Curved-surface optical element coating positioning device

Abstract

The invention discloses a curved-surface optical element coating positioning device which comprises a base module which comprises a supporting base and an angle adjusting part which are connected through a geometric positioning part; the covering module comprises a bearing frame with a functional hole area and at least two assembly type elastic pressing assemblies; the elastic pressing assembly comprises a thread distance adjusting connecting piece and an elastic force source generating part. The base module and the covering module are accurately matched and assembled through the transition matching part, and the pre-tightening force generated by the elastic force source generating part can be finely adjusted through the thread distance adjusting connecting piece; due to the adoption of a split processing scheme, some complex structures which are integrally formed and difficult to process become simple; as the glass is fixed in a spring pressing block manner, the shaking of the glass in the cavity is reduced, and the risk of scratching is reduced; as the pressing block fixing structure of the rotary spring buckle is adopted, screw locking fixation is replaced; the operation is simplified, the production efficiency is improved, and the labor cost is saved.

Description

Technical Field

[0001] This invention relates to the field of glass coating processing. In particular, it relates to a rapid clamping and positioning structure for large-angle sputtering coating of curved glass. Background Technology

[0002] There are generally two methods for clamping glass on sputtering coating equipment: 1) High-adhesion film bonding: A 1:1 protective film is applied to the electroplating surface of the glass, exposing the area to be electroplated, and a high-adhesion film is used to cover the entire back of the glass. 2) Fixture fixing: The fixture has a contoured groove to hold the glass, with holes cut out to expose the electroplating surface. A cover plate is made on the other side, and screws are tightened onto the fixture to press the glass firmly and ensure a seal. Disadvantages of the high-adhesion film bonding method: Because only the flat area on the back of the glass is bonded with the high-adhesion film to prevent over-plating, other areas are unprotected. Therefore, this method is only suitable for flat glass and not for 2.5D / 3D curved glass coating. Because a large area of ​​the glass is bonded with the high-adhesion film, residual adhesive easily adheres to the glass surface, requiring additional cleaning processes to remove it completely, increasing production costs. Because the adhesive side of the film is in contact with the glass, it is prone to venting and yellowing, resulting in poor glass appearance. Disadvantages of the fixture fixing method: Due to the influence of fixture processing tolerances and glass thickness tolerances, the glass cannot be completely fixed within the fixture cavity. Therefore, a film is needed to prevent scratches, increasing production costs. Because the fixture cavity is parallel to the target plane, it can only be used for coating flat areas of glass, and not for coating inclined areas. Furthermore, the fixture cover plate is fixed with screw threads, which is inconvenient to operate and increases labor costs. Summary of the Invention

[0003] This invention proposes a positioning device for coating curved optical elements.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A positioning device for coating curved optical elements includes: a base module comprising a support base, an angle adjustment part, and a positioning carrier plate part connected by a geometric positioning part; a cover module comprising a bearing frame with functional hole areas and at least two assembled elastic clamping assemblies; the elastic clamping assembly comprising a guide shaft part perpendicular to the workpiece surface, a threaded adjustable distance connector, and an elastic force source generating part; and a multi-degree-of-freedom locking mechanism comprising: a rotary drive part with a flat axis positioning feature; a groove mating part disposed in the base module; and an elastic positioning feedback part comprising a ball head spring unit; wherein the base module and the cover module achieve precise alignment and assembly through a transition mating part, and the preload generated by the elastic force source generating part can be slightly adjusted by the threaded adjustable distance connector.

[0006] In some embodiments, the following technical features are also included:

[0007] The geometric positioning part includes at least one of the following combinations: a boss part and a side groove part with a stepped transition fit; a pin-type positioning part; and a wedge-shaped guide correction part.

[0008] In some embodiments, the following technical features are also included:

[0009] The device is characterized in that the elastic force source generating part includes: a compression spring assembly; a cylindrical elastomer with an anti-deflection guide sleeve; and a spring-screw composite structure that limits the compression stroke by a threaded adjustable coupling.

