CN201096490Y - Angle measuring tool - Google Patents
Angle measuring tool Download PDFInfo
- Publication number
- CN201096490Y CN201096490Y CNU2007200740209U CN200720074020U CN201096490Y CN 201096490 Y CN201096490 Y CN 201096490Y CN U2007200740209 U CNU2007200740209 U CN U2007200740209U CN 200720074020 U CN200720074020 U CN 200720074020U CN 201096490 Y CN201096490 Y CN 201096490Y
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- bar
- rod
- angle
- length
- protractor
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Abstract
The utility model relates to an angular measure tool. The angular measure tool comprises a telescopic rod and five fixed-length rods, both ends of each fixed-length rod are sequentially connected together moveably to form a pentagon, the five sides are sequentially a first rod, a second rod, a third rod, a fourth rod and a fifth rod, wherein, the first rod has the same length with the second rod, the length of the third rod is equal to that of the fifth rod, the telescopic rod is arranged between the center of the fourth rod and the first rod and the connecting end of the second rod, and the telescopic rod is vertical to the fourth rod. A protractor is disposed on the connecting end of the fifth rod or the third rod and the fourth rod, the center of the protractor and the fifth rod or the third rod coincide with the connecting end of the fourth rod, and the bottom side of the protractor coincides with the fifth rod or the third rod. The angular measure tool can change over the angle to be measured onto the tool for measuring and solve the angle measurement problem that the object having no intersection point and intersection angle or the intersection point is difficult to be measured, and has advantages of simple structure and convenient use.
Description
Technical field
The utility model relates to a kind of angulation instrument, relates in particular to a kind of angulation instrument that is used to measure the no intersection point angle of cut or is difficult for the angle of cut of measurement at the intersection point place.
Background technology
Protractor is comparatively general a kind of angulation instrument, and it is that two straight lines that have intersection point are carried out the measurement of angle, is mainly used on plane or the paper.The measuring method of general quantity hornwork, one side be by making coinciding of its base and measured angle, the mid point of protractor overlaps with the intersection point of measured angle, thereby utilizes another limit of measured angle to finish reading of scale.
This kind measuring method has determined that in itself this protractor can only measure the measured angular that has intersection point, and because the restriction of measured angle intersection point makes it be subjected to bigger restriction on measurement size.In case it is relatively large to run into the two straight line angles of cut or the testee size that will measure no intersection point, and measuring condition complexity, when being not easy to directly measure at the intersection point place, just can't measure for general protractor, just can only obtain the angle that to measure by indirect calculation, under some occasion, will there be inefficiency, calculates inaccurate problem.
The utility model content
The purpose of this utility model is to provide a kind of angulation instrument, and the angular transition that this instrument can will be measured is measured to this instrument, solves the measurement of angle problem that the no intersection point angle of cut or intersection point place are difficult for measurement, and it is simple in structure, and is easy to use.
The utility model is achieved in that
A kind of angulation instrument, it is characterized in that: described angulation instrument comprises expansion link and five connecting-rods with constant lenghs, two ends at each connecting-rods with constant lengh, be movably connected to form pentagon successively, article five, the limit is followed successively by first bar, second bar, the 3rd bar, the 4th bar and the 5th bar, wherein, the equal in length of first bar and second bar, the equal in length of the 3rd bar and the 5th bar, between the link of the mid point of the 4th bar and first bar and second bar, expansion link is housed, expansion link is vertical with the 4th bar, equipped amount hornwork on pentagonal arbitrary end points.
Described link place equipped amount hornwork at the 5th bar or the 3rd bar and the 4th bar, the mid point of protractor and the 5th bar or the 3rd bar overlap with the link of the 4th bar, and the base of protractor overlaps with the 5th bar or the 3rd bar.
Described at the two ends of connecting-rods with constant lengh, by hinged five connecting-rods with constant lenghs are connected in turn, form pentagon.
The utility model is a kind of improvement to existing angulation instrument, has solved the measurement of angle problem that the no intersection point angle of cut or intersection point place are difficult for the angle of cut of measurement.The utility model angulation instrument is special pentagonal configuration, by the equivalent substitution of angle in this angulation instrument, by one can be easily and the angle value that accurately measures, through conversion, obtain the angle value of the tested angle of cut.Simultaneously, can adjust the length of each connecting-rods with constant lengh, determine different range abilities, to satisfy different measurement requirement.The utility model is simple in structure, and is easy to use.
Description of drawings
Fig. 1 is the utility model angulation tool construction synoptic diagram.
