rotation accuracy pick-up unit of the utility model installation of sensors A-A direction schematic diagram;
Fig. 3 is the dynamic spindle rotation accuracy structure of the detecting device of the utility model theory diagram.
Embodiment
Describe embodiment of the present utility model below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, only for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " longitudinally ", " laterally ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", orientation or the position relationship of indications such as " outward " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as restriction of the present utility model.
In description of the present utility model, unless otherwise prescribed and limit, it should be noted that, term " installation ", " being connected ", " connection ", " connection " should be interpreted broadly, for example, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be to be directly connected, and also can indirectly be connected by intermediary, for the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term.
The utility model has adopted current vortex sensor as microspur variation sensing device, completes contactless displacement signals collecting; Because current vortex sensor and test point are contactless state, and meet and detect the requirement of target velocity characteristic response, avoid the added influence that under motion state, contact friction brings, so measurement data true and accurate solves conventional instrument measuring technique Detection task in the cards hardly.Signal amplification, data acquisition, data processing etc. are integrated into Embedded micro-system by the technology.Equidistant circumference two-dimentional collection signal is fitted to rotating accuracy graph of errors, print and provide examining report, realize the data acquisition and the data analysis technique that detect high dynamically main shaft diameter run-out and rotating accuracy.
As shown in Figure 1, a kind of dynamically main shaft absolute position rotating accuracy detecting device, comprise: at least two current vortex sensors 1, reflective photoelectric sensor 2 and embedded systems are processed device, described current vortex sensor 1 is processed device through signal amplification circuit with FPGA circuit and described embedded system respectively with reflective photoelectric sensor 2 and is connected
Described reflective photoelectric sensor 2 is arranged on described main shaft detecting core shaft 8 fixed cover 5 in the radial direction, described reflective photoelectric sensor 2 is relative with the position of calibrating reference point on described main shaft detecting core shaft 8, turn pulse signal and described position one is turned to pulse signal and after FPGA processing of circuit, be transferred to described embedded system and process device for obtaining the absolute position one of calibrating reference point on described main shaft detecting core shaft 8, described embedded system processing device calibrates and arranges the diameter run-out data acquisition location point of described main shaft detecting core shaft 8 to described main shaft detecting core shaft 8 according to described position signalling, the collection starting impulse signal of its data acquisition location point turns recurrence interval calculating by FPGA circuit according to one and produces, the collection starting impulse signal enabling 2 passage high-speed a/d circuit of the data acquisition location point that FPGA circuit distributes complete analog to digital conversion, main shaft 7 is wider than main shaft detecting core shaft 8, main shaft 7 outsides are coated spindle jacket 6, spindle jacket 6 is locked along spindle jacket 6 axial directions through fixed cover 5 by some trip bolts 4, the detection faces Y-direction of the coated spindle jacket 6 of fixed cover 5 and fixing some current vortex sensors 1 and reflective photoelectric sensor 2 main shaft detecting core shafts (or X to) current vortex sensor faces direction reflective photoelectric sensor 2 is installed, the reflective pad pasting 3 of a main shaft is pasted in the corresponding reflective photoelectric sensor of detection faces 2 positions at main shaft detecting core shaft, obtain the detection faces absolute position reference point signal of main shaft detecting core shaft.
The geometric accuracy of main shaft detecting core shaft 8 must meet accuracy of detection class requirement.
Adopt FPGA circuit to work in coordination with in real time and process, can further improve system response time, to obtain higher detection degree of accuracy under the high current intelligence of main shaft.
The utility model has adopted the equidistant segment data acquisition technique of circumference, after time domain distributes acquisition pulse to start, carries out N continuous time and gathers, and N collection finishes rear wait and gather starting impulse next distribution.Segmentation image data is put into buffer area, then concentrate and carry out software filtering processing, extract segment data in conjunction with median method and the method for average, obtain higher detection degree of accuracy.