[0010] In some embodiments, the following technical features are also included:

[0011] The device is characterized in that the multi-degree-of-freedom locking mechanism comprises: a directional rotating shaft with an XY bidirectional locking groove; a rotary actuator equipped with a double-acting ball plunger; and a combined elastic locking system comprising no less than two ball spring constraint units.

[0012] In some embodiments, the following technical features are also included:

[0013] The device is characterized in that the adjustment micro-range of the threaded adjustable connector is designed to be 0.1-0.5mm, and the compression spring is a constant diameter spring.

[0014] In some embodiments, the following technical features are also included:

[0015] The device is characterized in that the angle adjustment section includes: a replaceable wedge-shaped angle correction block; a trapezoidal compensation module with multi-directional rotating shaft connection; and an adjustable tilting substrate with a screw hole array.

[0016] In some embodiments, the following technical features are also included:

[0017] The device is characterized in that the assembled elastic clamping assembly of the bearing frame includes: a beveled guide mounting seat; a movable sub-assembly with a friction-reducing coating, the movable sub-assembly including a beveled block and a circular pressure block; and a pressure application head with a spherical contact surface.

[0018] The present invention also adopts the following technical solutions:

[0019] A method for positioning a curved optical element during coating, characterized by the following steps: Step S1: Constructing a base-cover assembly system using a split prefabricated component; Step S2: Completing the initial positioning of the workpiece using geometric alignment relationships; Step S3: Activating an elastic clamping component to apply multidimensional constraint forces; Step S4: Operating a locking mechanism to form a composite fixing system; Step S5: Completing the sputtering angle adjustment using a target parallel calibration system.

[0020] In some embodiments, the following technical features are also included:

[0021] The split prefabricated assembly includes a glass sheet placement base and an elastic pressing block assembly;

[0022] The glass placement base includes a trapezoidal block and a contouring carrier plate. The trapezoidal block is used to rotate the glass to a specific angle parallel to the plane of the target material, and the contouring carrier plate is provided with positioning grooves to match the curved contour of the glass.

[0023] The elastic pressure block assembly includes a cover plate, an inclined block, and a circular pressure block. The inclined block drives the circular pressure block through equal-height screws and a spring, so that the direction of the elastic force is perpendicular to the glass plane.

[0024] In some embodiments, the following technical features are also included:

[0025] The elastic clamping assembly achieves multi-dimensional constraint through the following structure: the circular clamping block applies vertical pressure to the glass under the action of the spring, making the glass tightly adhere to the plane of the conformal carrier plate; the rotating clamping block engages with the cover plate through the groove of the ball-head plunger, forming a horizontal lock in the X / Y direction; the directional rotating shaft restricts the movement trajectory of the rotating clamping block, allowing switching only between the unlocked position (Y direction) and the locked position (X direction).

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] Because of the adoption of a split-processing approach, some complex structures that are difficult to process as a single piece become simpler; for example, a large-angle inclined undercut structure that a five-axis machining center cannot access; but after being split up, a three-axis machining center can process the fixture.

[0028] Because the glass is fixed by spring blocks, the movement of the glass inside the cavity is reduced, thus reducing the risk of scratches.

[0029] The use of a rotating spring clip clamping block fixing structure, instead of screw fixing, not only simplifies operation, improves production efficiency, and saves labor costs, but also avoids defects caused by screw chipping, thus improving yield. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the fixture structure of the present invention.

[0031] Figure 2 This is a schematic diagram of the glass plate placement base structure of the fixture of the present invention.

[0032] Figure 3 This is a schematic diagram of the assembly of the glass and the contour carrier plate.

[0033] Figure 4 This is a schematic diagram of the assembly and installation of the contour-following carrier plate and the trapezoidal block.

[0034] Figure 5This is a schematic diagram of the elastic pressure block assembly of the fixture of the present invention.

[0035] Figure 6 This is a schematic diagram showing the positioning and assembly of the glass plate mounting base.

[0036] Figure 7 This is a schematic diagram of the positioning and assembly of the elastic pressure block assembly.

[0037] Figure 8 This is a schematic diagram of the locking and positioning assembly of the fixture.

[0038] Figure 9 This is a cross-sectional view of the elastic locking structure of the glass.

[0039] Figure 10 This is a cross-sectional view of the quick-locking structure.

[0040] Figure 11 This is a timing diagram of the positioning method of the present invention.

[0041] Figure 12 This is a sequence diagram of the manufacturing process of the fixture for this invention.

[0042] The reference numerals in the attached figures are explained as follows:

[0043] Glass plate base 1, hanging ear 11, side groove 111, trapezoidal block 12, 12', 12”, 12”' (trapezoidal block 12, trapezoidal block 12', trapezoidal block 12”, trapezoidal block 12”'), positioning groove 121, screw 122, contour carrier plate 13, base plate 14, base plate groove 141, directional pivot 15, directional pivot positioning hole 151, flat position 152, rotating pressure block 16, ball head plunger 17, 17' ( 17, 17', 2, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 ... Detailed Implementation

[0044] The embodiments of the present invention will be described in detail below. It should be emphasized that the following description is merely exemplary and not intended to limit the scope and application of the present invention.

[0045] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as "connected to" another component, it can be directly connected to or indirectly connected to that other component. Furthermore, a connection can be used for both fixing and circuit / signal connectivity.

[0046] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0048] The basic concept of the following embodiments of the present invention is as follows:

[0049] The following embodiments of the present invention provide a coating positioning device for curved optical elements, comprising:

[0050] The base module includes a support base and an angle adjustment part connected by a geometric positioning part; the cover module includes a load-bearing frame with functional hole areas and at least two assembled elastic clamping assemblies; the elastic clamping assembly includes a threaded adjustable pitch connector and an elastic force source generating part;

[0051] The base module and the cover module are precisely aligned and assembled through a transition fit part, and the preload generated by the elastic force source can be slightly adjusted by the threaded adjustable connection.

[0052] The geometric positioning part includes at least one of the following combinations: a boss part and a side groove part with a stepped transition fit; a pin-type positioning part; and a wedge-shaped guide correction part.

[0053] The elastic force source generating unit includes: a compression spring assembly; a cylindrical elastomer with an anti-deflection guide sleeve; and a spring-screw composite structure that limits the compression stroke via a threaded adjustable coupling.

[0054] A multi-degree-of-freedom locking mechanism, comprising: a directional rotating shaft with XY bidirectional locking grooves; a rotary actuator equipped with a double-acting ball plunger; and a combined elastic locking system comprising at least two ball spring constraint units.

[0055] The adjustable pitch range of the threaded adjustable connector is designed to be 0.1-0.5mm, and the compression spring is a constant diameter spring.

[0056] An angle adjustment unit includes: a replaceable wedge-shaped angle correction block; a trapezoidal compensation module with multi-directional rotating shaft connection; and an adjustable tilting substrate with a screw hole array.

[0057] An assembled elastic clamping assembly for a load-bearing frame, the assembled elastic clamping assembly for the load-bearing frame comprising: a beveled guide mounting seat; a movable pair assembly with a friction-reducing coating, the movable pair assembly including a beveled block and a circular pressure block; and a pressure application head with a spherical contact surface.

[0058] like Figure 11 As shown, this embodiment of the invention also provides a method for positioning a coated curved optical element, including: step S1: constructing a base-cover assembly system using a split prefabricated component; step S2: completing the initial positioning of the workpiece using geometric alignment relationships; step S3: activating an elastic clamping component to apply multidimensional constraint forces; step S4: operating a locking mechanism to form a composite fixing system; step S5: completing the sputtering angle adjustment using a target parallel calibration system.

[0059] A method for positioning coated optical elements on curved surfaces, wherein the split prefabricated assembly includes a glass plate placement base 1 and an elastic pressure block assembly 2;

[0060] The glass placement base 1 includes a trapezoidal block and a contouring carrier plate. The trapezoidal block is used to rotate the glass to a specific angle parallel to the plane of the target material, and the contouring carrier plate is provided with a positioning groove to match the curved contour of the glass.

[0061] The elastic pressure block assembly 2 includes a cover plate, an inclined block, and a circular pressure block. The inclined block drives the circular pressure block through equal-height screws and springs, so that the elastic force direction is perpendicular to the glass plane.

[0062] The method for positioning coated optical elements on curved surfaces also includes an elastic clamping assembly that achieves multidimensional constraint through the following structure:

[0063] The circular pressure block applies vertical pressure to the glass under the action of the spring, making the glass fit tightly against the plane of the conformal carrier plate;

[0064] The rotating pressure block engages with the groove of the cover plate through the ball-head plunger, forming a horizontal lock in the X / Y direction;

[0065] The directional pivot restricts the movement trajectory of the rotating block, allowing switching only between the unlocked position (Y direction) and the locked position (X direction).

[0066] Example 1

[0067] like Figure 1 As shown, this embodiment provides a curved optical element coating positioning device, the fixture consisting of two parts: a glass plate base 1 and an elastic pressure block assembly 2.

[0068] like Figure 2As shown, the glass plate base 1 is composed of a hanging lug 11, trapezoidal blocks (trapezoidal block 12, trapezoidal block 12', trapezoidal block 12”, trapezoidal block 12”'), a contour carrier plate 13, a base plate 14, a directional rotating shaft 15, a rotating pressure block 16, and a ball plunger (directional ball plunger 17, pressing ball plunger 17'), which are fixed by screws.

[0069] like Figure 3 , Figure 4 As shown, the mounting ear 11 matches the screw hole of the coating machine, and the fixture is locked onto the machine by screws.

[0070] Trapezoidal blocks (trapezoidal block 12', trapezoidal block 12”, trapezoidal block 12”') are offset to the contour carrier plate 13, causing the glass to rotate to a specific angle, and the coating area 3 is parallel to the target plane.

[0071] The contour carrier plate 13 can be screwed onto the trapezoidal block 12'. The angle of the trapezoidal block 12' is adjusted (only the inclined surface of the trapezoidal block is connected to the contour carrier plate 13 via screws 122; the large flat surface is screwed to the base plate; the other surfaces are left open. The trapezoidal block has a positioning groove 121, which the contour carrier plate 13 can be positioned within, and then locked in place by screws 122). This ensures that the inclined surface of the glass to be coated is parallel to the target surface. The glass product is positioned and placed, and the glass 4 is placed into the fixture from the back of the placement base. Spring force presses the glass flange flat surface onto the contour carrier plate 13 to form a seal, preventing the film from coating the convex surface of the glass. The non-coated area on the inner surface is pressed by the contour surface 5 of the contour carrier plate 13, exposing only the coating groove and the coating area 3, thus blocking the non-coated surface and preventing over-coating or wrap-around coating. This results in a stable and uniform film layer.

[0072] Base plate 14 — connects and installs various components.

[0073] The directional rotating shaft 15 positions the rotating pressure block 16 so that it can only be in the position of pressing the cover plate and the position of removing the cover plate 21.

[0074] Rotating pressure block 16 drives the ball head plunger to press the cover plate 21.

[0075] Ball head plunger - directional ball head plunger 17: The elastic ball head is pressed into the groove of the positioning shaft, which plays the role of directional rotation pressure block; pressing ball head plunger 17': The elastic ball head is pressed into the groove of the cover plate 21 to lock the cover plate 21.

[0076] like Figure 5 As shown, the elastic pressure block assembly 2 consists of a cover plate 21, inclined blocks (inclined blocks 22, inclined blocks 22', inclined blocks 22"), equal-height screws 23, springs 24, and round pressure blocks 25, which are fixed by threaded connection.

[0077] Cover plate 21 -- connects and installs various components.

[0078] The inclined block is used to position and install the pressure block so that the direction of the pressure block's elastic force is perpendicular to the glass plane.

[0079] Equal-height screws connect the round pressure block and the wedge block, defining a tiny distance for directional compression of the spring, giving the round pressure block elastic force to press the glass firmly.

[0080] Springs provide clamping force.

[0081] Round pressure block—presses the glass tightly.

[0082] The coating fixture rotates within the coating machine to apply the coating, and a correction plate adjusts the film thickness at each location. Glass only achieves specific optical effects when placed in a specific position; consistent placement of the same material ensures a uniform spectral curve. Therefore, the fixture must guarantee both processing and assembly precision, and precise positioning is required during component assembly.

[0083] like Figure 6 As shown, the glass placement base 1 is assembled and positioned as follows: the lugs 11, trapezoidal blocks (12, 12', 12"), and the contoured carrier plate 13 are positioned by transitional fit through the side grooves 111; the trapezoidal blocks (12, 12', 12") and the base plate 14 are positioned by pins 6. This ensures that the glass placement position is the same for each assembly fixture.

[0084] like Figure 7 As shown, the positioning assembly of the elastic pressure block assembly 2 is as follows: the inclined block 22” has an inclined block positioning square groove 221, the cover plate 21 has a positioning square step 211, and the cover plate and the inclined block are positioned by the square step 211; the round pressure block 25 and the equal height screw 23 are locked by threaded connection and guided and positioned by the inclined block positioning hole 222.

[0085] like Figure 8 As shown, the locking and positioning of the fixture is achieved by the square boss 212 on the cover plate and the groove 141 on the bottom plate transitionally fitting together for positioning.

[0086] Because both the fixture and the glass have processing errors, simply placing the glass through the conformal cavity can result in looseness or overpressure. Looseness will cause the glass to slide and collide within the fixture cavity during loading, unloading, and rotation on the machine, resulting in scratches; overpressure will cause the glass to be crushed.

[0087] like Figure 9 As shown, the glass fixing structure of this patented fixture is as follows: the glass is placed in the contour positioning groove for positioning and orientation; the guide shaft of the pressure block is perpendicular to the glass plane, and a rear spring provides clamping force, so that the pressure block presses the glass parallel to the surface. By adding a slight elastic force in the vertical direction, the glass is pressed firmly onto the fixture plane, and the glass cannot wobble during machine operation, thereby reducing defects such as scratches and dents.

[0088] like Figure 10 As shown, the directional rotating shaft is positioned with the base plate 14 through the directional rotating shaft positioning hole 151 and the flat position 152, and is fastened to the base plate by a snap ring;

[0089] The directional rotating shaft only has locking grooves in the X and Y directions. The ball head plunger (pressing the directional ball head plunger) in the horizontal direction of the rotating pressure block is pushed by the spring to press the ball head (directional ball head plunger) into the locking groove, so that the rotating pressure block can only be locked by spring force in the X and Y directions.

[0090] When the rotating pressure block moves to the Y direction, the pressure block matches the through groove of the cover plate, allowing the cover plate assembly to be placed or removed; when the rotating pressure block moves to the X direction, the ball-head plunger spring in the vertical direction of the pressure block pushes the ball head to press tightly into the cover plate slot, thus locking the cover plate and the base.

[0091] like Figure 12 As shown, the embodiments and operation steps of the fixture of the present invention are as follows.

[0092] Insert the pot:

[0093] 1. Remove the fixture, rotate the pressure block, and remove the cover plate;

[0094] 2. Use the suction pen to remove the glass and place it in the contour groove of the base;

[0095] 3. Cover the fixture with the cover plate and rotate the pressure block to lock the fixture;

[0096] 4. Place the jig in the turnover cart, take out the next jig and repeat the above operation.

[0097] Picking up the pot:

[0098] 1. Remove the fixture, rotate the pressure block, and remove the cover plate;

[0099] 2. Use a suction pen to remove the glass and place it in the material tray;

[0100] 3. Cover the fixture with the cover plate and rotate the pressure block to lock the fixture;

[0101] 4. Place the jig in the turnover cart, take out the next jig and repeat the above operation.

[0102] Example 2: The structure of this example is the same as that of Example 1 above, except that the base module is specifically a trapezoidal block base made of SUS304 stainless steel (dimensions 200×150×50mm, tolerance ±0.05mm). The cover module includes a 5mm thick hard anodized aluminum bearing frame with a functional hole diameter tolerance of H7 / g6. The elastic force source generating part is made of 60Si2MnA spring steel with a wire diameter of φ0.8±0.02mm (elastic modulus 206GPa). The spring assembly includes a pluggable stiffness adjusting sleeve with three selectable stiffness values: low (0.5-1N / mm), medium (1-2N / mm), and high (2-3N / mm). The threaded adjustable torque connector is equipped with an M3×0.35 miniature ball screw (reduction ratio 1:5) with a worm gear reduction mechanism, and the adjustable torque range is 0.1-0.5mm. Clamping steps:

[0103] Install the profile carrier plate onto the base plate (Steps and tools: 5 N·m torque wrench).

[0104] Rotate the directional pivot to the Y-axis unlock position (operating angle 30±2°).

[0105] Place the curved glass into the contour groove of the carrier plate (vacuum pen Z-axis positioning accuracy ±0.01mm).

[0106] Close the pressure cap assembly and rotate it to the X-axis locking position (the ball spring unit generates a clamping force of 1.5 ± 0.2 N).

[0107] Example 3: This example differs from the examples above in that the replaceable wedge block of the angle adjustment section adopts a serialized design:

[0108] angle Dimensions Application scenarios 5° Base length L = 80 mm, h = 7 mm Mobile phone flat glass 12° Base length L = 60 mm, h = 13 mm Automotive curved glass

[0109] The trapezoidal pivot joint of the compensation module is made of DC53 steel and vacuum heat treated (HRC58-60), and is equipped with φ3±0.01mm positioning pin holes.

[0110] Example 4: This example is the implementation method of the above example, wherein step S3 pre-tightening force loading curve: firstly, linear loading to 80% of the target pressure in 0-5s, then holding for 5-8s, and finally fine-tuning to 100% of the target value in 8-10s; the target material calibration adopts a laser positioning system (KEYENCE IL-300), and the angle deviation compensation algorithm is: Δθ=arctan(δ / 2L), based on the sinusoidal square law correction of the film thickness distribution, where δ is the offset and L=200mm is the calibration distance.

[0111] Compared with the prior art, the embodiments of the present invention also have the following advantages:

[0112] 1. A flexible constraint system is constructed through a modular split structure to achieve precise control of the three-dimensional stress distribution of curved surface components (measured pressure fluctuation ≤5%).

[0113] 2. The geometric positioning part eliminates cumulative assembly errors (fit tolerance improved from ±0.1mm to ±0.02mm);

[0114] The thread-spring composite adjustment mechanism enables preload gradient adjustment in the 0.01mm range;

[0115] Multi-directional positioning feedback of the ball head reduces the locking operation time to 1.5 seconds per process.

[0116] Compare with third-party verification data:

[0117] index Existing technology This invention Improvement rate Positioning accuracy ±0.08mm ±0.02mm 75％ Locking time 4.2s 1.5s 64％ Yield 92.5％ 98.7％ 6.2％

[0118] The implementation of this technical solution can achieve triple synergistic effects:

[0119] While improving the positioning accuracy of curved glass coating to IT5 level (positioning error ≤3μm), the time for a single operation is reduced to less than 45s.

[0120] This effect stems from the synergistic effect of the following technical features:

[0121] 1. The constraint field formed by the geometric positioning unit and the multi-degree-of-freedom locking mechanism eliminates 6 spatial degrees of freedom;

[0122] 2. The compression spring assembly and the threaded adjustable connector constitute a nonlinear stiffness system, which can accommodate workpiece thickness tolerances of ±0.15mm;

[0123] 3. The replaceable wedge block array of the angle adjustment section enables continuous compensation of the incident angle from 0 to 30°;

[0124] 4. The coefficient of friction of spherical contact pairs is reduced to 0.08-0.12 (60% lower than that of ordinary planar contact);

[0125] 5. The thickness non-uniformity (CV value) of the sputtered film was improved from >15% to ≤5%.

[0126] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A coating positioning device for curved optical elements, characterized in that Comprise: Base module, including support base and angle adjustment part connected by geometric positioning part; Cover module, including bearing frame with functional hole area and at least two assembled elastic compression components; the elastic compression component includes threaded distance adjusting connector and elastic force source generating part; Wherein, the base module and the cover module are precisely positioned and assembled through the transition fitting part, and the pre-tightening force generated by the elastic force source generating part can be adjusted by a small amount through the threaded distance adjusting connector.

2. The apparatus of claim 1 wherein The geometric positioning part contains at least one combination of stepped transition fitting boss part and edge groove part; Pin shaft plug-in positioning part; Wedge-shaped guide correction part.

3. The apparatus of claim 1 wherein The elastic force source generating part includes: Compression spring assembly; Cylindrical elastic body with anti-deflection guide sleeve; Spring-screw composite structure limiting compression stroke through threaded distance adjusting connector.

4. The apparatus of claim 1 wherein Also includes a multi-degree-of-freedom locking mechanism, which contains: Directional rotating shaft part provided with XY bidirectional locking groove; Rotary execution part equipped with double-acting ball head plunger; Combined elastic locking system, containing not less than two ball head spring constraint units.

5. The apparatus of claim 3 wherein The adjustment micro-distance range of the threaded distance adjusting connector is designed to be 0.1-0.5mm, and the compression spring adopts constant wire diameter spring.

6. The apparatus of claim 1 wherein Also includes angle adjustment part, which contains: Replaceable wedge-shaped angle correction block; Trapezoidal compensation module connected by multi-directional rotating shaft; Adjustable inclined base plate provided with screw hole array.

7. The apparatus of claim 1 wherein Also includes assembled elastic compression component of bearing frame, which contains: Inclined surface guide mounting seat; Movable pair assembly provided with friction-reducing coating, which includes inclined block and round block; Pressure applying head with spherical contact surface.

8. A curved optical element coating positioning method, characterized by comprising: Step S1: constructing a base-cover assembly system through a split pre-assembled component; Step S2: completing initial positioning of the workpiece using geometric positioning relationship; Step S3: starting the elastic compression component to apply multi-dimensional constraint force; Step S4: operating the locking mechanism to form a composite fixing system; Step S5: completing sputtering angle adjustment through a target parallel calibration system.

9. The method of claim 8, wherein The split pre-assembled component includes a glass sheet placing base and an elastic compression block assembly; Wherein, the glass sheet placing base contains a trapezoidal block for rotating the glass to a specific angle parallel to the target plane, and a profiled carrier plate provided with a positioning groove to match the glass curved surface profile; the elastic compression block assembly contains a cover plate, an inclined block and a round block, the inclined block is driven by a spring to the round block through an equal-height screw, so that the elastic force direction is perpendicular to the glass plane.

10. The method of claim 8 or 9, wherein Also includes that the elastic compression component realizes multi-dimensional constraint force through the following structure: The round block applies vertical pressure to the glass under the action of the spring, so that the glass is tightly attached to the profiled carrier plate plane; The rotating block is engaged with the clamping groove of the cover plate through the ball head plunger, forming horizontal locking in X / Y direction; The directional rotating shaft limits the movement trajectory of the rotating block, allowing switching only between the unlocked position (Y direction) and the locked position (X direction).

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