An aspherical lens ultra-precision grinding device for infrared material

Abstract

The present application relates to the technical field of aspheric lens grinding processing, and particularly relates to an ultra-precision grinding device for aspheric lenses of infrared materials, comprising a grinding machine body, a fixed seat is fixedly arranged in the grinding machine body, a rotating frame is rotatably arranged on the fixed seat, an automatic unloading mechanism is slidingly arranged on the rotating frame, a cover is slidingly arranged on the fixed seat, and a machine cover is rotatably arranged on the grinding machine body. After the aspheric lens is ground, a vacuum pump is used to generate negative pressure to adsorb and take down the aspheric lens, and the aspheric lens is placed on an aspheric lens placing seat. The device replaces the traditional manual operation of taking out the lens, and the automatic taking and placing of the lens can reduce the errors and potential damage caused by manual intervention, and can continuously and efficiently work in a high-yield environment, avoid human fatigue, effectively improve the production efficiency of the aspheric lens, ensure the processing precision, and reduce the influence of human factors on the product quality.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aspheric lens grinding processing, and particularly relates to an ultra-precision grinding device for aspheric lenses of infrared materials. BACKGROUND

[0002] Aspheric lenses of infrared materials play an important role in infrared optical systems, especially in situations that require high precision focusing and small optical system volume. The design and manufacture of aspheric lenses are more complex than that of spherical lenses, but they can effectively reduce optical distortion and improve image quality. Here are some detailed information about aspheric lenses of infrared materials.

[0003] Aspheric lenses are lenses whose surface shape does not satisfy the geometry of a sphere. The surface of an aspheric lens can be accurately described by a mathematical formula, and is usually used to solve the problem of spherical aberration, such as spherical aberration, chromatic aberration, etc. Aspheric lenses have good optical performance, can provide higher image quality and more compact design, and are widely used in precision optical instruments, infrared imaging, laser systems, etc.

[0004] Ultra-precision grinding processing is one of the key technologies for manufacturing aspheric lenses of infrared materials. Due to the very high surface quality and shape precision requirements of infrared lenses, especially at the wavelength level, ultra-precision grinding technology can meet these strict requirements.

[0005] The prior art document with publication number CN216029908U provides an ultra-precision grinding device for aspheric lenses of infrared materials. Through the setting of the first motor and the second motor, the user can realize multi-directional rotation of the rotating disc by setting the first motor and the second motor, thereby solving the problem that the existing processing device needs to be coordinated by multiple shafts to complete the precision machining of the workpiece, and thus the user's use pressure can be greatly relieved.

[0006] After the aspheric lens is ground and processed by the prior art, it needs to be manually removed. The time required for manual removal and placement of the workpiece will significantly increase the processing time of each workpiece. In the case of large production batches, manual removal of the workpiece will become a production bottleneck, reducing overall production efficiency.

[0007] In summary, there is a lack of automatic unloading technology for aspheric lens ultra-precision grinding devices in the prior art. SUMMARY

[0008] The present application relates to the technical field of aspheric lens grinding processing, and particularly relates to an ultra-precision grinding device for aspheric lenses of infrared materials.

[0009] In order to achieve the above object, the technical scheme adopted by the present application is: a kind of for the non-spherical lens ultra-precision grinding processing device of infrared material, including grinding machine body, fixed seat is connected and arranged in the grinding machine body, rotatingly connected and arranged with rotating frame on the fixed seat, automatically unloading mechanism is slidably connected and arranged on the rotating frame, transmission structure is rotatably connected and arranged in the fixed seat, feeding belt is rotatably connected and arranged in the fixed seat, cover is slidably connected and arranged on the fixed seat, machine cover is rotatably connected and arranged on the grinding machine body.

[0010] Preferably, the fixed seat is provided in a hollow structure, and a discharging port is formed at the top of one end of the fixed seat inside the grinding machine body, and a material taking port is formed at the top of one end of the fixed seat outside the grinding machine body.

[0011] Preferably, a motor is fixedly connected and arranged at one end of the rotating frame inside the fixed seat, a transmission wheel is fixedly connected and arranged on the outer wall of one end of the rotating frame inside the fixed seat, and an electric push rod is fixedly connected and arranged at one end of the rotating frame outside the fixed seat.

[0012] Preferably, the automatic unloading mechanism includes an adjusting frame, a sliding block is fixedly connected and arranged at one end of the adjusting frame, the sliding block is slidably connected and arranged with the rotating frame, the sliding block is fixedly connected and arranged with the output end of the electric push rod at the other end, and a driving compression rod is fixedly connected and arranged at the end of the adjusting frame away from the sliding block.

[0013] Preferably, a vacuum pump is fixedly connected and arranged at one end of the adjusting frame, a protective cover is threadedly connected and arranged on the outer wall of the adjusting frame at the position of the vacuum pump, a negative pressure pipe is fixedly connected and arranged at the output end of the vacuum pump extending to the outside through the inner wall of the adjusting frame, and a non-spherical lens adapter sleeve is threadedly connected and arranged at the other end of the negative pressure pipe.

[0014] Preferably, the transmission structure includes a universal joint, the universal joint is rotatably connected and arranged with the inner wall of the fixed seat, a driving wheel is fixedly connected and arranged at one end of the universal joint, and a toothed groove wheel is fixedly connected and arranged at the other end of the universal joint.

[0015] Preferably, a toothed disc is rotatably connected and arranged in the toothed groove wheel, a plurality of meshing teeth are rotatably connected and arranged in the toothed disc in an annular structure, a tension spring is fixedly connected and arranged at one end of the meshing teeth, the other end of the tension spring is fixedly connected and arranged with the toothed disc, the meshing teeth are rotatably connected and arranged with the toothed groove in the inner wall of the toothed groove wheel, a gear wheel is fixedly connected and arranged at the outer end of the toothed disc, and the gear wheel is rotatably connected and arranged with the transmission wheel.

[0016] Preferably, a plurality of mounting sleeves are fixedly arranged on the feeding belt, a threaded connection head is arranged on the inner wall of the mounting sleeve, an aspherical lens placing seat is fixedly arranged on the connection head, rollers are frictionally arranged at both ends of the feeding belt, and one end of one of the rollers is fixedly connected with a driven wheel which is in meshing transmission with a driving wheel.

[0017] Preferably, an inclined surface frame is fixedly arranged on one side of the cover, the inclined surface frame is in sliding contact with the outer wall of the driving pressure rod, the lower surface of the cover is in sliding contact with the outer wall of the discharge port on the fixed seat, a guide rod is fixedly arranged on the top surface of the cover, the guide rod is in sliding fit with the fixed seat, a spring is fixedly arranged at one end of the guide rod, and the other end of the spring is fixedly connected with the fixed seat.

[0018] Compared with the prior art, the present application has the following beneficial effects:

[0019] 1. After the aspherical lens is ground, the automatic unloading mechanism is driven by the rotating frame to rotate above the aspherical lens, the aspherical lens is fitted and pressed on the aspherical lens, the aspherical lens is adsorbed and taken off by the negative pressure generated by the vacuum pump, and is placed on the aspherical lens placing seat, replacing the traditional manual taking operation. The automatic taking and placing lens can reduce the error and potential damage caused by manual intervention, can continuously work efficiently in a high-yield environment, avoids human fatigue, effectively improves the production efficiency of the aspherical lens, ensures the machining precision, and reduces the influence of human factors on the product quality.

[0020] 2. By arranging the transmission mechanism, when the rotating frame is reset, the transmission mechanism drives the feeding belt to rotate intermittently, so that the plurality of aspherical lens placing seats are moved to the discharge port in turn, facilitating the placement of the next aspherical lens, realizing the precise conveying and continuous operation of the aspherical lens placing seat, reducing manual intervention, improving the efficiency of the automatic production line, and ensuring that the aspherical lens is sent to the discharge port in turn and stably, and preparing for the next operation, thereby further improving the production efficiency and machining precision.

[0021] 3. By arranging the cover, the cooling liquid and impurities can be prevented from entering the fixed seat during machining, ensuring the cleanliness of the fixed seat. When the discharge is moved downward through the adjusting frame, the cover can be automatically pushed open by the driving pressure rod for placement. Through the automatic cover pushing and placement operation, the downtime can be reduced, the production cycle can be optimized, and the production efficiency can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a whole structure schematic view of the present application for the aspherical lens ultra-precision grinding device of the infrared material.

[0023] Figure 2 The whole structure of the non-spherical lens ultra-precision grinding device for infrared material is shown in the opened machine cover.

[0024] Figure 3 The fixed seat structure of the non-spherical lens ultra-precision grinding device for infrared material is shown in the sectional view.

[0025] Figure 4 The fixed seat structure of the non-spherical lens ultra-precision grinding device for infrared material is shown in the sectional view.

[0026] Figure 5 The rotating frame structure of the non-spherical lens ultra-precision grinding device for infrared material is shown in the sectional view.

[0027] Figure 6 The automatic feeding mechanism structure of the non-spherical lens ultra-precision grinding device for infrared material is shown in the sectional view.

[0028] Figure 7 The automatic feeding mechanism structure of the non-spherical lens ultra-precision grinding device for infrared material is shown in the sectional view.

[0029] Figure 8 The feeding belt structure of the non-spherical lens ultra-precision grinding device for infrared material is shown in the sectional view.

[0030] Figure 9 The feeding belt structure of the non-spherical lens ultra-precision grinding device for infrared material is shown in the sectional view.

[0031] 1, grinding machine body; 2, fixed seat; 3, rotating frame; 4, automatic feeding mechanism; 5, transmission structure; 6, feeding belt; 7, cover; 8, machine cover; 201, feeding port; 202, material taking port; 301, motor; 302, transmission wheel; 303, electric push rod; 401, adjusting frame; 402, sliding block; 403, driving pressure rod; 404, vacuum pump; 405, protective cover; 406, negative pressure pipe; 407, non-spherical lens adapter; 501, universal joint; 502, driving wheel; 503, gear wheel; 504, toothed disc; 505, meshing tooth; 506, tension spring; 507, gear; 601, mounting sleeve; 602, connecting head; 603, non-spherical lens placing seat; 604, roller shaft; 605, driven wheel; 701, inclined frame; 702, guide rod; 703, spring. DETAILED DESCRIPTION

[0032] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0033] like Figures 1-9 The device shown is an ultra-precision grinding apparatus for aspherical lenses of infrared materials, including a grinding machine body 1, a fixed seat 2 fixedly connected inside the grinding machine body 1, a rotating frame 3 rotatably connected through the fixed seat 2, an automatic feeding mechanism 4 slidably connected to the rotating frame 3, a transmission structure 5 rotatably connected inside the fixed seat 2, a feeding belt 6 rotatably connected inside the fixed seat 2, a cover 7 slidably connected to the fixed seat 2, and an organic cover 8 rotatably connected to the grinding machine body 1.

[0034] like Figure 4 As shown, the fixed base 2 has a hollow structure. The top of the fixed base 2 located inside the grinding machine body 1 has a discharge port 201, and the top of the fixed base 2 located outside the grinding machine body 1 has a take-out port 202.

[0035] like Figure 5 As shown, a motor 301 is fixedly connected to one end of the rotating frame 3 located inside the fixed base 2, a transmission wheel 302 is fixedly connected to the outer wall of the other end of the rotating frame 3 located inside the fixed base 2, and an electric push rod 303 is fixedly connected to the other end of the rotating frame 3 located outside the fixed base 2.

[0036] like Figure 6 As shown, the automatic feeding mechanism 4 includes an adjusting frame 401. A slider 402 is fixedly connected to one end of the adjusting frame 401. The slider 402 is slidably engaged with the rotating frame 3. The other end of the slider 402 is fixedly connected to the output end of the electric push rod 303. A drive pressure rod 403 is fixedly connected to the end of the adjusting frame 401 away from the slider 402.

[0037] A vacuum pump 404 is fixedly connected to one end of the adjusting frame 401. A protective cover 405 is threadedly connected to the outer wall of the adjusting frame 401 at the vacuum pump 404. The output end of the vacuum pump 404 extends through the inner wall of the adjusting frame 401 to the outside and is fixedly connected to a negative pressure pipe 406. The other end of the negative pressure pipe 406 passes through the adjusting frame 401 and is threadedly connected to an aspherical lens adapter 407. The electric actuator 303 drives the adjusting frame 401 connected to the slider 402 to move downward, causing the adjusting frame 401 to move the aspherical lens adapter 407 onto the aspherical lens. Then, the vacuum pump 404 generates negative pressure to adsorb the aspherical lens.

[0038] like Figure 7As shown, the transmission structure 5 includes a universal joint 501 rotatably connected to the inner wall of the fixed seat 2, one end of the universal joint 501 is connected and fixedly provided with a driving wheel 502, and the other end of the universal joint 501 is connected and fixedly provided with a toothed groove wheel 503.

[0039] A toothed disc 504 is rotatably connected through the toothed groove wheel 503, a plurality of meshing teeth 505 are rotatably connected in an annular structure in the toothed disc 504, one end of the meshing teeth 505 is connected and fixedly provided with a tension spring 506, the other end of the tension spring 506 is connected and fixedly provided with the toothed disc 504, the meshing teeth 505 are movably engaged and driven with the tooth grooves in the inner wall of the toothed groove wheel 503, the outer end of the toothed disc 504 is connected and fixedly provided with a gear 507, and the gear 507 is engaged and driven with the transmission wheel 302. The transmission wheel 302 drives the gear 507 to rotate, at this time the gear 507 drives the connected toothed disc 504 to rotate, so that the meshing teeth 505 on the toothed disc 504 will drive the toothed groove wheel 503 to rotate under the action of the tension spring 506, thereby driving the toothed groove wheel 503 connected to the universal joint 501 to rotate.

[0040] As shown in the figure, Figure 8 A plurality of mounting sleeves 601 are connected and fixedly provided on the feeding belt 6, a connecting head 602 is threadedly connected to the inner wall of the mounting sleeve 601, a non-spherical lens placing seat 603 is connected and fixedly provided on the connecting head 602, roller shafts 604 are frictionally driven at both ends of the feeding belt 6, the roller shafts 604 are rotatably connected to the inner wall of the fixed seat 2, one end of one of the roller shafts 604 is connected and fixedly provided with a driven wheel 605, and the driven wheel 605 is engaged and driven with the driving wheel 502. The universal joint 501 drives the driving wheel 502 to rotate, thereby driving the roller shaft 604 connected to the driven wheel 605 to rotate, so that the roller shaft 604 drives the feeding belt 6 to rotate, and drives the other non-spherical lens placing seat 603 to move to the discharge port 201.

[0041] As shown in the figure, Figure 9 One side of the cover 7 is connected and fixedly provided with an inclined surface frame 701, the inclined surface frame 701 is in sliding contact with the outer wall of the driving pressure rod 403, the lower surface of the cover 7 is in sliding contact with the outer wall of the discharge port 201 on the fixed seat 2, the top surface of the cover 7 is connected and fixedly provided with a guide rod 702, the guide rod 702 is in sliding fit with the fixed seat 2, one end of the guide rod 702 is connected and fixedly provided with a spring 703, and the other end of the spring 703 is connected and fixedly provided with the fixed seat 2. The electric push rod 303 drives the adjusting frame 401 to move downward, at this time the driving pressure rod 403 connected to the adjusting frame 401 will contact and press the inclined surface frame 701, thereby driving the connected cover 7 to move away, so that the non-spherical lens can be placed in the non-spherical lens placing seat 603, and then when the adjusting frame 401 moves upward, the spring 703 drives the cover 7 connected to the guide rod 702 to reset.

[0042] Working principle: before the grinding machine body 1 is used for ultra-precision grinding of aspheric lens, according to the shape and size of the processed aspheric lens, the appropriate aspheric lens adapter 407 and aspheric lens placing seat 603 are selected for installation, the aspheric lens adapter 407 is connected with the negative pressure pipe 406 through screw thread, and the connecting head 602 at the bottom of the aspheric lens placing seat 603 is connected with the installation sleeve 601 through screw thread;

[0043] Then after the grinding machine body 1 is used for ultra-precision grinding of aspheric lens, the rotating frame 3 connected with the motor 301 is rotated, which drives the automatic unloading mechanism 4 to rotate above the aspheric lens, then the vacuum pump 404 is used to inject gas into the negative pressure pipe 406, so that the gas cleans the aspheric lens, removes the cooling liquid, etc., then the electric push rod 303 drives the sliding block 402 connected with the adjusting frame 401 to move down, so that the adjusting frame 401 drives the aspheric lens adapter 407 to cover the aspheric lens, then the vacuum pump 404 generates negative pressure to adsorb the aspheric lens, then after the aspheric lens is taken off, the rotating frame 3 is controlled to rotate, so that the aspheric lens is located above the discharge port 201;

[0044] Then the electric push rod 303 drives the adjusting frame 401 to move down, at this time the driving pressure rod 403 connected with the adjusting frame 401 will contact and press the inclined frame 701, so that the connected cover 7 will move away, so that the aspheric lens can be placed in the aspheric lens placing seat 603, then when the adjusting frame 401 moves up, the spring 703 will drive the cover 7 connected with the guide rod 702 to reset;

[0045] Then when the rotating frame 3 reversely rotates to drive the automatic unloading mechanism 4 to reset, the rotating frame 3 will drive the connected transmission wheel 302 to rotate, so that the transmission wheel 302 drives the gear 507 to rotate, at this time the gear 507 will drive the connected toothed disc 504 to rotate, so that the meshing teeth 505 on the toothed disc 504 will drive the gear 503 to rotate under the action of the tension spring 506, so that the gear 503 connected with the universal joint 501 will rotate, so that the universal joint 501 drives the driving wheel 502 to rotate, so as to drive the roller shaft 604 connected with the driven wheel 605 to rotate, so that the roller shaft 604 drives the feeding belt 6 to rotate, and drives the other aspheric lens placing seat 603 to move to the discharge port 201, then the aspheric lens placed in the aspheric lens placing seat 603 is moved to the taking port 202 for convenient taking out.

[0046] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only the principles of the present application. Various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An ultra-precision grinding device for aspheric lens of infrared material, comprising a grinding machine body (1), characterized in that: The grinding machine body (1) is provided with a fixed seat (2) connected and fixed inside, a rotating frame (3) is rotatably connected through the fixed seat (2), an automatic unloading mechanism (4) is slidably connected on the rotating frame (3), a transmission structure (5) is rotatably connected in the fixed seat (2), a feeding belt (6) is rotatably connected in the fixed seat (2), a cover (7) is slidably connected on the fixed seat (2), and a machine cover (8) is rotatably connected on the grinding machine body (1). The automatic unloading mechanism (4) comprises an adjusting frame (401), one end of the adjusting frame (401) is connected and fixed with a sliding block (402), the sliding block (402) is slidably connected with the rotating frame (3), the other end of the sliding block (402) is connected and fixed with the output end of an electric push rod (303), one end of the adjusting frame (401) is connected and fixed with a driving pressure rod (403) away from the sliding block (402), one end of the adjusting frame (401) is connected and fixed with a vacuum pump (404), the outer wall of the adjusting frame (401) at the position of the vacuum pump (404) is threadedly connected with a protective cover (405), the output end of the vacuum pump (404) extends to the outside through the inner wall of the adjusting frame (401) and is connected and fixed with a negative pressure pipe (406), the other end of the negative pressure pipe (406) passes through the adjusting frame (401) and is threadedly connected with an aspherical lens adapter sleeve (407). The transmission structure (5) comprises a universal joint (501), the universal joint (501) is rotatably connected with the inner wall of the fixed seat (2), one end of the universal joint (501) is connected and fixed with a driving wheel (502), the other end of the universal joint (501) is connected and fixed with a toothed groove wheel (503), a toothed disc (504) is rotatably connected through the toothed groove wheel (503), a plurality of meshing teeth (505) are rotatably connected in the toothed disc (504) in an annular structure, one end of the meshing teeth (505) is connected and fixed with a tension spring (506), the other end of the tension spring (506) is connected and fixed with the toothed disc (504), the meshing teeth (505) are movably engaged and driven with the tooth grooves in the inner wall of the toothed groove wheel (503), the outer end of the toothed disc (504) is connected and fixed with a gear wheel (507), and the gear wheel (507) is engaged and driven with the transmission wheel (302).

2. The device for ultra-precision grinding of aspheric lenses for infrared materials according to claim 1, characterized in that: The fixed seat (2) is provided in a hollow structure, a feeding opening (201) is formed at the top of one end of the fixed seat (2) in the grinding machine body (1), and a material taking opening (202) is formed at the top of the other end of the fixed seat (2) outside the grinding machine body (1).

3. The apparatus for ultra-precision grinding of aspherical lenses for infrared materials according to claim 1, characterized in that: One end of the rotating frame (3) in the fixed seat (2) is connected and fixed with a motor (301), the outer wall of one end of the rotating frame (3) in the fixed seat (2) is connected and fixed with a transmission wheel (302), and the other end of the rotating frame (3) outside the fixed seat (2) is connected and fixed with an electric push rod (303).

4. The apparatus for ultra-precision grinding of aspherical lenses for infrared materials according to claim 1, characterized in that: A plurality of mounting sleeves (601) are fixedly connected on the feeding belt (6), a connecting head (602) is threadedly connected to the inner wall of the mounting sleeve (601), an aspherical lens placing seat (603) is fixedly connected to the connecting head (602), roller shafts (604) are frictionally driven arranged at both ends of the feeding belt (6), the roller shafts (604) are rotatably connected to the inner wall of the fixed seat (2), and one end of one of the roller shafts (604) is fixedly connected with a driven wheel (605), which is in meshing transmission with the driving wheel (502).

5. The apparatus for ultra-precision grinding of aspherical lenses for infrared materials according to claim 1, characterized in that: The side of the cover (7) is fixedly connected with an inclined surface frame (701), the inclined surface frame (701) is in sliding contact with the outer wall of the driving pressure rod (403), the lower surface of the cover (7) is in sliding contact with the outer wall of the discharging opening (201) on the fixed seat (2), the top surface of the cover (7) is fixedly connected with a guide rod (702), the guide rod (702) is in sliding fit with the fixed seat (2), one end of the guide rod (702) is fixedly connected with a spring (703), and the other end of the spring (703) is fixedly connected with the fixed seat (2).

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