CN2081971U - Radius gauge for internal circular arc - Google Patents
Radius gauge for internal circular arc Download PDFInfo
- Publication number
- CN2081971U CN2081971U CN 90218334 CN90218334U CN2081971U CN 2081971 U CN2081971 U CN 2081971U CN 90218334 CN90218334 CN 90218334 CN 90218334 U CN90218334 U CN 90218334U CN 2081971 U CN2081971 U CN 2081971U
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- China
- Prior art keywords
- circular arc
- internal circular
- garden
- radius
- arc
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The utility model is used to directly measure the internal circular arc in the usual range. The utility model has the advantages of convenient portability, convenient operation and high precision. The utility model is a radius gauge for internal circular arc which is suitable for use in the field to directly measure the internal circular arc, particularly measure the internal circular arc with the centre angle smaller than 180 DEG. The radius gauge for internal circular arc solves the problem that the production field has no instrument to measure the internal circular arc with the centre angle smaller than 180 DEG. The utility model has a main scale and two auxiliary scales which are matched with each other, and the structure is more simple than the prior instruments, such as the universal tool microscope, the saddle gauge, etc. The two identical and crossed auxiliary scales attach the surface of the internal circular arc, and the crossing point of the two auxiliary scales is adjusted to make the scales equal. The main scale is used to directly measure the distance from the crossing point of the two auxiliary scales to the internal circular arc, and the instance is the radius of the internal circular arc. The spare parts with different lengths are combined and adjusted to enlarge the range of measurement, and the scale is additionally provided with a vernier.
Description
The present invention is with directly measuring the interior interior garden arc radius of usual range, is specially adapted to heart angle, garden less than 180 ° interior garden arc radius.
Existing heart angle, garden is less than 180 ° interior garden arc radius, and measuring technique all is to adopt to measure indirectly by calculating the back to obtain the result's.As " sagitta chord length method ", saddle type rule or the like.Surveying instrument was both complicated, can not directly record numerical value again.The on-the-spot extremely inconvenience of using.
The objective of the invention is to design a kind of easy to carry, be convenient to operation, be applicable to garden arc radius in the on-the-spot a kind of direct measurement of using, be specially adapted to heart angle, garden less than 180 ° interior garden arc apparatus for measuring radius.
The present invention theorem of " perpendicular bisector of garden chord length must pass through the garden heart " in the plane geometry and the theorem of " the isometric string of two-phase equates apart from garden heart distance in the same garden ".In making among two mutually isometric strings of garden arc vertical line isometric and crossing, heart position, arc garden, garden in obtaining.Directly measure the distance of the garden heart to the garden arc.
Promptly use two identical and crossing secondary chis, arc surface, garden (as Fig. 1) in being affixed on.Adjust two secondary chi joinings, make it scale and equate.Directly measure the distance of two secondary chi intersection points with main scale, garden arc radius in being to interior garden arc.
The present invention is used arc radius in garden in the direct measurement by main scale, secondary chi.Instruments such as the universal tool-measuring microscope that texture ratio now adopts, saddle type rule are much simple, carry and make the apparatus practicality.Solved the instrument problem of heart angle, on-the-spot no direct measurement garden of using of producing less than garden arc in 180 °.
Further invention of the present invention is that major and minor chi adopts combined type respectively, adjusts the expansion measurement range with the combination of various different lengths.On main scale, increase vernier caliper, improve readable range.
Accompanying drawing has been described one embodiment of the present of invention:
The embodiment that accompanying drawing is described be a kind of basic measuring instrument, and 1. 3. 2. (there is scale at the back side) and main scale pass major-minor chi centre slotted hole with the adjustment pair and assemble by two secondary chis.
Unscrew during use and adjust pair 3., 1. two secondary chis are not overlapped, and it is affixed on tested interior arc surface, garden (as Fig. 1).Adjusting two secondary chis equates its scale.Again 4. the chaining pin of main scale is affixed on the surface (as Fig. 1) of interior garden arc.Be tightened and adjust pair 3..Read and adjust 3. 5. high scale value of institute's cuing scale of secondary chi.
The crossfoot of secondary chi 6. reach perpendicular chi 7. reach chaining pin 4., 5. scale make the different spare part of several group length, then can measure the radius in the different range when doing various combination, do a connecting piece 8. spare part link up then enlarge measure in garden arc radius.
4. increase a vernier caliper at scale on and 9. can also improve reading accuracy.
Claims (4)
1, the measuring instrument of garden arc radius in a kind of direct measurement, it is characterized in that: the contact constitutes two strings at least in twos, and determines the interior garden arc apparatus for measuring radius of interior arc garden, garden heart position manufacturing with the perpendicular bisector intersection point of this two string.
