CN217005728U - Device for testing parallelism and verticality of YAG (yttrium aluminum garnet) rod - Google Patents
Device for testing parallelism and verticality of YAG (yttrium aluminum garnet) rod Download PDFInfo
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- CN217005728U CN217005728U CN202220706792.4U CN202220706792U CN217005728U CN 217005728 U CN217005728 U CN 217005728U CN 202220706792 U CN202220706792 U CN 202220706792U CN 217005728 U CN217005728 U CN 217005728U
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Abstract
The utility model discloses a device for testing the parallelism and the verticality of a YAG rod, which comprises a high-precision reference platform, an optical autocollimator, a rotating mechanism, a jig and a twisting mechanism, wherein the optical autocollimator is arranged on the high-precision reference platform; the rotating mechanism is arranged on the high-precision reference platform, the optical autocollimator is fixed on the rotating mechanism, and the rotating mechanism can drive the optical autocollimator to switch between a horizontal state and a vertical state and lock the position; a CCD camera of the optical autocollimator is connected to the computer host; the jig is also arranged on the high-precision reference platform and comprises a supporting plate, and two cylinders are arranged on the side surface of the supporting plate; the twisting mechanism is also arranged on the high-precision reference platform and is used for twisting the YAG rod on the jig to drive the YAG rod to rotate. The utility model has reasonable design, low cost and high efficiency, replaces manual rubbing by mechanical automatic motion, replaces manual visual reading by CCD data acquisition and result calculation, and can finish the test of two indexes of parallelism and verticality by the same test device.
Description
Technical Field
The utility model relates to the field of detection devices, in particular to a device for testing the parallelism and the perpendicularity of a YAG rod.
Background
YAG is an yttrium aluminum garnet (yttrium aluminum garnet) material for short, is an artificial compound, has a garnet structure and excellent comprehensive performance, and is an important material of a solid laser. The rod-shaped products processed by YAG are commonly called YAG rods, laser rods and the like, are mainly assembled with a pumping light source, a light-gathering cavity and a resonant cavity to form a laser to generate laser beams, and are widely applied to the fields of military, industry, medical treatment and the like. YAG rod is usually processed into cylinder with outer diameter of 1-20 mm and length of 15-200 mm, and the two ends are polished into optical plane and parallel to each other and have parallelism requirement of second-class precision and perpendicularity requirement to the side wall of the cylinder.
At present, the parallelism and the perpendicularity of the YAG bar are generally tested in two times by using two different devices respectively. The parallelism index is usually obtained by testing the reflected light of two light-passing surfaces of a laser interferometer, the verticality index is relatively complicated, a contrast goniometer is usually used for placing a YAG rod on a V-shaped groove and manually rubbing the side wall of the cylinder, and the scale value of a reticle is observed by naked eyes so as to read the scale value.
The above-mentioned common testing method needs to be divided into two times and two different devices, and needs manual operations such as manual rubbing and visual reading, and has the disadvantages of high cost, low efficiency, easy error and the like.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model aims to provide a device for testing the parallelism and the perpendicularity of a YAG rod, which can test two indexes of the parallelism and the perpendicularity on one testing device.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a device for testing the parallelism and the verticality of a YAG rod comprises a high-precision reference platform, an optical autocollimator, a rotating mechanism, a jig and a twisting mechanism;
the rotating mechanism is arranged on the high-precision reference platform, the optical autocollimator is fixed on the rotating mechanism, and the rotating mechanism can drive the optical autocollimator to switch between a horizontal state and a vertical state and lock the position;
the CCD camera of the optical autocollimator is connected to the computing host, and data acquired by the CCD camera is transmitted to the computing host;
the jig is also arranged on the high-precision reference platform and comprises a supporting plate, two cylinders are arranged on the side surface of the supporting plate, and an area capable of supporting the YAG rod is formed between the two cylinders;
furthermore, a V-shaped opening is formed in the supporting plate, and when the YAG rod is arranged between the two cylinders, the YAG rod extends to the V-shaped opening.
Furthermore, the jig further comprises a one-dimensional linear platform arranged on the high-precision reference platform, and the supporting plate is connected to the one-dimensional linear platform.
The twisting mechanism is also arranged on the high-precision reference platform and is used for twisting the YAG rod on the jig to drive the YAG rod to rotate.
Furthermore, the rubbing mechanism comprises a supporting seat and a rubbing rod, a stepping motor and a guide block are fixed on the supporting seat, a guide rail is connected on the guide block in a sliding manner, a rack arranged in parallel with the guide rail is fixed on the guide rail, a gear is fixed on an output shaft of the stepping motor, and the gear is in transmission engagement with the rack; the rubbing rod is fixedly connected to the end part of the rack or the guide rail and points to the jig.
Furthermore, the end of the rotating mechanism is connected with a two-dimensional adjusting frame, and the optical autocollimator is connected to the two-dimensional adjusting frame.
By adopting the technical scheme, the utility model has the advantages of reasonable design, low cost and high efficiency, replaces manual twisting by mechanical automatic motion, replaces manual visual reading by CCD (charge coupled device) data acquisition and result calculation, and can finish the test of two indexes of parallelism and perpendicularity by the same test device.
Drawings
The utility model is described in further detail below with reference to the accompanying drawings and the detailed description;
FIG. 1 is a schematic view of the present invention in a horizontal position;
FIG. 2 is a schematic view of the present invention in a vertical position.
Detailed Description
Referring to fig. 1-2, the utility model relates to a device for testing the parallelism and perpendicularity of a YAG rod, which comprises a high-precision reference platform 1, an optical self-collimator 2, a rotating mechanism 3, a jig 4 and a twisting mechanism 5;
the rotating mechanism 3 is arranged on the high-precision reference platform 1, the optical autocollimator 2 is fixed on the rotating mechanism 3, and the rotating mechanism 3 can drive the optical autocollimator 2 to switch between a horizontal state and a vertical state and lock the position;
the CCD camera of the optical autocollimator 2 is connected to the calculation host, and data acquired by the CCD camera is transmitted to the calculation host;
the jig 4 is also arranged on the high-precision reference platform 1, the jig 4 comprises a support plate 41, two cylinders 42 are arranged on the side surface of the support plate 41, and an area capable of supporting the YAG rod is formed between the two cylinders 42; furthermore, a V-shaped opening is formed in the supporting plate 41, and when the YAG rod 7 is placed between the two cylinders 42, the YAG rod 7 extends to the V-shaped opening;
the twisting mechanism 5 is also arranged on the high-precision reference platform 1 and is used for twisting the YAG rod 7 on the jig 4 to drive the YAG rod 7 to rotate, specifically. The twisting mechanism 5 comprises a supporting seat 51 and a twisting rod 52, a stepping motor 53 and a guide block 54 are fixed on the supporting seat 51, a guide rail 55 is connected on the guide block 54 in a sliding manner, a rack 56 arranged in parallel with the guide rail 55 is fixed on the guide rail 55, a gear 57 is fixed on an output shaft of the stepping motor 53, and the gear 57 is engaged with the rack 56 in a transmission manner; the rubbing rod 52 is fixedly connected to the end of the rack 56 or the guide rail 55, and the rubbing rod 52 points to the jig 4.
Preferably, the jig 4 further comprises a one-dimensional linear platform 43 arranged on the high-precision reference platform 1, and the support plate 41 is connected to the one-dimensional linear platform 43. The testing device can be adapted to YAG rods 7 with different outer diameter sizes through fine adjustment of the one-dimensional linear platform 43. Further, a two-dimensional adjustment frame 6 is connected to an end of the rotation mechanism 3, and the optical autocollimator 2 is connected to the two-dimensional adjustment frame 6. The position of the optical autocollimator 2 can also be adjusted by the two-dimensional adjusting mount 6 to improve the measurement accuracy.
In addition, the optical autocollimator 2, the rotating mechanism 3, the one-dimensional linear platform 43 and the two-dimensional adjusting frame 6 involved in the utility model are all the prior art, and the specific structure and principle are not described in detail.
The working principle of the utility model is as follows: because this testing arrangement has been equipped with rotary mechanism 3, can switch over horizontal (horizontal state), vertical (vertical state) two kinds of measuring methods, the measurement of the horizontal straightness that carries on, the vertical parallelism that carries on.
As shown in fig. 1, measurement of perpendicularity: when the testing device is switched to be horizontal, the optical autocollimator 2 emits collimated light beams to the area where the YAG rod 7 is to be placed, two cylinders 42 are arranged in the area where the YAG rod is to be placed, the YAG rod 7 is horizontally placed on the two cylinders 42, and the collimated light beams of the optical autocollimator 2 irradiate the circular end face of the YAG rod 7 and form a reflection light path. At this time, the stepping motor 53 is used as a power source, the gear rack 56 and the guide rail 55 slide block are used as a transmission mechanism, the YAG rod 7 is automatically twisted, the verticality is not ideal 90 degrees in the twisting process, a small-angle deviation can be formed in a reflection light path in the twisting rotation process (if the verticality between the circular end surface and the cylindrical surface of the YAG rod 7 is ideal, a reflection light spot is always a circular point in the twisting process, if the verticality is not ideal, an arc can be formed along with the twisting process, the verticality can be calculated according to the deviation amount of the arc and the central point, because of two end surfaces, if the other end surface is particularly required to be measured in some occasions, the YAG rod 7 is reversed and the same step measurement is repeated, the optical autocollimator 2 can capture and display weak reverse reflection light due to the high sensitivity of a high-quality CCD detector, so that the small-angle deviation measurement is realized, and is connected to a calculation host through a USB interface of a CCD camera, and calculating the verticality result in the calculating host.
