An all-in-one machine for grinding and polishing ultra-thin reflective lenses

Abstract

The present invention discloses an all-in-one machine for grinding and polishing ultra-thin reflective lenses, which relates to the technical field of lens grinding, and comprises: a base, on which a vertical driving assembly is fixed, and the vertical driving assembly has a vertical driving end; a slide cylinder, which is rotatably connected to the vertical driving end; a rotating cylinder, which is rotatably arranged on the base, the rotating cylinder is sleeved on the outside of the slide cylinder, and the inner wall of the rotating cylinder is provided with a limiting groove extending along its axial direction, and the outer wall of the slide cylinder is fixed with a limiting block corresponding to the limiting groove; a polishing disc, which is connected to the bottom of the slide cylinder; a carrier, which is used to carry a workpiece to be processed and provide edge compensation for the workpiece to be processed, so that the force and wear degree of the polishing disc are uniform, thereby improving the grinding accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of lens grinding, in particular to an integrated machine for grinding and polishing ultra-thin reflective lenses. Background Art

[0002] As an important optical component, reflective lenses are widely used in various optical systems and equipment. With the advancement of technology and the diversification of application requirements, the design of reflective lenses has gradually tended to be ultra-thin and irregular to adapt to more complex optical requirements and application scenarios. However, this design trend has brought certain difficulties to the processing and manufacturing of reflective lenses, especially in the grinding and polishing process.

[0003] Specifically, reflective lenses often adopt irregular circular designs, such as elliptical, rectangular, polygonal, etc., to meet specific optical performance and application requirements. During the grinding and polishing process, the grinding and polishing machine usually operates by driving the grinding disc in a circular motion. Therefore, this irregular shape causes the grinding disc to be unable to maintain uniform contact pressure when it contacts it. In addition, in this movement mode, the edge of the grinding disc does not continuously contact the reflective lens, while the center of the grinding disc continuously contacts the reflective lens, so the wear of the grinding disc is uneven.

[0004] Uneven stress and wear will lead to inconsistent polishing quality of the lens surface. Some areas may appear overly smooth or concave due to over-polishing, while some areas may remain rough or have scratches due to under-polishing. This inconsistency in surface quality will directly affect the overall optical performance of the lens, such as reflectivity, light transmittance and imaging quality.

[0005] Therefore, it is necessary to provide an ultra-thin reflective lens grinding and polishing all-in-one machine to solve the above problems. Summary of the invention

[0006] In order to solve the above problems, the present invention provides the following technical solutions: an ultra-thin reflective lens grinding and polishing machine, comprising:

[0007] A base, on which a vertical drive assembly is fixed, wherein the vertical drive assembly has a vertical drive end;

[0008] A slide cylinder, which is rotatably connected to the vertical drive end;

[0009] A rotating drum is rotatably arranged on the base, the rotating drum is sleeved on the outside of the sliding drum, and the inner wall of the rotating drum is provided with a limiting groove extending along its axial direction, and the outer wall of the sliding drum is fixed with a limiting block corresponding to the limiting groove;

[0010] a polishing plate connected to the bottom of the slide cylinder;

[0011] The carrier is used to carry the workpiece to be processed and provide edge compensation for the workpiece to be processed so that the force and wear of the polishing disc are uniform.

[0012] Preferably, the carrier comprises:

[0013] A chassis having a through hole in the middle thereof;

[0014] A lifting rod, which is located in the through hole and has a lifting end;

[0015] A suction cup, which is fixed to the lifting end and is used to absorb and position the workpiece to be processed;

[0016] The compensating piece is fixed on the upper part of the base plate and forms a disc-shaped structure together with the workpiece to be processed. The outer diameter of the disc-shaped structure is consistent with the outer diameter of the polishing plate.

[0017] Preferably, the suction cup is a negative pressure suction cup having a suction end for sucking the workpiece to be processed, and an edge portion of the suction end is covered by an outer edge of the workpiece to be processed.

[0018] Preferably, a first strain gauge is embedded in the compensating member;

[0019] A second strain gauge is embedded in the suction cup;

[0020] Before the suction cup is lifted by the lifting rod, the vertical driving assembly drives the polishing plate to move downward until the pressure sensed by the first strain gauge reaches a first threshold value;

[0021] At this time, the lifting rod lifts the suction cup so that the pressure sensed by the second strain gauge reaches a first threshold.

[0022] Preferably, a plurality of threaded rods are rotatably arranged in the chassis, and a positioning seat is transmission-connected to the threaded rods, and the positioning seat is slidably arranged in the chassis along the radial direction of the chassis;

[0023] Before the suction cup is used to absorb the workpiece to be processed located on the suction cup, each of the threaded rods is rotated to adjust the position of each of the positioning seats to achieve position adjustment of the workpiece to be processed.

[0024] Preferably, one end of the threaded rod is driven by a motor through a bevel gear set, both ends of the threaded rod are threaded, the middle part is a smooth rod, and the smooth rod is limitedly supported by a straightening seat.

[0025] Preferably, the polishing disc is a hollow structure, the top of which is connected to the sliding cylinder, the bottom of the polishing disc has a plurality of through holes, the sliding cylinder is sealingly and slidingly connected to the rotating cylinder, and the two are interconnected, the rotating cylinder is connected to the liquid supply pipe through a rotatable joint, and the liquid supply pipe is supplied with polishing liquid by an external liquid supply device.

[0026] Preferably, after the workpiece to be processed is straightened by the positioning seat, the lifting rod lifts the suction cup until the workpiece to be processed reaches a preset position. At this time, each positioning seat is reset and then moves synchronously toward the lifting rod to achieve positioning of the lifting end of the lifting rod.

[0027] Compared with the prior art, the present invention provides an integrated machine for grinding and polishing ultra-thin reflective lenses, which has the following beneficial effects:

[0028] The invention realizes high-precision polishing of the surface of ultra-thin reflective lenses through precise matching of the vertical drive assembly and the slide cylinder, meeting the strict requirements of ultra-thin reflective lenses for surface finish. The edge compensation design of the carrier ensures uniform force and wear of the polishing disc during polishing, improves polishing accuracy, and increases the service life of the polishing disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the main structure of an ultra-thin reflective lens grinding and polishing machine;

[0030] Figure 2 It is a schematic diagram of the main structure of a carrier in an ultra-thin reflective lens grinding and polishing machine;

[0031] Figure 3 It is a schematic diagram of the three-dimensional structure of a carrier in an all-in-one machine for grinding and polishing ultra-thin reflective lenses;

[0032] Figure 4 for Figure 2 AA cross-sectional structural diagram;

[0033] Figure 5 A schematic diagram of the three-dimensional structure of a carrier in an ultra-thin reflective lens grinding and polishing machine without a lifting rod and a suction cup;

[0034] Figure 6 It is a three-dimensional structural schematic diagram of a lifting rod and a suction cup in an ultra-thin reflective lens grinding and polishing machine;

[0035] In the figure: 1. base; 2. vertical drive assembly; 3. rotating drum; 4. sliding drum; 5. polishing disc; 6. liquid supply pipe; 7. carrier; 71. chassis; 72. threaded rod; 73. straightening seat; 74. bevel gear set; 75. motor; 76. positioning seat; 77. lifting rod; 78. compensation part; 79. suction cup. DETAILED DESCRIPTION

[0036] The terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned description of the drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances, which is merely a way of distinguishing the objects of the same attributes when describing them in the embodiments of the present application. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, so that the process, method, system, product or equipment comprising a series of units need not be limited to those units, but may include other units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0037] Please refer to Figure 1-Figure 6 In an embodiment of the present invention, there is provided an integrated machine for grinding and polishing ultra-thin reflective lenses, comprising:

[0038] A base 1, on which a vertical drive assembly 2 is fixed, wherein the vertical drive assembly 2 has a vertical drive end;

[0039] A slide cylinder 4, which is rotatably connected to the vertical drive end;

[0040] A rotating drum 3 is rotatably arranged on the base 1, and the rotating drum 3 is sleeved on the outside of the sliding drum 4. The inner wall of the rotating drum 3 is provided with a limiting groove extending along its axial direction, and the outer wall of the sliding drum 4 is fixed with a limiting block corresponding to the limiting groove;

[0041] A polishing plate 5 connected to the bottom of the slide cylinder 4;

[0042] The carrier 7 is used to carry the workpiece to be processed and provide edge compensation for the workpiece to be processed so that the force and wear degree of the polishing disc 5 are uniform.

