Accurate grinding device for optical lens

Abstract

The invention discloses a fine grinding device for optical lenses, which belongs to the technical field of lens processing and comprises a fine grinder and a base, and a spindle and a grinding wheel are assembled at the top of the fine grinder. According to the accurate grinding device for the optical lens, the output end of the second driving motor is started to drive the whole bearing frame to longitudinally rotate, at the moment, the two sides of the bearing frame are rotationally connected with the two ends of the rotating shaft, and therefore the whole support can be driven to synchronously rotate along with longitudinal rotation of the bearing frame; the chuck fixedly connected with the top of the support and the to-be-accurately-ground lens clamped on the chuck are driven to rotate with the sliding rings at the bottoms of the two supporting rods as fulcrums, longitudinal rotation of the lens is achieved, longitudinal adjustment of the lens is achieved, the adjustment time of the main shaft and the grinding wheel is shortened, and the grinding efficiency is improved. And the machining precision and the machining range of the optical lens accurate grinding device can be improved by adjusting the angle of the lens in time, the flexibility and the operation convenience of mirror surface machining are improved, and the accurate grinding machining process of the lens is more convenient and efficient.

Description

Technical Field

[0001] The invention belongs to the technical field of lens processing, and in particular relates to a fine grinding device for optical lenses. Background Art

[0002] An optical lens is a plastic or glass container made of multiple aspherical concentrators with different reflectivity. It generally has multiple layers, each with a specific reflectivity, which can refract and reflect external electromagnetic waves to achieve object imaging. Optical lenses can generally be divided into round spherical lenses, hyperbolic lenses (hypercurvature lenses), parabolic lenses and plane lenses. Its working principle mainly depends on the refraction and reflection of the surface. When light passes through the lens, due to the difference in reflectivity, a special focus will be formed, which can achieve the refraction and reflection of light, compress or expand light, and achieve the focusing and diffusion effect of light. As an important optical component, optical lenses play an irreplaceable role in optical instruments, photography and videography, medical equipment, laser processing, optical communications and other fields.

[0003] The processing technology of optical lenses usually includes the steps of forming, fine grinding, polishing, inspection and coating. Forming is to install a flat glass disc or a similar cast lens blank in a chuck rotating around the mechanical center of the glass disc, and use a ring tool with embedded diamonds to remove the blank material and grind the upper surface of the blank. This process forms a spherical shape on the lens blank and roughly grinds the surface. However, there are often large errors and scratches on the lens surface after rough grinding. These defects will affect the light transmittance and imaging quality of the lens. At this time, fine grinding is needed to further refine the lens surface, reduce errors and scratches, and make the lens surface flatter and smoother. During fine grinding, the spindle is used to grind the lens surface. The grinding wheel on the grinding disc processes the lens fixed on the grinding disc. Since the processing process often involves processing requirements of various shapes, sizes and angles, especially the spherical lens has more stringent requirements on the fine grinding angle. Therefore, when the lens is fixed and the mirror angle cannot be directly adjusted, the main shaft and the grinding wheel of the fine grinder can only be frequently displaced and rotated to compensate for the angle deviation to adapt the mirror for processing. This will increase the adjustment time and reduce the processing efficiency. At the same time, if the mirror angle cannot be adjusted, the processing range of the mirror will be limited, making it impossible to process some complex spherical shapes, reducing the flexibility and convenience of mirror processing, and making the fine grinding process more complicated and difficult. In this regard, an optical lens fine grinding device is proposed for improvement. Summary of the invention

[0004] The purpose of the present invention is to provide a fine grinding device for optical lenses, aiming to solve the above-mentioned problems existing in the prior art.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: An optical lens fine grinding device comprises a fine grinder and a base, wherein the top of the fine grinder is equipped with a spindle and a grinding wheel, and the upper end surface of the base is fixedly mounted with two mounting plates, a worm is rotatably arranged between the two mounting plates, and sleeves are integrally arranged on the outer facades of the two mounting plates; The first drive motor and the second drive motor are fixedly mounted at both ends of the base, respectively. A bearing frame is also mounted on the base. Support rods are integrally provided at both ends of the bearing frame. A slip ring is fixedly connected to the bottom of the support rod. A worm wheel is rotatably arranged in the middle of the carrier frame, a rotating shaft is arranged in the middle of the worm wheel, brackets are fixedly connected at both ends of the rotating shaft, and a chuck is fixedly installed at the top of the bracket.

[0006] In a preferred embodiment of the present invention, the output end of the first driving motor passes through the mounting plate and remains fixedly connected to the worm.

[0007] In a preferred embodiment of the present invention, a slip ring is provided at the bottom of the support rod and is respectively sleeved with the two sleeves.

[0008] In a preferred embodiment of the present invention, the output end of the second driving motor is fixedly connected to one of the support rods.

[0009] In a preferred embodiment of the present invention, the helical lines of the worm and the worm wheel have the same hand direction and are meshed.

[0010] In a preferred embodiment of the present invention, the rotating shaft passes through both sides of the supporting frame and maintains a rotational connection.

[0011] In a preferred embodiment of the present invention, the output end of the first drive motor, the worm, and the output end of the second drive motor are in the same horizontal straight line direction.

[0012] In a preferred embodiment of the present invention, the lens to be finely ground is clamped on the chuck, and the first drive motor and the second drive motor are both equipped with holding brakes.

[0013] In a preferred embodiment of the present invention, the rotation radius of the bracket is greater than half the length of the supporting frame.

[0014] In a preferred embodiment of the present invention, the length of the support rod is greater than the distance between the lower end surface of the support frame and the upper end surface of the mounting plate.

[0015] In general, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects: The optical lens fine grinding device of the present invention, when it is necessary to adjust the lens angle, drives the worm wheel to rotate along with the rotation of the worm through the output end of the first driving motor, and because the worm wheel is arranged in the support frame and maintains rotation connection through the rotating shaft, drives the chuck and the lens to be fine ground clamped on the chuck to rotate around the rotating shaft, thereby realizing the lateral rotation of the lens and achieving the lateral adjustment of the lens; the output end of the second driving motor can also be started to drive the support frame as a whole to rotate longitudinally, and at this time, the two sides of the support frame are maintained in rotation connection with the two ends of the rotating shaft, so that the support frame as a whole will be driven to rotate synchronously with the longitudinal rotation of the support frame, thereby driving the support frame to rotate synchronously ... The chuck fixedly connected to the top of the frame and the lens to be fine-ground clamped on the chuck rotate with the slip rings at the bottom of the two support rods as the fulcrum, thereby realizing the longitudinal rotation of the lens and achieving the longitudinal adjustment of the lens. Finally, with the lateral rotation adjustment and longitudinal rotation adjustment of the lens, multi-angle adjustment of the lens is realized, so that the lens can be adapted to the main shaft and grinding wheel for processing of more complex shapes and sizes, reducing the adjustment time of the main shaft and grinding wheel, and improving the processing accuracy and processing range of the optical lens fine-grinding device by timely adjusting the lens angle, thereby improving the flexibility of mirror processing and the convenience of operation, and making the lens fine-grinding process more convenient and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the main structure of the present invention; Figure 3 It is a side view structural schematic diagram of the present invention; Figure 4 This is a schematic diagram of the base structure of the present invention; Figure 5 This is a schematic diagram of the main structure of the base of the present invention; Figure 6 It is a schematic diagram of the disassembled structure of the base of the present invention.

[0017] In all the drawings, the same figure numbers represent the same technical features, specifically: 1. fine grinder; 2. base; 3. main shaft; 4. grinding wheel; 5. first drive motor; 6. second drive motor; 7. mounting plate; 8. worm; 9. sleeve; 10. carrier frame; 11. support rod; 12. worm wheel; 13. bracket; 14. rotating shaft; 15. chuck. DETAILED DESCRIPTION

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be briefly introduced below in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0019] Example: like Figure 1-6 As shown, this embodiment provides a fine grinding device for optical lenses, including a fine grinder 1 and a base 2. A spindle 3 and a grinding wheel 4 are mounted on the top of the fine grinder 1. Two mounting plates 7 are fixedly mounted on the upper end surface of the base 2. A worm 8 is rotatably arranged between the two mounting plates 7. The outer surfaces of the two mounting plates 7 are integrally provided with sleeves 9. The first drive motor 5 and the second drive motor 6 are fixedly mounted at both ends of the base 2, and a carrier frame 10 is also mounted on the base 2. Both ends of the carrier frame 10 are integrally provided with support rods 11, and the bottom of the support rod 11 is also fixedly connected with a slip ring; A worm gear 12 is rotatably provided in the middle of the carrier 10 , a rotating shaft 14 is provided in the middle of the worm gear 12 , brackets 13 are fixedly connected to both ends of the rotating shaft 14 , and a chuck 15 is fixedly installed on the top of the bracket 13 .

