A clamping tool for testing the surface shape of a cylindrical mirror

Abstract

A kind of clamping tool of cylindrical mirror surface test, including cylindrical mirror clamping module, cylindrical mirror self-rotation adjusting module, five-dimensional adjusting frame adapter module;Cylindrical mirror clamping module includes oppositely arranged first clamping plate and second clamping plate, the spacing between first clamping plate and second clamping plate is adjusted by screw thread stroke adjusting mechanism, first clamping plate and second clamping plate can be fixed on clamping plate fixed frame;Cylindrical mirror self-rotation adjusting module includes center round plate and outer body, center round plate is rotatably placed in the outer body, and the side of the outer body is equipped with screw thread fine adjustment mechanism;Clamping plate fixed frame is installed on center round plate;Five-dimensional adjusting frame adapter module includes annular structure for assembly connection arranged on the back side of outer body.The clamping tool in the present application, using one cylindrical mirror clamping tool can carry out the replacement clamping of multiple cylindrical mirrors;Meanwhile, without disassembling tool, the quick replacement of cylindrical mirror can be realized, and coarse adjustment and fine adjustment of attitude can be carried out.

Description

Technical Field

[0001] This utility model belongs to the field of cylindrical mirror surface morphology testing technology, specifically relating to a clamping fixture for cylindrical mirror surface morphology testing. Background Technology

[0002] Cylindrical lenses, also known as aspherical lenses, are a widely used optical component.

[0003] In the process of using CGH to test the surface morphology of cylindrical lenses, cylindrical lens clamping fixtures are essential fixtures for optical path construction. Existing clamping fixtures use plastic slots to clamp cylindrical lenses. Cylindrical lens processing usually requires the production of cylindrical lenses of different sizes and F-numbers. When testing the surface morphology, different sized plastic slots are required for clamping. Placing batches of test fixtures at the test site is not conducive to on-site 6S organization and cost control.

[0004] Furthermore, the existing cylindrical mirror clamping fixture adopts a clamping method that places the cylindrical mirror directly into the slot of the plastic fixture. This method has three disadvantages: (1) It is not compatible, and cylindrical mirrors of different sizes need to use slots of different sizes; (2) It is inconvenient to replace and put away the cylindrical mirror, and the fixture needs to be removed before the cylindrical mirror can be replaced; (3) The cylindrical mirror needs to be adjusted in the direction of rotation during the surface shape test. The existing fixture itself cannot be adjusted in the direction of rotation, and a six-dimensional adjustment frame needs to be configured.

[0005] Therefore, it can be seen that, from the perspective of testing efficiency, the existing plastic slot replacement process is rather cumbersome. First, the plastic slot needs to be removed from the six-dimensional adjustment frame before the cylindrical mirror can be clamped, and then it needs to be reinstalled on the six-dimensional adjustment frame after clamping.

[0006] Based on the above problems, this application proposes a cylindrical mirror shape testing fixture. Utility Model Content

[0007] To address the shortcomings of the existing technology, this utility model provides a cylindrical mirror surface shape testing clamping fixture, which changes the assembly method of the cylindrical mirror and the clamping fixture. Multiple cylindrical mirrors can be replaced and clamped using one cylindrical mirror clamping fixture; at the same time, the cylindrical mirror can be quickly replaced without disassembling the fixture, and the attitude can be coarsely and finely adjusted.

[0008] The present invention is solved by the following technical solution.

[0009] A clamping fixture for testing the surface shape of a cylindrical mirror includes a cylindrical mirror clamping module, a cylindrical mirror spin adjustment module, and a five-dimensional adjustment frame adapter module. The cylindrical mirror clamping module includes a first clamping plate and a second clamping plate arranged opposite each other. The distance between the first clamping plate and the second clamping plate is adjusted by a threaded stroke adjustment mechanism. The first clamping plate and the second clamping plate can be fixed on a clamping plate fixing frame. The cylindrical mirror spin adjustment module includes a central circular plate and an outer body. The central circular plate is rotatably placed in the outer body, and a threaded fine adjustment mechanism is provided on one side of the outer body. The clamping plate fixing frame is mounted on the central circular plate. The five-dimensional adjustment frame adapter module includes an annular structure for assembly connection located on the back side of the outer body.

[0010] When using the clamping fixture in this application, the cylindrical mirror is clamped between the first clamping plate and the second clamping plate. Because the distance between the first clamping plate and the second clamping plate is adjustable, it can accommodate the clamping of cylindrical mirrors of different sizes, and has strong compatibility. After clamping, the rotation of the central circular plate can drive the rotation of the cylindrical mirror, and at the same time, threaded fine adjustment can be performed. The self-rotation adjustment is convenient, and the entire clamping fixture can be easily assembled on the five-dimensional adjustment frame through the ring structure, making disassembly and assembly convenient.

[0011] In a preferred embodiment, a pad is provided on the clamping surface of both the first and second clamping plates. The pad can be a flexible pad or an elastic material to reduce the clamping stress of the clamping plates on the cylindrical mirror and avoid lens deformation.

[0012] In a preferred embodiment, the clamping bracket is provided with a position-adjustable clamping block for fixing the first clamping plate and the second clamping plate, which is used for positioning after clamping.

[0013] In a preferred embodiment, a pre-tensioning spring is provided between the clamp fixing block and the frame of the clamp fixing bracket to provide a pre-tensioning effect and eliminate thread clearance.

[0014] In a preferred embodiment, the threaded stroke adjustment mechanism includes: a first threaded guide post that is threadedly engaged with the clamping plate fixing block under the first clamping plate, and a second threaded guide post that is threadedly engaged with the clamping plate fixing block under the second clamping plate. The first threaded guide post and the second threaded guide post are coaxially disposed on the rod body, and the threads are arranged in opposite directions so that the first clamping plate and the second clamping plate can move closer or further apart synchronously when the rod body rotates, thereby achieving clamping and loosening effects, ensuring the uniformity of clamping force, and realizing the compatibility and quick replacement of cylindrical mirror clamping.

[0015] In a preferred embodiment, the outer end of the rod is provided with an operating part for easy hand gripping and operation.

[0016] In a preferred embodiment, a limiting hole is provided on the outer periphery of the central circular plate, and a corresponding limiting groove is provided on the outer body. A limiting pin is also provided, which is placed in the limiting groove and inserted into the limiting hole. The limiting pin and the limiting groove can limit the pitch and yaw angles of the central circular plate during rotation, and prevent the rotation angle from being too large.

[0017] In a preferred embodiment, the thread fine-tuning mechanism includes a precision thread push rod, which is threadedly mounted on the thread fine-tuning mechanism; it also includes a structural component fixed to a central circular plate, which can move when the precision thread push rod rotates, thereby achieving fine-tuning of the central circular plate.

[0018] In a preferred embodiment, the annular structure is provided with screw holes for assembly and corresponding assembly screws, making installation and disassembly convenient.

[0019] Compared with existing technologies, this utility model has the following advantages: It provides a cylindrical mirror surface shape testing clamping fixture, which is composed of three modules, changing the assembly method of the cylindrical mirror and the clamping fixture. Multiple cylindrical mirrors can be replaced and clamped using a single cylindrical mirror clamping fixture; at the same time, the cylindrical mirror can be quickly replaced without disassembling the fixture, and coarse and fine adjustments to the attitude can be made. The overall fixture integrates clamping, spin adjustment, and transfer functions, greatly improving testing efficiency and reducing testing costs. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the cylindrical mirror clamping module in this utility model.

[0021] Figure 2 This is an exploded view of the cylindrical mirror spin adjustment module in this utility model.

[0022] Figure 3 This is a schematic diagram of the overall clamping fixture in this utility model.

[0023] Figure 4 This is a perspective view of the overall structure of the clamping fixture in this utility model.

[0024] Figure 5 The three-dimensional fixture in this utility model omits the outer body and cover plate. Figure 1 .

[0025] Figure 6 The three-dimensional fixture in this utility model omits the outer body and cover plate. Figure 2 . Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0027] In the following embodiments, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] In the description of this utility model, it should be understood that the terms such as center, longitudinal, transverse, length, width, thickness, upper, lower, front, back, left, right, vertical, horizontal, top, bottom, inner, outer, clockwise, and counterclockwise, indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., 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 shown. In the description of this utility model, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0029] See Figures 1 to 6 The present invention relates to a clamping fixture for testing the surface shape of a cylindrical mirror, comprising a cylindrical mirror clamping module, a cylindrical mirror spin adjustment module, and a five-dimensional adjustment frame adapter module; the cylindrical mirror clamping module includes a first clamping plate 21 and a second clamping plate 22 arranged opposite to each other, the distance between the first clamping plate 21 and the second clamping plate 22 is adjusted by a threaded stroke adjustment mechanism, and the first clamping plate 21 and the second clamping plate 22 can be fixed on the clamping plate fixing frame 3.

[0030] Cylindrical mirror spin adjustment is an essential degree of freedom for cylindrical mirror surface shape testing. Existing tooling requires assembling a plastic slot into a six-dimensional adjustment frame for spin adjustment, which is costly and difficult to meet on-site. In this application, the cylindrical mirror spin adjustment module includes a central circular plate 4 and an outer body 5. The central circular plate 4 is rotatably placed within the outer body 5, and a threaded fine-tuning mechanism is provided on one side of the outer body 5; the clamping bracket 3 is mounted on the central circular plate 4.

[0031] The five-dimensional adjustment frame adapter module includes an annular structure 52 for assembly connection located on the back side of the outer body 5. Specifically, the annular structure 52 is provided with screw holes and corresponding assembly screws for easy installation and disassembly. This module enables rapid conversion with existing five-dimensional adjustment frames, improving compatibility and testing efficiency, and lowering the testing threshold. Since the number of five-dimensional adjustment frames in a testing environment typically far exceeds the number of six-dimensional adjustment frames, the built-in self-adjustable clamping fixture is more user-friendly for field use when used with the five-dimensional adjustment frame.

[0032] In this application, a pad 23 is provided on the clamping surface of the first clamping plate 21 and the second clamping plate 22. The pad can be a flexible pad or an elastic material to reduce the clamping stress of the clamping plate on the cylindrical mirror and avoid lens clamping deformation.

[0033] In addition, from the appendix Figure 1 As can be seen from the above, the threaded stroke adjustment mechanism in this application includes: a first threaded guide post 12 that is threadedly engaged with the clamping plate fixing block 31 under the first clamping plate 21, and a second threaded guide post 13 that is threadedly engaged with the clamping plate fixing block 31 under the second clamping plate 22. The first threaded guide post 12 and the second threaded guide post 13 are coaxially arranged on the rod body 1, and the threads are arranged in opposite directions so that when the rod body 1 rotates, the first clamping plate 21 and the second clamping plate 22 can move closer or further apart synchronously, achieving a clamping and loosening effect, ensuring the uniformity of clamping force, and realizing the compatibility and quick replacement of cylindrical mirror clamping. Furthermore, the outer end of the rod body 1 is provided with an operating part 11 for convenient hand gripping and operation.

[0034] From the appendix Figure 1 It can also be seen that the clamping plate fixing frame 3 is provided with a position-adjustable clamping plate fixing block 31 for fixing the first clamping plate 21 and the second clamping plate 22. Furthermore, a pre-tensioning spring (not shown in the figure) is provided between the clamping plate fixing block 31 and the frame of the clamping plate fixing frame 3 to provide pre-tensioning and eliminate thread clearance; specifically, in conjunction with... Figure 5 ,from Figure 5 As can be seen, the clamping plate fixing frame 3 is provided with clamping plate fixing blocks 31 at its upper and lower positions for assembling the first clamping plate 21 and the second clamping plate 22, respectively. These blocks can move synchronously. The first threaded guide post 12 and the second threaded guide post 13 are threadedly connected and pass through the two clamping plate fixing blocks 31. A pre-tensioning spring is provided between the upper clamping plate fixing block 31 and the upper frame of the clamping plate fixing frame 3, and a pre-tensioning spring is provided between the lower clamping plate fixing block 31 and the lower frame of the clamping plate fixing frame 3. The pre-tensioning springs can be fitted onto the corresponding threaded guide posts. The clamping plate fixing frame 3 is also provided with a cover plate 38 to cover the internal structure. The cover plate 38 is provided with a sliding groove so as not to affect the approach and distance of the two clamping plate fixing frames 3.

[0035] Furthermore, from the appendix Figure 2 As can be seen from the above, in this application, the outer periphery of the central circular plate 4 is provided with a limiting hole 41, the outer body 5 is provided with a corresponding limiting groove 51, and a limiting pin 42 is provided, which is placed in the limiting groove 51 and inserted into the limiting hole 41. The limiting pin 42 and the limiting groove 51 can limit the pitch and yaw angle of the central circular plate 4 during the rotation process, and avoid excessive rotation angle.

[0036] In this application, the thread fine-tuning mechanism includes a precision thread push rod 61, which is threadedly assembled on the thread fine-tuning mechanism (adjustment box 62); it also includes a structural component 63 fixed on the central circular plate 4. When the precision thread push rod 61 rotates, the structural component 63 can be moved through the push rod part 613 to realize the fine adjustment of the central circular plate 4.

[0037] As can be seen from the above description, the clamping fixture in this application changes the clamping method of the existing fixture, changing the existing plastic slot clamping to upper and lower clamping, with the clamping direction parallel to the generatrix direction of the cylindrical mirror, which can realize the compatibility and rapid replacement testing of the cylindrical mirror clamping.

[0038] In this application, the tooling is used to clamp the cylindrical mirror between the first clamping plate 21 and the second clamping plate 22. Because the distance between the first clamping plate 21 and the second clamping plate 22 is adjustable, it can accommodate cylindrical mirrors of different sizes, exhibiting strong compatibility. After assembling the cylindrical mirror clamping module onto the central circular plate 4 of the cylindrical mirror spin adjustment module, coarse adjustment of the cylindrical mirror spin can be achieved by manually rotating the cylindrical mirror clamping module. The precision threaded push rod 61 is connected to the central circular plate 4 through the structural component 63, and fine adjustment of the cylindrical mirror spin can be achieved by rotating the precision threaded push rod 61. The spring ensures the uniformity of the rotation stroke. Furthermore, the entire clamping tooling can be easily assembled onto the five-dimensional adjustment frame through the ring structure 52, making assembly and disassembly convenient.

[0039] As described above, this utility model provides a cylindrical mirror surface shape testing clamping fixture, which is composed of three modules. It changes the assembly method of the cylindrical mirror and the clamping fixture, allowing for the replacement and clamping of multiple cylindrical mirrors using a single fixture. Furthermore, it enables rapid replacement of cylindrical mirrors without disassembling the fixture, and allows for coarse and fine adjustments to the orientation. The overall fixture integrates clamping, spin adjustment, and transfer functions, significantly improving testing efficiency and reducing testing costs.

[0040] The scope of protection of this utility model includes, but is not limited to, the above embodiments. The scope of protection of this utility model is defined by the claims. Any substitutions, modifications, or improvements to this technology that are easily conceived by those skilled in the art shall fall within the scope of protection of this utility model.

Claims

1. A clamping fixture for testing the shape of a cylindrical mirror, characterized in that, Includes a cylindrical mirror clamping module, a cylindrical mirror spin adjustment module, and a five-dimensional adjustment frame adapter module; The cylindrical mirror clamping module includes a first clamping plate (21) and a second clamping plate (22) arranged opposite to each other. The distance between the first clamping plate (21) and the second clamping plate (22) is adjusted by a threaded stroke adjustment mechanism. The first clamping plate (21) and the second clamping plate (22) can be fixed on the clamping plate fixing frame (3). The cylindrical mirror spin adjustment module includes a central circular plate (4) and an outer body (5). The central circular plate (4) is rotatably placed in the outer body (5), and a threaded fine adjustment mechanism is provided on one side of the outer body (5). The clamp fixing bracket (3) is installed on the central circular plate (4); The five-dimensional adjustment frame adapter module includes an annular structure (52) for assembly connection located on the back side of the outer body (5).

2. The clamping fixture for testing the cylindrical mirror shape according to claim 1, characterized in that, Both the first clamping plate (21) and the second clamping plate (22) are provided with pads (23).

3. The clamping fixture for testing the cylindrical mirror shape according to claim 1, characterized in that, The clamp fixing frame (3) is provided with a clamp fixing block (31) that is adjustable in position for fixing the first clamp (21) and the second clamp (22).

4. The clamping fixture for testing the cylindrical mirror shape according to claim 3, characterized in that, A pre-tensioning spring is provided between the clamp fixing block (31) and the frame of the clamp fixing bracket (3).

5. The clamping fixture for testing the cylindrical mirror shape according to claim 3, characterized in that, The threaded stroke adjustment mechanism includes: a first threaded guide post (12) that is threadedly engaged with the clamping block (31) under the first clamping plate (21), and a second threaded guide post (13) that is threadedly engaged with the clamping block (31) under the second clamping plate (22). The first threaded guide post (12) and the second threaded guide post (13) are coaxially mounted on the rod body (1), and the screws are arranged in opposite directions so that the first clamping plate (21) and the second clamping plate (22) can move closer or further apart synchronously when the rod body (1) rotates.

6. The clamping fixture for testing the cylindrical mirror shape according to claim 5, characterized in that, The outer end of the rod (1) is provided with an operating part (11).

7. The clamping fixture for testing the cylindrical mirror shape according to claim 1, characterized in that, The outer periphery of the central circular plate (4) is provided with a limiting hole (41), and the outer body (5) is provided with a corresponding limiting groove (51). A limiting pin (42) is placed in the limiting groove (51) and inserted into the limiting hole (41).

8. The clamping fixture for testing the cylindrical mirror shape according to claim 1, characterized in that, The thread fine-tuning mechanism includes a precision thread push rod (61), which is threadedly mounted on the thread fine-tuning mechanism; it also includes a structural component (63) fixed on the central circular plate (4). When the precision thread push rod (61) rotates, it can drive the structural component (63) to move, thereby realizing the fine-tuning of the central circular plate (4).

9. The clamping fixture for testing the cylindrical mirror shape according to claim 1, characterized in that, The annular structure (52) is provided with screw holes for assembly and corresponding assembly screws.

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