Processing method of light guide rod product

Abstract

The invention provides a processing method of a light guide rod product, which comprises the following steps: providing a blank piece, and processing a first side surface and a second side surface which are adjacent; by taking the first side surface and the second side surface as references, the blank is mounted on a tool, and two end surfaces of the blank are processed by an upper disc to respectively obtain finished product end surfaces; coating the end surfaces of the two finished products to form coated end surfaces of the finished products; bonding an end face protection piece on the end face of the coated finished product, processing an opposite third side face to obtain a third finished product side face, and processing the first side face to obtain a first finished product side face; and side face protection pieces are bonded to the third finished product side face and the first finished product side face through wax, the opposite fourth side face is machined to obtain a fourth finished product side face, and the second side face is machined to obtain a second finished product side face. The problems that in the prior art, in the process that a light guide rod is machined through a matched disc, dismounting difficulty is large, and edge breakage control is not good are solved.

Description

Technical Field

[0001] The present application relates to the technical field of optical component processing, and more specifically, to a processing method for an optical guide rod product. Background Art

[0002] The end-face coated light guide rod product is a square product with six polished faces. Usually, the light guide rod product is a cuboid with four long sides and two end faces. The finished product needs to be coated on the two end faces. In addition to ensuring the dimensions, it is also necessary to ensure that the coating will not be damaged and the edges cannot be chipped.

[0003] Some existing processing methods include using optical glue or glue to bond the glass tray to protect the processed side of the coated light guide rod, and then processing the unprocessed side. However, the optical glue solution leads to high cost of optical glue tray, great difficulty in operation, and difficulty in rapid disassembly. The glue-bonded tray needs to be soaked when disassembling, which makes it difficult to disassemble and has poor control over edge collapse.

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

[0005] The purpose of the present application is to provide a processing method for an optical guide rod product, which solves the problems of difficulty in dismantling and poor edge collapse control during the processing of the optical guide rod using a matching plate in the prior art.

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

[0007] The present application provides a method for processing a light guide rod product, comprising the steps of:

[0008] Providing a blank, and processing adjacent first side surface and second side surface;

[0009] With the first side surface and the second side surface as reference, the blank is mounted on the tooling, and the two end surfaces of the blank are processed on the upper plate to obtain the finished end surfaces respectively;

[0010] Coating the two finished end faces to form coated finished end faces;

[0011] Bonding an end face protection member to the end face of the finished coating product, processing an opposite third side face to obtain a third finished product side face, and processing the first side face to obtain a first finished product side face;

[0012] Wax is used to bond side protection pieces to the third finished product side and the first finished product side, respectively, the opposite fourth side is processed to obtain the fourth finished product side, and the second side is processed to obtain the second finished product side.

[0013] In an optional embodiment, the blank is mounted on a tooling with the first side surface and the second side surface as references, and the two end surfaces of the blank are processed on a plate to obtain the finished end surfaces respectively:

[0014] Rough grinding is performed on the two end faces of the blank respectively;

[0015] respectively performing fine grinding on the two end faces after rough grinding to remove a predetermined first fine machining allowance;

[0016] The two end faces after fine grinding are polished respectively to remove a predetermined first polishing margin, wherein the finish and surface shape of the finished end faces obtained after polishing meet predetermined quality requirements.

[0017] In an optional embodiment, the steps of bonding end face protection members to the finished coated end faces at both ends, processing the opposite third side face to obtain the third finished side face, and processing the first side face to obtain the first finished side face include:

[0018] Adhere end face protection parts to the end faces of the finished coating products at both ends by using UV glue, so that the end face protection parts completely cover the end faces of the finished coating products;

[0019] Taking the first side surface as a reference, processing the third side surface through the optical resin upper plate, removing the chamfers and broken edges between the third side surface and the coated finished end surfaces at both ends, and obtaining the third finished side surface;

[0020] Taking the third finished product side as a reference, the first side is processed by applying a photoresist, and the chamfers and broken edges between the first side and the coated finished product end faces at both ends are removed to obtain the first finished product side.

[0021] In an optional embodiment, the step of processing the third side surface by using the optical adhesive upper plate based on the first side surface includes:

[0022] Roughly sand the third side;

[0023] Fine grinding is performed on the third side surface after rough grinding to remove the predetermined second fine machining allowance;

[0024] The third side surface after fine grinding is polished to remove the predetermined second polishing allowance to obtain a third finished product side surface.

[0025] In an optional embodiment, the step of processing the first side surface by using the optical adhesive upper plate with the processed third side surface as a reference includes:

[0026] Roughly sand the first side;

[0027] Fine grinding is performed on the first side surface after rough grinding to remove a predetermined second fine machining allowance;

[0028] The first side surface after fine grinding is polished to remove a predetermined second polishing allowance to obtain a first finished product side surface.

[0029] In an optional embodiment, in the steps of bonding the side protection piece with wax on the third finished side and the first finished side, processing the opposite fourth side to obtain the fourth finished side, and processing the second side to obtain the second finished side:

[0030] The side protection members are respectively bonded to the side of the third finished product and the side of the first finished product by using molten wax, and the molten wax is solidified to obtain solid wax so that the side protection members completely cover the side of the third finished product and the side of the first finished product;

[0031] Taking the second side surface as a reference, processing the fourth side surface through the optical resin upper plate, removing the chamfers and broken edges between the fourth side surface and the coated finished end surfaces at both ends, and removing the chamfers and broken edges between the fourth side surface and the first finished side surface and the third finished side surface, respectively, to obtain a fourth finished side surface;

[0032] Taking the fourth finished product side as a reference, the second side is processed by applying a photoresist to the upper plate, and the chamfers and broken edges between the second side and the coated finished end faces at both ends are removed. The chamfers and broken edges between the second side and the first finished product side and the third finished product side are also removed to obtain the second finished product side.

[0033] In an optional embodiment, taking the second side as a reference, processing the fourth side by means of a photoresist upper plate, removing the chamfers and broken edges between the fourth side and the coated finished end faces at both ends, and removing the chamfers and broken edges between the fourth side and the first finished side and the third finished side, respectively, to obtain the fourth finished side:

[0034] Roughly sand the fourth side;

[0035] Fine grinding is performed on the fourth side surface after rough grinding to remove the predetermined third fine machining allowance;

[0036] The fourth side surface after fine grinding is polished to remove the predetermined third polishing allowance to obtain a fourth finished product side surface.

[0037] In an optional embodiment, taking the fourth finished product side as a reference, processing the second side through the optical resin upper plate, removing the chamfers and broken edges between the second side and the coated finished end faces at both ends, and removing the chamfers and broken edges between the second side and the first finished product side and the third finished product side, respectively, to obtain the second finished product side:

[0038] Rough-grit the second side;

[0039] Fine grinding is performed on the second side surface after rough grinding to remove a predetermined third fine machining allowance;

[0040] The second side surface after fine grinding is polished to remove a predetermined third polishing allowance to obtain a second finished product side surface.

[0041] In an optional embodiment, the third finishing allowance is greater than the second finishing reserve, and the third polishing allowance is greater than the second polishing allowance.

[0042] In an optional embodiment, after the steps of bonding the side protection piece with wax on the third finished side and the first finished side, processing the opposite fourth side to obtain the fourth finished side, and processing the second side to obtain the second finished side, the step further includes:

[0043] Melting the solid wax by heating to remove the side protection members on the third finished side and the first finished side;

[0044] The UV glue is rendered ineffective by heating, so that the end face protection parts bonded to the end faces of the coated finished products at both ends can be removed.

[0045] The processing method of a light guide rod product provided by the present application has at least the following beneficial effects: firstly, the adjacent first side surface and the second side surface are processed, and then the end surface of the light guide rod is processed as a reference, so that the verticality of the processed end surface of the finished product and the long side surface as a reference can be well guaranteed. After coating on the end surface of the finished product and bonding the end surface protection member, the first side surface and the second side surface that ensure the verticality are respectively used as the reference to process the shape, which not only greatly reduces the problem of chipping and scrapping during coating, but also uses the polished long side surface as the processing reference after ensuring the basic angle, so that the requirements for the matching plate are reduced, the influence of the matching plate quality on the parts is eliminated, the processing cost is saved and the processing efficiency is improved, so that the batch production of the light guide rod product can be realized. Moreover, the side protection member is respectively bonded with wax on the third finished product side surface and the first finished product side surface that have been processed, so as to realize the processing structure of the wax-bonded matching plate, which is not only easy to disassemble after processing, but also can well control the edge collapse, ensuring that each edge has no edge collapse, and the cost is also the lowest. Thus, the problem that the matching plate is not easy to disassemble and the edge collapse is not well controlled by using glue to bond the matching plate is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] 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.

[0047] Figure 1 A schematic flow chart of the main steps of a method for processing a light guide rod product provided in an embodiment of the present application;

[0048] Figure 2A flowchart schematically showing the detailed steps of step S200 in a method for processing a light guide rod product provided in an embodiment of the present application;

[0049] Figure 3 A schematic flow chart of detailed steps of a method for processing a light guide rod product provided in an embodiment of the present application;

[0050] Figure 4 A schematic flow chart of detailed steps of steps S420 and S430 in a method for processing a light guide rod product provided in an embodiment of the present application;

[0051] Figure 5 A flowchart schematically showing detailed steps of steps S520 and S530 in a method for processing a light guide rod product provided in an embodiment of the present application;

[0052] Figure 6 A schematic structural diagram of a blank in a perspective state in a method for processing a light guide rod product provided in an embodiment of the present application;

[0053] Figure 7 A schematic structural diagram of a method for processing a light guide rod product provided in an embodiment of the present application when processing an end face;

[0054] Figure 8 A schematic structural diagram of a method for processing a light guide rod product provided in an embodiment of the present application when processing a first side surface and a third side surface;

[0055] Fig. 9 A structural schematic diagram of the processing of the second side surface and the fourth side surface in a processing method of a light guide rod product provided in an embodiment of the present application.

