CN106813563B - Angle measuring device - Google Patents
Angle measuring device Download PDFInfo
- Publication number
- CN106813563B CN106813563B CN201710236743.2A CN201710236743A CN106813563B CN 106813563 B CN106813563 B CN 106813563B CN 201710236743 A CN201710236743 A CN 201710236743A CN 106813563 B CN106813563 B CN 106813563B
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- Prior art keywords
- measuring
- vernier
- angle
- rod
- main
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The invention relates to the field of measuring tools, in particular to an angle measuring device. The angle measuring device comprises a main dial provided with a main angle square and a vernier fixing frame which is matched with the main dial in a rotating mode around the center of the main dial, wherein the vernier angle square corresponding to the main angle square is arranged on the vernier fixing frame, the vernier angle square is provided with zero scales which are aligned with the main angle square scales at an initial position, a measuring datum is arranged on the angle measuring device and comprises a measuring datum line which extends along the radial direction of the main dial and a measuring datum point which is located at the center of the main dial, and the problem that the measuring precision of the existing protractor is low is solved by measuring the angle through the vernier.
Description
Technical Field
The invention relates to the field of measuring tools, in particular to an angle measuring device.
Background
Surveying and mapping tools commonly used in the case of measuring scales and protractors are often used in the case of drawing polygons or measuring angles. The measurement accuracy of the ordinary protractor is low, and in the process of accurately measuring the angle, the angle is generally required to be measured for many times and then an average value is obtained, and the problem of low measurement efficiency is caused by the fact that the ordinary protractor is required to be used for many times. In addition, because the meter ruler and the protractor are two independent tools, the meter ruler and the protractor are generally required to be configured at the same time to complete the surveying and mapping work, and the surveying and mapping efficiency is influenced.
Disclosure of Invention
The invention aims to provide an angle measuring device to solve the problem of low measuring accuracy of the existing protractor.
In order to achieve the above purpose, the technical scheme of the angle measuring device of the invention is as follows: the angle measuring device comprises a main dial provided with a main angle square and a vernier fixing frame which is matched with the main dial in a rotating mode around the center of the main dial, wherein the vernier angle square corresponding to the main angle square is arranged on the vernier fixing frame, the vernier angle square is provided with zero scales which are aligned with the main angle square scales at an initial position, a measuring datum is arranged on the angle measuring device, and the measuring datum comprises a measuring datum line which extends along the radial direction of the main dial and a measuring datum point which is located at the center of the main dial.
The vernier angle square is provided with at least two vernier angle squares, the at least two vernier angle squares are arranged oppositely along the radial direction of the main scale, and the angular distance of the two vernier angle squares with the same scale value is 180 degrees.
The vernier fixing frame is a vernier disc, the vernier angle square is arranged on the vernier disc, and the main scale disc is sleeved on the vernier disc.
The main scale plate is sleeved on the periphery of the vernier fixing frame, a measuring reference rod extending along the radial direction of the main scale plate is arranged on the main scale plate, and the measuring reference rod extends to the measuring reference rod.
And a measuring rod linear graduated scale is arranged on the measuring reference rod.
The measuring reference rod is provided with a rod measuring through groove, the rod measuring through groove extends along the radial direction of the main scale plate, the measuring rod linear scales are provided with two measuring rod linear scales which are respectively positioned at two sides of the rod measuring through groove, the two measuring rod linear scales are arranged along the direction perpendicular to the extending direction of the measuring reference rod, the part of the measuring reference rod extending to the measuring reference rod is a reference line reference rod part, and the two measuring rod linear scales form the reference line reference rod part.
The vernier fixing frame is a vernier disc, the vernier angle ruler is arranged on the vernier disc, a vernier measurement through groove which can be communicated with the rod measurement through groove is formed in the vernier disc, vernier linear scales which correspond to the measuring rod linear scales are arranged on two sides of the vernier measurement through groove, and after the vernier measurement through groove is aligned with the rod measurement through groove, the two measuring rod linear scales are aligned with the corresponding vernier linear scales to form a combined linear scale.
