CN102519404B - Measurement and correction method of flatness of large-diameter flange plane - Google Patents
Measurement and correction method of flatness of large-diameter flange plane Download PDFInfo
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- CN102519404B CN102519404B CN201110401931.9A CN201110401931A CN102519404B CN 102519404 B CN102519404 B CN 102519404B CN 201110401931 A CN201110401931 A CN 201110401931A CN 102519404 B CN102519404 B CN 102519404B
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Abstract
The invention relates to a measurement and correction method of flatness of a large-diameter flange plane. The diameter of the flange plane is greater than 3 meters. And the method comprises the following steps that: the to-be-measured flange plane is cleaned to remove corrosion and paint; a laser planometer is utilized to measure flatness of the flange plane; data of the measured flange plane are obtained and are analyzed as well as a specific area that needs to be ground is indicated; a bowl plane grinder is utilized to carry out plane grinding; the laser planometer is utilized to carry out measurement and the measurement result is analyzed again so as to determine whether a precision requirement of the large-diameter flange plane is met; and grinding and measurement are carried out repeatedly until the ground large-diameter flange plane meets the designed precision requirement. According to the invention, the method can be used for measurement and correction on flatness of a large-diameter flange plane in fields like ocean engineering, ship construction, wind power generation and mechanical manufacturing and the like; it is beneficial to improve service life of the large-diameter flange plane, improve measurement precision of the flatness of the flange plane, shorten a construction period and reduce construction cost.
Description
Technical field
The present invention relates to machine-building, the measurement of Big Diameter Flange surface evenness and bearing calibration while particularly relating to a kind of machine-building, it can be used for the process operation of the equipment upper flanges such as marine hoist, shovel loader, ocean platform, wind-power electricity generation, shore tackle, various truck crane, warship canon, land big gun and tank.
Background technology
The equipment with swing bearing such as crane, windmill, due to the restriction of machine work condition, base is divided into upper and lower two parts conventionally, after processing, the flange of upper bed-plate is connected with lower bottom base welding or bolt, and then erecting equipment.The diameter of these flanges has more than 3 meters, belongs to Big Diameter Flange.Due to construction or the medium distortion that causes Flange Plane of transportation, and for the function of swing bearing and serviceable life the important point be exactly the flatness of flange, so before erecting equipment, measure the flatness of flange, and process overproof.Adopt companion flange clearance gauge to measure for the measurement of Flange Plane more.But there are the following problems for this measuring method: the surface of contact between companion flange and body flange also exists error; Gap between flange face is along with different installation sites has different gaps; The requirement of strength of companion flange is higher, can produce distortion, the precision that impact is measured in the time of lifting; For large diameter flange (diameter is greater than 3m), the cost compare of making companion flange is high.
In prior art, as follows for the problem of the measurement of current flange formation degree and the method for processing and existence:
The first is for the Flange Plane processing mode that does not meet installation requirement, and current method has several as follows: grind according to companion flange, use blue oil, grind according to impression.The problem that this kind of method exists is: between companion flange and body flange, also have error, just have error with the control of the precision of companion flange grinding own, this error is in the time installing body, if contraposition is inaccurate, gap can be larger; It is also very large that the selecting of abrasive tool obtains Accuracy to flatness, the sander that most adopts can only be point type polishing or the polishing of line formula, even skilled polishing work is also difficult to accomplish the whole plane polishing amount being consistent of polishing, and for the low spot of polishing, after polishing, be also difficult to eliminate.
The method that the second is processed Flange Plane is machine work, and its main tool is boring machine and milling machine, and the problem of this kind of method existence is: the diameter of flange has limited machine work, and for little flange and large flange, this kind of method is all inapplicable; Mach method has also been limited in the position of base, such as the position of base is too high, or there is no crane cooperation etc.; The fixing difficulty of lathe is large, the one, the impact in space, the 2nd, base to welding etc. restriction; The requirement of flange thickness has also limited mach method; Machine-tooled method has also been limited in flange bolt hole, and the use of boring machine is restricted; Requirement on machining accuracy to lathe is high, and the requirement of strength of the same fixture to lathe is also high.Other mechanical polishing tool, base that equally also will be fixing.
Summary of the invention
The object of the invention is, in order to overcome above-mentioned the deficiencies in the prior art, provides a kind of measurement and bearing calibration of new Big Diameter Flange surface evenness.Method of the present invention will complete measurement and the correction work of Big Diameter Flange surface evenness simply and easily, the serviceable life that can improve swing bearing, and improve measuring accuracy, the shortening production cycle of Flange Plane flatness and reduce construction cost.
In order to reach foregoing invention object, technical scheme provided by the invention is as follows:
The measurement of Big Diameter Flange surface evenness and a bearing calibration, the diameter of this flange face is greater than 3 meters, it is characterized in that, and the method comprises the steps:
The first step, cleans out flange face to be measured, removes corrosion and paint, and this flange face can be horizontal positioned, can be also slant setting or vertically places or be exactly the flange face of a handstand;
Second step can be surveyed inside and outside two flatness of enclosing according to the difference of flange face width simultaneously, surveys at most 300 points, and the horizontal accuracy of measurement can reach 0.2mm/m, and display precision is greater than 0.001mm, and maximum measuring distance is 40m;
The 3rd step, obtains the data of measuring rear flange face, analyzes data, so that the accuracy requirement of flange face judge to the flatness of Flange Plane regional as benchmark, and indicates and needs the specific region of polishing;
The 4th step, utilizes bowl formula plane polisher to carry out plane polishing, and the width of the polishing sheet on bowl formula plane polisher is 100～150mm;
The 5th step, utilizes pulse planometer to measure, and measurement result is analyzed again, judges whether to reach the accuracy requirement of Big Diameter Flange face;
The 6th step, repeats the operation of the 4th step and the 5th step, until the Big Diameter Flange face after polishing reaches the accuracy requirement of design.
In the measurement and bearing calibration of Big Diameter Flange surface evenness of the present invention, described pulse planometer includes generating laser, laser pickoff and data processor, described transmitter Emission Lasers signal, laser pickoff is placed on the measurement point position of Flange Plane and accepts the laser signal of transmitter, the data that data processor collection is surveyed, and surveyed numerical value is carried out to data analysis, draw the height difference of all measurement points with respect to Flange Plane, analyze height difference, if difference is greater than certain limit, show that this measurement point needs polishing.
In the measurement and bearing calibration of Big Diameter Flange surface evenness of the present invention, all there is flatness to require for wide flange face or flange face Internal and external cycle, pulse planometer needs the flatness of inside and outside two circles of simultaneous measurement method orchid, according to measuring numerical value, the flatness of Internal and external cycle is analyzed.When flange face width to be measured is less than 150mm, measure the flatness of the circle of any Radius in flange face; When flange face width to be measured is greater than 150mm, measure the flatness of the circle of two radiuses in flange face, the circle of two radiuses is inner ring and outer ring.
In the measurement and bearing calibration of Big Diameter Flange surface evenness of the present invention, according to the difference of measuring diameter and degree of accuracy requirement, described pulse planometer can be measured 300 points simultaneously and meet the degree of accuracy requirement of Flange Plane, level measurement precision can reach 0.2mm/m, display precision is greater than 0.001mm, and measuring distance can reach 40m.Measuring distance is 40m, and the ultimate range of generating laser and laser pickoff is 40m, if generating laser is placed on to the centre point of flange, so measurable flange diameter is 80m.
In the measurement and bearing calibration of Big Diameter Flange surface evenness of the present invention, in the 3rd step pulse planometer measure numerical value a little, a reference field of determining by three any reference points dividing equally is as datum plane, judge the height situation of each measurement point with other measurement point with respect to the difference in height of this reference field, need the position of polishing and the degree of polishing to mark on flange face.
In the measurement and bearing calibration of Big Diameter Flange surface evenness of the present invention, described bowl formula plane polisher carries out face polishing by polishing sheet and buffed surface, the diameter of described polishing sheet is 120mm, if flange face width exceedes 120mm, carry out twice or more times parallel grinding, to be polished to whole flange face.
In the measurement and bearing calibration of Big Diameter Flange surface evenness of the present invention, the method that described bowl formula plane polisher is polished to flange face is: first measured height point part is polished, the degree of polishing depends on the height value at the position of polishing, and when polishing in, will guarantee that the flange face after polishing wants transition even, to avoid occurring that flange face has step.
Based on technique scheme, the measurement of Big Diameter Flange surface evenness of the present invention and bearing calibration compared with prior art have following technological merit:
1. by method of the present invention, Big Diameter Flange is measured and proofreaied and correct, the precision of measurement is high, can guarantee that by polishing Flange Plane flatness reaches or exceed the accuracy requirement of flange design.
2. the method for invention is measured and is proofreaied and correct Big Diameter Flange, requires the status requirement of pending Flange Plane low, and Flange Plane can be level, inclination, vertical or be down flat face.
3. the method for invention is measured and is proofreaied and correct Big Diameter Flange, and the method for polishing is simply efficient, does not need large-scale specialized equipment, only needs less man power and material can guarantee the flatness of flange.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of measurement and the bearing calibration of Big Diameter Flange surface evenness of the present invention.
Fig. 2 is the instrumentation plan of flatness before Big Diameter Flange face polishing of the present invention.
Fig. 3 is the instrumentation plan of flatness after Big Diameter Flange face polishing of the present invention.
Embodiment
Below we measurement and the bearing calibration to Big Diameter Flange surface evenness of the present invention is described in further detail with specific embodiment by reference to the accompanying drawings; understand Method And Principle of the present invention and technological process in the hope of more cheer and bright, but can not limit the scope of the invention with this.
The present invention realizes lining and the correction of Flange Plane flatness by pulse planometer and bowl formula plane polisher.Concrete implementation method is first to utilize pulse planometer to measure flange surface evenness, then calculate and need the band of position of polishing and polishing requirement according to the result of measuring, recycling bowl formula plane polisher is polished according to the requirement of polishing amount to the region of needs polishing, finally recycling pulse planometer measures definite, by measuring,------process of polishing---measurement---analysis finally obtains needed flange face flatness and surface accuracy in analysis, maximum feature of the present invention is to measure Big Diameter Flange, the flange maximum gauge that can guarantee levelness can reach 80 meters.
The present invention can, according to two circles inside and outside flange face size and accuracy requirement simultaneous measurement method orchid, can measure at most 300 points, and horizontal accuracy maximum can reach 0.2mm/m, the minimum 0.001mm that reaches of display precision, and measuring distance is 40m to the maximum.When flange face width to be measured is less than 150mm, measure the flatness of the circle of any Radius in flange face; When flange face width to be measured is greater than 150mm, measure the flatness of the circle of two radiuses in flange face, the circle of two radiuses is inner ring and outer ring.
After being measured, Flange Plane according to measured data analysis, plane polishing is carried out to bowl formula plane polisher in specific region.And then measure with pulse planometer, then result is analyzed, until flatness reaches requirement.
Big Diameter Flange in embodiment is a base, the flange outer diameter of this base is 5456mm, require the maximal value (being designated hereinafter simply as: P-P) of its highs and lows must not exceed 0.2728mm according to producer, and difference between consecutive point can not exceed 0.060mm.
The measurement of Big Diameter Flange surface evenness and bearing calibration according to the present invention, according to the flow process shown in Fig. 1, comprise the steps: the disposal route of this base
The first step, cleans out Flange Plane, removes the surperficial spot such as corrosion and grease, in order to avoid affect the accurate measurement of Flange Plane.
Second step, utilizes pulse planometer to measure the flatness of Flange Plane, surveys altogether 68 points, and not having base flatness P-P before treatment is 0.805mm, and the difference of part consecutive point does not also meet the demands, and as shown in Figure 2, following table has been listed the consecutive point that exceed requirement.Here the pulse planometer of using includes generating laser, laser pickoff and data processor, transmitter Emission Lasers signal, laser pickoff is placed on the measurement point position of Flange Plane and accepts the laser signal of transmitter, the data that data processor collection is surveyed, and surveyed numerical value is carried out to data analysis, and draw the height difference of all measurement points with respect to Flange Plane, analyze height difference, if difference is greater than setting value 0.060mm, show that this measurement point needs polishing.
The 3rd step, obtains the data of measuring rear flange face, analyzes data, indicates the specific region that needs polishing.Specifically utilize pulse planometer measure numerical value a little, a reference field of determining by three any reference points dividing equally is as datum plane, judge the height situation of each measurement point with other measurement point with respect to the difference in height of this reference field, need the position of polishing and the degree of polishing to mark on flange face.
The 4th step, utilizes bowl formula plane polisher to carry out plane polishing, and described bowl formula plane polisher carries out face polishing by polishing sheet and buffed surface, the diameter of described polishing sheet is 120mm, if flange face width exceedes 120mm, carry out twice or more times parallel grinding, to be polished to whole flange face.The method that bowl formula plane polisher is polished to flange face is: first measured height point part is polished, the degree of polishing depends on the height value at the position of polishing, and when polishing in, will guarantee that the flange face after polishing wants transition even, to avoid occurring that flange face has step.
The 5th step, utilizes pulse planometer to measure, and measurement result is analyzed again, until reach the accuracy requirement of Big Diameter Flange face.
The 6th step, repeats the operation of the 4th step and the 5th step, until the Big Diameter Flange face after polishing reaches the accuracy requirement of design.
Using the present invention rear base flatness P-P that polish is 0.174mm, and consecutive point also meet the demands, and as shown in Figure 3, being compared as follows before and after consecutive point polishing shown listed:
| Adjacent period | Consecutive point difference mm before polishing | Consecutive point difference mm after polishing |
| 7-8 | 0.100 | 0.013 |
| 21-22 | 0.070 | 0.014 |
| 23-24 | 0.099 | 0.014 |
| 24-25 | 0.073 | 0.004 |
| 41-42 | 0.072 | 0.020 |
| 42-43 | 0.061 | 0.014 |
| 44-45 | 0.118 | 0.035 |
| 45-46 | 0.074 | 0.007 |
| 48-49 | 0.072 | 0.041 |
| 49-50 | 0.095 | 0.004 |
The measurement of whole base levelness and polishing work only take two people and can complete for one day.
As can be seen here, method of the present invention is processed Big Diameter Flange face, is significantly improved for aspects such as improving Flange Plane measuring accuracy and Flange Plane treatment effeciency.
Method of the present invention can be for oceanographic engineering, shipbuilding, wind-power electricity generation, measurement and the correction of all big or small flange face flatness in the fields such as machine-building.Can be specifically for marine hoist, shovel loader, ocean platform, wind-power electricity generation, shore tackle, various truck crane, naval vessels and measurement and the correction of the flange such as big gun, tank (diameter is in 80m) flatness for land.The present invention is conducive to improve the serviceable life of Big Diameter Flange, the measuring accuracy that improves Flange Plane flatness, shortening production cycle and reduces construction cost.
Claims (4)
1. the measurement of Big Diameter Flange surface evenness and a bearing calibration, the diameter of this flange face is greater than 3 meters, it is characterized in that, and the method comprises the steps:
The first step, cleans out flange face to be measured, removes corrosion and paint, and this flange face can be horizontal positioned, can be also slant setting or vertically places or be exactly the flange face of a handstand;
Second step, utilizes pulse planometer to measure the flatness of Flange Plane, surveys the flatness of inside and outside two circles according to the difference of flange face width simultaneously, it is 300 points that maximum measurement is counted, the horizontal accuracy of measuring can reach 0.2mm/m, and display precision is greater than 0.001mm, and maximum measuring distance is 40m;
The 3rd step, obtains the data of measuring rear flange face, analyzes this data, so that the accuracy requirement of flange face judge to the flatness of Flange Plane regional as benchmark, and indicates and needs the specific region of polishing;
The 4th step, utilize bowl formula plane polisher to carry out plane polishing, the width of the polishing sheet on bowl formula plane polisher is 100～150mm, described bowl formula plane polisher carries out face polishing by polishing sheet and buffed surface, the diameter of described polishing sheet is 120mm, if flange face width exceedes 120mm, carry out twice or more times parallel grinding, to be polished to whole flange face, the method that described bowl formula plane polisher is polished to flange face is: first measured height point part is polished, the degree of polishing depends on the height value at the position of polishing, and when polishing in, will guarantee that the flange face after polishing wants transition even, to avoid occurring that flange face has step,
The 5th step, utilizes pulse planometer to measure, and measurement result is analyzed again, judges whether to reach the accuracy requirement of Big Diameter Flange face;
The 6th step, repeat the operation of the 4th step and the 5th step, until the Big Diameter Flange face after polishing reaches the accuracy requirement of design, described pulse planometer includes generating laser, laser pickoff and data processor, described transmitter Emission Lasers signal, laser pickoff is placed on the measurement point position of Flange Plane and accepts the laser signal of transmitter, the data that data processor collection is surveyed, and surveyed numerical value is carried out to data analysis, draw the height difference of all measurement points with respect to Flange Plane, analyze height difference, if difference is greater than certain limit, show that this measurement point needs polishing.
