CN110908061A - Quick precision positioning fixed mirror holder - Google Patents
Quick precision positioning fixed mirror holder Download PDFInfo
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- CN110908061A CN110908061A CN201911181279.7A CN201911181279A CN110908061A CN 110908061 A CN110908061 A CN 110908061A CN 201911181279 A CN201911181279 A CN 201911181279A CN 110908061 A CN110908061 A CN 110908061A
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- pin
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- pin hole
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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Abstract
The invention belongs to the technical field of precision optical instruments, and particularly relates to a novel rapid precision positioning fixed frame for fixing optical lenses. The glasses frame comprises a glasses frame body and a base, and further comprises a positioning pin screw, wherein a pin section is arranged on the lower side of a screw cap of the positioning pin screw, and a thread section is arranged on the lower side of the pin section; the diameter of the pin section is larger than that of the thread section; a technical tool withdrawal groove is also arranged between the pin column section and the thread section; the base is provided with a first pin hole, a second pin hole and a screw through hole which are arranged in a triangular shape; the installation positioning operation is simpler, the installation debugging efficiency is greatly improved, the complete constraint positioning of the optical element is effectively realized, the over-constraint problem is effectively avoided, and the installation fixing precision of the mirror bracket is obviously improved.
Description
Technical Field
The invention belongs to the technical field of precision optical instruments, and particularly relates to a quick precision positioning fixed frame for fixing optical lenses.
Background
Optical lenses are widely used in the field of laser engineering, and at present, the installation and clamping of the lenses are mostly realized by adopting a standard two-dimensional adjusting mirror bracket or a fixing bracket containing an elastic element. The standard two-dimensional adjusting mirror bracket containing an elastic element is complex to adjust, and cannot meet the stability requirement of a precision optical system in complex vibration impact use environments (such as working conditions of an airborne system, a vehicle-mounted system, a ship-mounted system and the like) and the long-term use stability requirement in a laboratory environment.
Although the existing fixing support can stably support the lens for a long time, the base of the fixing support is fixed by matching screw through holes with screws, the random variation range of the installation position and the angle of the fixing support is large, and the requirements of a precise optical system on the position and the angle precision of the optical lens cannot be met. The rapid and precise positioning can not be realized, and the position and the angle of the mirror bracket need to be repeatedly installed and debugged in the use process. After repeated installation and debugging, the position and the angle of the mirror bracket are finally adjusted to the required position and angle, and the position and the angle of the mirror bracket are likely to change due to the tangential friction force of the screw head in the process of screwing and fixing the screw, so that the final state can not meet the requirements of a precision optical system on the position and the angle precision of the optical lens.
At present, a base of a fixed support adopts one-dimensional large plane positioning, due to flatness processing deviation, the whole bottom surface cannot be completely attached to a mounting table surface of a mirror bracket, three-point contact positioning is realized between two actual surfaces, and due to randomness of the processing deviation, the contact points cause random deviation of the height and the pitching angle of a final optical lens, and the requirements of a precision optical system on the height position and the pitching angle precision of the optical lens cannot be met.
Disclosure of Invention
The invention provides a novel fixed mirror bracket capable of being positioned quickly and precisely, and solves the technical problems that the conventional fixed mirror bracket cannot be positioned quickly and precisely and is poor in positioning precision.
In order to achieve the purpose, the specific technical scheme of the invention is as follows: a fixed mirror bracket capable of being rapidly and precisely positioned comprises a mirror bracket body, a base and a positioning pin screw, wherein a pin section is arranged on the lower side of a nut of the positioning pin screw, and a thread section is arranged on the lower side of the pin section; the diameter of the pin section is larger than that of the thread section; the base is provided with a first pin hole, a second pin hole and a screw through hole which are arranged in a triangular shape; the first pin hole is in precise fit with the positioning pin screw; the second pin hole is a long-strip-shaped pin hole and is in transverse precise fit with the positioning pin screw; the screw through hole is in free clearance fit with the screw; the long axis direction of the second pin hole is in the same line with the center of the first pin hole.
Further, the first pin hole is matched with the positioning pin screw, and is used for determining the position of the rotating shaft of the mirror bracket and limiting the translation of the mirror bracket; the second pin hole is matched with a positioning pin screw and used for precisely determining the horizontal working angle posture of the mirror bracket; the screw through hole is matched with the screw and used for finishing the final three-point fixation of the mirror bracket.
Further, the first pin hole and the second pin hole are arranged on the base at the front part of the spectacle frame body; the screw via hole sets up on the base at the rear portion of mirror holder body.
