Large-size optical glass high-precision wedge angle grinding device

Abstract

The invention relates to the technical field of optical part machining, and particularly provides a large-size optical glass high-precision wedge angle grinding device. Comprising a grinding table; a plurality of glass clamps; the glass clamp comprises a hinged support frame, a cylinder is horizontally and rotatably mounted in the hinged support frame, and an adsorption part is slidably mounted at the bottom of the cylinder along the interior of the cylinder; a fixing clamp is assembled at the top end of the cylinder, and a linkage piece is connected between the fixing clamp and the hinged support frame. The depth adjusting part is assembled and connected among the adsorption parts of the plurality of glass clamps; the wedge angle adjusting part is used for driving the plurality of glass clamps to rotate synchronously; and a grinding mechanism. A liquid collecting system is arranged on the grinding table; the device provides a plurality of grinding stations, and a plurality of pieces of optical glass can be adjusted to be in a synchronous grinding state so as to facilitate batch synchronous grinding, so that the grinding efficiency is improved, and the difference of the grinding degrees of different pieces of optical glass is reduced; in addition, the isolation between the glass clamp and the grinding liquid is realized, and the use continuity and the clamping and positioning precision of the clamp are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of optical component processing, and specifically provides a high-precision wedge angle grinding device for large-size optical glass. Background Art

[0002] Optical glass, as the name implies, refers to optical lenses made of glass. According to different functions and requirements, it can be divided into several categories; among them, the wedge angle prism is a special optical lens, and generally one end is processed with a top angle with a certain inclined wedge angle, which is called the wedge angle and is often used in beam control applications, such as adjusting or deflecting the direction of the beam. According to the shape, the wedge angle prism can be divided into a cylindrical or polyhedral three-dimensional structure.

[0003] In the processing of wedge angle prisms, generally multiple processing steps such as material selection, chamfering, rough grinding, fine grinding, polishing, and quality inspection are experienced. Among them, rough grinding and fine grinding together constitute the grinding process. Grinding is an important step to ensure the surface flatness and accuracy of optical glass, and generally a special grinding device is used for processing; for large-size wedge angle prisms, existing equipment usually only grinds and processes single lens workpieces, which greatly affects the overall grinding efficiency, and grinding each one by one also increases the difference in the grinding degree between each optical lens. In addition, during the grinding process, grinding fluid is sprayed synchronously, and there are many particles in the grinding fluid. Optical lenses usually need to be fixed in corresponding jigs, and existing grinding equipment usually does not isolate well between the jig and the grinding fluid, resulting in on the one hand, it is not convenient to fully and quickly recover the grinding fluid, and on the other hand, it causes pollution of the jig area by the grinding fluid, thus affecting the clamping and positioning state and accuracy of the optical glass, and frequent manual cleaning and maintenance are required. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a high-precision wedge angle grinding device for large-size optical glass to solve the problems mentioned in the above background art.

[0005] To achieve the above object, the present invention adopts the following technical solutions: A high-precision wedge angle grinding device for large-sized optical glass, comprising: a grinding table; a plurality of glass fixtures fixedly arranged along a straight line on the grinding table; the glass fixture includes a hinge seat frame fixed on the grinding table, and a cylinder for placing cylindrical optical glass is horizontally rotatably installed in the hinge seat frame, and a flexible sealing contact is formed between the outer wall of the cylinder and the hinge seat frame; a suction member for negatively adsorbing the bottom end of the optical glass is slidably installed along the inside of the bottom of the cylinder; a fixing clamp is assembled at the top of the cylinder, and a linkage member is connected between the fixing clamp and the hinge seat frame; a depth adjusting member is assembled and connected between the suction members of a plurality of glass fixtures for synchronously adjusting the positions of the plurality of suction members in the cylinder corresponding to the thickness of the optical glass; a wedge angle adjusting member is assembled on the grinding table for driving the plurality of glass fixtures to rotate synchronously, for adjusting the wedge angle surface of the optical glass fixed in the glass fixture to a horizontal state, and when the glass fixture rotates, the linkage member drives the fixing clamp to clamp and fix the side wall of the optical glass in a sealed manner; and a grinding mechanism is assembled on the grinding table for synchronously grinding the wedge angle surfaces of the optical glass in the plurality of glass fixtures; a liquid collecting system for filtering and recycling the grinding liquid is arranged on the grinding table.

[0006] Preferably, a processing window is opened on the tabletop of the grinding table, and a fixture seat is arranged on the grinding table in the processing window; a plurality of glass fixtures are installed in the fixture seat in a penetrating and embedded manner.

[0007] Preferably, the hinge seat frame includes a hinge seat plate and a flexible ring both in a ring structure. An annular groove is opened on the outer peripheral surface of the flexible ring, and the hinge seat plate is embedded and installed in the annular groove, and the hinge seat plate is fixed on the fixture seat; rotation pins are horizontally and oppositely fixed on the outer wall of the cylinder, the rotation pins pass through the flexible ring and are rotatably installed on the hinge seat plate, and the flexible ring is sleeved and sealed on the cylinder.

[0008] Preferably, the fixing clamp includes two semi-circular clamps and a sealing ring for making a sealing contact with the outer side wall of the optical glass. The two semi-circular clamps are oppositely distributed on both sides of the rotation pin and are both embedded and fixed on the inner side wall of the sealing ring; the sealing ring is fixed at the top of the cylinder; the linkage member is connected between two adjacent end positions of the two semi-circular clamps.

[0009] Preferably, the linkage member includes two connecting shafts respectively and fixedly arranged at two adjacent end positions of the two semi-circular clamps. The other ends of the two connecting shafts are respectively hinged with a connecting rod, the other ends of the two connecting rods are jointly hinged with a sliding sleeve, a sliding plate is slidably fitted in the sliding sleeve, the sliding plate is fixed on the rotation pin at an adjacent position, and an elastic connection is formed between the outer wall of the sliding sleeve and the hinge seat plate.

[0010] Preferably, the suction member includes a suction part slidably fitted in the cylinder and an air pipe communicated with the suction part; the depth adjusting member and the wedge angle adjusting member are both connected between a plurality of air pipes.

[0011] Preferably, the wedge angle adjustment member comprises a travel plate horizontally movably mounted at the bottom of the grinding table, a plurality of air pipes are slidably sleeved with pipe sleeves, and the plurality of pipe sleeves are hinged to the travel plate.

[0012] Preferably, the depth adjusting member comprises a connecting plate fixed in series between a plurality of air pipes and a driving assembly driving the connecting plate to move axially along the cylinder, and the driving assembly is assembled at the bottom end of one of the cylinders.

[0013] Preferably, the liquid collection system includes a filter plate and a liquid collection tank. The filter plate is detachably installed, and the filter plate is overlapped on the upper end surface of the clamp seat avoiding multiple glass clamps and overlapped on the upper end edge of the processing window; the liquid collection tank is fixed on the lower end surface of the clamp seat and the lower end edge of the processing window.

[0014] Preferably, a plurality of shrinkage slits are circumferentially distributed on the inner circumference of the flexible ring; and two relatively arranged deformation slits are provided on the outer circumference of the sealing ring, and the two deformation slits are distributed one-to-one and adjacent to two groups of adjacent port positions of the two semicircular clamps, and the deformation slit is located between two adjacent ports in the same group.

[0015] The above technical scheme has the following advantages or beneficial effects: the present invention provides a large-size optical glass high-precision wedge angle grinding device, which is provided with a plurality of glass fixtures which are arranged in a straight line and can clamp and fix the optical glass respectively, and provides a plurality of synchronous grinding processing stations, and a depth adjustment member and a wedge angle adjustment member are commonly connected to the plurality of glass fixtures, and the depth adjustment member can be used to synchronously adjust the reasonable placement depth of the plurality of optical glasses in the glass fixture, and the wedge angle adjustment member can be used to rotate and adjust the plurality of glass fixtures so that the wedge angle surface of the optical glass is adjusted to a horizontal state, so that the plurality of optical glasses can be adjusted to a synchronous grinding state, so as to facilitate batch synchronous grinding, so as to improve the grinding processing efficiency and reduce the difference in the grinding processing degree between different optical glasses; in addition, the glass fixture is isolated from the grinding liquid through the contact seal between the hinge frame and the cylinder and the contact seal between the fixed clamp and the optical glass in the glass fixture, and the grinding liquid can be guided to flow quickly to the collection area for rapid and sufficient recovery, and the grinding liquid is also avoided as much as possible from contaminating the clamping working area of ​​the glass fixture, which can greatly reduce the cleaning frequency of the glass fixture and ensure the continuity of the fixture use and the clamping positioning accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention and its features, configurations and advantages will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts throughout the drawings, which are not drawn to scale, with emphasis on illustrating the subject matter of the present invention.

[0017] Figure 1It is a schematic three-dimensional structure diagram of a high-precision wedge angle grinding device for large-sized optical glass provided by the present invention.

[0018] Figure 2 It is a front view of a high-precision wedge angle grinding device for large-sized optical glass provided by the present invention.

[0019] Figure 3 It is a schematic three-dimensional structure diagram of the grinding table when the filter plate and the liquid collecting tank are not assembled.

[0020] Figure 4 It is a schematic three-dimensional structure diagram of the liquid collecting tank.

[0021] Figure 5 It is a schematic three-dimensional structure diagram of the assembly between multiple glass jigs assembled on the jig seat and the depth adjusting member.

[0022] Figure 6 It is a schematic three-dimensional structure diagram of the assembly between multiple glass jigs assembled on the jig seat and the wedge angle adjusting member.

[0023] Figure 7 It is a schematic three-dimensional sectional view of the glass jig.

[0024] Figure 8 It is a schematic three-dimensional sectional view of the cylinder assembled on the hinge seat frame.

[0025] Figure 9 It is a schematic three-dimensional structure diagram of the hinge seat plate.

[0026] Figure 10 It is a schematic three-dimensional structure diagram of the flexible ring.

[0027] Figure 11 It is a schematic three-dimensional sectional view of the adsorbing member.

[0028] Figure 12 It is a schematic three-dimensional structure diagram of the sealing ring.

[0029] Figure 13 It is a schematic three-dimensional structure diagram of the semi-circular clamp.

[0030] Figure 14 It is a schematic three-dimensional diagram of the optical glass.

[0031] In the figure: 1. Grinding table; 11. Processing window; 12. Support base; 13. Fixture base; 14. Filter screen plate; 15. Liquid collecting tank; 16. Enclosure cover; 2. Glass fixture; 21. Hinge seat frame; 211. Hinge seat plate; 212. Flexible ring; 213. Shrinkage joint; 22. Cylinder; 221. Rotating pin; 222. Step port; 223. Positioning key; 23. Sucking attachment; 231. Air pipe; 232. Air chamber cylinder; 233. Air hole cover; 24. Fixed clamp; 241. Sealing ring; 242. Card slot; 243. Deformation joint; 244. Semi-circular clamp; 25. Linkage member; 251. Connecting shaft; 252. Link rod; 253. Sliding sleeve; 254. Slide plate; 255. Spring piece; 3. Depth adjusting member; 31. Series connection plate; 32. Rotating support; 33. Lead screw; 4. Wedge angle adjusting member; 41. Stroke plate; 411. Guide rod; 42. Push-pull cylinder; 43. Pipe sleeve; 5. Grinding mechanism; 51. Lifting frame; 511. Support frame; 512. Guide post; 513. Lifting machine seat; 52. Grinder; 6. Optical glass. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] In order to enable those skilled in the art to better understand the solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] As Figure 1 、 Figure 2 and Figure 3 shown, a high-precision wedge angle grinding device for large-sized optical glass is used to grind and process a type of wedge angle optical glass 6 in the shape of a cylinder as shown in Figure 14 . The radii of this type of optical glass 6 are the same, but the overall thickness and the angle of the wedge angle can be different; the grinding device includes a grinding table 1; a rectangular processing window 11 is opened on the grinding table 1, and a support base 12 extending to the area where the processing window 11 is located is horizontally welded at the bottom of the grinding table 1. A fixture base 13 is horizontally welded on the support base 12. The fixture base 13 is centrally arranged in the processing window 11. The fixture base 13 is composed of three circular ring plates evenly distributed in series. Glass fixtures 2 are correspondingly and embeddedly assembled in the circular holes of each circular ring plate on the fixture base 13. There are a total of three glass fixtures 2 arranged in a straight line, corresponding to three processing stations that can be ground synchronously.

[0035] As Figure 6 、 Figure 7 、Figure 8 , Figure 9 , Figure 10 and Figure 14 As shown in Figure 8 , Figure 9 , Figure 10 and Figure 14 , the glass fixture 2 includes a hinge seat frame 21. The hinge seat frame 21 includes a hinge seat plate 211 and a flexible ring 212 that are both in a ring structure. An annular groove is formed on the outer peripheral surface of the flexible ring 212, and the hinge seat plate 211 is embedded in the annular groove and fixed to the fixture seat 13 by screws; a cylinder 22 for placing the cylindrical optical glass 6 is horizontally rotatably installed in the hinge seat frame 21. The inner radius of the cylinder 22 is slightly larger than the radius of the optical glass 6 to be polished, and the radius difference is between 0.5 cm and 1 cm, which is convenient for placing the optical glass 6 into the cylinder 22; a rotating pin 221 is horizontally and relatively threadedly connected to the outer wall of the cylinder 22. The rotating pin 221 passes through the flexible ring 212 and is rotatably installed on the hinge seat plate 211. The flexible ring 212 is sleeved on the cylinder 22, and a flexible seal contact is formed between the outer wall of the cylinder 22 and the flexible ring 212. In this embodiment, the flexible ring 212 is made of rubber material. The hinge seat plate 211 serves as the rotating support seat for the rotation of the cylinder 22. When the cylinder 22 rotates, it will squeeze and cause the flexible ring 212 to deform, but at the same time, it can maintain the relative seal between the flexible ring 212 and the outer wall of the cylinder 22. In order to make the extrusion stress evenly distributed and partially released, a plurality of shrinkage slots 213 are circumferentially and evenly distributed on the inner peripheral surface of the flexible ring 212.

[0036] As Figure 6 , Figure 7 , Figure 11 and Figure 14 As shown in Figure 6 , Figure 7 , Figure 11 and Figure 14 , an adsorbing member 23 for negatively adsorbing the bottom end of the optical glass 6 is slidably installed along the inner bottom of the cylinder 22; the adsorbing member 23 includes an air pipe 231. The top end of the air pipe 231 is welded with an air chamber cylinder 232. An air hole cover 233 is sleeved on the air chamber cylinder 232 by thread fit. The air hole cover 233 and the air chamber cylinder 232 together form an adsorption part, and the air hole cover 233 is slidably installed in the cylinder 22; the bottom ends of the air pipes 231 of multiple glass fixtures 2 are jointly connected to an external negative pressure generator through a hose. In this embodiment, the negative pressure generator can be an existing vacuum pump.

[0037] When the optical glass 6 is placed in the cylinder 22, it will fall on the adsorption end surface of the air hole cover 233. The position of the air hole cover 233 in the cylinder 22 determines the placement depth of the optical glass 6 in the cylinder 22. When polishing optical glasses 6 with different thicknesses, the placement depth needs to be appropriate. The appropriate depth means that on the one hand, the optical glass 6 should be placed as deep as possible in the cylinder 22, with a better fixed state and more conducive to the stability of the polishing process. On the other hand, the wedge angle surface of the optical glass 6 needs to be exposed from the cylinder 22 to facilitate processing; therefore, as Figure 2 and Figure 5As shown in the figure, a depth adjuster 3 is assembled between multiple air pipes 231 to synchronously adjust the positions of the three suction attachments 23 inside the cylinder 22 according to the thickness of the optical glass 6. The depth adjuster 3 includes a series connection plate 31, a rotating support 32, and a lead screw 33. The three air pipes 231 pass through the series connection plate 31, and the series connection plate 31 is welded to each air pipe 231. The rotating support 32 is fixed to the bottom end of the cylinder 22 in the middle glass fixture 2 by screws. The lead screw 33 is rotatably installed on the rotating support 32, and the lead screw 33 is threadedly connected to the series connection plate 31. The cooperation between the lead screw 33 and the rotating support 32 constitutes a driving assembly for driving the series connection plate 31 to move. Obviously, by rotating the lead screw 33, the three suction attachments 23 can be synchronously driven by the series connection plate 31 to slide inside their respective cylinders 22, thereby adjusting the position of the adsorption end face of the air hole cover 233 in the axial direction of the cylinder 22. The depth adjuster 3 also enhances the synchronism of the rotation of the three cylinders 22.

[0038] As Figure 6 , Figure 7 , Figure 12 , Figure 13 and Figure 14 As shown in the figure, in order to cooperate with the suction attachment 23 to further fix the optical glass 6, a fixing clamp 24 is assembled at the top end of the cylinder 22. The fixing clamp 24 includes two semi-circular clamps 244 and a sealing ring 241 for making sealing contact with the outer side wall of the optical glass 6. For the convenience of fitting installation, the top end of the cylinder 22 is a stepped port 222. And for positioning and assembly, positioning keys 223 are oppositely arranged on the outer wall of the cylinder 22. The sealing ring 241 is snap-fitted at the stepped port 222 and is in positioning cooperation with the positioning keys 223. The sealing ring 241 is also fixed to the outer wall of the cylinder 22 by screws. On the inner side wall of the sealing ring 241, clamping grooves 242 are symmetrically opened on both sides of the relative rotation pins 221. The two semi-circular clamps 244 are respectively and embeddedly installed in the two clamping grooves 242. Multiple convex structures are arranged on the outer peripheral surface of the semi-circular clamp 244 for positioning cooperation with the clamping grooves 242. In order to enable the two semi-circular clamps 244 to exert a pulling effect on the sealing ring 241 in half, the semi-circular clamps 244 are also connected to the sealing ring 241 by multiple screws. In this embodiment, the sealing ring 241 is made of rubber material. Similar to the shrinkage seam 213 opened on the flexible ring 212, two deformation seams 243 are opened on the outer peripheral surface of the sealing ring 241 and are arranged oppositely. The two deformation seams 243 are distributed between the two clamping grooves 242. In addition, the radius of the inner peripheral surface of the semi-circular clamp 244 is the same as the cylindrical radius of the optical glass 6, that is, the semi-circular clamp 244 can be clamped on the outer side wall of the optical glass 6.

[0039] As Figure 6 , Figure 7 and Figure 8As shown, two linkage members 25 are assembled between the hinge seat plate 211 and the two semi-circular clamps 244. The two linkage members 25 are horizontally symmetrically arranged and are adjacent to each other at the positions of the two deformation joints 243 one by one. The linkage member 25 includes two connecting shafts 251 that are threadedly connected to two adjacent end positions of the two semi-circular clamps 244 one by one. The other ends of the two connecting shafts 251 are each hinged with a connecting rod 252. The other ends of the two connecting rods 252 are jointly hinged with a sliding sleeve 253. A sliding plate 254 is slidably fitted in the sliding sleeve 253. The sliding plate 254 is fixed to the adjacent rotating pin 221 by screws. A spring piece 255 is connected between the outer wall of the sliding sleeve 253 and the hinge seat plate 211 by bolts.

[0040] As Figure 1 and Figure 2 shown, a grinding mechanism 5 is assembled on the grinding table 1 for synchronously grinding the wedge angle surfaces of the optical glasses 6 in the three glass clamps 2. The grinding mechanism 5 includes a lifting machine frame 51. The lifting machine frame 51 includes a support frame 511 fixed to the table top of the grinding table 1 by bolts. Two guide columns 512 are vertically slidably installed on the support frame 511. The bottoms of the two guide columns 512 are horizontally fixed with a lift seat 513 by bolts. A cylinder can be vertically installed at the top of the support frame 511, and the lift seat 513 is fixed to the output end of the cylinder. Three grinding machines 52 are assembled on the lift seat 513 and are distributed one by one directly above the three glass clamps 2. The grinding machine 52 is an existing grinding execution component that uses a grinding disc for rotary grinding. It should be noted that the cylinder for driving the lift seat 513 and the related driving structures of the grinding machine 52 are not shown in the drawings and can be referred to the prior art.

[0041] As Figure 2 and Figure 6As shown, in this embodiment, three-station synchronous grinding is adopted. In order to facilitate the horizontal grinding of the optical glass 6 by the grinding mechanism 5, the wedge angle surfaces of the three optical glasses 6 need to be adjusted to the horizontal state. A wedge angle adjusting member 4 is also assembled at the bottom of the grinding table 1; the wedge angle adjusting member 4 includes a push-pull cylinder 42 horizontally fixed at the bottom of the grinding table 1. The output end of the push-pull cylinder 42 is fixed with a travel plate 41 by bolts. Two guide rods 411 horizontally slidably installed at the bottom of the grinding table 1 are welded on the travel plate 41; Pipe sleeves 43 are slidably sleeved on the three air pipes 231, and the three pipe sleeves 43 are jointly hinged on the travel plate 41. In this embodiment, when the telescopic rod of the push-pull cylinder 42 is fully extended, the air pipe 231 is in a vertical state. When the telescopic rod of the push-pull cylinder 42 contracts, the travel plate 41 is pulled to slide horizontally. The travel plate 41 then pulls the air pipe 231 through the pipe sleeve 43, and the cylinder 22 rotates on the hinge seat plate 211 through the rotation pin 221. The air pipe 231 and the cylinder 22 rotate and tilt synchronously, and then the wedge angle surface of the optical glass 6 placed in the cylinder 22 can be adjusted to the horizontal state accordingly, so as to facilitate horizontal grinding. It should be added here that in order to cooperate with the wedge angle adjusting member 4 to achieve a linkage effect, the connection point between the spring piece 255 and the hinge seat plate 211 is located on one side of the rotation pin 221 and on the side close to the wedge angle adjusting member 4; in addition, the position of the rotation pin 221 in the glass fixture 2 is determined. Therefore, different contraction lengths of the push-pull cylinder 42 correspond to determined inclination wedge angles of the air pipe 231. The required inclination wedge angle to be adjusted is the same as the wedge angle of the wedge angle surface of the optical glass 6. For the optical glass 6 with a known wedge angle, the push-pull cylinder 42 contracts to the corresponding length.

[0042] The present invention provides a high-precision wedge angle grinding device for large-sized optical glass, which can be used for synchronous batch grinding processing of multiple optical glasses 6, and its processing process is specifically described as follows.

[0043] First, when the cylinder 22 in the glass fixture 2 is in a vertical state, the optical glass 6 to be ground is placed in the cylinder 22 of each glass fixture 2. Then, according to the depth of the optical glass 6 in the cylinder 22, it can be appropriately adjusted through the depth adjusting member 3 so that the optical glass 6 is in a reasonable depth position in the cylinder 22. Subsequently, the three optical glasses 6 are placed upright one by one so that the wedge angle surfaces of the three optical glasses 6 are basically coplanar. As shown in Figure 1 and Figure 2 the state shown, during the placement process, the flat plate can be used to assist the operation, that is, the flat plate is gently pressed on the three optical glasses 6 to promote the passive adjustment of the optical glasses 6.

[0044] Next, the cylinder 22 of the three glass clamps 2 is synchronously rotated by the wedge angle adjusting member 4, so as to adjust the wedge angle surface of the optical glass 6 to the horizontal state. During the rotation adjustment process, in the linkage member 25, the slide plate 254 and the sliding sleeve 253 rotate synchronously as a whole along with the rotation pin 221, and the relative angle between the sliding sleeve 253 and the hinge seat frame 21 located between the spring pieces 255 increases with the rotation, so that the spring pieces 255 tend to be stretched. Subsequently, the spring pieces 255 pull the sliding sleeve 253 to slide close to the rotation pin 221, and the included angle of the two connecting rods 252 is reduced accordingly. Thus, the two semi-circular clamps 244 are driven to approach relatively by the two connecting shafts 251. Driven by the synchronous linkage of the two linkage members 25, the two semi-circular clamps 244 clamp and fix the side wall of the optical glass 6. Under the action of the two semi-circular clamps 244 pulling the sealing ring 241 in half, the sealing ring 241 fits more tightly around the outer wall of the optical glass 6. The sealing ring 241 can not only achieve sealing but also play an auxiliary fixing role.

[0045] Subsequently, the optical glass 6 is fixed by negative pressure adsorption through the adsorbing member 23 to achieve further fixation. Then, the three optical glasses 6 are ground horizontally one by one through the three grinding mechanisms 5 in the grinding mechanism 5.

[0046] After grinding, first release the adsorbing member 23, and then reset the glass clamp 2 to the vertical state through the wedge angle adjusting member 4. Subsequently, driven by the linkage member 25, the clamping of the optical glass 6 by the fixing clamp 24 is released. Finally, each optical glass 6 can be taken out from the glass clamp 2 one by one.

[0047] As Figure 1 、 Figure 2 、 Figure 3 and Figure 4 shown, in order to facilitate the rapid centralized filtration and recycling of the grinding fluid during the grinding process, a liquid collecting system for filtering and recycling the grinding fluid is also assembled on the grinding table 1. The liquid collecting system includes a filter screen plate 14 and a liquid collecting tank 15. The filter screen plate 14 is detachably installed. The filter screen plate 14 avoids the three glass clamps 2 and overlaps on the upper end surface of the clamp seat 13, and overlaps on the upper edge of the processing window 11; the filter screen plate 14 can be fixed by screws or directly overlapped and placed. During the grinding process, the grinding fluid will be mixed with grinding particles, and the size of the grinding particles is determined by the grinding accuracy of the optical glass 6. The mesh size of the filter screen plate 14 is smaller than the size of the grinding particles; the liquid collecting tank 15 is fixed to the lower end surface of the clamp seat 13 and the lower edge of the processing window 11 by screws, and the liquid collecting tank 15 also plays an auxiliary supporting role for the clamp seat 13. The liquid collecting system should also include a structure for guiding the grinding fluid out of the liquid collecting tank 15 and reusing it and other structures. In addition, a retaining cover 16 is fixed to the table top of the grinding table 1 by screws, so that the processing window 11 is located inside the retaining cover 16 to prevent the grinding fluid from splashing out during the processing.

[0048] In the present invention, at each glass fixture 2, when the cylinder 22 is adjusted in angle, the hinge seat frame 21 always maintains relative sealing with the cylinder 22 through the flexible ring 212, and the fixed clamp 24 maintains relative sealing with the optical glass 6 through the sealing ring 241. During the entire grinding process, the grinding fluid basically flows along the overall outer edge of the glass fixture 2 to the filter plate 14 and is preliminarily filtered by the filter plate 14 and collected in the liquid collection tank 15, so as to achieve rapid guiding and centralized recovery of the grinding fluid, avoid the random flow of the grinding fluid in the entire processing area. In addition, through the sealing isolation, the grinding fluid basically does not enter the cylinder 22 and does not block the air holes of the suction attachment 23, avoiding the pollution of the clamping and fixing area of the glass fixture 2 by the grinding fluid, ensuring the grinding positioning and fixing accuracy of the optical glass 6, and also reducing the frequency of manual cleaning and maintenance; after long-term filtration, the filter plate 14 can be removed and reinstalled after cleaning.

[0049] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0050] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "connected", "installed", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

[0051] The preferred embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and the devices and structures not described in detail should be understood to be implemented in a common manner in the art; any person skilled in the art can make many possible changes and modifications without departing from the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes, which does not affect the essence of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A high-precision wedge angle grinding device for large-size optical glass, characterized in that, Comprising: A grinding table; A plurality of glass jigs, which are fixedly distributed along a straight line on the grinding table; the glass jig includes a hinge seat frame fixed on the grinding table, a cylinder for placing a cylindrical optical glass is horizontally rotatably installed in the hinge seat frame, and a flexible sealing contact is formed between the outer wall of the cylinder and the hinge seat frame; a suction attachment for negatively adsorbing the bottom end of the optical glass is slidably installed along the inside of the bottom of the cylinder; a fixed clamp is assembled at the top of the cylinder, and a linkage is connected between the fixed clamp and the hinge seat frame; A depth adjustment member, which is assembled and connected between the suction attachments of a plurality of glass jigs, and is used to synchronously adjust the positions of the plurality of suction attachments inside the cylinder according to the thickness of the optical glass; A wedge angle adjustment member, which is assembled on the grinding table to drive the plurality of glass jigs to rotate synchronously, and is used to adjust the wedge angle surface of the optical glass fixed in the glass jig to a horizontal state, and when the glass jig rotates, the linkage drives the fixed clamp to clamp, fix and seal the side wall of the optical glass; And a grinding mechanism, which is assembled on the grinding table and is used to synchronously grind the wedge angle surfaces of the optical glasses in the plurality of glass jigs; a liquid collecting system for filtering and recycling the grinding liquid is arranged on the grinding table.

2. The high-precision wedge angle grinding device for large-size optical glass according to claim 1, wherein: A processing window is opened on the tabletop of the grinding table, and a jig seat is arranged in the processing window on the grinding table; a plurality of glass jigs are installed in the jig seat in a penetrating and embedded manner.

3. A large-size optical glass high-precision wedge angle grinding device according to claim 2, characterized in that: The hinge seat frame includes a hinge seat plate and a flexible ring both in a ring structure. An annular groove is opened on the outer peripheral surface of the flexible ring, the hinge seat plate is embedded and installed in the annular groove, and the hinge seat plate is fixed on the jig seat; a rotating pin is horizontally and relatively fixed on the outer wall of the cylinder, the rotating pin passes through the flexible ring and is rotatably installed on the hinge seat plate, and the flexible ring is sleeved and sealed on the cylinder.

4. A high-precision wedge angle grinding device for large-sized optical glass according to claim 3, characterized in that: The fixed clamp includes two semi-circular clamps and a sealing ring for making sealing contact with the outer side wall of the optical glass. The two semi-circular clamps are relatively distributed on both sides of the rotating pin and are both embedded and fixed on the inner side wall of the sealing ring; the sealing ring is fixed at the top of the cylinder; the linkage is connected between two adjacent end positions of the two semi-circular clamps.

5. An apparatus for high-precision wedge angle grinding of large-sized optical glass according to claim 4, characterized in that: The linkage includes two connecting shafts respectively fixed at two adjacent end positions of the two semi-circular clamps. The other ends of the two connecting shafts are respectively hinged with a connecting rod, the other ends of the two connecting rods are jointly hinged with a sliding sleeve, a sliding plate is slidably fitted and installed in the sliding sleeve, the sliding plate is fixed on the rotating pin at the adjacent position, and an elastic connection is formed between the outer wall of the sliding sleeve and the hinge seat plate.

6. The high-precision wedge angle grinding device for large-sized optical glass according to claim 1, wherein: The suction attachment includes a suction part slidably fitted in the cylinder and an air pipe communicated with the suction part; the depth adjustment member and the wedge angle adjustment member are both connected between a plurality of air pipes.

7. An apparatus for high-precision wedge angle grinding of large-sized optical glass according to claim 6, characterized in that: The wedge angle adjustment member includes a stroke plate horizontally movably installed at the bottom of the grinding table, and a pipe sleeve is slidably sleeved and installed on each of the plurality of air pipes, and the plurality of pipe sleeves are jointly hinged on the stroke plate.

8. A high-precision wedge angle grinding device for large-sized optical glass according to claim 6, characterized in that: The depth adjustment member includes a series plate serially fixed between a plurality of air pipes and a driving component for driving the series plate to move axially along the cylinder, and the driving component is assembled at the bottom end of one of the cylinders.

9. An apparatus for high-precision wedge angle grinding of large-sized optical glass according to claim 2, characterized in that: The liquid collecting system includes a filter screen plate and a liquid collecting tank. The filter screen plate is detachably installed. The filter screen plate avoids a plurality of glass clamps and overlaps on the upper end surface of the clamp seat, and overlaps on the upper edge of the processing window; the liquid collecting tank is fixed on the lower end surface of the clamp seat and the lower edge of the processing window.

10. A high-precision wedge angle grinding device for large-size optical glass according to claim 4, characterized in that: A plurality of shrinkage slits are circumferentially distributed on the inner peripheral surface of the flexible ring; two deformation slits are arranged oppositely on the outer peripheral surface of the sealing ring. The two deformation slits are adjacent to each other in pairs at two sets of adjacent ports of the two semi-circular clamps, and the deformation slits are located between two adjacent ports in the same group.

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