2. the measurement of a kind of Big Diameter Flange surface evenness according to claim 1 and bearing calibration, it is characterized in that, when measuring distance is 40m, the ultimate range of generating laser and laser pickoff is 40m, if generating laser is placed on to the centre point of flange, measurable flange diameter can reach 80m.
3. the measurement of a kind of Big Diameter Flange surface evenness according to claim 1 and bearing calibration, it is characterized in that, in the 3rd step pulse planometer measure numerical value a little, a reference field of determining by three any reference points dividing equally is as datum plane, judge the height situation of each measurement point with other measurement point with respect to the difference in height of this reference field, need the position of polishing and the degree of polishing to mark on flange face.
4. the measurement of a kind of Big Diameter Flange surface evenness according to claim 1 and bearing calibration, is characterized in that, when flange face width to be measured is less than 150mm, measures the flatness of the circle of any Radius in flange face; When flange face width to be measured is greater than 150mm, measure the flatness of the circle of two radiuses in flange face, the circle of two radiuses is inner ring and outer ring.
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| CN201110401931.9A CN102519404B (en) | 2011-12-07 | 2011-12-07 | Measurement and correction method of flatness of large-diameter flange plane |
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| CN201110401931.9A CN102519404B (en) | 2011-12-07 | 2011-12-07 | Measurement and correction method of flatness of large-diameter flange plane |
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| CN102519404B true CN102519404B (en) | 2014-05-28 |
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| CN102975091B (en) * | 2012-11-09 | 2014-11-26 | 福建省马尾造船股份有限公司 | Base flange plane sanding technique |
| CN103453858B (en) * | 2013-09-02 | 2016-04-13 | 大族激光科技产业集团股份有限公司 | Flatness detects to be revised all-in-one and detects modification method |
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| CN107560587B (en) * | 2017-08-29 | 2020-09-01 | 广州文冲船厂有限责任公司 | Flatness detection method |
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| CN112484706A (en) * | 2020-11-17 | 2021-03-12 | 中国水电建设集团十五工程局有限公司 | Large-scale equipment high-precision flange surface levelness adjusting method |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102229085A (en) * | 2011-06-23 | 2011-11-02 | 江门市南洋船舶工程有限公司 | Onsite large-sized flange grinding machine |
| CN102252637A (en) * | 2011-04-26 | 2011-11-23 | 蓬莱巨涛海洋工程重工有限公司 | Method for detecting flatness of large-scale flange |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1632785A1 (en) * | 2004-08-25 | 2006-03-08 | Prüftechnik Dieter Busch Ag | Laser based position measuring device |
| JP4336781B2 (en) * | 2006-12-07 | 2009-09-30 | 大学共同利用機関法人 高エネルギー加速器研究機構 | Flatness measuring device |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252637A (en) * | 2011-04-26 | 2011-11-23 | 蓬莱巨涛海洋工程重工有限公司 | Method for detecting flatness of large-scale flange |
| CN102229085A (en) * | 2011-06-23 | 2011-11-02 | 江门市南洋船舶工程有限公司 | Onsite large-sized flange grinding machine |
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