And the zero scale line of the vernier linear scale is superposed with the center of the vernier disk.
The invention has the beneficial effects that: the angle measuring device comprises a main dial provided with a main angle square and a vernier fixing frame which is matched with the main dial in a rotating way around the center of the main dial, wherein the vernier angle square is arranged on the vernier fixing frame, when the angle measuring device is used, a measuring reference point of a measuring reference is aligned with the top point of an angle to be measured, a measuring reference line of the measuring reference and an angle edge of the measuring angle are positioned, an angle coordinate value of the angle edge is read out through the main angle square and the vernier angle square, then the measuring reference line and the other angle edge of the angle to be measured are positioned, an angle coordinate value of the angle edge is read out simultaneously, one of the vernier angle square and the main angle square is ensured to be motionless in the measuring process, the size of the angle coordinate is calculated according to the angle coordinate values of the two angle edges of the angle to be measured, the angle is measured.
Furthermore, the two vernier angle rulers are arranged oppositely along the radial direction of the main scale, the angle distance of the two vernier angle rulers with the same scale value is 180 degrees, when the angle measuring device is used, two groups of data can be obtained through the two vernier angle rulers, then the average value of the two groups of data is obtained, the angle measuring device can obtain the two groups of data through one-time measurement, and the measuring efficiency is improved.
Drawings
FIG. 1 is a schematic structural view of an embodiment of the angle measuring apparatus of the present invention;
FIG. 2 is a schematic structural diagram of the cursor disc of FIG. 1;
FIG. 3 is a schematic structural view of the main dial of FIG. 1;
FIG. 4 is a schematic view of the angle measuring device of the present invention when measuring length;
FIG. 5 is a schematic view of an angle to be measured in an embodiment of the angle measuring apparatus of the present invention.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1 to 3, the angle measuring device of the present invention includes a main scale 1 and a vernier disk 2, the main scale 1 and the vernier disk 2 are concentrically arranged, a main angle square 11 is disposed on the main scale 1, and two vernier angle squares 21 corresponding to the main angle square 11 are disposed on the vernier disk 2, in this embodiment, the main angle square 11 is circular, and the vernier angle squares 21 are arc-shaped. The two vernier angle rulers 21 respectively form reading windows with the main angle ruler 11, and the vernier disks form a vernier fixing frame of the angle measuring device. The angle measuring device is provided with a measuring reference, the measuring reference comprises a measuring reference point positioned at the center of the main dial and a measuring reference line extending along the radial direction of the main dial, and the measuring reference point is positioned at the center of the main dial. The accuracy of measurement is improved by providing the vernier disk 12.
In this embodiment, the main scale 1 is sleeved on the periphery of the vernier disk 2, and the vernier angle 21 of the vernier disk 2 is arranged on the outer edge of the vernier disk 2. The main dial 1 is provided with a vernier disk mounting hole 12, and the vernier disk 2 is rotatably assembled in the vernier disk mounting hole 12 around the center of the main dial. The main angle square 11 is arranged at the outer edge of one end opening of the vernier disk mounting hole 12. The angle value range of the main angle square 11 is 0-360 degrees, and the minimum scale is 0.5 degrees (30'). The zero degree scale line and the 180 degree scale line are collinear and pass through the center of the main scale 1.
The vernier angle has a zero scale which is aligned with the main angle scale in the initial position. In this embodiment, the two vernier angular rulers 21 are arranged opposite to each other in the radial direction of the vernier disk 2, and when the zero scale line of the scale of one vernier disk 2 is aligned with the zero scale line of the main angular ruler 11, the zero scale line of the other vernier angular ruler 21 is aligned with the 180 ° scale line of the main scale disk 1. The angular distance of the two vernier angle squares 21 with the same scale value is 180 degrees, and the division value of the vernier angle square 21 is 1 ', namely, the angle formed by the 30 cells of the vernier angle square 21 to the center of the disc is equal to the angle formed by the 29 cells of the main angle square 11 to the center of the disc (namely, the difference between the two angles is 1'). The zero degree scales of the two vernier angle rulers 21 are collinear and pass through the circle center of the vernier dial 2.
