CN201787915U - Precision goniometer - Google Patents
Precision goniometer Download PDFInfo
- Publication number
- CN201787915U CN201787915U CN2010205249111U CN201020524911U CN201787915U CN 201787915 U CN201787915 U CN 201787915U CN 2010205249111 U CN2010205249111 U CN 2010205249111U CN 201020524911 U CN201020524911 U CN 201020524911U CN 201787915 U CN201787915 U CN 201787915U
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- CN
- China
- Prior art keywords
- locking device
- objective table
- gear
- precision
- wheel
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- 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 - Lifetime
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Abstract
The utility model provides a precision goniometer without repeatedly defining the minimum deviation angles of spectral lines. The precision goniometer is characterized in that an objective table is connected with an objective table large gear in a matching manner by the aid of a precision shafting, an objective table small gear is connected with a base in a matching manner by the aid of another precision shafting, a locking device is mounted between a precision shafting system and the base, the precision shafting system consists of the objective table, the objective table large gear and the objective table small gear, the locking device consists of a locker, a locking device small gear and a locking device large gear in connection by the aid of a precision shafting, the objective table large gear meshes with the locking device small gear, the gear ratio of the objective table large gear to the locking device small gear is 4:1, the objective table small gear meshes with the locking device large gear, and the gear ratio of the objective table small gear to the locking device large gear is 2:1. The precision goniometer can conveniently find out the minimum deviation angle of another spectral line after measuring the minimum deviation angle of one spectral line.
Description
Technical field
The utility model relates to a kind of optical instrument, particularly relates to a kind of precision goniometer.
Background technology
When adopting precision goniometer in the past with minimum deviation horn cupping test refractive index, spectral line of every test just need be sought angle of minimum deviation again, so not only need a large amount of time to redefine the angle of minimum deviation position of spectral line, if and careless slightlyly in test process run into receiver, the position of so whole angle of minimum deviation all can change a lot, cause data to produce, need test again than large deviation.
The utility model content
Technical problem to be solved in the utility model provides a kind of precision goniometer that does not need to repeat to determine the angle of minimum deviation of spectral line.
The technical scheme that the utility model technical solution problem is adopted is: precision goniometer, objective table and objective table gear wheel are connected by precision bearing system, objective table pinion wheel and base are connected by another group precision bearing system, described by objective table, the objective table gear wheel, between precision bearing system system that the objective table pinion wheel constitutes and the base locking device has been installed, described locking device is by locker, locking device pinion wheel and locking device gear wheel are formed by connecting by precision bearing system, described objective table gear wheel and locking device pinion, and the gear ratio between objective table gear wheel and the locking device pinion wheel is 4: 1, described objective table pinion wheel and the engagement of locking device gear wheel, and the gear ratio of objective table pinion wheel and locking device gear wheel is 2: 1.
The beneficial effects of the utility model are: the angular relationship when testing refractive index according to the employing angle of minimum deviation method of deriving between incident angle and the angle of minimum deviation, designed the gear train of this angular relationship of cover realization, by gear train ingenious arrange and gear between engaged transmission, and the drive connection of employing locking device lock gear system, only need micro-tensioning system, in the time of just can after the angle of minimum deviation that measures a certain spectral line, surveying the angle of minimum deviation of another spectral line again, search out the angle of minimum deviation of spectrum line easily, thereby realize having determined after the angle of minimum deviation of any spectral line for the first time, do not need to seek again again the angle of minimum deviation of next bar spectral line, guaranteed the test data consistance, convenient and time-saving, simplify test process, improved testing efficiency.
Description of drawings
Fig. 1 is a principle derivation synoptic diagram of the present utility model.
Fig. 2 is a front view of the present utility model.
Fig. 3 is the vertical view of Fig. 2.
Embodiment
Principle of the present utility model is derived as shown in Figure 1, and BC, DC are respectively the extended line of incident normal, outgoing normal among the figure, and BE, DE are the extended line of incident ray, emergent ray.
In quadrilateral BCDE, have:
∠C＝360°-∠BED-∠EBC-∠EDC＝360°-(180°-δ)-i-r?①
(i is an incident angle in the formula, and r is an emergence angle, and δ is an angle of minimum deviation)
In quadrilateral ABCD, have:
∠C＝360°-∠ABC-∠ADC-α＝360°-90°-90°-α ②
(α is the sample drift angle in the formula, is known constant)
Got by 1.-2. formula: δ-i-r+ α=0 3.
3. the formula differentiate gets: Δ δ-Δ i-Δ r=0
Because incident angle i=emergence angle r in isosceles triangle, therefore,
Δδ＝2ΔI ④
That is to say, all the time satisfy formula relation 4. between the changes delta i of spectral line incident angle and the changes delta δ of its angle of minimum deviation, therefore, if in the reality test, use some device to guarantee formula realization 4., when the angle of minimum deviation that measures a certain spectral line is so surveyed the angle of minimum deviation of another spectral line again, only need to guarantee above-mentioned angular relationship, just can redefine the position of the angle of minimum deviation of spectral line fast and accurately.
As Fig. 2-shown in Figure 3, the objective table 2 of precision goniometer of the present utility model and objective table gear wheel 3 are connected by precision bearing system, objective table 2 drives by objective table gear wheel 3 and rotates, and objective table pinion wheel 4 is connected by another group precision bearing system with the base 1 of band photoelectric code disk; A locking device has been installed between precision bearing system system that constitutes by objective table 2, objective table gear wheel 3, objective table pinion wheel 4 and base 1, described locking device is formed by connecting by precision bearing system by locker 7, locking device pinion wheel 5 and locking device gear wheel 6, the locking of locking device by locker 7 with loosen, realize the synchronous rotation and the asynchronous rotation of locking device pinion wheel 5 and locking device gear wheel 6; Objective table gear wheel 3 and 5 engagements of locking device pinion wheel, and the gear ratio between objective table gear wheel 3 and the locking device pinion wheel 5 is 4: 1, objective table pinion wheel 4 and 6 engagements of locking device gear wheel, and the gear ratio of objective table pinion wheel 4 and locking device gear wheel 6 is 2: 1; Locking device be fixed on the band bearing frame support 8 on, the bearing of support 8 by screw retention on base 1.
System of the present utility model middle gear drive connection is derived as follows:
Gear ratio satisfies following formula
i
ij＝ω
i/ω
j＝Z
j/Z
i ⑤
i
Ij-------------expression gear ratio
ω
i, Z
i-------------respectively represents the angular velocity and the number of teeth of driving wheel
ω
j, Z
j-------------respectively represents the angular velocity and the number of teeth of engaged wheel
Realize the angular relationship that exists between above-mentioned incident angle and the angle of minimum deviation, promptly rotate X when spending when base 1, objective table 2 will rotate the X/2 degree, will realize ω exactly
3/ ω
4(the angular velocity ratio between objective table gear wheel 3 and the objective table pinion wheel 4)=1: 2.
When locker 7 was in locking state, locking device gear wheel 6 had unequal angular velocity with locking device pinion wheel 5, i.e. ω
6=ω
5, again owing to objective table gear wheel 3 and 5 engagements of locking device pinion wheel, objective table pinion wheel 4 and 6 engagements of locking device gear wheel are so the ratio of gear of objective table pinion wheel 4 and locking device gear wheel 6 should satisfy
i
46＝ω
4/ω
6＝Z
6/Z
4＝1∶2 ⑥
So ω
6=ω
5=2 ω
47.
Again owing to the ratio of gear of objective table gear wheel 3 with locking device pinion wheel 5 should satisfy
i
35＝ω
3/ω
5＝Z
5/Z
3＝1/4 ⑧
7. bringing formula into formula 8. gets: ω
3/ ω
4=1: 2
So when locker 7 was in locking state, base 1 rotated the X degree, objective table pinion wheel 4 can correspondingly drive locking device gear wheel 6 and locking device pinion wheel 5 rotates synchronously, rotates by the engagement between series of gears, just realizes that objective table 2 rotates the X/2 degree.
When testing the refractive index of prism glass with the minimum deviation horn cupping, when the tester need forward another spectral line to be measured to from the characteristic spectral line of having surveyed, only need the base 1 of rotating band photoelectric code disk, promptly changed the size of incident angle i, at this moment because locking device has been locked the relative position between locking device pinion wheel 5 and its system, they are not produced relatively move, guaranteed the realization of Δ δ=2 Δ i, just can seek the position of other spectral line angle of minimum deviation to be measured easily.
In order to guarantee the degree of accuracy of rotational angle, locking device pinion wheel 5 of the present utility model, locking device gear wheel 6 all adopt the structure of double gear in addition.
Claims (4)
1. precision goniometer, objective table (2) is connected by precision bearing system with objective table gear wheel (3), objective table pinion wheel (4) is connected by another group precision bearing system with base (1), it is characterized in that: described by objective table (2), objective table gear wheel (3), between precision bearing system system that objective table pinion wheel (4) constitutes and the base (1) locking device has been installed, described locking device is by locker (7), locking device pinion wheel (5) and locking device gear wheel (6) are formed by connecting by precision bearing system, described objective table gear wheel (3) and locking device pinion wheel (5) engagement, and the gear ratio between objective table gear wheel (3) and the locking device pinion wheel (5) is 4: 1, described objective table pinion wheel (4) and locking device gear wheel (6) engagement, and the gear ratio of objective table pinion wheel (4) and locking device gear wheel (6) is 2: 1.
2. precision goniometer as claimed in claim 1 is characterized in that: the locking of described locking device by locker (7) with loosen, realize the synchronous rotation and the asynchronous rotation of locking device pinion wheel (5) and locking device gear wheel (6).
3. precision goniometer as claimed in claim 1 is characterized in that: described locking device be fixed on the band bearing support (8) on, the bearing of described support (8) by screw retention on base (1).
4. precision goniometer as claimed in claim 1 is characterized in that: described base (1) has photoelectric code disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205249111U CN201787915U (en) | 2010-09-10 | 2010-09-10 | Precision goniometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205249111U CN201787915U (en) | 2010-09-10 | 2010-09-10 | Precision goniometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201787915U true CN201787915U (en) | 2011-04-06 |
Family
ID=43819874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205249111U Expired - Lifetime CN201787915U (en) | 2010-09-10 | 2010-09-10 | Precision goniometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201787915U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108152852A (en) * | 2017-12-12 | 2018-06-12 | 中国计量科学研究院 | A kind of adjustable monocrystalline monochromator |
| CN112325800A (en) * | 2020-09-22 | 2021-02-05 | 南京奂美光学科技有限公司 | Novel accurate angular instrument of photoelectric equipment |
| CN114700767A (en) * | 2022-04-24 | 2022-07-05 | 安徽机电职业技术学院 | High-precision rotary positioning workbench for machining |
-
2010
- 2010-09-10 CN CN2010205249111U patent/CN201787915U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108152852A (en) * | 2017-12-12 | 2018-06-12 | 中国计量科学研究院 | A kind of adjustable monocrystalline monochromator |
| CN112325800A (en) * | 2020-09-22 | 2021-02-05 | 南京奂美光学科技有限公司 | Novel accurate angular instrument of photoelectric equipment |
| CN112325800B (en) * | 2020-09-22 | 2022-04-12 | 南京奂美光学科技有限公司 | Precise angle measuring instrument for photoelectric equipment |
| CN114700767A (en) * | 2022-04-24 | 2022-07-05 | 安徽机电职业技术学院 | High-precision rotary positioning workbench for machining |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110406 |
|
| CX01 | Expiry of patent term |