As shown in fig. 2, measurement of parallelism: when the testing device is switched to be vertical, one circular end face of a YAG rod 7 is vertically placed on a high-precision reference platform 1 (at the moment, the YAG rod 7 is placed in the field range of an optical autocollimator 2, the bottom circular end face of the YAG rod 7 is in contact with the high-precision reference platform 1 and is used as a reference face (the reference face is detected in advance and the reflection image of the reference face is acquired), the collimated light beam of the optical autocollimator 2 irradiates the top circular end face of the YAG rod and generates a reflection light path to return to a CCD of the autocollimator, the CCD captures and displays weak reflection light, small-angle deviation is measured, the small-angle deviation is connected to a computing host through a USB interface of a CCD camera, and the parallelism result is computed in the computing host.
While the utility model has been described in connection with the above embodiments, it is to be understood that the utility model is not limited to the disclosed embodiments, which are illustrative and not restrictive, and that those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being covered by the appended claims and their equivalents.
Claims (5)
1. The utility model provides a YAG stick's depth of parallelism and straightness testing arrangement that hangs down which characterized in that: the device comprises a high-precision reference platform, an optical self-calibration instrument, a rotating mechanism, a jig and a twisting mechanism;
the rotating mechanism is arranged on the high-precision reference platform, the optical autocollimator is fixed on the rotating mechanism, and the rotating mechanism can drive the optical autocollimator to switch between a horizontal state and a vertical state and lock the position;
the CCD camera of the optical autocollimator is connected to the computing host, and data acquired by the CCD camera is transmitted to the computing host;
the jig is also arranged on the high-precision reference platform and comprises a supporting plate, two cylinders are arranged on the side surface of the supporting plate, and an area capable of supporting the YAG rod is formed between the two cylinders;
the twisting mechanism is also arranged on the high-precision reference platform and is used for twisting the YAG rod on the jig to drive the YAG rod to rotate.
2. The device for testing the parallelism and the perpendicularity of the YAG rod as claimed in claim 1, wherein: the rubbing mechanism comprises a supporting seat and a rubbing rod, a stepping motor and a guide block are fixed on the supporting seat, a guide rail is connected on the guide block in a sliding manner, a rack arranged in parallel with the guide rail is fixed on the guide rail, a gear is fixed on an output shaft of the stepping motor, and the gear is in transmission engagement with the rack; the rubbing rod is fixedly connected to the end part of the rack or the guide rail and points to the jig.
3. The device for testing the parallelism and the perpendicularity of the YAG rod as claimed in claim 1, wherein: the supporting plate is provided with a V-shaped opening, and when the YAG rod is arranged between the two cylinders, the YAG rod extends to the V-shaped opening.
4. The device for testing the parallelism and the perpendicularity of the YAG rod according to claim 1, characterized in that: the jig further comprises a one-dimensional linear platform arranged on the high-precision reference platform, and the supporting plate is connected to the one-dimensional linear platform.
5. The device for testing the parallelism and the perpendicularity of the YAG rod as claimed in claim 1, wherein: the end part of the rotating mechanism is connected with a two-dimensional adjusting frame, and the optical autocollimator is connected to the two-dimensional adjusting frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220706792.4U CN217005728U (en) | 2022-03-24 | 2022-03-24 | Device for testing parallelism and verticality of YAG (yttrium aluminum garnet) rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220706792.4U CN217005728U (en) | 2022-03-24 | 2022-03-24 | Device for testing parallelism and verticality of YAG (yttrium aluminum garnet) rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217005728U true CN217005728U (en) | 2022-07-19 |
Family
ID=82371848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220706792.4U Active CN217005728U (en) | 2022-03-24 | 2022-03-24 | Device for testing parallelism and verticality of YAG (yttrium aluminum garnet) rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217005728U (en) |
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2022
- 2022-03-24 CN CN202220706792.4U patent/CN217005728U/en active Active
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