The main dial 1 is provided with a measuring reference rod 13 extending along the radial direction of the main dial 1, in the embodiment, the measuring reference rod 13 is provided with a first measuring rod linear scale 131 and a second measuring rod linear scale 132, the measuring reference rod 13 is further provided with a rod measuring through groove 133 extending along the extending direction of the measuring reference rod 13, the first and second measuring rod linear scales are arranged on two sides of the rod measuring through groove 133, and the rod measuring through groove 133 is rectangular. In this embodiment, the measurement reference line extends to the measurement reference rod, a portion of the measurement reference line extending to the measurement reference rod is a reference line reference rod portion, and the two measurement rod linear scales constitute the reference line reference rod portion.
The vernier measurement through groove 22 extending along the radial direction of the vernier disc 2 is formed in the vernier disc 2, the vernier measurement through groove 22 is also rectangular and has the same width as the rod measurement through groove 133, a first vernier linear scale 231 and a second vernier linear scale 232 corresponding to the first measuring rod linear scale and the second measuring rod linear scale are arranged on two sides of the vernier measurement through groove 22, the first vernier linear scale and the second vernier linear scale both extend along the radial direction of the vernier disc 2, wherein the first vernier linear scale 231 is collinear with zero scales of the two vernier angle rulers 21, zero scale lines of the first vernier linear scale and the second vernier linear scale are superposed with the center of the vernier disc 2, and scale lines of the first vernier linear scale and the second vernier linear scale are parallel to each other.
The vernier measurement through groove 22 corresponds to the rod measurement through groove 133, the vernier measurement through groove 22 and the rod measurement through groove 133 are communicated and combined to form a combined measurement through groove at a set position, the first and second vernier linear scales on two sides of the combined rod measurement through groove 133 are respectively combined with the first and second vernier linear scales on two sides of the vernier measurement through groove 22, the combined first measurement rod linear scale 131 and the corresponding first vernier linear scale 231 form a first combined linear scale, the combined second measurement rod linear scale 132 and the corresponding second vernier linear scale 232 form a second combined linear scale, and the first and second combined linear scales can be used for measuring the length of a straight line. In other embodiments, the vernier angle 21 may be omitted, and the length of the measuring line is measured only by the measuring rod linear scale.
In this embodiment, the first and second combined linear scales form a measurement reference line on the angle measuring device, and when the angle measuring device is used, the angle edge to be measured is located at the middle position between the first and second combined linear scales and is parallel to the two combined linear scales.
The first and second combined linear scales of the angle measuring device of the present invention are disposed at both sides of the cursor measuring through groove 22 and the rod measuring through groove 133, when in use, the straight line to be measured is positioned in the combined measuring through groove, and the straight line is measured by the first and second combined linear scales at both sides of the combined measuring through groove. The specific measurement steps are as follows: as shown in figure 4 of the drawings,
(1) firstly, the measuring reference rod 13 is rotated, so that the vernier measuring through groove 22 on the vernier dial 2 and the measuring reference rod 13 is communicated with the rod measuring through groove 133 to form a first combined linear scale and a second combined linear scale, as shown in fig. 4;
(2) when the length of the straight line is measured, the straight line is placed at a certain position in the combined measuring through groove;
(3) measuring the length L1 of the straight line by using a first combined straight line scale;
(4) measuring the length L2 of the straight line by using a second combined straight line scale;
(5) the length L = (L1+ L2)/2 of the straight line.
In addition, by providing the vernier measurement through groove 22 corresponding to the rod measurement through groove 133 on the vernier dial 2 and providing the first and second vernier linear scales corresponding to the first and second measurement rod linear scales, a combined measurement through groove and the first and second combined linear scales are formed, and the length of the measurement reference rod 13 is reduced without reducing the measurement range.
Since the angle measuring apparatus of the present embodiment is provided with only one measuring reference rod 13 and no corresponding fixed measuring rod, it is necessary to establish angular coordinates on both sides of the angle to be measured and then determine the size of the angle using the angular coordinates on both sides when measuring the angle.
Taking the angle a shown in fig. 5 as an example to explain the specific measurement process, first, the angular coordinate α of the angular edge a and the angular coordinate β of the angular edge b of the angle a are measured by using the vernier dial 2 and the main dial 1, respectively, and the size of the angle a is | α - β |.
The specific operation steps comprise (1) measuring angular coordinates α and β, namely firstly coinciding a measuring reference point of an angle measuring device with the vertex of an angle A, rotating a measuring reference rod 13 to enable an angle edge a to be positioned between a first measuring rod linear scale and a second measuring rod linear scale and to be parallel to the first measuring rod linear scale and the second measuring rod linear scale, obtaining two angular coordinates α 1 and α 2 according to the reading of two vernier angle rulers 21 and a main angle ruler, obtaining two angular coordinates β 1 and β 2 of an angle edge b through measurement in the same way, and (2) calculating the size of the angle A, wherein A is = (| α 1- β 1| + | α 2- β 2 |)/2.
The angle measuring device integrates the functions of a ruler and a protractor and has higher precision. When the straight line length is measured, two rulers are used for measuring at the same time, and the average value of the two measured lengths is used as the straight line length, so that the measuring precision is high. When the angle is measured, two angle meters are used for measuring the angle at the same time, the two obtained angles are averaged to be used as a final angle value, the angle measurement precision is improved, and meanwhile, the eccentric difference can be eliminated by the two vernier disks.
In other embodiments, the number of the vernier angle squares on the vernier disc can be at least three; the vernier scale can be of a sleeve body structure, the main dial is of a cylindrical structure at the moment, the vernier scale is sleeved on the periphery of the main dial, and the positions of a vernier angle square on the vernier scale and a main angle square on the main dial are correspondingly adjusted; the measuring reference rod on the main dial plate can be not provided with a linear graduated scale, the angle measuring device is only used for measuring angles at the moment, and the reference rod part can be the edge line of the measuring reference rod at the moment; the measuring reference can also be a line engraved on the main scale; the measuring rod linear graduated scale on the measuring reference rod can be only provided with one measuring rod linear graduated scale, a rod measuring through groove does not need to be arranged at the moment, the measuring rod linear graduated scale is arranged at the edge of the measuring reference rod, and the measuring rod linear graduated scale forms a reference rod part.
In other embodiments, the angle measuring device can be used as a ruler and a protractor, and can also be used as a fixed point tool in a polar coordinate system to give a polar coordinate of a certain point; the vernier dial can be a fixed frame which is matched with the main scale disc in a rotating way, and other types of vernier fixed frames are arranged on the fixed frame.
Claims (4)
1. Angle measuring device, its characterized in that: the angle measuring device comprises a main dial provided with a main angle square and a vernier fixing frame which is matched with the main dial in a rotating mode around the center of the main dial, wherein the vernier fixing frame is provided with a vernier angle square corresponding to the main angle square, the vernier angle square is provided with zero scales which are aligned with the main angle square scales at an initial position, the angle measuring device is provided with a measuring datum, and the measuring datum comprises a measuring datum line which extends along the radial direction of the main dial and a measuring datum point which is located at the center of the main dial; the main scale plate is sleeved on the periphery of the vernier fixing frame, a measuring reference rod extending along the radial direction of the main scale plate is arranged on the main scale plate, and the measuring reference rod extends to the measuring reference rod; a measuring rod linear graduated scale is arranged on the measuring reference rod; the measuring reference rod is provided with a rod measuring through groove, the rod measuring through groove extends along the radial direction of the main scale disc, the measuring rod linear scales are provided with two measuring rod linear scales which are respectively positioned at two sides of the rod measuring through groove, the two measuring rod linear scales are arranged along the direction vertical to the extending direction of the measuring reference rod, the part of the measuring reference rod extending to the measuring reference rod is a reference line reference rod part, and the two measuring rod linear scales form the reference line reference rod part; the vernier fixing frame is a vernier disc, the vernier angle ruler is arranged on the vernier disc, a vernier measurement through groove which can be communicated with the rod measurement through groove is formed in the vernier disc, vernier linear scales which correspond to the measuring rod linear scales are arranged on two sides of the vernier measurement through groove, and after the vernier measurement through groove is aligned with the rod measurement through groove, the two measuring rod linear scales are aligned with the corresponding vernier linear scales to form a combined linear scale.
