CN201573116U - Cylindrical grinding process multi-parameter real-time monitoring device - Google Patents

Cylindrical grinding process multi-parameter real-time monitoring device Download PDF

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Publication number
CN201573116U
CN201573116U CN2009201974208U CN200920197420U CN201573116U CN 201573116 U CN201573116 U CN 201573116U CN 2009201974208 U CN2009201974208 U CN 2009201974208U CN 200920197420 U CN200920197420 U CN 200920197420U CN 201573116 U CN201573116 U CN 201573116U
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CN
China
Prior art keywords
transducer
preamplifier
power supply
constant current
grinding
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Expired - Fee Related
Application number
CN2009201974208U
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Chinese (zh)
Inventor
余忠华
杨振生
郑乾
汪虹
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MOS Group Corporation Limited
Zhejiang University ZJU
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MOSHI GROUP CO Ltd NINGBO CITY
Zhejiang University ZJU
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Priority to CN2009201974208U priority Critical patent/CN201573116U/en
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Publication of CN201573116U publication Critical patent/CN201573116U/en
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Abstract

The utility model discloses a cylindrical grinding process multi-parameter real-time monitoring device. A signal acquisition device includes a power transducer, a displacement transducer, an acceleration transducer and an acoustic emission transducer. A filter amplifier includes an acquisition board, a constant current adapter, a preamplifier and a preamplifier power supply separation annunciator. The power transducer is connected with a distribution terminal board. The displacement transducer is connected with the acquisition board. The acceleration transducer is connected with the constant current adapter. The acoustic emission transducer is connected with the preamplifier which is connected with the preamplifier power supply separation annunciator. The acquisition boar, the constant current adapter and the preamplifier power supply separation annunciator are respectively connected with the distribution terminal board which is connected with a data acquisition card. The data acquisition card is connected with a signal analysis and display device. The monitoring device can monitor grinding wheel feeding displacement, main motor power, grinding head vibration and grinding area acoustic emitting signals during grinding in real time, and output waveform of the signals to the display device.

Description

Cylindricalo grinding process multi-parameter real-time monitoring device
Technical field
The utility model relates to emery wheel feeding displacement, grinding machine main motor current, emery wheel vibratory output and the grinding area acoustic emission of a kind of grinding machine to foreign round when grinding and carries out the real-time device for monitoring of multi-parameter.
Background technology
Cylindricalo grinding plays crucial effects as the accurately machined critical process of axial workpiece to guaranteeing its crudy, thereby people's attention extremely.Advanced numerical control cylindrical grinder has significantly reduced operator's intervention degree, thereby has avoided many people because of error, has stablized crudy.
Yet, because the quality influence of grinding process is extremely complicated, all multifactor influences such as workpiece quality to be ground, emery wheel and frock wearing and tearing, thermal deformation, electromagnetic interference and the variation of grinding machine dynamic characteristic be can be subjected to inevitably, the stability of processing or the uniformity of quality are difficult to remain.Thereby, to the study on monitoring of grinding process state parameter, become the focus that people pay close attention to, some solutions are proposed.Prior art has proposed the monitoring scheme of feeding grinder displacement and main motor current; Other has the monitoring scheme of signals such as vibration at abrasive grinding wheel, acoustic emission, and these schemes have all solved the status monitoring problem of grinding process to a certain extent, but also all exist some limitation.As the former more is the monitoring that is conceived to motion state, and the latter mainly is conceived to the monitoring of multidate information, and the latter is only by the state to monitoring emery wheel when judging grinding of vibration, acoustic emission in addition.And concerning grinding process, needing multiple dimensioned, multi-parameter, more fully integrated status monitoring, this is a good problem to study.Yet, still lacking the device or the accessory system that can effectively address this problem in the market, this proposes the important background of this utility model just.
Summary of the invention
The utility model purpose is to provide emery wheel feeding displacement, grinding machine main motor current, emery wheel vibratory output and the grinding area acoustic emission of a kind of grinding machine to foreign round when grinding to carry out real-time device for monitoring.
For achieving the above object, the utility model adopts following technical scheme: this cylindricalo grinding process multi-parameter real-time monitoring device mainly comprises signal pickup assembly, filtering and amplifier, distributing terminal block, data collecting card and signal analysis and display unit; Described signal pickup assembly comprises power sensor, displacement transducer, acceleration transducer and calibrate AE sensor; Described filtering and amplifier comprise collection plate, constant current adapter, preamplifier and before put power supply separation signal device; Described power sensor is connected with distributing terminal block; Described displacement transducer is connected with collection plate; Described acceleration transducer is connected with the constant current adapter; Described calibrate AE sensor is connected with preamplifier; Described preamplifier with before put power supply separation signal device and be connected; Described collection plate, constant current adapter, the preceding power supply separation signal device of putting are connected with distributing terminal block respectively; Described distributing terminal block and data acquisition card connection; Described data collecting card is connected with display unit with signal analysis.
Compared with prior art, the beneficial effect that the utlity model has is: the sensor of the utility model device adopts linear displacement differential transformer LVDT, transformer current checkout gear, ICP type piezoelectric acceleration transducer, calibrate AE sensor respectively, after emery wheel feed amount, grinding machine main motor current, emery wheel vibratory output, grinding area acoustic emission signal sensor die analog signal amplify processing through conditioning, through distributing terminal block input data collecting card, data collecting card is stored to the data signal after the conversion in the computer through mould/number conversion.Data collecting card and PC can keep high-speed communication by pci interface.The utility model is by gathering in real time respectively, store the emery wheel feed amount in the grinding process, grinding machine main motor current, emery wheel vibratory output, grinding area acoustic emission signal, enlarged the monitoring range of grinding process state parameter, realize the integrated monitor of its motion state and dynamics state, with reliability and the accuracy that improves its quality-monitoring, judgement, reduce product quality defect quantity and rework rate, reduce the inspection cost of product, improve the qualification rate and the production efficiency of product.
Description of drawings
Fig. 1 is a general structure block diagram of the present utility model;
Fig. 2 is the structured flowchart of emery wheel feeding shift simulation amount collection plate 21;
Fig. 3 is the internal structure block diagram of constant-current source adapter 22;
Fig. 4 is the pinout figure of distributing terminal block 3;
Among the figure: 1, signal pickup assembly, 2, filtering and amplifier, 3, distributing terminal block, 4, data collecting card, 5, signal analysis and display unit, 11, power sensor, 12, displacement transducer, 13, acceleration transducer, 14, calibrate AE sensor, 21, collection plate, 22, the constant current adapter, 23, preamplifier, 24, before put power supply separation signal device, 3, distributing terminal block, 4, data collecting card, 51, signal analysis device, 52, display unit, 221, ICP (piezoelectric transducer of built-in integrated circuit) type acceleration transducer, 222, constant-current source, 223, indicator lamp, 224, high-pass filter, 225, amplifier, 226, low pass filter, 227, amplifier.
The specific embodiment
As shown in Figure 1, the structure of the utility model cylindricalo grinding process multi-parameter real-time monitoring device mainly comprises with the lower part:
1) signal pickup assembly 1: comprise four groups of sensors, be respectively:
Displacement transducer 12 is used to measure the emery wheel feeding displacement transducer of bistrique radial feed displacement, the differential pressure swing type displacement transducer of the LVDT type DG09 that the commercial weight instrument is produced in can adopting.The measurement category of this differential pressure swing type displacement transducer is ± 5mm total kilometres 11mm, front travel 5.1～5.3mm, linearity error ± 0.5%, repeatability error 0.2 μ m, dynamometry 0.7～0.9N.The output of displacement transducer inserts the collection plate 21 in filtering and the amplifier 2.
Power sensor 11 is for being used to measure the main motor current sensor of grinding machine main motor current, can adopt the WBP312P71 type three phases active power isolation sensor of the rich electronics of Mianyang dimension, with power sensor 11 contact grinding machine spindle motor electrical networks, power sensor 11 can be transformed to it DC voltage output (VZ) of standard.The accuracy class of this power sensor 11 is 0.5, and the output nominal value is 0～5V, load capacity 5mA, quiescent current≤35mA, voltage input: 100V～500V, 50Hz.The output of power sensor 11 inserts distributing terminal block 3.
Acceleration transducer 13, be used for measuring the vibration that grinding machine produces at grinding process, the ICP type piezoelectric acceleration transducer KD1005L that can adopt moving electronics Co., Ltd of Yangzhou section to produce, the voltage sensibility 50mV of this sensor installs resonant frequency 28KHz, frequency of utilization scope 0.5～8KHz, the maximum transversal remolding sensitivity is less than 5, maximum range 100g, resolution ratio 0.0006g, appearance and size φ 15 * 33.The output signal of acceleration transducer 13 exports distributing terminal block 3 to through after constant current adapter (being made up of constant-current source, light emitting diode lamp, high-pass filter, amplifier, low pass filter) filtering, amplifying.
Calibrate AE sensor 14 is used to measure the stress wave that grinding area produces the SR150C type calibrate AE sensor that can adopt Beijing Soundwel Technology Co., Ltd. to produce.This sensor is of a size of φ 19 * 19.5, weight 28g, and sheathing material is a stainless steel, and the face of accepting is pottery, and interface position is in the upper surface, and signal frequency range is 60～400KHz, resonant frequency 150KHz, sensitivity is greater than-65dB.Acoustic emission signal successively through the preamplifier 23 in filtering and the amplifier, preceding put 24 processing of power supply separation signal device after, export distributing terminal block 3 to.
2) filtering and amplifier 2: comprising:
Collection plate 21: be used for amount of feeding analog signal is carried out filtering, amplified and handle.Collection plate 21 comprises that the zeroing circuit that is made of capacitor C 3, capacitor C 4, resistance R 9, R10, R11 connects the IN+ end and the IN-end of instrument amplifier INA114 chip; Electric source filter circuit that constitutes by capacitor C 7, C8 and the positive and negative terminal that is connected on the INA114 chip by the electric source filter circuit that capacitor C 5, C6 constitute respectively; The multiplication factor circuit that is made of resistance R 12, R13, R14 is connected on the RA1 end and the RA2 end of INA114 chip; Filter circuit one end that constitutes by capacitor C 9, resistance R 15 and the VREF of INA114 chip end and VO end; The input of collection plate 21 connects displacement transducer 12, and output connects distributing terminal block 3.
Constant current adapter 22: be used for that emery wheel vibratory output analog signal is carried out electric charge and amplify processing.The KD5202 type constant-current source adapter that can adopt moving electronics Co., Ltd of Yangzhou section to produce, as shown in Figure 3, this constant-current source adapter is made up of constant-current source 222, light emitting diode lamp 223, high-pass filter 224, amplifier 225,227, low pass filter 226.Constant current adapter 22 comprises 1 tunnel input channel, in the box body top left hand, adopts the bnc interface form; Output channel is positioned at right side, box body top, adopts bnc interface equally; The gain be respectively * 1 and * 10; Box body panel left side is under-voltage indicator lamp, and the right side is a power supply indicator; The output of constant current adapter 22 connects distributing terminal block 3.
Preamplifier 23 and before put power supply separation signal device 24: be used for the grinding area acoustic emission signal is carried out filtering and amplified and handle, can adopt the supporting PA I molded breadth band preamplifier of producing with Beijing Soundwel Technology Co., Ltd. of SR150C type calibrate AE sensor.The bandwidth of this broadband preamplifier is 10KHz～2MHz, gain 40dB ± 1dB, and dynamic range is greater than 74dB, undistorted output V PpGreater than 13V, maximum output V PpGreater than 20V, maximum input V PpGreater than 200mV, input impedance is greater than 50M Ω, output impedance 50 Ω, input mode is single-ended input, power reguirements 28V direct current 100mA, quiescent current 20～25mA, transmitted pulse output amplitude-24V, transmitted pulse triggering-24V, physical dimension 116 * 36 * 30mm, sheathing material is a cast aluminium, and interface type is BNC.Preamplifier 23 comprises input and output port, and input port connects calibrate AE sensor 14, puts power supply separation signal device 24 before output port connects, and the preceding output of putting power supply separation signal device 24 inserts distributing terminal block 3.
3) distributing terminal block 3: be used for comprise power sensor 11, displacement transducer 12, acceleration transducer 13 and calibrate AE sensor 14 after handling are inputed to data collecting card 4 in four groups of interior sensor signals, distributing terminal block 3 adopts the integrated circuit board supporting with data collecting card 4, and the model of this distributing terminal block 3 can be DIN-68S/1M.Each stitch of terminal board defines as shown in Figure 4, and distributing terminal block 3 comprises one group of input port and output port.The output of collection plate 21 inserts CH0+ and the CH0-on the CON1; Grinding machine main motor current amount analog signal output inserts CH1+ and the CH1-on the CON1; The vibratory output analog signal inserts CH2+ and the CH2-on the CON1 after constant current adapter 22 is handled; The grinding area acoustic emission signal is respectively through preamplifier 23, preceding CH3+ and the CH3-that inserts after power supply separation signal device 24 is handled on the CON1 of putting.Distributing terminal block 3 via the outside 68 pin scsi interfaces output of the industrial standard on the CON3, inserts data collecting card 4 by the parallel 68 pin cables of high density DB68 pin-high density.
4) data collecting card 4: be used to gather power sensor 11, displacement transducer 12, acceleration transducer 13 and calibrate AE sensor 14 these four groups of sensor signals, and four groups of analog signals are carried out mould/number conversion, data are stored to computer.The synchronized sampling multifunctional data acquisition card that data collecting card 4 can adopt Ling Hua science and technology to produce, model is DAQ-2010, can gather the AI passage of 4 difference inputs synchronously, the application of difference input can obtain maximum noise suppressed.Have 12 simulation outputs of 2 passages of waveform generation function, can use simultaneously with the analog input function.More if desired analog input or output channel can be carried out many cards synchronously by SSI (system synchronization interface) bus.Data collecting card 4 can adopt 32 3.3V/5.0V pci bus, the input of 4 passage difference, 14 A/D, the maximum 2MS/s/CH of synchronized sampling rate, every passage can be program control separately, plate carries 8K FIFO, programmable gain 1/2/4/8, transmission means are poll, Scatter/gather DMA, when input mode is bipolar 0-10V/0-5V/0-2.5V/0-1.25V, during one pole be ± 10V/ ± 5V/ ± 2.5V/ ± 1.25V 2 tunnel 12 voltage outputs, 24 8255 able to programme inputing or outputing, 2 passage timing/registers, power supply are 5V/1.82A.Data collecting card 4 is connected with display unit 5 with signal analysis with Standard PC I interface shape.
5) signal analysis and display unit 5: comprise signal analysis device 51 and display unit 52.The data signal of 51 pairs of data capture cards of signal analysis device, 4 inputs is stored, and waveform is exported on the display unit 52.The utility model can use a computer as signal analysis and display unit 5.