Described current vortex sensor 1 axis is arranged on main shaft detecting core shaft 8 fixed cover 5 in the radial direction, the displacement signal be transferred to described embedded system and process device of beating for the described collection position point that obtains described main shaft detecting core shaft 8 in respective radial direction, described embedded system is processed device to described diameter run-out data analysis, wherein, described current vortex sensor 1 and reflective photoelectric sensor 2 are contactless state with the check point of main shaft detecting core shaft.
Solve the problem that radial beat eccentricity that traditional contact-type detection cannot be under the high dynamical state of main shaft and rotating accuracy detect, provide structural design data for improving main shaft dynamic accuracy.
Adopt current vortex sensor, be contactless state with test point, realized the accurate main shaft under high-speed motion state is carried out to diameter run-out detection.
Fig. 2 is the cut-open 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, preferably, described current vortex sensor comprises: make quadrature arrangement in main shaft detecting core shaft 8 radial direction with two current vortex sensor 1 axis, obtain respectively the directions X of main shaft 7 and the Y-direction displacement signal of beating, the directions X of the main shaft detecting core shaft 8 that current vortex sensor detects and the Y-direction directions X of displacement signal and main shaft 7 and the Y-direction displacement signal of beating of beating is identical.
Solve traditional contact-type detection and cannot measure the problem of the radial beat eccentricity of main shaft under height is dynamic, provide structural design data for improving main shaft dynamic accuracy.
Described dynamic spindle rotation accuracy pick-up unit, preferred, comprising: the detection faces 0.5mm of current vortex sensor 1 coil overall diameter φ=6mm current vortex sensor 1 tip-to-face distance main shaft detecting core shaft 8.
Resolution: 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, can collect and detect accurately data.
Described dynamic spindle rotation accuracy pick-up unit, preferably, the detection faces Y-direction of main shaft detecting core shaft (or X to) current vortex sensor faces direction reflective photoelectric sensor 2 is installed, the reflective pad pasting 3 of a main shaft is pasted in the corresponding reflective photoelectric sensor of detection faces 2 positions at main shaft detecting core shaft, obtain the detection faces absolute position reference point signal of main shaft detecting core shaft, reflective pad pasting 3 positions are reference point locations.This signal is as determining that (collection point closeness can and detect resolving accuracy according to the speed of mainshaft and require to arrange adjustment in uniform 72 collection points on detection periphery.) absolute collection position, the system of being convenient to is sent the collection starting impulse of corresponding collection point.Its feature of this signal detects one and turns pulse signal function, and therefore this signal detects pulse counting signal as rotating speed again.In the time that the speed of mainshaft is higher, can consider pasting a no-reflection counterweight pad pasting that acts on balance with reflective pad pasting 3 relative directions.
As shown in Figure 3, described dynamic spindle rotation accuracy pick-up unit, preferably, described embedded system device comprises: FPGA circuit, high-speed a/d converter, storer, 32 flush bonding processors, touch liquid crystal screen and data Peripheral Interface, wherein X is connected high-speed a/d converter to current vortex sensor with Y-direction current vortex sensor, the sinusoidal excitation detection variable signal (main shaft dynamic displacement) that X is inducted to current vortex sensor and Y-direction current vortex sensor amplifies through 2 passages, detection, programme-controlled gain advance signal is sent into respectively 2 high-speed a/d converters after amplifying conditioning, adopt gain-programmed amplifier to be convenient to adopt adjustment System parameter to change amplifier gain according to signal amplitude size (displacement) and reach the object that changes range multiplying power, make operation more easy.
Adopt 2 A/D converters to work alone and can further improve system processing speed than carrying out acquisition time with 1 A/D converter, the technical requirement detecting to meet high-speed main spindle high precision.
