CN116299953A - Large-caliber high-precision plane mirror supporting and adjusting device - Google Patents
Large-caliber high-precision plane mirror supporting and adjusting device Download PDFInfo
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- CN116299953A CN116299953A CN202310288755.5A CN202310288755A CN116299953A CN 116299953 A CN116299953 A CN 116299953A CN 202310288755 A CN202310288755 A CN 202310288755A CN 116299953 A CN116299953 A CN 116299953A
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- 230000007246 mechanism Effects 0.000 claims abstract description 50
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 238000003825 pressing Methods 0.000 claims description 7
- 239000004429 Calibre Substances 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims 1
- 239000011295 pitch Substances 0.000 description 14
- 230000005540 biological transmission Effects 0.000 description 5
- 238000013519 translation Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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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
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
- G02B7/183—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors specially adapted for very large mirrors, e.g. for astronomy, or solar concentrators
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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
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
- G02B7/198—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors with means for adjusting the mirror relative to its support
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/47—Mountings or tracking
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- Optics & Photonics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Astronomy & Astrophysics (AREA)
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- Transmission Devices (AREA)
Abstract
The invention discloses a large-caliber high-precision plane mirror supporting and adjusting device which comprises a mirror chamber mechanism, a fork arm and a pitching adjusting mechanism, wherein the mirror chamber mechanism can be installed on the fork arm in an up-down rotating mode, the pitching adjusting mechanism comprises a rack seat nut, a gear and a pitching shifting plate, a rack is arranged on the outer side of a screw part of the rack seat nut, the gear is meshed with the rack, a screw rod penetrates through the rack seat nut, a first thread section and a second thread section on the screw rod are identical in thread spiral direction and different in lead, the pitching shifting plate is installed on the second thread section in a matched mode, the first thread section of the screw rod is installed in the head of the rack seat nut in a matched mode, and the end part of the pitching shifting plate is movably limited in a first strip-shaped hole of the mirror chamber mechanism. The invention can effectively improve the adjusting efficiency of the large-caliber high-precision plane mirror, enlarge the pitching adjusting range, control the adjusting quantity in real time, improve the adjusting precision and quickly adjust the pitching and azimuth angle of the plane mirror.
Description
Technical Field
The invention belongs to the field of optical detection, and particularly relates to a large-caliber high-precision plane mirror supporting and adjusting device.
Background
With the rapid development of science and technology, large-caliber optical systems are increasingly widely applied in the fields of space optics, astronomical optics and the like. The large-caliber plane mirror is often used as a standard instrument for auto-collimation detection of an optical system of the astronomical telescope, the requirement on imaging quality of the astronomical telescope with large caliber and large field of view is high, the field of view is large, the plane mirror is required to have multi-angle, large-range and high-precision adjustable functions during system installation and adjustment, the adjustment quantity of the optical axis of the plane mirror in the adjustment process is required to be accurately controllable, and the adjustment precision of the plane mirror is required to be ensured to be unchanged during multi-azimuth adjustment.
The existing large-caliber plane mirror supporting and adjusting mechanism generally adopts a sling supporting structure, and the inclination angle and the pitch angle of the plane mirror are adjusted through a jacking and pulling mechanism, so that the adjusting mode can be electrically adjusted, and also can be manually adjusted. The adjusting mechanism is slow in adjustment, small in adjusting range, not capable of being quantitatively controlled in the adjusting process, low in adjusting precision, easy to damage by an electric adjusting motor and limited in use environment.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides a large-caliber high-precision plane mirror supporting and adjusting device.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a heavy-calibre high-precision plane mirror supports adjusting device, includes mirror room mechanism, yoke and every single move adjustment mechanism, mirror room mechanism is rotationally installed on the yoke from top to bottom, every single move adjustment mechanism includes rack seat nut, gear, every single move shifting plate, rack seat nut includes head and screw portion, the outside of screw portion is provided with the rack, the gear passes through the gear shaft and installs on the yoke and the gear with the rack meshing, gear shaft is connected with coarse tuning rotating member, link up in the rack seat nut has the screw rod, the one end of screw rod stretches out from the head of rack seat nut and is connected with fine tuning rotating member, be provided with first screw thread section and second screw thread section on the screw rod, wherein first screw thread section links to each other with fine tuning rotating member, the screw thread spiral direction of first screw thread section and second screw thread section is the same, the helical pitch is different, every single move shifting plate screw thread fit is installed in the second screw thread section of screw rod, the first screw thread section screw thread fit of screw rod is installed in the head of seat nut, mirror room mechanism is provided with first hole, the tip that every single move shifting plate is located the first bar shape hole.
