Two-dimensional inclination adjusting mechanismTechnical 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 inposition 2A, in accordance with an embodiment of the present invention.
Wherein the reference numerals include: the device comprises a movingplate 1, afirst adjusting module 1A, asecond adjusting module 1B, a universalball joint module 1C, afixing plate 2, anelement 3, arotating assembly 4, aprecision screw rod 5, afixing seat 6, asealing cover 7, a V-shaped block 8, aprecision ball head 9, abearing 10, abearing locking nut 11, a slidingblock supporting seat 12, aset screw 13, a slidingblock 14, a threadedsleeve 15, auniversal ball joint 16 and a longround 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 movingplate 1 for fixing and carrying anelement 3, afixed plate 2 for supporting the movingplate 1, a universalball joint module 1C installed between themoving plate 1 and thefixed plate 2 for supporting the movingplate 1, afirst adjusting module 1A and asecond adjusting module 1B symmetrically installed on the movingplate 1 for adjusting an angle of themoving plate 1;
thefixed plate 2 is arranged below the movingplate 1; thefixed plate 2 is connected with themoving plate 1 through a universalspherical hinge module 1C, afirst adjusting module 1A and asecond adjusting module 1B; thefirst adjusting module 1A, the universalspherical hinge module 1C and thesecond adjusting module 1B are sequentially arranged at the triangle of the movingplate 1; a connecting line of thefirst adjusting module 1A and the universalspherical hinge module 1C is taken as an X axis; a connecting line of thesecond adjusting module 1B and the universalspherical hinge module 1C is used as a Y axis; the X axis and the Y axis are orthogonal;
the internal structures of the first regulatingmodule 1A and the second regulatingmodule 1B are completely the same;
as shown in fig. 2 and 3, the first orsecond conditioning module 1A or 1B includes: the device comprises arotating assembly 4, aprecision screw rod 5, a fixedseat 6, asealing cover 7, a V-shaped block 8, aprecision ball head 9, abearing 10, abearing locking nut 11, a slidingblock supporting seat 12, aset screw 13, asliding block 14 and a threadedsleeve 15.
Therotation assembly 4 is used to control aprecision screw 5. One end of the rotatingcomponent 4 is in interference fit with theprecision screw 5 and is locked and fixed through a jackscrew; the other end of the rotatingassembly 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.
Theprecision screw 5 is used to control the V-block 8. Theprecision screw 5 is respectively matched and installed with the threadedsleeve 15 and thebearing 10. Theprecision screw 5 is of a stepped shaft structure; the connecting section of theprecision screw 5 and the threadedsleeve 15 is provided with an external thread matched with the threadedsleeve 15; a shaft shoulder for axially positioning thebearing 10 and an external thread for installing abearing locking nut 11 are arranged at the connecting section of theprecision screw rod 5 and thebearing 10; aprecision screw 5 extends from themounting 6 for connection to the rotatingassembly 4.
Thefixing seat 6 is used for supporting the two-dimensional inclination adjusting mechanism. Thefixing seat 6 is installed on thefixing plate 2.
Thesealing cover 7 is used for sealing. The sealingcover 7 is arranged on the fixedseat 6.
The V-shaped block 8 is used for controlling theprecision ball 9. The V-shaped block 8 is arranged between theprecision ball 9 and thesliding block 14. The V-shaped block 8 is restrained by thesliding block 14 and moves linearly along the groove on the slidingblock supporting seat 12 together; as shown in fig. 4, the central axis of the V-block on thefirst adjustment module 1A is parallel to the X-axis direction, and the central axis of the V-block on thesecond adjustment module 1B is parallel to the Y-axis direction.
Theprecision ball 9 is used for matching with a V-shaped groove on the V-shaped block 8. Theprecision ball 9 is arranged on themotion plate 1. In one embodiment of the present invention, theprecision ball 9 is fixedly mounted on the movingplate 1 by screw threads.
The bearing 10 serves to reduce the rotational resistance of theprecision screw 5. Thebearing 10 is mounted on aslider support base 12. Thebearing 10 is a bearing with unchanged radial play; the outer ring of thebearing 10 and the bearing mounting hole on the slidingblock supporting seat 12 adopt an interference fit mode and are locked and fixed through a jackscrew. In one embodiment of the present invention, thebearing 10 is a lightly preloaded deep groove ball bearing to ensure no radial clearance.
The bearinglock nut 11 is used to lock theprecision screw 5 and thebearing 10. The bearinglock nut 11 is mounted on theprecision screw 5 by a thread.
Theslide block support 12 is used for restricting the movement of the V-shapedblock 8. The slideblock supporting seat 12 is installed on the fixedseat 6. Theslider supporting seat 12 is provided with anoblong hole 17, and theslider supporting seat 12 is fixed on the fixedseat 6 through a screw passing through theoblong hole 17; the width of theoblong 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; theoblong hole 17 and the screw are in clearance fit, so that the slidingblock supporting seat 12 can slide along theoblong hole 17 under the constraint of the screw and cannot rotate.
Theset screw 13 is used to eliminate the gap between theslider 14 and the V-block 8. Theset screw 13 is mounted on theslider support base 12. Theslide block 14 is pushed to be in complete contact with the V-shapedblock 8 through theset screw 13, and no gap exists between theslide block 14 and the V-shapedblock 8.
Theslider 14 is used to reduce the frictional resistance of the V-block 8. Theslider 14 is mounted between the V-block 8 and theslider support 12. Theslide 14 is made of self-lubricating material.
The threadedsleeve 15 is used for cooperating with theprecision screw 5 to control the movement of the V-shapedblock 8. The threadedsleeve 15 is mounted on the V-block 8. Thethread bush 15 and the hole on the V-shapedblock 8 adopt an interference fit mode and are locked and fixed through a jackscrew. The threadedsleeve 15 is connected with theprecision screw 5 through precision threads, so that no gap is formed between the threadedsleeve 15 and theprecision 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 balljoint module 1C, and the universal ball joint 16 is used for ensuring that the movingplate 1 can rotate along the X axis and the Y axis. A universal ball joint 16 is installed between the movingplate 1 and the fixedplate 2.
The working principle of the two-dimensional inclination adjusting mechanism provided by the invention is as follows:
when themotion plate 1 is adjusted to rotate around the X-axis direction, thesecond adjusting module 1B is adjusted, the rotatingassembly 4 in thesecond adjusting module 1B is rotated, the rotatingassembly 4 drives theprecision screw 5 to rotate together, theprecision screw 5 drives the V-shapedblock 8 to do vertical linear motion along the slidingblock 14 through the threadedsleeve 15, and the V-shapedblock 8 drives themotion plate 1 to rotate around the X-axis through theprecision ball head 9, so that the rotation adjustment of theelement 3 in the X-axis direction is completed;
when theprecision ball head 9 in thesecond 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-shapedblock 8 in thesecond adjusting module 1B is along the Y-axis direction, the degree of freedom of the movement of theprecision ball 9 in the Y-axis direction is not limited, so that the locking phenomenon does not occur when the movingplate 1 is adjusted to rotate around the X-axis direction.
When themovement plate 1 is adjusted to rotate around the Y-axis direction, thefirst adjusting module 1A is adjusted, and the working principle of thefirst adjusting module 1A is the same as that of thefirst 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 theprecision 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.