A processing method and device for special-shaped aspherical lens

Abstract

The present invention discloses a processing method and equipment for a special-shaped aspheric lens, and relates to the technical field of lens processing. The method comprises the following steps: S1, selecting a suitable glass lens, and preliminarily processing the glass lens, so that the shape of the blank meets the requirements; S2, using a grinder to roughly grind the blank, so that the surface roughness and spherical radius of the blank meet the requirements of fine grinding; S3, fixing the rough-ground blank on a fine grinding and polishing device by adhesive, and fine-grinding and polishing the blank by the fine grinding and polishing device; S4, centering and edge grinding the polished blank, eliminating the eccentricity of the blank, and making the radial dimension of the side cylindrical surface of the blank meet the assembly requirements. The present invention can not only improve the processing efficiency of the glass lens when processing the glass lens by setting a switching component and a fixing component, but also make the surface processing of the glass lens more uniform, so that the use effect of the special-shaped aspheric lens is better.

Description

Technical Field

[0001] The invention relates to the technical field of lens processing, and in particular to a processing method and equipment for a special-shaped aspherical lens. Background Art

[0002] A special-shaped aspheric lens, also known as an aspheric lens, is an optical element with a non-spherically symmetrical surface. The radius of curvature from the center to the edge changes continuously with the increase in height. This unique curvature design gives the aspheric lens multiple advantages and applications in the optical system. When processing special-shaped aspheric lenses, complex processes such as grinding and polishing are required to finally obtain the finished product.

[0003] However, when different batches of existing special-shaped aspheric lenses are ground and polished, due to the different models of special-shaped aspheric lenses, operators need to use polishing pads or polishing equipment with different roughness to process the glass lenses, and need to replace the polishing pads or other polishing equipment multiple times, which prolongs the lens processing time and causes the polishing equipment to have low processing efficiency when encountering different models of special-shaped aspheric lenses.

[0004] At the same time, during grinding and polishing, although polishing liquid is used, there will be some fine impurities on the polishing pad that can easily rub against the surface of the special-shaped aspheric lens, causing abnormal wear of the special-shaped aspheric lens during fine grinding and polishing.

[0005] In response to the above problems, it is urgent to carry out innovative design based on the original basis. Summary of the invention

[0006] The purpose of the present invention is to provide a processing method and equipment for special-shaped aspheric lenses, so as to solve the problem that when different batches of special-shaped aspheric lenses have different models, the polishing pad needs to be replaced multiple times or other polishing equipment needs to be replaced, the polishing efficiency is low, and there are some fine impurities on the polishing pad that can easily rub against the surface of the special-shaped aspheric lens, causing abnormal wear of the special-shaped aspheric lens during fine grinding and polishing. The technical solution of the present invention is aimed at the technical problem that the existing technical solution is too single, and provides a solution that is significantly different from the existing technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a method for processing a special-shaped aspheric lens, comprising the following steps:

[0008] S1. Select a suitable glass lens and perform preliminary processing on the glass lens so that the shape of the blank meets the requirements;

[0009] S2. Use a grinder to coarsely grind the blank so that the surface roughness and spherical radius of the blank meet the requirements of fine grinding;

[0010] S3, fixing the rough-ground blank on a fine-grinding and polishing device by means of adhesive, and fine-grinding and polishing the blank by means of the fine-grinding and polishing device;

[0011] S4, centering and edge grinding the polished blank to eliminate the eccentricity of the blank and make the radial dimension of the side cylindrical surface of the blank meet the assembly requirements;

[0012] S5. The blank after centering and edge grinding is coated, and the quality of the coated blank is inspected. If the inspection is qualified, the processing of the special-shaped aspheric lens is completed.

[0013] Preferably, the fine grinding and polishing equipment includes a mounting frame, a control box is provided on one side of the mounting frame, a single-chip microcomputer controller is provided inside the control box, a first cylinder is fixedly connected to one side of the control box, a second cylinder is fixedly connected to the piston rod of the first cylinder, the tops of the first cylinder and the second cylinder are fixedly connected to a switching assembly, the switching assembly is used to drive different fine grinding and polishing discs to rotate, a servo motor is fixedly screwed on the other side of the mounting frame, a group of fine grinding and polishing discs with uniform intervals are provided between the servo motor and the switching assembly, both sides of the fine grinding and polishing discs are rotatably connected to the support seat, two adjacent support seats are connected by flanges, the support seats on both sides are fixedly connected to the mounting frame through mounting plates, a fixing assembly is fixedly connected to the switching assembly, the fixing assembly is used to fix the position of the glass lens, and a debris removal assembly is fixedly connected to the support seat on one side of the fine grinding and polishing disc, the debris removal assembly is used to clean the fine grinding and polishing disc.