[0043] The implementation includes the following steps:

[0044] S1. Place the workpiece to be processed (ultra-thin reflective lens) on the carrier 7. The carrier 7 is designed with an edge compensation function to ensure that the force on the polishing disc 5 is uniform during the polishing process;

[0045] S2. Start the vertical drive assembly 2, and its vertical drive end drives the slide 4 and the connected polishing disc 5 to move downward and approach the workpiece to be processed. The rotating drum 3 starts to rotate on the base 1, and the slide 4 achieves stable axial movement and rotation inside the rotating drum 3 through the cooperation of the limit block and the limit groove. This design ensures that the polishing disc 5 can rotate while moving vertically, thereby achieving comprehensive polishing of the workpiece to be processed.

[0046] S3. As the grinding progresses, the polishing material (such as polishing liquid) is evenly applied to the workpiece to be processed. At this time, the polishing disc 5 finely polishes the surface of the lens until the required surface finish is achieved.

[0047] S4. After polishing is completed, the vertical drive assembly 2 lifts the polishing plate 5 back to the initial position. The processed ultra-thin reflective lens is removed from the carrier 7 for further processing or testing.

[0048] That is to say, in this embodiment, through the precise cooperation of the vertical drive assembly 2 and the slide 4, high-precision polishing of the surface of the ultra-thin reflective lens is achieved, meeting the strict requirements of the ultra-thin reflective lens on the surface finish. The edge compensation design of the carrier 7 ensures that the force of the polishing disc is uniform during the polishing process, improves the polishing accuracy, and the service life of the polishing disc.

[0049] Specifically, the carrier 7 includes:

[0050] A bottom plate 71, wherein the middle portion thereof has a through hole;

[0051] A lifting rod 77, which is located in the through hole, and the lifting rod 77 has a lifting end;

[0052] A suction cup 79, which is fixed to the lifting end and is used to absorb and position the workpiece to be processed;

[0053] The compensating member 78 is fixed on the top of the base plate 71 and forms a disc-shaped structure together with the workpiece to be processed. The outer diameter of the disc-shaped structure is consistent with the outer diameter of the polishing plate 5 .

[0054] The lifting rod 77 drives the suction cup 79 to move up and down through its lifting end, and the suction cup 79 uses the negative pressure principle to absorb the workpiece to be processed to ensure its stable positioning during the polishing process.

[0055] The compensating member 78 is fixed on the upper part of the bottom plate 71, and together with the workpiece to be processed, forms a disc-shaped structure. The outer diameter of the disc-shaped structure is consistent with the outer diameter of the polishing plate 5, thereby achieving compensation for the edge of the workpiece to be processed.

[0056] During the polishing process, the polishing disc 5 contacts the disc-shaped structure. Due to the presence of the compensation member 78 , the force on the polishing disc 5 is evenly distributed on the entire polishing disc 5 , thereby avoiding wear or deformation of the polishing disc 5 due to uneven force.

[0057] In addition, the suction cup 79 is a negative pressure suction cup, which has a suction end for sucking the workpiece to be processed, and the edge portion of the suction end is covered by the outer edge of the workpiece to be processed.

[0058] Among them, the negative pressure suction cup absorbs the workpiece by generating negative pressure inside it. When the negative pressure suction cup contacts the workpiece and turns on the negative pressure, the air is sucked out, thereby forming a tight fit between the negative pressure suction cup and the workpiece.

[0059] It should also be explained that the edge of the suction end is covered by the outer edge of the workpiece to be processed, so that during the polishing process, the polishing disc 5 will not directly contact the suction end of the suction cup 79. This ensures that the suction cup 79 will not be damaged during the polishing process, and prevents polishing materials or debris from entering the suction cup 79 and affecting its normal operation.

[0060] In addition, since the suction end is covered by the workpiece, there is no direct contact between the suction end of the suction cup 79 and the compensation member 78. This avoids machining errors or equipment damage caused by interference between the suction cup 79 and the compensation member 78 during the polishing process.

[0061] In this embodiment, a first strain gauge is embedded in the compensation member 78;

[0062] A second strain gauge is embedded in the suction cup 79;

[0063] Before the suction cup 79 is lifted by the lifting rod 77, the vertical driving assembly 2 drives the polishing plate 5 to move downward until the pressure sensed by the first strain gauge reaches a first threshold value;

[0064] At this time, the lifting rod 77 lifts the suction cup 79 so that the pressure sensed by the second strain gauge reaches a first threshold.

[0065] The first strain gauge and the second strain gauge are respectively embedded in the compensating member 78 and the suction cup 79. These strain gauges (the first strain gauge and the second strain gauge) are used to monitor the pressures they are subjected to in real time.

[0066] Before the suction cup 79 is lifted by the lifting rod 77, the vertical driving assembly 2 drives the polishing disc 5 to move downward until the polishing disc 5 contacts and generates pressure with the compensating member 78. During this process, the first strain gauge senses and records the pressure on the compensating member 78 in real time.

[0067] When the pressure sensed by the first strain gauge reaches a preset first threshold, the system considers that the contact pressure between the polishing plate 5 and the compensating member 78 is stable and uniform. At this time, the vertical drive assembly 2 stops moving the polishing plate 5 downward.

[0068] Next, the lifting rod 77 lifts the suction cup 79 until the pressure sensed by the second strain gauge also reaches the first threshold value. This process ensures that the suction cup 79 can compensate for any height difference caused by the surface change of the compensating member 78 during the lifting process, so that the workpiece to be processed and the compensating member 78 remain at the same level.

[0069] After the suction cup 79 is lifted to the right position, the polishing disc 5 starts to work. Since the workpiece and the compensating member 78 are kept at the same horizontal plane, the polishing disc 5 can evenly process the surface of the workpiece.

[0070] Through real-time monitoring and adjustment, the horizontal consistency between the workpiece to be processed and the compensating member 78 is ensured, thereby achieving a high-precision polishing effect. This design can automatically adapt to the changes in the surface of the compensating member 78 caused by multiple polishings, and can maintain the consistency of polishing without manual intervention. The use of strain gauges for real-time monitoring, combined with the precise control of the vertical drive assembly 2 and the lifting rod 77, realizes intelligent management of the polishing process.

[0071] In addition, the first threshold is actually the grinding pressure value, that is, in this embodiment, the position of the polishing disc 5 is determined based on the compensation piece 78, and then the position of the workpiece to be processed is determined based on the polishing disc 5.

[0072] It should also be explained that, in this embodiment, the compensation member 78 provided can solve the problem of uneven force and uneven wear of the polishing disc 5 to a certain extent.

[0073] In this embodiment, a plurality of threaded rods 72 are rotatably disposed in the chassis 71, and a positioning seat 76 is transmission-connected to the threaded rods 72. The positioning seat 76 is slidably disposed in the chassis 71 along the radial direction of the chassis 71;

[0074] Before the suction cup 79 is used to absorb the workpiece to be processed located on the suction cup 79 , the threaded rods 72 are rotated to adjust the positions of the positioning seats 76 , so as to adjust the positions of the workpiece to be processed.

[0075] Before the workpiece to be processed is adsorbed, the position of the positioning seat 76 is adjusted by rotating each threaded rod 72. Since the positioning seat 76 is arranged to slide along the radial direction of the bottom plate 71, the workpiece to be processed can be accurately positioned.

[0076] After the positioning seat 76 completes the positioning of the workpiece, the suction cup 79 absorbs the workpiece to keep its position unchanged.

[0077] Furthermore, one end of the threaded rod 72 is driven by a motor 75 through a bevel gear set 74 , both ends of the threaded rod 72 are threaded, and the middle portion is a smooth rod, and the smooth rod is limitedly supported by a straightening seat 73 .

[0078] The motor 75 serves as a power source and transmits the rotational power to the threaded rod 72 through the bevel gear set 74. The design of the bevel gear set 74 allows the motor 75 to drive the threaded rod 72 with a smaller volume and angle change, increasing the flexibility of the layout.

[0079] The middle part of the threaded rod 72 is a bare rod without threads. The purpose of this design is to use the straightening seat 73 to more effectively support the threaded rod 72 in a limited position to prevent it from deflecting or shaking during the rotation process.

[0080] In this embodiment, the polishing disc 5 is a hollow structure, the top of which is connected to the slide cylinder 4, and the bottom of the polishing disc 5 has multiple through holes. The slide cylinder 4 is sealed and slidably connected to the rotating cylinder 3, and the two are interconnected. The rotating cylinder 3 is connected to the liquid supply pipe 6 through a rotatable joint, and the liquid supply pipe 6 is supplied with polishing liquid by an external liquid supply device.

[0081] The polishing disc 5 is a hollow structure, and its top is connected to the slide cylinder 4. This allows the polishing liquid to flow from the slide cylinder 4 into the interior of the polishing disc 5. The bottom of the polishing disc 5 is provided with a plurality of through holes, which allow the polishing liquid to flow out from the interior of the polishing disc 5 and be evenly distributed on the surface of the polishing disc 5 in contact with the workpiece to be processed.

[0082] The slide cylinder 4 is sealed and slidably connected to the rotating cylinder 3, and the two are interconnected. This design ensures that the polishing liquid can flow freely between the slide cylinder 4 and the rotating cylinder 3 without leaking to the outside. The rotating cylinder 3 is connected to the liquid supply pipe 6 through a swivel joint. The liquid supply pipe 6 is supplied with polishing liquid by an external liquid supply device. When the external liquid supply device is started, the polishing liquid flows into the rotating cylinder 3 through the liquid supply pipe 6, and then enters the interior of the polishing disc 5 through the slide cylinder 4.

[0083] In addition, after the workpiece to be processed is straightened by the positioning seat 76, the lifting rod 77 lifts the suction cup 79 until the workpiece to be processed reaches a preset position. At this time, each positioning seat 76 is reset and then moves synchronously toward the lifting rod 77 to achieve positioning of the lifting end of the lifting rod 77.

[0084] Before polishing begins, the workpiece is placed on the suction cup 79 and is straightened by the positioning seat 76. The design of the positioning seat 76 ensures the accurate horizontal position of the workpiece to be processed, which facilitates the subsequent accurate combination with the compensation member 78.

[0085] Afterwards, the suction cup 79 absorbs the workpiece to be processed, and the lifting rod 77 starts to lift the suction cup 79. During this process, the lifting height of the suction cup 79 is precisely controlled to ensure that the workpiece to be processed reaches the preset polishing position.

[0086] When the suction cup 79 is lifted into place and the workpiece reaches the preset position, each positioning seat 76 is reset and synchronously moves toward the direction of the lifting rod 77. This action ensures that the positioning seat 76 can fit closely to the lifting end of the lifting rod 77, thereby achieving the clamping and positioning of the lifting end.

[0087] After the positioning seat 76 clamps and positions the lifting end of the lifting rod 77, the polishing disc 5 starts the polishing operation. Since the workpiece is accurately positioned and kept stable, the polishing process can be carried out more evenly and accurately.

[0088] The straightening effect of the positioning seat 76 and the clamping and positioning of the lifting end of the lifting rod 77 together enhance the stability of the polishing process and reduce the processing errors caused by the deviation of the workpiece to be processed or the shaking of the lifting rod 77.

