CN102359759B - Measuring system for electrical runout amount of revolving body - Google Patents
Measuring system for electrical runout amount of revolving body Download PDFInfo
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- CN102359759B CN102359759B CN 201110249683 CN201110249683A CN102359759B CN 102359759 B CN102359759 B CN 102359759B CN 201110249683 CN201110249683 CN 201110249683 CN 201110249683 A CN201110249683 A CN 201110249683A CN 102359759 B CN102359759 B CN 102359759B
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Abstract
回转体电跳动量测量系统，包括测量支架，测量支架上安装有对准被测回转体、以测量被测回转体表面相对移动距离的激光位移传感器，和对准被测回转体、以测量被测回转体表面的综合跳动量的电涡流传感器，以及对准被测回转体、获取被测回转体的旋转角度的霍尔传感器；被测回转体上设有能被霍尔传感器识别的标记；激光位移传感器和电涡流传感器以及霍尔传感器均与处理器连接，处理器用综合跳动量减去相对移动距离获得电跳动量；激光位移传感器与电涡流传感器位于同一个圆周上，圆周与被测回转体同轴；霍尔传感器与激光位移传感器形成的直线与被测回转体的轴线平行。本发明具有能够实现在线实时测量、测量精度高等优点。
The electrical runout measurement system of the rotating body includes a measuring bracket, on which a laser displacement sensor aligned with the measured rotating body to measure the relative movement distance of the surface of the tested rotating body is installed, and a laser displacement sensor aligned with the measured rotating body to measure the measured rotating body An eddy current sensor for measuring the comprehensive runout of the surface of the rotating body, and a Hall sensor for aligning the measured rotating body and obtaining the rotation angle of the measured rotating body; the measured rotating body is provided with a mark that can be recognized by the Hall sensor; The laser displacement sensor, the eddy current sensor and the Hall sensor are all connected to the processor, and the processor subtracts the relative movement distance from the comprehensive runout to obtain the electric runout; the laser displacement sensor and the eddy current sensor are located on the same circle, and the circle and the measured rotation The body is coaxial; the straight line formed by the Hall sensor and the laser displacement sensor is parallel to the axis of the measured rotating body. The invention has the advantages of being able to realize on-line real-time measurement, high measurement precision and the like.
Description
Technical field
The present invention relates to a kind of solid of revolution electricity jerk value measuring system.
Background technology
For a long time, Chinese scholars to the revolving parts correlation parameter measurement carried out large quantity research, occur but the large diameter measurement aspect never has desirable method and instrument, especially in machinery industry, large-sized precision is measured and is not yet obtained fine solution.Target of the present invention is that research and development are by the online accurate correlation parameters such as electric jerk value that detect the large scale revolving parts of building of sensor.
Electricity jerk value (electrical runout) is an important evaluation index of precision rotating body part (such as the tested solid of revolution axle journal of steam turbine large rotor) crudy, and API Std API 612 is described in detail this.At present, the measurement of mechanical run amount is mainly adopted dial gauge that tested part is played table and is detected, and manually-operated efficient is low, and precision is not high.The detection of electricity jerk value mainly adopts eddy current probe to replace dial gauge to carry out, and detects owing to need to cooperate with the mechanical run amount synchronously, is difficult to reach the high-precision requirement of precision measurement.And detect online the jitter parameter such as electric jerk value, mechanical run amount and there is no very ripe effective method and instrument.
Summary of the invention
For overcoming the shortcomings such as the efficient that the prior art manual measurement beats is low, precision is not high, the invention provides a kind of can the realization and measure in real time the solid of revolution electricity jerk value measuring system that measuring accuracy is high online.
Solid of revolution electricity jerk value measuring system, comprise the measurement support, be equipped with on the described measurement support and aim at tested solid of revolution, with the laser displacement sensor of the relative movement distance of measuring tested revolving body surface, with aim at tested solid of revolution, with the current vortex sensor of the comprehensive jerk value of measuring tested revolving body surface, and aim at tested solid of revolution, obtain the Hall element of the anglec of rotation of tested solid of revolution; Described tested solid of revolution is provided with the mark that can be identified by described Hall element; Described laser displacement sensor is connected Hall element and all is connected with processor with current vortex sensor, described processor deducts relative movement distance with comprehensive jerk value and obtains electric jerk value;
Described laser displacement sensor and current vortex sensor are positioned on the same circumference, and described circumference is coaxial with tested solid of revolution; Described Hall element is parallel with the axis of tested solid of revolution with the straight line that described laser sensor forms.
