CN113586871A

CN113586871A - Two-dimensional inclination adjusting mechanism

Info

Publication number: CN113586871A
Application number: CN202110864220.9A
Authority: CN
Inventors: 寇伟; 吕博; 康玉思; 冯睿; 刘伟奇
Original assignee: Changchun Institute of Optics Fine Mechanics and Physics of CAS
Current assignee: Changchun Institute of Optics Fine Mechanics and Physics of CAS
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2021-11-02
Anticipated expiration: 2041-07-29
Also published as: CN113586871B

Abstract

The invention provides a two-dimensional tilt adjustment mechanism, comprising: the device comprises a moving plate for fixing and bearing elements, a fixed plate for supporting the moving plate, a universal spherical hinge module arranged between the moving plate and the fixed plate for supporting the moving plate, a first adjusting module and a second adjusting module symmetrically arranged on the moving plate for adjusting the angle of the moving plate; the two-dimensional inclination adjusting mechanism provided by the invention has the advantages that the structure is simple, the cost is low, no spring is used in a pre-tightening mode of the structure, the adjustment force is ensured to be unchanged in the adjustment process, the adjustment is smooth, and the adjustment contact surface is not damaged so as not to influence the adjustment precision; the length of the exposed part of the precise screw is short and constant, so that the limitation on the installation space is reduced; the invention has no limit on the adjusting direction, and avoids the problems of pull-off and adjustment failure possibly caused by adopting the spring to pre-tighten when the load is overlarge.

Description

Two-dimensional inclination adjusting mechanism

Technical Field

The invention relates to the field of mechanical adjusting devices, in particular to a two-dimensional inclination adjusting mechanism.

Background

When a measuring, testing, debugging or testing platform is built, optical elements, lenses, mechanical parts and the like need to be inclined and adjusted, so that high alignment precision is achieved, and measuring, testing or system indexes reach ideal results.

Currently, there are a variety of mechanisms that can perform two-dimensional tilt adjustment of optical elements, lenses, mechanical parts, and the like. For some inclined two-dimensional inclination adjusting mechanisms, inclination adjustment is performed by adopting the modes of pin shaft rotation, sliding block and sliding groove matching and the like, the inclined scheme needs higher processing matching precision, and if the matching precision is low, the sliding or rotating in the adjusting process easily generates larger friction resistance to cause unsmooth movement and blockage, or the gap is too large to cause low adjusting precision; some inclination adjustment schemes adopt rotation of a lead screw, a gear and other matched joint hinges to perform inclination adjustment, but the mode is complex in structure, complex in size chain, multiple in transmission chain, large in size of the whole adjustment structure, incapable of being applied to a scene with limited space size, complex in structure, high in requirements for manufacturing and assembling processes, and large in accumulated error after the structure is assembled and incapable of achieving expected adjustment accuracy if the assembling accuracy is low or the part machining accuracy is not high. The simple inclination adjusting mechanism adopts a screw to screw in or screw out to drive a motion module of the adjusting mechanism to generate displacement and combines with pretightening force provided by a tension spring or a pressure spring to finish inclination adjustment, but in practical application, if the load is large or the use direction is not proper, the load weight easily causes the tension spring or the pressure spring to have overlarge expansion amount, so that the adjusting screw is separated from the motion module to cause that the inclination adjusting mechanism can not be used, and when the screw is adjusted, the resistance of the screw is increasingly large along with the increase of the adjustment amount, so that the adjustment is not smooth and the precision is difficult to control; the end part of the screw rod is always pressed against the fixed structure, friction is generated when the screw rod rotates, the adjusting screw rod is easy to wear after a long time, and the adjusting precision is inaccurate; the size of the exposed part of the adjusting screw rod can be increased or shortened along with the change of the adjusting amount by adopting the screw rod screwing-in or screwing-out mode for adjustment; when the size space in installation is restricted, when the screw rod is unscrewed, the screw rod is easy to interfere with other structures, and the problem that the screw rod cannot be adjusted or used is caused.

Disclosure of Invention

The invention provides a two-dimensional inclination adjusting mechanism for solving the problems.

In order to achieve the purpose, the invention adopts the following specific technical scheme:

the invention provides a two-dimensional inclination adjusting mechanism, comprising: the device comprises a moving plate for fixing and bearing elements, a fixed plate for supporting the moving plate, a universal spherical hinge module arranged between the moving plate and the fixed plate for supporting the moving plate, a first adjusting module and a second adjusting module symmetrically arranged on the moving plate for adjusting the angle of the moving plate;

the fixed plate is arranged below the moving plate; the fixed plate is connected with the moving plate through the universal spherical hinge module, the first adjusting module and the second adjusting module; the first adjusting module, the universal spherical hinge module and the second adjusting module are sequentially arranged at a triangle of the moving plate; a connecting line of the first adjusting module and the universal spherical hinge module is used as an X axis; a connecting line of the second adjusting module and the universal spherical hinge module is used as a Y axis; the X axis and the Y axis are orthogonal;

the first or second conditioning module includes: the device comprises a V-shaped block, a precise ball head arranged on a moving plate and used for being matched with a V-shaped groove on the V-shaped block, a fixed seat arranged on a fixed plate and used for supporting a two-dimensional inclination adjusting mechanism, a sliding block supporting seat arranged on the fixed seat, a bearing arranged on the sliding block supporting seat, a sliding block, a set screw used for eliminating a gap between the sliding block and the V-shaped block, a thread sleeve arranged on the V-shaped block, a precise screw respectively arranged with the thread sleeve and the bearing in a matched mode, a bearing locking nut arranged on the precise screw and used for locking the precise screw and the bearing, and a rotating assembly arranged on the precise screw and used for controlling the precise screw; the V-shaped block is arranged between the precision ball head and the sliding block.

Preferably, one end of the rotating assembly is in interference fit with the precision screw and is locked and fixed through a jackscrew; the other end of the rotating assembly is a knob for transmitting force.

Preferably, the precision screw is of a stepped shaft structure; the connecting section of the precision screw and the threaded sleeve is provided with an external thread matched with the threaded sleeve; a shaft shoulder for axially positioning the bearing and an external thread for installing a bearing locking nut are arranged on the connection section of the precision screw and the bearing; the precision screw rod extends out of the fixed seat and is used for being connected with the rotating assembly.

Preferably, the threaded sleeve and the hole in the V-shaped block are in interference fit and are locked and fixed through a jackscrew.

Preferably, the V-shaped blocks are restrained by the sliding blocks and move linearly along the grooves on the sliding block supporting seats together; the central axis of the V-shaped block on the first adjusting module is parallel to the X-axis direction, and the central axis of the V-shaped block on the second adjusting module is parallel to the Y-axis direction.

Preferably, the bearing is a bearing with constant radial play; the outer ring of the bearing and the bearing mounting hole on the sliding block supporting seat are in interference fit and are locked and fixed through a jackscrew.

Preferably, the slider is a self-lubricating material.

Preferably, the sliding block supporting seat is provided with a long round hole, and the sliding block supporting seat is fixed on the fixed seat through a screw passing through the long round hole; the width of the long round hole is the same as the nominal diameter of the screw; the distance between the centers of the long round holes is twice of the diameter of the screw; the slotted hole and the screw are in clearance fit, so that the sliding block supporting seat can slide along the slotted hole under the constraint of the screw and cannot rotate.

Preferably, a sealing cover for sealing is mounted on the fixing base.

The invention can obtain the following technical effects:

the two-dimensional inclination adjusting mechanism provided by the invention has the advantages that the structure is simple, the cost is low, no spring is used in a pre-tightening mode of the structure, the adjustment force is ensured to be unchanged in the adjustment process, the adjustment is smooth, and the adjustment contact surface is not damaged so as not to influence the adjustment precision; the length of the exposed part of the precise screw is short and constant, so that the limitation on the installation space is reduced; the invention has no limit on the adjusting direction, and avoids the problems of pull-off and adjustment failure possibly caused by adopting the spring to pre-tighten when the load is overlarge.

Drawings

FIG. 1 is a schematic diagram of the overall structure according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a manner in which a first conditioning module and a second conditioning module cooperate with a motion plate according to an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of the structure of the second conditioning module in the A direction of FIG. 2, in accordance with an embodiment of the present invention;

FIG. 4 is an isometric cross-sectional view of a first conditioning module and a second conditioning module according to an embodiment of the invention;

FIG. 5 is a partial cross-sectional view of the universal ball joint module of FIG. 4 according to an embodiment of the present invention;

FIG. 6 is an enlarged partial view of a cross-sectional view of the second conditioning module of FIG. 4 in accordance with an embodiment of the present invention;

FIG. 7 is an enlarged partial view of the second conditioning module of FIG. 6 in position 2A, in accordance with an embodiment of the present invention.

Wherein the reference numerals include: the device comprises a moving plate 1, a first adjusting module 1A, a second adjusting module 1B, a universal ball joint module 1C, a fixing plate 2, an element 3, a rotating assembly 4, a precision screw rod 5, a fixing seat 6, a sealing cover 7, a V-shaped block 8, a precision ball head 9, a bearing 10, a bearing locking nut 11, a sliding block supporting seat 12, a set screw 13, a sliding block 14, a threaded sleeve 15, a universal ball joint 16 and a long round hole 17.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following description, the same reference numerals are used for the same blocks. In the case of the same reference numerals, their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention.

The specific operation of the present invention will be described in detail with reference to fig. 1 to 7:

as shown in fig. 1, the present invention provides a two-dimensional tilt adjusting mechanism, comprising: a moving plate 1 for fixing and carrying an element 3, a fixed plate 2 for supporting the moving plate 1, a universal ball joint module 1C installed between the moving plate 1 and the fixed plate 2 for supporting the moving plate 1, a first adjusting module 1A and a second adjusting module 1B symmetrically installed on the moving plate 1 for adjusting an angle of the moving plate 1;

the fixed plate 2 is arranged below the moving plate 1; the fixed plate 2 is connected with the moving plate 1 through a universal spherical hinge module 1C, a first adjusting module 1A and a second adjusting module 1B; the first adjusting module 1A, the universal spherical hinge module 1C and the second adjusting module 1B are sequentially arranged at the triangle of the moving plate 1; a connecting line of the first adjusting module 1A and the universal spherical hinge module 1C is taken as an X axis; a connecting line of the second adjusting module 1B and the universal spherical hinge module 1C is used as a Y axis; the X axis and the Y axis are orthogonal;

the internal structures of the first regulating module 1A and the second regulating module 1B are completely the same;

as shown in fig. 2 and 3, the first or

second conditioning module

1A or 1B includes: the device comprises a rotating assembly 4, a precision screw rod 5, a fixed seat 6, a sealing cover 7, a V-shaped block 8, a precision ball head 9, a bearing 10, a bearing locking nut 11, a sliding block supporting seat 12, a set screw 13, a sliding block 14 and a threaded sleeve 15.

The rotation assembly 4 is used to control a precision screw 5. One end of the rotating component 4 is in interference fit with the precision screw 5 and is locked and fixed through a jackscrew; the other end of the rotating assembly 4 is a knob for transmitting force. The knob can be manually rotated or rotated by a motor. In actual use, the knob is placed on a horizontal plane for supporting the entire two-dimensional tilt adjustment mechanism.

The precision screw 5 is used to control the V-block 8. The precision screw 5 is respectively matched and installed with the threaded sleeve 15 and the bearing 10. The precision screw 5 is of a stepped shaft structure; the connecting section of the precision screw 5 and the threaded sleeve 15 is provided with an external thread matched with the threaded sleeve 15; a shaft shoulder for axially positioning the bearing 10 and an external thread for installing a bearing locking nut 11 are arranged at the connecting section of the precision screw rod 5 and the bearing 10; a precision screw 5 extends from the mounting 6 for connection to the rotating assembly 4.

The fixing seat 6 is used for supporting the two-dimensional inclination adjusting mechanism. The fixing seat 6 is installed on the fixing plate 2.

The sealing cover 7 is used for sealing. The sealing cover 7 is arranged on the fixed seat 6.

The V-shaped block 8 is used for controlling the precision ball 9. The V-shaped block 8 is arranged between the precision ball 9 and the sliding block 14. The V-shaped block 8 is restrained by the sliding block 14 and moves linearly along the groove on the sliding block supporting seat 12 together; as shown in fig. 4, the central axis of the V-block on the first adjustment module 1A is parallel to the X-axis direction, and the central axis of the V-block on the second adjustment module 1B is parallel to the Y-axis direction.

The precision ball 9 is used for matching with a V-shaped groove on the V-shaped block 8. The precision ball 9 is arranged on the motion plate 1. In one embodiment of the present invention, the precision ball 9 is fixedly mounted on the moving plate 1 by screw threads.

The bearing 10 serves to reduce the rotational resistance of the precision screw 5. The bearing 10 is mounted on a slider support base 12. The bearing 10 is a bearing with unchanged radial play; the outer ring of the bearing 10 and the bearing mounting hole on the sliding block supporting seat 12 adopt an interference fit mode and are locked and fixed through a jackscrew. In one embodiment of the present invention, the bearing 10 is a lightly preloaded deep groove ball bearing to ensure no radial clearance.

The bearing lock nut 11 is used to lock the precision screw 5 and the bearing 10. The bearing lock nut 11 is mounted on the precision screw 5 by a thread.

The slide block support 12 is used for restricting the movement of the V-shaped block 8. The slide block supporting seat 12 is installed on the fixed seat 6. The slider supporting seat 12 is provided with an oblong hole 17, and the slider supporting seat 12 is fixed on the fixed seat 6 through a screw passing through the oblong hole 17; the width of the oblong hole 17 is the same as the nominal diameter of the screw; the center distance of the oblong holes 17 is twice the diameter of the screw; the oblong hole 17 and the screw are in clearance fit, so that the sliding block supporting seat 12 can slide along the oblong hole 17 under the constraint of the screw and cannot rotate.

The set screw 13 is used to eliminate the gap between the slider 14 and the V-block 8. The set screw 13 is mounted on the slider support base 12. The slide block 14 is pushed to be in complete contact with the V-shaped block 8 through the set screw 13, and no gap exists between the slide block 14 and the V-shaped block 8.

The slider 14 is used to reduce the frictional resistance of the V-block 8. The slider 14 is mounted between the V-block 8 and the slider support 12. The slide 14 is made of self-lubricating material.

The threaded sleeve 15 is used for cooperating with the precision screw 5 to control the movement of the V-shaped block 8. The threaded sleeve 15 is mounted on the V-block 8. The thread bush 15 and the hole on the V-shaped block 8 adopt an interference fit mode and are locked and fixed through a jackscrew. The threaded sleeve 15 is connected with the precision screw 5 through precision threads, so that no gap is formed between the threaded sleeve 15 and the precision screw 5 during rotation, and the adjusting precision is guaranteed.

As shown in fig. 5, a universal ball joint 16 is included in the universal ball joint module 1C, and the universal ball joint 16 is used for ensuring that the moving plate 1 can rotate along the X axis and the Y axis. A universal ball joint 16 is installed between the moving plate 1 and the fixed plate 2.

The working principle of the two-dimensional inclination adjusting mechanism provided by the invention is as follows:

when the motion plate 1 is adjusted to rotate around the X-axis direction, the second adjusting module 1B is adjusted, the rotating assembly 4 in the second adjusting module 1B is rotated, the rotating assembly 4 drives the precision screw 5 to rotate together, the precision screw 5 drives the V-shaped block 8 to do vertical linear motion along the sliding block 14 through the threaded sleeve 15, and the V-shaped block 8 drives the motion plate 1 to rotate around the X-axis through the precision ball head 9, so that the rotation adjustment of the element 3 in the X-axis direction is completed;

when the precision ball head 9 in the second adjusting module 1B rotates around the X axis, the precision ball head can translate along the Y axis direction to form coupling motion; because the V-shaped groove of the V-shaped block 8 in the second adjusting module 1B is along the Y-axis direction, the degree of freedom of the movement of the precision ball 9 in the Y-axis direction is not limited, so that the locking phenomenon does not occur when the moving plate 1 is adjusted to rotate around the X-axis direction.

When the movement plate 1 is adjusted to rotate around the Y-axis direction, the first adjusting module 1A is adjusted, and the working principle of the first adjusting module 1A is the same as that of the first adjusting module 1A.

In summary, the present invention provides a two-dimensional tilt adjustment mechanism. The two-dimensional inclination adjusting mechanism provided by the invention has the advantages that the structure is simple, the cost is low, no spring is used in a pre-tightening mode of the structure, the adjustment force is ensured to be unchanged in the adjustment process, the adjustment is smooth, and the adjustment contact surface is not damaged so as not to influence the adjustment precision; the length of the exposed part of the precision screw 5 is short and fixed, so that the limitation on the installation space is reduced; the invention has no limit on the adjusting direction, and avoids the problems of pull-off and adjustment failure possibly caused by adopting the spring to pre-tighten when the load is overlarge.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are exemplary and should not be taken as limiting the invention. Variations, modifications, substitutions and alterations of the above-described embodiments may be made by those of ordinary skill in the art without departing from the scope of the present invention.