[0014] Preferably, the switching assembly includes a push plate, one side of the push plate is fixedly connected to a hollow tube, one end of the hollow tube is rotatably connected to a switching column, a switching rod is slidably connected in the hollow tube, one end of the switching rod passes through the push plate, and the other end of the switching rod is located in the switching column, and a group of trigger rods in a circular array are arranged in the switching column.

[0015] Preferably, a dome is provided at one end of the switch rod located in the switch column, a dome is provided at one end of the trigger rod, a group of domes of the trigger rod are arranged in a circular array around the dome of the switch rod, a trigger groove in a circular array is provided on the side of the switch column, the trigger rod is slidably connected in the trigger groove, a block is provided at the other end of the trigger rod, the block is located in the trigger groove, and a first spring is provided between the dome of the trigger rod and the inner wall of the switch column.

[0016] Preferably, the push plate is fixedly connected to the piston rod of the first cylinder, one end of the switching rod is fixedly connected to the piston rod of the second cylinder, a rotating groove is opened in the middle of the fine grinding and polishing disk, and a locking tooth is arranged on the side wall of the rotating groove of the fine grinding and polishing disk, the switching column is rotatably connected in the rotating groove of the fine grinding and polishing disk, the blocking block in the trigger rod is cooperated with the locking tooth of the fine grinding and polishing disk, one side of the switching column is fixedly connected to a limiting telescopic rod, and the other end of the limiting telescopic rod is rotatably connected to the output shaft of the servo motor.

[0017] Preferably, the fixing assembly comprises an electric push rod, a screw rod of the electric push rod is fixedly connected to one side of a support plate, and one end of the support plate is rotatably connected to a fixing frame.

[0018] Preferably, one end of the electric push rod is fixedly connected to the hollow tube, a distance sensor is fixedly connected to the screw rod of the electric push rod, one end of the support plate is fixedly connected to the first motor, a threaded rod is fixedly connected to the output shaft of the first motor, a movable block is threadedly connected to the threaded rod, an auxiliary rod is rotatably connected to the top of the movable block, a second motor is fixedly connected to one side of the fixed frame, a fixed seat is rotatably connected to the other side of the fixed frame, the fixed seat is fixedly connected to the output shaft of the second motor, a slider is slidably connected to one side of the fixed frame, and the other end of the auxiliary rod is rotatably connected to the slider.

[0019] Preferably, a first protrusion is provided on one side of the fine grinding and polishing disc, a slope is provided on the top of the fine grinding and polishing disc, a rubber ring is fixed on the slope of the fine grinding and polishing disc by bolts, and a processing pad is provided on the rubber ring.

[0020] Preferably, the debris removal assembly comprises a cleaning frame, a cleaning plate is slidably connected in a slide groove of the cleaning frame, a second spring is arranged between the cleaning frame and the cleaning plate, and a soft brush is arranged at one end of the cleaning plate.

[0021] Preferably, the cleaning frame is fixedly connected to the support seat, a second protrusion is arranged in the middle of the cleaning plate, the second protrusion is located on the rotation track of the first protrusion, the second protrusion is cooperatively connected with the first protrusion, and the processing pad is slidably connected to one side of the soft brush.

[0022] Compared with the prior art, the present invention has at least the following beneficial effects:

[0023] In the above scheme, by setting a switching component and multiple groups of fine grinding and polishing discs, it is convenient to install fine grinding pads or polishing pads of different models. When processing the glass lens, the switching component can be quickly switched to rotate different fine grinding and polishing discs, and the fixed component follows the adjustment, and it is convenient to process glass lenses of different models. When the operator fine grinds and polishes the glass lens, there is no need to replace other equipment or polishing pads according to different models or according to the coarseness and fineness of the polishing sequence, which reduces the preparation time before fine grinding and polishing of the glass lens and improves the efficiency of processing special-shaped aspheric lenses.