[0056] Among them, the reference numerals in the figure are:

[0057] 100, blank; 110, first side; 120, second side; 130, third side; 140, fourth side; 150, end face; 200, finished end face of coated product; 210, first finished side; 220, third finished side; 300, end face protection part; 400, side protection part; 500, photoresist stage. DETAILED DESCRIPTION

[0058] 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.

[0059] 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.

[0060] The following is an explanation of the names involved in this application, as follows:

[0061] Light guide rod: A square product with six polished faces and two end faces coated. All edges are not chamfered and no chipping is allowed.

[0062] Edge chipping: Edge chipping refers to the phenomenon that cracks or breaks appear on the edge surface of a part due to defects in the tool or polishing disc during the processing. For this product, edge chipping mainly occurs on the 90° edge.

[0063] Surface shape: PV (Peak to valley), also called peak to valley value, is a common indicator of optical surface shape quality. It refers to the height difference between the highest point and the lowest point within the sampling range (based on 2D contour lines or 3D data maps) after removing the reference plane. The PV value is in physical length units, and its meaning is easy to understand. Based on the required reference plane, the maximum deviation range of all pixels directly reflects the processing quality of the current optical surface. According to the experience of long-term optical testing in the past, the PV value and another important surface shape indicator RMS often maintain a certain proportional relationship, generally around 2:1.

[0064] Matching tray: An auxiliary tool designed to meet the needs of product processing. There are mainly two types of matching trays in the processing of this type of products. One is a small matching tray, which is glued to the end face to protect the edges of the end face. The other is a long matching tray, which is glued to the long side face to protect the edges of the long side face.

[0065] Surface defects: pitting, scratches, broken edges and bubbles on the surface of optical products.

[0066] For the above-mentioned optical rod products, the biggest difficulty in the processing process is to control the edge collapse. In the prior art, the four long sides are first processed to the finished product size, and then the coated end face is processed. In the process, the coated end face needs to be processed by a matching plate. Since the long sides have been processed to form the finished side, the optical glue matching plate on it has strict surface shape, smoothness, and parallelism requirements. Processing a suitable matching plate is usually more difficult than processing the optical rod itself. In addition, the optical glue matching plate requires the parts and the matching plate to match the surface shape. If the optical glue is not tight, it is easy to fall off during the processing. If the optical glue is too tight, it will be time-consuming and laborious to remove the strips. In addition, when processing the perpendicularity between the coated end face and the side face, the existing process needs to process the optical glue on the matching plate, which will introduce the error of the matching plate parallelism, resulting in inaccurate control and judgment of the perpendicularity between the end face and the side face during the process. Therefore, it is necessary to protect the surface that has been processed during the processing, and the protection method is also the key to whether the quality can be guaranteed. The commonly used protection method considers three aspects: 1. The ability to control the edge collapse; 2. The difficulty and efficiency of disassembly in the later stage; 3. Cost control. For this step, the methods currently used are: optical adhesive tray and UV adhesive tray. Combined with the three factors that need to be considered above, optical adhesive tray is expensive, difficult to operate, and not easy to disassemble quickly; UV adhesive tray is not easy to disassemble and the control of edge collapse is not ideal. Therefore, the specific embodiments of this application are as follows:

[0067] This embodiment proposes a processing method for a light guide rod product, which is used for optical processing of the light guide rod, so that the processed light guide rod can stably meet the product requirements: the surface shape of the two end faces reaches 1λ, the surface shape of the four side faces reaches 20λ (the surface shape detection is all laser detection at 633nm), the angle of all adjacent surfaces is 90° with an accuracy of 1 minute, the finish of the two end faces is B=40-20, the finish of the four side faces is B=80-50, and all edges are not allowed to be chamfered or chipped. Please refer to Figure 1 The processing method of the optical guide rod product mainly includes the following steps:

[0068] Step S100: providing a blank, and processing adjacent first side surfaces and second side surfaces.

[0069] See also Figure 6 In the specific process, the blank 100 matches the outer contour of the final light guide rod product, so the blank 100 is a hexahedron, which can be a cuboid or a cube. The blank 100 of this embodiment is a cuboid, having: a first side surface 110 and a third side surface 130 set opposite to each other, a second side surface 120 and a fourth side surface 140 set opposite to each other, and two end surfaces 150 set opposite to each other. These surfaces are initial surface shapes in the blank stage. Since the parts produced in the subsequent processing process are all produced on the basis of the blank, the structures of the various surfaces on the parts are described with reference to the various surfaces of the blank.

[0070] See also Figure 6 Compared with the finished light guide rod, each surface of the blank 100 has a blank margin of a predetermined thickness. Due to the coating clamping requirements, the processing margin of each surface needs to be at least 2 mm. This ensures that there is enough margin to process the first side surface 110, the second side surface 120, the third side surface 130 and the fourth side surface 140 after coating.

[0071] The adjacent first side surface 110 and second side surface 120 of the blank 100 are polished, mainly to make the right angle between the first side surface 110 and the second side surface 120 after polishing meet the predetermined angle requirement, and the surface shape after polishing meets the predetermined light glue requirement. Since light glue fixation is required in the subsequent processing process, one long side surface and the adjacent long side surface are polished first to ensure that the surface shape and the 90° angle between the two meet the requirements (the angle accuracy is within 1 minute). Under the condition of ensuring the angle, the first side surface 110 and the second side surface 120 can be used as the reference for processing the subsequent surfaces. In this way, the processing reference is unified, especially after the basic angle between the first side surface 110 and the second side surface 120 is made, the end surface 150 to be coated can be directly light glued to the tooling to process, eliminating the influence of the matching plate quality on the parts.

[0072] Step S200: Using the first side surface and the second side surface as reference, the blank is mounted on a tool, and two end surfaces of the blank are processed on a plate to obtain finished end surfaces.

[0073] See also Figure 6 , Figure 7 In the specific process, since the basic angle between the first side surface 110 and the second side surface 120 is guaranteed by the above-mentioned polishing process, one of the side surfaces is fixed with light glue, and the two end surfaces 150 of the blank 100 are processed into a disk, and directly processed into a finished end surface. Compared with the end surface processed last in the prior art, since the side surfaces are not processed in place, it is not necessary to use a high-quality matching disk and the side surfaces for light glue. The end surfaces 150 on both sides are directly processed to form the finished end surface, eliminating the influence of the matching disk quality on the parts.

[0074] See also Figure 7, the tooling can use a polishing table 500, and with the polished first side 110 as the reference, the polished second side 120 is polished onto the polishing table 500. Polish the polishing table 500 onto the polishing disk, and process the two end faces of the blank into a disk. The first side 110 and the second side 120 are two adjacent sides, one of which is used as the alignment clamping reference, and the other side is used as the fixed surface to be fixed with the polishing table 500 by polishing. The polishing table 500 can be made of square bricks. The blank 100 can be supported by the square bricks, so that the end faces 150 at both ends of the blank 100 are respectively in the processing position for easy processing. During the polishing process, the installation angle of the first side 110 is detected and adjusted to ensure that the blank 100 reaches the predetermined alignment state. Specifically: when the second side 120 is fixed to the square brick by polishing, the angle of the first side 110 is observed by a comparator. If the angle exceeds the predetermined range, it is adjusted to ensure that the blank 100 is aligned. The blank 100 is fixed on a large plate (optical plate) of a processing device through a photoresist table 500. The two end faces 150 of the blank 100 are processed into a plate, and the end faces 150 are directly processed to the right size to form finished end faces at both ends.

[0075] See also Figure 1 , Figure 2 The specific process of processing the two end faces of the blank in step S200 may be:

[0076] Step S210, rough grinding the two end faces of the blank respectively.

[0077] Step S220 , respectively fine-grind the two end faces after rough grinding to remove a predetermined first fine-machining allowance.

[0078] Step S230, polishing the two end faces after fine grinding respectively to remove a predetermined first polishing margin, wherein the finish and surface shape of the finished end faces obtained after polishing meet predetermined quality requirements.

[0079] During the above steps S210 to S230, the grinding tool is used for step-by-step processing. First, coarse sand is used for rough grinding. During the rough grinding process, more blanks are removed and the processing speed is fast. Then fine sand is used for fine grinding. The first fine grinding allowance removed by the fine sand can be 0.1mm. The processing allowance during the fine grinding process is small, which effectively reduces the processing deformation and ensures the processing size. Finally, the first polishing allowance removed by polishing can be 0.02mm, so that the obtained finished end face can effectively meet the requirements of smoothness and surface shape (smoothness B=40-20, surface shape reaches 1λ).

[0080] See also Figure 1 , step S300, coating the two finished end faces to form coated finished end faces.

[0081] When the two end faces are processed in place, the corresponding film layer is plated on the finished end face to form a coated finished end face to meet the coating requirements of the product.

[0082] See also Figure 1 Step S400: bonding an end face protection member to the end face of the coated finished product, processing the opposite third side face to obtain a third finished product side face, and processing the first side face to obtain a first finished product side face.

[0083] After coating is completed, the end faces of the coated products at both ends need to be protected with discs. You can use adhesive to bond the protective discs. On the one hand, it is to protect the end faces of the coated products, and on the other hand, it is to protect the edges from chipping in subsequent processing.

[0084] See also Figure 1 , Figure 3 Therefore, step S400 specifically includes:

[0085] Step S410, bonding end face protection components to the end faces of the finished coating products at both ends by using ultraviolet glue, so that the end face protection components completely cover the end faces of the finished coating products.