The above embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A two-dimensional tilt adjustment mechanism, characterized in that it comprises: a moving plate (1) for fixing and carrying an element (3), a fixing plate (2) for supporting the moving plate (1), an installation A universal ball joint module (1C) used to support the motion board (1) between the motion board (1) and the fixed board (2) is symmetrically mounted on the motion board (1) for use a first adjustment module (1A) and a second adjustment module (1B) for adjusting the angle of the motion board (1);

The fixing plate (2) is installed under the moving plate (1); the fixing plate (2) and the moving plate (1) pass through the universal ball hinge module (1C), the first The adjustment module (1A) is connected with the second adjustment module (1B); the first adjustment module (1A), the universal ball joint module (1C) and the second adjustment module (1B) are installed in sequence on the The triangle of the motion board (1); taking the connecting line between the first adjusting module (1A) and the universal ball joint module (1C) as the X-axis; taking the second adjusting module (1B) and the The connecting line of the universal ball joint module (1C) is the Y axis; the X axis and the Y axis are orthogonal;

The first adjustment module (1A) or the second adjustment module (1B) comprises: a V-shaped block (8), which is mounted on the motion board (1) and is used to communicate with the V-shaped block (8). The precision ball head (9) fitted with the V-shaped groove, the fixed seat (6) installed on the fixed plate (2) for supporting the two-dimensional tilt adjustment mechanism, the sliding plate installed on the fixed seat (6) A block supporting seat (12), a bearing (10) mounted on the sliding block supporting seat (12), a sliding block (14), and a sliding block (14) for eliminating the sliding block (14) and the V-shaped block (8) A set screw (13) with a gap between them, a threaded sleeve (15) installed on the V-shaped block (8), and a precision screw installed in cooperation with the threaded sleeve (15) and the bearing (10) respectively (5) A bearing lock nut (11) installed on the precision screw (5) for locking the precision screw (5) and the bearing (10), installed on the precision screw (5) The rotating assembly (4) used to control the precision screw (5); the V-shaped block (8) is installed between the precision ball head (9) and the slider (14).

2 . The two-dimensional tilt adjustment mechanism according to claim 1 , wherein one end of the rotating assembly ( 4 ) and the precision screw ( 5 ) are in an interference fit, and are locked and fixed by a top screw. 3 . ; The other end of the rotating assembly (4) is a knob for transmitting force.

3. The two-dimensional tilt adjustment mechanism according to claim 1, wherein the precision screw (5) is a stepped shaft structure; the connection with the threaded sleeve (15) on the precision screw (5) The segment is provided with an external thread for cooperating with the threaded sleeve (15); the connection segment with the bearing (10) on the precision screw (5) is provided with an axial positioning of the bearing (10) The shaft shoulder and the external thread for installing the bearing lock nut (11); the precision screw (5) protrudes from the fixing seat (6) for connecting with the rotating assembly (4) .

4. The two-dimensional tilt adjustment mechanism according to claim 1, wherein the threaded sleeve (15) and the hole on the V-shaped block (8) are in the form of interference fit, and are locked by a top screw Fasten tightly.

5 . The two-dimensional tilt adjustment mechanism according to claim 1 , wherein the V-shaped block ( 8 ) is constrained by the sliding block ( 14 ), and jointly along the sliding block on the sliding block support seat ( 12 ). 6 . The groove moves in a straight line; the central axis of the V-shaped block on the first adjustment module (1A) is parallel to the X-axis direction, and the central axis of the V-shaped block on the second adjustment module (1B) is parallel to the Y axis direction.

6. The two-dimensional tilt adjustment mechanism according to claim 1, wherein the bearing (10) is a bearing with constant radial clearance; the outer ring of the bearing (10) is supported by the slider The bearing mounting holes on the seat (12) are in the form of interference fit, and are locked and fixed by the top screw.

7. The two-dimensional tilt adjustment mechanism according to claim 1, wherein the slider (14) is made of self-lubricating material.

8. The two-dimensional tilt adjustment mechanism according to claim 1, characterized in that, an oblong hole (17) is formed on the slider support base (12), and a screw is passed through the oblong hole (17) to attach the The slider support seat (12) is fixed on the fixing seat (6); the width of the oblong hole (17) is the same as the nominal diameter of the screw; the center distance of the oblong hole (17) is the Twice the diameter of the screw; the oblong hole (17) and the screw are in clearance fit to ensure that the slider support seat (12) can slide along the oblong hole (17) under the constraint of the screw and do not rotate.

9 . The two-dimensional tilt adjustment mechanism according to claim 1 , wherein a sealing cover ( 7 ) for sealing is installed on the fixed seat ( 6 ). 10 .