[0089] That is to say, the positioning seat 76 has a dual role. Dual role 1: The primary role of the positioning seat 76 is to straighten the workpiece to be processed. Dual role 2: In addition to straightening the workpiece to be processed, the positioning seat 76 also has the role of positioning the lifting end of the lifting rod 77.

[0090] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An integrated machine for grinding and polishing ultra-thin reflective lenses, characterized in that: include: A base (1) on which a vertical drive assembly (2) is fixed, wherein the vertical drive assembly (2) has a vertical drive end; A slide cylinder (4) which is rotatably connected to the vertical drive end; A rotating drum (3) is rotatably arranged on the base (1), the rotating drum (3) is sleeved on the outside of the sliding drum (4), and the inner wall of the rotating drum (3) is provided with a limiting groove extending along its axial direction, and the outer wall of the sliding drum (4) is fixed with a limiting block corresponding to the limiting groove; A polishing disc (5) connected to the bottom of the slide cylinder (4); A carrier (7) for carrying a workpiece to be processed and providing edge compensation for the workpiece to be processed so that the force and wear degree of the polishing disc (5) are uniform; The carrier (7) comprises: A bottom plate (71) having a through hole in the middle thereof; A lifting rod (77) located in the through hole, and the lifting rod (77) has a lifting end; A suction cup (79) fixed to the lifting end and used for sucking and positioning the workpiece to be processed; A compensating member (78) is fixed above the base plate (71) and together with the workpiece to be processed forms a disc-shaped structure, wherein the outer diameter of the disc-shaped structure is consistent with the outer diameter of the polishing plate (5).

2. The ultra-thin reflective lens grinding and polishing machine according to claim 1, characterized in that: The suction cup (79) is a negative pressure suction cup having a suction end for sucking the workpiece to be processed, and an edge portion of the suction end is covered by the outer edge of the workpiece to be processed.

3. The ultra-thin reflective lens grinding and polishing machine according to claim 1, characterized in that: A first strain gauge is embedded in the compensation member (78); A second strain gauge is embedded in the suction cup (79); Before the suction cup (79) is lifted by the lifting rod (77), the vertical drive assembly (2) drives the polishing disc (5) to move downward until the pressure sensed by the first strain gauge reaches a first threshold value; At this time, the lifting rod (77) lifts the suction cup (79) so that the pressure sensed by the second strain gauge reaches a first threshold value.

4. The ultra-thin reflective lens grinding and polishing machine according to claim 1, characterized in that: A plurality of threaded rods (72) are rotatably arranged in the chassis (71), a positioning seat (76) is drivingly connected to the threaded rods (72), and the positioning seat (76) is slidably arranged in the chassis (71) along the radial direction of the chassis (71); Before the suction cup (79) is used to absorb the workpiece to be processed located on the suction cup (79), each of the threaded rods (72) is rotated to adjust the position of each of the positioning seats (76) to achieve position adjustment of the workpiece to be processed.

5. The ultra-thin reflective lens grinding and polishing machine according to claim 4, characterized in that: One end of the threaded rod (72) is driven by a motor (75) via a bevel gear set (74); both ends of the threaded rod (72) are provided with threads, and the middle portion is a smooth rod, which is limitedly supported by a straightening seat (73).

6. The ultra-thin reflective lens grinding and polishing machine according to claim 1, characterized in that: The polishing disc (5) is a hollow structure, the top of which is connected to the slide cylinder (4), the bottom of the polishing disc (5) has a plurality of through holes, the slide cylinder (4) is sealed and slidably connected to the rotating cylinder (3), and the two are interconnected, the rotating cylinder (3) is connected to the liquid supply pipe (6) through a swivel joint, and the liquid supply pipe (6) is supplied with polishing liquid by an external liquid supply device.

7. The ultra-thin reflective lens grinding and polishing machine according to claim 4, characterized in that: After the workpiece to be processed is straightened by using the positioning seat (76), the lifting rod (77) lifts the suction cup (79) until the workpiece to be processed reaches a preset position. At this time, each positioning seat (76) is reset and then synchronously moves toward the lifting rod (77) to achieve positioning of the lifting end of the lifting rod (77).

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