[0086] Since the surface of the coated finished product end faces at both ends is a coating layer, in order to avoid damage to the coating layer, it can only be protected by gluing, and considering the firmness and difficulty of later disassembly, UV glue is the most suitable glue. For example, NOA65 glue can be used.

[0087] See also Figure 6 , Figure 8 , UV glue is used to bond the end face protection parts 300 to the end faces 200 of the finished coated products at both ends. The thickness of the bonding layer and the bonding angle of the end face protection part 300 are controlled to meet the predetermined requirements. By controlling the thickness of the bonding layer and the bonding angle of the end face protection part 300, the finished coated product end faces 200 can be protected from being damaged during the processing. When processing the four side faces, the end face protection part 300 participates in the processing of the side faces to ensure that no edge collapse occurs when the parts are not chamfered. The end face protection part 300 of this embodiment is a glass matching plate, and ordinary glass matching plates can meet the use requirements. However, in the prior art, quartz matching plates are usually required for light bonding. Therefore, ordinary glass matching plates are usually bonded instead of light-bonded quartz matching plates, which eliminates the requirements for matching plate materials, smoothness, and surface shape, and reduces material costs.

[0088] In addition, the prior art uses a method of light glue matching tray, which requires the parts and the matching tray to match the surface shape. If the light glue is not tight, it is easy to fall off during processing. If the light glue is fixed too tightly, it will take time and effort to remove the strips. However, the bonded glass matching tray in this embodiment is easy to remove, and the overall processing efficiency and turnover efficiency are improved.

[0089] Then, the polished first side is laminated to the laminate disc, the opposite third side is processed to obtain the third finished side, the third finished side is laminated to the laminate disc, and the first side is processed to obtain the first finished side. The specific process is as follows:

[0090] Step S420, taking the first side surface as a reference, processing the third side surface by applying a photoresist, removing the chamfers and broken edges between the third side surface and the coated finished end surfaces at both ends, and obtaining the third finished side surface.

[0091] See also Figure 3 , Figure 4 In the specific process, the first side is used as a reference and the plate is placed on the plate through the optical glue. The processing process of the third side specifically includes the following steps:

[0092] Step S421, rough sand grinding the third side surface;

[0093] Step S422, fine grinding the third side surface after rough grinding to remove a predetermined second fine machining allowance;

[0094] Step S423, polishing the third side surface after fine grinding, removing the predetermined second polishing allowance, and obtaining a third finished product side surface.

[0095] In the process of the above steps S421 to S423, the first side surface processed is used as a reference, and after the optical resin is applied, the grinding tool is used for step-by-step processing. First, coarse sand is used for rough grinding to remove excess size, and the processing speed is fast. Then fine sand is used for fine grinding. The second fine grinding allowance removed by fine sand can be 0.1mm. The processing allowance during fine grinding is small, which effectively reduces processing deformation and ensures the processing size. Finally, the second polishing allowance removed by polishing can be 0.02mm, and the third finished side surface is obtained. The processing of the third side surface is completed to meet the processing requirements of the finished surface.

[0096] Step S430, taking the third finished product side as a reference, processing the first side by applying a photoresist, removing the chamfers and broken edges between the first side and the coated finished end faces at both ends, and obtaining the first finished product side.

[0097] See also Figure 3 , Figure 4 In the specific process, the third finished product side is used as the reference and the plate is mounted through the optical glue. The processing process of the first side specifically includes the following steps:

[0098] Step S431, rough sand grinding the first side surface.

[0099] Step S432: fine-grind the first side surface after rough grinding to remove a predetermined second fine-machining allowance.

[0100] Step S433, polishing the first side surface after fine grinding, removing the predetermined second polishing allowance, and obtaining a first finished product side surface.

[0101] During the above steps S431 to S433, the processed third finished product side is used as a reference. After the light glue is applied, the grinding tool is used for step-by-step processing. First, coarse sand is used for rough grinding to remove excess size, and the processing speed is fast. Then fine sand is used for fine grinding. The second fine grinding allowance removed by fine sand can be 0.1mm. The processing allowance during fine grinding is small, which effectively reduces processing deformation and ensures the processing size. Finally, the second polishing allowance removed by polishing can be 0.02mm, and the first finished product side is obtained. The processing of the first side is completed to achieve the processing requirements of the finished surface.

[0102] See also Figure 6 , Figure 8 , fix the first side 110 with optical glue, process the third side 130 into a disk, process the third side 130 to a predetermined thickness, and remove the chamfers and broken edges between the third side 130 and the coated finished end faces 200 at both ends. Fix the processed third side 130 with optical glue, process the first side 110 into a disk, process the first side 110 to a predetermined thickness, and remove the chamfers and broken edges between the first side 110 and the coated finished end faces 200 at both ends. Since there is sufficient processing allowance on both the first side 110 and the third side 130, the above-mentioned chamfers and broken edges can be completely removed after the part is processed into the finished size in this direction. The purpose of this processing is to remove the broken edges between the coated finished end faces at both ends and the third finished side faces, and the broken edges between the coated finished end faces at both ends and the first finished side faces.