Furthermore, the tolerance of the aperture of the first pin hole is a basic hole system H, and the tolerance of the width of the second pin hole is the basic hole system H.
Furthermore, optical lenses are fixed in the middle of the frame body, and optical lens fastening screws are arranged at the top of the frame body.
Furthermore, a technical tool withdrawal groove is arranged between the pin column section and the thread section.
And the bottoms of the first pin hole, the second pin hole and the screw through hole are provided with support bosses protruding downwards.
Has the advantages that: according to the invention, the fixing hole on the base of the mirror bracket is designed into the shape of a long hole which is precisely matched with the positioning pin screw, the second pin hole is designed into the shape of a long hole which is precisely matched with the positioning pin screw in the transverse direction, the third fixing hole is designed into the shape of a screw through hole, and a section of pin shaft section is added by improving a common screw, so that the fixing combination of the mirror bracket and the mounting platform is realized by precisely matching the pin shaft section with each positioning hole on the base, the screw fixing in the prior art is effectively avoided, the phenomenon of dislocation and displacement is inevitably generated in the fastening process of the screw, and the final mounting state cannot meet the requirements of a precise optical system on the position and angle precision of an optical lens; the installation and fixation operation is simpler, the precision is higher, the installation and debugging efficiency is greatly improved, the complete constraint and positioning of the optical element are effectively realized, and the over-constraint problem is effectively avoided; in addition, through the design of 2 positioning pin screws and 1 common screw which are positioned at three points and the downward protruding supporting boss, the positioning constraint of the spectacle frame instrument on six degrees of freedom can be realized only by precisely processing and controlling the small-range table height, levelness and flatness around the positioning screw hole of the optical platform, and the mounting platform has lower manufacturing requirement and lower cost compared with the whole precisely processed mounting platform; the locating pin screw compares ordinary pin, and it is all more convenient to install and dismantle, and compares ordinary screw, and the location is more accurate, has possessed the function that compresses tightly of screw simultaneously, has also possessed the accurate positioning function of pin.
Drawings
Fig. 1 is a bottom perspective view of the present invention.
Fig. 2 is a top perspective view of the present invention.
FIG. 3 is a schematic view of the construction of the dowel screw of the present invention.
Fig. 4 is a top view of the frame of the present invention.
Fig. 5 is a front cross-sectional view of the frame.
Fig. 6 is a side cross-sectional view of the frame.
Description of reference numerals: 1. a frame body; 2. a base; 3. a first pin hole; 4. a second pin hole; 5. a screw passing hole; 6. tightening the screw; 7. a dowel pin screw; 7.1, screw cap; 7.2, a pin section; 7.3, a technical tool withdrawal groove; 7.4, a thread section; 8. an optical lens; 9. a screw; 10. and supporting the boss.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, specific embodiments thereof are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention can be embodied in many different forms than those herein described and many modifications may be made by one skilled in the art without departing from the spirit and scope of the invention.
Referring to fig. 1-6, the fast and precise positioning fixed mirror bracket comprises a mirror bracket body 1 and a base 2, wherein the mirror bracket body 1 and the base 2 are integrally processed, the fast and precise positioning fixed mirror bracket further comprises a positioning pin screw 7, a pin section 7.2 is arranged on the lower side of a nut 7.1 of the positioning pin screw 7, and a thread section 7.4 is arranged on the lower side of the pin section 7.2; the pin section 7.2 is larger in diameter than the threaded section 7.4, the pin section 7.4 preferably having a diameter with a tolerance rating of h 7. A technical tool withdrawal groove 7.3 is also arranged between the pin column section 7.2 and the thread section 7.4. The base 2 is provided with a first pin hole 3, a second pin hole 4 and a screw through hole 5 which are arranged in a triangular shape. The three holes may be all provided on the base 2 at the front of the frame body 1, or may be provided on the base 2 at the rear of the frame body 1. In order to ensure that the lens bracket has better fixing effect and is more convenient and faster to operate, the first pin hole 3 and the second pin hole 4 are preferably arranged on the base 2 at the front part of the lens bracket body 1; the screw through hole 5 is provided on the base 2 at the rear of the mirror holder body 1. The first pin hole 3 and the positioning pin screw 7 are in precise fit, and the preferential tolerance grade of the aperture of the first pin hole 3 is H8, namely the inner diameter of the first pin hole 3 and the outer diameter of the pin column section 7.4 on the positioning pin screw 7 are required to be in precise fit. The second pin hole 4 is an elongated pin hole and is closely fitted with the positioning pin screw 7 in the transverse direction, and the width of the second pin hole 4 is preferably in the tolerance class H8, that is, the positioning pin screw 7 is closely fitted in the transverse direction of the second pin hole 4 after being inserted into the second pin hole 4, and the second pin hole 4 is appropriately adjusted in the longitudinal direction. The screw through hole 5 is in free clearance fit with the screw 9, namely the common tolerance grade is adopted; the long axis direction of the second pin hole 4 is aligned with the center of the first pin hole 3. The bottom of the first pin hole 3, the second pin hole 4 and the screw through hole 5 is provided with a support boss 10 protruding downwards.
The first pin hole 3 is matched with a positioning pin screw 7 and used for determining the position of a rotating shaft of the mirror bracket and limiting the translation of the mirror bracket; the second pin hole 4 is matched with a positioning pin screw 7 and used for precisely determining the horizontal working angle posture of the lens bracket, and the angle of the connecting line of the first pin hole 3 and the second pin hole 4 on the optical platform is the horizontal working angle posture of the optical element and is ensured by the processing precision; the screw through hole 5 is in free clearance fit with the screw 9, so that the lens bracket is fixed on the screw through hole 5 for mounting the optical platform, and the pitch angle attitude of the lens bracket is precisely determined. Through the design of the technical scheme, the constraint positioning of the mirror bracket with six degrees of freedom is realized, over-constraint does not exist, the placing is realized, and the assembling and adjusting efficiency is greatly improved.
In order to better realize the fixation and positioning of the optical lens, the optical lens 8 is fixed in the middle of the frame body 1, and the top of the frame body is provided with an optical lens fastening screw 6 for fixing the optical lens 8 in the optical lens installation process.
According to the invention, the fixing hole on the base 2 of the mirror bracket is designed into the first pin hole 3 to be precisely matched with the positioning pin screw 7, the second pin hole 4 is designed into a long hole shape to be transversely matched with the positioning pin screw 7, the third fixing hole is designed into the screw through hole 5, and the positioning pin screw 7 is improved, so that the positioning pin screw is added with a pin shaft section 7.2, and the pin shaft section 7.2 is precisely matched with each positioning hole on the base 2, so that the fixed combination of the mirror bracket 1 and the mounting platform is realized, the placing effect is realized, the phenomenon of dislocation and displacement caused by inevitable screw fastening in the screw fixing process in the prior art is effectively avoided, and the final mounting state can not meet the requirements of a precise optical system on the position and angle precision of an optical lens; the installation and fixation operation is simpler, the precision is higher, the installation and debugging efficiency is greatly improved, the complete constraint and positioning of the optical element are effectively realized, and the over-constraint problem is effectively avoided; through the design of 2 positioning pin screws and 1 common screw which are positioned at three points and the downward protruding supporting boss 10, the positioning constraint of the spectacle frame instrument on six degrees of freedom can be realized only by precisely processing and controlling the small-range table height, levelness and flatness around the positioning screw hole of the optical platform, and the mounting platform has lower manufacturing requirement and lower cost relative to the whole precisely processed mounting platform; the locating pin screw compares ordinary pin, and it is all more convenient to install and dismantle, and compares ordinary screw, and the location is more accurate, has possessed the function that compresses tightly of screw simultaneously, has also possessed the accurate positioning function of pin.
The working principle and the working process are as follows: in the working process, the mirror bracket is firstly placed on the optical platform, then the first pin hole 3 is aligned with the mounting threaded hole 1 'corresponding to the first pin hole 3 on the optical platform (the horizontal position precision of the positioning threaded hole 1' of the optical platform needs to be strictly controlled and is ensured by the processing precision), then the dowel screw 7 is put into the first pin hole 3, the nut of the dowel screw 7 is clamped at the upper part in the first pin hole 3, the pin column section 7.2 is clamped in the precise pin hole part at the lower part in the first pin hole 3, because the positioning pin screw 7 and the optical platform are precisely matched, the positioning pin screw 7 is precisely matched and connected with the lens frame, then the positioning pin screw 7 is screwed to realize a semi-fastening state with a corresponding mounting threaded hole of the optical platform, so that the mirror bracket can only rotate by taking the positioning pin screw 7 in the first pin hole 3 as a rotating shaft, thereby limiting the translation of the mirror bracket in three directions; then, the second pin hole 4 on the base 2 of the lens bracket is rotated to the position of a mounting threaded hole 2 ' corresponding to the second pin hole 4 on the optical platform (the angle of the connecting line of the positioning screw hole 2 ' of the optical platform and the positioning screw hole 1 ' is the horizontal working angle attitude of the optical element, needs to be strictly controlled and is ensured by the processing precision), then another positioning pin screw 7 is inserted into the second pin hole 4 and moves along the length direction of the second pin hole 4 until the connecting line can correspond to the corresponding mounting threaded hole 2 ' on the optical platform for determining the horizontal angle attitude of the lens bracket, and then the positioning pin screw 7 in the second pin hole 4 is screwed to enable the positioning pin screw 7 and the fixed mounting threaded hole 2 ' of the optical platform to realize a semi-fastening state; and then, a screw 9 penetrates through a screw through hole 5, then the screw 9 is half-fixed in a mounting threaded hole 3' of the optical platform corresponding to the screw through hole 5, the screw 9 and the screw through hole 5 are in free clearance fit, the height, the flatness and the levelness of a small-range table top near three positioning screw holes on the optical platform need to be strictly controlled and are ensured by the processing precision, a supporting boss 10 is further arranged at the lower part of the mirror bracket base 2, the supporting boss 10 at the bottom surface of the mirror bracket base 2 is matched with a fine machining plane near the positioning screw holes of the optical platform to realize three-point compression, the adjustment and the fixation of the pitching angle posture of the mirror bracket are further realized, finally, a positioning pin 7 in a first pin hole 3, a positioning pin 7 and a screw 9 in a second pin hole 4 are sequentially screwed.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a fixed mirror holder of quick precision positioning, includes mirror holder body (1) and base (2), its characterized in that: the positioning pin bolt comprises a positioning pin bolt (7), wherein a pin section (7.2) is arranged on the lower side of a nut (7.1) of the positioning pin bolt (7), and a thread section (7.4) is arranged on the lower side of the pin section (7.2); the diameter of the pin section (7.2) is larger than that of the threaded section (7.4); the base (2) is provided with a first pin hole (3), a second pin hole (4) and a screw through hole (5) which are arranged in a triangular shape; the first pin hole (3) is in precise fit with the positioning pin screw (7); the second pin hole (4) is a long strip-shaped pin hole and is in transverse precise fit with the positioning pin screw (7); the screw through hole (5) is in free clearance fit with the screw (9); the long axis direction of the second pin hole (4) and the center of the first pin hole (3) are on the same straight line.
2. A fast fine positioning fixed frame as claimed in claim 1, wherein: the first pin hole (3) is matched with a positioning pin screw (7) and used for determining the position of a rotating shaft of the mirror bracket and limiting the translation of the mirror bracket; the second pin hole (4) is matched with a positioning pin screw (7) and used for precisely determining the horizontal working angle posture of the spectacle frame; the screw through hole (5) is matched with the screw (9) and used for finishing the final three-point fixation of the mirror bracket.
3. A fast fine positioning fixed frame as claimed in claim 1, wherein: the first pin hole (3) and the second pin hole (4) are arranged on the base (2) at the front part of the spectacle frame body (1); the screw through hole (5) is arranged on the base (2) at the rear part of the mirror bracket body (1).
4. A fast fine positioning fixed frame as claimed in claim 1, wherein: the tolerance of the aperture of the first pin hole (3) is a basic hole system H, and the tolerance of the width of the second pin hole (4) is a basic hole system H.
5. A fast fine positioning fixed frame according to any of claims 1 to 4, wherein: an optical lens (8) is fixed in the middle of the spectacle frame body (1), and an optical lens fastening screw (6) is arranged at the top of the spectacle frame body.
6. A fast fine positioning fixed frame according to any of claims 1 to 4, wherein: a technical tool withdrawal groove (7.3) is also arranged between the pin column section (7.2) and the thread section (7.4).
7. A fast fine positioning fixed frame according to any of claims 1 to 4, wherein: and the bottoms of the first pin hole (3), the second pin hole (4) and the screw through hole (5) are provided with support bosses protruding downwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911181279.7A CN110908061A (en) | 2019-11-27 | 2019-11-27 | Quick precision positioning fixed mirror holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911181279.7A CN110908061A (en) | 2019-11-27 | 2019-11-27 | Quick precision positioning fixed mirror holder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110908061A true CN110908061A (en) | 2020-03-24 |
Family
ID=69819827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911181279.7A Pending CN110908061A (en) | 2019-11-27 | 2019-11-27 | Quick precision positioning fixed mirror holder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110908061A (en) |
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2019
- 2019-11-27 CN CN201911181279.7A patent/CN110908061A/en active Pending
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