[0024] By setting up a debris removal component, while the fine grinding and polishing disc is processing the glass lens, the soft brush can remove the surroundings of the fine grinding and polishing disc, and at the same time, the left and right displacement of the soft brush can change the bristle texture of the contact part between the soft brush and the fine grinding and polishing disc, thereby preventing debris from adhering to the bristle surface, keeping the bristle surface clean, and generating friction with the surface of the polishing pad to facilitate the removal of debris, thereby more comprehensively removing debris from the surface of the fine grinding and polishing disc, and preventing excessive debris from rubbing against the surface of the anisotropic aspheric lens being processed, causing abnormal wear on the surface of the anisotropic aspheric lens during polishing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of the fine grinding and polishing equipment of the present invention;

[0026] Figure 2 A top view of the fine grinding and polishing equipment of the present invention;

[0027] Figure 3 This is a schematic diagram of the mounting frame structure of the present invention;

[0028] Figure 4 This is a schematic diagram of the exploded structure of the switching component of the present invention;

[0029] Figure 5 This is a schematic diagram of the trigger rod structure of the present invention;

[0030] Figure 6 It is a schematic diagram of the structure of the fixing assembly of the present invention;

[0031] Figure 7 This is a schematic diagram of the structure of the position-limiting telescopic rod of the present invention;

[0032] Figure 8 It is a partial structural schematic diagram of the fine grinding and polishing equipment of the present invention;

[0033] Fig. 9 This is a schematic diagram of the structure of the debris removal assembly of the present invention;

[0034] Fig.10 It is a front view of the fine grinding and polishing disc of the present invention;

[0035] Fig.11 This is a schematic diagram of the explosion structure of the fine grinding and polishing disc of the present invention;

[0036] Fig.12 For the present invention Fig.10 Schematic diagram of the structure of A;

[0037] Fig.13 This is a schematic diagram of the system of the present invention.

[0038] In the figure: 1, mounting frame; 11, control box; 2, first cylinder; 3, second cylinder; 4, servo motor; 41, telescopic rod; 5, switching assembly; 51, push plate; 52, hollow tube; 53, switching column; 531, trigger slot; 54, switching rod; 55, trigger rod; 551, first spring; 552, block; 6, fixing assembly; 61, electric push rod; 611, distance sensor; 62, support plate; 621, first motor ; 622, threaded rod; 623, movable block; 624, auxiliary rod; 63, fixed frame; 631, second motor; 632, fixed seat; 633, slider; 7, fine grinding and polishing disk; 71, first protrusion; 711, latch tooth; 72, rubber ring; 73, processing pad; 8, support seat; 9, debris removal assembly; 91, cleaning frame; 911, slide; 92, cleaning plate; 921, second protrusion; 93, second spring; 94, soft brush. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0040] The present invention provides a technical solution: a method for processing a special-shaped aspheric lens, comprising the following steps:

[0041] S1. Select a suitable glass lens and perform preliminary processing on the glass lens so that the shape of the blank meets the requirements;

[0042] S2. Use a grinder to coarsely grind the blank so that the surface roughness and spherical radius of the blank meet the requirements of fine grinding;

[0043] S3, fixing the rough-ground blank on a fine-grinding and polishing device by means of adhesive, and fine-grinding and polishing the blank by means of the fine-grinding and polishing device;

[0044] S4, centering and edge grinding the polished blank to eliminate the eccentricity of the blank and make the radial dimension of the side cylindrical surface of the blank meet the assembly requirements;

[0045] S5. The blank after centering and edge grinding is coated, and the quality of the coated blank is inspected. If the inspection is qualified, the processing of the special-shaped aspheric lens is completed.

[0046] The present invention also provides a technical solution: a fine grinding and polishing device for special-shaped aspheric lenses, the fine grinding and polishing device includes a mounting frame 1, a control box 11 is arranged on one side of the mounting frame 1, a single-chip microcomputer controller is arranged inside the control box 11, a first cylinder 2 is fixedly connected to one side of the control box 11, a second cylinder 3 is fixedly connected to the piston rod of the first cylinder 2, the tops of the first cylinder 2 and the second cylinder 3 are fixedly connected to a switching component 5, the switching component 5 is used to drive different fine grinding and polishing discs 7 to rotate, a servo motor 4 is fixedly screwed on the other side of the mounting frame 1, a group of fine grinding and polishing discs 7 with uniform spacing are arranged between the servo motor 4 and the switching component 5, both sides of the fine grinding and polishing discs 7 are rotatably connected to a support seat 8, and the space between two adjacent support seats 8 The switch assembly 5 is connected by flanges, and the support seats 8 on both sides are fixedly connected to the mounting frame 1 through mounting plates. The switching assembly 5 is fixedly connected with a fixing assembly 6, and the fixing assembly 6 is used to fix the position of the glass lens. The support seat 8 on one side of the fine grinding and polishing disk 7 is fixedly connected with a debris removal assembly 9, and the debris removal assembly 9 is used to clean the fine grinding and polishing disk 7. Specifically, when the operator needs to fine-grind and polish the glass lens, the operator first needs to fix the glass lens on the fixing assembly 6 by adhesive, and then the fixing assembly 6 will move with the glass lens and gradually approach the first fine grinding and polishing disk 7. When the distance sensor 611 detects that the glass lens is attached to the fine grinding and polishing disk 7, the distance sensor 611 will transmit a signal to The single-chip microcomputer controller in the control box 11 will start the servo motor 4 after receiving the signal. When the servo motor 4 rotates, the switching column 53 in the switching component 5 will rotate through the limiting telescopic rod 41. The rotation of the switching column 53 will drive the rotation of the fine grinding and polishing disk 7. When the fine grinding and polishing disk 7 rotates, the glass lens attached to the fine grinding and polishing disk 7 will be finely ground. After the glass lens has been ground for a period of time, the fixing component 6 will take the glass lens away from the fine grinding and polishing disk 7. At this time, the distance sensor 611 will transmit the signal to the single-chip microcomputer controller in the control box 11. At this time, after receiving the signal, the single-chip microcomputer controller will turn off the servo motor 4 to stop the fine grinding and polishing disk 7 from rotating. Then, the first cylinder 2 will extend. And push the switching column 53 to the next fine grinding and polishing disk 7, and cooperate with the fine grinding and polishing disk 7. At this time, the fixing component 6 will bring the glass lens close to the fine grinding and polishing disk 7 again. At this time, the distance sensor 611 will transmit the signal to the single-chip controller in the control box 11. At this time, after receiving the signal, the single-chip controller will start the servo motor 4 and grind the glass lens again. When the glass lens is finely ground three times and approaches the last fine grinding and polishing disk 7 again, since the processing pads 73 on the first three fine grinding and polishing disks 7 are all fine grinding rings, the glass lens can be finely ground. The processing pad 73 on the last fine grinding and polishing disk 7 is a polishing pad, which can polish the glass lens. In the process of the fine grinding and polishing disk 7 processing the glass lens,The debris removal component 9 will clean the debris on the fine grinding and polishing disc 7 to prevent the debris from damaging the glass lens.

[0047] As an alternative implementation, see Figures 3 to 11The switching assembly 5 includes a push plate 51, one side of the push plate 51 is fixedly connected to a hollow tube 52, one end of the hollow tube 52 is rotatably connected to a switching column 53, a switching rod 54 is slidably connected in the hollow tube 52, one end of the switching rod 54 passes through the push plate 51, the other end of the switching rod 54 is located in the switching column 53, a group of trigger rods 55 in an annular array are provided in the switching column 53, one end of the switching rod 54 located in the switching column 53 is provided with a dome, one end of the trigger rod 55 is provided with a dome, a group of domes of the trigger rod 55 are arranged in an annular array around the dome of the switching rod 54, a trigger groove 531 in an annular array is opened on the side of the switching column 53, the trigger rod 55 is slidably connected in the trigger groove 531, the other end of the trigger rod 55 is provided with a card block 552, the card block 5 52 is located in the trigger groove 531, a first spring 551 is arranged between the dome of the trigger rod 55 and the inner wall of the switching column 53, the push plate 51 is fixedly connected to the piston rod of the first cylinder 2, one end of the switching rod 54 is fixedly connected to the piston rod of the second cylinder 3, a rotating groove is provided in the middle of the fine grinding and polishing disk 7, and a latch tooth 711 is arranged on the side wall of the rotating groove of the fine grinding and polishing disk 7, the switching column 53 is rotatably connected in the rotating groove of the fine grinding and polishing disk 7, the clamping block 552 in the trigger rod 55 is matched and connected with the latch tooth 711 of the fine grinding and polishing disk 7, one side of the switching column 53 is fixedly connected to the limited telescopic rod 41, and the other end of the limited telescopic rod 41 is rotatably connected to the output shaft of the servo motor 4. Specifically, when the fine grinding and polishing disk 7 needs to process the glass lens First, the first cylinder 2 will extend and push the push plate 51, so that the switching column 53 moves to the fine grinding and polishing disk 7 at the corresponding position, then the first cylinder 2 stops extending, and the second cylinder 3 starts to extend and push the switching rod 54. When the switching rod 54 moves, the dome of the switching rod 54 will be inserted into the middle of the trigger rod 55 of the annular array. Since the contact parts of the switching rod 54 and the trigger rod 55 are both dome structures, the trigger rod 55 will gradually move outward under the action of the switching rod 54 and extend out from the trigger groove 531 of the switching column 53. When the block 552 of the trigger rod 55 is stuck in the tooth 711 of the fine grinding and polishing disk 7, the second cylinder 3 stops extending. Then, when the fixing component 6 is attached to the fine grinding and polishing disk 7 with the glass lens, , the servo motor 4 starts to rotate, and drives the switching column 53 to rotate through the limiting telescopic rod 41. When the switching column 53 rotates, since the block 552 is inserted in the block tooth 711, the switching column 53 will rotate synchronously with the fine grinding and polishing disk 7, so that the fine grinding and polishing disk 7 processes the glass lens. When the glass lens needs to replace the fine grinding and polishing disk 7, the servo motor 4 stops rotating, and the second cylinder 3 starts to shrink. When the second cylinder 3 shrinks, the switching rod 54 gradually withdraws from the middle position of the trigger rod 55. At this time, due to the reduction of pressure on one side of the trigger rod 55, the compressed first spring 551 will recover and push the trigger rod 55 to move in the opposite direction, so that the block 552 is re-collected into the switching column 53, and then the first cylinder 2 starts to move and moves the push plate 51.The switching column 53 is moved to a suitable position, and a limiting groove is provided between the telescopic rod units on the limiting telescopic rod 41, so that they cannot be rotated and connected to each other during movement.

[0048] As an alternative implementation, see Figures 6 to 8 The fixing assembly 6 includes an electric push rod 61, a screw of the electric push rod 61 is fixedly connected to one side of a support plate 62, one end of the support plate 62 is rotatably connected to a fixing frame 63, one end of the electric push rod 61 is fixedly connected to the hollow tube 52, a distance sensor 611 is fixedly connected to the screw of the electric push rod 61, one end of the support plate 62 is fixedly connected to a first motor 621, a threaded rod 622 is fixedly connected to the output shaft of the first motor 621, a movable block 623 is threadedly connected to the threaded rod 622, an auxiliary rod 624 is rotatably connected to the top of the movable block 623, a second motor 631 is fixedly connected to one side of the fixing frame 63, a fixing seat 632 is rotatably connected to the output shaft of the second motor 631, a slider 633 is slidably connected to one side of the fixing frame 63, and the other end of the auxiliary rod 624 is rotatably connected to the slider 633. Specifically, when the operator passes the glass lens through the adhesive After being glued and fixed on the fixing seat 632, the screw of the electric push rod 61 gradually moves, so that the glass lens can gradually approach the fine grinding and polishing disk 7. When the glass lens is attached to the fine grinding and polishing disk 7, the distance sensor 611 detects a signal and transmits the signal to the single-chip controller, so that the fine grinding and polishing disk 7 starts to rotate. When the fine grinding and polishing disk 7 rotates, the second motor 631 starts to start, so that the glass lens fixed on the fixing seat 632 starts to rotate. At the same time, the first motor 621 starts. Through the forward and reverse rotation of the first motor 621, the movable block 623 threadedly connected to the threaded rod 622 can move left and right on the support plate 62. When the movable block 623 moves left and right, the auxiliary rod 624 can make the fixing frame 63 rotate at one end of the support plate 62. Through the continuous rotation of the fixing frame 63, the contact area between the glass lens and the fine grinding and polishing disk 7 can be increased when being processed, thereby improving the processing efficiency.

