A chamfering tool and chamfering apparatus for spherical optics

Abstract

The application provides a chamfering tool and chamfering device for a spherical optical element, comprising: a grinding element, the grinding element having a grinding surface, the grinding element surrounding a clearance cavity, and the edge of the grinding surface surrounding an opening of the clearance cavity; a limiting element, the limiting element being arranged on the grinding element, a side surface of the limiting element and the grinding surface surrounding a limiting cavity, the limiting cavity being used for accommodating the spherical optical element, and the lower arc surface of the spherical optical element abutting against the grinding surface. The problem that the spherical optical element with a large concave radius is prone to scratching the polishing surface during the chamfering process on the plane grinding tool is solved.

Description

Technical Field

[0001] This application relates to the field of optical component processing technology, and more specifically, to a chamfering tool and chamfering equipment for spherical optical components. Background Technology

[0002] In one type of spherical optical component structure, the center of the component is a spherical arc shape, for example, the upper surface is an upward-convex arc surface, a flat surface, or a concave arc surface, while the lower surface is an upward-convex arc surface. Chamfers are machined at the edges of the spherical optical component to facilitate its use. Generally, for spherical optical components with relatively small concave radii, the chamfering of the concave edge is done by directly grinding the lower surface of the spherical optical component using a surface grinder. Because the concave radius is small, the arc contour of the concave surface is significantly curved. After contact with the surface grinder, only the edge of the concave surface contacts the surface of the grinder, while the concave surface is located above the plane of the grinder. Therefore, during processing, only the spherical optical component needs to be manually pressed onto the surface grinder for chamfering, and the polished surface in the center of the concave surface is less likely to be scratched or damaged.

[0003] However, for concave surfaces with large radii, exceeding 1000mm or even 2000mm, where the angle of the concave surface (the angle between the two radii passing through the vertex and edge of the surface) is less than approximately 2°, the concave arc profile of such spherical optical components is not obvious, and the actual profile appearance is very close to a plane. If existing flat grinding wheels are used to chamfer the edges, the lower surface of the spherical optical component will wobble on the grinding surface of the flat grinding wheel, causing the polished surface of the concave surface to rub against the surface of the flat grinding wheel (grinding surface), thereby scratching the edge of the polished surface and resulting in unqualified product quality.

[0004] Therefore, existing technologies still need to be improved and developed. Utility Model Content

[0005] The purpose of this application is to provide a chamfering tool and chamfering equipment for spherical optical components, which solves the problem that the polished surface of spherical optical components with large concave radii is easily scratched during the chamfering process on a flat mold in the prior art.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0007] On one hand, this application provides a chamfering tool for spherical optical components, comprising:

[0008] A grinding part, the grinding part having a grinding surface, the grinding part forming a cavity, and the edge of the grinding surface forming the opening of the cavity;

[0009] A limiting component is provided on the grinding part. The side of the limiting component and the grinding surface form a limiting cavity. The limiting cavity is used to accommodate the spherical optical component. The lower arc surface of the spherical optical component abuts against the grinding surface.

[0010] In an optional embodiment, the grinding element includes: a plurality of grinding blocks arranged in a circular pattern to form a cavity.

[0011] In one optional embodiment, multiple grinding blocks are evenly spaced at predetermined intervals.

[0012] In an optional embodiment, the grinding block is a circular grinding block.

[0013] In an optional embodiment, the grinding block comprises diamond pellets.

[0014] In an optional embodiment, the grinding element further includes a chassis, on which the grinding element is disposed;

[0015] The chassis rotates, causing the grinding parts to rotate and grinding the lower arc-shaped edge of the spherical optical component.

[0016] In an optional embodiment, the limiting member includes: a plurality of limiting blocks, which are respectively disposed on the grinding surface of the grinding block and surround it in a circular manner.

[0017] In an optional embodiment, the limiting block is a cylindrical limiting block, a spherical limiting block, or a polygonal limiting block, and the number of limiting blocks is at least three, with the three limiting blocks evenly spaced along the circumference.

[0018] In an optional embodiment, the limiting member is bonded and fixed to the grinding part.

[0019] On the other hand, this application proposes a chamfering processing equipment, which includes a driving device and a chamfering processing tool for spherical optical components as described above;

[0020] The chamfering tool is connected to the drive unit and rotates under the drive of the drive unit.

[0021] The beneficial effects of the chamfering tool and chamfering equipment for spherical optical components provided in this application are at least as follows: A cavity is formed by a grinding part, with the edge of the grinding surface forming the opening of the cavity. A limiting cavity is formed between the side of a limiting part and the grinding surface. After the spherical optical component is placed in the limiting cavity, the limiting cavity limits the movement of the spherical optical component on the horizontal plane, preventing it from moving horizontally. The edge of the lower arc-shaped surface of the spherical optical component abuts against the grinding surface, while the concave surface in the middle of the lower arc-shaped surface is located in the cavity. Pressure is applied to the spherical optical component, causing it to press against the grinding surface. When the grinding part rotates, a chamfer is formed on the edge of the lower arc-shaped surface of the spherical optical component. The concave surface in the middle of the lower arc-shaped surface is protected by the cavity, preventing the grinding part from scraping against the concave surface and ensuring that the polished surface of the concave surface is not damaged. Furthermore, the spherical optical components are less prone to wobbling during processing, avoiding issues such as edge rubbing and non-circular machining diameters. In particular, for spherical optical components with large-radius concave surfaces, the chamfering process achieves precise machining diameter dimensions without damaging the polished concave surface. Moreover, the simple tool structure improves the efficiency of chamfering. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic diagram of a chamfering tool for spherical optical components provided in this application embodiment;

[0024] Figure 2 A top view of a chamfering tool for spherical optical components provided in an embodiment of this application;

[0025] Figure 3 A schematic diagram illustrating the connection between a chamfering tool for spherical optical components and the chamfering process, as provided in this application embodiment;

[0026] Figure 4 This is a cross-sectional view of a chamfering tool for spherical optical components provided in an embodiment of this application during chamfering.

[0027] The following are the labeling elements in the figure:

[0028] 10. Spherical optical component; 11. Lower arc surface; 100. Grinding component; 110. Grinding surface; 120. Cavity; 130. Grinding block; 140. Chassis; 200. Limiting component; 210. Limiting cavity; 220. Limiting block. Detailed Implementation

[0029] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0030] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it may be directly or indirectly located on that other component. When a component is referred to as "connected to" another component, it may be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate orientations or positions based on the accompanying drawings, and are for ease of description only, and should not be construed as limiting the technical solution. 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. "A plurality" means two or more, unless otherwise explicitly defined.

[0031] The following is an explanation of the names used in this application:

[0032] In this embodiment, a spherical optical component refers to a spherical optical component whose lower arc surface (lower surface) is a concave arc surface.

[0033] Spherical optical components with large concave radius, in this embodiment, refer to spherical optical components with a concave arc radius exceeding 2000 mm.

[0034] In existing technologies, when chamfering the surface of a surface abrasive, the polished surface is scratched, and the diameter of the spherical surface is not round. Similarly, when mechanically cutting the edges to create right angles, edge rubbing and non-round diameter issues also occur. To address these problems in chamfering, this embodiment proposes the following specific implementation:

[0035] Example 1

[0036] Please see Figure 1 , Figure 3 This embodiment proposes a chamfering tool for spherical optical components, used to chamfer the edges of the spherical optical component 10, which is typically circular. For example... Figure 1As shown, the chamfering tool mainly includes a grinding component 100 and a limiting component 200. For ease of structural description, in this embodiment, the spherical optical component is located above the grinding component 100, and the lower surface of the spherical optical component is ground and chamfered by rotating the grinding component 100 below. The grinding component 100 has a grinding surface 110, which is the upper surface of the grinding component 100. Figure 2 As shown, the grinding workpiece 100 forms a cavity 120, and the edge of the grinding surface 110 forms the opening of the cavity 120. Figure 1 , Figure 2 As shown, the limiting member 200 is fixedly mounted on the grinding part 100, and the side of the limiting member 200 and the grinding surface 110 form a limiting cavity 210, as shown. Figure 2 , Figure 4 As shown, the limiting cavity 210 is used to accommodate the spherical optical component 10. After the spherical optical component 10 is installed in the limiting cavity 210, the sidewall of the limiting component 200 limits the spherical optical component 10, preventing it from moving in the horizontal direction. The lower arc-shaped surface 11 of the spherical optical component 10 abuts against the grinding surface 110. After the spherical optical component 10 is subjected to pressure from above, the edge of the spherical optical component 10 abuts against the grinding surface 110. The grinding component 100 below rotates as a whole, thereby grinding the edge of the spherical optical component 10 to form a chamfer. During the edge grinding process, the middle part of the already polished lower arc-shaped surface 11 is cleared by the cavity 120. In addition, during the chamfering process, the cavity also accommodates the middle part of the lower arc-shaped surface 11 that is not chamfered, thus realizing the edge chamfering process.

[0037] Please see Figure 1 , Figure 2 , Figure 3This embodiment provides a chamfering tool for spherical optical components. A grinding member 100 forms a cavity 120, and the edge of the grinding surface 110 forms the opening of the cavity 120. A limiting member 200 and the grinding surface 110 form a limiting cavity 210. After the spherical optical component 10 is placed in the limiting cavity 210, the limiting cavity 210 limits the movement of the spherical optical component 10 on the horizontal plane, preventing it from moving horizontally. The edge of the lower arcuate surface 11 of the spherical optical component 10 abuts against... The grinding surface 110 is used to press the spherical optical component 10 against the grinding surface 110. The concave surface of the lower arc-shaped surface 11 of the spherical optical component 10 is located in the cavity 120. When the grinding part 100 rotates, a chamfer is formed on the edge of the lower arc-shaped surface 11 of the spherical optical component 10. The concave surface of the lower arc-shaped surface 11 of the spherical optical component 10 is protected by the cavity 120, preventing the grinding part 100 from rubbing against the concave surface and ensuring that the polished surface of the concave surface is not damaged. Furthermore, the spherical optical component 10 is less prone to wobbling during processing, avoiding edge rubbing and non-circular machining diameter issues. Especially for spherical optical components 10 with large-radius concave surfaces, precise machining diameter dimensions are achieved during chamfering without damaging the polished surface of the concave surface. Moreover, the simple tool structure not only ensures the chamfering quality of the spherical optical component 10 but also improves the efficiency of the chamfering process.

[0038] Furthermore, different angles of the grinding surface 110 in this embodiment can produce chamfers of different angles. For example, when all grinding surfaces 110 are inclined at 45° toward the center of rotation, a 45° chamfer is formed at the edge of the lower surface of the spherical optical element 10. In this embodiment, the grinding surface 110 is a plane parallel to the horizontal plane, so a plane is machined at the edge of the spherical optical element 10, which is perpendicular to the central axis of the spherical optical element 10, thereby forming a right angle.

[0039] In this embodiment, the grinding element 100 can be a ring along the edge of the chassis 140. Specifically, the ring is fixedly mounted on the chassis, its inner cavity forms a recessed cavity, and its upper surface forms a grinding surface. The grinding element 100 can also have other shapes and structures. Please refer to [link to relevant documentation]. Figure 1 , Figure 2 , Figure 4Furthermore, the grinding part 100 in this embodiment specifically includes a plurality of grinding blocks 130, which are arranged in a circular pattern to form a cavity 120. The edges of the grinding blocks 130, after rotation, form a complete circular outline, the same size as the inner edge of the chamfer to be processed. Since commercially available abrasive products are mostly in block form, using grinding blocks 130 facilitates the direct processing of this grinding part 100 using standardized abrasives, thus reducing the cost of the grinding part 100. Moreover, the grinding blocks 130 can be arranged according to the size of the area requiring chamfering, offering greater flexibility in size adjustment and improved practicality.

[0040] In other structures, ring-shaped abrasives can also be used. Ring-shaped abrasives have good grinding connectivity, but they need to be machined according to the inner edge dimensions of the chamfer. One type of ring-shaped abrasive can only be used for one specification of spherical optical component, resulting in poor flexibility. In addition, ring-shaped abrasives need to be specially customized, which will increase the cost accordingly.

[0041] like Figure 1 , Figure 2 As shown, in this embodiment, the multiple grinding blocks 130 are evenly spaced at predetermined intervals. The interval between the grinding blocks 130 should not be too large, and should be between 1-3 mm to ensure continuity during the grinding process and meet the machining accuracy requirements of the chamfered surface. Furthermore, the even arrangement of the grinding blocks 130 makes the grinding process smoother and more stable.

[0042] Alternatively, multiple grinding blocks 130 can be arranged close together without gaps, thus achieving chamfering.

[0043] Please see Figure 1 Furthermore, in this embodiment, the grinding block 130 is a circular grinding block 130. Most abrasives on the market are circular, and the circular grinding block 130 can be purchased as a standard part or obtained by directly cutting from cylindrical abrasives. Therefore, the circular grinding block 130 can be easily obtained, reducing costs.

[0044] Furthermore, the grinding block 130 in this embodiment includes diamond pellets. Diamond pellets can be used as both coarse and fine grinding discs, making them highly practical. Moreover, diamond pellets are mainly composed of diamond micron powder and a binder sintered together, exhibiting strong wear resistance, long service life, and the ability to withstand significant grinding loads. Therefore, using diamond pellets for chamfering can improve production efficiency and the quality of the chamfering.

[0045] Please see Figure 1 , Figure 3Furthermore, the grinding component 100 in this embodiment also includes a chassis 140, on which the grinding component 100 is disposed. The chassis 140 is a disc, and the grinding components 100 are arranged around the center of the circular chassis 140. The chassis 140 rotates to drive the grinding components 100 to rotate and grind the edge of the lower arc surface 11 of the spherical optical component 10. The bottom of the chassis 140 is provided with a mounting part for connecting the driving device, such as a screw connection and a groove-boob mating structure. Under the drive of the driving device, the chassis 140 is rotated, thereby driving the grinding component 100 and the limiting member 200 to rotate together, while the spherical optical component 10 does not rotate in the limiting cavity 210, thereby achieving chamfering of the edge of the lower arc surface 11 of the spherical optical component 10.

[0046] Please see Figure 1 , Figure 2 , Figure 3 Furthermore, in this embodiment, the limiting member 200 specifically includes: a plurality of limiting blocks 220, which are respectively disposed on the grinding surface 110 of the grinding block 130 and arranged in a circumferential manner. The limiting blocks 220 can be non-deformable plastic parts. The limiting blocks 220 are disposed on the upper surface of the grinding block 130 to form a limiting cavity 210. The area of ​​the limiting cavity 210 is larger than the area of ​​the clearance cavity 120, that is, the outer wall of the limiting block 220 is spaced at a certain distance from the opening edge of the clearance cavity 120. On the line connecting the center of the clearance cavity 120 to the center of the grinding block 130, this distance can be the width of the chamfer to be processed. During the chamfering process, the plurality of limiting members 200 also rotate, and the inner contour generated by the rotation matches the outer diameter of the spherical optical element 10. The limiting block 220 enables multi-point limiting of the spherical optical component 10 on its circumference, making the limiting of the spherical optical component 10 more stable, so that the spherical optical component 10 can be embedded in the space enclosed by multiple limiting blocks 220 without shaking in the horizontal direction.

