CN101769724A - Method for measuring helical angle of inner-grooved copper tube - Google Patents
Method for measuring helical angle of inner-grooved copper tube Download PDFInfo
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- CN101769724A CN101769724A CN200810249813A CN200810249813A CN101769724A CN 101769724 A CN101769724 A CN 101769724A CN 200810249813 A CN200810249813 A CN 200810249813A CN 200810249813 A CN200810249813 A CN 200810249813A CN 101769724 A CN101769724 A CN 101769724A
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention relates to a method for measuring the helical angle of an inner-grooved copper tube, which requires the following tools or equipment: scissors, a rubber hammer, a steel ruler 1 and an image detector or a protractor. The measuring method comprises the following steps: vertically splitting a tube through the scissors within one step, and flattening the tube through the rubber hammer; connecting two intersection points A1 and A2 of the splitting line and the cross section of the tube through the steel ruler 1, and determining a measurement baseline A1-A2 vertical to the axis MN of the tube; measuring the included angle (X degrees) formed by the measurement baseline and a helix through the image detector or the protractor; and calculating the helical angle of the inner-grooved copper tube through the formula: Beta=90 degrees - X degrees. The determination of the measurement baseline of the invention can not be influenced by the shape of the cross section and deformation factors, thereby achieving high measurement accuracy. Moreover, the measurement is simple.
Description
Technical field
The present invention relates to a kind of measuring method of helical angle of inner-grooved copper tube.
Background technology
In the prior art, measurement about helical angle of inner-grooved copper tube occurred in GB/T 20928-2007 " seamless inner screw thread copper pipe " appendix A, and its method is: method one is that tubing is vertically cut open, flattened, find out vertical datum line, read helix angle with protractor; Method two is that section radiation instrument is surveyed helix angle; Method three is special software measuring methods.Problems affect such as end surface grinding when above-mentioned measuring method all is subjected to the copper pipe sampling and burr processing cause can not accurately determining vertical datum line, thereby influence the objectivity of measurement result.
Summary of the invention
The objective of the invention is to be to overcome above deficiency, thereby a kind of method that can accurately determine the vertical datum line measurement of tested tubing helical angle of inner-grooved copper tube is provided.
In order to reach above purpose, the scheme that the present invention adopts is: a kind of measuring method of helical angle of inner-grooved copper tube, following instrument or equipment are provided, and comprise scissors, rubber hammer, straight steel ruler 1, image detector or protractor.Described measuring method comprises the steps:
1, with scissors is disposable tubing is vertically cut open, tubing is flattened with the rubber hammer;
2, connect two intersection point A1, A2 of hatching line and the formation of tubing xsect with straight steel ruler 1, determine measuring basis line A1A2 perpendicular to tubing axial line MN;
3, the angle angle of usefulness image detector or protractor measuring basis line and threaded line formation is X °;
4, calculate the helix angle of inner screw thread copper pipe: β=90 °-X °
Described measuring basis line determines not to be subjected to the influence of shape of cross section and deformation factor.
This invention has obtained following beneficial effect: the influence of determining not to be subjected to shape of cross section and deformation factor of measuring basis line, measuring accuracy height; Measure easy.
Description of drawings
Accompanying drawing is the helical angle of inner-grooved copper tube instrumentation plan.
1 straight steel ruler among the figure
Embodiment
A kind of measuring method of helical angle of inner-grooved copper tube, at first provide following instrument: comprise scissors, rubber hammer, straight steel ruler 1, image detector or protractor, tubing is vertically cut open, flatten, determine measuring basis line perpendicular to the tubing axial line, X ° of the angle angle that forms with image detector or protractor measuring basis line and threaded line calculated the helix angle of inner screw thread copper pipe: β=90 °-X °.Utilize above-mentioned instrument or equipment that helical angle of inner-grooved copper tube is carried out measuring method for measuring, it comprises the steps:
1, with scissors is disposable tubing is vertically cut open, tubing is flattened with the rubber hammer;
2, connect two intersection point A1, A2 of hatching line and the formation of tubing xsect with straight steel ruler 1, determine measuring basis line A1A2 perpendicular to tubing axial line MN;
3, the angle angle of usefulness image detector or protractor measuring basis line and threaded line formation is X °;
4, calculate the helix angle of inner screw thread copper pipe: β=90 °-X °
Claims (1)
1. the measuring method of a helical angle of inner-grooved copper tube provides following instrument or equipment, comprises scissors, rubber hammer, straight steel ruler (1), image detector or protractor, and described measuring method comprises the steps:
A, tubing is vertically cut open, tubing is flattened with the rubber hammer with scissors is disposable;
B, two intersection point A1, A2 using straight steel ruler (1) connection hatching line and tubing xsect to form determine the measuring basis line A1A2 perpendicular to tubing axial line MN;
X ° of the angle angle that c, usefulness image detector or protractor measuring basis line and threaded line form;
D, calculate the helix angle of inner screw thread copper pipe: β=90 °-X °
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810249813A CN101769724A (en) | 2008-12-29 | 2008-12-29 | Method for measuring helical angle of inner-grooved copper tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810249813A CN101769724A (en) | 2008-12-29 | 2008-12-29 | Method for measuring helical angle of inner-grooved copper tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101769724A true CN101769724A (en) | 2010-07-07 |
Family
ID=42502726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810249813A Pending CN101769724A (en) | 2008-12-29 | 2008-12-29 | Method for measuring helical angle of inner-grooved copper tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101769724A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384729A (en) * | 2011-08-08 | 2012-03-21 | 合肥威尔燃油系统有限责任公司 | Method and device for detecting perpendicularity of screw thread |
| CN104596446A (en) * | 2015-01-30 | 2015-05-06 | 江西铜业技术研究院有限公司 | Inner grooved copper tube helix angle measuring method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2067818U (en) * | 1989-12-28 | 1990-12-19 | 哈尔滨工业大学 | Multi-functional tester for inside thread |
| JP2007248295A (en) * | 2006-03-16 | 2007-09-27 | Mitsutoyo Corp | Screw measurement method, probe for measuring screw, and screw measurement device using it |
| CN101109625A (en) * | 2007-08-01 | 2008-01-23 | 北京理工大学 | Optical method for measuring rotating angle of helical guideway in the hole |
| CN201081685Y (en) * | 2007-09-24 | 2008-07-02 | 中煤张家口煤矿机械有限责任公司 | Portable spur gear helix angle precision measuring device |
-
2008
- 2008-12-29 CN CN200810249813A patent/CN101769724A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2067818U (en) * | 1989-12-28 | 1990-12-19 | 哈尔滨工业大学 | Multi-functional tester for inside thread |
| JP2007248295A (en) * | 2006-03-16 | 2007-09-27 | Mitsutoyo Corp | Screw measurement method, probe for measuring screw, and screw measurement device using it |
| CN101109625A (en) * | 2007-08-01 | 2008-01-23 | 北京理工大学 | Optical method for measuring rotating angle of helical guideway in the hole |
| CN201081685Y (en) * | 2007-09-24 | 2008-07-02 | 中煤张家口煤矿机械有限责任公司 | Portable spur gear helix angle precision measuring device |
Non-Patent Citations (1)
| Title |
|---|
| 中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会: "《中华人民共和国国家标准无缝内螺纹铜管GB/T20928-2007》", 31 August 2007 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384729A (en) * | 2011-08-08 | 2012-03-21 | 合肥威尔燃油系统有限责任公司 | Method and device for detecting perpendicularity of screw thread |
| CN104596446A (en) * | 2015-01-30 | 2015-05-06 | 江西铜业技术研究院有限公司 | Inner grooved copper tube helix angle measuring method |
| CN104596446B (en) * | 2015-01-30 | 2017-03-15 | 江西铜业技术研究院有限公司 | A kind of measuring method of helical angle of inner-grooved copper tube |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 252600 Shandong city of Liaocheng Province Linqing City Industrial Park East two ring road Shandong albetter albronze Co. Ltd. Applicant after: CNMC Albetter Albronze Co., Ltd. Address before: 252600 Shandong city of Liaocheng Province Linqing City Industrial Park East two ring road Shandong albetter albronze Co. Ltd. Applicant before: Shandong Aobote Copper Aluminium Industry Co., Ltd. |
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| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: SHANDONG AOBOTE COPPER ALUMINIUM INDUSTRY CO., LTD. TO: CNMC ALBETTER ALBRONZE CO., LTD. |
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| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100707 |