2. The angle measuring apparatus according to claim 1, wherein: the vernier angle square is provided with at least two vernier angle squares, the at least two vernier angle squares are arranged oppositely along the radial direction of the main scale, and the angular distance of the two vernier angle squares with the same scale value is 180 degrees.
3. The angle measuring apparatus according to claim 1 or 2, characterized in that: the vernier angle square is arranged on the vernier disc.
4. The angle measuring apparatus according to claim 1, wherein: and the zero scale line of the vernier linear scale is superposed with the center of the vernier disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710236743.2A CN106813563B (en) | 2017-04-12 | 2017-04-12 | Angle measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710236743.2A CN106813563B (en) | 2017-04-12 | 2017-04-12 | Angle measuring device |
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| Publication Number | Publication Date |
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| CN106813563A CN106813563A (en) | 2017-06-09 |
| CN106813563B true CN106813563B (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710236743.2A Expired - Fee Related CN106813563B (en) | 2017-04-12 | 2017-04-12 | Angle measuring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108709475B (en) * | 2018-07-26 | 2020-06-19 | 广西玉柴机器股份有限公司 | Utensil is examined in oblique oilhole angle detection special use of cylinder block |
| CN112432574A (en) * | 2020-11-30 | 2021-03-02 | 中冶宝钢技术服务有限公司 | Bolt positioner with adjustable |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1773903A1 (en) * | 1967-08-09 | 1971-08-26 | Marcel Wahli | Angle measuring device |
| CN88210585U (en) * | 1988-05-26 | 1988-12-21 | 沈阳第二量具刃具厂 | Multipurpose angle square for layout liner |
| CN1065243A (en) * | 1991-03-26 | 1992-10-14 | 张宜军 | Square and circle plotter |
| CN2194822Y (en) * | 1994-03-05 | 1995-04-19 | 刘俊宇 | Vernier protractor ruler |
| CN2310979Y (en) * | 1997-08-08 | 1999-03-17 | 上海宝钢设备检测公司 | Universal angle measuere |
| CN202002600U (en) * | 2011-02-23 | 2011-10-05 | 葛洲坝集团试验检测有限公司 | Inspection protractor |
| CN203511074U (en) * | 2013-10-23 | 2014-04-02 | 张钦辉 | Compasses for mathematics teaching |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106097879B (en) * | 2016-08-18 | 2018-10-02 | 浙江大学城市学院 | A kind of high-precision double wheel axle double vernier earth's axis precession experiment instrument of conduction brush transmission wire type |
-
2017
- 2017-04-12 CN CN201710236743.2A patent/CN106813563B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1773903A1 (en) * | 1967-08-09 | 1971-08-26 | Marcel Wahli | Angle measuring device |
| CN88210585U (en) * | 1988-05-26 | 1988-12-21 | 沈阳第二量具刃具厂 | Multipurpose angle square for layout liner |
| CN1065243A (en) * | 1991-03-26 | 1992-10-14 | 张宜军 | Square and circle plotter |
| CN2194822Y (en) * | 1994-03-05 | 1995-04-19 | 刘俊宇 | Vernier protractor ruler |
| CN2310979Y (en) * | 1997-08-08 | 1999-03-17 | 上海宝钢设备检测公司 | Universal angle measuere |
| CN202002600U (en) * | 2011-02-23 | 2011-10-05 | 葛洲坝集团试验检测有限公司 | Inspection protractor |
| CN203511074U (en) * | 2013-10-23 | 2014-04-02 | 张钦辉 | Compasses for mathematics teaching |
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| CN106813563A (en) | 2017-06-09 |
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