Among the figure: 1 first bar, 2 second bars, 3 the 3rd bars, 4 the 4th bars, 5 the 5th bars, 6 expansion links, 7 protractors, 8 connecting-rods with constant lenghs, A are the angle of the 4th bar and the 5th bar, B is the angle of the 4th bar and the 5th bar extended line, C is the angle of the 5th bar extended line and expansion link extended line, and D is the angle of first bar and expansion link, and OP is two end points of first bar, PQ is two end points of second bar, QR is two end points of the 3rd bar, and RS is two end points of the 4th bar, and SO is two end points of the 5th bar, PT is two end points of expansion link, and U is the 3rd bar, the intersection point of the 5th bar and expansion link extended line.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1, a kind of angulation instrument comprises expansion link 6 and five connecting-rods with constant lenghs 8, at the two ends of connecting-rods with constant lengh 8, by hinged five connecting-rods with constant lenghs 8 is connected in turn, and forms pentagon.Article five, the limit is followed successively by first bar 1, second bar 2, the 3rd bar 3, the 4th bar 4 and the 5th bar 5, wherein, and the equal in length of first bar 1 and second bar 2, the equal in length of the 3rd bar 3 and the 5th bar 5.Between the link of the mid point of the 4th bar 4 and first bar 1 and second bar 2 expansion link 6 is housed, expansion link 6 is vertical with the 4th bar 4 all the time, and expansion link 6 length retractables.Under the drive of expansion link 6, pentagonal four edges, promptly first bar 1, second bar 2, the 3rd bar 3 and the 5th bar 5 positions can freely change.
On pentagonal arbitrary end points, protractor can be installed.In the present embodiment, as a kind of optimal way, at the link place equipped amount hornwork 7 of the 5th bar 5 and the 4th bar 4.The mid point of protractor 7 and the 5th bar 5 overlap with the link of the 4th bar 4, and the base of protractor 7 overlaps with the 5th bar 5.Same mounting means, protractor 7 also can be installed in the link place of the 3rd bar 3 and the 4th bar 4.
The principle of work of the utility model angulation instrument is such:
The utility model angulation instrument is a special pentagonal configuration, because first bar 1 is identical with second bar, 2 length, the 3rd bar 3 is also identical with the 5th bar 5 length, expansion link 6 is connected with first bar 1 mid point of the 4th bar 4 with the link of second bar 2, and expansion link 6 is again all the time perpendicular to the 4th bar 4, therefore, can obtain the relation of equal quantity between each limit and each angle in this angulation instrument pentagon by equivalent substitution.
In the time will measuring measured angular with this angulation instrument, change the length of expansion link 6, thereby drive the position of first bar 1, second bar 2, the 3rd bar 3 and the 5th bar 5, the 3rd bar 3 and the 5th bar 5 are abutted against on the both sides of measured angle, therefore, the angle value of the 3rd bar 3, the 5th bar 5 extended line angles of cut is the angle value of measured angle.
The angle of the 4th bar 4 and the 5th bar 5 is A, and the angle of the 4th bar 4 and the 5th bar 5 extended lines is B, and the included angle B complementation of the included angle A of the 4th bar 4 and the 5th bar 5 and the 4th bar 4 and the 5th bar 5 extended lines, promptly obtains equation one: A+B=180 °.
Because expansion link 6 one ends are connected with the 4th bar 4 mid points, the other end is connected with the link place of first bar 1 with second bar 2, and expansion link 6 is all the time perpendicular to the 4th bar 4, therefore the extended line of the extended line of expansion link 6 and the 3rd bar 3, the 5th bar 5 meets on the same point, and the angle of the extended line of expansion link 6, the 5th bar 5 is C.The angle C of the included angle B of the 4th bar 4 and the 5th bar 5 extended lines and the 5th bar 5, expansion link 6 extended lines is surplus mutually, and promptly equation two: B+C=90 °.
According to equation one and equation two: C=A-90 °, promptly the angle C value of the 5th bar 5, expansion link 6 extended lines is that the included angle A value of the 4th bar 4 and the 5th bar 5 deducts 90 °.Same reason, the angle value of the 3rd bar 3, expansion link 6 extended lines are that the angle value of the 4th bar 4 and the 3rd bar 3 deducts 90 °.
Because this angulation instrument is a special pentagonal configuration, the 4th bar 4 equates with the 4th bar 4 included angle A angle values with the 3rd bar 3 angle angle values and the 5th bar 5.Therefore, the angle value of the 3rd bar 3, the 5th bar 5 extended line angles of cut is two times a C value, and promptly the angle value of measured angle is (A-90 °) * 2.
In the present embodiment, protractor 7 is installed in the 5th bar 5 and the 4th bar 4 link places, can measure the angle value of the 4th bar 4 and the 5th bar 5 included angle A accurately, easily, extrapolates the angle angle value that will measure by the angle value of this included angle A.Same reason, protractor 7 also can be installed in the 3rd bar 3 and the 4th bar 4 link places, extrapolate the angle angle value that will measure by the angle value of measuring the 4th bar 4 and the 3rd bar 3 angles.
