Arc-shaped lens polishing machine tool

Abstract

The invention relates to an arc-shaped lens polishing machine tool which comprises a positioning sleeve, the positioning sleeve is connected with a rotation driving mechanism for driving the positioning sleeve to rotate, a lens positioning mechanism is arranged on the positioning sleeve, a first telescopic mechanism is arranged on one side of the positioning sleeve, and a second telescopic mechanism is arranged on the other side of the positioning sleeve. The center line of the first telescopic mechanism and the center line of the second telescopic mechanism intersect with the center line of the positioning sleeve. A concave surface polishing strip is arranged on the first telescopic mechanism, and a convex surface polishing strip is arranged on the second telescopic mechanism. The lens polishing device can be used for polishing lenses with large diameters and can polish the concave surfaces and the convex surfaces of the lenses at the same time, and the polishing efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the field of machining machine tools, in particular to a curved lens polishing machine tool. Background Art

[0002] During the lens production process, its surface needs to be polished to improve the surface accuracy. The invention patent application with application number CN202311436733.5 discloses a curved lens polishing device, which can turn over the curved lens to polish the inner and outer surfaces of the lens. However, this polishing device is only suitable for batch processing of curved lenses with smaller sizes. When the lens size is larger, for example, when the lens diameter is greater than 100mm, it is difficult to stably position the lens using only a suction cup, and the polishing quality cannot be guaranteed. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a curved lens polishing machine tool, which is suitable for polishing curved lenses with larger diameters.

[0004] In order to solve the above problems, the technical solution adopted by the present invention is: a curved lens polishing machine tool, including a positioning sleeve, the positioning sleeve is connected to a rotating drive mechanism for driving the positioning sleeve to rotate, a lens positioning mechanism is arranged on the positioning sleeve, a first telescopic mechanism is arranged on one side of the positioning sleeve, and a second telescopic mechanism is arranged on the other side, the center lines of the first telescopic mechanism and the second telescopic mechanism intersect with the center line of the positioning sleeve; a concave polishing strip is arranged on the first telescopic mechanism, and a convex polishing strip is arranged on the second telescopic mechanism.

[0005] Furthermore, the lens positioning mechanism includes at least three positioning columns evenly arranged on the inner wall of the positioning sleeve, the length direction of the positioning column is consistent with the radial direction of the positioning sleeve, each of the positioning columns is provided with a fixed clamping block and a movable clamping block, the fixed clamping block is fixedly connected to the positioning column, the movable clamping block is slidably matched with the positioning column, and there is an arc-shaped clamping distance between the movable clamping block and the fixed clamping block, and the movable clamping block is connected to the fixed clamping block through a locking member.

[0006] Furthermore, the positioning column and the positioning sleeve are detachably connected;

[0007] A first positioning block is fixedly provided on the first telescopic mechanism, and the concave polishing strip is detachably mounted on the first positioning block; a second positioning block is fixedly provided on the second telescopic mechanism, and the convex polishing strip is detachably mounted on the second positioning block;

[0008] The first telescopic mechanism and the second telescopic mechanism are both hingedly mounted on the mounting frame, and the first telescopic mechanism and the second telescopic mechanism are both connected with an angle adjustment mechanism.

[0009] Furthermore, the positioning sleeve is rotatably mounted on the mounting sleeve, and a driven gear is provided on the outer wall of the positioning sleeve. The rotation drive mechanism includes a motor, a main shaft of the motor is connected to a driving gear, and the driving gear is meshed with the driven gear.

[0010] Furthermore, the center line of the positioning sleeve is horizontal, and the concave polishing strip and the convex polishing strip both extend from top to bottom; the concave polishing strip and the convex polishing strip are both provided with arc-shaped polishing surfaces, and first grooves are provided on both side edges of the polishing surfaces, and a flexible barrier layer is provided on the outer side edge of the bottom of the first groove; a second groove is provided on the polishing surface, and a dust collecting chamber is provided inside the lower end of the concave polishing strip and the convex polishing strip, and the lower ends of the bottoms of the first groove and the second groove are connected to the dust collecting chamber.

[0011] Furthermore, an air inlet cavity is provided inside the upper ends of the concave polishing strip and the convex polishing strip, the air inlet cavity is connected to an air inlet mechanism, the upper ends of the first groove and the second groove are connected to the air inlet cavity; and a plurality of exhaust filter holes are provided on the side wall of the dust collecting cavity.

[0012] Furthermore, a first positioning block is fixedly provided on the first telescopic mechanism, and the concave polishing strip is detachably mounted on the first positioning block; a second positioning block is fixedly provided on the second telescopic mechanism, and the convex polishing strip is detachably mounted on the second positioning block;

[0013] The width of the first positioning block is greater than the width of the concave polishing strip, the width of the second positioning block is greater than the width of the convex polishing strip, and a plurality of blowing heads are arranged on the sides of the first positioning block and the second positioning block, and the blowing direction of the blowing head is inclined downward; the blowing head is connected to a blowing mechanism;

[0014] A dust collecting hood is arranged below the positioning sleeve, and the dust collecting hood is connected with the dust removal bag through an air suction mechanism.