2, according to claim 1 described measuring instrument, it is characterized in that: 1. 2. 3. assemble with adjusting pair with main scale by two secondary chis;
(1) secondary chi: arc garden, the garden heart in being used for determining;
(2) main scale: garden arc radius in being used to measure;
(3) adjust pair: be used for connecting, adjust, fix primary and secondary chi and indication reading value.
3, according to claim 1. or 2. described measuring instruments, it is characterized in that: the major and minor chi adjustment that is combined into the different length spare part enlarges measurement range.
4, according to claim 1. or 2. described measuring instruments, it is characterized in that: a vernier scale is arranged on the main scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90218334 CN2081971U (en) | 1990-08-19 | 1990-08-19 | Radius gauge for internal circular arc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90218334 CN2081971U (en) | 1990-08-19 | 1990-08-19 | Radius gauge for internal circular arc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2081971U true CN2081971U (en) | 1991-07-31 |
Family
ID=4897177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90218334 Withdrawn CN2081971U (en) | 1990-08-19 | 1990-08-19 | Radius gauge for internal circular arc |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2081971U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226680A (en) * | 2011-04-09 | 2011-10-26 | 中天建设集团有限公司中山分公司 | Bend steel bar inner arc radius measuring pair ruler |
| CN102589396A (en) * | 2012-03-21 | 2012-07-18 | 中铁隆昌铁路器材有限公司 | Three-point identifying arc measuring instrument and measuring method |
| CN102661699A (en) * | 2012-05-15 | 2012-09-12 | 贵州红湖发动机零部件有限公司 | Precision measurement method of large-radius short arc part |
| CN102809342A (en) * | 2012-07-09 | 2012-12-05 | 平高集团有限公司 | Aligning mechanism for arc radius measuring device |
| CN102818501A (en) * | 2012-07-09 | 2012-12-12 | 平高集团有限公司 | Arc radius measuring device |
| CN102878967A (en) * | 2012-07-27 | 2013-01-16 | 中国航空工业集团公司北京航空精密机械研究所 | Method for accurately measuring sphere diameter dimension of incomplete concave spherical surface |
| CN103727861A (en) * | 2012-10-10 | 2014-04-16 | 张瑞强 | Circular arc radius measuring ruler |
| CN104501727A (en) * | 2014-12-17 | 2015-04-08 | 重庆望江工业有限公司 | Measurement method of short circular-arc radius sample plate |
| CN111735364A (en) * | 2020-08-17 | 2020-10-02 | 广东电网有限责任公司东莞供电局 | Electric power heavy-calibre pipeline size measurement device |
-
1990
- 1990-08-19 CN CN 90218334 patent/CN2081971U/en not_active Withdrawn
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226680A (en) * | 2011-04-09 | 2011-10-26 | 中天建设集团有限公司中山分公司 | Bend steel bar inner arc radius measuring pair ruler |
| CN102589396A (en) * | 2012-03-21 | 2012-07-18 | 中铁隆昌铁路器材有限公司 | Three-point identifying arc measuring instrument and measuring method |
| CN102589396B (en) * | 2012-03-21 | 2014-02-26 | 中铁隆昌铁路器材有限公司 | Three-point identifying arc measuring instrument and measuring method |
| CN102661699A (en) * | 2012-05-15 | 2012-09-12 | 贵州红湖发动机零部件有限公司 | Precision measurement method of large-radius short arc part |
| CN102809342B (en) * | 2012-07-09 | 2013-12-11 | 平高集团有限公司 | Aligning mechanism for arc radius measuring device |
| CN102818501A (en) * | 2012-07-09 | 2012-12-12 | 平高集团有限公司 | Arc radius measuring device |
| CN102818501B (en) * | 2012-07-09 | 2013-12-11 | 平高集团有限公司 | Arc radius measuring device |
| CN102809342A (en) * | 2012-07-09 | 2012-12-05 | 平高集团有限公司 | Aligning mechanism for arc radius measuring device |
| CN102878967A (en) * | 2012-07-27 | 2013-01-16 | 中国航空工业集团公司北京航空精密机械研究所 | Method for accurately measuring sphere diameter dimension of incomplete concave spherical surface |
| CN103727861A (en) * | 2012-10-10 | 2014-04-16 | 张瑞强 | Circular arc radius measuring ruler |
| CN104501727A (en) * | 2014-12-17 | 2015-04-08 | 重庆望江工业有限公司 | Measurement method of short circular-arc radius sample plate |
| CN111735364A (en) * | 2020-08-17 | 2020-10-02 | 广东电网有限责任公司东莞供电局 | Electric power heavy-calibre pipeline size measurement device |
| CN111735364B (en) * | 2020-08-17 | 2020-11-13 | 广东电网有限责任公司东莞供电局 | Electric power heavy-calibre pipeline size measurement device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |