Easily-deformed optical part machining tool and method

Abstract

The invention provides an easy-to-deform optical part machining tool and method.The optical part machining tool comprises a tool body, the tool body is used for fixing an optical part to machining equipment, a light path channel is formed in the tool body, and the light path channel is used for conducting surface shape detection on the to-be-machined surface of the optical part installed on the tool body; an adjusting assembly is arranged on the tool body and used for adjusting stress borne by the optical part after the optical part is installed on the tool body so that the to-be-machined face can restore the initial face shape. The tool body is provided with the light path channel, the surface shape change generated after the optical part is installed on the tool body can be detected, meanwhile, the stress borne by the optical part on the tool body is changed through the adjusting assembly, and the problem that the stress borne by the optical part on the tool body is uneven can be effectively solved; and the surface shape change caused by stress on the optical part is reduced, so that high-precision surface shape processing is realized.

Description

Technical Field

[0001] The present application relates to the technical field of micro-nano processing and ultra-precision processing, and in particular to a processing tool and method for easily deformable optical parts. Background Art

[0002] Normally, optical parts can be directly processed using classical, precision or ultra-precision processing techniques. However, for metal materials or ultra-thin parts, their own material properties or shape characteristics determine that they are very easy to introduce deformation after being clamped to the tooling during the processing. In order to ensure the accuracy of the processed surface shape, ultra-precision processing can introduce an online monitoring system to compensate the processed surface shape in real time. However, the above system can only guarantee the surface shape accuracy of online processing. The clamping introduces an irregular surface shape change, which cannot be compensated by the online monitoring system, and the online real-time compensation processing technology cannot guarantee the surface shape of the part after it is unloaded from the tooling. Therefore, for high-precision surface shape processing of metal optical components and ultra-thin optical components that are easy to deform, it is necessary to reduce the stress deformation introduced by the clamping, so as to achieve the purpose of high-precision optical processing. Summary of the invention

[0003] In a first aspect, the present application provides a tooling for processing easily deformable optical parts, comprising:

[0004] A tool body, the tool body is used to fix the optical part to the processing equipment, the tool body has an optical path channel, and the optical path channel is used to perform surface shape detection on the to-be-processed surface of the optical part on the tool body;

[0005] An adjustment component is arranged on the tooling body and is used to adjust the stress to which the optical component is subjected after being installed on the tooling body, so as to restore the surface to be processed to its original shape.

[0006] According to the technical solution provided in certain embodiments of the present application, the tooling body has a first opening end, and a first space is formed inside the tooling body. The first space is used to install the optical parts. A through hole is opened on the side of the tooling body away from the first opening end. The through hole, the first space and the first opening end together form the optical path channel.

[0007] According to the technical solution provided in certain embodiments of the present application, the tooling body is provided with a plurality of threaded holes in the circumferential direction, and the threaded holes penetrate the tooling body in the radial direction of the tooling body; the adjustment assembly includes a plurality of top screws, and the plurality of top screws are respectively passed through the corresponding threaded holes and threadably matched with the threaded holes.

[0008] According to the technical solution provided in certain embodiments of the present application, the top screw has a first working position and a second working position. When in the first working position, one end of the top screw extends into the first space and rests on the optical part; when in the second working position, one end of the top screw is located in the threaded hole.

[0009] In a second aspect, the present application provides a method for processing a deformable optical part, using a deformable optical part processing tool as described above, comprising:

[0010] Collecting a first surface shape of the surface to be processed of the optical component, where the first surface shape is an initial surface shape of the surface to be processed;

[0011] Install the optical component on the processing tool and adjust the surface to be processed to restore it to the first surface shape;

[0012] The surface to be processed is turned to obtain the optical component after processing.

[0013] According to the technical solutions provided in some embodiments of the present application, the step of installing the optical component on the processing tool and adjusting the surface to be processed to restore it to the first surface shape includes:

[0014] The optical component and the processing tool are mounted on a detector to collect a second surface shape of the surface to be processed, where the second surface shape is the surface shape of the surface to be processed after the optical component is mounted on the processing tool;

[0015] The top screw is adjusted according to the second surface shape to change the stress on the optical component until the surface to be processed is restored to the first surface shape.

[0016] According to the technical solutions provided by some embodiments of the present application, before collecting the first surface shape of the surface to be processed of the optical component, the method further includes:

[0017] Turning the machining tool.

[0018] Compared with the prior art, the beneficial effects of the present application are as follows: the present application provides a tooling for processing easily deformable optical parts, comprising a tooling body, the tooling body being used to install optical parts, the tooling body having an optical path channel thereon, the optical path channel being used to perform surface shape detection on the surface to be processed of the optical part installed on the tooling body; an adjustment component is provided on the tooling body, for adjusting the stress to which the optical part is subjected after being installed on the tooling body, so as to restore the initial surface shape of the surface to be processed; by opening an optical path channel on the tooling body, the surface shape changes caused by the installation of the optical part on the tooling body can be detected, and at the same time, by changing the stress to which the optical part is subjected on the tooling body through the adjustment component, the problem of uneven force on the optical part on the tooling body can be effectively solved, the surface shape changes caused by the stress on the optical part can be reduced, and high-precision surface shape processing can be achieved.

[0019] It should be understood that the description of technical features, technical solutions, beneficial effects or similar language in this application does not imply that all features and advantages can be realized in any single embodiment. On the contrary, it is understood that the description of features or beneficial effects means that specific technical features, technical solutions or beneficial effects are included in at least one embodiment. Therefore, the description of technical features, technical solutions or beneficial effects in this specification does not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions and beneficial effects described in the present embodiment can also be combined in any appropriate manner. Those skilled in the art will understand that the embodiment can be realized without one or more specific technical features, technical solutions or beneficial effects of a specific embodiment. In other embodiments, additional technical features and beneficial effects can also be identified in a specific embodiment that does not embody all embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A schematic diagram of the structure of a deformable optical part processing tool provided in Example 1 of the present application;

[0022] Figure 2 A schematic flow chart of a method for processing easily deformable optical parts provided in Example 2 of the present application.

[0023] The text annotations in the figure represent:

[0024] 1. Tool body; 2. Through hole; 3. Threaded hole; 4. Top screw. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. The description in this section is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present application. Specifically, the described embodiments are only embodiments of a part of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present invention.

[0026] It should be noted that similar reference numerals and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0027] Example 1

[0028] As mentioned in the background technology, in view of the problems in the prior art, this embodiment provides a tooling for processing easily deformable optical parts, including:

[0029] A tool body 1, which is used to fix the optical part to the processing equipment. The tool body 1 has an optical path channel, which is used to perform surface shape detection on the to-be-processed surface of the optical part on the tool body 1;

[0030] The adjustment component is arranged on the tool body 1 and is used to adjust the stress to which the optical component is subjected after being installed on the tool body 1 so as to restore the original surface shape of the surface to be processed.

[0031] like Figure 1 As shown, after the optical part is installed on the tooling body 1, it is located on the optical path channel. The optical part and the tooling body 1 can be placed together on the laser interferometer, and the three-dimensional morphology of the surface to be processed of the optical part can be detected through the optical path channel to determine the surface shape changes before and after the optical part is clamped; the adjustment component is arranged on the tooling body 1, which can make the optical part evenly stressed on the tooling body 1, so as to restore the initial surface shape of the surface to be processed.

[0032] By opening an optical path channel on the tooling body 1, the surface shape changes caused by the optical parts being installed on the tooling body 1 can be detected. At the same time, by adjusting the components to change the stress on the optical parts on the tooling body 1, the problem of uneven force on the optical parts on the tooling body 1 can be effectively solved, and the surface shape changes caused by the stress on the optical parts can be reduced, thereby achieving high-precision surface shape processing.

[0033] In a preferred embodiment, the tooling body 1 has a first opening end, forming a first space inside the tooling body 1, and the first space is used to install optical parts. A through hole 2 is opened on the side of the tooling body 1 away from the first opening end, and the through hole 2, the first space and the first opening end together form an optical path channel.

[0034] like Figure 1 As shown, the tool body 1 is approximately a cylindrical structure, and the first space inside it can be used to install optical parts. The optical parts are clamped on the tool body 1, and the surface to be processed can extend out of the first opening end, which is convenient for turning the surface to be processed of the optical parts; a through hole 2 is opened at the bottom of the tool body 1, and the through hole 2, the first space and the first opening end form an optical path channel, through which the optical parts can be tested for surface shape.

[0035] In a preferred embodiment, a plurality of threaded holes 3 are circumferentially provided on the tool body 1 , and the threaded holes 3 penetrate the tool body 1 radially along the tool body 1 ; the adjustment assembly includes a plurality of top screws 4 , and the plurality of top screws 4 are respectively passed through the corresponding threaded holes 3 and threadably matched with the threaded holes 3 .

[0036] In a preferred embodiment, the top screw 4 has a first working position and a second working position. When in the first working position, one end of the top screw 4 extends into the first space and rests on the optical part; when in the second working position, one end of the top screw 4 is located in the threaded hole 3.

[0037] like Figure 1 As shown, a plurality of threaded holes 3 are provided on the side wall of the tool body 1, and the plurality of threaded holes 3 are evenly distributed and penetrate the side wall of the tool body 1 in the radial direction. The inner threads of the threaded holes 3 are matched with top screws 4, and by screwing the top screw 4, one end of the top screw 4 can be extended out of the threaded hole 3 and abut against the optical component, that is, the above-mentioned first working position, so as to apply a force to the optical component to offset the stress of the optical component clamping and make the optical component evenly stressed; by screwing the top screw 4 back into the threaded hole 3, that is, the above-mentioned second working position, the top screw 4 can release the force applied to the optical component.

[0038] Example 2

[0039] like Figure 2As shown in FIG. 1 , the figure is a schematic flow chart of a method for processing a deformable optical component provided by this embodiment, using a deformable optical component processing tool as described in Example 1, and the method includes the following steps:

[0040] S1, turning tooling;

[0041] The part positioning surface of the machining tooling, i.e., the surface of the inner side wall and the inner bottom wall of the machining tooling, is turned by a diamond lathe, so that the optical part can be evenly contacted with the part positioning surface when mounted on the machining tooling, thereby reducing the surface shape change of the optical part to be processed during the clamping process.

[0042] S2, collecting a first surface shape of the surface to be processed of the optical component, where the first surface shape is an initial surface shape of the surface to be processed;

[0043] The optical component is placed on a laser interferometer, and the three-dimensional shape of the surface to be processed of the optical component is detected to obtain the first surface shape.

[0044] S3, installing the optical component on the processing tooling and adjusting the surface to be processed to restore it to the first surface shape;

[0045] The optical component is mounted on a processing tool, and the three-dimensional shape of the surface to be processed of the optical component is detected at this time. By adjusting the surface shape after clamping to the first surface shape, the surface shape change caused by mounting the optical component on the processing tool can be offset.

[0046] The step of installing the optical component on the processing tool and adjusting the surface to be processed to restore it to the first surface shape comprises:

[0047] S31, placing the optical component and the processing tool on the detector, collecting the second surface shape of the surface to be processed, the second surface shape being the surface shape of the surface to be processed after the optical component is installed on the processing tool;

[0048] The optical part and the processing tool are placed on the detector, and the three-dimensional morphology of the surface to be processed of the optical part is detected to obtain a second surface shape. By comparing the second surface shape with the first surface shape, it can be determined that the surface shape of the surface to be processed has changed due to the influence of stress. By unloading the optical part from the processing tool and then detecting the three-dimensional morphology of the surface to be processed again, it can be determined that the difference in surface shape between the second surface shape and the first surface shape is caused by uneven force on the optical part during clamping.

[0049] S32, adjusting the top screw according to the second surface shape to change the stress on the optical component until the surface to be processed is restored to the first surface shape;

[0050] By screwing the top screw, one end of the top screw is extended out of the threaded hole and pressed against the optical part to apply force to the optical part to offset the stress applied to the optical part when it is clamped, until the three-dimensional morphology of the surface to be processed is restored from the second surface shape to the first surface shape. At this time, the optical part is evenly stressed on the processing tooling.

[0051] S4, turning the surface to be processed to obtain the optical part after processing;

[0052] A lathe is used to turn the surface to be processed of the optical part. After the processing is completed, the optical part is unloaded from the processing tooling. The surface shape of the surface to be processed of the optical part no longer changes, thereby obtaining the completed optical part.

[0053] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A tooling for processing easily deformable optical parts, characterized in that: include: A tool body (1), the tool body (1) being used to fix an optical part to a processing device, the tool body (1) being provided with an optical path channel, the optical path channel being used to perform surface shape detection on a surface to be processed of the optical part on the tool body (1); An adjustment component is arranged on the tool body (1) and is used to adjust the stress to which the optical component is subjected after being mounted on the tool body (1), so as to restore the surface to be processed to its original shape.

2. The deformable optical parts processing tool according to claim 1, characterized in that: The tooling body (1) has a first opening end, and a first space is formed inside the first opening end. The first space is used to install the optical component. A through hole (2) is provided on a side of the tooling body (1) away from the first opening end. The through hole (2), the first space and the first opening end together form the optical path channel.

3. The deformable optical parts processing tool according to claim 2, characterized in that: The tool body (1) is provided with a plurality of threaded holes (3) in the circumferential direction, and the threaded holes (3) penetrate the tool body (1) in the radial direction of the tool body (1); the adjustment component comprises a plurality of top screws (4), and the plurality of top screws (4) are respectively inserted into corresponding threaded holes (3) and threadably matched with the threaded holes (3).

4. The deformable optical parts processing tool according to claim 3, characterized in that: The top screw (4) has a first working position and a second working position. When in the first working position, one end of the top screw (4) extends into the first space and abuts against the optical component; when in the second working position, one end of the top screw (4) is located in the threaded hole (3).

5. A method for processing easily deformable optical parts, using an optical parts processing tool as described in any one of claims 1 to 4, characterized in that: include: Collecting a first surface shape of the surface to be processed of the optical component, where the first surface shape is an initial surface shape of the surface to be processed; Install the optical component on the processing tool and adjust the surface to be processed to restore it to the first surface shape; The surface to be processed is turned to obtain the optical component after processing.

6. A method for processing a deformable optical component according to claim 5, characterized in that: The step of installing the optical component on the processing tool and adjusting the surface to be processed to restore it to the first surface shape comprises: The optical component and the processing tool are mounted on a detector to collect a second surface shape of the surface to be processed, where the second surface shape is the surface shape of the surface to be processed after the optical component is mounted on the processing tool; The top screw is adjusted according to the second surface shape to change the stress on the optical component until the surface to be processed is restored to the first surface shape.

7. The method for processing a deformable optical component according to claim 5, characterized in that: Before collecting the first surface shape of the surface to be processed of the optical component, the method further includes: Turning the machining tool.

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