[0103] See also Figure 1 Step S500: Use wax to bond side protection pieces to the third finished product side and the first finished product side, process the opposite fourth side to obtain a fourth finished product side, and process the second side to obtain a second finished product side.

[0104] See also Figure 6 , Fig. 9 In the specific process, the side protection parts 400 are respectively bonded to the processed third finished product side 220 and the first finished product side 210 on both sides by molten wax. The side protection parts 400 are glass matching trays. They can protect the processed first finished product side 210 and the third finished product side 220 from being damaged during the subsequent processing. When processing the other two sides, the side protection parts 400 ensure that there is no edge collapse when the parts are not chamfered. In addition, the bonded glass matching trays are easy to remove, and the overall processing efficiency and turnover efficiency are improved. In addition, the end face protection parts and the side protection parts are mainly used as matching trays for protection, so the thickness of the matching trays can be relatively thin.

[0105] See also Figure 3 , Figure 5 Therefore, step S500 specifically includes:

[0106] Step S510: bonding the side protection members to the side of the third finished product and the side of the first finished product respectively by using molten wax, and solidifying the molten wax to obtain solid wax so that the side protection members completely cover the side of the third finished product and the side of the first finished product.

[0107] In order to ensure that the long edges do not break during the subsequent processing, it is necessary to bond matching plates on the third finished product side 220 and the first finished product side 210. This time, the matching plates are bonded by molten wax bonding, and it is required that there are no bubbles or impurities in the bonding surface to ensure that no gaps are generated during the sanding and sizing process, resulting in the matching plate failing to play a complete protective role.

[0108] Step S520, taking the second side as a reference, processing the fourth side through the optical resin upper plate, removing the chamfers and broken edges between the fourth side and the coated finished end faces at both ends, and removing the chamfers and broken edges between the fourth side and the first finished side and the third finished side, respectively, to obtain a fourth finished side.

[0109] See also Figure 3 , Figure 5 In the specific process, the second side is used as a reference and the plate is placed on the plate through the optical glue. The processing process of the fourth side specifically includes the following steps:

[0110] Step S521, rough sand grinding the fourth side surface;

[0111] Step S522, fine grinding the fourth side surface after rough grinding to remove the predetermined third fine machining allowance;

[0112] Step S523, polishing the fourth side surface after fine grinding to remove the predetermined third polishing allowance to obtain a fourth finished product side surface.

[0113] In the process of the above steps S521 to S523, the processed second side surface is used as a reference, and after the optical resin is applied, the grinding tool is used for step-by-step processing. First, coarse sand is used for rough grinding to remove excess size, and the processing speed is fast. Then fine sand is used for fine grinding. The third fine processing allowance removed by fine sand can be 0.15mm. The processing allowance during fine grinding is small, which effectively reduces processing deformation and ensures processing size. Finally, the second polishing allowance removed by polishing can be 0.05mm, and the fourth finished product side surface is obtained. The processing of the fourth side surface is completed to meet the processing requirements of the finished surface.

[0114] Step S530, taking the fourth finished product side as a reference, processing the second side through the optical glue upper plate, removing the chamfers and broken edges between the second side and the coated finished end faces at both ends, and removing the chamfers and broken edges between the second side and the first finished product side and the third finished product side, respectively, to obtain the second finished product side.

[0115] See also Figure 3 , Figure 5 In the specific process, the fourth finished product side after processing is used as the reference, and the plate is mounted through the optical glue. The processing process of the second side specifically includes the following steps:

[0116] Step S531, rough sand grinding the second side surface.

[0117] Step S532: fine-grind the second side surface after rough grinding to remove a predetermined third fine machining allowance.

[0118] Step S533, polishing the second side surface after fine grinding, removing the predetermined third polishing allowance, and obtaining a second finished product side surface.

[0119] During the above steps S531 to S533, the processed fourth finished product side is used as a reference. After the optical glue is applied, the grinding tool is used for step-by-step processing. First, coarse sand is used for rough grinding to remove excess size, and the processing speed is fast. Then fine sand is used for fine grinding. The third fine processing allowance removed by fine sand can be 0.15mm. The processing allowance during fine grinding is small, which effectively reduces processing deformation and ensures processing size. Finally, the second polishing allowance removed by polishing can be 0.05mm, and the second finished product side is obtained. The processing of the second side is completed to meet the processing requirements of the finished surface. Thus, the processing of all surfaces is completed.