[0049] As an alternative implementation, see Figures 8 to 12A first protrusion 71 is provided on one side of the fine grinding and polishing disc 7, a bevel is provided on the top of the fine grinding and polishing disc 7, a rubber ring 72 is fixed on the bevel of the fine grinding and polishing disc 7 by bolts, a processing pad 73 is provided on the rubber ring 72, and the mesh number of the processing pad 73 on a group of fine grinding and polishing discs 7 increases successively, the debris removal assembly 9 includes a cleaning frame 91, a cleaning plate 92 is slidably connected in a slide groove 911 of the cleaning frame 91, a second spring 93 is provided between the cleaning frame 91 and the cleaning plate 92, and a soft The brush 94 and the cleaning frame 91 are fixedly connected to the support seat 8. A second protrusion 921 is arranged in the middle of the cleaning plate 92. The second protrusion 921 is located on the rotation track of the first protrusion 71. The second protrusion 921 is matched and connected with the first protrusion 71. The processing pad 73 is slidably connected to one side of the soft brush 94. Specifically, when the fine grinding and polishing disc 7 processes the glass lens, the processing pad 73 in the fine grinding and polishing disc 7 will continuously grind the glass lens. During the grinding process, the debris on the glass lens will be stuck. On the processing pad 73, the processing pad 73 with debris on it will rub against the soft brush 94 during the rotation process. At this time, the soft brush 94 will clean the processing pad 73 to remove the debris on its surface. As the fine grinding and polishing disc 7 rotates, the first protrusion 71 will squeeze the second protrusion 921, and the second protrusion 921 will move along the surface of the first protrusion 71. At this time, the cleaning plate 92 will move in the slide groove 911 and squeeze the second spring 93 at the same time. When the cleaning plate 92 moves, the soft brush 94 will 3, and changes the position of the soft brush 94 and the processing pad 73. When the first protrusion 71 and the second protrusion 921 are separated, the compressed second spring 93 will restore the cleaning plate 92 to the initial position, and the soft brush 94 will also restore to the initial position at this time. However, since the soft brush 94 moves on the processing pad 73, the angle of the bristles on the soft brush 94 will change. By continuously moving the soft brush 94, the state of the bristles on the soft brush 94 can be changed, thereby avoiding the reduction of the cleaning ability of the soft brush 94.

[0050] The working principle provided by the present invention is as follows: when the operator needs to use the fine grinding and polishing disk 7 to process the glass lens, first, the first cylinder 2 will extend and push the push plate 51, so that the switching column 53 moves to the fine grinding and polishing disk 7 at the corresponding position, then the first cylinder 2 stops extending, and the second cylinder 3 starts to extend and push the switching rod 54. When the switching rod 54 moves, the dome of the switching rod 54 will be inserted into the middle of the triggering rod 55 of the annular array. Since the contact parts of the switching rod 54 and the triggering rod 55 are both dome structures, the triggering rod 55 will gradually move outward under the action of the switching rod 54 and extend out from the triggering groove 531 of the switching column 53. When the block 552 of the triggering rod 55 is stuck in the tooth 711 of the fine grinding and polishing disk 7, this When the second cylinder 3 stops extending, then when the fixing assembly 6 with the glass lens is attached to the fine grinding and polishing disk 7, the servo motor 4 starts to rotate and drives the switching column 53 to rotate through the limiting telescopic rod 41. When the switching column 53 rotates, since the clamping block 552 is inserted in the clamping tooth 711, the switching column 53 will rotate synchronously with the fine grinding and polishing disk 7, so that the fine grinding and polishing disk 7 processes the glass lens. When the glass lens needs to replace the fine grinding and polishing disk 7, the servo motor 4 stops rotating and the second cylinder 3 starts to shrink. When the second cylinder 3 shrinks, the switching rod 54 gradually withdraws from the middle position of the trigger rod 55. At this time, due to the reduction of pressure on one side of the trigger rod 55, the compressed first spring 551 will recover and push the trigger rod 55 to move in the opposite direction, so that the clamping block 552 is inserted in the clamping tooth 711. The block 552 is re-collected into the switching column 53, and then the first cylinder 2 starts to move, moving the push plate 51 to move the switching column 53 to a suitable position. A limiting groove is set between the telescopic rod units on the limiting telescopic rod 41, and they cannot be rotatably connected to each other during movement. When the glass lens is attached to the fine grinding and polishing disc 7, the distance sensor 611 detects a signal and transmits the signal to the single-chip controller, so that the fine grinding and polishing disc 7 starts to rotate. When the fine grinding and polishing disc 7 rotates, the second motor 631 starts to start, so that the glass lens fixed on the fixing seat 632 starts to rotate. At the same time, the first motor 621 starts, and the movable block 623 threaded on the threaded rod 622 is threaded through the forward and reverse rotation of the first motor 621. It can move left and right on the support plate 62. When the movable block 623 moves left and right, the auxiliary rod 624 can make the fixing frame 63 rotate at one end of the support plate 62. Through the continuous rotation of the fixing frame 63, the contact area between the glass lens and the fine grinding and polishing disc 7 can be increased when the glass lens is processed, thereby improving the processing efficiency. When the fine grinding and polishing disc 7 processes the glass lens, the processing pad 73 in the fine grinding and polishing disc 7 will continuously grind the glass lens. During the grinding process, the debris on the glass lens will be adhered to the processing pad 73. The processing pad 73 with the debris will rub against the soft brush 94 during the rotation process. At this time, the soft brush 94 will clean the processing pad 73 to remove the debris on its surface. As the fine grinding and polishing disc 7 rotates,The first protrusion 71 will squeeze the second protrusion 921, and the second protrusion 921 will move along the surface of the first protrusion 71. At this time, the cleaning plate 92 will move in the slide groove 911 and squeeze the second spring 93 at the same time. When the cleaning plate 92 moves, the soft brush 94 will move on the processing pad 73 and change the position of the soft brush 94 and the processing pad 73. When the first protrusion 71 and the second protrusion 921 are separated, the compressed second spring 93 will restore the cleaning plate 92 to the initial position, and the soft brush 94 will also restore to the initial position at this time. However, since the soft brush 94 moves on the processing pad 73, the angle of the bristles on the soft brush 94 will change. By continuously moving the soft brush 94, the state of the bristles on the soft brush 94 can be changed, and the cleaning range of the soft brush 94 can be increased. At the same time, it does not affect polishing, and avoids excessive debris causing abnormal wear on the surface of the anisotropic aspheric lens during polishing;

[0051] When the staff needs to replace the processing pad 73, they can remove the screws on the sides of the fine grinding and polishing disk 7 and the rubber ring 72, peel off the rubber ring 72 and the processing pad 73 from the removed fine grinding and polishing disk 7, and then put the new processing pad 73 on the surface of the rubber ring 72. The surface of the rubber ring 72 is provided with a corresponding groove, and the inner ring of the rubber ring 72 is a bevel and the outer ring of the fine grinding and polishing disk 7 has a bevel at the same angle. The rubber ring 72 and the processing pad 73 are directly pushed onto the outer ring of the fine grinding and polishing disk 7, and then the screw is fixed to quickly replace the processing pad 73.

[0052] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. In the description of the present invention, unless otherwise specified, "multiple" means two or more; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fine grinding and polishing device for special-shaped aspheric lenses, characterized in that: The invention comprises a mounting frame (1), a control box (11) is arranged on one side of the mounting frame (1), a single-chip microcomputer controller is arranged inside the control box (11), a first cylinder (2) is fixedly connected to one side of the control box (11), a second cylinder (3) is fixedly connected to the piston rod of the first cylinder (2), the tops of the first cylinder (2) and the second cylinder (3) are fixedly connected to a switching component (5), the switching component (5) is used to drive different fine grinding and polishing discs (7) to rotate, and a servo motor (4) is fixedly screwed to the other side of the mounting frame (1), the servo motor (4) and the switching component ( 5), a group of fine grinding and polishing discs (7) with uniform intervals are arranged between the fine grinding and polishing discs (7), both sides of the fine grinding and polishing discs (7) are rotatably connected to the support seats (8), two adjacent support seats (8) are connected via flanges, the support seats (8) located on both sides are fixedly connected to the mounting frame (1) via mounting plates, the switching assembly (5) is fixedly connected to a fixing assembly (6), the fixing assembly (6) is used to fix the position of the glass lens, and the support seat (8) located on one side of the fine grinding and polishing disc (7) is fixedly connected to a debris removal assembly (9), the debris removal assembly (9) is used to clean the fine grinding and polishing disc (7); The switching assembly (5) comprises a push plate (51), one side of the push plate (51) is fixedly connected to a hollow tube (52), one end of the hollow tube (52) is rotatably connected to a switching column (53), a switching rod (54) is slidably connected in the hollow tube (52), one end of the switching rod (54) passes through the push plate (51), the other end of the switching rod (54) is located in the switching column (53), and a group of trigger rods (55) in an annular array are arranged in the switching column (53); One end of the switch rod (54) located in the switch column (53) is provided with a dome, one end of the trigger rod (55) is provided with a dome, a group of domes of the trigger rod (55) are arranged in a circular array around the dome of the switch rod (54), a side surface of the switch column (53) is provided with a trigger groove (531) in a circular array, the trigger rod (55) is slidably connected in the trigger groove (531), the other end of the trigger rod (55) is provided with a block (552), the block (552) is located in the trigger groove (531), and a first spring (551) is arranged between the dome of the trigger rod (55) and the inner wall of the switch column (53); The push plate (51) is fixedly connected to the piston rod of the first cylinder (2); one end of the switch rod (54) is fixedly connected to the piston rod of the second cylinder (3); a rotation groove is provided in the middle of the fine grinding and polishing disc (7); a latching tooth (711) is provided on the side wall of the rotation groove of the fine grinding and polishing disc (7); the switch column (53) is rotatably connected to the rotation groove of the fine grinding and polishing disc (7); the latching block (552) in the trigger rod (55) is matched and connected to the latching tooth (711) of the fine grinding and polishing disc (7); one side of the switch column (53) is fixedly connected to a limited telescopic rod (41); the other end of the limited telescopic rod (41) is rotatably connected to the output shaft of the servo motor (4); The fixing assembly (6) comprises an electric push rod (61), a screw of the electric push rod (61) being fixedly connected to one side of a support plate (62), and one end of the support plate (62) being rotatably connected to a fixing frame (63); One end of the electric push rod (61) is fixedly connected to the hollow tube (52); a distance sensor (611) is fixedly connected to the screw rod of the electric push rod (61); one end of the support plate (62) is fixedly connected to the first motor (621); a threaded rod (622) is fixedly connected to the output shaft of the first motor (621); a movable block (623) is threadedly connected to the threaded rod (622); an auxiliary rod (624) is rotatably connected to the top of the movable block (623); a second motor (631) is fixedly connected to one side of the fixing frame (63); a fixing seat (632) is rotatably connected to the other side of the fixing frame (63); the fixing seat (632) is fixedly connected to the output shaft of the second motor (631); a slider (633) is slidably connected to one side of the fixing frame (63); and the other end of the auxiliary rod (624) is rotatably connected to the slider (633).

2. The fine grinding and polishing equipment for special-shaped aspheric lenses according to claim 1, characterized in that: A first protrusion (71) is provided on one side of the fine grinding and polishing disc (7), a slope is provided on the top of the fine grinding and polishing disc (7), a rubber ring (72) is fixed on the slope of the fine grinding and polishing disc (7) by means of bolts, and a processing pad (73) is provided on the rubber ring (72).

3. The fine grinding and polishing equipment for special-shaped aspheric lenses according to claim 2, characterized in that: The debris removal assembly (9) comprises a cleaning frame (91), a cleaning plate (92) being slidably connected in a slide groove (911) of the cleaning frame (91), a second spring (93) being arranged between the cleaning frame (91) and the cleaning plate (92), and a soft brush (94) being arranged at one end of the cleaning plate (92).

4. The fine grinding and polishing equipment for special-shaped aspheric lenses according to claim 3, characterized in that: The cleaning frame (91) is fixedly connected to the support seat (8); a second protrusion (921) is provided in the middle of the cleaning plate (92); the second protrusion (921) is located on the rotation track of the first protrusion (71); the second protrusion (921) is matched and connected to the first protrusion (71); and the processing pad (73) is slidably connected to one side of the soft brush (94).

5. The processing method of the fine grinding and polishing equipment of a special-shaped aspheric lens according to any one of claims 1 to 4, characterized in that: The processing method comprises the following steps: S1. Select a suitable glass lens and perform preliminary processing on the glass lens so that the shape of the blank meets the requirements; S2. Use a grinder to coarsely grind the blank so that the surface roughness and spherical radius of the blank meet the requirements of fine grinding; S3, fixing the rough-ground blank on a fine-grinding and polishing device by means of adhesive, and fine-grinding and polishing the blank by means of the fine-grinding and polishing device; S4, centering and edge grinding the polished blank to eliminate the eccentricity of the blank and make the radial dimension of the side cylindrical surface of the blank meet the assembly requirements; S5. The blank after centering and edge grinding is coated, and the quality of the coated blank is inspected. If the inspection is qualified, the processing of the special-shaped aspheric lens is completed.

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