[0020] In a specific application scenario, when the lens angle needs to be adjusted, the output end of the first driving motor 5 drives the worm wheel 12 to rotate along with the rotation of the worm 8. Since the worm wheel 12 is arranged in the carrier 10 and is connected to the rotation shaft 14, the chuck 15 and the lens to be finely ground held on the chuck 15 are driven to rotate around the rotation shaft 14, thereby realizing the lateral rotation of the lens and achieving the lateral adjustment of the lens. The output end of the second driving motor 6 can also be started to drive the carrier 10 to rotate longitudinally as a whole. At this time, the carrier 10 The two sides are rotatably connected to the two ends of the rotating shaft 14, so that the bracket 13 as a whole will rotate synchronously with the longitudinal rotation of the carrier 10, and then the chuck 15 fixedly connected to the top of the bracket 13 and the lens to be finely ground clamped on the chuck 15 will rotate with the slip ring at the bottom of the two support rods 11 as the fulcrum, so as to realize the longitudinal rotation of the lens and achieve the longitudinal adjustment of the lens. Finally, with the lateral rotation adjustment and longitudinal rotation adjustment of the lens, the multi-angle adjustment of the lens can be realized, so that the lens can be adapted to the main shaft 3 and the grinding wheel 4 to be processed in more complex shapes and sizes. The fine grinding device of the optical lens of the present invention is further described below in combination with this application scenario.

[0021] Further, refer to Figure 1-6 The output end of the first driving motor 5 passes through the mounting plate 7 and is fixedly connected to the worm 8 .

[0022] In the present embodiment, during the fine grinding process of the optical lens fine grinding device on the lens, in order to rotationally drive the worm 8, the output end of the first drive motor 5 is arranged to pass through the mounting plate 7 and maintain a fixed connection with the worm 8, so that when the first drive motor 5 starts to rotate, the worm 8 is driven to rotate synchronously, and then the worm 8 provides stable transmission for subsequent fine grinding operations to maintain a stable operating state.

[0023] For more details, see Figure 1-6 The slip rings provided at the bottom of the support rod 11 are respectively sleeved with the two sleeves 9.

[0024] In the present embodiment, during the fine grinding process of the optical lens fine grinding device on the lens, in order to maintain the overall mobility of the carrier frame 10 while stably supporting the carrier frame 10, the slip rings provided at the bottom of the support rod 11 are respectively sleeved with the two sleeves 9, so that the support rod 11 maintains a rotational connection with the sleeve 9 through the slip ring, so that the carrier frame 10 is stably supported and rotated with the two sleeves 9 as fulcrums, so that the carrier frame 10 maintains rotational stability.

[0025] More preferably, referring to Figure 1-6 , the output end of the second driving motor 6 is fixedly connected to one of the support rods 11.

[0026] In the present embodiment, during the fine grinding process of the optical lens by the fine grinding device, since the two ends of the carrier frame 10 are rotationally connected with the sleeve 9 through the support rod 11 and the slip ring arranged at the bottom of the support rod 11, the carrier frame 10 can be rotated. However, at this time, the carrier frame 10 itself cannot be driven in an independent state, and it cannot rotate without power. For this reason, the output end of the second drive motor 6 is arranged to be fixedly connected with one of the support rods 11, so that the output end of the second drive motor 6 and the carrier frame 10 are kept integrally through the support rod 11. Then, when the second drive motor 6 is rotating, the support rod 11 and the carrier frame 10 are driven to rotate through the output end of the second drive motor 6, thereby realizing stable rotation drive of the carrier frame 10.

[0027] More preferably, referring to Figure 1-6 , the helical directions of the worm 8 and the worm wheel 12 are the same and remain meshed.

[0028] In the present embodiment, during the fine grinding process of the optical lens fine grinding device on the lens, in order to convert the rotation of the worm 8 into the rotational power to drive the worm wheel 12, the helical lines of the worm 8 and the worm wheel 12 are arranged to have the same rotation direction and keep meshing, thereby forming a stable worm gear transmission between the worm 8 and the worm wheel 12, and then when the worm 8 rotates, the worm wheel 12 is driven to rotate synchronously through the meshing with the worm wheel 12, thereby ensuring the normal operation and high efficiency of the worm wheel 12.

[0029] Furthermore, refer to Figure 1-6 The rotating shaft 14 passes through both sides of the supporting frame 10 and maintains a rotation connection.

[0030] In the present embodiment, during the process of fine grinding of the lens by the optical lens fine grinding device, when the worm wheel 12 drives the worm wheel 12 to rotate synchronously by meshing with the worm wheel 12, in order to make the rotation of the worm wheel 12 drive the bracket 13 to rotate as a whole, a rotating shaft 14 is set to pass through both sides of the carrier 10 and maintain a rotational connection, and the two ends of the rotating shaft 14 are also fixedly connected to the bracket 13. Therefore, when the worm wheel 12 rotates, it will rotate around the rotating shaft 14 as the axis, driving the bracket 13 to rotate as a whole with the worm wheel 12, and then drive the bracket 13 and the chuck 15 fixedly connected to the bracket 13 to rotate synchronously, so that the lens clamped on the chuck 15 can be adjusted laterally by the rotation of the bracket 13, so as to adapt to the main shaft 3 and grinding wheel 4 of the optical lens fine grinding device to perform multi-angle mirror processing, thereby improving the processing range and processing efficiency of the optical lens fine grinding device.

[0031] Furthermore, refer to Figure 1-6 The output end of the first drive motor 5 and the output ends of the worm 8 and the second drive motor 6 are in the same horizontal straight line direction.

[0032] In the present embodiment, during the fine grinding process of the optical lens by the fine grinding device, in order to maintain the stable rotation of the carrier frame 10, the output end of the first drive motor 5 and the output end of the worm 8 and the second drive motor 6 are arranged in the same horizontal straight line direction, so that the slip rings of the support rods 11 at both ends of the carrier frame 10 can be respectively sleeved on the sleeve 9 while maintaining stable rotation, thereby avoiding the rotation jam of the carrier frame 10 caused by the two sleeves 9 not being in the same horizontal straight line.

[0033] Furthermore, refer to Figure 1-6 The chuck 15 holds the lens to be finely ground, and the first drive motor 5 and the second drive motor 6 are both equipped with a holding brake.

[0034] In the present embodiment, during the fine grinding process of the optical lens fine grinding device on the lens, in order to enable the first drive motor 5 and the second drive motor 6 in a stationary state to still maintain the braking of the worm 8 and the carrier 10, the first drive motor 5 and the second drive motor 6 are both equipped with a holding brake, thereby keeping the chuck 15 in a fixed state in a stationary state, so that the lens clamped on the chuck 15 can more stably accept the fine grinding process of the spindle 3 and the grinding wheel 4.

[0035] Furthermore, refer to Figure 1-6 , the rotation radius of the bracket 13 is greater than half the length of the carrier 10.

[0036] In the present embodiment, during the fine grinding process of the optical lens fine grinding device on the lens, in order to maintain the lateral rotation freedom of the chuck 15, the rotation radius of the bracket 13 is set to be greater than half the length of the carrier frame 10, thereby avoiding the bracket 13 from colliding with the two ends of the carrier frame 10 during the rotation of the chuck 15, causing jamming and affecting the lateral rotation angle adjustment of the chuck 15.

[0037] More specifically, see Figure 1-6 The length of the support rod 11 is greater than the distance between the lower end surface of the carrier frame 10 and the upper end surface of the mounting plate 7.

[0038] In the present embodiment, during the fine grinding process of the lens by the optical lens fine grinding device, since the longitudinal rotation adjustment of the chuck 15 and the lens will drive the carrier frame 10 to rotate with the two sleeves 9 as fulcrums, in order to avoid rotation jamming of the carrier frame 10, the length of the support rod 11 is set to be greater than the distance between the lower end face of the carrier frame 10 and the upper end face of the mounting plate 7, and sufficient rotation clearance is reserved to keep the rotation of the carrier frame 10 independent.

[0039] Working principle: In the process of fine grinding of the optical lens of the present invention, the lens is first clamped by the chuck 15, and the first drive motor 5 and the second drive motor 6 in the static state are braked by the holding brakes installed thereon, so that the chuck 15 remains in a fixed state, and then the main shaft 3 and the grinding wheel 4 installed on the top of the fine grinder 1 are used to perform fine grinding, so as to grind the surface of the lens and make the surface of the lens smoother. When the lens angle needs to be adjusted, the first drive motor 5 is started to perform a rotational driving operation, thereby driving the worm 8 fixedly connected to the output end of the first drive motor 5 to rotate synchronously, and the spiral lines of the worm 8 and the worm wheel 12 have the same rotation direction and remain in meshing, so that a stable worm gear transmission is formed between the worm 8 and the worm wheel 12, thereby driving the worm wheel 12 to rotate with the rotation of the worm 8. Since the worm wheel 12 is arranged in the carrier 10 and is rotationally connected through the rotating shaft 14, and the two ends of the rotating shaft 14 are also fixedly connected with the bracket 13, the rotation of the worm wheel 12 will drive the bracket 13 to rotate as a whole, and the top of the bracket 13 is rotationally connected to the chuck 15, so the chuck 15 and the lens to be finely ground clamped on the chuck 15 will be driven to rotate around the rotating shaft 14 as the axis, thereby realizing the lateral rotation of the lens and achieving lateral adjustment of the lens; At the same time, the second driving motor 6 can be started to rotate, thereby driving the support rod 11 fixedly connected to the output end of the second driving motor 6 to rotate, and the support rod 11 is integrated with the carrier 10, and the bottoms of the two supporting rods 11 are respectively provided with slip rings that are sleeved with the two sleeves 9 to maintain a rotational connection, thereby driving the carrier 10 as a whole to rotate with the slip rings at the bottom of the two supporting rods 11 as a fulcrum, and driving the carrier 10 as a whole to rotate longitudinally. At this time, the two sides of the carrier 10 are rotationally connected to the two ends of the rotating shaft 14, so that the bracket 13 as a whole will be driven to rotate synchronously with the longitudinal rotation of the carrier 10, and then the chuck 15 fixedly connected to the top of the bracket 13 and the lens to be finely ground clamped on the chuck 15 are driven to rotate with the slip rings at the bottom of the two supporting rods 11 as a fulcrum, to realize the longitudinal rotation of the lens, to achieve the longitudinal adjustment of the lens, and finally with the lateral rotation adjustment and longitudinal rotation adjustment of the lens, the multi-angle adjustment of the lens is realized, so that the lens can be adapted to the spindle 3 and the grinding wheel 4 for more complex shapes and sizes for processing, thereby improving the processing accuracy and processing range.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fine grinding device for optical lenses, comprising a fine grinding machine (1) and a base (2), wherein the top of the fine grinding machine (1) is equipped with a spindle (3) and a grinding wheel (4), characterized in that : Two mounting plates (7) are fixedly mounted on the upper end surface of the base (2), a worm (8) is rotatably arranged between the two mounting plates (7), and sleeves (9) are integrally arranged on the outer surfaces of the two mounting plates (7); A first drive motor (5) and a second drive motor (6) are fixedly mounted on both ends of the base (2), and a support frame (10) is also mounted on the base (2). Support rods (11) are integrally provided at both ends of the support frame (10), and a slip ring is fixedly connected to the bottom of the support rod (11); A worm gear (12) is rotatably provided in the middle of the carrier (10), a rotating shaft (14) is provided in the middle of the worm gear (12), both ends of the rotating shaft (14) are fixedly connected to brackets (13), and a chuck (15) is fixedly installed at the top of the bracket (13).

2. The fine grinding device for optical lenses according to claim 1, characterized in that: The output end of the first drive motor (5) passes through the mounting plate (7) and remains fixedly connected to the worm (8).

3. The fine grinding device for optical lenses according to claim 1, characterized in that: The sliding ring provided at the bottom of the support rod (11) is respectively sleeved with the two sleeves (9).

4. The fine grinding device for optical lenses according to claim 1, characterized in that: The output end of the second drive motor (6) is fixedly connected to one of the support rods (11).

5. The fine grinding device for optical lenses according to claim 1, characterized in that: The helical lines of the worm (8) and the worm wheel (12) have the same direction of rotation and remain meshed.

6. The fine grinding device for optical lenses according to claim 1, characterized in that: The rotating shaft (14) passes through both sides of the supporting frame (10) and maintains a rotational connection.

7. The fine grinding device for optical lenses according to claim 1, characterized in that: The output end of the first drive motor (5) and the output end of the worm (8) and the output end of the second drive motor (6) are located in the same horizontal straight line direction.

8. The fine grinding device for optical lenses according to claim 1, characterized in that: The chuck (15) holds a lens to be finely ground, and both the first drive motor (5) and the second drive motor (6) are equipped with a holding brake.

9. The fine grinding device for optical lenses according to claim 1, characterized in that: The rotation radius of the bracket (13) is greater than half the length of the supporting frame (10).

10. The fine grinding device for optical lenses according to claim 1, characterized in that: The length of the support rod (11) is greater than the distance between the lower end surface of the support frame (10) and the upper end surface of the mounting plate (7).

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