High-speed a/d converter will obtain data and hand over flush bonding processor computing; Reflective photoelectric sensor connects schmidt shaping circuit and carries out signal processing, obtain the extremely steep pulse of good noiseproof feature and forward position with this, with absolute reference position accurately on repeated obtain periphery, guarantee the absolute collection position accuracy of 72 collection points uniform on circumference collection face; For guaranteeing 72 even being distributed on main shaft detecting core shaft circumference anchor ring of data collection position point, the collection starting impulse signal of its 72 data collection position points turns recurrence interval time domain Distribution Calculation by FPGA circuit according to 1 and produces.Each cycle is carried out refresh process, avoids cumulative effect.Adopt FPGA circuit to carry out associated treatment, can further improve system response time, the detection degree of accuracy running up under state to obtain main shaft.Collection point closeness also can and detect the actual conditions such as resolving accuracy requirement according to the speed of mainshaft adjustment is set.
Carry out polar coordinates matching computing under high speed conditions time, should consider the bias effect of comprehensive retardation time to absolute position.
Described Schmidt's shaping buffer circuit connects FPGA circuit, connects embedded system again.Flush bonding processor arranges memory stores detection signal data, flush bonding processor arranges data Peripheral Interface connection external unit data is transmitted, and the data connection touch liquid crystal screen of flush bonding processor institute record analysis is shown, 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 collection situation and the main shaft dynamic waveform of the understanding data that user can be more visual and clear, and dynamic main shaft diameter is adjusted to calibration to jitter detection apparatus.
Described dynamic spindle rotation accuracy pick-up unit, preferred, described storer comprises: SDRAM and FLASH.Reflective photoelectric sensor connects schmidt shaping circuit and carries out signal processing, obtain the extremely steep pulse of good noiseproof feature and forward position with this, with absolute reference position accurately on repeated obtain periphery, guarantee the absolute collection position accuracy of 72 collection points uniform on circumference collection face; Described Schmidt's shaping buffer circuit connects FPGA circuit.FPGA circuit connects flush bonding processor.Detection data are sent to corresponding SDRAM and FLASH by flush bonding processor, carries out calling of data by SDRAM and FLASH.
Use the detection data of described memory stores can carry out safely and effectively follow-up analyzing and processing, make described device stable operation.
Described dynamic spindle rotation accuracy pick-up unit, preferred, described data Peripheral Interface comprises: jtag interface, USB interface, RS232 interface and SD card interface.Diameter run-out data after detection are imported into after flush bonding processor, be connected with external unit by USB interface, RS232 interface and SD card interface, each interface described above is according to transmission conditions, and the model difference of external unit medium, is selected to install by user.Jtag interface is for system debug.
Use described data Peripheral Interface transmission data, play effect and the extension storage capacity to peripheral hardware transmission data of safety and stability.
Described dynamic spindle rotation accuracy pick-up unit, preferably, described touch liquid crystal screen comprises: described touch liquid crystal screen connects embedded system, by dynamic tracing display major axis X, Y-direction radial beat eccentricity waveform and amplitude and rotating speed, and by flush bonding processor matching main shaft absolute position rotating accuracy graph of errors.
Described dynamic spindle rotation accuracy pick-up unit, preferred, described analogue amplifier, photoelectrical coupler, digital circuit, A/D change-over circuit are all high-speed type device, to meet the requirement of detection system response speed.
In sum, owing to having adopted technique scheme, the beneficial effect of the technology is: solved the problem that radial beat eccentricity that traditional contact-type detection cannot be under the high dynamical state of main shaft and absolute position rotating accuracy detect, provide structural design data for improving main shaft dynamic accuracy.Dynamically spindle rotation accuracy pick-up unit has adopted the equidistant segment data acquisition technique of circumference, judges displacement with Duan Weidian.After time domain distributes acquisition pulse to start, carry out N continuous time and gather, N collection finishes rear wait and gathers starting impulse next distribution.Segment data continuous acquisition technology is beneficial to and realizes data filtering preferred process, guarantees to extract the precision of data.
Be particularly suitable for grinding machine tool, the checking of dynamic accuracy of the precision high speed chief axis of the plant equipment such as high-speed main spindle machining center and basis research and development test, manufacture a kind of detection record exact instrument of easy operating is provided for the research and development of high precision (precision) machine tool, and there is harvester simple installation and the high feature of processing safety.The technology purposes is comparatively extensive, and use, easy to carry, has its promotional value.