Further, the device also comprises a base and an azimuth adjusting mechanism, wherein the fork arm is arranged on the base in a left-right rotating way through an azimuth rotating shaft, and the azimuth adjusting mechanism is arranged on the base and has the same structure as that of the pitching adjusting mechanism.
Further, the fine adjustment rotary has a dial.
Furthermore, a key groove is further formed in the outer side of the screw portion of the rack seat nut, an adjusting limiting locking screw is mounted on the fork arm in a threaded fit mode, and the end portion of the adjusting limiting locking screw is limited in the key groove.
Further, the mirror chamber mechanism is connected with the fork arm through an angular contact bearing.
Furthermore, the fork arm is formed by welding channel steel and steel plates, the gear shaft is connected with the outer steel plate of the channel steel through a gear large shaft sleeve and a gear large shaft sleeve pressing ring, and the gear shaft is connected with the inner steel plate of the channel steel through a gear small shaft sleeve.
Compared with the prior art, the invention has the beneficial effects that:
the large-caliber high-precision plane mirror supporting and adjusting device can effectively improve the adjusting efficiency of a large-caliber high-precision plane mirror, enlarge the pitching adjusting range, enable the adjusting quantity to be controllable in real time, improve the adjusting precision, enable the pitching and azimuth angles of the plane mirror to be quickly adjusted, enable the pitching angle adjusting range to be +/-6 degrees, enable the precision to be 1 ', enable the azimuth angle adjusting range to be +/-5 degrees and enable the precision to be 1.1', and enable the rotating angle to be read in real time.
Drawings
FIG. 1 is a schematic diagram of a large caliber high precision plane mirror support adjustment device;
FIG. 2 is a schematic diagram of a differential screw drive;
FIG. 3 is a front view of a pitch adjustment mechanism;
FIG. 4 is a side view of a pitch adjustment mechanism;
fig. 5 is a three-dimensional view of the pitch adjustment mechanism.
The marks in the figure: 1-a mirror chamber assembly; 2-trunnion; 3-pitch adjustment mechanism; 4-azimuth rotation shaft; 5-azimuth adjusting mechanism; 6-fork arms; 7-a base; 8-a screw; 9-a movable nut; 10-a frame; 101. a first thread segment; 102. a second thread segment; 103. a waist-shaped hole; 201-adjusting a limit locking screw; 202-a gear large shaft sleeve locking screw; 203-gear large shaft sleeve; 204-gear shaft washer one; 205-gear cone gasket two; 206-pressing ring stop nails; 207-a large gear shaft sleeve pressing ring; 208-gear; 209-a cylindrical pin; 210-gear shaft washers; 211-a small gear sleeve locking screw; 212-a gear shaft; 213-gear pinion sleeve; 214-pitching shifting plate; 215-differential screw shaft; 216-pitch translation bar; 217-rack; 218-a rack seat nut; 219-dial; 220-a hand wheel; 221-coarse tuning knob.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
The embodiment provides a supporting and adjusting device for a large-caliber high-precision plane mirror, and particularly relates to an adjusting device for a 850-caliber plane mirror.
As shown in fig. 1, the supporting and adjusting device for the large-caliber high-precision plane mirror of the embodiment mainly comprises a mirror chamber mechanism 1, a fork arm 6, a pitching adjusting mechanism 3, a base 7, an azimuth adjusting mechanism 5, a base 7 and an azimuth adjusting mechanism 5. The mirror chamber of the mirror chamber mechanism 1 is mounted on the fork arm 6 through the trunnion 2 and is connected through an angular contact bearing, so that the mirror chamber mechanism 1 can rotate up and down (namely, mirror chamber pitching adjustment) by taking a transverse x axis as a rotating shaft. The bottom of the fork arm 6 is mounted on the base 7 through the azimuth rotating shaft 4, so that the mirror chamber mechanism 1 can rotate left and right (namely, mirror chamber rotation adjustment) by taking a longitudinal y axis as a rotating shaft, and the fork arm 6 is mounted on the base 7 in a left and right rotatable manner through the azimuth rotating shaft 4.
The structure of the pitching adjusting mechanism 3 is shown in fig. 3-5, and mainly comprises a rack seat nut 218, a gear 208 and a pitching shifting plate 214. The rack seat nut 218 includes a head portion and a screw portion, a rack 217 is disposed on the outer side of the screw portion, the gear 208 is mounted on the gear shaft 212 through a cylindrical pin 209, the gear shaft 212 is rotatably mounted on the yoke 6, the gear 208 is meshed with the rack 217, the gear shaft 212 is connected with a coarse adjustment knob 221, a screw rod penetrates through the rack seat nut 218, and one end of the screw rod extends out from the head portion of the rack seat nut 218 and is connected with a hand wheel 220.