[0120] See also Figure 6 , Fig. 9 Therefore, the second side surface 120 is fixed with optical glue, the fourth side surface 140 is processed into a disk, a predetermined thickness is processed on the fourth side surface 140, the chamfers and broken edges between the fourth side surface 140 and the finished coated end surfaces 200 at both ends are removed, and the chamfers and broken edges between the fourth side surface 140 and the first finished side surface 210 and the third finished side surface 220 are removed. Then the processed fourth side surface 140 is fixed with optical glue, the second side surface 120 is processed into a disk, a predetermined thickness is processed on the second side surface 120, the chamfers and broken edges between the second side surface 120 and the finished coated end surfaces 200 at both ends are removed, and the chamfers and broken edges between the second side surface 120 and the first finished side surface 210 and the third finished side surface 220 are removed. Similarly, since sufficient processing allowances are left on both the second side surface 120 and the fourth side surface 140, the above-mentioned chamfers and broken edges can be completely removed after the part is processed into the finished size in this direction.

[0121] After the wax bonding is completed in step S500, during the processing of the fourth surface and the second surface, smaller edge collapse may still occur during the sanding process. Therefore, in this step, the processing size is modified so that the third finishing allowance is larger than the second finishing reserve, and the third polishing allowance is larger than the second polishing allowance. Specifically, when using wax for bonding, after most of the coarse sand is removed, the fine sand removal size (third finishing allowance) is set to 0.15mm, and the polishing removal size (third polishing allowance) is set to 0.05mm, which can ensure that there is no edge collapse on each edge. The details are as follows:

[0122] By using the optical adhesive plate or the UV adhesive plate, the fine sand is 0.08-0.1mm (the second finishing allowance) and the polishing is 0.02mm (the second polishing allowance). However, through testing, it can be found that there will be very fine edge collapse after fine sand frosting, and the size varies from 0.02mm to 0.04mm. Therefore, if the size of the second polishing allowance = 0.02mm is removed by polishing, the edge collapse after frosting will not be removed, and the edge collapse will still exist. In order to eliminate this problem, by adding the third finishing allowance, the damage layer of the coarse sand can be removed, and then the third polishing allowance is added, and then the damage layer of the fine sand is removed, ensuring that there is no edge collapse in the final product.

[0123] After that, disassemble the disk, see Figure 3 , as follows:

[0124] Step 600 : Melting the solid wax by heating to remove the side protection members on the side of the third finished product and the side of the first finished product.

[0125] Step 610: Inactivate the UV adhesive by heating to remove the end face protection components bonded to the end faces of the finished coated products at both ends.

[0126] After all the surfaces are processed, the matching plate needs to be removed. The first step is to remove the matching plates bonded by wax on the sides of the first and third finished products. Since they are bonded by wax, you only need to put the parts on the stove to heat and melt the wax to remove the matching plates. Then remove the matching plates on the end faces of the coated finished products at both ends. Since the bonding method is UV glue, the UV glue can be ineffective and removed by heating with a hot air gun. The method of removing the matching plates is selected according to the bonding method of the protective glass. The matching plates bonded by wax can be removed by direct heating without causing secondary damage to the product or causing edge collapse. In this way, the glue can be quickly removed and the processing of cylindrical parts can be completed to meet the optical index requirements of the product.

[0127] In summary, the processing method of a light guide rod product provided by the present application can directly glue the end face to be coated on the tooling after ensuring the verticality between the two adjacent side faces. During the processing of the end face, the side face does not need to be protected by the matching plate, thereby eliminating the influence of the matching plate quality on the part. After coating, the processed surface is protected by bonding the matching plate, and the part can be directly processed on the reference surface of the glue. Since the blank surplus is large, the smaller chipped edges on the part can be processed, which improves the material utilization rate and reduces the risk of product scrap. First, two adjacent side faces are roughly processed, and then the two end faces are processed based on this reference. After coating, the matching plate is bonded and the shape is processed. This not only greatly reduces the problem of chipping and scrapping during coating, but also reduces the requirements for the matching plate, saves processing costs and improves processing efficiency, so that the mass production of light guide rod products can be realized. This time, a special wax bonding method is used to bond the matching plate. First of all, there is no special requirement for the matching plate and it is easy to process. Secondly, due to the characteristics of the wax itself, the matching plate can be bonded to the part by heating, and the sizes of frosting and polishing are modified to ensure that no edge chipping occurs during the processing. When the matching plate is finally removed, the wax can be melted and the matching plate can be removed by heating it again.

[0128] 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 a light guide rod product, characterized in that: Includes steps: Providing a blank, and processing adjacent first side surface and second side surface; Taking the first side surface and the second side surface as reference, the blank is mounted on a tool, and two end surfaces of the blank are processed on a plate to obtain finished end surfaces respectively; Performing coating on the two finished end faces to form coated finished end faces; Bonding an end face protection member to the end face of the finished coating product, processing an opposite third side face to obtain a third finished product side face, and processing the first side face to obtain a first finished product side face; Wax is used to bond side protection pieces to the third finished side and the first finished side, respectively, the opposite fourth side is processed to obtain a fourth finished side, and the second side is processed to obtain a second finished side.

2. The method for processing a light guide rod product according to claim 1, characterized in that: In the step of installing the blank onto a tooling with the first side surface and the second side surface as references, and processing the two end surfaces of the blank onto a plate to obtain finished end surfaces respectively: Roughly grinding the two end surfaces of the blank respectively; respectively performing fine grinding on the two end faces after rough grinding to remove a predetermined first fine machining allowance; The two end faces after fine grinding are polished respectively to remove a predetermined first polishing margin, wherein the finish and surface shape of the finished end faces obtained after polishing meet predetermined quality requirements.

3. The method for processing a light guide rod product according to claim 1, characterized in that: The steps of bonding end face protection parts to the coated finished end faces at both ends, processing the opposite third side faces to obtain the third finished side faces, and processing the first side faces to obtain the first finished side faces include: Adhere end face protection parts to the end faces of the finished coating products at both ends by using ultraviolet glue, so that the end face protection parts completely cover the end faces of the finished coating products; Taking the first side surface as a reference, processing the third side surface by applying a photoresist, removing the chamfers and broken edges between the third side surface and the coating finished end surfaces at both ends, and obtaining a third finished side surface; Taking the third finished product side surface as a reference, the first side surface is processed by applying a photoresist, and the chamfers and broken edges between the first side surface and the coated finished product end surfaces at both ends are removed to obtain the first finished product side surface.

4. The method for processing a light guide rod product according to claim 3, characterized in that: The step of processing the third side surface by using a photoresist upper plate based on the first side surface comprises: performing coarse sand grinding on the third side surface; Fine grinding is performed on the third side surface after rough grinding to remove the predetermined second fine machining allowance; The third side surface after fine grinding is polished to remove the predetermined second polishing allowance to obtain a third finished product side surface.

5. The method for processing a light guide rod product according to claim 3, characterized in that: The step of processing the first side surface by using a photoresist upper plate with the processed third side surface as a reference comprises: performing rough sand grinding on the first side surface; Fine grinding is performed on the first side surface after rough grinding to remove a predetermined second fine machining allowance; The first side surface after fine grinding is polished to remove a predetermined second polishing allowance to obtain a first finished product side surface.

6. The method for processing a light guide rod product according to claim 5, characterized in that: In the steps of bonding the side protection piece with wax on the third finished side and the first finished side, processing the opposite fourth side to obtain the fourth finished side, and processing the second side to obtain the second finished side: Adhere the side protection members to the side of the third finished product and the side of the first finished product respectively by using molten wax, and solid wax is obtained after the molten wax is solidified so that the side protection members completely cover the side of the third finished product and the side of the first finished product; Taking the second side surface as a reference, processing the fourth side surface through the optical resin upper plate, removing the chamfers and broken edges between the fourth side surface and the coated finished end surfaces at both ends, and removing the chamfers and broken edges between the fourth side surface and the first finished side surface and the third finished side surface, respectively, to obtain a fourth finished side surface; Taking the fourth finished product side as a reference, the second side is processed by applying a photoresist, the chamfers and chipped edges between the second side and the coated finished end faces at both ends are removed, and the chamfers and chipped edges between the second side and the first finished product side and the third finished product side are removed respectively, to obtain the second finished product side.

7. The method for processing a light guide rod product according to claim 6, characterized in that: In the step of processing the fourth side surface by using the optical resin upper plate based on the second side surface, removing the chamfers and broken edges between the fourth side surface and the coated finished end surfaces at both ends, and removing the chamfers and broken edges between the fourth side surface and the first finished side surface and the third finished side surface respectively, to obtain the fourth finished side surface: performing coarse sand grinding on the fourth side surface; Fine grinding is performed on the fourth side surface after rough grinding to remove the predetermined third fine machining allowance; The fourth side surface after fine grinding is polished to remove the predetermined third polishing allowance to obtain a fourth finished product side surface.

8. The method for processing a light guide rod product according to claim 6, characterized in that: In the step of obtaining the second finished product side surface by processing the second side surface through the optical resin upper plate with the fourth finished product side surface as a reference, removing the chamfers and broken edges between the second side surface and the coated finished product end surfaces at both ends, and removing the chamfers and broken edges between the second side surface and the first finished product side surface and the third finished product side surface respectively: performing rough sand grinding on the second side surface; Fine grinding is performed on the second side surface after rough grinding to remove a predetermined third fine machining allowance; The second side surface after fine grinding is polished to remove a predetermined third polishing allowance to obtain a second finished product side surface.

9. The method for processing a light guide rod product according to claim 8, characterized in that: The third finishing allowance is greater than the second finishing reserve, and the third polishing allowance is greater than the second polishing allowance.

10. The method for processing a light guide rod product according to any one of claims 1 to 9, characterized in that: After the steps of bonding the side protection piece with wax on the third finished side and the first finished side, processing the opposite fourth side to obtain the fourth finished side, and processing the second side to obtain the second finished side, the step further includes: Melting the solid wax by heating to remove the side protection members on the third finished side and the first finished side; The ultraviolet glue is rendered ineffective by heating, so that the end face protection parts bonded to the end faces of the finished coating products at both ends can be removed.

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