The utility model angulation instrument is special pentagonal configuration, exists relation of equal quantity between each limit and each angle.Therefore, draw equation: SO*sinC+RS/2=OP*sinD.Wherein, the maximal value of the scope of range is the maximum value of angle C.Convert by differentiate, draw: the maximum value of angle C is 2arcsin[(2OP-RS)/2SO], promptly the range ability of angle C is 0～2arcsin[(2OP-RS)/2SO].
There is diversity owing to take measurement of an angle,, can the maximum value of angle C be changed, thereby the range ability of this angulation instrument is regulated, reach best measurement effect by changing the relative length of OP, RS, SO in order to satisfy different measurement requirement.
Embodiment:
Use the utility model angulation instrument that the sheet material opening angle of sheet material electric resistance welding is measured.According to the size of wanting the measuring position, in advance the length on each bar limit of angulation instrument is selected to determine, as: the 4th bar 4 length are 100mm; The length of the 3rd bar 3 and the 5th bar 5 is 50mm; The length of first bar 1 and second bar 2 is 75mm.
Regulate the length of expansion link 6, fitted in the 3rd bar 3 and the 5th bar 5 and the side of tested lath, measure, read the angle numerical value of angle A by the protractor 7 diagonal angle A that are installed in the 4th bar 4 and the 5th bar 5 link places.Pass through formula: 2C=(A-90 °) * 2 obtains the angle value of sheet material angular aperture 2C.Carried out ten times altogether and measured, the concrete angle value of sheet material angular aperture is as shown in table 1:
Table 1
| ?5.9 | ?6.1 | ?5.9 | ?5.9 | ?6.0 |
| ?5.7 | ?5.9 | ?5.9 | ?6.0 | ?5.8 |
Its mean value is 5.91 °.
The angular transition that the utility model angulation instrument can will be measured is measured to this instrument, solves the measurement of angle problem that the no intersection point angle of cut or intersection point place are difficult for measurement, can take measurement of an angle fast and accurately, increases work efficiency, and it is simple in structure, and is easy to use.
Claims (3)
1. angulation instrument, it is characterized in that: described angulation instrument comprises expansion link and five connecting-rods with constant lenghs, two ends at each connecting-rods with constant lengh, be movably connected to form pentagon successively, article five, the limit is followed successively by first bar, second bar, the 3rd bar, the 4th bar and the 5th bar, wherein, the equal in length of first bar and second bar, the equal in length of the 3rd bar and the 5th bar, between the link of the mid point of the 4th bar and first bar and second bar, expansion link is housed, expansion link is vertical with the 4th bar, equipped amount hornwork on pentagonal arbitrary end points.
2. angulation instrument according to claim 1, it is characterized in that: at the link place equipped amount hornwork of the 5th bar or the 3rd bar and the 4th bar, the mid point of protractor and the 5th bar or the 3rd bar overlap with the link of the 4th bar, and the base of protractor overlaps with the 5th bar or the 3rd bar.
3. angulation instrument according to claim 1 is characterized in that: at the two ends of connecting-rods with constant lengh, by hinged five connecting-rods with constant lenghs are connected in turn, form pentagon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200740209U CN201096490Y (en) | 2007-08-23 | 2007-08-23 | Angle measuring tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200740209U CN201096490Y (en) | 2007-08-23 | 2007-08-23 | Angle measuring tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201096490Y true CN201096490Y (en) | 2008-08-06 |
Family
ID=39923543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200740209U Expired - Fee Related CN201096490Y (en) | 2007-08-23 | 2007-08-23 | Angle measuring tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201096490Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104385194A (en) * | 2014-12-03 | 2015-03-04 | 中船黄埔文冲船舶有限公司 | Adjustable angle processing, assembling and measuring device |
| CN104833292A (en) * | 2014-12-19 | 2015-08-12 | 北汽福田汽车股份有限公司 | Arc-shaped member inclination angle detection method and device |
-
2007
- 2007-08-23 CN CNU2007200740209U patent/CN201096490Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104385194A (en) * | 2014-12-03 | 2015-03-04 | 中船黄埔文冲船舶有限公司 | Adjustable angle processing, assembling and measuring device |
| CN104833292A (en) * | 2014-12-19 | 2015-08-12 | 北汽福田汽车股份有限公司 | Arc-shaped member inclination angle detection method and device |
| CN104833292B (en) * | 2014-12-19 | 2017-09-29 | 北汽福田汽车股份有限公司 | The inclination angle detection method of arcuate member, device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080806 Termination date: 20130823 |