Further, the next door of described laser displacement sensor, current vortex sensor and Hall element all is connected with the protective device that stops sensor to contact tested revolving body surface.
Further, described protective device is the circular piece of projection, and described protective device is connected with sensor outer housing by screw thread.
Further, described measurement support is provided with the left and right adjusting device along horizontal left and right adjusting measuring system, described left and right adjusting device comprise the left and right adjusting nut affixed with described measurement support, with the left and right adjusting leading screw of described left and right adjusting nut engaged transmission and the left and right adjusting knob affixed with described left and right adjusting leading screw;
Described measurement support comprises that connecting described laser displacement sensor is connected circular arc linking arm and the straight line linking arm that is connected described laser displacement sensor and current vortex sensor with current vortex sensor.
Further, described laser displacement sensor, Hall element and current vortex sensor be respectively equipped with make corresponding sensor near or away from the up and down micromatic setting of described tested solid of revolution, described up and down micromatic setting comprises and the affixed up and down fine-tuning nut of described measurement support and the up and down fine setting leading screw affixed with described up and down fine-tuning nut, and the described leading screw of finely tuning up and down is provided with up and down vernier adjustment knob.
Measuring process of the present invention is: before the measurement, and tested solid of revolution stall.Traverse measuring device is regulated first the left and right adjusting device near measured workpiece, makes the present invention in the horizontal direction near tested revolving body surface, opens simultaneously the monitoring that laser displacement sensor carries out distance.In the time of near laser displacement sensor moves to tested solid of revolution peak, regulate the up and down vernier adjustment knob of laser displacement sensor, make the downward minute movement of laser displacement sensor, but until enter in the measuring distance of laser displacement sensor.At this moment can rely on the reading value of laser displacement sensor to show to regulate the left and right adjusting device; make the laser displacement sensor reading minimum; namely the laser displacement sensor measuring point is adjusted to over against tested solid of revolution circular section peak; the up and down vernier adjustment knob of finely tuning again laser displacement sensor makes round keeper contact tested revolving body surface to reach standard range finding position; the protective device of laser displacement sensor revolved to turn around it is not contacted with workpiece, lock at last adjusting knob.The position of current vortex sensor connects assurance by device.At this moment, measurement mechanism is regulated complete, can measure.
During measurement, tested solid of revolution rotation, rotating speed immobilizes.Set the parameters such as sample frequency, sampling number in Survey Software, start sensor begins to measure and data acquisition.
The laser displacement sensor collection be digital signal, thereby can directly be sent to computing machine.The current vortex sensor collection be simulating signal, carry out A/D conversion through capture card, become at last digital signal to import computing machine into, the data analysis that transmission is come in is processed.The detailed process that data analysis is processed is: with laser displacement sensor adopt data and corresponding angular phase value integration draw the polar plot of mechanical run amount, equally correspondence draw current vortex sensor adopt the polar plot of comprehensive jerk value.Draw mechanical run amount and comprehensive jerk value by the numerical value change range computation, the comprehensive jerk value that draws is deducted the mechanical run amount just draw electric jerk value.These jerk values are the profile variation characteristics that show on the tested solid of revolution measured circle cross section, and measurement mechanism of the present invention has guaranteed this point by laser displacement sensor and current vortex sensor are arranged in the same cross section.
Technical conceive of the present invention is: the laser displacement sensor of employing and current vortex sensor, wherein laser displacement sensor is measured the relative movement distance (mechanical run amount) of measured surface, current vortex sensor is surveyed measured surface and is obtained comprehensive jerk value (Total Indicated Runout, TIR comprises mechanical run amount and electric jerk value).Thereby can from comprehensive jerk value, remove the size that mechanical jerk value obtains electric jerk value through converting.Adopt the Hall element sensing to stick at mark magnet steel or detection end face telltale mark such as the fabrication hole etc. of tested revolving body surface, obtain angle corresponding to tested solid of revolution rotation.Along with the rotation of tested solid of revolution, sensor records the jerk value of the some points on the circumference with certain sampling frequency, separates obtaining mechanical run amount and electric jerk value finally by process analysis, and tested solid of revolution is beated carry out comprehensive evaluation.
