CN105783791A - Precise small angle measurement device - Google Patents
Precise small angle measurement device Download PDFInfo
- Publication number
- CN105783791A CN105783791A CN201610304167.6A CN201610304167A CN105783791A CN 105783791 A CN105783791 A CN 105783791A CN 201610304167 A CN201610304167 A CN 201610304167A CN 105783791 A CN105783791 A CN 105783791A
- Authority
- CN
- China
- Prior art keywords
- cantilever beam
- digital display
- micro
- adjusting mechanism
- display case
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention relates to a precise small angle measurement device, and belongs to the technical field of metering. The device achieves the measurement of a small angle through the sine principle, and the structure of the device comprises a flat plate (1), a cantilever beam (2), a rotating mechanism (3), a fine tuning mechanism (4), a sensing apparatus (6), and a digital display box (5). The rotating mechanism (3), the fine tuning mechanism (4), the sensing apparatus (6) and the digital display box (5) are fixed on the flat plate (1). One end of the cantilever beam (2) is fixedly installed on the rotating mechanism (3), and the other end of the cantilever beam (2) is disposed on the fine tuning mechanism (4). The sensing apparatus (6) is located above the fine tuning mechanism (4), can measure the rising/falling height of one end of the cantilever beam (2), and transmits the height to the digital display box (5). The digital display box (5) calculates and displays an angle value according to the rising/falling height of one end of the cantilever beam (2) and the effective length of the cantilever beam (2). Compared with the prior art, the device is simple in operation, is stable in reading, is compact in structure, and is good in anti-interference capability.
Description
Technical field
The present invention relates to a kind of measurement instrument, measure instrument particularly to a kind of precision small angle, belong to field of measuring techniques.
Background technology
At present, narrow angle measuring device is widely used in each scientific research metering place.Angle quasi-instrument inspection is played vital effect, is indispensable calibrating instrument in scientific research gage work.Traditional low-angle somascope, is instruction device such as assembling micrometer, optics meter etc. in the fixing distance between axles of bridge shape workbench, and coordinates gauge block to adjust table inclination, thus reappearing a certain standard angle.When often adjusting an angle, it is necessary to combine different gauge blocks, and the low-angle value reappeared is discrete interruption, and operating procedure is complicated, and reading is not directly perceived, and later stage calculation processes is complicated, significantly constrains quality and the efficiency of low-angle detection.
Summary of the invention
The invention aims to solve existing narrow angle measuring device and use trouble, complex operation, time and effort consuming, the problem being not easy to reading and use accurately, propose a kind of precision small angle measurement apparatus, utilize this device to facilitate and stably directly measure angle value.
Idea of the invention is that and utilize sine principle α=asin (H/L) design to realize narrow angle measuring device, completing the measurement of H and L on a set of equipment, and directly calculate by formula and show result, wherein asin () is arcsin function.
It is an object of the invention to be achieved through the following technical solutions:
A kind of precision small angle measurement apparatus, including flat board, cantilever beam and rotating mechanism, micro-adjusting mechanism and sensing device, digital display case；Rotating mechanism, micro-adjusting mechanism, sensing device and digital display case are fixedly installed on flat board, cantilever beam one end is fixedly installed in rotating mechanism, one end is placed on micro-adjusting mechanism, sensing device is positioned at above micro-adjusting mechanism, the height of cantilever beam one end lifting can be measured, and height value is sent to digital display case, digital display case the height lifted according to cantilever beam one end and cantilever beam length computation angles of display value；
Flat board is used for installing cantilever mounted beam and rotating mechanism, micro-adjusting mechanism and sensing device, digital display case, is used for placing tested instrument in measurement process；
Cantilever beam is used for providing the adjustable height H in measurement process and effective length L and the grinding plate that tested level indicator is placed；
Rotating mechanism is for providing the rotational support of cantilever beam one end in the course of the work；
Micro-adjusting mechanism changes to realize its minute angle for providing the lifting of the cantilever beam other end in the course of the work；
Sensing device is for measuring the displacement amount H that cantilever beam lifts in the course of the work, and it is sent to digital display case；
Digital display case is for the displacement amount H received, the effective length L according to cantilever beam, being calculated obtaining angle value α and showing according to formula α=asin (H/L)；
Work process: tested level indicator is placed on a cantilever beam and adjusts position, rotate micro-adjusting mechanism, realize cantilever beam one end lift around the other end or reduce H, digital display case is measured and sent to H-number by sensing device, and digital display case calculates angle variable quantity α according to formula α=asin (H/L) and shows.
As preferably, in order to expand calibration range, also with reflecting mirror on described cantilever beam, for the calibration of autocollimator.
As preferably, described reflecting mirror can move up and down by the vertical direction, to adapt to the calibration of the autocollimator of different model.
As preferably, described rotating mechanism mainly contains two V-groove and a mandrel, and mandrel is placed on V-groove, free to rotate, and two ends are limited by limited block so that it is axial displacement does not occur.
As preferably, described cantilever beam is L-type structure, and its upper end is provided with grinding plate, and grinding plate is provided with 2 V-type limited blocks, is used for installing fixing tested level indicator.
As preferably, in order to make described cantilever beam and described micro-adjusting mechanism be in close contact all the time, strengthening the sensitivity of this device, in one end that described cantilever beam contacts with described micro-adjusting mechanism, by extension spring, described cantilever beam is fixed on described flat board.
Beneficial effect
Apparatus of the present invention are compared with present low-angle somascope, and simpler fast at small angle measurement range of operation, reading is more stable, structure is compacter, avoiding the upper personal error introduced of operation, owing to measured object and device are in together on one flat plate, capacity of resisting disturbance is higher.This device can produce ± 50 ' standard angles, can be used for examining and determine autocollimator, combined diagram level, electrolevel angularly measurement instrument, it is also possible to needs to produce low-angle research and production place in other.The advantages such as it has stable performance, reproducible, easy to use.
Accompanying drawing explanation
Fig. 1 is the accurate little degree measurement apparatus principle schematic of embodiment of the present invention one.
Fig. 2 is the accurate little degree measurement apparatus structure front view of embodiment of the present invention one.
Fig. 3 is the accurate little degree measurement apparatus structural side view of embodiment of the present invention one.
Fig. 4 is cantilever beam structure schematic diagram
Fig. 5 is rotating mechanism structural representation.
Fig. 6 is micro-adjusting mechanism structural representation
Fig. 7 is sensing device structural representation
Accompanying drawing labelling: 1-flat board, 2-cantilever beam, 3-rotating mechanism, 4-micro-adjusting mechanism, 5-digital display case, 6-sensing device, 21-reflecting mirror, 22-grinding plate, 23-jacking block, 31-mandrel, 32-limited block, 33-V type groove, 41-drag hook, 42-extension spring, 43-rotary knob, 44-fixed mechanism, 61-sensor holder, 62-sensor wrap, 63-installing hole.
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, the present invention is described in detail.
Embodiment 1
It is illustrated in figure 1 apparatus of the present invention principle schematic, based on small angle measurement formula α=asin (H/L), when known H and L time, it is possible to calculate low-angle value.Being a kind of precision small angle measurement apparatus structural representation as shown in Figure 2 and Figure 3, as can be seen from Figure, this device includes flat board 1, cantilever beam 2 and rotating mechanism 3, micro-adjusting mechanism 4 and sensing device 6, digital display case 5；Rotating mechanism 3, micro-adjusting mechanism 4, sensing device 6 and digital display case 5 are fixedly installed on flat board 1, cantilever beam 2 one end is fixedly installed in rotating mechanism 3, one end is placed on micro-adjusting mechanism 4, sensing device 6 is positioned at above micro-adjusting mechanism 4, the height of cantilever beam 2 one end lifting can be measured, and height value is sent to digital display case 5, digital display case 5 height lifted according to cantilever beam 2 one end and cantilever beam 2 length computation angles of display value；
Measurement process:
Rotate micro-adjusting mechanism 4, it is achieved cantilever beam 2 one end is lifted or reduced the concrete numerical value of H, H and recorded by sensing device 6, and according to principle formula, the effective length L of cantilever beam 2 preset by digital display case 5, calculates angle variable quantity α according to formula.
Flat board 1 is used for installing cantilever mounted beam 2 and rotating mechanism 3, micro-adjusting mechanism 4 and sensing device 6, digital display case 5 etc., is used for placing tested instrument in measurement process.Being generally adopted granite and marble or cast iron is made, this device adopts granite and marble.
As shown in Figure 4, cantilever beam 2 is used for providing the adjustable height H in measurement process and effective length L and the grinding plate 22 that tested level indicator is placed, and its one end is with jacking block 23, for corresponding with sensing device 6 position.Grinding plate 22 is provided with 2 V-type limited blocks, is used for installing fixing tested level indicator.Additionally, for the measurement scope expanding this device, cantilever beam 2 is also equipped with reflecting mirror 21, for the measurement of autocollimator.Autocollimator model for measuring is many as far as possible, makes reflecting mirror 21 to hold within the specific limits and moves up and down.
As shown in Figure 5, rotating mechanism 3 is for providing the rotational support of cantilever beam one end in the course of the work, mainly including mandrel 31, limited block 32 and V-groove 33, V-block 33 is fixedly installed on flat board 1, mandrel 31 is placed on V-block 33, two ends are spacing by limited block 32 so that it is can not move axially, but can be freely rotatable on V-block 33, mandrel 31 has installing hole, is used for fixedly mounting overarm arm 2.In work process, cantilever beam 2 rotates around mandrel 31 with mandrel 31 for fulcrum.
As shown in Figure 6, cantilever beam 2 one end is lifted as required by micro-adjusting mechanism 4 in work process, realize small angle variation, including rotary knob 43 and fixed mechanism 44, fixed mechanism 44 is fixedly mounted on flat board 1, rotary knob 43 and cantilever beam thereon 2 are played a supportive role, and rotary knob 43 realizes oscilaltion, thus driving cantilever beam 2 to be positioned at the lifting of micro-adjusting mechanism 4 upper end.For improving the sensitivity that the lifting of cantilever beam 2 end rotates with rotary knob 43, each on fixed mechanism 44 and cantilever beam 2 fix a drag hook 41, by extension spring 42 being articulated between two drag hooks 41, it is achieved rotary knob 43 keeps the close contact of cantilever beam 2 and rotary knob 43 in the process rotated.
The effective length L of cantilever beam 2 preset by digital display case 5, is connected with sensor 63 by cable, obtains its displacement variable H, goes out angle variable quantity α according to what principle formula calculated.
As shown in Figure 7, sensing device 6 is for recording the displacement amount H that in micro-adjusting mechanism work process, cantilever beam lifts or reduces, to bring principle formula into calculate, including sensor holder 61 and sensor 62, sensor 62 is fastened on sensor holder 61 by installing hole 63, sensor holder 61 is fixedly installed on flat board 1, its position is corresponding with the jacking block 23 on cantilever beam 2, sensor 62 contacts with jacking block 23, sensor 63 is made to measure the displacement L of micro-adjusting mechanism lifting, namely the height L that cantilever beam rises or reduces, the sensor adopted in the present embodiment is grating measuring length sensor.Additionally, for protecting sensor, can effectively it be protected by increasing protective cover.
The work process of the present invention: tested level indicator is placed on the grinding plate 22 of cantilever beam 2 and adjusts position or autocollimator is placed on flat board 1 and is adjusted the luminous energy that position makes it send and reflected by the reflecting mirror 21 on cantilever beam 2, by rotary knob 43, produce oscilaltion, cantilever beam 2 is driven to rotate around mandrel 31, sensor 62 can record the distance H of lifting, and H is sent to digital display case 5 by cable, digital display case 5 has been prefixed the brachium L of cantilever beam, when H changes, namely digital display case 5 calculates according to formula, demonstrates angle changing value α.Namely the measurement result α of apparatus of the present invention be would know that compared with the measurement result of tested instrument the error condition of tested instrument.
Above-described specific descriptions; the purpose of invention, technical scheme and beneficial effect have been further described; it is it should be understood that; the foregoing is only specific embodiments of the invention; the protection domain being not intended to limit the present invention; all within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (6)
1. a precision small angle measurement apparatus, it is characterized in that, including flat board (1), cantilever beam (2) and rotating mechanism (3), micro-adjusting mechanism (4) and sensing device (6), digital display case (5)；Rotating mechanism (3), micro-adjusting mechanism (4), sensing device (6) and digital display case (5) are fixedly installed on flat board (1), cantilever beam (2) one end is fixedly installed in rotating mechanism (3), one end is placed on micro-adjusting mechanism (4), sensing device (6) is positioned at micro-adjusting mechanism (4) top, the height of cantilever beam (2) one end lifting can be measured, and height value is sent to digital display case (5), the height lifted according to cantilever beam (2) one end by digital display case (5) and cantilever beam (2) effective length calculate and angles of display value；
Flat board (1) is used for installing cantilever mounted beam (2) and rotating mechanism (3), micro-adjusting mechanism (4) and sensing device (6), digital display case (5), is used for placing tested instrument in measurement process；
Cantilever beam (2) is used for providing the adjustable height H in measurement process and effective length L and the grinding plate that tested level indicator is placed；
Rotating mechanism (3) is used for providing the rotational support of cantilever beam (2) one end in the course of the work；
Micro-adjusting mechanism (4) is used for the lifting providing cantilever beam (2) other end in the course of the work to realize the change of its minute angle；
Sensing device (6) is used for measuring the displacement amount H that cantilever beam (2) lifts in the course of the work, and it is sent to digital display case (5)；
Digital display case (5) is for the displacement amount H received, the effective length L according to cantilever beam (2), being calculated obtaining angle value α and showing according to formula α=asin (H/L)；
Work process: tested level indicator is placed on cantilever beam (2) and above and adjusts position, rotate micro-adjusting mechanism (4), realize cantilever beam (2) one end lift around the other end or reduce H, digital display case (5) is measured and sent to H-number by sensing device (6), and digital display case (5) calculates angle variable quantity α according to formula α=asin (H/L) and shows.
2. a kind of precision small angle measurement apparatus according to claim 1, it is characterised in that in order to expand calibration range, also with reflecting mirror (21) on described cantilever beam (2), for the calibration of autocollimator.
3. a kind of precision small angle measurement apparatus according to claim 2, it is characterised in that described reflecting mirror (21) can move up and down by the vertical direction, to adapt to the calibration of the autocollimator of different model.
4. a kind of precision small angle measurement apparatus according to claim 1, it is characterized in that, described rotating mechanism (3) includes V-groove (33), mandrel (31) and limited block (32), mandrel (31) is placed on V-groove (33), free to rotate, two ends are limited by limited block (32) so that it is axial displacement does not occur.
5. a kind of precision small angle measurement apparatus according to claim 1, it is characterized in that, described cantilever beam (2) is L-type structure, its upper end is provided with grinding plate (22), grinding plate (22) is provided with 2 V-type limited blocks, is used for installing fixing tested level indicator.
6. according to the arbitrary described a kind of precision small angle measurement apparatus of claim 1-5, it is characterized in that, in order to make described cantilever beam (2) and described micro-adjusting mechanism (4) be in close contact all the time, strengthen the sensitivity of this device, in one end that described cantilever beam (2) contacts with described micro-adjusting mechanism (4), by extension spring (42), described cantilever beam (2) is pressed on described micro-adjusting mechanism (4).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510918546 | 2015-12-10 | ||
| CN201510918546X | 2015-12-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105783791A true CN105783791A (en) | 2016-07-20 |
Family
ID=56401403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610304167.6A Pending CN105783791A (en) | 2015-12-10 | 2016-05-10 | Precise small angle measurement device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105783791A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167097A (en) * | 2017-06-01 | 2017-09-15 | 中国航发湖南动力机械研究所 | Corner measuring apparatus |
| CN110081182A (en) * | 2019-05-07 | 2019-08-02 | 杭州国辰机器人科技有限公司 | A kind of detection system for locking wind flap valve corner state |
-
2016
- 2016-05-10 CN CN201610304167.6A patent/CN105783791A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167097A (en) * | 2017-06-01 | 2017-09-15 | 中国航发湖南动力机械研究所 | Corner measuring apparatus |
| CN110081182A (en) * | 2019-05-07 | 2019-08-02 | 杭州国辰机器人科技有限公司 | A kind of detection system for locking wind flap valve corner state |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201688812U (en) | Tooling for measuring depth of groove in hole | |
| CN202158818U (en) | Simple and convenient multipurpose detection platform | |
| CN109115074B (en) | Measuring instrument for tooth crest runout degree in equal proportion scaling | |
| CN201569402U (en) | Measuring tool for assembly groove arc of guide vane | |
| CN105783791A (en) | Precise small angle measurement device | |
| CN209043253U (en) | A kind of small-sized orifice aperture measurement device of Industrial Engineering | |
| CN201133798Y (en) | Centralizer | |
| CN209783507U (en) | Sheet flatness measuring device | |
| CN204988191U (en) | Adopt parallel laser projection method to measure portable equipment of cigarette length and diameter | |
| CN205279969U (en) | Deviation from cylindrical form measuring device | |
| CN202734695U (en) | Central pitch digital display caliper | |
| CN215491493U (en) | Concentricity detects instrument | |
| CN203534917U (en) | Measuring device for shear modulus of transmission line | |
| CN206891361U (en) | A kind of cylinder linearity testing apparatus | |
| CN2663917Y (en) | Apparatus for measuring average change of outside diameter of flanged bearing ring | |
| CN207407829U (en) | A kind of standard clearance device | |
| CN205561812U (en) | Power assisted steering oil pump blade straightness verifying attachment that hangs down | |
| CN2047777U (en) | Forked radius-measuring instrument for cylinder | |
| CN201593965U (en) | Calibrating tool for axle type part diameter measuring device | |
| CN212806971U (en) | Intelligent inspection bench is used in grinding wheel production | |
| CN216448777U (en) | Feeler gauge for building engineering measurement | |
| CN204373536U (en) | A kind of with the sine gauge clamped and mark | |
| CN219829731U (en) | Bridge ruler checking fixture for pump shell | |
| CN205027270U (en) | Plate thickness on -line measuring device | |
| CN209069169U (en) | It is a kind of for measuring the detection instrument of punching press sheet metal component scale error |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160720 |
|
| WD01 | Invention patent application deemed withdrawn after publication |