CN202757593U - Double tube angle measuring apparatus - Google Patents
Double tube angle measuring apparatus Download PDFInfo
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- CN202757593U CN202757593U CN 201220382766 CN201220382766U CN202757593U CN 202757593 U CN202757593 U CN 202757593U CN 201220382766 CN201220382766 CN 201220382766 CN 201220382766 U CN201220382766 U CN 201220382766U CN 202757593 U CN202757593 U CN 202757593U
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- autocollimator
- main shaft
- turntable
- adjustment rack
- tube angle
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Abstract
The utility model provides a double tube angle measuring apparatus, comprising two autocollimators, two autocollimator adjusting mounts and a rotary table which is in connection with one of the autocollimator adjusting mounts through a linking arm, a base fixing the other autocollimator adjusting mount through a vertical arm which is perpendicular to the base, a main shaft arranged in a center of the rotary table, penetrating the rotary table and fixing to the base, a multidimensional adjusting rack fixed right above the main shaft, and a bearing table fixed right above the multidimensional adjusting rack. The double tube angle measuring apparatus can measure optical dihedral angles, light beam deflecting angles and angle absolute values. The double tube angle measuring apparatus performs non-contact measurement; the operation process is simple and high efficient, measuring repeatability is good and precision is high; the repeatability precision can be 1 ''; influences of placement surface side perpendicularity and placement precision in measuring processes can be reduced and equipment costs are low.
Description
[technical field]
The utility model relates to photoelectric measurement instrument, particularly a kind of two-tube angle-measuring equipment.
[background technology]
The measuring method of prism angle commonly used has two kinds at present: the optics dihedral angle of 1, using autocollimator and calibrated bolck comparative method for measuring prism, this method is based on the optical surface of a prism and fully contacting of reference plane, the method of this contact is easily damaged the smooth finish of optical surface, because optical surface usually can't overlap fully with reference plane, greatly affected measuring accuracy simultaneously; 2, adopt autocollimator to add to join grating scale or optical dividing head is realized, this method can only realize the absolute measurement of angle, and transfer picture owing to need to treat respectively two optical surfaces of measuring angle when measuring, transferring usually needs repeatedly to regulate as process, thereby efficient is measured in impact.
Invention disclosed patent on July 20 " optical splitting goniometer " in 2011, it comprises collimator and autocollimator, when measuring dihedral angle, collimator is not used, autocollimator is accessed light source, rotate autocollimator and obtain respectively the reflection image of testing sample first surface and second reflection image, the angle value of two reflection image formation is the dihedral angle of testing sample, this optical splitting goniometer catches the angle value that autocollimator turns over by optical encoder, thereby obtain dihedral angle to be measured, it is a kind of absolute angular instrument, its measuring accuracy is directly related to the optical encoder precision, also can be subject to the lateral vertical degree (hanging down hereinafter to be referred as: side) of testing sample and the impact of testing sample placement precision, described lateral vertical degree refers to the verticality between placed side and measured first surface or second, and for the relatively poor testing sample of lateral vertical degree, after may occurring obtaining the reflection image of the first reflecting surface, the reflection image that will repeatedly just can obtain several times second maybe can't obtain second reflection image, described placement precision refers to whether testing sample bearing platform is smooth, if dust or the grains of sand etc. are arranged, will have influence on measuring accuracy, therefore, " optical splitting goniometer " disclosed angular instrument is higher to the vertical precision of the side of testing sample and placement accuracy requirement.And the present invention utilizes two autocollimators to obtain respectively first two reflection images of calibrated bolck, obtain respectively again two reflection images of testing sample, then the angle difference between the image space of the image space of more measured calibrated bolck and testing sample, it is a kind of contrast angular instrument, two autocollimators obtain respectively imaging, the impact that not hung down by side, thereby can reduce even ignore the vertical precision of testing sample self side and place precision to the impact of angle measurement accuracy.To measure the minute differences of testing sample and calibrated bolck angle for the measurement at beam separation angle principle of the present invention, there is essence different from the principle of angular instrument in " optical splitting goniometer ", and the present invention do not need expensive high-precision optical scrambler, and tool has great advantage on the cost.
[utility model content]
The technical problems to be solved in the utility model is to provide a kind of two-tube angle-measuring equipment, and it is non-contact measurement, and operating process is simply efficient, and measuring repeatability is good, precision is high, and repeatable accuracy can reach 1 ".
