CN104227501A - Testing and analyzing system for rotating errors of main shaft - Google Patents
Testing and analyzing system for rotating errors of main shaft Download PDFInfo
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- CN104227501A CN104227501A CN201410340992.2A CN201410340992A CN104227501A CN 104227501 A CN104227501 A CN 104227501A CN 201410340992 A CN201410340992 A CN 201410340992A CN 104227501 A CN104227501 A CN 104227501A
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- signal
- laser displacement
- main shaft
- displacement sensor
- error
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/24—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves
- B23Q17/2452—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves for measuring features or for detecting a condition of machine parts, tools or workpieces
Abstract
The invention discloses a testing and analyzing system for rotating errors of a main shaft. The testing and analyzing system comprises a hardware part and a software part, wherein the hardware part comprises a bracket or magnetic stand, laser displacement sensors, signal connecting wires, a signal adapter plate and a signal acquisition card, wherein the bracket or magnetic stand is fixedly arranged on the main shaft; the laser displacement sensors and the bracket or magnetic stand are connected to acquire axial displacement runout of the main shaft; the signal output end of each laser displacement sensor is connected with the input end of the signal acquisition card through the signal connecting wire and the signal adapter plate; the signal adapter plate is used for outputting more than two laser displacement sensors according to a unified format; a software system is arranged on a computer; the computer communicates with the output end of the signal acquisition card by using testing software, acquires a displacement signal of each laser displacement sensor, then performs analysis processing on a filtering algorithm and a separation algorithm and separates and displays roundness error and rotating error. According to the testing and analyzing system disclosed by the invention, the roundness error and the rotating error of the main shaft can be acquired quickly and accurately; the testing is simple and practical.
Description
Technical field
The invention belongs to spindle rotation error technical field of measurement and test, particularly relate to a kind of spindle rotation error detecting and analysing system.
Background technology
Spindle rotation error is the critical index weighing dynamic characteristics of spindle system, directly affects the working motion of lathe, the surface quality of processing work.Correlative study result shows: the deviation from circular from about 30% ~ 70% of high-speed high-precision lathe turnery processing is caused by turn error, and the precision of lathe is higher, and the ratio shared by turn error is higher.Can workpiece produces under predicted ideal processing conditions minimum shape error and surface roughness by the motion of test spindle rotation error; And according to turn error characteristic, lathe running status can be judged and carry out fault diagnosis.The shape of simultaneously main shaft gyration motion and dynamic characteristic intuitively can reflect the motion state of main shaft, but due to the interference of noise and high-frequency information, are difficult to directly obtain comparatively accurate turn error figure by sensor.So accurate acquisition turn error and turn error measuring technology are the study hotspots in precision processing technology field always.
Traditional turn error measuring method is as surveyed circular runout with amesdial, can not by the turn error of main shaft and roundness error separation out, deviation from circular from was eliminated afterwards by prod or standard ball, but require their a form error order of magnitude at least higher than the turn error of tested main shaft, for high-speed high-precision main shaft, main shaft form error and rotating accuracy, often at the same order of magnitude, can not be ignored, so need error separating technology to be separated with turn error by deviation from circular from.In addition for the interference often along with noise and high-frequency information in the test process of picture spindle rotation error this analog quantity, the purification therefore for useful signal is also most important.So be necessary that studying a kind of spindle rotation error detecting and analysing system effectively measures turn error.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of spindle rotation error detecting and analysing system, the deviation from circular from of main shaft is separated with turn error, for main shaft monitoring running state provides foundation.
In order to achieve the above object, the technical solution used in the present invention is:
A kind of spindle rotation error detecting and analysing system, comprise hardware components and software systems, hardware components comprises support or Magnetic gauge stand, laser displacement sensor, signal connecting line, Signals Transfer Board and data acquisition card, support or Magnetic gauge stand are fixed on main shaft, laser displacement sensor is connected with support or Magnetic gauge stand and gathers main shaft radial displacement jitter, the signal output part of laser displacement sensor passes through signal connecting line, Signals Transfer Board is connected with the input of data acquisition card, plural laser displacement sensor is pressed consolidation form and is exported by Signals Transfer Board, software systems are installed on computer, computer utilizes testing software to communicate with the output of data acquisition card, obtain the displacement signal of laser displacement sensor, then carry out filtering algorithm, separation algorithm analyzing and processing, deviation from circular from and turn error are separated and shows.