When the present invention measures laser displacement sensor, current vortex sensor and Hall element about and radial direction can adjust, can guarantee like this that sensor is each measures all in the normal direction of circular section and keeps certain measuring distance, have simultaneously very high flexibility, be fit to the measurement of the diameter of various sizes.The sensor next door arranges protective device during measurement, in order to avoid damage sensor.Laser displacement sensor, current vortex sensor and Hall element are fixed together by adjusting knob respectively, laser displacement sensor and current vortex sensor be the fixed angle layout circumferentially, and laser displacement sensor is closely arranged on the position parallel with tested solid of revolution center line with Hall element.Being positioned at simultaneously correct measuring position by three kinds of sensors of mobile knob adjusting measures.
Sensor fine setting is up and down undertaken by vernier adjustment knob, and turning knob drives screw pair makes the generation of sensor outer casing mobile.About adjustment drive the slide block that links together with sensor frame by a small-sized leading screw and move.
The slight distance of laser displacement sensor and current vortex sensor gauge head and measured surface relies on up and down micromatic setting assurance in measuring process.Regulate the circular piece minimum point by vernier adjustment knob and contact with measured surface, guarantee certain measuring distance thereby then itself and measured surface are no longer contacted circular piece Rotate 180 degree.
Mark in the measuring position before measuring little magnet steel or end surface measurement and with the end face fabrication hole as mark, the position of Hall element is fixed, tested solid of revolution rotation during measurement, when little magnet steel turns over Hall element, cause the variation in magnetic field, sensor is just exported a pulse, and the data phase of surveying was spaced apart 360 and spent this moment, the jerk value when can be calculated each angle.
The present invention has following beneficial effect:
1. online in real time measurement.The present invention can be installed on the lathe saddle and detect online.Laser displacement sensor and the current vortex sensor adjusting knob by separately is adjusted to tested solid of revolution rotation behind the correct measurement position, begins to measure.The high sample frequency of laser displacement sensor and current vortex sensor has guaranteed the online detection of jerk value.
2. measuring accuracy is high.The laser displacement sensor that the present invention adopts can reach ± 0.05%F.S. in the situation lower linear error of measurement range ± 0.5mm, thereby the linear error of the mechanical run amount of this sensor measurement is ± 0.5 μ.The linear error of the comprehensive jerk value that current vortex sensor records is ± 1 μ.The electric jerk value linear error that analytical calculation draws is ± 1.1 μ, has very high precision.
3. flexible high.The measuring method that the present invention adopts goes for the detection of the tested rotary part of various sizes, has very high flexibility.
Description of drawings
Fig. 1 is the schematic diagram of the present invention when measuring tested solid of revolution.
Fig. 2 is the schematic diagram that laser displacement sensor and Hall element are measured tested solid of revolution.
Embodiment
With reference to accompanying drawing, further specify the present invention:
Solid of revolution electricity jerk value measuring system, comprise and measure support 1, be equipped with on the described measurement support 1 and aim at tested solid of revolution 2, with the laser displacement sensor 3 of the relative movement distance of measuring tested solid of revolution 2 surfaces, with aim at tested solid of revolution 2, with the current vortex sensor 4 of the comprehensive jerk value of measuring tested revolving body surface, and aim at tested solid of revolution 2, obtain the Hall element 5 of the anglec of rotation of tested solid of revolution 2; Described tested solid of revolution 2 is provided with can be by the mark 21 of described Hall element 5 identifications; Described laser displacement sensor 3 is connected with current vortex sensor and Hall element 5 all is connected with processor, and described processor deducts relative movement distance with comprehensive jerk value and obtains electric jerk value;
Described laser displacement sensor 3 is positioned on the same circumference with current vortex sensor 4, and described circumference is coaxial with tested solid of revolution 2; Described Hall element 5 is parallel with the axis of tested solid of revolution 2 with the straight line that described laser displacement sensor 3 forms.