[0047] Please see Figure 1 , Figure 2 , Figure 3 Furthermore, the limiting block 220 can be a cylindrical limiting block 220, a spherical limiting block 220, or a polygonal limiting block 220, and the number of limiting blocks 220 is at least three, with the three limiting blocks 220 evenly spaced along the circumference. In this embodiment, the limiting block 220 is a cylindrical limiting block 220. When the spherical optical element 10 is placed in the limiting cavity 210 enclosed by the cylindrical limiting block 220, the outer wall of the spherical optical element 10 makes point contact with the cylindrical limiting block 220. The cylindrical limiting block 220 has a simple structure, is easy to obtain, and can reduce costs.

[0048] In addition, regardless of whether a spherical limiting block 220 or a polygonal limiting block 220 is used, it is only necessary for the outer wall of the limiting block 220 to make point contact with the spherical surface.

[0049] Furthermore, in this embodiment, the limiting member 200 is bonded and fixed to the grinding part 100. The bonding method is simple and secure, and the bonded limiting member 200 can stably limit the spherical optical part 10.

[0050] Example 2

[0051] This embodiment provides a chamfering processing device, including a driving device and a chamfering processing tool for spherical optical components as described above. The driving device can be a polishing machine with a rotating shaft, and the chamfering processing tool is connected to the driving device and rotated by the driving device.

[0052] In summary, the chamfering tool and equipment for spherical optical components provided in this application form a limiting cavity between the side of the limiting member and the grinding surface. After the spherical optical component is placed into the limiting cavity, the limiting cavity limits the movement of the spherical optical component on the horizontal plane. Further polishing of the spherical optical component allows for the completion of spherical chamfering without damaging the polished surface. The structure is simple and the chamfering efficiency is high.

[0053] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A chamfering tool for spherical optical components, characterized in that, include: A grinding component includes a chassis and multiple grinding blocks. The multiple grinding blocks are arranged on the chassis and surround each other in a circular manner to form a cavity. The grinding component has a grinding surface. The edge of the lower arc surface of the spherical optical component abuts against the grinding surface. The chassis rotates to drive the grinding component to rotate and grind the edge of the lower arc surface of the spherical optical component. The limiting component includes at least three limiting blocks, which are respectively disposed on the grinding surface of the grinding block and are evenly spaced in a circle. The side of the limiting component and the grinding surface form a limiting cavity, which is used to accommodate the spherical optical component. The inner contour generated after the multiple limiting blocks are rotated matches the outer diameter of the spherical optical component. On the line connecting the center of the cavity to the center of the grinding block, the distance between the outer wall of the limiting block and the opening edge of the cavity is the width of the chamfer to be processed.

2. The chamfering tool for spherical optical components as described in claim 1, characterized in that, The multiple grinding blocks are evenly spaced at predetermined intervals.

3. The chamfering tool for spherical optical components as described in claim 2, characterized in that, The grinding block is a circular grinding block.

4. The chamfering tool for spherical optical components as described in claim 3, characterized in that, The grinding block comprises diamond pellets.

5. The chamfering tool for spherical optical components as described in claim 1, characterized in that, The limiting block is a cylindrical limiting block, a spherical limiting block, or a polygonal limiting block, and the number of the limiting blocks is at least 3, with the 3 limiting blocks evenly spaced along the circumference.

6. The chamfering tool for spherical optical components as described in any one of claims 1-5, characterized in that, The limiting component is bonded and fixed to the grinding workpiece.

7. A chamfering processing device for spherical optical components, characterized in that, Includes a drive unit, and a chamfering tool for spherical optical components as described in any one of claims 1-6; The chamfering tool is connected to the drive unit and rotates under the drive of the drive unit.

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