CN102435124A - Steel pipe out-of-roundness measuring method and measuring scale thereof - Google Patents
Steel pipe out-of-roundness measuring method and measuring scale thereof Download PDFInfo
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- CN102435124A CN102435124A CN2011102648195A CN201110264819A CN102435124A CN 102435124 A CN102435124 A CN 102435124A CN 2011102648195 A CN2011102648195 A CN 2011102648195A CN 201110264819 A CN201110264819 A CN 201110264819A CN 102435124 A CN102435124 A CN 102435124A
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Abstract
The invention relates to the field of steel pipe out-of-roundness measurement, in particular to a steel pipe out-of-roundness measuring method and a measuring scale thereof. The invention is characterized in that: the difference between the maximum inner diameter value and the minimum inner diameter value in one circle of the end of a measured steel pipe is the out-of-roundness of the steel pipe, and the measuring scale is provided with a three-point support on the inner wall of the steel pipe, which ensures that the measuring scale perpendicularly passes through the axis of the steel pipe. The specific operating steps of the steel pipe out-of-roundness measurement method are as follows: (1) the measuring scale is inserted into the inner diameter of the pipe end, and a base, a probe and the inner wall of the steel pipe form the three-point support; (2) a scale in a scale window on a scale rod, at which the tail of the probe is positioned, is read; and (3) the measuring scale is rotated for a circle along the inner wall of the steel pipe, the change of the scales at which the tail of the probe is positioned in the scale window is observed in the process of rotation, and the difference between the maximum reading and the minimum reading is the out-of-roundness of the steel pipe. Compared with the prior art, the measuring method and the measuring scale have the advantages that: the current practical requirements of steel pipe out-of-roundness measurement are met, the workload of measurement is reduced, the operation is simple, the measurement is convenient, the accuracy of measurement is increased, and the out-of-roundness of different pipe diameters can be measured.
Description
Technical field
The present invention relates to steel pipe out-of-roundness detection range, relate in particular to a kind of steel pipe non-roundness measurement method and dip stick thereof.
Background technology
Be that spiral welded pipe or ERW all exist certain out-of-roundness error in the process of making, for guaranteeing that steel pipe is qualified, the out-of-roundness that must detect these steel pipes is in the scope of quality standard regulation.Conventional measuring method is to measure the external diameter of the pipe end of steel pipe with slide calliper rule, through repeatedly measuring, finds out the maximum gauge and the minimum diameter of steel pipe, and the difference that deducts minimum diameter with maximum gauge then is the out-of-roundness of steel pipe.Owing in the process of measuring, need repeatedly more just can find maximum gauge and minimum diameter, also need do difference after writing down numerical value, waste time and energy in the process of measurement, be easy to generate error.Slide calliper rule are at 2 with outer diameter of steel pipes and contact in addition, when two measurement point lines of slide calliper rule are vertical with the steel pipe axle center, can not bring measuring error.
Summary of the invention
The purpose of this invention is to provide a kind of steel pipe non-roundness measurement method and dip stick thereof, overcome the deficiency of prior art, reduce the surveying work amount, improve the accuracy of measuring, convenient measurement satisfies the requirement of present steel pipe non-roundness measurement.
For solving the problems of the technologies described above, technical scheme of the present invention is:
A kind of steel pipe non-roundness measurement method; The difference of measuring pipe end one all interior maximum inner diameter values and minimum diameter value is the steel pipe out-of-roundness, and dip stick is provided with supported at three point on the steel pipe inwall, guarantee that the dip stick axis normal is through the steel pipe axle center; Reduce measuring error, its concrete operations step is following:
1) dip stick is stretched into the pipe end inner radius, spring is in confined state, and roller on the base and probe and steel pipe inwall form supported at three point, according to 3 principles of confirming a circle, guarantees that dip stick is in the state of vertical steel inside pipe wall;
2) read the probe tail end place scale of scale bar high scale window, the probe tail end is as far as possible in the scale middle position;
3) dip stick is rotated a circle along the steel pipe inwall, note observing the variation of probe tail end place scale in the dial window in the rotary course, can read the difference between maximum scale and the minimum scale, this difference is the out-of-roundness of steel pipe.
A kind of dip stick comprises base, swivel nut, guide pillar, spring, scale bar and probe, and base is a T shape structure; Symmetria bilateralis is provided with roller, is connected through swivel nut between base and the scale bar, and the scale bar front end is provided with probe; Scale bar heart portion is provided with guide pillar; Be provided with spring between guide pillar and the probe tail end, scale bar is provided with dial window, and the compression zone of spring is in thickness of steel pipe and out-of-roundness variation range.
Also be provided with extension rod in the middle of the said swivel nut.
Said probe front end is perfectly round.
Compared with prior art, the invention has the beneficial effects as follows: satisfy the actual requirement of present steel pipe non-roundness measurement, reduce the surveying work amount; Simple to operate, convenient measurement improves the accuracy of measuring; Measuring speed is fast, can satisfy the measurement of different tube diameters out-of-roundness through adjustment swivel nut and extension rod.
Description of drawings
Fig. 1 is dip stick embodiment one structural representation of the present invention;
Fig. 2 is dip stick embodiment two structural representations of the present invention.
Among the figure: 1-base 2-swivel nut 3-guide pillar 4-spring 5-scale bar 6-probe 7-roller 8-jump ring 9-dial window 10-steel pipe 11-extension rod
Embodiment
Be described further below in conjunction with the accompanying drawing specific embodiments of the invention:
Seeing Fig. 1, is a kind of dip stick embodiment one structural representation of the present invention, comprises base 1, swivel nut 2, guide pillar 3, spring 4, scale bar 5 and pops one's head in 6; Base 1 is a T shape structure, and both sides are arranged with roller 7 through jump ring 8, is connected through swivel nut 2 between base 1 and the scale bar 5; Scale bar 5 front ends are provided with probe 6, and scale bar 5 heart portions are provided with guide pillar 3, are provided with spring 4 between guide pillar 3 and probe 6 tail ends; Scale bar 5 is provided with dial window 9, and through calculating, the compression zone of spring 4 is in thickness of steel pipe and out-of-roundness variation range; 6 front ends of popping one's head in are perfectly round, and two rollers 7 form supported at three point with probe 6 and steel pipe 10 inwalls, according to 3 principles of confirming a circle; Guarantee that dip stick is in plumbness all the time at steel pipe 10 inwalls, the measuring error that cause in out of plumb steel pipe axle center when overcoming dip stick and contacting with 2 of steel pipe inwalls.
When measuring φ 219mm steel pipe, dip stick can move freely at steel pipe 10 inwalls, even there is the inside weld reinforcement also can not influence the rotation of roller 7.Swivel nut 2 outside surfaces are done annular knurl and are handled, and conveniently hold, and there is internal thread at inner two ends.Guide pillar 3 guarantees that spring 4 is in correct position; Spring 4 is a compression spring, through the compression and the resilience of spring, probe 6 is contacted all the time with steel pipe 10 inwalls.When spring 4 did not compress, roller 7 was adjusted by outer diameter of steel pipes with the distance of probe 6, and after length of spring compressed, the probe afterbody should be wanted the scale centre position, and when preventing that out-of-roundness is excessive, the no to scale scope causes and measures failure.
Seeing Fig. 2, is a kind of dip stick embodiment two structural representations of the present invention, when measuring the big caliber steel pipe of φ 630mm, also can establish extension rod 11 in the middle of the swivel nut 2, and other structure is with embodiment one.
A kind of steel pipe non-roundness measurement of the present invention method; The difference that only needs to measure pipe end one all interior maximum inner diameters and minimum diameter is the steel pipe out-of-roundness; And needn't accurately measure the concrete inner diameter values in everywhere, dip stick is provided with supported at three point on the steel pipe inwall, guarantee that dip stick vertically passes through the steel pipe axle center; Reduce measuring error, its concrete operations step is following:
1) dip stick is stretched into the pipe end inner radius, base and probe and steel pipe inwall form supported at three point, guarantee that dip stick is in vertical steel inside pipe wall state;
2) read the probe tail end place scale of scale bar high scale window, the probe tail end is as far as possible in the scale middle position, conveniently to read scale;
3) holding swivel nut rotates a circle dip stick along the steel pipe inwall; Note observing the variation of probe tail end place scale in the dial window in the rotary course; The reading of probe tail end when reading corresponding maximum inner diameter and minimum diameter simultaneously, full-scale reading and least count difference are the out-of-roundness of steel pipe.
Claims (4)
1. steel pipe non-roundness measurement method; It is characterized in that; The difference of measuring pipe end one all interior maximum inner diameter values and minimum diameter value is the steel pipe out-of-roundness, and dip stick is provided with supported at three point on the steel pipe inwall, guarantee that the dip stick axis normal is through the steel pipe axle center; Reduce measuring error, its concrete operations step is following:
1) dip stick is stretched into the pipe end inner radius, spring is in confined state, and roller on the base and probe and steel pipe inwall form supported at three point, according to 3 principles of confirming a circle, guarantees that dip stick is in the state of vertical steel inside pipe wall;
2) read the probe tail end place scale of scale bar high scale window, the probe tail end is as far as possible in the scale middle position;
3) dip stick is rotated a circle along the steel pipe inwall, note observing the variation of probe tail end place scale in the dial window in the rotary course, can read the difference between maximum scale and the minimum scale, this difference is the out-of-roundness of steel pipe.
2. a dip stick of realizing the said measuring method of claim 1 is characterized in that, comprises base, swivel nut, guide pillar, spring, scale bar and probe; Base is a T shape structure, and symmetria bilateralis is provided with roller, is connected through swivel nut between base and the scale bar; The scale bar front end is provided with probe, and scale bar heart portion is provided with guide pillar, is provided with spring between guide pillar and the probe tail end; Scale bar is provided with dial window, and the compression zone of spring is in thickness of steel pipe and out-of-roundness variation range.
3. a kind of dip stick according to claim 2 is characterized in that, also is provided with extension rod in the middle of the said swivel nut.
4. according to claim 2 or 3 described a kind of dip sticks, it is characterized in that said probe front end is perfectly round.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102648195A CN102435124A (en) | 2011-09-08 | 2011-09-08 | Steel pipe out-of-roundness measuring method and measuring scale thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102648195A CN102435124A (en) | 2011-09-08 | 2011-09-08 | Steel pipe out-of-roundness measuring method and measuring scale thereof |
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| CN102435124A true CN102435124A (en) | 2012-05-02 |
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| CN2011102648195A Pending CN102435124A (en) | 2011-09-08 | 2011-09-08 | Steel pipe out-of-roundness measuring method and measuring scale thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749059A (en) * | 2012-07-20 | 2012-10-24 | 上海交通大学 | Dual-feed type device for measuring roundness and cylindricity |
| CN103090765A (en) * | 2013-01-28 | 2013-05-08 | 江苏一汽铸造股份有限公司 | Wind-electricity bearing-seat size and geometric-tolerance detection tool and installation detection method thereof |
| CN103267504A (en) * | 2013-04-24 | 2013-08-28 | 中石化石油工程机械有限公司沙市钢管厂 | Measurement instrument for ellipticity of circular tube |
| CN103615946A (en) * | 2013-10-18 | 2014-03-05 | 中建钢构有限公司 | Automatic positioner of pipe column circle center |
| CN104764387A (en) * | 2015-03-25 | 2015-07-08 | 河南科隆石化装备有限公司 | Measuring rod for measuring cylinder ellipse |
| CN104981679A (en) * | 2013-02-04 | 2015-10-14 | 梅西耶-道提有限公司 | Deformation detection tool & method for detecting deformation |
| CN105783671A (en) * | 2016-05-13 | 2016-07-20 | 范昕昀 | Large-size ring body sealed surface circle roundness calibration device |
| CN106197275A (en) * | 2016-07-21 | 2016-12-07 | 天津大学 | Radiographic measurement extracts the blind cylindrical hole central authorities arbitrarily face heart and sits calibration method |
| CN106403782A (en) * | 2016-06-23 | 2017-02-15 | 芜湖新兴铸管有限责任公司 | Detection tool for casting pipe fitting internal diameter roundness degree tolerance |