The next door of described laser displacement sensor 3, current vortex sensor 4 and Hall element 5 all is connected with the protective device 6 that stops sensor 3,4,5 to contact tested revolving body surface.
Described protective device 6 is the circular piece of projection, and described protective device 6 is connected with sensor outer housing by screw thread.
Described measurement support 1 is provided with the left and right adjusting device along horizontal left and right adjusting measuring system, described left and right adjusting device 7 comprise the left and right adjusting nut affixed with described measurement support, with the left and right adjusting leading screw of described left and right adjusting nut engaged transmission and the left and right adjusting knob affixed with described left and right adjusting leading screw;
Described measurement support 1 comprises the described laser displacement sensor 3 of connection the circular arc linking arm of being connected with current vortex sensor and the straight line linking arm that is connected described laser displacement sensor 3 and Hall element 5.
Described laser displacement sensor 3, Hall element 5 and current vortex sensor 4 be respectively equipped with make corresponding sensor near or away from up and down micromatic setting a, b, the c of described tested solid of revolution, described up and down micromatic setting a, b, c comprises and the affixed up and down fine-tuning nut of described measurement support 1 and the up and down fine setting leading screw affixed with described up and down fine-tuning nut, and the described leading screw of finely tuning up and down is provided with up and down vernier adjustment knob.
Measuring process of the present invention is: before the measurement, and tested solid of revolution stall.Traverse measuring device is regulated first the left and right adjusting device near measured workpiece, makes the present invention in the horizontal direction near tested revolving body surface, opens simultaneously the monitoring that laser displacement sensor carries out distance.In the time of near laser displacement sensor moves to tested solid of revolution peak, regulate the up and down vernier adjustment knob of laser displacement sensor, make the downward minute movement of laser displacement sensor, but until enter in the measuring distance of laser displacement sensor.At this moment can rely on the reading value of laser displacement sensor to show to regulate the left and right adjusting device; make the laser displacement sensor reading minimum; namely the laser displacement sensor measuring point is adjusted to over against tested solid of revolution circular section peak; the up and down vernier adjustment knob of finely tuning again laser displacement sensor makes round keeper contact tested revolving body surface to reach standard range finding position; the protective device of laser displacement sensor revolved to turn around it is not contacted with workpiece, lock at last adjusting knob.The position of current vortex sensor connects assurance by device.At this moment, measurement mechanism is regulated complete, can measure.
During measurement, tested solid of revolution rotation, rotating speed immobilizes.Set the parameters such as sample frequency, sampling number in Survey Software, start sensor begins to measure and data acquisition.
The laser displacement sensor collection be digital signal, thereby can directly be sent to computing machine.The current vortex sensor collection be simulating signal, carry out A/D conversion through capture card, become at last digital signal to import computing machine into, the data analysis that transmission is come in is processed.The detailed process that data analysis is processed is: with laser displacement sensor adopt data and corresponding angular phase value integration draw the polar plot of mechanical run amount, equally correspondence draw current vortex sensor adopt the polar plot of comprehensive jerk value.Draw mechanical run amount and comprehensive jerk value by the numerical value change range computation, the comprehensive jerk value that draws is deducted the mechanical run amount just draw electric jerk value.These jerk values are the profile variation characteristics that show on the tested solid of revolution measured circle cross section, and measurement mechanism of the present invention has guaranteed this point by laser displacement sensor and current vortex sensor are arranged in the same cross section.
Technical conceive of the present invention is: the laser displacement sensor of employing and current vortex sensor, wherein laser displacement sensor is measured the relative movement distance (mechanical run amount) of measured surface, current vortex sensor is surveyed measured surface and is obtained comprehensive jerk value (Total Indicated Runout, TIR comprises mechanical run amount and electric jerk value).Thereby can from comprehensive jerk value, remove the size that mechanical jerk value obtains electric jerk value through converting.Adopt the Hall element sensing to stick at mark magnet steel or detection end face telltale mark such as the fabrication hole etc. of tested revolving body surface, obtain angle corresponding to tested solid of revolution rotation.Along with the rotation of tested solid of revolution, sensor records the jerk value of the some points on the circumference with certain sampling frequency, separates obtaining mechanical run amount and electric jerk value finally by process analysis, and tested solid of revolution is beated carry out comprehensive evaluation.