Described support clamping not with main axis, has four holes of installing for laser displacement sensor on main shaft above support.
The data acquisition of described hardware components is divided into two-point method collection and line-of-sight course collection by acquisition mode, and two-point method collection two differences, 90 degree of laser displacement sensors are measured; Line-of-sight course collection three laser displacement sensors are measured, and angle is obtained by optimized algorithm, select 45 degree and 96.5 degree, and the alignment error of angle should at positive and negative 0.5 degree.
Described software systems and testing software comprise Signal Pretreatment, time-domain analysis, amplitude spectrum analysis, frequency-domain analysis and time frequency analysis, the power frequency of signal and the real-time rotate speed of high-speed electric main shaft is obtained by frequency-domain analysis, carry out above-mentioned process by the signal collected main shaft, realize state recognition and diagnose accordingly.
Described filtering algorithm comprises LPF and Harmonic Wavelet Filter.
Described separation algorithm is separated collection signal with Analyses of Error Separation Techniques, isolates deviation from circular from and turn error.
The present invention can obtain deviation from circular from and the turn error of main shaft fast and accurately, tests simple, practical.
Accompanying drawing explanation
Fig. 1 is structure principle chart of the present invention.
Fig. 2 is operation principle flow chart of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
With reference to Fig. 1, a kind of spindle rotation error detecting and analysing system, comprise hardware components and software systems, hardware components comprises support or Magnetic gauge stand, laser displacement sensor, signal connecting line, Signals Transfer Board and data acquisition card, support or Magnetic gauge stand are fixed on main shaft, laser displacement sensor is connected with support or Magnetic gauge stand and gathers main shaft radial displacement jitter, the signal output part of laser displacement sensor passes through signal connecting line, Signals Transfer Board is connected with the input of data acquisition card, plural laser displacement sensor is pressed consolidation form and is exported by Signals Transfer Board, software systems are installed on computer, computer utilizes testing software to communicate with the output of data acquisition card, obtain the displacement signal of laser displacement sensor, then carry out filtering algorithm, separation algorithm analyzing and processing, deviation from circular from and turn error are separated and shows.
Described support clamping not with main axis, has four holes of installing for laser displacement sensor on main shaft above support.
The electric vortex sensor measuring that described laser displacement sensor is comparatively commonly used is more accurate, and the measured body be suitable for is more.
The data acquisition of described hardware components is divided into two-point method collection and line-of-sight course collection by acquisition mode, and two-point method collection two differences, 90 degree of laser displacement sensors are measured; Line-of-sight course collection three laser displacement sensors are measured, and angle is obtained by optimized algorithm, optional 45 degree and 96.5 degree, and the alignment error of angle should at positive and negative about 0.5 degree.
Described software systems and testing software comprise Signal Pretreatment, time-domain analysis, amplitude spectrum analysis, frequency-domain analysis and time frequency analysis, the power frequency of signal and the real-time rotate speed of high-speed electric main shaft is obtained by frequency-domain analysis, carry out above-mentioned process by the signal collected main shaft, realize state recognition and diagnose accordingly.
Described filtering algorithm comprises LPF and Harmonic Wavelet Filter, and low pass filtered wave energy effectively removes high-frequency noise interference.Harmonic wavelet grows up on the basis of wavelet theory, overcome wavelet transformation dot interlace sampling two enter mode may lossing signal details composition, at frequency domain, there is the deficiencies such as obvious Phase-Shifting Characteristics, have wait any frequency band noenergy leakage of sampling number, frequency domain tightly props up, the good characteristic of " box-like " frequency spectrum.In actual motion, main shaft can be subject to the impact of various disturbing factor, the turn error adopting error separating technology to obtain usually shows as complicated shape, normally whether erroneous judgement may be caused to spindle operation, by harmonic wavelet good characteristic, signal is reconstructed, the purification turn error of band of interest can be extracted, then labor is carried out to it.
Described separation algorithm is separated collection signal with Analyses of Error Separation Techniques, isolates deviation from circular from and turn error.
Operation principle of the present invention is:
With reference to Fig. 2, first experiment parameter is set, namely sets sample mode, sampling channel, spindle rotating direction, the speed of mainshaft, sample frequency and sampling time; Main shaft radial position signal is gathered, synchronous acquisition, simultaneous display by the laser displacement sensor of hardware components; By software systems, time domain, frequency-domain analysis are carried out to signal again, can state recognition be realized and diagnose accordingly; Then go average, LPF and Harmonic Wavelet Filter to signal, sample mode is that two-point method then directly shows turn error figure, and sample mode shows circularity and turn error respectively after line-of-sight course then processes by line-of-sight course isolation technics; Last foundation analysis result carries out Performance Evaluation and fault diagnosis.
