Piezoelectric fast mirror assembly tool

Abstract

The application belongs to the auxiliary tool of piezoelectric driving device, and particularly relates to a piezoelectric fast mirror assembly tool, which comprises a base provided with a first limiting part for constraining a base of the piezoelectric fast mirror; a first positioning assembly; the base is provided with a second limiting part, and the first positioning assembly is provided with a third limiting part; one of the second limiting part and the third limiting part comprises a first limiting wall for preventing the piezoelectric device from translating in any direction in a first plane and not limiting the rotation of the piezoelectric device around the first direction; the other one comprises a second limiting wall for preventing the piezoelectric device from translating in any direction in the first plane and preventing the rotation of the piezoelectric device around the first direction; through the differential design of the second limiting part and the third limiting part, the piezoelectric device is only subjected to circumferential limiting constraint in the insertion and compression process, so that the accurate positioning of the piezoelectric device in the first plane is ensured, and the risk of forced torsion or shearing of the piezoelectric device due to circumferential misplacement when the piezoelectric device is axially pressed is eliminated.

Description

Technical Field

[0001] This invention pertains to auxiliary tooling for piezoelectric drive equipment, specifically relating to a piezoelectric fast-reflecting mirror assembly tooling. Background Technology

[0002] A piezoelectric fast-reflecting mirror is driven by multiple elongated piezoelectric elements, enabling axial translation and multi-degree-of-freedom rotation. The assembly challenge of a piezoelectric fast-reflecting mirror lies in the bonding between the elongated piezoelectric elements and the base. It is crucial to ensure the positional accuracy of the piezoelectric elements while avoiding excessive constraints that could cause torsional or shear stresses, thus preventing damage to the piezoelectric elements during assembly. Current technologies lack methods for achieving high-precision assembly of elongated piezoelectric elements while meeting these requirements. Summary of the Invention

[0003] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a piezoelectric fast-reflecting mirror assembly fixture that can ensure assembly accuracy while avoiding damage to piezoelectric devices due to excessive constraints.

[0004] To achieve the above and other related objectives, the present invention provides a piezoelectric fast-reflecting mirror assembly fixture, comprising: The base has a first limiting part for constraining the base of the piezoelectric fast reflector. The first limiting part is configured to: prevent the base from translating at least to a first side of the base along a first direction, prevent the base from rotating about the first direction, and prevent the base from translating in any direction within a first plane; the first direction is the axial direction of the base, and the first plane is perpendicular to the first direction. A first positioning component is located on a second side of the base opposite to the first side, and the first positioning component is fixedly disposed relative to the base in a detachable manner. The base is provided with a second limiting part, and the first positioning component is provided with a third limiting part; the second limiting part and the third limiting part are arranged facing each other along the first direction; The second limiting portion is configured to prevent the piezoelectric device of the piezoelectric fast-reflecting mirror from translating toward a first side of the base along the first direction; one of the second limiting portion and the third limiting portion includes a first limiting wall that prevents the piezoelectric device from translating in any direction within the first plane and does not restrict the rotation of the piezoelectric device about the first direction; the other includes a second limiting wall that prevents the piezoelectric device from translating in any direction within the first plane and prevents the rotation of the piezoelectric device about the first direction. It also includes a clamping unit that cooperates with the first positioning component to apply a clamping force along the first direction toward the first side of the base to the piezoelectric device.

[0005] In an optional embodiment of the present invention, the first limiting wall is perpendicular to the first plane, and the projection of the first limiting wall along the first direction onto the first plane is the circumcircle of each edge of the piezoelectric device, or a partial section of the circumcircle of each edge of the piezoelectric device.

[0006] In an optional embodiment of the present invention, the second limiting wall is perpendicular to the first plane, and the second limiting wall abuts against each side wall of the piezoelectric device.

[0007] In an optional embodiment of the present invention, the second limiting wall includes an arcuate wall that abuts against one of the side walls of the piezoelectric device in a line contact manner, and a plurality of straight walls that abut against the remaining side walls of the piezoelectric device in a surface contact manner.

[0008] In an optional embodiment of the present invention, the second limiting wall is disposed on the first positioning component, the first positioning component includes a first part and a second part that are separately disposed, the first part is detachably fixed relative to the base, and the second part is detachably fixed relative to a central rod disposed on the base; the arc-shaped wall is disposed on the second part, and the straight wall is disposed on the first part.

