Cylindrical surface part machining method

Abstract

The invention relates to the technical field of optical part machining, and provides a cylindrical part machining method which comprises the steps that the outer circle face of a blank piece is wound and bonded to a square brick, the square brick is wound to a glass disc, wax sealing and wax filling are sequentially conducted on the blank piece, grinding and polishing are conducted, a first end face is flattened to a first parameter threshold value, and the side perpendicularity of the blank piece is trimmed. Controlling the side perpendicularity to be smaller than a first side perpendicularity preset value, and discharging to obtain a first part; the first part is bonded and fixed in the through cavity of the mold, the first end face is exposed out of the first port, one side of a second port of the mold is bonded and fixed to the glass disc, the first end face is frosted and polished to be convex or concave, and a second part is obtained; and the second end face of the second part is milled to be in a taper angle shape, and the cylindrical surface part is obtained. Before the shapes of the two ends of the cylindrical surface part are machined, the side perpendicularity of the cylindrical surface part is corrected, it is guaranteed that the cylindrical surface part has high-precision side perpendicularity precision and center deviation during subsequent concave-convex surface and taper angle machining, the machining process is simple and convenient, and precision is high.

Description

Technical Field

[0001] The present application relates to the technical field of optical parts processing, and more specifically, to a method for processing cylindrical parts. Background Art

[0002] Cylindrical optical parts are a special type of optical element, which is cylindrical in length direction and has one or two surfaces with spherical curvature. This type of optical part is mainly used to control the propagation characteristics of light beams in one direction, while the other direction remains unchanged or is affected differently. Cylindrical optical parts are divided into convex cylindrical parts and concave cylindrical parts, which are used to converge and diverge light respectively.

[0003] Existing traditional cold processing equipment is suitable for processing flat products or spherical products of conventional shapes and sizes. With the help of conventional fixtures, traditional cold processing equipment can complete the processing normally. However, for the processing of cylindrical parts, since the shape of the cylinder is a long lens and the polishing index is strict, traditional processing methods are difficult to meet the processing of this part, the surface error is difficult to meet the index requirements, and the processing accuracy is low.

[0004] Therefore, the existing technology still needs to be improved and developed. Summary of the invention

[0005] The purpose of the present application is to provide a method for processing cylindrical parts to solve the technical problem of low processing accuracy of cylindrical optical parts in the prior art.

[0006] To achieve the above purpose, the technical solution adopted in this application is: to provide a method for processing cylindrical parts, including:

[0007] A blank, a square brick, a glass plate and a mold are provided, wherein the blank has a first end face, a second end face and an outer cylindrical face, and a through cavity matching the size of the blank is provided inside the mold, and the through cavity forms a first port and a second port at two ends of the mold;

[0008] The outer circumferential surface of the blank is bonded to the square brick, the square brick is mounted on the glass plate, the blank is waxed and waxed in sequence, the first end surface is polished and flattened to a first parameter threshold, the side droop of the blank is trimmed, the side droop is controlled to be less than a first side droop preset value, and the first part is obtained by mounting the blank;

[0009] The first part is bonded and fixed in the through cavity of the mold so that the first end surface is exposed at the first port, and the second port side of the mold is bonded and fixed on the glass plate, and the first end surface is frosted and polished to a convex surface or a concave surface, and the first part is removed from the plate and the center deviation, surface shape, and curvature radius of the first end surface are detected to reach a second parameter threshold, thereby obtaining a second part;

[0010] The second end face of the second part is milled into a cone shape, and the diameter, cone angle, and coaxiality of the cone are detected to reach a third parameter threshold, so as to obtain a cylindrical part.

[0011] Furthermore, the trimming of the side droop of the blank comprises:

[0012] The first end face and the second end face are preliminarily frosted and polished to level the first end face and the second end face so that the verticality deviation angle between the outer circular surface and the first end face and the second end face is smaller than a first side droop preset value.

[0013] Furthermore, the wax sealing and wax pouring on the first part in sequence include:

[0014] Clean the first part and the bricks to remove impurities and contaminants on the surface;

[0015] Align the first part with the square brick;

[0016] The square bricks are melted onto the first part at high temperature to form a first sealing layer, and then cooled to obtain the first part sealed with wax;

[0017] Heat the alloy wax or resin until it is molten;

[0018] The molten material is injected around the first part and covers at least half of the length of the first part. The material is cooled and solidified to form the first part with a second sealing layer.

[0019] In some embodiments, the grinding, polishing and flattening the first end surface and the second end surface to a first parameter threshold value includes:

[0020] Using a uniaxial sander to sand the first end surface and the second end surface;

[0021] The first end face and the second end face are polished by a polishing machine, and the aperture can be controlled to be photosensitive.

[0022] Furthermore, before the wax sealing and wax filling are sequentially performed on the first part, the method further comprises:

[0023] Bonding a first matching plate on the glass plate, the first matching plate surrounding the first part, and a surface of the first matching plate facing away from the glass plate being not lower than the first end surface;

[0024] Wherein, when the first end surface and the second end surface are frosted and polished, the first matching disk is frosted and polished at the same time.

[0025] In some embodiments, the mold is further provided with a plurality of third ports connected to the through hole around the first port, and the first part is bonded and fixed in the through cavity of the mold, including:

[0026] Asphalt is bonded to the outer circumferential surface around the first end surface, a second matching disk is bonded to the asphalt, and asphalt is bonded to the second end surface;

[0027] The second end face of the first part is inserted into the through hole from the first port, the second disc is bonded to the third port, the first end face is bonded to and exposed to the first port, and the second end face of the first part is bonded to the second port.

[0028] Furthermore, the step of bonding and fixing one side of the second port of the mold to the glass plate comprises:

[0029] When the first part is bonded and fixed in the through cavity of the mold, the asphalt on the second end surface is exposed to the second port;

[0030] The second port of the mold is heated, and the second port is vertically bonded to the glass plate.

[0031] In some embodiments, the step of grinding and polishing the first end surface to a convex surface or a concave surface comprises:

[0032] Control the center deviation of the uniaxial sander to be within a first taper threshold, and use the uniaxial sander to sand the first end surface and the matching plate, so that the first end surface forms a convex surface or a concave surface;

[0033] The first end surface and the second matching disk are polished using a ten-axis polishing machine to control the lengths to be consistent.

[0034] Furthermore, the first part of the lower plate includes:

[0035] The first component is placed in a gasoline solution, and the component is placed on the plate by immersion or by heating.

[0036] In some embodiments, the step of milling the second end surface of the second part into a cone shape includes:

[0037] The angle of the grinding wheel is adjusted so that the grinding wheel is ground along the outer cylindrical surface of the second part around the second end surface to form a required taper milling to a cone angle shape.

[0038] The beneficial effects of the cylindrical part processing method provided by the present application are at least:

[0039] Before processing the appearance of both ends of the cylindrical parts, the lateral vertical of the cylindrical parts can be corrected to ensure that the cylindrical parts have high-precision lateral vertical accuracy and center deviation during subsequent concave and convex surface and taper angle processing. The processing process is simple and convenient, and the processing accuracy is high, which can meet the processing index requirements.

[0040] In the process of grinding the first end face and the second end face into a concave surface or a convex surface, arranging the first matching disk and the second matching disk around the processing surface can reduce damage to the processing surface and reduce the risk of edge collapse, thereby achieving the effect of improving processing quality and processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0042] Figure 1 A flowchart of a method for processing a cylindrical part provided in an embodiment of the present application;

[0043] Figure 2 A schematic diagram of the structure of a blank provided in an embodiment of the present application;

[0044] Figure 3 A schematic diagram of the structure of the blank provided in the embodiment of the present application when bonded to a square brick;

[0045] Figure 4 A schematic diagram of the structure of the first matching plate provided in an embodiment of the present application after the blank is mounted on the plate;

[0046] Figure 5 A schematic diagram of the structure of the blank provided in the embodiment of the present application being bonded in a mold;

[0047] Figure 6 A schematic diagram of the structure when a second matching plate is bonded to a blank provided in an embodiment of the present application;

[0048] Figure 7 A structural schematic diagram of a mold is provided for an embodiment of the present application.

[0049] Among them, the reference numerals in the figure are:

[0050] 1. blank; 11. first end face; 12. second end face; 13. outer cylindrical surface;

[0051] 2. Square bricks;

[0052] 3. Glass plate;

[0053] 4. mold; 41. through cavity; 42. first port; 43. second port; 44. third port;

[0054] 5. Asphalt;

[0055] 6. The first matching plate;

[0056] 7. The second dish. DETAILED DESCRIPTION

[0057] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0058] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be directly or indirectly located on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positions shown in the accompanying drawings and are only for the convenience of description and cannot be understood as limitations on the present technical solution. The terms "first" and "second" are only used for the convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0059] Cylindrical parts are a special type of optical element that has a cylindrical curvature instead of a spherical curvature and an elongated cylindrical shape. Since the shape of the cylinder is a long lens and the polishing index is strict, conventional processing methods cannot meet the requirements of processing this part, or are very difficult, and the surface error does not meet the requirements of the drawing.

[0060] Among them, the long cylindrical cylindrical parts are mainly used to control the propagation characteristics of the light beam in one direction. The perpendicularity between the two end faces and the outer cylindrical surface affects the quality of the light beam propagation. The cylindrical optical parts are divided into convex cylindrical parts and concave cylindrical parts, which are used to converge and diverge light respectively. When processing convex cylindrical parts or concave cylindrical parts by traditional technology, the outer cylindrical surface of the cylindrical parts is positioned by a fixture, and then the two end faces are directly processed. However, the center deviation and verticality error of the processed cylindrical parts are relatively large, which cannot meet the processing quality.

[0061] The following describes a method for processing a cylindrical part according to an embodiment of the present application in conjunction with the accompanying drawings. The processing method of the present application is applicable to a cylindrical part having a concave or convex surface at one end and a pointed tip at the other end.

[0062] Furthermore, the names involved in this application are explained as follows:

[0063] Blank: In this application, it refers to the unfinished parts used to manufacture optical components (such as lenses, reflectors, etc.). These parts usually need to undergo a series of processing and treatment to become the final optical components.

[0064] Square brick: refers to the workpiece used to assist parts in processing and positioning. Among them, the square brick has positioning structures such as pads and cuboids: square bricks are used to replicate the tooling of part angles, and the angle accuracy is very high, reaching the second level; the pad can be a single pad: the pad is short, and only one part can be processed on a single pad; the pad can be a long pad: the pad is long, and usually at least two parts can be processed on a long pad. The cuboid is used to replicate the verticality between the faces of the parts.

[0065] Matching tray: refers to the tool used to bond to the surface of optical parts during the manufacturing process of optical parts. It can help operators protect specific surfaces on optical parts.

[0066] Glass plate: refers to the glass plate used to carry and fix optical components during the assembly process of optical parts. It is used in optical components that require high-precision bonding. The glass plate not only provides a stable support platform, but also serves as a reference surface during the optical adhesive bonding process.

[0067] Mold: refers to the tool or equipment used to manufacture optical parts, with high-precision shape and surface quality to accurately position the optical parts and ensure that the produced optical parts can meet strict optical performance requirements.

[0068] See below Figure 1 , Figure 1 A flow chart showing a method for processing a cylindrical part of the present application is shown, comprising the following steps:

[0069] Step S1: Provide a blank 1, a square brick 2, a glass plate 3 and a mold 4, see Figure 2 and Figure 7 The blank 1 has a first end face 11, a second end face 12 and an outer cylindrical surface 13. A through cavity 41 matching the size of the blank 1 is provided inside the mold 4. The through cavity 41 forms a first port 42 and a second port 43 at both ends of the mold 4.

[0070] Step S2: See Figure 3 and Figure 4 , adhere the outer circumferential surface of the blank to the square brick, put the square brick on the glass plate, seal and fill the blank with wax in turn, grind and polish and flatten the first end face to the first parameter threshold, trim the side sag of the blank, control the side sag to be less than the first side sag preset value, and obtain the first part by lowering the plate.

[0071] Step S3: The first part is bonded and fixed in the through cavity 41 of the mold 4 so that the first end face 11 is exposed at the first port 42, and one side of the second port 43 of the mold 4 is bonded and fixed on the glass plate 3, and the first end face 11 is frosted and polished to a convex or concave surface. The first part is removed from the plate and the center deviation, surface shape, and curvature radius of the first end face 11 are detected to reach the second parameter threshold, so as to obtain the second part.

[0072] Step S4: milling the second end face 12 of the second part into a cone shape, detecting whether the cone diameter, cone angle, and coaxiality reach a third parameter threshold, and obtaining a cylindrical part.

[0073] The present application adheres the outer cylindrical surface 13 of the blank 1 to the square brick 2, uses the side of the square brick 2 to copy the verticality of the outer cylindrical surface 13, and then repairs the lateral droop of the blank 1, so that the lateral droop of the first end face 11 and the second end face 12 with the outer cylindrical surface 13 is less than the first lateral droop preset value. In this way, before fine machining, the lateral droop and center deviation of the first part reach the preset standard to ensure the machining accuracy during subsequent fine machining. Then, the first end face 11 and the second end face 12 are further fine-machined respectively, so that the lateral droop of the first end face 11 and the second end face 12 with the outer cylindrical surface 13 is less than the second lateral droop preset value, further improving the lateral droop accuracy and center deviation of the first part. Finally, through the positioning and matching of the mold 4, the first end face 11 is ground and polished to a convex or concave surface, and the second end face 12 is milled to a cone angle.

[0074] Through the processing method of this embodiment, the lateral verticality of the cylindrical part can be corrected before processing the external shape at both ends of the cylindrical part, ensuring that the cylindrical part has high-precision lateral verticality accuracy and center deviation during subsequent concave and convex surface and taper angle processing. The processing process is simple and convenient, and the processing accuracy is high, which can meet the processing index requirements.

[0075] In some embodiments, in step S2, trimming the side droop of the blank 1 includes: performing preliminary grinding and polishing on the first end face 11 and the second end face 12, flattening the first end face 11 and the second end face 12, and making the verticality deviation angle between the outer cylindrical surface 13 and the first end face 11 and the second end face 12 smaller than the first side droop preset value.

[0076] The purpose of this step is to correct the lateral drop of the cylindrical part and control it within 2′. Only when the lateral drop is corrected can the angle between the processed surface plane and the outer circle be 90°. This step is the first step to ensure the center deviation.

[0077] Furthermore, by performing step S2, the blank 1 is subjected to a first-level side droop correction to obtain a first part, and then a second-level side droop finishing is performed to obtain a first part with a higher side droop accuracy.

[0078] Specifically, the wax sealing and wax pouring on the first part in sequence include the following steps:

[0079] Clean the glass plate 3 and the square brick 2. Thick stripes can be seen on the square brick 2 and the glass plate 3, and the glossy glue condition is met. Glue the outer cylindrical surface 13 of the first part onto the square brick 2, and then put the square brick 2 onto the glass plate 3.

[0080] Clean the first part and the bricks to remove impurities and contaminants on the surface;

[0081] Align the first part with the square brick;

[0082] The square bricks are melted onto the first part at high temperature to form a first sealing layer, and then cooled to obtain the first part sealed with wax;

[0083] Heat the alloy wax or resin until it is molten;

[0084] The molten material is injected around the first part and covers at least half of the length of the first part. The material is cooled and solidified to form the first part with a second sealing layer.

[0085] Both wax sealing and wax pouring can improve the sealing and reliability of the package. Wax sealing uses glass or metal as square bricks and forms a sealing structure through high-temperature welding. Wax pouring uses low-melting-point alloy wax to fill the gaps to further improve the sealing performance. A preliminary sealing structure is formed by wax sealing, and the sealing effect is further enhanced on this basis by wax pouring, so that when processing the first end face 11, the first part on the side of the second end face 12 can be sealed and protected, and when processing the second end face 12, the first part on the side of the first end face 11 can be sealed and protected, thereby achieving the effect of improving the processing accuracy.

[0086] Further, in step S3 and step S4, after the first part is sealed and fixed by wax sealing and wax filling, the first end face 11 and the second end face 12 are frosted and polished and flattened to the first parameter threshold, which specifically includes the following steps:

[0087] Use a single-axis sander to sand the first end surface 11 to control the size: 72.65+0.05;

[0088] Polishing the first end surface 11 by using a polishing machine, and controlling the aperture to be polished;

[0089] Use a single-axis sander to sand the second end surface 12 to control the size: 72.41+0.01;

[0090] Polish the second end surface 12 using a polishing machine, and control the aperture to be photosensitive;

[0091] The lower plate is tested for parallelism and smoothness to ensure that the perpendicularity between the first end face 11 and the second end face 12 and the outer cylindrical surface 13 is less than the second side droop preset value, thereby obtaining the first part.