More than show and describe general principle of the present invention, principal character and advantage.The technical staff of the industry should understand; the present invention is by the impact of above-mentioned example, and the knowledge described in above-mentioned example and description illustrates principle of the present invention, without departing from the inventive concept of the premise; simply deduce and convert, all should be considered as protection scope of the present invention.
Claims (6)
1. a spindle rotation error detecting and analysing system, comprise hardware components and software systems, it is characterized in that: hardware components comprises support or Magnetic gauge stand, laser displacement sensor, signal connecting line, Signals Transfer Board and data acquisition card, support or Magnetic gauge stand are fixed on main shaft, laser displacement sensor is connected with support or Magnetic gauge stand and gathers main shaft radial displacement and beat, the signal output part of laser displacement sensor passes through signal connecting line, Signals Transfer Board is connected with the input of data acquisition card, Signals Transfer Board effect is exported by consolidation form by plural laser displacement sensor, software systems are installed on computer, computer utilizes testing software to communicate with the output of data acquisition card, obtain the displacement signal of laser displacement sensor, then carry out filtering algorithm, separation algorithm analyzing and processing, deviation from circular from and turn error are separated and shows.
2. a kind of spindle rotation error detecting and analysing system according to claim 1, is characterized in that: described support clamping not with main axis, has four holes of installing for laser displacement sensor on main shaft above support.
3. a kind of spindle rotation error detecting and analysing system according to claim 1, it is characterized in that: the data acquisition of described hardware components is divided into two-point method collection and line-of-sight course collection by acquisition mode, two-point method collection two differences, 90 degree of laser displacement sensors are measured; Line-of-sight course collection three laser displacement sensors are measured, and angle is obtained by optimized algorithm, select 45 degree and 96.5 degree, and the alignment error of angle should at positive and negative 0.5 degree.
4. a kind of spindle rotation error detecting and analysing system according to claim 1, it is characterized in that: described software systems and testing software comprise Signal Pretreatment, time-domain analysis, amplitude spectrum analysis, frequency-domain analysis and time frequency analysis, obtain the power frequency of signal and the real-time rotate speed of high-speed electric main shaft by frequency-domain analysis, carry out above-mentioned process by the signal collected main shaft, realize state recognition and diagnose accordingly.
5. a kind of spindle rotation error detecting and analysing system according to claim 1, is characterized in that: described filtering algorithm comprises LPF and Harmonic Wavelet Filter.
6. a kind of spindle rotation error detecting and analysing system according to claim 1, is characterized in that: described separation algorithm is separated collection signal with Analyses of Error Separation Techniques, isolates deviation from circular from and turn error.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410340992.2A CN104227501A (en) | 2014-07-17 | 2014-07-17 | Testing and analyzing system for rotating errors of main shaft |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410340992.2A CN104227501A (en) | 2014-07-17 | 2014-07-17 | Testing and analyzing system for rotating errors of main shaft |
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| CN201410340992.2A Pending CN104227501A (en) | 2014-07-17 | 2014-07-17 | Testing and analyzing system for rotating errors of main shaft |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104942655A (en) * | 2015-07-20 | 2015-09-30 | 徐文欢 | Main shaft rotary error accuracy testing device |
| CN105033759A (en) * | 2015-06-09 | 2015-11-11 | 上海理工大学 | Mixing multi-method testing device for main shaft rotation precision measuring test |
| CN105538039A (en) * | 2016-02-05 | 2016-05-04 | 河南正航主轴科技有限公司 | Intelligent electric spindle control implementation method |
| CN105938044A (en) * | 2016-04-14 | 2016-09-14 | 西安交通大学 | High-precision liquid hydrostatic spindle axis track test system for grinding machine and high-precision liquid hydrostatic spindle axis track test method thereof |
| CN107727023A (en) * | 2017-09-14 | 2018-02-23 | 西安交通大学 | Hybridization four-point method turn error based on line-of-sight course, deviation from circular from computational methods |
| CN110064969A (en) * | 2019-03-21 | 2019-07-30 | 湖北江山华科数字设备科技有限公司 | A kind of multi-axis NC Machine Tools volumetric errors laser measurement and compensation system |
| CN112846938A (en) * | 2021-01-05 | 2021-05-28 | 北京信息科技大学 | Main shaft rotation precision degradation traceability system under cutting working condition |
| CN114035505A (en) * | 2021-11-05 | 2022-02-11 | 珠海格力电器股份有限公司 | Control system and control method for machine tool machining |
| CN117288140A (en) * | 2023-11-21 | 2023-12-26 | 西安交通大学 | Method and system for measuring roundness error of rotary shaft and radial rotary error measuring method |
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| JP2005061834A (en) * | 2003-08-08 | 2005-03-10 | Toyoda Mach Works Ltd | Error calculation method for working machine having rotary shaft |
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| CN102426001A (en) * | 2011-10-18 | 2012-04-25 | 北京理工大学 | Axial circular runout and total runout single displacement error separation device and method |
| CN102501137A (en) * | 2011-11-03 | 2012-06-20 | 西安交通大学 | Online monitoring device for radial rotation accuracy of main shaft |
| CN103213033A (en) * | 2013-04-25 | 2013-07-24 | 杭州汽轮机股份有限公司 | In-place measuring device and measuring method for separated electricity jumpiness of main shaft rotation error |
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- 2014-07-17 CN CN201410340992.2A patent/CN104227501A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2005061834A (en) * | 2003-08-08 | 2005-03-10 | Toyoda Mach Works Ltd | Error calculation method for working machine having rotary shaft |
| CN1927535A (en) * | 2006-07-21 | 2007-03-14 | 上海大学 | Tracking method of on-line measuring roundness error and machine tool main axle error |
| CN102426001A (en) * | 2011-10-18 | 2012-04-25 | 北京理工大学 | Axial circular runout and total runout single displacement error separation device and method |
| CN102501137A (en) * | 2011-11-03 | 2012-06-20 | 西安交通大学 | Online monitoring device for radial rotation accuracy of main shaft |
| CN103213033A (en) * | 2013-04-25 | 2013-07-24 | 杭州汽轮机股份有限公司 | In-place measuring device and measuring method for separated electricity jumpiness of main shaft rotation error |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105033759A (en) * | 2015-06-09 | 2015-11-11 | 上海理工大学 | Mixing multi-method testing device for main shaft rotation precision measuring test |
| WO2017012107A1 (en) * | 2015-07-20 | 2017-01-26 | 徐文欢 | Turning error precision testing device for spindle |
| CN104942655A (en) * | 2015-07-20 | 2015-09-30 | 徐文欢 | Main shaft rotary error accuracy testing device |
| CN105538039A (en) * | 2016-02-05 | 2016-05-04 | 河南正航主轴科技有限公司 | Intelligent electric spindle control implementation method |
| CN105538039B (en) * | 2016-02-05 | 2018-01-30 | 河南正航主轴科技有限公司 | Intelligent electro spindle controls implementation |
| CN105938044B (en) * | 2016-04-14 | 2019-02-05 | 西安交通大学 | The high-precision liquid static pressure electric main shaft orbit of shaft center test macro and method of grinding machine |
| CN105938044A (en) * | 2016-04-14 | 2016-09-14 | 西安交通大学 | High-precision liquid hydrostatic spindle axis track test system for grinding machine and high-precision liquid hydrostatic spindle axis track test method thereof |
| CN107727023A (en) * | 2017-09-14 | 2018-02-23 | 西安交通大学 | Hybridization four-point method turn error based on line-of-sight course, deviation from circular from computational methods |
| CN110064969A (en) * | 2019-03-21 | 2019-07-30 | 湖北江山华科数字设备科技有限公司 | A kind of multi-axis NC Machine Tools volumetric errors laser measurement and compensation system |
| CN112846938A (en) * | 2021-01-05 | 2021-05-28 | 北京信息科技大学 | Main shaft rotation precision degradation traceability system under cutting working condition |
| 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 |
| CN114035505A (en) * | 2021-11-05 | 2022-02-11 | 珠海格力电器股份有限公司 | Control system and control method for machine tool machining |
| CN117288140A (en) * | 2023-11-21 | 2023-12-26 | 西安交通大学 | Method and system for measuring roundness error of rotary shaft and radial rotary error measuring method |
| CN117288140B (en) * | 2023-11-21 | 2024-02-20 | 西安交通大学 | Method and system for measuring roundness error of rotary shaft and radial rotary error measuring method |
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Application publication date: 20141224 |