CN111487742B - Differential heavy-load fine adjustment mechanism - Google Patents
Differential heavy-load fine adjustment mechanism Download PDFInfo
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- CN111487742B CN111487742B CN202010471610.5A CN202010471610A CN111487742B CN 111487742 B CN111487742 B CN 111487742B CN 202010471610 A CN202010471610 A CN 202010471610A CN 111487742 B CN111487742 B CN 111487742B
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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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Abstract
The invention discloses a differential heavy-load fine adjustment mechanism, which belongs to the technical field of ground integration of large-scale space optical remote sensors and is used for solving the technical problem that a fine thread type fine adjustment mechanism in the prior art cannot meet the use requirements of high-precision and high-resolution installation and adjustment on the ground of a large-scale space optical remote sensor; one end of the nut shell is in threaded connection with the adjusting stud, and a guide groove is formed in the side wall, far away from the end of the adjusting stud, of the nut shell along the axis direction; the jogging column is connected to the end of the nut shell far away from the adjusting screw column in a sliding mode, and the side wall of the jogging column is fixedly connected with a guide pin and used for limiting the degree of freedom of the jogging column in rotation around the axis of the nut shell in a sliding mode; the micro-motion column is positioned at the end of the adjusting stud and is in threaded connection with the adjusting stud; the adjusting stud is driven to rotate, and the adjusting stud can push the micro-motion column to move along the axis direction of the nut shell.
Description
Technical Field
The invention relates to the technical field of ground integration of large space optical remote sensors, in particular to a differential heavy-load fine adjustment mechanism.
Background
At present, with the increasing demand of ground investigation and surveying and mapping, the volume and the weight of a space optical remote sensor are also multiplied, and for the ground high-precision and high-resolution assembly and adjustment of a large-volume space optical remote sensor, the traditional fine thread type fine adjustment mechanism cannot meet the use demand;
therefore, in order to meet the installation and adjustment requirements of the large-scale heavy-load space optical remote sensor, shorten the research and development period of the space optical remote sensor, and ensure the installation and adjustment integration quality, a differential heavy-load fine adjustment mechanism with compact structure, large bearing capacity and simple operation is urgently needed.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a differential heavy-load fine adjustment mechanism which is compact in structure, high in bearing capacity and simple to operate.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention discloses a differential heavy-load fine-tuning mechanism, which comprises:
adjusting the stud;
one end of the nut shell is in threaded connection with the adjusting stud, and a guide groove is formed in the side wall, far away from the end of the adjusting stud, of the nut shell along the axis direction;
the micro-motion column is connected to the end, far away from the adjusting screw column, of the nut shell in a sliding mode, and the side wall of the micro-motion column is fixedly connected with a guide pin and used for limiting the rotation freedom degree of the micro-motion column around the axis of the nut shell in a sliding mode through the guide groove;
the micro-motion column is positioned at the end of the adjusting stud and is in threaded connection with the adjusting stud;
the adjusting stud is driven to rotate, and the adjusting stud can push the micro-motion column to move along the axis direction of the nut shell.
Further, an external thread is formed on the outer wall of the adjusting stud;
the threaded connection end of the adjusting stud and the nut shell is provided with a blind hole;
an internal thread is formed on the inner wall of the blind hole;
the inner thread of the blind hole has the same rotating direction with the outer thread on the outer wall of the adjusting stud.
Further, the micro-motion column is of a cylindrical structure;
a connecting column for being in threaded connection with the blind hole is formed at one end of the micro-motion column;
and the side wall of the micro-motion column is provided with a threaded hole for connecting the guide pin in a threaded manner.
Further, the diameter of the connecting column is smaller than that of the micro-motion column.
Further, the depth of the blind hole is not less than the length of the connecting column.
Furthermore, the blind hole comprises a threaded section in threaded connection with the connecting column and an unthreaded hole section formed at the tail end of the blind hole, and the length of the threaded section is smaller than that of the unthreaded hole section.
In the above technical solution, the differential heavy-load fine adjustment mechanism provided by the present invention comprises:
has the advantages that: compared with the prior art, the invention has the advantages of compact structure, convenient installation, large carrying capacity and high adjustment resolution, can realize multi-dimensional motion adjustment by matching multiple mechanisms, can meet the ground integrated adjustment work of an ultra-large space remote sensor, and shortens the development period of the space optical remote sensor; in addition, the differential heavy-load fine adjustment mechanism adopts a modular design, is simple to process, convenient to assemble, convenient to install and maintain and capable of being widely applied to other fields with high requirements on load capacity and adjustment resolution.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a front view of a differential heavy-duty fine adjustment mechanism disclosed in the present invention.
Description of reference numerals:
1. adjusting the stud; 2. a nut housing; 3. a jogging column; 4. and a guide pin.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1;
the invention provides a differential heavy-load fine adjustment mechanism, which comprises:
adjusting the stud 1;
one end of the nut shell 2 is in threaded connection with the adjusting stud 1, and a guide groove is formed in the side wall of the nut shell 2, which is far away from the end of the adjusting stud 1, along the axis direction;
the micro-motion column 3 is connected to the end, far away from the adjusting stud 1, of the nut shell 2 in a sliding mode, and the side wall of the micro-motion column 3 is fixedly connected with a guide pin 4 which is used for limiting the rotation freedom degree of the micro-motion column 3 around the axis of the nut shell 2 in a sliding mode and connected with a guide groove in a sliding mode;
the micro-motion column 3 is positioned at the end of the adjusting stud 1 and is in threaded connection with the adjusting stud 1;
when the nut is used, the adjusting stud 1 is driven to rotate, and the adjusting stud 1 can push the micro-motion stud 2 to move along the axis direction of the nut shell 2.
Preferably, the outer wall of the adjusting stud 1 is provided with an external thread; a blind hole is formed in the threaded connection end of the adjusting stud 1 and the nut shell 2; an internal thread is formed on the inner wall of the blind hole; the internal thread of the blind hole has the same rotating direction with the external thread on the outer wall of the adjusting stud 1.
Specifically, as shown in fig. 1, in the structure, one end of a nut shell 2 is in threaded connection with an adjusting stud 1, the other end of the nut shell is in sliding connection with a jogging column 3, the nut shell 2 is provided with a guide groove, the side wall of the jogging column 3 is fixedly connected with a guide pin 4, and the guide pin 4 is in sliding connection with the guide groove and limits the degree of freedom of the jogging column 3 in rotation along the axis of the nut shell 2;
when the nut shell 2 is fixedly connected with external equipment or the rotational freedom degree of the nut shell 2 is limited by the external equipment, the adjusting stud 1 is rotated to drive the micro-motion column 3 to perform high-resolution motion, under the action that the rotation directions of the external thread and the internal thread on the adjusting stud 1 are the same, the adjusting stud 1 rotates for a circle, the motion amount of the micro-motion column 3 along the axial direction (along the horizontal direction shown in the attached drawing 1) of the nut shell 2 is the difference value between the external thread lead and the internal thread lead of the adjusting stud 1, when the external thread lead and the internal thread lead are large but the lead difference is small, the dual requirements of load capacity and resolution adjustment can be considered, and the high-resolution adjustment function of a heavy-load object is realized;
referring to fig. 1, the micro-motion column 3 is preferably a cylinder structure; a connecting column for being in threaded connection with the blind hole is formed at one end of the micro-motion column 3; the side wall of the micro-motion column 3 is provided with a threaded hole for being in threaded connection with the guide pin 4, and the diameter of the connecting column is smaller than that of the micro-motion column 3.
Specifically, in the structure, the jogging column 3 is positioned at the end of the adjusting stud 1 to form a connecting column, external threads in threaded connection with the blind hole are formed outside the connecting column, and the diameter of the connecting column is smaller than that of the jogging column 3, so that the structure is reasonable, and the differential heavy-load fine adjustment mechanism is favorably ensured to be compact in structure;
referring to fig. 1, the blind hole preferably has a depth no less than the length of the connecting stud. When the adjusting stud bolt is used, the connecting column of the micro-motion column 3 can be completely retracted into the blind hole of the adjusting stud bolt 1 when the adjusting stud bolt 1 rotates to the limit position, and the compactness of the structure is guaranteed.
Preferably, the blind hole comprises a threaded section in threaded connection with the connecting column and a smooth hole section formed at the end of the blind hole, and the length of the threaded section is smaller than that of the smooth hole section.
Specifically, a threaded section and a smooth hole section are formed on the inner wall of the blind hole, and the length of the threaded section is set to be smaller than that of the smooth hole section, so that the blind hole of the adjusting stud 1 is convenient to machine, install and machine, the machining time is saved, and the working efficiency is improved;
in the technical scheme, the invention provides a differential heavy-load fine adjustment mechanism;
the using method comprises the following steps:
firstly, fixing the nut shell 2 and limiting the rotational freedom degree of the nut shell 2;
the front end of the micro-motion column 3 is contacted with an element to be adjusted;
the adjusting stud 1 is rotated to drive the micro-motion column 3 to perform high-resolution motion, the adjusting stud 1 rotates for a circle by utilizing the same rotating direction of the external thread and the internal thread on the adjusting stud 1, the amount of motion of the micro-motion column 3 along the horizontal direction is the difference value of the lead of the external thread and the internal thread of the adjusting stud 1, when the lead of the external thread and the internal thread is large but the lead difference is small, the dual requirements of load capacity and resolution adjustment can be considered, and the high-resolution adjusting function of the heavy-load object is realized;
has the advantages that: compared with the prior art, the invention has the advantages of compact structure, convenient installation, large carrying capacity and high adjustment resolution, can realize multi-dimensional motion adjustment by matching multiple mechanisms, can meet the ground integrated adjustment work of an ultra-large space remote sensor, and shortens the development period of the space optical remote sensor; in addition, the differential heavy-load fine adjustment mechanism adopts a modular design, is simple to process, convenient to assemble, convenient to install and maintain and capable of being widely applied to other fields with high requirements on load capacity and adjustment resolution.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (1)
1. A differential heavy load fine-tuning mechanism, comprising:
an adjusting stud (1);
the nut shell (2) is in threaded connection with the adjusting stud (1) at one end, a guide groove is formed in the side wall, away from the adjusting stud (1), of the nut shell (2) along the axis direction, the length of an internal thread of the nut shell (2) is smaller than that of an external thread of the adjusting stud (1), and the screwing length of the internal thread of the nut shell (2) and the external thread of the adjusting stud (1) is kept unchanged;
the micro-motion column (3) is connected to the end, far away from the adjusting stud (1), of the nut shell (2) in a sliding mode, and a guide pin (4) is fixedly connected to the side wall of the micro-motion column (3) and used for limiting the rotation freedom degree of the micro-motion column (3) around the axis of the nut shell (2) in a sliding mode through being connected with the guide groove in a sliding mode;
the micro-motion column (3) is positioned at the end of the adjusting stud (1) and is in threaded connection with the adjusting stud (1);
the adjusting stud (1) is driven to rotate, and the adjusting stud (1) can push the micro-motion column (3) to displace along the axis direction of the nut shell (2);
external threads are formed on the outer wall of the adjusting stud (1);
the threaded connection end of the adjusting stud (1) and the nut shell (2) is provided with a blind hole;
an internal thread is formed on the inner wall of the blind hole;
the inner thread of the blind hole has the same rotating direction as the outer thread on the outer wall of the adjusting stud (1);
the micro-motion column (3) is of a cylindrical structure;
a connecting column for being in threaded connection with the blind hole is formed at one end of the micro-motion column (3);
the side wall of the micro-motion column (3) is provided with a threaded hole for connecting the guide pin (4) in a threaded manner;
the depth of the blind hole is not less than the length of the connecting column;
the blind hole comprises a threaded section in threaded connection with the connecting column and a smooth hole section formed at the tail end of the blind hole, the length of the threaded section is smaller than that of the smooth hole section, and the screwing length of the threaded section and the external thread of the connecting column is kept unchanged;
the diameter of the connecting column is smaller than that of the micro-motion column (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010471610.5A CN111487742B (en) | 2020-05-29 | 2020-05-29 | Differential heavy-load fine adjustment mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010471610.5A CN111487742B (en) | 2020-05-29 | 2020-05-29 | Differential heavy-load fine adjustment mechanism |
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| CN111487742A CN111487742A (en) | 2020-08-04 |
| CN111487742B true CN111487742B (en) | 2022-04-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113050250B (en) * | 2021-03-22 | 2023-03-17 | 中国科学院国家天文台南京天文光学技术研究所 | High-precision micro-displacement actuator utilizing threaded parallel structure |
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| CN111487742A (en) | 2020-08-04 |
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