CN204641196U - Survey the chi of internal-and external diameter - Google Patents
Survey the chi of internal-and external diameter Download PDFInfo
- Publication number
- CN204641196U CN204641196U CN201520318490.XU CN201520318490U CN204641196U CN 204641196 U CN204641196 U CN 204641196U CN 201520318490 U CN201520318490 U CN 201520318490U CN 204641196 U CN204641196 U CN 204641196U
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- China
- Prior art keywords
- line
- external diameter
- internal
- chi
- edge line
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Abstract
The utility model discloses a kind of chi surveying internal-and external diameter, relate to technical field of stationery.The chi of described survey internal-and external diameter comprises a V-type main body and circular arc portion, described circular arc portion comprises with one heart with upper arc edge line and the lower arc edge line of two different radiis of angle, described V-type main body comprises the inward flange line and outer edge line that are parallel to each other, described inward flange line and outer edge line all comprise the line segment that two become 30 ± 0.5 ° of angles, described line segment comprises graduation mark, described scale is not the actual length of line segment, scale value on inward flange line is 2tan15 ° times of corresponding line segment actual length, scale value in outer edge line is 2sin15 ° times of corresponding line segment actual length.The chi that the utility model surveys internal-and external diameter can utilize V-type main body inward flange line relatively accurately to survey 0 ~ 10cm external diameter, utilizes the outer edge line of V-type main body relatively accurately to survey 0 ~ 16cm internal diameter, and structure is simple, convenient and safe, is easy to carry about with one, practical.
Description
Technical field
The utility model relates to a kind of stationery, particularly relates to a kind of chi surveying internal-and external diameter.
Background technology
In life study, we often need the simple and quick and relatively accurate internal-and external diameter calculating circular object.Maximum instruments of current survey circle internal-and external diameter are slide measures, but price is relatively costly for students in middle and primary schools, and heaviness is not easy to carry, and intuitively can not read measurement result fast, and improper use also can damage their health.
Summary of the invention
For above-mentioned the deficiencies in the prior art, the utility model provides a kind of chi surveying internal-and external diameter.
Above-mentioned technical problem of the present utility model is solved mainly through following technical scheme.
A kind of chi surveying internal-and external diameter, the chi of described survey internal-and external diameter comprises a V-type main body and circular arc portion, described circular arc portion comprises with one heart with upper arc edge line and the lower arc edge line of two different radiis of angle, and described V-type main body comprises the inward flange line and outer edge line that are parallel to each other.
As the utility model preferred embodiment, described inward flange line and outer edge line all comprise the line segment that two become 30 ± 0.5 ° of angles, described line segment comprises graduation mark, described scale is not the actual length of line segment, scale value on inward flange line is 2tan15 ° times of corresponding line segment actual length, and the scale value in outer edge line is 2sin15 ° times of corresponding line segment actual length.
As the utility model preferred embodiment, described inward flange line and outer edge line also can be used for picture straight line, and described upper arc edge line and lower arc edge line can be used for picture circular arc line.
As the utility model preferred embodiment, the chi of described survey internal-and external diameter is symmetrical about the summit line of inward flange line outer edge line.
The chi that the utility model surveys internal-and external diameter can utilize V-type main body inward flange line relatively accurately to survey 0 ~ 10cm external diameter, utilizes the outer edge line of V-type main body relatively accurately to survey 0 ~ 16cm internal diameter, and structure is simple, convenient and safe, is easy to carry about with one, practical.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, simple introduction is done below by the accompanying drawing used required in embodiment or description of the prior art, accompanying drawing described is below only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Arc edge line on Fig. 1: 1.V type main body 2. circular arc portion 3. outer edge line 4. inward flange line 5. times arc edge lines 6..
Fig. 2: during survey external diameter, testee puts into schematic diagram, Fig. 3: survey instrumentation plan during external diameter, Fig. 4: survey mathematical principle figure during external diameter.
Fig. 5: during survey internal diameter, testee puts into schematic diagram, Fig. 6: survey instrumentation plan during internal diameter, Fig. 7: survey mathematical principle figure during internal diameter.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is elaborated.
The chi of survey internal-and external diameter as of the present utility model in Fig. 1 comprises a V-type main body and circular arc portion, this circular arc portion comprises with one heart with upper arc edge line and the lower arc edge line of two different radiis of angle, and this V-type main body comprises the inward flange line and outer edge line that are parallel to each other.
This inward flange line and outer edge line all comprise the line segment that two become 30 ± 0.5 ° of angles, this line segment comprises graduation mark, described scale is not the actual length of line segment, scale value on inward flange line is 2tan15 ° times of corresponding line segment actual length, and the scale value in outer edge line is 2sin15 ° times of corresponding line segment actual length.
This inward flange line and outer edge line also can be used for picture straight line, and on this, arc edge line and lower arc edge line can be used for picture circular arc line.
The chi of this survey internal-and external diameter is symmetrical about the summit line of inward flange line outer edge line.
The chi that this utility model surveys internal-and external diameter can utilize V-type main body inward flange line relatively accurately to survey external diameter, utilizes the outer edge line of V-type main body relatively accurately to survey internal diameter, and structure is simple, convenient and safe, is easy to carry about with one, practical.
The utility model embodiment using method is as follows.
As external diameter is surveyed in Fig. 2 ~ 4: by survey disc parallel with the face of V-type main body, move to survey justify outward flange and V-type main body inward flange line tangent, the numerical value according to graduation mark reading point of contact place is surveyed diameter of a circle size.
As external diameter is surveyed in Fig. 5 ~ 7: V-type main body is placed in above circular hole, the axis of symmetry of V-type main body is aimed at the axis of circular hole, and along the downward translation of round hole axial until the outer edge line of V-type main body with institute surveys justify inward flange tangent, according to graduation mark reading point of contact place numerical value be surveyed diameter of a circle size.
Be not limited to this, the utility model can also have various change and improvement, and all replacements of doing within spirit of the present utility model and principle and improvement, be all included within protection domain of the present utility model.
Claims (4)
1. survey the chi of internal-and external diameter for one kind, it is characterized in that: the chi of described survey internal-and external diameter comprises a V-type main body (1) and circular arc portion (2), described circular arc portion (2) comprises with one heart with upper arc edge line (6) and the lower arc edge line (5) of two different radiis of angle, and described V-type main body comprises the inward flange line (4) and outer edge line (3) that are parallel to each other.
2. a kind of chi surveying internal-and external diameter according to claim 1, it is characterized in that: described inward flange line (4) all comprises with outer edge line (3) line segment that two become 30 ± 0.5 ° of angles, described line segment comprises graduation mark, described scale is not the actual length of line segment, scale value on inward flange line is 2tan15 ° times of corresponding line segment actual length, and the scale value in outer edge line is 2sin15 ° times of corresponding line segment actual length.
3. a kind of chi surveying internal-and external diameter according to claim 1, it is characterized in that: described inward flange line (4) and outer edge line (3) also can be used for picture straight line, described upper arc edge line (6) and lower arc edge line (5) can be used for picture circular arc line.
4. a kind of chi surveying internal-and external diameter according to claim 1, is characterized in that: the chi of described survey internal-and external diameter is symmetrical about the summit line of inward flange line (4) outer edge line (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520318490.XU CN204641196U (en) | 2015-05-18 | 2015-05-18 | Survey the chi of internal-and external diameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520318490.XU CN204641196U (en) | 2015-05-18 | 2015-05-18 | Survey the chi of internal-and external diameter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204641196U true CN204641196U (en) | 2015-09-16 |
Family
ID=54093971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520318490.XU Expired - Fee Related CN204641196U (en) | 2015-05-18 | 2015-05-18 | Survey the chi of internal-and external diameter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204641196U (en) |
-
2015
- 2015-05-18 CN CN201520318490.XU patent/CN204641196U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150916 Termination date: 20160518 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |