CN204404971U - A kind of arc measuring instrument - Google Patents
A kind of arc measuring instrument Download PDFInfo
- Publication number
- CN204404971U CN204404971U CN201520000712.3U CN201520000712U CN204404971U CN 204404971 U CN204404971 U CN 204404971U CN 201520000712 U CN201520000712 U CN 201520000712U CN 204404971 U CN204404971 U CN 204404971U
- Authority
- CN
- China
- Prior art keywords
- chi
- paper centering
- centering scale
- scale
- coordinatometer
- Prior art date
- 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.)
- Expired - Fee Related
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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The utility model discloses a kind of apparatus for measuring radius of circular arc, be made up of paper centering scale, coordinatometer, rotation chi and at least one slip chi; The rotation chi that can horizontally rotate around paper centering scale is connected with at described paper centering scale blade point midway; Described coordinatometer is fixed on paper centering scale upper end; Described slip chi also can centrally chi horizontal slip perpendicular to paper centering scale.The utility model has the advantages that: the complex steps overcoming multiple types of tools combined measurement result of calculation in current arc radius metering system, it is being produced and can determine the tangent line of one section of circular arc at certain point in teaching simply, accurately and rapidly, record arc radius length, and student can be helped in teaching thoroughly to understand sine, circle and tangential radii, the relation of inscribed triangle.
Description
Technical field
The utility model relates to a kind of apparatus for measuring radius of circular arc integrating educational aid and Machine Design.
Background technology
Circular arc is one of most basic plane curve, all relates generally in teaching and Machine Design.Arc radius is an important parameter of circular arc, and current arc radius metering system mostly is multiple types of tools combined measurement and calculates and try to achieve result, in teaching and very inconvenient and measuring error is serious in producing.
Summary of the invention
The purpose of this utility model is to overcome above deficiency, provides a kind of and makes simply, easy and simple to handle, degree of accuracy height apparatus for measuring radius of circular arc.
The technical scheme that the utility model adopts is:
A kind of apparatus for measuring radius of circular arc, is characterized in that: be made up of paper centering scale, coordinatometer, rotation chi, at least one slip chi; The rotation chi that can horizontally rotate around paper centering scale is connected with at described paper centering scale blade point midway; Described coordinatometer is fixed on paper centering scale upper end; Described slip chi also can centrally chi horizontal slip perpendicular to paper centering scale.Described rotation chi is connected with paper centering scale by pin, can rotate around paper centering scale planar 360 degree.Described slip chi is connected with paper centering scale by sliding component, can at paper centering scale plane slide anteroposterior.Be printed on a center scale mark in the middle of described coordinatometer lower end, coordinatometer is fixed on paper centering scale upper end, and the center scale mark of coordinatometer overlaps with the zero graduation line of paper centering scale middle position.Described paper centering scale and coordinatometer also independently can combine the tangent line chi being configured for determining circular arc tangential line.The scale mark of coordinatometer is drawn as by transverse and longitudinal scale mark is orthogonal, the equal readable of transverse and longitudinal.Described paper centering scale, coordinatometer, rotation chi, slip chi are all transparent materials.
The beneficial effects of the utility model are: make simple, easy and simple to handle, measuring accuracy is high.
Accompanying drawing explanation
Fig. 1 is essential structure figure of the present utility model;
Fig. 2 is the schematic diagram that the utility model surveys circular arc;
Fig. 3 is the tangent line chi schematic diagram that the utility model is formed;
In figure, 1-paper centering scale, 2-coordinatometer, 3-rotates chi, 4-slip chi, 5-pin, 6-sliding component.
Embodiment
See Fig. 1, illustrated apparatus for measuring radius of circular arc, the paper centering scale 1 be made up of transparent material, coordinatometer 2, rotation chi 3 and at least one slip chi 4 are formed; Paper centering scale 1 blade point midway is connected with the rotation chi 3 that can horizontally rotate around paper centering scale 1; Coordinatometer 2 is fixed on paper centering scale 1 upper end; Described slip chi 4 also can centrally chi 1 horizontal slip perpendicular to paper centering scale.Rotate chi 3 to be connected with paper centering scale 1 by pin 5, can rotate around paper centering scale 1 planar 360 degree.Described slip chi 4 is connected with paper centering scale by sliding component 6, can at paper centering scale 1 plane slide anteroposterior.Be printed on a center scale mark in the middle of described coordinatometer 2 lower end, coordinatometer 2 is fixed on paper centering scale 1 upper end, and the center scale mark of coordinatometer 2 overlaps with the zero graduation line of paper centering scale 1 middle position.Described paper centering scale 1 and coordinatometer 2 also independently can combine the tangent line chi being configured for determining circular arc tangential line.The scale mark of coordinatometer 2 is drawn as by transverse and longitudinal scale mark is orthogonal, the equal readable of transverse and longitudinal.
See Fig. 2, circular arc is got 1 N, central authorities zero groove of paper centering scale 1 is overlapped with N point.Under the prerequisite that central zero groove of N point and paper centering scale 1 overlaps, the position of adjustment arc measuring instrument, makes the intersection of coordinatometer and circular arc symmetrical relative to central authorities zero groove of paper centering scale 1, then can show that the straight line of paper centering scale 1 upper end is circular arc tangential line.Rotate and rotate chi 3, make rotation chi 3 and circular arc have an intersection point E, utilize rotation chi 3 to read NE length, NE is surveyed circular arc chord length.Slip slip chi 4, makes slip chi crossing with E point, reads EF numerical value.Substitute into formula R=NE2/2EF, required arc radius can be drawn.
Fig. 3 is the tangent line chi schematic diagram be made up of paper centering scale 1 and coordinatometer 2, can independently use.On the circular arc of tangent line to be asked, any place gets 1 M, and central authorities zero groove of paper centering scale 1 is overlapped with M point.Under the prerequisite that central zero groove of M point and paper centering scale 1 overlaps, the position of adjustment arc measuring instrument, makes coordinatometer 2 symmetrical relative to central authorities zero groove of paper centering scale 1 with the intersection of circular arc, then can show that the straight line of paper centering scale 1 upper end is the tangent line of circular arc.
Claims (7)
1. an apparatus for measuring radius of circular arc, is characterized in that: be made up of paper centering scale (1), coordinatometer (2), rotation chi (3), at least one slip chi (4); The rotation chi (3) that can horizontally rotate around paper centering scale (1) is connected with at described paper centering scale (1) blade point midway; Described coordinatometer (2) is fixed on paper centering scale (1) upper end; Described slip chi (4) also can centrally chi (1) horizontal slip perpendicular to paper centering scale.
2. apparatus for measuring radius of circular arc according to claim 1, is characterized in that: described rotation chi (3) is connected with paper centering scale (1) by pin (5), can rotate around paper centering scale (1) planar 360 degree.
3. apparatus for measuring radius of circular arc according to claim 1, is characterized in that: described slip chi (4) is connected with paper centering scale (1) by sliding component (6), can horizontally slip in paper centering scale (1) plane.
4. apparatus for measuring radius of circular arc according to claim 1, it is characterized in that: described coordinatometer (2) is fixed on paper centering scale (1) upper end, be printed on a center scale mark in the middle of coordinatometer (2) lower end, the center scale mark of coordinatometer (2) overlaps with the zero graduation line of paper centering scale (1) middle position.
5. according to claim 1 or apparatus for measuring radius of circular arc according to claim 4, it is characterized in that: the scale mark of described coordinatometer (2) is drawn as by transverse and longitudinal scale mark is orthogonal, the equal readable of transverse and longitudinal.
6. apparatus for measuring radius of circular arc according to claim 1, is characterized in that: described paper centering scale (1) and coordinatometer (2) independently can combine the tangent line chi being configured for determining circular arc tangential line.
7. apparatus for measuring radius of circular arc according to claim 1, is characterized in that: described paper centering scale (1), coordinatometer (2), rotation chi (3), slip chi (4) are all transparent materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520000712.3U CN204404971U (en) | 2015-01-04 | 2015-01-04 | A kind of arc measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520000712.3U CN204404971U (en) | 2015-01-04 | 2015-01-04 | A kind of arc measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204404971U true CN204404971U (en) | 2015-06-17 |
Family
ID=53428822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520000712.3U Expired - Fee Related CN204404971U (en) | 2015-01-04 | 2015-01-04 | A kind of arc measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204404971U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109839084A (en) * | 2019-01-25 | 2019-06-04 | 国家电网有限公司 | A kind of turning radius detection device of high voltage single-core cable, system and method |
-
2015
- 2015-01-04 CN CN201520000712.3U patent/CN204404971U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109839084A (en) * | 2019-01-25 | 2019-06-04 | 国家电网有限公司 | A kind of turning radius detection device of high voltage single-core cable, system and method |
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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: 20150617 Termination date: 20160104 |