[0009] In an optional embodiment of the present invention, a second positioning component is further included, which is located between the base and the first positioning component along the first direction; the second positioning component is provided with a third limiting wall, which is configured to prevent the piezoelectric device from translating in any direction in the first plane, and does not restrict the rotation of the piezoelectric device around the first direction.

[0010] In an optional embodiment of the present invention, the third limiting wall is perpendicular to the first plane, and the projection of the third limiting wall along the first direction onto the first plane is the circumcircle of each edge of the piezoelectric device, or a partial section of the circumcircle of each edge of the piezoelectric device.

[0011] In an optional embodiment of the present invention, the second positioning component is movably disposed relative to the base along the first direction, and a locking unit is provided on the movement path of the second positioning component. The locking unit is configured to hold the second positioning component at any position on the movement path and to release the second positioning component from any position on the movement path.

[0012] In an optional embodiment of the present invention, the first positioning component is connected to the base via a guide post arranged along a first direction, the second positioning component is slidably connected to the guide post, and the locking unit includes a clamp sleeved on the guide post. The clamp includes a first half and a second half, and the first half and the second half are connected by a detachably arranged fastener.

[0013] In an optional embodiment of the present invention, the first limiting portion includes a groove adapted to the contour of the base, and the sidewall of the groove includes at least one plane that contacts a straight surface on the side of the base.

[0014] In an optional embodiment of the present invention, the clamping unit includes an adapter block, a pressure rod, a compression spring, and a screw. The adapter block is detachably fixed to the first positioning component. The pressure rod is slidably connected to the adapter block along the first direction. The pressure rod is disposed opposite to the end face of the piezoelectric device. The end of the pressure rod opposite to the piezoelectric device is spherical. The screw is screwed to the adapter block along the first direction. The compression spring is disposed between the screw and the pressure rod.

[0015] The technical advantages of this invention are as follows: Through the differentiated structural design of the second and third limiting parts—one of which is a first limiting wall that restricts only in-plane translation but not axial rotation, and the other a second limiting wall that simultaneously restricts both in-plane translation and axial rotation—the piezoelectric device is subject to only one circumferential limiting constraint during insertion and clamping. The other limiting wall provides translational positioning and releases circumferential rotational freedom only in the plane. This ensures precise positioning of the piezoelectric device within the first plane through the synergistic effect of the dual limiting walls, while avoiding interference between multiple circumferential limits due to tooling manufacturing errors or assembly deviations. This fundamentally eliminates the risk of the piezoelectric device being forcibly torn or sheared due to circumferential misalignment under axial pressure, effectively protecting the elongated piezoelectric device from harmful internal stress damage during bonding and curing. Attached Figure Description

[0016] Figure 1 This is a perspective view of the piezoelectric fast-reflecting mirror assembly tooling provided in an embodiment of the present invention; Figure 2 This is a cross-sectional view of the piezoelectric fast-reflecting mirror assembly tooling provided in an embodiment of the present invention; Figure 3 yes Figure 2 AA section view; Figure 4 yes Figure 2 BB section view; Figure 5 yes Figure 2 CC section view; Figure 6 yes Figure 2 DD sectional view; Figure 7 yes Figure 2 EE sectional view; Figure 8 This is a perspective view of a piezoelectric fast-reflecting mirror assembly tooling provided in an alternative embodiment of the present invention; Explanation of reference numerals in the attached drawings: 10, base; 11, groove; 111, plane; 20, base; 201, straight part; 21, center rod; 22, first limiting wall; 30, piezoelectric device; 40, first positioning assembly; 41, first part; 411, straight wall; 42, second part; 421, arc-shaped wall; 50, second positioning assembly; 51, third limiting wall; 60, guide post; 70, locking unit; 71, first half; 72, second half; 73, fastener; 80, clamping unit; 81, adapter block; 82, pressure rod; 83, screw; 84, compression spring. Detailed Implementation

