CN204705283U - Hold portable High-precision angle measuring instrument - Google Patents
Hold portable High-precision angle measuring instrument Download PDFInfo
- Publication number
- CN204705283U CN204705283U CN201520349980.6U CN201520349980U CN204705283U CN 204705283 U CN204705283 U CN 204705283U CN 201520349980 U CN201520349980 U CN 201520349980U CN 204705283 U CN204705283 U CN 204705283U
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- China
- Prior art keywords
- main scale
- micro
- chi
- shaft collar
- side rod
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- Expired - Fee Related
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- Length-Measuring Instruments Using Mechanical Means (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
Hold portable High-precision angle measuring instrument, belong to teaching and experiment equipment technical field.It comprises main scale, main scale comprises main scale shaft collar and is arranged on the main ruler disk of main scale shaft collar outer ring, main scale shaft collar circle centre position is fixedly installed rotating shaft, rotating shaft is rotated arrange and measure initial line bar and measure whole side rod, measure initial line bar and form main scale handle to extending away from direction, the main scale shaft collar center of circle, measure whole side rod and form micro-chi handle to extending away from direction, the main scale shaft collar center of circle, measure one end that whole side rod is connected with rotating shaft and be fixedly installed micro-chi fixed mount, micro-chi fixed mount is fixedly installed the micro-chi dish of the arc corresponding with main ruler disk.This holds portable High-precision angle measuring instrument clear principle, structure is simple, easy-to-use, and precision is high, cheap, is easy to carry.
Description
Technical field
The utility model belongs to teaching and experiment equipment technical field, is specifically related to hold portable High-precision angle measuring instrument.
Background technology
Protractor is a kind of angle measuring instrument the most common, what university students and middle school students's learning mathematics was used is the most general angle measuring instrument, and be only limitted to the measurement to plane upper angle, radius is little in addition, do not have vernier scale as auxiliary pin-point reading device, precision is not high, error is large.Existing scientific research, engineering construction, field are detected, and are summed up nothing more than two classes: electronic type and mechanical type, mostly generally are constant inclined surface slope measuring, leveling quasi-instrument.Along with the special requirement of economic construction and scientific research etc., their measuring accuracy does not also reach actual needs; Based on this, applicant applies for the utility model patent of " accurate leveling angular instrument " on April 23rd, 2012, and this patent No. is ZL 201220173234.2; Economic benefit aspect based on product is considered, applicant has carried out necessary transformation to it again, and again in application on 01 09th, 2013 to " simple and easy accurate leveling angular instrument " utility model patent, this patent No. is ZL 201320010058.5.But these designs are all suitable for leveling and the measurement of angle of constant tilt face, and for moveable workpiece about the measurement effect of angle aspect is not good.
Based on the consideration to fixation workpiece measurement of angle, applicant creates the idea of design hand held high-acruracy survey angle.Applicant finds that when market study existing Handheld-type angular instrument structure comparison is simple and crude, does not adopt high precision vernier, is workpiece to be sandwiched in reading end to measure during use, reading accuracy is not high, error is large, also very unreasonable in structure, and mostly is small angle measurement.
Utility model content
For prior art Problems existing, the purpose of this utility model is to design provides a kind of technical scheme holding portable High-precision angle measuring instrument.
Described holds portable High-precision angle measuring instrument, comprise main scale, described main scale comprises main scale shaft collar and is arranged on the main ruler disk of main scale shaft collar outer ring, it is characterized in that described main scale shaft collar circle centre position is fixedly installed rotating shaft, described rotating shaft is rotated arrange and measure initial line bar and measure whole side rod, described measurement initial line bar forms main scale handle to extending away from direction, the main scale shaft collar center of circle, the whole side rod of described measurement forms micro-chi handle to extending away from direction, the main scale shaft collar center of circle, one end that the whole side rod of described measurement is connected with rotating shaft is fixedly installed micro-chi fixed mount, described micro-chi fixed mount is fixedly installed the micro-chi dish of the arc corresponding with main ruler disk.
Described holds portable High-precision angle measuring instrument, it is characterized in that described measurement initial line bar is positioned at below main scale shaft collar, the groove passed for main scale is provided with in the whole side rod of described measurement, the whole side rod bottom surface of described measurement flushes with measurement initial line bar bottom surface, and described micro-chi fixed mount is positioned at above main scale shaft collar.
Described holds portable High-precision angle measuring instrument, it is characterized in that described micro-chi dish is the micro-chi of 60 calibration.
Above-mentioned holds portable High-precision angle measuring instrument, structure is simple, reasonable in design, compared with prior art has following beneficial effect: (1) have employed one end that measured workpiece has been clipped in fulcrum and has held, become vertical angle relation with reading end, read-around ratio is more convenient; (2) zeroing function before measuring, avoids the appearance of systematic error; (3) adopt 30cm main scale, after amplifying, the precision of reading can be higher; (4) measurable angle range be 0 ° ~ (360 ° of-aresinr/l), make it the workpiece that angle is greater than 180 ° and also can measure; (5) precision of vernier scale reaches 0.5 ' (30 "); Integrate, this measuring instrument clear principle, structure are simple, easy-to-use, and precision is high, cheap, is easy to carry, and have employed the direct measurement means of hand held.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation measured initial line bar in the utility model and measure whole side rod;
Fig. 3 is the structural representation measuring whole side rod and micro-chi dish in the utility model;
Fig. 4 is the utility model angle measurement limiting principle figure;
Fig. 5 is the utility model precision schematic diagram;
Fig. 6 is the utility model angle measurement schematic diagram;
Fig. 7 is the utility model angle measurement reading schematic diagram.
In figure: the micro-chi handle of 1-; 2-main scale handle; 3-rotating shaft; The micro-chi fixed mount of 4-; The micro-chi dish of 5-; 6-main scale shaft collar; 7-main ruler disk; 8-measures initial line bar; 901-groove; 9-measures whole side rod; 10-determinand.
Embodiment
The utility model is further illustrated below in conjunction with Figure of description.
As shown in Figure 1,2 and 3, hold portable High-precision angle measuring instrument and comprise main scale, this main scale comprises main scale shaft collar 6 and is arranged on the main ruler disk 7 of main scale shaft collar 6 outer ring, and main ruler disk 7 is marked with main scale scale.Main scale shaft collar 6 circle centre position is fixedly installed rotating shaft 3, rotating shaft 3 is rotated arrange and measures initial line bar 8 and measure whole side rod 9.Measure initial line bar 8 and form main scale handle 2 to extending away from direction, main scale shaft collar 6 center of circle.Measure whole side rod 9 and form micro-chi handle 1 to extending away from direction, main scale shaft collar 6 center of circle, measure one end that whole side rod 9 is connected with rotating shaft 3 and be fixedly installed micro-chi fixed mount 4.Micro-chi fixed mount 4 is fixedly installed the micro-chi dish 5 of the arc corresponding with main ruler disk 7.Micro-chi dish 5 is marked with micro-chi scale, and it is the micro-chi of 60 calibration.
As preferred structure, measure initial line bar 8 and be positioned at below main scale shaft collar 6, measure in whole side rod 9 groove 901 being provided with and passing for main scale, measure whole side rod 9 bottom surface and flush with measurement initial line bar 8 bottom surface, micro-chi fixed mount 4 is positioned at above main scale shaft collar 6.
As shown in Figure 4, portable High-precision angle measuring instrument angle measurement limiting principle figure is held.Main scale handle 2 is fixed with main scale shaft collar 6, near the left side of rotating shaft 3, the i.e. broken line that forms of A, B, C, this angular instrument can survey maximum angle, will depend on the size at AB (line overlapped with AO, namely by center of circle O) pitch angle, in right-angle triangle AOF, tan ∠ FAB=OF/AF, for this reason, this angular instrument maximum can the scope of taking measurement of an angle be 0 ° ~ (360 ° of-arctanFO/AF).It should be noted that, parallax AO can not tilt very much again, otherwise hold fixed handle will be shaky, easily make a mess of.
As shown in Figure 5, portable High-precision angle measuring instrument precision schematic diagram is held.60 lattice on micro-chi dish 5, equal with 29 lattice radians in main ruler disk 7 (namely the radian of 14.5 ° is equal), the lattice like this on micro-chi dish 5 are just equivalent to 0.5 ' (0.5 point), and namely the precision of this micro-chi angular instrument is 0.5 ' (30 ").
As described in Figure 6, portable High-precision angle measuring instrument measuring principle figure is held.If there is a measured angle parts determinand 10, be sandwiched between the whole side rod 9 of the measurement initial line bar 8 below main scale shaft collar 6 and the measurement below main scale shaft collar 6, under this state, as shown in Figure 7, institute's measuring angle is 30 ° 11 ' to detailed reading.
Shown in the above and figure is only preferred implementation of the present utility model.It should be pointed out that for the person of ordinary skill of the art, under the prerequisite not departing from the utility model principle, can also make some modification and improvement, these also should be considered as belonging to protection domain of the present utility model.
Claims (3)
1. hold portable High-precision angle measuring instrument, comprise main scale, described main scale comprises main scale shaft collar (6) and is arranged on the main ruler disk (7) of main scale shaft collar (6) outer ring, it is characterized in that described main scale shaft collar (6) circle centre position is fixedly installed rotating shaft (3), the upper rotation of described rotating shaft (3) is arranged measures initial line bar (8) and measures whole side rod (9), described measurement initial line bar (8) forms main scale handle (2) to extending away from main scale shaft collar (6) direction, the center of circle, the whole side rod (9) of described measurement forms micro-chi handle (1) to extending away from main scale shaft collar (6) direction, the center of circle, one end that the whole side rod (9) of described measurement is connected with rotating shaft (3) is fixedly installed micro-chi fixed mount (4), described micro-chi fixed mount (4) is fixedly installed the micro-chi dish (5) of the arc corresponding with main ruler disk (7).
2. hold portable High-precision angle measuring instrument as claimed in claim 1, it is characterized in that described measurement initial line bar (8) is positioned at main scale shaft collar (6) below, the groove (901) passed for main scale is provided with in the whole side rod (9) of described measurement, whole side rod (9) bottom surface of described measurement flushes with measurement initial line bar (8) bottom surface, and described micro-chi fixed mount (4) is positioned at main scale shaft collar (6) top.
3. hold portable High-precision angle measuring instrument as claimed in claim 1, it is characterized in that described micro-chi dish (5) is the micro-chi of 60 calibration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520349980.6U CN204705283U (en) | 2015-05-27 | 2015-05-27 | Hold portable High-precision angle measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520349980.6U CN204705283U (en) | 2015-05-27 | 2015-05-27 | Hold portable High-precision angle measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204705283U true CN204705283U (en) | 2015-10-14 |
Family
ID=54284888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520349980.6U Expired - Fee Related CN204705283U (en) | 2015-05-27 | 2015-05-27 | Hold portable High-precision angle measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204705283U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017152220A1 (en) * | 2016-03-08 | 2017-09-14 | University Of Technology Sydney | Measuring device and method of pattern making using same |
-
2015
- 2015-05-27 CN CN201520349980.6U patent/CN204705283U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017152220A1 (en) * | 2016-03-08 | 2017-09-14 | University Of Technology Sydney | Measuring device and method of pattern making using same |
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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: 20151014 Termination date: 20160527 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |