A high-precision wedge angle grinding device for large-size optical glass

Abstract

The present invention relates to the technical field of optical component processing, and specifically proposes a high-precision wedge-angle grinding device for large-size optical glass; the device comprises: a grinding table; a plurality of glass clamps; the glass clamp comprises a hinge frame, a cylinder is horizontally rotatably mounted in the hinge frame, and an adsorption member is slidably mounted on the bottom of the cylinder along the cylinder; a fixed clamp is assembled on the top of the cylinder, and a linkage member is connected between the fixed clamp and the hinge frame; a depth adjustment member is assembled and connected between the adsorption members of the plurality of glass clamps; a wedge angle adjustment member is used to drive the plurality of glass clamps to rotate synchronously; and a grinding mechanism; a liquid collection system is provided on the grinding table; the device provides a plurality of grinding processing stations, which can adjust a plurality of optical glasses to a synchronous grinding state for 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 isolation between the glass clamp and the grinding liquid is achieved to ensure the continuity of the clamp use and the clamping positioning accuracy.

Description

Technical Field

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

[0002] Optical glass, as the name suggests, refers to optical lenses made of glass. It can be divided into several types according to different functions and needs. Among them, wedge prism is a special optical lens. It is generally processed with a top angle with a certain wedge angle at one end, which is called a wedge angle. It is often used in beam control applications, such as adjusting or deflecting the direction of the light beam. According to its shape, wedge prism can be divided into cylindrical or polygonal three-dimensional structures.

[0003] In the processing of wedge prisms, it generally goes through multiple processing steps such as material selection, angle cutting, rough grinding, fine grinding, polishing and quality inspection. Among them, rough grinding and fine grinding together constitute the grinding process. Grinding is an important step to ensure the flatness and precision of the optical glass surface processing. Generally, special grinding equipment is used for processing. For large-sized wedge prisms, existing equipment usually only grinds a single lens workpiece, which greatly affects the overall grinding efficiency. Grinding one by one also increases the difference in the degree of grinding between each optical lens. In addition, during the grinding process, grinding fluid will be sprayed synchronously, and there will be a lot of particulate matter in the grinding fluid. The optical lens usually needs to be fixed in the corresponding fixture, and the existing grinding equipment usually does not have a good isolation between the fixture and the grinding fluid, which makes it inconvenient to fully and quickly recover the grinding fluid. On the other hand, it causes the grinding fluid to contaminate the fixture area, thereby affecting the clamping positioning state and precision of the optical glass, and requires frequent manual cleaning and maintenance. 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, which is used to solve the problems mentioned in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a large-size optical glass high-precision wedge angle grinding device, comprising: a grinding table; a plurality of glass clamps, which are fixed on the grinding table along a straight line; the glass clamp comprises a hinge frame fixed on the grinding table, a cylinder for placing cylindrical optical glass is installed in the hinge frame for horizontal rotation, and a flexible sealing contact is formed between the outer wall of the cylinder and the hinge frame; an adsorption part for negative pressure adsorption of the bottom end of the optical glass is installed on the bottom of the cylinder along the sliding inside of the cylinder; a fixed clamp is installed on the top of the cylinder, and a linkage part is connected between the fixed clamp and the hinge frame; a depth adjustment part is assembled It is connected between the adsorption parts of multiple glass clamps and is used to synchronously adjust the positions of multiple adsorption parts in the cylinder according to the thickness of the optical glass; the wedge angle adjustment part is assembled on the grinding table to drive the multiple glass clamps to rotate synchronously, and is used to adjust the wedge angle surface of the optical glass fixed in the glass clamp to a horizontal state, and when the glass clamp rotates, the linkage part drives the fixed clamp to clamp and seal the side wall of the optical glass; and the grinding mechanism is assembled on the grinding table to synchronously grind the wedge angle surfaces of the optical glass in multiple glass clamps; the grinding table is provided with a liquid collection system for filtering and recovering the grinding liquid.

[0006] Preferably, a processing window is provided on the table top of the grinding table, and a fixture seat is provided on the grinding table in the processing window; a plurality of glass fixtures are embedded and installed on the fixture seat.

[0007] Preferably, the hinge seat frame includes a hinge seat plate and a flexible ring, both of which are annular structures. An annular groove is provided on the outer peripheral surface of the flexible ring, the hinge seat plate is embedded in the annular groove, and the hinge seat plate is fixed on the clamp seat; a rotating pin is fixed horizontally 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.

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

[0009] Preferably, the linkage part includes two connecting shafts fixed one-to-one at two adjacent end positions of the two semicircular clamps, the other ends of the two connecting shafts are hinged with connecting rods, the other ends of the two connecting rods are jointly hinged with a sliding sleeve, a slide is slidably installed in the sliding sleeve, the slide is fixed on the rotating pin at the adjacent position, and the outer wall of the sliding sleeve and the hinge seat plate are elastically connected.

[0010] Preferably, the adsorption member includes an adsorption portion that is slidably fitted in the cylinder and an air pipe connected to the adsorption portion; the depth adjustment member and the wedge angle adjustment member are both connected between the multiple air pipes.

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

[0012] Preferably, the depth adjustment member includes a connecting plate fixed in series between the 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 overlaps the upper end surface of the fixture seat, avoiding multiple glass clamps, and overlaps the upper end edge of the processing window; the liquid collection tank is fixed at the lower end surface of the fixture seat and the lower end edge of the processing window.

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

[0015] The above technical solution has the following advantages or beneficial effects: The present invention provides a high-precision wedge angle grinding device for large-size optical glass, which is provided with multiple glass fixtures arranged in a linear manner and capable of clamping and fixing the optical glass respectively, and provides multiple synchronous grinding processing stations. A depth adjustment member and a wedge angle adjustment member are commonly connected to the multiple glass fixtures. The depth adjustment member can be used to synchronously adjust the reasonable placement depth of the multiple optical glasses in the glass fixture, and the wedge angle adjustment member can be used to rotate and adjust the multiple glass fixtures so that the wedge angle surfaces of the optical glasses are adjusted to a horizontal state, thereby adjusting the multiple optical glasses to a synchronous grinding state, so as to facilitate batch synchronous grinding, thereby improving the grinding processing efficiency and reducing the difference in the grinding processing degree between different optical glasses; in addition, 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 is used to achieve isolation between the glass fixture and the grinding liquid, and the grinding liquid can be guided to flow quickly to the collection area for rapid and sufficient recovery. It also minimizes the contamination of the grinding liquid on the clamping working area of the glass fixture, greatly reducing the frequency of cleaning the glass fixture, and ensuring the continuity of fixture use and clamping positioning accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

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

[0021] Figure 5 It is a three-dimensional structural diagram of the assembly between multiple glass clamps assembled on the clamp base and the depth adjustment member.

[0022] Figure 6 It is a three-dimensional structural diagram of the assembly between multiple glass clamps assembled on the clamp base and the wedge angle adjustment member.

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

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

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

[0026] Figure 10 This is a three-dimensional structural diagram of the flexible ring.

[0027] Figure 11 It is a three-dimensional cross-sectional view of the adsorption component.

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

[0029] Figure 13 It is a three-dimensional structural diagram of a semicircular clamp.

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

[0031] In the figure: 1, grinding table; 11, processing window; 12, support seat; 13, fixture seat; 14, filter plate; 15, liquid collecting tank; 16, enclosure cover; 2, glass fixture; 21, hinge seat frame; 211, hinge seat plate; 212, flexible ring; 213, contraction joint; 22, cylinder; 221, rotating pin; 222, step port; 223, positioning key; 23, adsorption part; 231, air pipe; 232, air chamber cylinder; 233, air hole cover; 24, fixing clamp; 241, sealing ring; 242, slot; 24 3. Deformation gap; 244. Semicircular clamp; 25. Linkage; 251. Connecting shaft; 252. Connecting rod; 253. Sleeve; 254. Slide plate; 255. Spring leaf; 3. Depth adjustment member; 31. Connecting plate; 32. Rotating support; 33. Lead screw; 4. Wedge angle adjustment 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 column; 513. Lifting base; 52. Grinding machine; 6. Optical glass. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

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

[0034] like Figure 1 、 Figure 2 and Figure 3 As shown, a large-size optical glass high-precision wedge angle grinding device is used for Figure 14 As shown, a type of cylindrical wedge-angle optical glass 6 is ground. The radius of this type of optical glass 6 is the same, but the overall thickness and 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 seat 12 extending to the area where the processing window 11 is located is horizontally welded to the bottom of the grinding table 1, and a clamp seat 13 is horizontally welded on the support seat 12. The clamp seat 13 is centrally arranged in the processing window 11. The clamp seat 13 is composed of three circular ring plates evenly distributed in series. A glass clamp 2 is embedded in the circular hole of each circular ring plate on the clamp seat 13. There are a total of three glass clamps 2 distributed in a straight line, corresponding to three processing stations that can grind synchronously.

[0035] like Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 and Figure 14 As shown, the glass fixture 2 includes a hinge frame 21, which includes a hinge plate 211 and a flexible ring 212, both of which are annular structures. An annular groove is provided on the outer circumference of the flexible ring 212, and the hinge plate 211 is embedded in the annular groove. The hinge plate 211 is fixed to the fixture seat 13 by screws; a cylinder 22 for placing a cylindrical optical glass 6 is horizontally rotatably installed in the hinge frame 21, and the inner radius of the cylinder 22 is slightly larger than the radius of the optical glass 6 to be ground, 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 connected to the outer wall of the cylinder 22 with a relative thread. 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 the outer wall of the cylinder 22 and the flexible ring 212 are in flexible sealing contact. In this embodiment, the flexible ring 212 is made of rubber material, and the hinge seat plate 211 serves as a rotating support seat for the rotation of the cylinder 22. When the cylinder 22 rotates, it will squeeze and force the flexible ring 212 to deform, but at the same time maintain the relative seal between the flexible ring 212 and the outer wall of the cylinder 22. In order to ensure that the extrusion stress can be evenly distributed and partially released, a plurality of shrinkage seams 213 are evenly distributed circumferentially on the inner circumference of the flexible ring 212.

[0036] like Figure 6 、 Figure 7 、 Figure 11 and Figure 14 As shown, an adsorption member 23 for negative pressure adsorption of the bottom end of the optical glass 6 is installed in a sliding manner along the bottom of the cylinder 22; the adsorption member 23 includes an air pipe 231, and an air chamber tube 232 is welded to the top end of the air pipe 231. An air hole cover 233 is fitted on the air chamber tube 232 through a threaded fit. The air hole cover 233 and the air chamber tube 232 together constitute an adsorption part, and the air hole cover 233 is slidably fitted in the cylinder 22; the bottom ends of the air pipes 231 of multiple glass clamps 2 are commonly connected to an external negative pressure generator through a hose. In this embodiment, the negative pressure generator can use an existing vacuum pump.

[0037] When the optical glass 6 is placed in the cylinder 22, it falls on the adsorption end surface of the pore cover 233. The position of the pore cover 233 in the cylinder 22 determines the placement depth of the optical glass 6 in the cylinder 22. When grinding optical glasses 6 of different thicknesses, it is necessary to place them at an appropriate depth. The appropriate depth means that on the one hand, the optical glass 6 is placed as deep as possible in the cylinder 22, which is better fixed and more conducive to the stability of the grinding 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, if Figure 2 and Figure 5As shown, a depth adjustment member 3 is installed between multiple air tubes 231, which is used to synchronously adjust the positions of the three adsorption members 23 in the cylinder 22 according to the thickness of the optical glass 6; the depth adjustment member 3 includes a serial plate 31, a rotating support 32 and a screw 33. The three air tubes 231 pass through the serial plate 31, and the serial plate 31 is welded on each air tube 231. The rotating support 32 is fixed to the bottom end of the cylinder 22 in the middle glass clamp 2 by screws. The screw 33 is rotatably installed on the rotating support 32, and the screw 33 is threadedly connected to the serial plate 31. The cooperation between the screw 33 and the rotating support 32 constitutes a driving component for driving the serial plate 31 to move. Obviously, by rotating the screw 33, the three adsorption members 23 can be synchronously driven to slide in their respective cylinders 22 through the serial plate 31, 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 adjustment member 3 also enhances the synchronization of the rotation of the three cylinders 22.

[0038] like Figure 6 、 Figure 7 、 Figure 12 、 Figure 13 and Figure 14 As shown, in order to cooperate with the adsorption member 23 to further fix the optical glass 6, a fixing clamp 24 is assembled on the top of the cylinder 22; the fixing clamp 24 includes two semicircular clamps 244 and a sealing ring 241 for sealing the outer wall of the optical glass 6. In order to facilitate the installation, the top of the cylinder 22 is a step port 222, and for positioning and assembly, a positioning key 223 is relatively provided on the outer wall of the cylinder 22. The sealing ring 241 is installed at the step port 222 and is positioned with the positioning key 223. The sealing ring 241 is also fixed to the outer wall of the cylinder 22 by screws. The inner side wall of the sealing ring 241 is symmetrically provided with a card groove 242 on both sides of the rotating pin 221. The two semicircular clamps 244 are embedded in the two corresponding ones. In the slot 242, a plurality of protruding structures are provided on the outer circumference of the semicircular clamp 244 for cooperating with the slot 242 for positioning. In order to enable the two semicircular clamps 244 to exert a half-pulling effect on the sealing ring 241, the semicircular clamp 244 is also connected to the sealing ring 241 by a plurality of screws. In this embodiment, the sealing ring 241 is made of rubber material. The function of the shrinkage seam 213 provided on the flexible ring 212 is the same as that of the outer circumference of the sealing ring 241. Two deformation seams 243 are arranged oppositely, and the two deformation seams 243 are distributed between the two slots 242. In addition, the radius of the inner circumference of the semicircular clamp 244 is the same as the cylindrical radius of the optical glass 6, that is, the semicircular clamp 244 can be clamped on the outer wall of the optical glass 6.

[0039] like Figure 6 、 Figure 7 and Figure 8As shown, two linkage parts 25 are assembled between the hinge seat plate 211 and the two semicircular clamps 244. The two linkage parts 25 are arranged horizontally symmetrically and are distributed one-to-one adjacent to the two deformation gaps 243. The linkage part 25 includes two connecting shafts 251 that are threadedly connected to the two adjacent end positions of the two semicircular clamps 244. The other ends of the two connecting shafts 251 are hinged with connecting rods 252, and the other ends of the two connecting rods 252 are hinged with sliding sleeves 253. A slide plate 254 is slidably installed in the sliding sleeve 253. The slide plate 254 is fixed to the rotating pin 221 at the adjacent position by screws. A spring sheet 255 is connected between the outer wall of the sliding sleeve 253 and the hinge seat plate 211 by bolts.

[0040] like Figure 1 and Figure 2 As shown, the grinding table 1 is equipped with a grinding mechanism 5 for synchronously grinding the wedge angle surfaces of the optical glass 6 in the three glass fixtures 2; the grinding mechanism 5 includes a lifting frame 51, and the lifting frame 51 includes a support frame 511 fixed to the table top of the grinding table 1 by bolts, and two guide columns 512 are vertically slidably installed on the support frame 511, and the bottom ends of the two guide columns 512 are horizontally fixed with a lifting seat 513 by bolts. A cylinder can be vertically installed on the top of the support frame 511, and the lifting seat 513 is fixed to the output end of the cylinder. Three grinders 52 are equipped on the lifting seat 513, which are distributed one to one directly above the three glass fixtures 2. The grinder 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 lifting seat 513 and the related driving structure of the grinder 52 are not shown in the drawings, and reference can be made to the prior art.

[0041] like Figure 2 and Figure 6As shown, in this embodiment, three-station synchronous grinding processing 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 a horizontal state, and the bottom of the grinding table 1 is also equipped with a wedge angle adjustment member 4; the wedge angle adjustment member 4 includes a push-pull cylinder 42 horizontally fixed to the bottom of the grinding table 1, and the output end of the push-pull cylinder 42 is fixed with a stroke plate 41 by bolts, and two guide rods 411 horizontally slidably installed on the bottom of the grinding table 1 are welded on the stroke plate 41; the three air pipes 231 are all slidably sleeved with pipe sleeves 43, and the three pipe sleeves 43 are hinged to the stroke plate 41 together. 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 is retracted, the stroke plate 41 is pulled to slide horizontally. The stroke plate 41 pulls the air pipe 231 through the pipe sleeve 43, and the cylinder 22 rotates on the hinge plate 211 through the rotating 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 a horizontal state to facilitate horizontal grinding. It should be added here that, in order to cooperate with the wedge angle adjustment member 4 to achieve a linkage effect, the connection point between the spring sheet 255 and the hinge seat plate 211 of the linkage member 25 is located on the side of the rotating pin 221 and on the side close to the wedge angle adjustment member 4; in addition, the position of the rotating pin 221 in the glass clamp 2 is determined, so the different contraction lengths of the push-pull cylinder 42 correspond to the determined wedge tilt angle of the air tube 231. The required adjustment wedge tilt angle 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 can be contracted to the corresponding length.

[0042] The present invention provides a high-precision wedge angle grinding device for large-size optical glass, which can be used to perform synchronous batch grinding processing on multiple optical glasses 6. The processing process is described in detail 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, the depth adjustment member 3 is appropriately adjusted so that the optical glass 6 is at a reasonable depth position in the cylinder 22. Subsequently, the three optical glasses 6 are aligned one by one so that the wedge angle surfaces of the three optical glasses 6 are basically coplanar. Figure 1 and Figure 2 In the state shown, during the alignment process, a flat plate can be used to assist the operation, that is, the flat plate can be lightly pressed against the three optical glasses 6 to cause the optical glasses 6 to be passively adjusted.

[0044] Next, the cylinders 22 of the three glass clamps 2 are driven to rotate synchronously by the wedge angle adjusting member 4, thereby adjusting the wedge angle surface of the optical glass 6 to a horizontal state. During the rotation adjustment process, in the linkage member 25, the slide plate 254 and the sliding sleeve 253 rotate synchronously with the rotating pin 221 as a whole, and the relative angle between the sliding sleeve 253 and the hinge frame 21 located at the spring piece 255 increases with the rotation, so that the spring piece 255 tends to be stretched, and then the spring piece 255 pulls the sliding sleeve 253 toward the rotating pin 221. As the two connecting rods 252 slide closer, the angle between the two connecting rods 252 decreases accordingly, thereby driving the two semicircular clamps 244 to move closer to each other through the two connecting shafts 251. Under the synchronous linkage drive of the two linkage members 25, the two semicircular clamps 244 clamp and fix the side walls of the optical glass 6. Under the half-pulling of the two semicircular clamps 244 on the sealing ring 241, 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 a role in auxiliary fixation.

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

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

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

[0048] In the present invention, at each glass fixture 2, when the cylinder 22 is adjusting its angle, the hinge frame 21 always maintains a relative seal with the cylinder 22 through the flexible ring 212, and the fixing clamp 24 maintains a relative seal with the optical glass 6 through the sealing ring 241, so that during the entire grinding process, the grinding liquid basically flows along the overall outer edge of the glass fixture 2 to the filter plate 14, and is collected into the liquid collection tank 15 after preliminary filtration by the filter plate 14, so as to achieve rapid guidance and centralized recovery of the grinding liquid, and avoid the random flow of the grinding liquid in the entire processing area. In addition, through sealing and isolation, the grinding liquid basically does not enter the cylinder 22, and does not block the pores of the adsorption part 23, thereby avoiding the contamination of the grinding liquid in the clamping and fixing area of the glass fixture 2, so as to ensure the grinding positioning and fixing accuracy of the optical glass 6, and also reduce the frequency of manual cleaning and maintenance; after a long period of filtration, the filter plate 14 can be removed and installed again after cleaning.

[0049] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are 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 understood as limiting the present invention.

[0050] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "connected," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0051] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can make many possible changes and modifications without departing from the technical solution of the present invention, or modify them into equivalent embodiments with equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention that do not depart from the content of the technical solution of the present invention are still 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: include: grinding table; Multiple glass fixtures are fixed on a grinding table along a straight line. The glass fixtures include a hinge frame fixed to the grinding table. A cylinder for placing cylindrical optical glass is horizontally mounted in the hinge frame, and the outer wall of the cylinder is in flexible sealing contact with the hinge frame. An adsorption member for applying negative pressure to the bottom end of the optical glass is mounted on the bottom of the cylinder along the inner surface of the cylinder. A fixing clamp is mounted on the top end of the cylinder, and a linkage is connected between the fixing clamp and the hinge frame. A depth adjustment member is assembled and connected between the adsorption members of the multiple glass clamps, and is used to synchronously adjust the positions of the multiple adsorption members in the cylinder according to the thickness of the optical glass; The wedge angle adjustment member is assembled on the grinding table and is used to drive multiple glass clamps to rotate synchronously. It is used to adjust the wedge angle surface of the optical glass fixed in the glass clamp to a horizontal state. When the glass clamp rotates, the linkage member drives the fixed clamp to clamp and seal the side wall of the optical glass. and a grinding mechanism, mounted on a grinding table, for synchronously grinding the wedge angle surfaces of optical glasses in a plurality of glass fixtures; a liquid collecting system for filtering and recovering the grinding liquid is provided on the grinding table; A processing window is provided on the table of the grinding table, and a fixture seat is provided on the grinding table in the processing window; a plurality of glass fixtures are embedded and installed on the fixture seat; The hinge seat frame includes a hinge seat plate and a flexible ring, both of which are annular structures. An annular groove is provided on the outer circumference of the flexible ring. The hinge seat plate is embedded in the annular groove and fixed to the fixture seat. A rotating pin is fixed horizontally on the outer wall of the cylinder. The rotating pin passes through the flexible ring and is rotatably mounted on the hinge seat plate. The flexible ring is sleeved and sealed on the cylinder. The fixing clamp includes two semicircular clamps and a sealing ring for sealing against the outer wall of the optical glass. The two semicircular clamps are relatively distributed on both sides of the rotating pin and are embedded and fixed on the inner wall of the sealing ring. The sealing ring is fixed to the top of the cylinder. The linkage is connected between the two adjacent end positions of the two semicircular clamps. The liquid collection system includes a filter plate and a liquid collection tank. The filter plate is detachably installed and overlaps the upper end surface of the fixture seat, avoiding multiple glass clamps, and overlaps the upper end edge of the processing window; the liquid collection tank is fixed on the lower end surface of the fixture seat and the lower end edge of the processing window.

2. The high-precision wedge angle grinding device for large-size optical glass according to claim 1, characterized in that: The linkage part includes two connecting shafts fixed one by one at the two adjacent end positions of the two semicircular clamps. The other ends of the two connecting shafts are hinged with connecting rods, and the other ends of the two connecting rods are hinged with a sliding sleeve. A slide is slidably installed in the sliding sleeve, and the slide is fixed on the rotating pin at the adjacent position. The outer wall of the sliding sleeve and the hinge seat plate are elastically connected.

3. The high-precision wedge angle grinding device for large-size optical glass according to claim 1, characterized in that: The adsorption member includes an adsorption portion that is slidably fitted in the cylinder and an air pipe connected to the adsorption portion; the depth adjustment member and the wedge angle adjustment member are both connected between the multiple air pipes.

4. The high-precision wedge angle grinding device for large-size optical glass according to claim 3, characterized in that: The wedge angle adjusting member comprises a travel plate which is horizontally movably mounted on the bottom of the grinding table. A plurality of air pipes are slidably sleeved with pipe sleeves which are hinged to the travel plate.

5. The high-precision wedge angle grinding device for large-size optical glass according to claim 3, characterized in that: The depth adjustment member includes 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. The driving assembly is assembled at the bottom end of one of the cylinders.

6. The high-precision wedge angle grinding device for large-size optical glass according to claim 1, characterized in that: A plurality of shrinkage seams are circumferentially distributed on the inner circumference of the flexible ring; two deformation seams are oppositely arranged on the outer circumference of the sealing ring, and the two deformation seams are distributed one-to-one at two groups of adjacent port positions of the two semicircular clamps, and the deformation seams are located between two adjacent ports in the same group.

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