| CN107747896A (en) * | 2017-11-03 | 2018-03-02 | 武汉理工大学 | A kind of accurate bended pipe curvature measurement device |
| CN110671997A (en) * | 2019-10-17 | 2020-01-10 | 鲍存明 | Circular component roundness running-in measuring tool |
| CN113566674A (en) * | 2021-06-29 | 2021-10-29 | 中冶(上海)钢结构科技有限公司 | Roundness measuring scale for round pipe |
| CN113945138A (en) * | 2021-11-01 | 2022-01-18 | 安徽省广德中鼎汽车工具有限公司 | External surface radian detection device for wheel maintenance and use method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2705773Y (en) * | 2004-05-25 | 2005-06-22 | 焦作工学院 | Internal diameter measurer |
| CN201535658U (en) * | 2009-11-10 | 2010-07-28 | 镇瑜 | Pipeline roundness measuring instrument |
-
2011
- 2011-09-08 CN CN2011102648195A patent/CN102435124A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2705773Y (en) * | 2004-05-25 | 2005-06-22 | 焦作工学院 | Internal diameter measurer |
| CN201535658U (en) * | 2009-11-10 | 2010-07-28 | 镇瑜 | Pipeline roundness measuring instrument |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749059B (en) * | 2012-07-20 | 2015-01-28 | 上海交通大学 | Dual-feed type device for measuring roundness and cylindricity |
| CN102749059A (en) * | 2012-07-20 | 2012-10-24 | 上海交通大学 | Dual-feed type device for measuring roundness and cylindricity |
| CN103090765A (en) * | 2013-01-28 | 2013-05-08 | 江苏一汽铸造股份有限公司 | Wind-electricity bearing-seat size and geometric-tolerance detection tool and installation detection method thereof |
| CN103090765B (en) * | 2013-01-28 | 2016-04-27 | 江苏一汽铸造股份有限公司 | Wind-electricity shaft bearing size and form and position tolerance testing tool and detection method is installed |
| CN104981679A (en) * | 2013-02-04 | 2015-10-14 | 梅西耶-道提有限公司 | Deformation detection tool & method for detecting deformation |
| CN103267504A (en) * | 2013-04-24 | 2013-08-28 | 中石化石油工程机械有限公司沙市钢管厂 | Measurement instrument for ellipticity of circular tube |
| CN103267504B (en) * | 2013-04-24 | 2015-09-09 | 中石化石油工程机械有限公司沙市钢管厂 | Measurement instrument for ellipticity of circular tube |
| CN103615946B (en) * | 2013-10-18 | 2016-08-17 | 中建钢构有限公司 | Automatic positioner of pipe column circle center |
| CN103615946A (en) * | 2013-10-18 | 2014-03-05 | 中建钢构有限公司 | Automatic positioner of pipe column circle center |
| CN104764387A (en) * | 2015-03-25 | 2015-07-08 | 河南科隆石化装备有限公司 | Measuring rod for measuring cylinder ellipse |
| CN105783671A (en) * | 2016-05-13 | 2016-07-20 | 范昕昀 | Large-size ring body sealed surface circle roundness calibration device |
| CN105783671B (en) * | 2016-05-13 | 2019-02-19 | 佛山博斯途密封技术有限公司 | A kind of large scale ring body sealing surface circularity calibrating installation |
| CN106403782A (en) * | 2016-06-23 | 2017-02-15 | 芜湖新兴铸管有限责任公司 | Detection tool for casting pipe fitting internal diameter roundness degree tolerance |
| CN106197275A (en) * | 2016-07-21 | 2016-12-07 | 天津大学 | Radiographic measurement extracts the blind cylindrical hole central authorities arbitrarily face heart and sits calibration method |
| CN106197275B (en) * | 2016-07-21 | 2019-03-12 | 天津大学 | Any face heart in blind cylindrical hole center is extracted in radiographic measurement sits calibration method |
| CN107747896A (en) * | 2017-11-03 | 2018-03-02 | 武汉理工大学 | A kind of accurate bended pipe curvature measurement device |
| CN107747896B (en) * | 2017-11-03 | 2020-11-06 | 武汉理工大学 | Accurate measurement method for curvature of bent steel pipe |
| CN110671997A (en) * | 2019-10-17 | 2020-01-10 | 鲍存明 | Circular component roundness running-in measuring tool |
| CN110671997B (en) * | 2019-10-17 | 2021-07-23 | 河南省隆邦勘测规划设计工程有限公司 | Circular component roundness running-in measuring tool |
| CN113566674A (en) * | 2021-06-29 | 2021-10-29 | 中冶(上海)钢结构科技有限公司 | Roundness measuring scale for round pipe |
| CN113945138A (en) * | 2021-11-01 | 2022-01-18 | 安徽省广德中鼎汽车工具有限公司 | External surface radian detection device for wheel maintenance and use method thereof |
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Application publication date: 20120502 |