Wherein, utilize rack and pinion cooperation to realize mirror room every single move rotation angle's coarse adjustment, adjust range + -6.
The fine adjustment of the pitching rotation angle of the mirror chamber is realized by utilizing the differential screw principle, as shown in fig. 2, the screw rod 8 comprises a first screw thread section 101 and a second screw thread section 102, the screw thread screw directions of the first screw thread section 101 and the second screw thread section 102 are the same, the screw rod 8 and the movable nut 9 and the frame 10 form two screw pairs respectively, the first screw thread section 101 and the frame 10 form an I-type common screw pair (one fixed, one rotary and linear), and the second screw thread section 102 and the movable nut 9 form an II-type common screw pair (one rotary, one linear). The two sections of threads on the screw rod 8 are all right-handed threads, the leads are PhA and PhB respectively, the screw rod rotates for one circle according to the rotation direction in fig. 2, the actual distance L1 (=PhA) of the movable nut 9 relative to the frame and the distance L21 (=PhB) of the movable nut 9 relative to the screw rod 8 move rightwards are synthesized, namely: l=l1-l21=n× (PhA-PhB). For example, the pitches are respectively 1 inch 24 threads (pha=1.058 mm) and the common pitch phb=1 mm of english threads, and one rotation is n=1, l=n× (PhA-PhB) =0.058 mm; assuming that the radius R of the swing rod is equal to 200mm, the rotating hand wheel is 160mm, the swing rod moves 0.058mm when the hand wheel rotates for one circle, when the hand wheel rotates for 6 degrees, the swing rod moves 6/360X0.058 = 0.00097mm, and the accuracy of the adjusting angle of the mirror chamber is arctg (0.00097/200) =1'.
In this embodiment, as shown in fig. 3-5, the screw 8 specifically includes a driving screw shaft 215, a pitch translation rod 216 (i.e. a second threaded section), and a first threaded section that is screwed and mounted in the head of the rack seat nut 218, where the first threaded section is connected to a hand wheel 220, the pitch dial 214 is screwed and mounted on the pitch translation rod 216, the mirror chamber mechanism 1 is provided with a waist-shaped hole 103, and the end of the pitch dial 214 is movably limited in the waist-shaped hole 103.
The azimuth adjusting mechanism 5 is arranged on the base 7, the structure of the azimuth adjusting mechanism is the same as that of the pitching adjusting mechanism, and the specific structure is not repeated, and the difference is mainly that when the azimuth adjusting mechanism 5 is arranged on the base 7, the waist-shaped holes for limiting the shifting plate are arranged on the fork arms 6.
In this embodiment, as shown in fig. 3, the yoke 6 is preferably welded by using a channel steel and a steel plate, and the base is preferably connected to the insert rotation shaft by using a supporting steel plate. The gear shaft 212 is connected with an outer steel plate of the channel steel through a gear large shaft sleeve 203 and a gear large shaft sleeve pressing ring 207, a gear shaft washer I204 and a gear shaft washer II 205 are arranged in the middle, the gear large shaft sleeve 203 is fixed through a gear large shaft sleeve locking screw 202, the gear large shaft sleeve pressing ring 207 is fixed through a pressing ring stop pin 206, the gear shaft 212 is connected with an inner steel plate of the channel steel through a gear small shaft sleeve 213, a gear shaft washer 210 is arranged in the middle, and the gear small shaft sleeve 213 is fixed through a gear small shaft sleeve locking screw 211.
As shown in fig. 4, the hand wheel 220 of the present embodiment has a dial 219, and the rotation angle can be read. Specifically, an angle scribe line is engraved on the hand wheel 220, about 160×3.14×5/360= 6.977mm is 6 °, enough resolution is adjusted manually, the length of the designed swing rod is 300mm, and the accuracy of the adjusting angle of the mirror chamber is arctg (0.00097/300) =0.67″; the adjustment distance is + -20 mm, and the adjustment angle range is about + -16'.
As shown in fig. 5, a key slot 222 is further provided on the outer side of the screw portion of the rack seat nut 218, the adjusting limit locking screw 201 is mounted on the yoke 6 in a threaded fit manner, the end portion of the adjusting limit locking screw 201 is limited in the key slot 222, and the adjusting limit locking screw 201 is locked after adjustment.
The pitch adjustment mechanism is taken as an example of the adjustment process: the gear shaft 212 is rotated to drive the rack seat nut 218 to move linearly and rapidly, thereby achieving the purpose of coarse adjustment. Then, the hand wheel 220 is rotated to make the differential screw shaft 215 and the pitching translation rod 216 move in a differential mode, and the pitching translation rod 216 moves in a straight line in the horizontal waist groove formed in the fork arm 6, so that the pitching shifting rod 214 moves in a precise straight line mode. The pitching shifting lever 214 is connected with the mirror chamber mechanism 1, and is provided with a waist-shaped hole 103 in the vertical direction, so that the pitching movement of the mirror chamber is realized. The rack seat nut 218 is square to the key slot 222, the adjusting limiting locking screw 201 is propped in the key slot 222, and the whole translational movement can be locked by locking.
In summary, the invention provides a large-caliber high-precision plane mirror supporting and adjusting device, which comprises a mirror chamber mechanism, a fork arm pitching adjusting mechanism and a base azimuth adjusting mechanism. The gear rack in the device has large transmission power and high efficiency, the circumferential speed of the gear rack can reach 300m/s, and the transmission power can reach 105kw; in addition, the service life is long, the work is stable, and the reliability is high; can ensure constant transmission ratio and transfer the motion of two shaft parts with arbitrary included angles. The differential screw transmission mechanism has the advantages of simple structure, stable operation, high transmission precision, large bearing capacity, reliable operation, labor saving, no noise and the like.
The above description is only of the preferred embodiments of the present invention, and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a heavy-calibre high-precision plane mirror supports adjusting device, its characterized in that, including mirror room mechanism, yoke and every single move adjustment mechanism, mirror room mechanism is rotationally installed on the yoke from top to bottom, every single move adjustment mechanism includes rack seat nut, gear, every single move shifting plate, rack seat nut includes head and screw portion, the outside of screw portion is provided with the rack, the gear passes through the gear shaft and installs on the yoke and the gear with the rack meshing, gear shaft is connected with coarse tuning rotating member, link up in the rack seat nut has the screw rod, the one end of screw rod stretches out from the head of rack seat nut and is connected with fine tuning rotating member, be provided with first screw thread section and second screw thread section on the screw rod, wherein first screw thread section links to each other with fine tuning rotating member, the screw thread direction of first screw thread section and second screw thread section is the same, the helical pitch shifting plate screw thread fit installs in the second screw thread section of screw rod, the first screw thread section screw fit of screw rod installs in the head of rack seat nut, mirror room mechanism is provided with first hole, the activity limit is located the strip-shaped hole.
2. The device for supporting and adjusting a large-caliber high-precision plane mirror according to claim 1, further comprising a base and an azimuth adjusting mechanism, wherein the fork arm is installed on the base in a manner of being capable of rotating left and right through an azimuth rotating shaft, and the azimuth adjusting mechanism is arranged on the base and has the same structure as that of the pitching adjusting mechanism.
3. The device of claim 1, wherein the fine adjustment rotary member comprises a dial.
4. The large-caliber high-precision plane mirror supporting and adjusting device according to claim 1, wherein a key groove is further formed in the outer side of the screw portion of the rack seat nut, an adjusting limit locking screw is mounted on the fork arm in a threaded fit mode, and the end portion of the adjusting limit locking screw is limited in the key groove.
5. The device of claim 1, wherein the mirror housing mechanism is coupled to the yoke via an angular contact bearing.
6. The large-caliber high-precision plane mirror supporting and adjusting device according to claim 1, wherein the fork arms are formed by welding channel steel and steel plates, the gear shaft is connected with the outer steel plate of the channel steel through a gear large shaft sleeve and a gear large shaft sleeve pressing ring, and the gear shaft is connected with the inner steel plate of the channel steel through a gear small shaft sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310288755.5A CN116299953A (en) | 2023-03-23 | 2023-03-23 | Large-caliber high-precision plane mirror supporting and adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310288755.5A CN116299953A (en) | 2023-03-23 | 2023-03-23 | Large-caliber high-precision plane mirror supporting and adjusting device |
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| Publication Number | Publication Date |
|---|---|
| CN116299953A true CN116299953A (en) | 2023-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310288755.5A Pending CN116299953A (en) | 2023-03-23 | 2023-03-23 | Large-caliber high-precision plane mirror supporting and adjusting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118465963A (en) * | 2024-07-12 | 2024-08-09 | 中国科学院长春光学精密机械与物理研究所 | A plane mirror support structure with adjustable support angle |
-
2023
- 2023-03-23 CN CN202310288755.5A patent/CN116299953A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118465963A (en) * | 2024-07-12 | 2024-08-09 | 中国科学院长春光学精密机械与物理研究所 | A plane mirror support structure with adjustable support angle |
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