[0017] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0018] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the illustrations only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0019] Please see Figures 1 to 7As shown, an embodiment of the present invention provides a piezoelectric fast-reflecting mirror assembly fixture, which includes a base 10, a first positioning component 40, and a clamping unit 80. The base 10 is provided with a first limiting portion for constraining the base 20 of the piezoelectric fast-reflecting mirror. The first limiting portion is configured to: prevent the base 20 from translating along a first direction X toward at least a first side of the base 10; prevent the base 20 from rotating around the first direction X; and prevent the base 20 from translating in any direction within a first plane P. The first direction X is the axial direction of the base 20, and the first plane P is perpendicular to the first direction X. The first positioning component 40 is located on a second side of the base 10 opposite to the first side, and the first positioning component 40 is detachably fixed relative to the base 10. The base 20 is provided with a second limiting portion, the first... The positioning component 40 is provided with a third limiting portion; the second limiting portion and the third limiting portion are arranged opposite each other along the first direction X; the second limiting portion is configured to prevent the piezoelectric device 30 of the piezoelectric fast-reflecting mirror from translating along the first direction X toward the first side of the base 10; one of the second limiting portion and the third limiting portion includes a first limiting wall 22 that can prevent the piezoelectric device 30 from translating in any direction within the first plane P and does not restrict the rotation of the piezoelectric device 30 around the first direction X; the other includes a second limiting wall that can prevent the piezoelectric device 30 from translating in any direction within the first plane P and prevent the rotation of the piezoelectric device 30 around the first direction X; the clamping unit 80 cooperates with the first positioning component 40 to apply a clamping force to the piezoelectric device 30 along the first direction X toward the first side of the base 10.

[0020] During assembly, the base 20 of the piezoelectric fast reflector is first positioned and constrained by the first limiting part of the base 10 to restrict its axial translation, circumferential rotation and in-plane movement; then the first positioning component 40 is detachably fixed to the second side of the base 10, so that the second limiting part on the base 20 and the third limiting part on the first positioning component 40 are axially aligned; next, the piezoelectric device 30 with adhesive coated on the bottom is inserted axially between the second limiting part and the third limiting part; finally, the clamping unit 80 applies an axial clamping force toward the base 20 to the piezoelectric device 30 to complete the bonding and curing. Based on the above assembly process, this invention employs a differentiated structural design between the second and third limiting parts. One part is equipped with a first limiting wall 22 that restricts only in-plane translation but not axial rotation, while the other part is equipped with a second limiting wall that simultaneously restricts both in-plane translation and axial rotation. This ensures that the piezoelectric device 30 is only subject to one circumferential limiting constraint during insertion and clamping, while the other limiting wall only provides translational positioning and releases circumferential rotational freedom within the plane. Thus, the synergistic effect of the dual limiting walls ensures the precise positioning of the piezoelectric device 30 within the first plane P, while avoiding interference between multiple circumferential limits due to tooling manufacturing errors or assembly deviations. This fundamentally eliminates the risk of the piezoelectric device 30 being forcibly torn or sheared due to circumferential misalignment when subjected to axial pressure, effectively protecting the elongated piezoelectric device 30 from harmful internal stress damage during the bonding and curing process.

[0021] Please see Figure 4 As shown, in an optional embodiment of the present invention, the first limiting wall 22 is perpendicular to the first plane P, and the projection of the first limiting wall 22 along the first direction X onto the first plane P is the circumcircle of each edge of the piezoelectric device 30, or a partial section of the circumcircle of each edge of the piezoelectric device 30. In this embodiment, due to the projection of the outer circle, the first limiting wall 22 forms an arc-shaped or arc-segment-shaped gap fit with the piezoelectric device 30 in the circumferential direction. Therefore, when the piezoelectric device 30 is inserted and pressed, the limiting wall can only restrict its translation in any direction in the vertical plane, but allows it to rotate freely around its own axis. This ensures from a geometric structure perspective that the function of limiting translation but not rotation is accurately realized. At the same time, there is no fixed circumferential correspondence between the arc segment direction of the outer circle projection and the edge direction of the piezoelectric device 30. Even if there are manufacturing or assembly deviations in the tooling, the piezoelectric device 30 can adaptively adjust the circumferential angle within the arc-shaped limiting wall, and will not be forced to twist by the local protrusions or right angle jamming between the edge and the limiting wall. This further reduces the risk of shear internal stress generated by circumferential interference during the bonding and curing process of the piezoelectric device 30. Under the premise of ensuring planar positioning accuracy, the process tolerance of the assembly process and the safety of the piezoelectric device 30 are significantly improved.

[0022] Please see Figure 7As shown, in an optional embodiment of the present invention, the second limiting wall is perpendicular to the first plane P, and the second limiting wall abuts against each side wall of the piezoelectric device 30. In this embodiment, the direct contact between the second limiting wall and the multiple sidewalls of the piezoelectric device 30 forms a definite and unique angular positioning constraint on the piezoelectric device 30 in the circumferential direction. This not only restricts its translation in any direction within the first plane P, but also completely prevents its rotation around its own axis, thus providing a precise circumferential reference for the piezoelectric device 30. At the same time, the second limiting wall works in conjunction with the aforementioned first limiting wall 22, which only provides arc-shaped circumferential circle limitation. The first limiting wall 22 releases the circumferential rotational degree of freedom to eliminate the risk of interference, while the second limiting wall achieves a unique and clear circumferential locking through multi-face contact. This makes the entire tooling form a positioning method for the piezoelectric device 30 with one precise orientation and one floating adaptive position. This ensures the absolute accuracy of the circumferential angle of the piezoelectric device 30 after assembly and avoids the over-constraint problem that may occur due to the use of rigid multi-face contact in both places. Structurally, this completely eliminates the risk of damage to the piezoelectric device 30 caused by tooling deviation due to torsion or shear.

[0023] Please see Figure 7 As shown, in an optional embodiment of the present invention, the second limiting wall includes an arc-shaped wall 421 that abuts against one of the side walls of the piezoelectric device 30 in a line contact manner, and a plurality of straight walls 411 that abut against the remaining side walls of the piezoelectric device 30 in a surface contact manner. During assembly, during the axial insertion of the piezoelectric device 30, the arc-shaped wall 421 and the side walls are in line contact rather than surface contact, which significantly reduces the initial contact area and insertion resistance, allowing the piezoelectric device 30 to slide more smoothly into the constraint area of ​​the second limiting wall, avoiding jamming or scratch damage caused by large-area surface contact; at the same time, the arc-shaped wall 421, while providing circumferential limiting, does not exert excessively strong forced contact constraint on the side wall because its contact form is a single line rather than a full-surface fit, while the surface contact with the remaining side walls... When the straight wall 411 works together, it can achieve precise positioning of the piezoelectric device 30 in the first plane P and unique locking of the circumferential angle through multi-face contact. At the same time, it can release the local over-constraint that may be caused by tooling processing errors or dimensional tolerances of the piezoelectric device 30 by utilizing the line contact characteristics of the arc wall 421. This avoids the additional bending moment or shear stress caused by the side wall being forced to be excessively compressed. Under the premise of ensuring the reliability of circumferential positioning, it further reduces the internal stress of assembly, while improving the convenience of assembly operation and adaptability to device size fluctuations.

[0024] Please see Figure 2 , 7As shown, in an optional embodiment of the present invention, the second limiting wall is disposed on the first positioning component 40. The first positioning component 40 includes a first part 41 and a second part 42 that are separately disposed. The first part 41 is detachably fixed relative to the base 10, and the second part 42 is detachably fixed relative to a central rod 21 disposed on the base 20. The arc-shaped wall 421 is disposed on the second part 42, and the straight wall 411 is disposed on the first part 41. During assembly, the first part 41 can be installed first, and then the piezoelectric device 30 with adhesive applied to the bottom can be inserted axially into the limiting area formed by the straight wall 411 of the first part 41. Subsequently, the second part 42 is installed, ensuring its arc-shaped wall 421 forms line contact with the corresponding side wall of the piezoelectric device 30. This step-by-step assembly method significantly reduces the insertion difficulty and alignment accuracy requirements when the piezoelectric device 30 passes through the complete second limiting wall in one go. It avoids the risk of jamming or scratching caused by the simultaneous contact of the integral limiting wall with all side walls of the piezoelectric device 30. Simultaneously, the second part 42 is independently positioned using the central rod 21, further improving the consistency of the relative position between the arc-shaped wall 421 and the side wall of the piezoelectric device 30. While ensuring the positioning accuracy of multiple surfaces, the convenience and success rate of assembly operations are greatly improved. It should be noted that the core concept of this invention is not limited to the specific allocation method mentioned above. The positions of the first limiting wall 22 and the second limiting wall can be completely interchanged. That is, the arc-shaped wall 421 and the straight wall 411 can be respectively configured on the base 20 or the first positioning component 40 according to the actual tooling layout. As long as the two are aligned in the axial direction and the cooperative positioning logic of "one releases rotation and the other locks rotation" is used, the torsional and shear internal stress caused by over-constraint can be completely eliminated while ensuring the planar position accuracy and circumferential angular accuracy of the piezoelectric device 30, thus achieving a safe, accurate and efficient assembly effect.

[0025] Please see Figure 1 , Figure 6As shown, in an optional embodiment of the present invention, a second positioning component 50 is further included. The second positioning component 50 is located between the base 10 and the first positioning component 40 along the first direction X. The second positioning component 50 is provided with a third limiting wall 51, which is configured to prevent the piezoelectric device 30 from translating in any direction within the first plane P, and does not restrict the rotation of the piezoelectric device 30 around the first direction X. When the piezoelectric device 30 is long, relying solely on the second limiting part at the base 20 and the third limiting part at the first positioning component 40 to position both ends of the piezoelectric device 30, the middle part is prone to flexural deformation or lateral swaying under its own weight and clamping force, affecting the uniformity of the adhesive layer thickness and the final assembly accuracy. The second positioning component 50 provides auxiliary support in the middle of the piezoelectric device 30, and its third limiting wall 51 also adopts a constraint logic that restricts translation but not rotation, thus applying a vertical plane positioning constraint to the piezoelectric device 30 from the middle to suppress its rotation. The flexibility and swaying ensure the straightness and positional accuracy of the elongated piezoelectric device 30 along the axial direction. Because it does not restrict axial rotation and maintains consistency with the first limiting wall 22 in front, the floating characteristic avoids the need for additional circumferential constraints in the middle part, which would lead to multiple points of over-constraint. Thus, while effectively improving the assembly rigidity and stability of the slender piezoelectric device 30, it still maintains the low internal stress positioning structure of the overall tooling with one circumferential lock and multiple circumferential floating points. This ensures that the long piezoelectric device 30 is accurately positioned and not damaged by harmful shear or torsional stress during the bonding and curing process.

[0026] In the technical solution of this invention, the second positioning component 50 is an optional auxiliary component and not a necessary element for achieving high-precision, low-stress assembly of the piezoelectric device 30. When the axial length of the piezoelectric device 30 is short and its own bending stiffness is sufficient to resist the deformation caused by its own weight deflection and clamping force during assembly, the second positioning component 50 can be omitted. Only by relying on the coordinated action of the second limiting part at the base 20 and the third limiting part at the first positioning component 40, through a positioning logic of one circumferential locking and one circumferential floating, can the precise positioning of the piezoelectric device 30 in the vertical plane and the unique circumferential angular locking be ensured, while completely eliminating the torsional and shear internal stresses caused by over-constraint. Figure 8 The embodiment shown without the second positioning component 50 has a more streamlined structure, simpler assembly steps, and lower tooling manufacturing costs, while still fully meeting the high-precision assembly requirements of the short-sized piezoelectric device 30.

[0027] Please see Figure 6As shown, in an optional embodiment of the present invention, the third limiting wall 51 is perpendicular to the first plane P, and the projection of the third limiting wall 51 along the first direction X onto the first plane P is the circumcircle of each edge of the piezoelectric device 30, or a partial section of the circumcircle of each edge of the piezoelectric device 30. In this embodiment, when the second positioning component 50 provides auxiliary support to the middle part of the elongated piezoelectric device 30, the arc-shaped or arc-segment projection limiting wall forms a gap fit with the piezoelectric device 30 in terms of geometry. This allows the third limiting wall 51 to only constrain the translation of the piezoelectric device 30 in any direction in the vertical plane, while allowing it to rotate freely around its own axis. Even with the intermediate auxiliary support point, the piezoelectric device 30 is only subject to one circumferential locking constraint in the axial direction, while the remaining limiting walls release rotational degrees of freedom. This avoids mutual interference in the circumferential direction due to manufacturing errors or installation deviations of multiple limiting walls. At the same time, the arc projection structure has a larger assembly tolerance space than the edge-fitting structure, reducing the sensitivity of the middle positioning component to the dimensional tolerance of the piezoelectric device 30. While effectively suppressing the deflection deformation of the middle part of the slender piezoelectric device 30 and ensuring axial straightness, it completely eliminates the risk of torsional and shear internal stress caused by the superposition of multiple circumferential constraints.

[0028] Please see Figure 1 , Figure 2 As shown, in an optional embodiment of the present invention, the second positioning component 50 is movably disposed relative to the base 10 along the first direction X, and a locking unit 70 is provided on the moving path of the second positioning component 50. The locking unit 70 is configured to be able to hold the second positioning component 50 at any position on the moving path and to release the second positioning component 50 from any position on the moving path. In this embodiment, when it is necessary to assemble piezoelectric devices 30 with different axial lengths, there is no need to replace or redesign the entire tooling. Simply slide the second positioning component 50 along the axial direction to a suitable height position corresponding to the middle of the piezoelectric device 30, and then reliably fix it by the locking unit 70. This allows the third limiting wall 51 to accurately act on the middle support point of the piezoelectric devices 30 with different lengths. This position-adjustable design fundamentally solves the limitation that fixed auxiliary supports can only adapt to devices of a single length. It enables the same tooling to flexibly meet the assembly requirements of piezoelectric quick-reflecting mirrors of various specifications. At the same time, the ability of the locking unit 70 to maintain any position ensures that the second positioning component 50 will not move axially during the pressing and curing process, and always provides a stable and reliable constraint for the middle of the piezoelectric device 30. This greatly improves the versatility and applicability of the tooling and reduces the tooling manufacturing cost and management complexity in multi-variety production.

[0029] Please see Figure 2 , Figure 5As shown, in an optional embodiment of the present invention, the first positioning component 40 is connected to the base 10 via a guide post 60 arranged along the first direction X, the second positioning component 50 is slidably connected to the guide post 60, and the locking unit 70 includes a clamp sleeved on the guide post 60. The clamp includes a first half 71 and a second half 72, and the first half 71 and the second half 72 are connected by a detachably arranged fastener 73. During assembly, the guide post 60 not only provides a precise axial installation reference for the first positioning component 40, but also directly acts as a sliding guide rail for the second positioning component 50, ensuring that the second positioning component 50 always remains strictly coaxial with the first positioning component 40 when it moves and adjusts along the axial direction, avoiding additional radial force between the third limiting wall 51 and the piezoelectric device 30 due to misalignment; while the clamp-type locking unit 70 is sleeved on the guide post 60. When the second positioning component 50 slides to the target position, it is only necessary to tighten the fastener 73 to make the first half 71 and the second half 72 clamp the guide post 60, that is... A uniform and reliable locking force can be applied to the second positioning component 50 at any height position. This prevents the guide post 60 from deforming due to uneven load caused by concentrated locking force, and also prevents the second positioning component 50 from undergoing slight axial displacement during the locking process, thus ensuring the positioning accuracy after adjustment. At the same time, the lock can be quickly released by loosening the fastener 73, allowing the second positioning component 50 to slide freely along the guide post 60 again. This enables efficient, convenient, and high-precision position switching of piezoelectric devices 30 of different lengths, significantly enhancing the tooling's adjustment flexibility, ease of operation, and long-term stability.

[0030] Please see Figure 3As shown, in an optional embodiment of the present invention, the first limiting portion includes a groove 11 adapted to the contour of the base 20, and the sidewall of the groove 11 includes at least one plane 111 that contacts a straight portion 201 on the side of the base 20. During assembly, after the base 20 is embedded in the groove 11, a surface contact fit is formed between the plane and the straight part 201 on the side of the base 20. Through the contact between the planes, a definite and reliable anti-rotation constraint is applied to the base 20 in the circumferential direction, which can effectively prevent the base 20 from rotating around its own axis. At the same time, the overall contour of the groove 11 is adapted to the shape of the base 20, which together restricts the translation of the base 20 in any direction in the vertical plane and the axial translation with the first side of the base 10. Thus, the precise positioning of the base 20 with multiple degrees of freedom is achieved simultaneously with a single groove 11 structure. Compared with the method of relying on multiple dispersed limiting parts or friction locking, this surface contact anti-rotation design has higher circumferential positioning rigidity and torsional resistance, ensuring that the base 20 maintains a stable posture during the pressing and bonding curing of the piezoelectric device 30. It avoids the piezoelectric device 30 assembly reference offset caused by the slight rotation of the base 20, which would affect the final optical pointing accuracy of the fast reflector. This provides a solid and stable installation foundation for the high-precision positioning of the piezoelectric device 30.

[0031] Please see Figure 2As shown, in an optional embodiment of the present invention, the clamping unit 80 includes an adapter block 81, a pressure rod 82, a compression spring 84, and a screw 83. The adapter block 81 is detachably fixed to the first positioning component 40. The pressure rod 82 is slidably connected to the adapter block 81 along the first direction X. The pressure rod 82 is disposed opposite to the end face of the piezoelectric device 30. The end of the pressure rod 82 opposite to the piezoelectric device 30 is spherical. The screw 83 is screwed to the adapter block 81 along the first direction X. The compression spring 84 is disposed between the screw 83 and the pressure rod 82. The operator can precisely control the compression of the spring 84 by rotating the screw 83, quantitatively converting the screw 83's helical feed into an elastic force acting on the pressure rod 82. This achieves precise adjustment and stable maintenance of the axial clamping force on the piezoelectric device 30, ensuring a uniform and moderate pressure environment for the adhesive layer during curing. This prevents damage to the piezoelectric device 30 due to excessive axial force caused by rigid pressure or uncontrollable torque. Simultaneously, the spring 84 first converts the rotational torque of the screw 83 into a linear axial force in the force transmission path, achieving initial motion decoupling and eliminating torsional interference from the screw 83's rotation on the pressure rod 82. Subsequently, the end of the pressure rod 82... The spherical surface forms a point contact with the end face of the piezoelectric device 30. During the clamping process, it automatically adapts to the slight angular deviation and radial misalignment between the axes of the two, realizing the second stage of motion decoupling. This cuts off the transmission path of possible circumferential deflection or radial offset of the pressure rod 82 to the piezoelectric device 30. Through the two-stage decoupling mechanism formed by the compression spring 84 and the spherical surface, the rotational action of the screw 83 is completely isolated. The final load transmitted to the piezoelectric device 30 is only the axial clamping force with controllable magnitude and pure direction. Thus, under the premise of ensuring the bonding quality, the possibility of the piezoelectric device 30 bearing torsional stress or additional bending moment during the clamping process is completely eliminated from both the force source end and the contact end.

[0032] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

[0033] Throughout this description, numerous specific details, such as examples of components and / or methods, are provided to provide a complete understanding of embodiments of the invention. However, those skilled in the art will recognize that embodiments of the invention may be practiced without one or more of these specific details or by other devices, systems, components, methods, parts, materials, components, etc. In other instances, well-known structures, materials, or operations have not been specifically shown or described in detail to avoid obscuring aspects of embodiments of the invention.

Claims

1. A piezoelectric fast-reflecting mirror assembly fixture, characterized in that, include: The base (10) is provided with a first limiting part for constraining the base (20) of the piezoelectric fast reflector. The first limiting part is configured to: prevent the base (20) from translating at least to a first side of the base (10) along a first direction (X), prevent the base (20) from rotating about the first direction (X), and prevent the base (20) from translating in any direction within a first plane (P); the first direction (X) is the axial direction of the base (20), and the first plane (P) is perpendicular to the first direction (X); The first positioning component (40) is located on the second side of the base (10) opposite to the first side, and the first positioning component (40) is fixedly disposed relative to the base (10) in a detachable manner; The base (20) is provided with a second limiting part, and the first positioning component (40) is provided with a third limiting part; the second limiting part and the third limiting part are arranged opposite each other along the first direction (X); The second limiting portion is configured to prevent the piezoelectric device (30) of the piezoelectric fast reflector from translating toward the first side of the base (10) along the first direction (X); one of the second limiting portion and the third limiting portion includes a first limiting wall (22) that prevents the piezoelectric device (30) from translating in any direction within the first plane (P) and does not restrict the rotation of the piezoelectric device (30) around the first direction (X); the other includes a second limiting wall that prevents the piezoelectric device (30) from translating in any direction within the first plane (P) and prevents the rotation of the piezoelectric device (30) around the first direction (X); It also includes a clamping unit (80) that cooperates with the first positioning component (40) to apply a clamping force to the piezoelectric device (30) along the first direction (X) toward the first side of the base (10). The first limiting wall (22) is perpendicular to the first plane (P). The projection of the first limiting wall (22) along the first direction (X) onto the first plane (P) is the circumcircle of each edge of the piezoelectric device (30), or a partial section of the circumcircle of each edge of the piezoelectric device (30). The second limiting wall is perpendicular to the first plane (P), and the second limiting wall abuts against each side wall of the piezoelectric device (30); The second limiting wall includes an arcuate wall (421) that abuts against one of the side walls of the piezoelectric device (30) in a line contact manner, and a plurality of straight walls (411) that abut against the remaining side walls of the piezoelectric device (30) in a surface contact manner.

2. The piezoelectric fast-reflecting mirror assembly fixture according to claim 1, characterized in that, The second limiting wall is disposed on the first positioning component (40). The first positioning component (40) includes a first part (41) and a second part (42) that are separately disposed. The first part (41) is fixedly disposed relative to the base (10) in a detachable manner, and the second part (42) is fixedly disposed relative to a central rod disposed on the base (20) in a detachable manner. The arc-shaped wall (421) is disposed on the second part (42), and the straight wall (411) is disposed on the first part (41).

3. The piezoelectric fast-reflecting mirror assembly fixture according to claim 1, characterized in that, It also includes a second positioning component (50), which is located between the base (10) and the first positioning component (40) along the first direction (X); the second positioning component (50) is provided with a third limiting wall (51), which is configured to prevent the piezoelectric device (30) from translating in any direction within the first plane (P) and does not restrict the rotation of the piezoelectric device (30) about the first direction (X).

4. The piezoelectric fast-reflecting mirror assembly fixture according to claim 3, characterized in that, The third limiting wall (51) is perpendicular to the first plane (P). The projection of the third limiting wall (51) along the first direction (X) onto the first plane (P) is the circumcircle of each edge of the piezoelectric device (30), or a partial section of the circumcircle of each edge of the piezoelectric device (30).

5. The piezoelectric fast-reflecting mirror assembly fixture according to claim 3, characterized in that, The second positioning component (50) is movably disposed relative to the base (10) along the first direction (X). A locking unit (70) is provided on the movement path of the second positioning component (50). The locking unit (70) is configured to hold the second positioning component (50) at any position on the movement path and to release the second positioning component (50) from any position on the movement path.

6. The piezoelectric fast-reflecting mirror assembly fixture according to claim 5, characterized in that, The first positioning component (40) is connected to the base (10) via a guide post (60) arranged along the first direction (X), the second positioning component (50) is slidably connected to the guide post (60), and the locking unit (70) includes a clamp sleeved on the guide post (60). The clamp includes a first half (71) and a second half (72), and the first half (71) and the second half (72) are connected by a detachably arranged fastener (73).

7. The piezoelectric fast-reflecting mirror assembly fixture according to claim 1, characterized in that, The first limiting part includes a groove (11) adapted to the contour of the base (20), and the sidewall of the groove (11) includes at least one plane (111) that contacts a straight part (201) on the side of the base (20).

8. The piezoelectric fast-reflecting mirror assembly fixture according to claim 1, characterized in that, The clamping unit (80) includes an adapter block (81), a pressure rod (82), a compression spring (84), and a screw (83). The adapter block (81) is detachably fixed to the first positioning component (40). The pressure rod (82) is slidably connected to the adapter block (81) along the first direction (X). The pressure rod (82) is disposed opposite to the end face of the piezoelectric device (30). The end of the pressure rod (82) opposite to the piezoelectric device (30) is spherical. The screw (83) is screwed to the adapter block (81) along the first direction (X). The compression spring (84) is disposed between the screw (83) and the pressure rod (82).

Images