In the description of this instructions, the description of reference term " a kind of preferred implementation ", " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.
Although illustrated and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: in the situation that not departing from principle of the present utility model and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present utility model is limited by claim and equivalent thereof.
Claims (6)
1. a dynamic spindle rotation accuracy pick-up unit, it is characterized in that, comprise: telescopic mounting frame for sensor (5), at least two current vortex sensors (1), reflective photoelectric sensor (2) and embedded system are processed device, described current vortex sensor (1) is processed device through signal amplifier with fpga logic circuit and described embedded system respectively with reflective photoelectric sensor (2) and is connected;
Described reflective photoelectric sensor (2) is arranged on described main shaft detecting core shaft (8) telescopic mounting frame for sensor (5) in the radial direction, described reflective photoelectric sensor (2) is relative with the position of the upper calibration of described main shaft detecting core shaft (8) reference point, be used for obtaining the upper absolute position one of calibrating reference point of described main shaft detecting core shaft (8) and turn pulse signal, this signal after shaping pulse as the reference point pulse signal of absolute position, after FPGA circuit carries out calculation process, be transferred to described embedded system and process device, described embedded system is processed device, according to described position signalling, described main shaft detecting core shaft (8) is carried out to the circle distribution diameter run-out data acquisition location point that speed is differentiated verification and described main shaft detecting core shaft (8) is set, the collection starting impulse signal of its data acquisition location point turns recurrence interval time domain by FPGA circuit according to one and distributes setting value to calculate generation, and the P-pulse feature of its reference point detects one and turns pulse signal function, and therefore this signal is again as rotary speed detecting signal,
Described current vortex sensor (1) axis is arranged on main shaft detecting core shaft (8) fixed cover (5) in the radial direction, the beat displacement signal be transferred to described embedded system process device of the described collection position point that is used for obtaining described main shaft detecting core shaft (8) in respective radial direction, described embedded system is processed device to described diameter run-out data analysis, wherein, described current vortex sensor (1) and reflective photoelectric sensor (2) are contactless state with the check point of main shaft detecting core shaft.
2. dynamic spindle rotation accuracy pick-up unit according to claim 1, it is characterized in that, described current vortex sensor (1) is two, described two current vortex sensors (1) quadrature arrangement is upper in main shaft detecting core shaft (8) telescopic mounting frame for sensor (5) in the radial direction, is respectively used to obtain the directions X of main shaft (7) and the Y-direction displacement signal of beating.
3. dynamic spindle rotation accuracy pick-up unit according to claim 1, it is characterized in that, comprise: current vortex sensor (1) coil overall diameter φ=6mm, the detection faces 0.5mm of current vortex sensor (1) tip-to-face distance main shaft detecting core shaft (8), and in range, carry out multiple point distance measurement calibration calibrating.
4. dynamic spindle rotation accuracy pick-up unit according to claim 1, it is characterized in that, the upper calibration of described main shaft detecting core shaft (8) reference point is reflective pad pasting (3), described reflective photoelectric sensor is according to the detection periphery absolute position reference point of the position acquisition main shaft detecting core shaft of the reflective pad pasting of main shaft (3), each using position reference point as detection rotating speed turns the initial reference point of pulse signal, determines the absolute collection position that detects uniform 72 collection points on periphery according to initial reference point; Limited by A/D slewing rate, collection point closeness can and detect resolving accuracy according to the speed of mainshaft and require to set adjustment in test parameter.
5. dynamic spindle rotation accuracy pick-up unit according to claim 1, it is characterized in that, described embedded system is processed device and is comprised: FPGA circuit, two high-speed a/d converters, storer, flush bonding processor, touch liquid crystal screen and data Peripheral Interface, wherein X is connected respectively two high-speed a/d converters to current vortex sensor with Y-direction current vortex sensor signal, the sinusoidal excitation detection signal variable that X is produced to current vortex sensor and Y-direction current vortex sensor amplifies through binary channels respectively, detection, programme-controlled gain advance signal is inputted respectively two high-speed a/d converters after amplifying conditioning, two high-speed a/d converters are connected with flush bonding processor, reflective photoelectric sensor connects Schmidt's shaping buffer circuit, described Schmidt's shaping buffer circuit connects flush bonding processor interface through FPGA circuit, flush bonding processor arranges memory stores detection signal data, flush bonding processor arranges data Peripheral Interface connection external unit data is transmitted, and the data connection touch liquid crystal screen of flush bonding processor institute record analysis is shown, shield systematic parameter and control system operation are set by touch liquid crystal.
