Ultra-precision grinding machining device for aspheric lens made of infrared material

Abstract

The invention relates to the technical field of aspheric lens grinding machining, in particular to an aspheric lens ultra-precision grinding machining device for infrared materials, which comprises a grinding machine body, a fixed seat is fixedly connected in the grinding machine body, and a rotating frame is rotatably connected to the fixed seat in a penetrating manner. An automatic discharging mechanism is arranged on the rotating frame in a sliding fit mode, a blocking cover is arranged on the fixing base in a sliding fit mode, a machine cover is rotationally connected to the grinding machine body, and after the aspherical lens is ground, the aspherical lens is adsorbed, taken down and placed on the aspherical lens placing base through negative pressure generated by the vacuum pump. Traditional manual piece taking operation is replaced, errors and potential damage caused by manual intervention can be reduced through automatic lens taking and placing, continuous and efficient work can be achieved in the high-yield environment, human fatigue is avoided, the production efficiency of the aspherical lens is effectively improved, the machining precision is ensured, and meanwhile the influence of human factors on the product quality is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of aspheric lens grinding, and in particular to an ultra-precision grinding device for an aspheric lens of infrared material. Background Art

[0002] Aspheric lenses made of infrared materials play an important role in infrared optical systems, especially in situations where high-precision focusing and a small optical system volume are required. The design and manufacture of aspheric lenses are more complicated than spherical lenses, but they can effectively reduce optical distortion and improve imaging quality. The following is some detailed information about aspheric lenses made of infrared materials.

[0003] Aspheric lenses are lenses whose surface shape does not conform to the geometry of a soccer ball, compared to common spherical lenses. The surface of an aspheric lens can be accurately described by mathematical formulas and is usually used to solve aberration problems of spherical lenses, such as spherical aberration and chromatic aberration. Aspheric lenses have good optical properties, can provide higher image quality and more compact design, and are widely used in precision optical instruments, infrared imaging, laser systems and other fields.

[0004] Ultra-precision grinding is one of the key technologies for manufacturing infrared material aspheric lenses. Since infrared lenses require very high surface quality and shape accuracy, especially under the accuracy requirements of wavelength level, ultra-precision grinding technology can meet these stringent requirements.

[0005] The document with prior art publication number CN216029908U provides an ultra-precision grinding device for aspheric lenses of infrared materials. Through the setting of a first motor and a second motor, when a user uses the grinding device, the user can respectively realize multi-directional rotation processing of the rotating disk through the setting of the first motor and the second motor, thereby solving the problem that the existing processing device requires multi-axis cooperation to complete the precision processing of the workpiece to a certain extent, and thus can also greatly alleviate the user's usage pressure.

[0006] In the prior art, after the aspheric lens is ground, it needs to be removed manually. Manually removing and placing the workpiece takes time, which significantly increases 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, the prior art lacks a technology for automatically unloading materials for ultra-precision grinding processing devices for aspheric lenses. Summary of the invention

[0008] The purpose of the present invention is to solve the shortcomings of the background technology and to propose an ultra-precision grinding device for aspheric lenses of infrared materials.

[0009] To achieve the above objectives, the technical solution adopted by the present invention is: an ultra-precision grinding device for aspheric lenses of infrared materials, comprising a grinding machine body, a fixed seat is fixedly connected inside the grinding machine body, a rotating frame is rotatably connected through the fixed seat, an automatic unloading mechanism is slidably provided on the rotating frame, a transmission structure is rotatably provided inside the fixed seat, a feeding belt is rotatably provided inside the fixed seat, a baffle cover is slidably provided on the fixed seat, and an organic cover is rotatably provided on the grinding machine body.

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

[0011] Preferably, one end of the rotating frame located in the fixed seat is connected and fixedly provided with a motor, the outer wall of one end of the rotating frame located in the fixed seat is connected and fixedly provided with a transmission wheel, and one end of the rotating frame located outside the fixed seat is connected and fixedly provided with an electric push rod.

