CN101270971A - Production method of small bore diameter measurer - Google Patents
Production method of small bore diameter measurer Download PDFInfo
- Publication number
- CN101270971A CN101270971A CNA2008100255077A CN200810025507A CN101270971A CN 101270971 A CN101270971 A CN 101270971A CN A2008100255077 A CNA2008100255077 A CN A2008100255077A CN 200810025507 A CN200810025507 A CN 200810025507A CN 101270971 A CN101270971 A CN 101270971A
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- Prior art keywords
- cone
- scale
- value
- inner diameter
- aperture value
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Abstract
The invention discloses a method for manufacturing small aperture measurer, which includes the following steps: (A) alloy steel materials are adopted to manufacture a cone, the size of the cone angle Alpha of the cone is 1-6 degrees, and the height of the cone is not limited; (B) the cross section of the core is an isosceles triangle, and the inner diameter scale is labeled on one waist of the isosceles triangle, the labeled value of each inner diameter scale is calculated by the similar triangle principle, that is calculating according to the formula aperture value R=2L*sin(Alpha/2), then the nth aperture value Rn=R/L*Ln; (C) the distance between the adjacent scales is set as 0.1mm. The invention has simple fabrication techniques and is easy for batch production, and the inner diameter of small tubular or cylinder-shaped hole can be directly read, and the accuracy in measurement is especially high for holes with diameter less than 1mm.
Description
Technical field
The present invention relates to a kind of manufacture method of survey instrument, particularly be used to measure the manufacture method of tubulose or tubular small bore diameter measurer.
Background technology
The instrument of measuring at present tubular or tubulose internal diameter is a lot, and commonly used have micrometer inside caliper, clearance gauge etc., but the defective of these survey instruments is: be difficult to measure for the very little aperture of internal diameter, and can not directly measure concrete numerical value.
Summary of the invention
The objective of the invention is the deficiency that directly to measure small-bore numerical value in the prior art for overcoming, a kind of manufacture method of small bore diameter measurer is provided, can directly read the numerical value of measured small-bore in convenient and simple ground with the measuring appliance that this method is made.
The technical solution used in the present invention is in turn include the following steps: (A) adopt alloy steel material to make a cone, the size of the cone angle of this cone is 1～6 °, and the height of cone does not limit; (B) be that a waist of isosceles triangle is marked with the internal diameter scale in the cone cross section, adopt the principle of similar triangles to calculate the mark value of each internal diameter scale, promptly the formula according to aperture value R=2L * sin (α/2) calculates, so n aperture value R
n=R/L * L
n(C) distance between adjacent scale is made as 0.1mm.
The invention has the beneficial effects as follows:
1, manufacture craft is simple, is easy to produce in batches, can directly read the hole diameter of tubulose or tubular.
2, the measuring accuracy height of measuring appliance, especially for the measurement of diameter less than the small-bore of 1mm, its precision can determine the accuracy rating of measurement according to the size of cone angle.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Fig. 1 is a front view of the present invention;
Fig. 2 is the upward view of Fig. 1.
Embodiment
Shown in Fig. 1～2, this measuring appliance is a cone, adopts alloy steel material to be made into, and can adopt the pressing mold disposal molding, perhaps finishing production.The size of the cone angle of cone can be 1～6 ° of unspecified angle, and the height of cone does not limit, and can decide according to the scope of concrete measurement.A waist that in the cone cross section is isosceles triangle 1 is marked with internal diameter scale 2, and the distance between adjacent scale is 0.1mm.The numerical value of internal diameter scale 2 adopts the principle of similar triangles to calculate the mark value of each internal diameter scale 2, and promptly the formula according to measured aperture diameter measured value R=2L * sin (α/2) calculates R, and wherein L is that isosceles triangle 1 waist is long.When adopting the mark of similar triangles, n aperture value R so
n=R/L * L
n, L wherein
nBe that corresponding aperture value is R
nThe waist of isosceles triangle 1 long.
The precision that the size decision of cone angle is measured, α is more little, and the measurement scale value of mark is big more at interval, and its measuring accuracy is high more.Be R
n-R
N-1=0.1mm, so, the distance that is reflected between the last adjacent scale on cone inclined-plane is L
n-L
N-1, as follows with the formula reasoning of similar triangles:
This shows that the measurement scale value of mark is inversely proportional to cone angle at interval.
When cone angle is 6 °, establish the long 200mm of being of hypotenuse of cone, then the scope of Ce Lianging is calculated as in theory:
Be divided into 0.1mm mark scale mutually by the inner diameter values mark scale of measuring tubule is measured, then the trueness error of actual measurement satisfies the needs of ordinary surveying fully less than 0.05mm.
The present invention can measure infinitesimal with the tubulose inner diameter values in theory, but in fact people's visual range does not reach, and therefore can measure below the internal diameter 1mm.
Claims (1)
1. the manufacture method of a small bore diameter measurer in turn includes the following steps it is characterized in that:
(A) adopt alloy steel material to make a cone, the size of the cone angle of this cone is 1～6 °, and the height of cone does not limit;
(B) be that a waist of isosceles triangle (1) is marked with internal diameter scale (2) in the cone cross section, the principle of employing similar triangles is calculated the mark value of each internal diameter scale (2), promptly the formula according to aperture value R=2L * sin (α/2) calculates, so n aperture value R
n=R/L * L
n
(C) distance between adjacent scale is made as 0.1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100255077A CN101270971A (en) | 2008-05-07 | 2008-05-07 | Production method of small bore diameter measurer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100255077A CN101270971A (en) | 2008-05-07 | 2008-05-07 | Production method of small bore diameter measurer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101270971A true CN101270971A (en) | 2008-09-24 |
Family
ID=40005088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100255077A Pending CN101270971A (en) | 2008-05-07 | 2008-05-07 | Production method of small bore diameter measurer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101270971A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103317161A (en) * | 2013-06-27 | 2013-09-25 | 苏州边枫电子科技有限公司 | Drilling device capable of automatically selecting corresponding drill bits |
| CN111947534A (en) * | 2020-07-29 | 2020-11-17 | 江苏理工学院 | Device and method for detecting position degree and aperture of spatial different-surface hole |
-
2008
- 2008-05-07 CN CNA2008100255077A patent/CN101270971A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103317161A (en) * | 2013-06-27 | 2013-09-25 | 苏州边枫电子科技有限公司 | Drilling device capable of automatically selecting corresponding drill bits |
| CN111947534A (en) * | 2020-07-29 | 2020-11-17 | 江苏理工学院 | Device and method for detecting position degree and aperture of spatial different-surface hole |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080924 |