When the present invention measures laser displacement sensor, current vortex sensor and Hall element about and radial direction can adjust, can guarantee like this that sensor is each measures all in the normal direction of circular section and keeps certain measuring distance, have simultaneously very high flexibility, be fit to the measurement of the diameter of various sizes.The sensor next door arranges protective device during measurement, in order to avoid damage sensor.Laser displacement sensor, current vortex sensor and Hall element are fixed together by adjusting knob respectively, laser displacement sensor and current vortex sensor be the fixed angle layout circumferentially, and laser displacement sensor is closely arranged on the position parallel with tested solid of revolution center line with Hall element.Being positioned at simultaneously correct measuring position by three kinds of sensors of mobile knob adjusting measures.
Sensor fine setting is up and down undertaken by vernier adjustment knob, and turning knob drives screw pair makes the generation of sensor outer casing mobile.About adjustment drive the slide block that links together with sensor frame by a small-sized leading screw and move.
The slight distance of laser displacement sensor and current vortex sensor gauge head and measured surface relies on up and down micromatic setting assurance in measuring process.Regulate the circular piece minimum point by vernier adjustment knob and contact with measured surface, guarantee certain measuring distance thereby then itself and measured surface are no longer contacted circular piece Rotate 180 degree.
Mark in the measuring position before measuring little magnet steel or end surface measurement and with the end face fabrication hole as mark, the position of Hall element is fixed, tested solid of revolution rotation during measurement, when little magnet steel turns over Hall element, cause the variation in magnetic field, sensor is just exported a pulse, and the data phase of surveying was spaced apart 360 and spent this moment, the jerk value when can be calculated each angle.
The present invention has following beneficial effect:
1. online in real time measurement.The present invention can be installed on the lathe saddle and detect online.Laser displacement sensor and the current vortex sensor adjusting knob by separately is adjusted to behind the correct measurement position by tested solid of revolution rotation, begins to measure.The high sample frequency of laser displacement sensor and current vortex sensor has guaranteed the online detection of jerk value.
2. measuring accuracy is high.The laser displacement sensor that the present invention adopts can reach ± 0.05%F.S. in the situation lower linear error of measurement range ± 0.5mm, thereby the linear error of the mechanical run amount of this sensor measurement is ± 0.5 μ.The linear error of the comprehensive jerk value that current vortex sensor records is ± 1 μ.The electric jerk value linear error that analytical calculation draws is ± 1.1 μ, has very high precision.
3. flexible high.The measuring method that the present invention adopts goes for the detection of the tested rotary part of various sizes, has very high flexibility.
The described content of this instructions embodiment only is enumerating the way of realization of inventive concept; protection scope of the present invention should not be regarded as only limiting to the concrete form that embodiment states, protection scope of the present invention also reaches in those skilled in the art conceives the equivalent technologies means that can expect according to the present invention.
Claims (5)
1. solid of revolution electricity jerk value measuring system, it is characterized in that: comprise the measurement support, be equipped with on the described measurement support and aim at tested solid of revolution, with the laser displacement sensor of the relative movement distance of measuring tested revolving body surface, with aim at tested solid of revolution, with the current vortex sensor of the comprehensive jerk value of measuring tested revolving body surface, and aim at tested solid of revolution, obtain the Hall element of the anglec of rotation of tested solid of revolution; Described tested solid of revolution is provided with the mark that can be identified by described Hall element; Described laser displacement sensor is connected Hall element and all is connected with processor with current vortex sensor, described processor deducts relative movement distance with comprehensive jerk value and obtains electric jerk value;
Described laser displacement sensor and current vortex sensor are positioned on the same circumference, and described circumference is coaxial with tested solid of revolution; Described Hall element is parallel with the axis of tested solid of revolution with the straight line that described laser displacement sensor forms.