[0012] Preferably, the automatic unloading mechanism includes an adjusting frame, one end of the adjusting frame is connected and fixedly provided with a slider, the slider is slidably matched with the rotating frame, the other end of the slider is connected and fixedly provided with the output end of the electric push rod, and the end of the adjusting frame away from the slider is connected and fixedly provided with a driving pressure rod.

[0013] Preferably, a vacuum pump is fixedly connected to one end of the adjustment frame, a protective cover is threadedly connected to the outer wall of the adjustment frame located at the vacuum pump, the output end of the vacuum pump extends to the outside through the inner wall of the adjustment frame and is fixedly connected to a negative pressure tube, and the other end of the negative pressure tube passes through the adjustment frame and is threadedly connected to an aspheric lens adapter.

[0014] Preferably, the transmission structure comprises a universal joint, which is rotatably connected to the inner wall of the fixing seat, one end of the universal joint is connected and fixedly provided with a driving wheel, and the other end of the universal joint is connected and fixedly provided with a toothed wheel.

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

[0016] Preferably, a plurality of mounting sleeves are fixedly connected to the feeding belt, a connector is threadedly provided on the inner wall of the mounting sleeve, an aspheric lens placement seat is fixedly connected to the connector, rollers are frictionally transmitted at both ends of the feeding belt, the rollers are rotatably connected to the inner wall of the fixed seat, one end of one of the rollers is fixedly connected to a driven wheel, and the driven wheel is meshed with the driving wheel for transmission.

[0017] Preferably, a sloped frame is fixedly provided on one side of the baffle cover, and the sloped frame is in sliding contact with the outer wall of the driving pressure rod, the lower surface of the baffle cover is in sliding contact with the outer wall of the discharge port on the fixed seat, and a guide rod is fixedly provided on the top surface of the baffle cover, and the guide rod is slidably matched with the fixed seat, one end of the guide rod is fixedly provided with a spring, and the other end of the spring is fixedly provided with the fixed seat.

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

[0019] 1. After the aspheric lens is ground, the automatic unloading mechanism is driven by the rotating frame to rotate to the top of the aspheric lens. After the aspheric lens adapter is pressed on the aspheric lens, the aspheric lens is adsorbed and removed by the vacuum pump to generate negative pressure, and then placed on the aspheric lens placement seat, replacing the traditional manual picking operation. The automatic picking and placing of lenses can reduce the errors and potential damage caused by manual intervention, and can also work continuously and efficiently in a high-production environment, avoiding human fatigue, effectively improving the production efficiency of aspheric lenses, ensuring processing accuracy, and reducing the impact of human factors on product quality;

[0020] 2. By setting up a transmission mechanism, when the rotating frame rotates and resets, the feeding belt will be driven by the transmission mechanism to rotate intermittently, so that multiple aspheric lens placement seats are moved to the discharge port in sequence, which is convenient for the placement of the next aspheric lens. It can realize the precise delivery and continuous operation of the aspheric lens placement seat, reduce manual intervention, and improve the efficiency of the automated production line. At the same time, the intermittently rotating feeding belt can ensure that the aspheric lenses are delivered to the discharge port in sequence and stably, so as to prepare for the next round of operation, and further improve production efficiency and processing accuracy;

[0021] 3. By setting the baffle cover, coolant and impurities can be prevented from entering the fixed seat during processing, ensuring the cleanliness of the fixed seat. When the adjusting frame is moved down to release the material, the baffle cover can be automatically pushed open by driving the pressure rod for placement. The automated baffle cover pushing and placing operations can reduce the downtime, optimize the production cycle, and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of an ultra-precision grinding device for an aspheric lens of infrared material according to the present invention;

[0023] Figure 2 It is a schematic diagram of the overall structure of an ultra-precision grinding and processing device for aspheric lenses of infrared materials of the present invention when the cover is opened;

[0024] Figure 3 It is a schematic cross-sectional view of the structure of a fixing seat and other parts of an ultra-precision grinding device for an aspheric lens of an infrared material according to the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of a fixing seat of an ultra-precision grinding device for an aspheric lens of infrared material according to the present invention;

[0026] Figure 5 A schematic diagram of the structure of a rotating frame of an ultra-precision grinding device for an aspheric lens of infrared materials according to the present invention;

[0027] Figure 6 It is a partial cross-sectional expansion schematic diagram of the automatic unloading mechanism structure of an ultra-precision grinding device for aspheric lenses of infrared materials of the present invention;

[0028] Figure 7 It is a partial cross-sectional expansion schematic diagram of the transmission mechanism structure of an ultra-precision grinding device for aspheric lenses of infrared materials of the present invention;

[0029] Figure 8 A schematic diagram of the structure of a feeding belt of an ultra-precision grinding device for an aspheric lens of infrared material according to the present invention;

[0030] Fig. 9 The present invention is a schematic diagram of a cover structure of an ultra-precision grinding device for an aspheric lens of infrared material.

[0031] 1. Grinding machine body; 2. Fixed seat; 3. Rotating frame; 4. Automatic unloading mechanism; 5. Transmission structure; 6. Feeding belt; 7. Cover; 8. Machine cover; 201. Discharge port; 202. Removal port; 301. Motor; 302. Transmission wheel; 303. Electric push rod; 401. Adjustment frame; 402. Sliding block; 403. Driving pressure rod; 404. Vacuum pump; 405. Protective cover; 406. Negative Pressure tube; 407, aspheric lens adapter set; 501, universal joint; 502, driving wheel; 503, toothed wheel; 504, toothed disc; 505, meshing teeth; 506, tension spring; 507, gear; 601, mounting sleeve; 602, connector; 603, aspheric lens placement seat; 604, roller; 605, driven wheel; 701, inclined frame; 702, guide rod; 703, spring. DETAILED DESCRIPTION

[0032] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

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

[0034] like Figure 4 As shown, the fixed seat 2 is arranged in a hollow structure, a discharge port 201 is provided at the top of one end of the fixed seat 2 located inside the grinding machine body 1, and a material taking port 202 is provided at the top of one end of the fixed seat 2 located outside the grinding machine body 1.

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

[0036] like Figure 6 As shown, the automatic unloading mechanism 4 includes an adjusting frame 401, one end of which is connected and fixedly provided with a slider 402, the slider 402 is slidably matched with the rotating frame 3, the other end of the slider 402 is connected and fixedly provided with the output end of the electric push rod 303, and the end of the adjusting frame 401 away from the slider 402 is connected and fixedly provided with a driving pressure rod 403.

[0037] A vacuum pump 404 is fixedly connected to one end of the adjustment frame 401, and a protective cover 405 is threadedly connected to the outer wall of the adjustment frame 401 at the vacuum pump 404. The output end of the vacuum pump 404 passes through the inner wall of the adjustment frame 401 and extends 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 adjustment frame 401 and is threadedly connected to an aspheric lens adapter 407. The electric push rod 303 is used to drive the adjustment frame 401 connected to the slider 402 to move downward, so that the adjustment frame 401 drives the aspheric lens adapter 407 to be sleeved on the aspheric lens, and then the vacuum pump 404 is used to generate negative pressure to adsorb the aspheric lens.

[0038] like Figure 7As shown, the transmission structure 5 includes a universal joint 501, which is rotatably connected to the inner wall of the fixed base 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 wheel 503.

[0039] A toothed disc 504 is provided in rotational connection in the toothed wheel 503, and a plurality of meshing teeth 505 are provided in rotational connection in the toothed disc 504 in an annular structure, and a tension spring 506 is fixedly provided at one end of the meshing teeth 505, and the other end of the tension spring 506 is fixedly provided with the toothed disc 504, and the meshing teeth 505 are provided with a toothed groove on the inner wall of the toothed wheel 503 in a movable meshing transmission arrangement, and a gear 507 is fixedly provided at the outer end of the toothed disc 504, and the gear 507 is provided with a meshing transmission arrangement with the transmission wheel 302. The transmission wheel 302 drives the gear 507 to rotate, and 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 drive the toothed wheel 503 to rotate under the action of the tension spring 506, thereby driving the universal joint 501 connected to the toothed wheel 503 to rotate.

[0040] like Figure 8 As shown, a plurality of mounting sleeves 601 are connected and fixedly provided on the feeding belt 6, a connector 602 is threadedly connected to the inner wall of the mounting sleeve 601, an aspheric lens placement seat 603 is connected and fixedly provided on the connector 602, rollers 604 are frictionally driven at both ends of the feeding belt 6, the rollers 604 are rotatably connected and provided with the inner wall of the fixing seat 2, one end of one of the rollers 604 is connected and fixedly provided with a driven wheel 605, and the driven wheel 605 is meshed and driven with the driving wheel 502. The universal joint 501 drives the driving wheel 502 to rotate, thereby driving the roller 604 connected to the driven wheel 605 to rotate, so that the roller 604 drives the feeding belt 6 to rotate, and drives another aspheric lens placement seat 603 to move to the discharge port 201.

[0041] like Fig. 9 As shown, a slope frame 701 is connected and fixedly arranged on one side of the blocking cover 7, and the slope frame 701 is arranged in sliding contact with the outer wall of the driving pressure rod 403, and the lower surface of the blocking cover 7 is arranged in sliding contact with the outer wall of the discharge port 201 on the fixed seat 2, and a guide rod 702 is connected and fixedly arranged on the top surface of the blocking cover 7, and the guide rod 702 is arranged in sliding cooperation with the fixed seat 2, and a spring 703 is connected and fixedly arranged on one end of the guide rod 702, and the other end of the spring 703 is connected and fixedly arranged with the fixed seat 2. The electric push rod 303 drives the adjustment frame 401 to move downward, and at this time, the driving pressure rod 403 connected to the adjustment frame 401 will contact and squeeze the slope frame 701, thereby driving the connected blocking cover 7 to move away, so that the aspheric lens can be placed in the aspheric lens placement seat 603, and then when the adjustment frame 401 moves upward, the spring 703 will drive the blocking cover 7 connected to the guide rod 702 to reset.

[0042] Working principle: Before using the grinding machine body 1 to perform ultra-precision grinding on the aspheric lens, select a suitable aspheric lens adapter sleeve 407 and an aspheric lens placement seat 603 for installation according to the shape and size of the processed aspheric lens, and thread the aspheric lens adapter sleeve 407 and the negative pressure tube 406 together, and thread the connector 602 at the bottom of the aspheric lens placement seat 603 and the installation sleeve 601 together for installation;

[0043] Then, after the grinding machine body 1 performs ultra-precision grinding on the aspheric lens, the motor 301 is used to drive the connected rotating frame 3 to rotate, and at this time, the automatic unloading mechanism 4 is driven to rotate to the top of the aspheric lens, and then the vacuum pump 404 is used to first inject gas into the negative pressure tube 406, so that the gas performs gas cleaning on the aspheric lens and removes the coolant, etc., and then the electric push rod 303 is used to drive the adjustment frame 401 connected to the slider 402 to move downward, so that the adjustment frame 401 drives the aspheric lens adapter 407 to be sleeved on the aspheric lens, and then the vacuum pump 404 is used to generate negative pressure to adsorb the aspheric lens, and then after the aspheric lens is removed, 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 is used to drive the adjustment frame 401 to move downward. At this time, the driving pressure rod 403 connected to the adjustment frame 401 will contact and press the inclined frame 701, thereby driving the connected blocking cover 7 to move away, so that the aspheric lens can be placed in the aspheric lens placement seat 603. Then, when the adjustment frame 401 moves upward, the spring 703 will drive the blocking cover 7 connected to the guide rod 702 to reset.

[0045] Then, when the rotating frame 3 rotates in the opposite direction 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 toothed wheel 503 to rotate under the action of the tension spring 506, thereby driving the universal joint 501 connected to the toothed wheel 503 to rotate, so that 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 another aspheric lens placement seat 603 to move to the discharge port 201, and then moves the ground aspheric lens to the material removal port 202 for easy removal.

[0046] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. An ultra-precision grinding device for aspheric lenses of infrared materials, comprising a grinding machine body (1), characterized in that: A fixed seat (2) is fixedly connected inside the grinding machine body (1), a rotating frame (3) is rotatably connected to the fixed seat (2), an automatic unloading mechanism (4) is slidably provided on the rotating frame (3), a transmission structure (5) is rotatably connected inside the fixed seat (2), a feeding belt (6) is rotatably provided inside the fixed seat (2), a blocking cover (7) is slidably provided on the fixed seat (2), and a cover (8) is rotatably provided on the grinding machine body (1).

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

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

4. The ultra-precision grinding device for aspheric lenses of infrared materials according to claim 1, characterized in that: The automatic unloading mechanism (4) comprises an adjusting frame (401), one end of the adjusting frame (401) is connected and fixedly provided with a slider (402), the slider (402) is slidably matched with the rotating frame (3), the other end of the slider (402) is connected and fixedly provided with an output end of an electric push rod (303), and the end of the adjusting frame (401) away from the slider (402) is connected and fixedly provided with a driving pressure rod (403).

5. The ultra-precision grinding device for aspheric lenses of infrared materials according to claim 4, characterized in that: A vacuum pump (404) is fixedly connected to one end of the adjustment frame (401); a protective cover (405) is threadedly connected to the outer wall of the adjustment frame (401) at the vacuum pump (404); an output end of the vacuum pump (404) passes through the inner wall of the adjustment frame (401) and extends 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 adjustment frame (401) and is threadedly connected to an aspheric lens adapter (407).

6. The ultra-precision grinding device for aspheric lenses of infrared materials according to claim 1, characterized in that: The transmission structure (5) comprises a universal joint (501), the universal joint (501) being rotatably connected to the inner wall of the fixing seat (2), one end of the universal joint (501) being connected and fixedly provided with a driving wheel (502), and the other end of the universal joint (501) being connected and fixedly provided with a toothed wheel (503).

7. The ultra-precision grinding device for aspheric lenses of infrared materials according to claim 6, characterized in that: A toothed disc (504) is rotatably connected to the toothed wheel (503), and a plurality of meshing teeth (505) are rotatably connected to the toothed disc (504) in an annular structure. A tension spring (506) is fixedly connected to one end of the meshing teeth (505), and the other end of the tension spring (506) is fixedly connected to the toothed disc (504). The meshing teeth (505) are movably meshed with the teeth on the inner wall of the toothed wheel (503) for transmission. A gear (507) is fixedly connected to the outer end of the toothed disc (504), and the gear (507) is meshed with the transmission wheel (302) for transmission.

8. The ultra-precision grinding device for aspheric lenses of infrared materials according to claim 1, characterized in that: A plurality of mounting sleeves (601) are fixedly connected to the feeding belt (6), a connector (602) is threadedly connected to the inner wall of the mounting sleeve (601), an aspheric lens placement seat (603) is fixedly connected to the connector (602), rollers (604) are frictionally driven at both ends of the feeding belt (6), the rollers (604) are rotatably connected to the inner wall of the fixing seat (2), one end of one of the rollers (604) is fixedly connected to a driven wheel (605), the driven wheel (605) is meshed with the driving wheel (502) for transmission.

9. The ultra-precision grinding device for aspheric lenses of infrared materials according to claim 1, characterized in that: A slope frame (701) is fixedly connected to one side of the blocking cover (7), and the slope frame (701) is slidably contacted with the outer wall of the driving pressure rod (403). The lower surface of the blocking cover (7) is slidably contacted with the outer wall of the discharge port (201) on the fixed seat (2). A guide rod (702) is fixedly connected to the top surface of the blocking cover (7), and the guide rod (702) is slidably matched with the fixed seat (2). A spring (703) is fixedly connected to one end of the guide rod (702), and the other end of the spring (703) is fixedly connected to the fixed seat (2).

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