CN101963690A - Mechanism for realizing speed-variable focusing of collimator - Google Patents
Mechanism for realizing speed-variable focusing of collimator Download PDFInfo
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- CN101963690A CN101963690A CN201010253648.1A CN201010253648A CN101963690A CN 101963690 A CN101963690 A CN 101963690A CN 201010253648 A CN201010253648 A CN 201010253648A CN 101963690 A CN101963690 A CN 101963690A
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- focusing
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- driving ring
- transmission ring
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Abstract
The invention relates to a mechanism for realizing the speed-variable focusing of a collimator, which comprises a focusing hand wheel, a driving ring, a guide key, a limiting screw, a focusing lens barrel and a focusing lens base, wherein a limiting notch is machined on the driving ring, the internal thread of the driving ring is a single-end ocular thread, the external thread of the driving ring is a four-end ocular thread, the internal thread of the focusing hand wheel is matched with the external thread of the driving ring, the internal thread of the driving ring is matched with the external thread of the guide key, the guide key and the focusing lens base are fixedly connected and form a slide fit with a sliding chute in the focusing lens barrel, and the limiting screw is positioned in the center of the limiting notch and is fixedly connected with the focusing lens base. Because of the arrangement of the driving ring, the guide key and the limiting screw, a small drive ratio can be used for fast operation so as to ensure that the operation is convenient, and a large drive ratio can be used for precise focusing so as to realize slow precise adjustment, thereby solving the conflict between fast convenient operation and slow precise focusing and realizing the switching between fast focusing and slow precise focusing of the focusing mechanism. The invention provides the fast focusing mode and the slow precise focusing mode of the collimator to enable the focusing of the collimator to be more convenient and precise.
Description
Technical field
The present invention relates to a kind of realization mechanism of focusing, particularly relate to a kind of realization mechanism of point instrumentation speed change focusing, belong to photoelectric measurement and field of mechanical technique.
Background technology
The visual focusing stroke of point instrumentation is bigger, be applied to the point instrumentation of carrier rocket ground aiming system at present, adopt single speed focus adjusting mechanism commonly used, but there is the contradiction between operation rapid and convenient and the accurate at a slow speed focusing in the single speed focus adjusting mechanism, if with less ratio of gear, then simple operation, but when accurately focusing, differentiate rate variance, if with bigger ratio of gear, good resolution when accurate focusing but simple operation is poor.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, a kind of realization mechanism of speed change focusing is provided.Overcome the focusing of original single speed focus adjusting mechanism convenient with the contradiction between accurately at a slow speed, realize point instrumentation focusing and when approaching adjusting, transfer accurate focusing at a slow speed to fast.
Technical solution of the present invention is: the realization mechanism of point instrumentation speed change focusing, comprise focusing handwheel, transmission ring, feather key, stop screw, focusing drawtube and focusing microscope base, wherein process spacing breach on the transmission ring, the internal thread of transmission ring is the single head ocular thread, external thread is the four-head ocular thread, the internal thread of focusing handwheel cooperates with the external thread of transmission ring, the internal thread of transmission ring cooperates with the external thread of feather key, feather key is connected and is slidingly matched with chute on the focusing drawtube with the focusing microscope base, and stop screw is positioned in the middle of the spacing breach and with the focusing microscope base and is connected.
Described spacing gap opened is 90 ± 2 °.
Described feather key is the outside square key of single head ocular thread that is.
The internal thread of described focusing handwheel is the four-head ocular thread.
The present invention compared with prior art beneficial effect is:
(1) the present invention adopts transmission ring, feather key and stop screw, when operating fast, adopt close steps, guarantee simple operation, adopt big speed ratio can realize accurately adjusting at a slow speed when accurately focusing, solve the contradiction between operation rapid and convenient and the accurate at a slow speed focusing, realized focus adjusting mechanism focusing and the conversion of accurate focusing at a slow speed fast;
(2) the invention provides the quick focusing and the mode of two kinds of point instrumentations of accurate focusing focusing at a slow speed, make the point instrumentation focusing more convenient, accurate;
(3) internal and external screw thread of transmission ring of the present invention adopts the ocular thread of a different number, keeps relative static between focusing handwheel and the transmission ring when focusing at a slow speed, when focusing fast, and focusing handwheel and transmission ring rotation.
Description of drawings
Fig. 1 is a front view of the present invention;
Fig. 2 is a vertical view of the present invention;
Fig. 3 is a transmission ring front view of the present invention;
Fig. 4 is a transmission ring side view of the present invention;
Fig. 5 is a feather key front view of the present invention;
Fig. 6 is a feather key side view of the present invention.
Embodiment
The point instrumentation speed change focusing switching mechanism of invention is applied to carrier rocket ground aiming of new generation system, the contradiction between mainly solving the operation rapid and convenient and accurately focusing at a slow speed.
The present invention as shown in Figure 1, 2, comprise focusing handwheel 1, transmission ring 2, feather key 3, stop screw 4, focusing drawtube 5 and focusing microscope base 6, the internal thread of focusing handwheel 1 cooperates with the external thread of transmission ring 2, the internal thread of transmission ring 2 cooperates with the external thread of feather key 3, feather key 3 is connected with focusing microscope base 6 and is slidingly matched with chute on the focusing drawtube 5, and stop screw 4 is connected with focusing microscope base 6.
The present invention realizes the principle of work of speed change focusing:
Rotate focusing handwheel during focusing, because the few helical pitch of the inner thread head number of power wheel is little, frictional resistance is little, the many helical pitches of external thread head number of power wheel are big, frictional resistance is big, so focusing handwheel and power wheel can not relatively rotate, become one and feather key between relatively rotate, and then it is mobile at a slow speed to drive the focusing microscope base, after transmission ring and stop screw were collided, transmission ring and feather key can't relatively rotate, and focusing handwheel and transmission ring relatively rotate, drive focusing microscope base fast moving, realize focusing fast.After surpassing focusing position slightly, the counter-rotating focusing handwheel, at this moment, transmission ring and stop screw are thrown off, and focusing handwheel and transmission ring drive the focusing microscope base and move at a slow speed owing to frictional resistance becomes one greatly, realize at a slow speed accurately focusing.
The unspecified part of the present invention belongs to general knowledge as well known to those skilled in the art and point instrumentation technology general knowledge.
Claims (2)
1. the realization mechanism of point instrumentation speed change focusing, it is characterized in that: comprise focusing handwheel (1), transmission ring (2), feather key (3), stop screw (4), focusing drawtube (5) and focusing microscope base (6), wherein transmission ring (2) is gone up processing spacing breach (21), the internal thread of transmission ring (2) is the single head ocular thread, external thread is the four-head ocular thread, feather key (3) is the outside square key of single head ocular thread that is, the internal thread of focusing handwheel (1) is the four-head ocular thread, the internal thread of focusing handwheel (1) cooperates with the external thread of transmission ring (2), the internal thread of transmission ring (2) cooperates with the external thread of feather key (3), feather key (3) is connected with focusing microscope base (6) and is slidingly matched with chute on the focusing drawtube (5), and stop screw (4) is positioned in the middle of the spacing breach (21) and with focusing microscope base (6) and is connected.
2. the realization mechanism of point instrumentation speed change focusing according to claim 1, it is characterized in that: described spacing breach (21) opening is 90 ± 2 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010253648.1A CN101963690A (en) | 2010-08-13 | 2010-08-13 | Mechanism for realizing speed-variable focusing of collimator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010253648.1A CN101963690A (en) | 2010-08-13 | 2010-08-13 | Mechanism for realizing speed-variable focusing of collimator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101963690A true CN101963690A (en) | 2011-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010253648.1A Pending CN101963690A (en) | 2010-08-13 | 2010-08-13 | Mechanism for realizing speed-variable focusing of collimator |
Country Status (1)
| Country | Link |
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| CN (1) | CN101963690A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104409825A (en) * | 2014-12-01 | 2015-03-11 | 中国科学院新疆天文台 | Focusing method for feed source of radio telescope receiver |
| CN104849853A (en) * | 2014-12-10 | 2015-08-19 | 重庆禾洋光电仪器有限公司 | Fast focusing telescopic landscape lens |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4130340A (en) * | 1977-07-13 | 1978-12-19 | Keuffel & Esser Company | Two-speed telescope focusing mechanism |
| CN2725924Y (en) * | 2004-09-08 | 2005-09-14 | 中国人民解放军第二炮兵工程学院 | Linkage fast focusing telescope |
| CN2775700Y (en) * | 2005-02-03 | 2006-04-26 | 深圳市金凯进光电仪器有限公司 | Improvement of aiming lens focusing hand wheel structure |
-
2010
- 2010-08-13 CN CN201010253648.1A patent/CN101963690A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4130340A (en) * | 1977-07-13 | 1978-12-19 | Keuffel & Esser Company | Two-speed telescope focusing mechanism |
| CN2725924Y (en) * | 2004-09-08 | 2005-09-14 | 中国人民解放军第二炮兵工程学院 | Linkage fast focusing telescope |
| CN2775700Y (en) * | 2005-02-03 | 2006-04-26 | 深圳市金凯进光电仪器有限公司 | Improvement of aiming lens focusing hand wheel structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104409825A (en) * | 2014-12-01 | 2015-03-11 | 中国科学院新疆天文台 | Focusing method for feed source of radio telescope receiver |
| CN104409825B (en) * | 2014-12-01 | 2016-11-30 | 中国科学院新疆天文台 | A kind of focusing method of radio telescope receiver feed |
| CN104849853A (en) * | 2014-12-10 | 2015-08-19 | 重庆禾洋光电仪器有限公司 | Fast focusing telescopic landscape lens |
| CN104849853B (en) * | 2014-12-10 | 2018-06-01 | 望江县天长光学仪器有限公司 | The telescopic landscape lens quickly focused |
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| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20110202 |
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