A kind of two-tube angle-measuring equipment comprises:
Two autocollimators comprise the first autocollimator and the second autocollimator;
Two autocollimator adjustment racks, its top is respectively equipped with a described autocollimator;
One turntable, it connects a wherein autocollimator adjustment rack by a linking arm, and this autocollimator adjustment rack is provided with described the first autocollimator, and described turntable drives the measurement that described the first autocollimator is realized 360 degree, by the locked turntable of a fastening screw;
One base, it fixes another autocollimator adjustment rack by an armstand, and this autocollimator adjustment rack is provided with described the second autocollimator, and described armstand is mutually vertical with described base;
One main shaft, it is located at the center of described turntable and runs through described turntable, and is fixed together with described base, and described main shaft, turntable and base are connected bearing and connect, and described main shaft drives described turntable by bearing and rotates;
One multidimensional adjustment rack, its be fixed in described main shaft directly over;
One bearing platform, its be fixed in described multidimensional adjustment rack directly over.
Further, described bearing is upper taper roll bearing and lower taper roll bearing, and described upper taper roll bearing is located at the top of described main shaft, and described lower taper roll bearing is located at the bottom of described main shaft.
Further, LED or based on halogen bulb are directly installed on the light source connector as external light source.
Further, after the CCD of described autocollimator reads imaging, link to each other with computing machine with 1394 interfaces by USB, by the Computer Processing imaging data, obtain measurement result.
Further, described main shaft and described base are fixed together by a trip bolt, described multidimensional adjustment rack by a tie down screw be fixed in described main shaft directly over, regulate the adjusting that locked position is realized the upper-lower position of multidimensional adjustment rack by tie down screw.
Further, described autocollimator is photoelectric auto-collimator.
The utlity model has following advantage:
The utility model can be distinguished accurate localization criteria piece and sample to be tested by two autocollimators, then the angle difference between the image space of the image space of more measured calibrated bolck and testing sample, addition or subtract each other after, obtain the angle value of specimen, it is non-contact measurement, operating process is simply efficient, measuring repeatability is good, and precision is high, and repeatable accuracy can reach 1 "; reduce the impact that the placed side side is hung down and placed precision in measuring process, and equipment cost is low.If after using optical encoder in measuring, do not need standard angle gauge block yet, directly read to get the angle value of measured angle from optical encoder, also can realize the absolute measurement of angle.
[description of drawings]
In conjunction with the embodiments the utility model is further described with reference to the accompanying drawings.
Fig. 1 is the structural representation of the two-tube proving installation of the utility model.
Fig. 2 is the light path principle figure of the utility model test light face dihedral angle.
Fig. 3 is the light path principle figure of the utility model test beams fleet angle.
[embodiment]
See also Fig. 1, a kind of two-tube angle-measuring equipment comprises:
Two autocollimators 10 comprise the first autocollimator 11 and the second autocollimator 12, and in the present embodiment, described autocollimator 10 is photoelectric auto-collimator; External cold light source enters autocollimator 10 by the light source connector 13 on the described autocollimator 10, or LED or based on halogen bulb are directly installed on the light source connector 13 as external light source.After the CCD of described autocollimator 10 reads imaging, link to each other with computing machine with 1394 by USB, by the Computer Processing imaging data, obtain measurement result;
Two autocollimator adjustment racks 20, its top is respectively equipped with a described autocollimator 10, and described autocollimator adjustment rack 20 is coaxial up and down be used to regulating described autocollimator 20;
One turntable 30, it connects a wherein autocollimator adjustment rack 20 by a linking arm 40, this autocollimator adjustment rack 20 is provided with described the first autocollimator 11, the autocollimator that described turntable 30 drives on this autocollimator adjustment rack 20 is realized 360 measurements of spending, after described turntable 30 turns to image space, by a fastening screw 31 locked turntables 30;
One base 50, it fixes another autocollimator adjustment rack 20 by an armstand 60, and this autocollimator adjustment rack 20 is provided with described the second autocollimator 12, and described armstand 60 is mutually vertical with described base 50;
One main shaft 70, it is located at the center of described turntable 30 and runs through described turntable 30, and is fixed together with described base 50, and described main shaft 70, turntable 30 are connected with base by the bearing connection, and described main shaft 70 drives described turntable by bearing and rotates; In the present embodiment, described bearing is upper taper roll bearing 71 and lower taper roll bearing 72, described upper taper roll bearing 71 is located at the top of described main shaft 70, described lower taper roll bearing 72 is located at the bottom of described main shaft 70, and described main shaft 70 drives described turntable 30 by upper taper roll bearing 71 and lower taper roll bearing 72 and rotates; Described main shaft 70 is fixed together by a trip bolt 51 with described base 50;
One multidimensional adjustment rack 80, its be fixed in described main shaft 70 directly over; Described multidimensional adjustment rack 80 can by a tie down screw 81 be fixed in described main shaft 70 directly over, regulate the adjusting that locked positions are realized the upper-lower position of multidimensional adjustment racks 80 by tie down screw 81.
One bearing platform 90, its be fixed in described multidimensional adjustment rack 80 directly over.
Angle-measuring method of the present utility model is as follows:
The principle of work of the two-tube angle-measuring equipment of the utility model is:
See also Fig. 2, the light path principle figure of display standard piece only among Fig. 2, and the light path principle of testing sample is identical with the light path principle of calibrated bolck.By the optics dihedral angle of the two-tube proving installation test of the utility model testing sample, its operation steps is as follows:
Step 1, the calibrated bolck of known angle value a is placed on the described bearing platform 90, two autocollimators 10 are all connected light source, regulate multidimensional adjustment rack 80, and revolving-turret 30, driving described the first autocollimator 11 by turntable 30 rotates, when two autocollimators 10 are adjusted to image space, by described fastening screw 31 locked turntables 30; When the choice criteria piece, make the angle value of calibrated bolck and testing sample close as far as possible, for example differ+/-0.5 ° in;
Step 2, regulate described multidimensional adjustment rack 80 and make two autocollimators 10 collect respectively the emission picture of the first reflecting surface of described calibrated bolck and the reflection image of second surface of emission, and the reflection image of the reflection image of the first reflecting surface and second surface of emission lays respectively at the center of imaging screen;
Step 3, carry out initialization take the angle value of calibrated bolck as reference value, be that angle between described two autocollimators 10 is the angle value a of described calibrated bolck, take two autocollimators, 10 joinings as true origin O, set up polar coordinates, the angle value that records the reflection image of calibrated bolck the first reflecting surface is θ
10, the angle value of the reflection image of calibrated bolck the second reflecting surface is θ
20
Step 4, take off described calibrated bolck, testing sample is placed on the described bearing platform 90, collect respectively the reflection image of the first reflecting surface of testing sample and the reflection image of second surface of emission by two autocollimators 10;
Step 5, the reflection image position of the first reflecting surface that catches testing sample and the reflection image position of second surface of emission record the angle value θ of the reflection image of testing sample the first reflecting surface
11, and the angle θ of the reflection image of second surface of emission
21Thereby the angle value that calculates testing sample optics dihedral angle is a+ (θ
10-θ
11)+(θ
20-θ
21).
See also Fig. 3, the light path principle figure of display standard piece only among Fig. 3, and the light path principle of testing sample is identical with the light path principle of calibrated bolck.By the BEAM SQUINT angle of the two-tube proving installation test of the utility model testing sample, its operation steps is as follows:
By the absolute angle value of the two-tube proving installation test of the utility model testing sample, its operation steps is as follows:
Step 100, testing sample is placed on the described bearing platform 90, regulate described multidimensional adjustment rack 80, and revolving-turret 30, driving wherein by turntable 30, an autocollimator 10 rotates, when two autocollimators 10 turn to image space, by described fastening screw 31 locked turntables 30;
Step 200, employing optical encoder are measured described turntable with respect to the angle value of described the second autocollimator by described optical encoder, and this angle value is the absolute angle value of testing sample.Described optical encoder is grating scale or optical dividing head.
The utility model is by the two autocollimators accurate localization criteria piece of difference and sample to be tested, then the angle difference between the image space of the image space of more measured calibrated bolck and testing sample, addition or subtract each other after, obtain the angle value of specimen, it is non-contact measurement, operating process is simply efficient, measuring repeatability is good, and precision is high, and repeatable accuracy can reach 1 "; reduce the impact that the placed side side is hung down and placed precision in measuring process, and equipment cost is low.If also use optical encoder in measuring, do not need standard angle gauge block, directly read to get the angle value of measured angle from optical encoder, also can realize the absolute measurement of angle.
Although more than described embodiment of the present utility model; but being familiar with those skilled in the art is to be understood that; our described specific embodiment is illustrative; rather than for the restriction to scope of the present utility model; those of ordinary skill in the art are in modification and the variation of the equivalence of doing according to spirit of the present utility model, all should be encompassed in the scope that claim of the present utility model protects.
Claims (6)
1. two-tube angle-measuring equipment is characterized in that: comprising:
Two autocollimators comprise the first autocollimator and the second autocollimator;
Two autocollimator adjustment racks, its top is respectively equipped with a described autocollimator;
One turntable, it connects a wherein autocollimator adjustment rack by a linking arm, and this autocollimator adjustment rack is provided with described the first autocollimator, and described turntable drives the measurement that described the first autocollimator is realized 360 degree, by the locked turntable of a fastening screw;
One base, it fixes another autocollimator adjustment rack by an armstand, and this autocollimator adjustment rack is provided with described the second autocollimator, and described armstand is mutually vertical with described base;
One main shaft, it is located at the center of described turntable and runs through described turntable, and is fixed together with described base, and described main shaft, turntable and base are connected bearing and connect, and described main shaft drives described turntable by bearing and rotates;
One multidimensional adjustment rack, its be fixed in described main shaft directly over;
One bearing platform, its be fixed in described multidimensional adjustment rack directly over.
2. the two-tube angle-measuring equipment shown in according to claim 1, it is characterized in that: described bearing is upper taper roll bearing and lower taper roll bearing, described upper taper roll bearing is located at the top of described main shaft, and described lower taper roll bearing is located at the bottom of described main shaft.
3. the two-tube angle-measuring equipment shown in according to claim 1 is characterized in that: LED or based on halogen bulb are directly installed on the light source connector as external light source.
4. the two-tube angle-measuring equipment shown in according to claim 1 is characterized in that: after the CCD of described autocollimator reads imaging, link to each other with computing machine with 1394 interfaces by USB, by the Computer Processing imaging data, obtain measurement result.
5. the two-tube angle-measuring equipment shown in according to claim 1, it is characterized in that: described main shaft and described base are fixed together by a trip bolt, described multidimensional adjustment rack by a tie down screw be fixed in described main shaft directly over, regulate the adjusting that locked position is realized the upper-lower position of multidimensional adjustment rack by tie down screw.
6. the two-tube angle-measuring equipment shown in according to claim 1, it is characterized in that: described autocollimator is photoelectric auto-collimator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220382766 CN202757593U (en) | 2012-08-03 | 2012-08-03 | Double tube angle measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220382766 CN202757593U (en) | 2012-08-03 | 2012-08-03 | Double tube angle measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202757593U true CN202757593U (en) | 2013-02-27 |
Family
ID=47736766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220382766 Expired - Fee Related CN202757593U (en) | 2012-08-03 | 2012-08-03 | Double tube angle measuring apparatus |
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| Country | Link |
|---|---|
| CN (1) | CN202757593U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798357A (en) * | 2012-08-03 | 2012-11-28 | 福州华友光学仪器有限公司 | Device and method for double-barrelled angle measurement |
| CN108955580A (en) * | 2018-08-27 | 2018-12-07 | 中山大学 | A kind of method of the outer vertical angle measurement of high-precision |
| WO2022107140A1 (en) * | 2020-11-18 | 2022-05-27 | Lumus Ltd. | Optical-based validation of orientations of surfaces |
-
2012
- 2012-08-03 CN CN 201220382766 patent/CN202757593U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798357A (en) * | 2012-08-03 | 2012-11-28 | 福州华友光学仪器有限公司 | Device and method for double-barrelled angle measurement |
| CN102798357B (en) * | 2012-08-03 | 2015-03-25 | 福州华友光学仪器有限公司 | Method for double-barrelled angle measurement |
| CN108955580A (en) * | 2018-08-27 | 2018-12-07 | 中山大学 | A kind of method of the outer vertical angle measurement of high-precision |
| WO2022107140A1 (en) * | 2020-11-18 | 2022-05-27 | Lumus Ltd. | Optical-based validation of orientations of surfaces |
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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: 20130227 Termination date: 20130803 |