[0092] In some embodiments, before wax sealing and wax filling are performed on the first part in sequence, the method further includes:

[0093] A first matching plate 6 is bonded on the glass plate 3, the first matching plate 6 surrounds the first part, and a surface of the first matching plate 6 facing away from the glass plate 3 is not lower than the first end surface 11;

[0094] Among them, when the first end face 11 and the second end face 12 are frosted and polished, the first matching plate 6 is also frosted and polished at the same time, thereby achieving the effect of protecting the specific surface on the first part. For example, when the first end face 11 is frosted and polished, the first matching plate 6 located around the first part will also be processed synchronously, reducing the pressure on the first part, reducing damage to the processed surface of the first part, reducing the risk of edge collapse, and thus improving the processing quality and processing accuracy.

[0095] Further, see Figure 5 and Figure 7 The mold 4 is also provided with a plurality of third ports 44 connected to the through holes around the first port 42. In step S3, the first part is bonded and fixed in the through cavity 41 of the mold 4, including:

[0096] See also Figure 6 , asphalt 5 is bonded to the outer circumferential surface 13 around the first end surface 11, the second matching plate 7 is bonded to the asphalt 5, and the asphalt 5 is bonded to the second end surface 12;

[0097] The second end face 12 of the first part is inserted into the through hole from the first port 42 , the second plate 7 is bonded to the third port 44 , the first end face 11 is bonded and exposed to the first port 42 , and the second end face 12 of the first part is bonded to the second port 43 .

[0098] It can be understood that when the first end face 11 and the second end face 12 are ground into concave or convex surfaces, after the second matching plate 7 is arranged around the processing surface, the damage to the processing surface can be reduced, the risk of edge collapse can be reduced, and the processing quality and processing accuracy can be improved.

[0099] Furthermore, before the second end face 12 of the first part is inserted into the through hole through the first port 42, the mold 4 is heated to a first temperature, so that the asphalt 5 around the first end face 11 can melt and directly bond to the mold 4. Specifically, the asphalt 5 around the first end face 11 is bonded and fixed to the first port 42, and the asphalt 5 under the second matching plate 7 is bonded and fixed to the third port 44.

[0100] Further, in step S3, one side of the second port 43 of the mold 4 is bonded and fixed on the glass plate 3, including:

[0101] When the first part is bonded and fixed in the through cavity 41 of the mold 4, the asphalt 5 on the second end surface 12 is exposed to the second port 43;

[0102] The second port 43 of the mold 4 is heated, and the second port 43 is vertically bonded to the glass plate 3 , wherein the mold 4 can be bonded to the glass plate 3 by its own weight.

[0103] Further, in step S3, the first end surface 11 is ground and polished to a convex surface or a concave surface, including:

[0104] Control the center deviation of the uniaxial sander to the first taper threshold, use the uniaxial sander to sand the first end surface 11 and the matching plate, so that the first end surface 11 forms a convex surface or a concave surface, wherein the control size is: 72.38-0.01, and the control center deviation is: C reverse 8′;

[0105] Use a ten-axis polishing machine to polish the first end face 11 and the second matching disk 7, control the length to be consistent, and control the curvature radius and surface shape, B to reach a preset range.

[0106] In some embodiments, in step S3, removing the first part from the plate includes placing the first part in a gasoline solution, removing the part from the plate by immersion, or removing the part from the plate by heating.

[0107] Further, in step S4, the second end surface 12 of the second part is milled into a cone angle shape, including:

[0108] The angle of the grinding wheel is adjusted so that the grinding wheel can grind along the outer cylindrical surface 13 of the second part around the second end surface 12 to form a required taper milling to a cone angle shape.

[0109] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A method for processing cylindrical parts, characterized in that: include: A blank, a square brick, a glass plate and a mold are provided, wherein the blank has a first end face, a second end face and an outer cylindrical face, and a through cavity matching the size of the blank is provided inside the mold, and the through cavity forms a first port and a second port at two ends of the mold; The outer circumferential surface of the blank is bonded to the square brick, the square brick is mounted on the glass plate, the blank is waxed and waxed in sequence, the first end surface is polished and flattened to a first parameter threshold, the side droop of the blank is trimmed, the side droop is controlled to be less than a first side droop preset value, and the first part is obtained by mounting the blank; The first part is bonded and fixed in the through cavity of the mold so that the first end surface is exposed at the first port, and the second port side of the mold is bonded and fixed on the glass plate, and the first end surface is frosted and polished to a convex surface or a concave surface, and the first part is removed from the plate and the center deviation, surface shape, and curvature radius of the first end surface are detected to reach a second parameter threshold, thereby obtaining a second part; The second end face of the second part is milled into a cone shape, and the diameter, cone angle, and coaxiality of the cone are detected to reach a third parameter threshold, so as to obtain a cylindrical part.

2. The method for processing cylindrical parts according to claim 1, characterized in that: The side droop of the blank is trimmed, comprising: The first end face and the second end face are preliminarily frosted and polished to level the first end face and the second end face so that the verticality deviation angle between the outer circular surface and the first end face and the second end face is smaller than a first side droop preset value.

3. The method for processing cylindrical parts according to claim 1, characterized in that: The step of sealing and pouring wax on the first part in sequence comprises: Clean the first part and the bricks to remove impurities and contaminants on the surface; Align the first part with the square brick; The square bricks are melted onto the first part at high temperature to form a first sealing layer, and then cooled to obtain the first part sealed with wax; Heat the alloy wax or resin until it is molten; The molten material is injected around the first part and covers at least half of the length of the first part. The material is cooled and solidified to form the first part with a second sealing layer.

4. The method for processing cylindrical parts according to claim 1, characterized in that: The step of grinding, polishing and flattening the first end surface and the second end surface to a first parameter threshold value includes: Using a uniaxial sander to sand the first end surface and the second end surface; The first end face and the second end face are polished by a polishing machine, and the aperture can be controlled to be photosensitive.

5. The method for processing cylindrical parts according to claim 3, characterized in that: Before the wax sealing and wax filling are sequentially performed on the first part, the method further comprises: Bonding a first matching plate on the glass plate, the first matching plate surrounding the first part, and a surface of the first matching plate facing away from the glass plate being not lower than the first end surface; Wherein, when the first end surface and the second end surface are frosted and polished, the first matching disk is frosted and polished at the same time.

6. The method for processing a cylindrical part according to claim 1, characterized in that: The mold is further provided with a plurality of third ports connected to the through hole around the first port, and the first part is bonded and fixed in the through cavity of the mold, including: Asphalt is bonded to the outer circumferential surface around the first end surface, a second matching disk is bonded to the asphalt, and asphalt is bonded to the second end surface; The second end face of the first part is inserted into the through hole from the first port, the second disc is bonded to the third port, the first end face is bonded to and exposed to the first port, and the second end face of the first part is bonded to the second port.

7. The method for processing a cylindrical part according to claim 6, characterized in that: The step of bonding and fixing one side of the second port of the mold on the glass plate comprises: When the first part is bonded and fixed in the through cavity of the mold, the asphalt on the second end surface is exposed to the second port; The second port of the mold is heated, and the second port is vertically bonded to the glass plate.

8. The method for processing a cylindrical part according to claim 1, characterized in that: The step of grinding and polishing the first end surface to a convex surface or a concave surface comprises: Control the center deviation of the uniaxial sander to be within a first taper threshold, and use the uniaxial sander to sand the first end surface and the matching plate, so that the first end surface forms a convex surface or a concave surface; The first end surface and the second matching disk are polished using a ten-axis polishing machine to control the lengths to be consistent.

9. The method for processing a cylindrical part according to claim 1, characterized in that: The first part of the lower plate includes: The first component is placed in a gasoline solution and the component is placed on the plate by immersion or by heating.

10. The method for processing a cylindrical part according to claim 1, characterized in that: The step of milling the second end surface of the second part into a cone shape comprises: The angle of the grinding wheel is adjusted so that the grinding wheel is ground along the outer cylindrical surface of the second part around the second end surface to form a required taper milling to a cone angle shape.

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