2. solid of revolution as claimed in claim 1 electricity jerk value measuring system, it is characterized in that: the next door of described laser displacement sensor, current vortex sensor and Hall element all is connected with the protective device that stops sensor to contact tested revolving body surface.
3. solid of revolution as claimed in claim 2 electricity jerk value measuring system, it is characterized in that: described protective device is the circular piece of projection, and described protective device is connected with sensor outer housing by screw thread.
4. such as the described solid of revolution electricity of one of claim 1-3 jerk value measuring system, it is characterized in that: described measurement support is provided with the left and right adjusting device along horizontal left and right adjusting measuring system, described left and right adjusting device comprise the left and right adjusting nut affixed with described measurement support, with the left and right adjusting leading screw of described left and right adjusting nut engaged transmission and the left and right adjusting knob affixed with described left and right adjusting leading screw;
Described measurement support comprises that connecting described laser displacement sensor is connected circular arc linking arm and the straight line linking arm that is connected described laser displacement sensor and Hall element with current vortex sensor.
5. solid of revolution as claimed in claim 4 electricity jerk value measuring system, it is characterized in that: described laser displacement sensor, Hall element and current vortex sensor be respectively equipped with make corresponding sensor near or away from the up and down micromatic setting of described tested solid of revolution, described up and down micromatic setting comprises and the affixed up and down fine-tuning nut of described measurement support and the up and down fine setting leading screw affixed with described up and down fine-tuning nut, and the described leading screw of finely tuning up and down is provided with up and down vernier adjustment knob.
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| CN 201110249683 CN102359759B (en) | 2011-08-27 | 2011-08-27 | Measuring system for electrical runout amount of revolving body |
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| CN 201110249683 CN102359759B (en) | 2011-08-27 | 2011-08-27 | Measuring system for electrical runout amount of revolving body |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103213033B (en) * | 2013-04-25 | 2016-08-10 | 杭州汽轮机股份有限公司 | The electricity separating spindle rotation error is beated on-position measure device and measuring method |
| CN104197874B (en) * | 2014-07-04 | 2017-06-27 | 丽水学院 | A high-precision method for in-situ measurement of the runout of a rotating body |
| CN104931001B (en) * | 2015-06-05 | 2017-11-24 | 安徽昊方机电股份有限公司 | High-precision sensor protection device |
| CN105180860B (en) * | 2015-08-31 | 2017-10-24 | 哈尔滨汽轮机厂有限责任公司 | A kind of online compensation formula rotor pulsation measurement system and method |
| 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 |
| CN108132022A (en) * | 2017-12-05 | 2018-06-08 | 航天材料及工艺研究所 | A kind of deformation measuring device of large diameter thin wall babinet |
| CN110207629A (en) * | 2019-07-08 | 2019-09-06 | 健研检测集团有限公司 | A kind of body structure surface concrete scaling degree measurement device and measurement method |
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| CN202216664U (en) * | 2011-08-27 | 2012-05-09 | 浙江大学 | Measuring system for electrical runout of rotating body |
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| US6741074B2 (en) * | 2002-03-01 | 2004-05-25 | General Electric Company | Method and apparatus for separating electrical runout from mechanical runout |
| US7902487B2 (en) * | 2005-05-18 | 2011-03-08 | Siemens Industry, Inc. | Systems for reducing slow roll |
| JP2010164357A (en) * | 2009-01-14 | 2010-07-29 | Mitsubishi Electric Corp | Device for measuring amount of eccentricity in rotor |
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| CN202216664U (en) * | 2011-08-27 | 2012-05-09 | 浙江大学 | Measuring system for electrical runout of rotating body |
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| Title |
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| Cheol-Soon Kim,et al.In Situ Runout Identification in Active Magnetic Bearing System by Extended Influence Coefficient Method.《IEEE/ASME TRANSACTIONS ON MECHATRONICS》.1997,第2卷(第1期),51-57. |
| In Situ Runout Identification in Active Magnetic Bearing System by Extended Influence Coefficient Method;Cheol-Soon Kim,et al;《IEEE/ASME TRANSACTIONS ON MECHATRONICS》;19970331;第2卷(第1期);51-57 * |
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