6. dynamic spindle rotation accuracy pick-up unit according to claim 5, it is characterized in that, described touch liquid crystal screen comprises: described touch liquid crystal screen connects flush bonding processor, by dynamic tracing display major axis X, Y-direction diameter run-out waveform and amplitude and rotating speed, and process matching demonstration main shaft absolute position rotating accuracy graph of errors by embedded system device.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644875A (en) * | 2013-11-19 | 2014-03-19 | 重庆机床(集团)有限责任公司 | Dynamic spindle rotation precision detection device |
| WO2016127627A1 (en) * | 2015-02-12 | 2016-08-18 | 珠海格力节能环保制冷技术研究中心有限公司 | Eddy current sensor for rotary shaft, and rotary shaft apparatus |
| WO2016188330A1 (en) * | 2015-05-27 | 2016-12-01 | 珠海格力电器股份有限公司 | Shaft position detection device and magnetic levitation motor |
| WO2017012107A1 (en) * | 2015-07-20 | 2017-01-26 | 徐文欢 | Turning error precision testing device for spindle |
| CN110052893A (en) * | 2019-04-12 | 2019-07-26 | 湖北江山华科数字设备科技有限公司 | A kind of main shaft of numerical control machine tool rotating accuracy calibration equipment |
| CN110507290A (en) * | 2019-08-30 | 2019-11-29 | 林丹柯 | Skin smoothness detection device |
| CN114152238A (en) * | 2021-11-03 | 2022-03-08 | 东风汽车集团股份有限公司 | Machining center thermal deformation compensation method, device and equipment and readable storage medium |
-
2013
- 2013-11-19 CN CN201320735148.0U patent/CN203615907U/en not_active Withdrawn - After Issue
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644875A (en) * | 2013-11-19 | 2014-03-19 | 重庆机床(集团)有限责任公司 | Dynamic spindle rotation precision detection device |
| CN103644875B (en) * | 2013-11-19 | 2016-05-04 | 重庆机床(集团)有限责任公司 | A kind of dynamically spindle rotation accuracy checkout gear |
| WO2016127627A1 (en) * | 2015-02-12 | 2016-08-18 | 珠海格力节能环保制冷技术研究中心有限公司 | Eddy current sensor for rotary shaft, and rotary shaft apparatus |
| US10466265B2 (en) | 2015-02-12 | 2019-11-05 | Gree Green Refrigeration Technology Center Co., Ltd. Of Zhuhai | Eddy current sensor for a rotary shaft and rotary shaft apparatus |
| WO2016188330A1 (en) * | 2015-05-27 | 2016-12-01 | 珠海格力电器股份有限公司 | Shaft position detection device and magnetic levitation motor |
| WO2017012107A1 (en) * | 2015-07-20 | 2017-01-26 | 徐文欢 | Turning error precision testing device for spindle |
| CN110052893A (en) * | 2019-04-12 | 2019-07-26 | 湖北江山华科数字设备科技有限公司 | A kind of main shaft of numerical control machine tool rotating accuracy calibration equipment |
| CN110507290A (en) * | 2019-08-30 | 2019-11-29 | 林丹柯 | Skin smoothness detection device |
| CN114152238A (en) * | 2021-11-03 | 2022-03-08 | 东风汽车集团股份有限公司 | Machining center thermal deformation compensation method, device and equipment and readable storage medium |
| CN114152238B (en) * | 2021-11-03 | 2023-10-27 | 东风汽车集团股份有限公司 | Method, apparatus, device and readable storage medium for compensating thermal deformation of machining center |
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