Claims (1)

1. a cylindricalo grinding process multi-parameter real-time monitoring device is characterized in that comprising signal pickup assembly (1), filtering and amplifier (2), distributing terminal block (3), data collecting card (4) and signal analysis and display unit (5); Described signal pickup assembly (1) comprises power sensor (11), displacement transducer (12), acceleration transducer (13) and calibrate AE sensor (14); Described filtering and amplifier (2) comprise collection plate (21), constant current adapter (22), preamplifier (23) and before put power supply separation signal device (24); Described power sensor (11) is connected with distributing terminal block (3); Described displacement transducer (12) is connected with collection plate (21); Described acceleration transducer (13) is connected with constant current adapter (22); Described calibrate AE sensor (14) is connected with preamplifier (23); Described preamplifier (23) with before put the power supply separation signal device (24) be connected; Described collection plate (21), constant current adapter (22), the preceding power supply separation signal device (24) of putting are connected with distributing terminal block (3) respectively; Described distributing terminal block (3) is connected with data collecting card (4); Described data collecting card (4) is connected with display unit (5) with signal analysis.
CN2009201974208U 2009-09-28 2009-09-28 Cylindrical grinding process multi-parameter real-time monitoring device Expired - Fee Related CN201573116U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101670553B (en) * 2009-09-28 2012-07-11 浙江大学 External grinding multiparameter integrated quality monitoring device and method
CN103056776A (en) * 2012-11-29 2013-04-24 厦门大学 Data acquisition and transmission synchronization method for grinding machine processing environment monitoring system
CN103786093A (en) * 2014-03-05 2014-05-14 威海华东数控股份有限公司 Graphical detection display method for real-time monitoring of grinding state
CN114354765A (en) * 2021-12-02 2022-04-15 中国核电工程有限公司 Single-channel acoustic emission signal acquisition device for nuclear power station

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101670553B (en) * 2009-09-28 2012-07-11 浙江大学 External grinding multiparameter integrated quality monitoring device and method
CN103056776A (en) * 2012-11-29 2013-04-24 厦门大学 Data acquisition and transmission synchronization method for grinding machine processing environment monitoring system
CN103056776B (en) * 2012-11-29 2015-02-04 厦门大学 Data acquisition and transmission synchronization method for grinding machine processing environment monitoring system
CN103786093A (en) * 2014-03-05 2014-05-14 威海华东数控股份有限公司 Graphical detection display method for real-time monitoring of grinding state
CN114354765A (en) * 2021-12-02 2022-04-15 中国核电工程有限公司 Single-channel acoustic emission signal acquisition device for nuclear power station

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C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee

Owner name: MOS GROUP CO., LTD.

Free format text: FORMER NAME: MOSHI GROUP CO., LTD., NINGBO CITY

CP01 Change in the name or title of a patent holder

Address after: 315201 Guangming Village, Zhenhai District, Zhejiang, Ningbo

Co-patentee after: Zhejiang University

Patentee after: MOS Group Corporation Limited

Address before: 315201 Guangming Village, Zhenhai District, Zhejiang, Ningbo

Co-patentee before: Zhejiang University

Patentee before: Moshi Group Co., Ltd., Ningbo City

C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100908

Termination date: 20110928