[0015] Furthermore, the sides of the first positioning block and the second positioning block are both provided with mounting grooves, and the concave polishing strip and the convex polishing strip both include a polishing portion and a mounting portion, the mounting portion is located in the mounting groove, and the mounting portion and the mounting groove are slidably matched in the width direction of the mounting groove; a spring is provided between one side of the mounting portion and the side wall of the mounting groove, and a pin hole is provided on the other side of the mounting portion, and a latch that slides with the pin hole is provided in the pin hole, and the latch passes through the side wall of the mounting groove; a columnar cavity is provided in the first positioning block and the second positioning block, and the columnar cavity is divided into a constant pressure chamber and a polishing agent storage chamber by a piston, an air pressure sensor is provided in the constant pressure chamber, and the constant pressure chamber is connected to an air pressure control mechanism, and the air pressure sensor and the air pressure control mechanism are both connected to a controller; a slidable sealing plate is provided at the port of the polishing agent storage chamber, and the sealing plate is connected to a connecting plate, a plurality of polishing agent adding through holes are provided on the connecting plate, and the connecting plate is fixedly connected to the mounting portion; the connecting plate and the spring are located on the same side of the mounting portion.

[0016] Furthermore, the sealing plate, the connecting plate, the mounting portion and the polishing portion are integrally formed.

[0017] The beneficial effects of the present invention are as follows: the present invention uses a lens positioning mechanism to clamp and position a lens with a circular contour and arc-shaped sides, so that the lens remains stable. During polishing, the rotation drive mechanism is used to drive the positioning sleeve to rotate, and the positioning sleeve drives the lens to rotate, and then the first telescopic mechanism and the second telescopic mechanism push the concave polishing strip and the convex polishing strip to move, and when the concave polishing strip and the convex polishing strip fit the concave surface and the convex surface of the lens, the concave polishing strip and the convex polishing strip can polish the lens.

[0018] The present invention can stably clamp and position lenses with larger diameters, can be used for polishing lenses with larger sizes, and can polish both the concave and convex surfaces of the lenses at the same time, thereby improving polishing efficiency. During polishing, the concave polishing strips and the convex polishing strips can be located on two sides of the same part of the lens, so that the polishing pressure of the concave polishing strips on the lens and the polishing pressure of the convex polishing strips on the lens are offset, and the force on the entire lens is balanced, which is conducive to maintaining the stability of the lens, reducing vibration, and preventing lens damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a front view schematic diagram of the first embodiment of the present invention;

[0020] Figure 2 is a schematic front view of a second embodiment of the present invention;

[0021] Figure 3 yes Figure 2 Schematic diagram of the middle A direction;

[0022] Figure 4 yes Figure 3 A schematic cross-sectional view of the middle BB;

[0023] Figure 5 yes Figure 3 Schematic cross-sectional view of CC;

[0024] Figure 6 yes Figure 3 Schematic cross-sectional view of the middle DD;

[0025] Figure 7 is a schematic diagram of the installation of the concave polishing strip and the convex polishing strip of the third embodiment;

[0026] Figure numerals: 1—positioning sleeve; 2—rotational drive mechanism; 3—first telescopic mechanism; 4—second telescopic mechanism; 5—first positioning block; 6—concave polishing strip; 61—polishing portion; 62—installation portion; 63—spring; 64—latch pin; 65—piston; 66—constant pressure chamber; 67—polishing agent storage chamber; 68—air pressure sensor; 69—air pressure control mechanism; 610—controller; 611—sealing plate; 612—connecting plate; 613—polishing agent adding through hole; 7—second positioning block Position block; 8—convex polishing strip; 9—positioning column; 10—fixed clamp block; 11—movable clamp block; 12—locking piece; 13—mounting frame; 14—angle adjustment mechanism; 15—mounting sleeve; 16—driven gear; 17—driving gear; 18—first groove; 19—blocking layer; 20—second groove; 21—dust collecting chamber; 22—air inlet chamber; 23—air inlet mechanism; 24—blowing head; 25—blowing mechanism; 26—dust collecting hood; 27—air suction mechanism; 28—dust bag. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0028] Embodiment 1

[0029] The arc lens polishing machine tool of this embodiment is used for polishing lenses with a circular outline, a concave surface on one side and a convex surface on the other side, uniform thickness and regular shape. The specific structure is as follows Figure 1As shown, it includes a positioning sleeve 1, which is a circular sleeve, and the positioning sleeve 1 is connected to a rotating drive mechanism 2 that drives the positioning sleeve 1 to rotate. A lens positioning mechanism is provided on the positioning sleeve 1, and the lens positioning mechanism is used to clamp and position the edge of the lens. A first telescopic mechanism 3 is provided on one side of the positioning sleeve 1, and a second telescopic mechanism 4 is provided on the other side. The center lines of the first telescopic mechanism 3 and the second telescopic mechanism 4 intersect with the center line of the positioning sleeve 1. A concave polishing strip 6 is provided on the first telescopic mechanism 3, and a convex polishing strip 8 is provided on the second telescopic mechanism 4. The concave polishing strip 6 and the convex polishing strip 8 are used to polish the concave surface and convex surface of the lens respectively. The concave polishing strip 6 and the convex polishing strip 8 are both provided with arc-shaped polishing surfaces, and the polishing surfaces can fit the concave surface or convex surface of the lens. After the lens is positioned on the positioning sleeve 1 by the lens positioning mechanism, the center line of the lens coincides with the center line of the positioning sleeve 1, and the center lines of the first telescopic mechanism 3 and the second telescopic mechanism 4 intersect with the center line of the positioning sleeve 1. According to the spherical center positions corresponding to the concave and convex surfaces of the lens, the angles of the first telescopic mechanism 3 and the second telescopic mechanism 4 are set so that the center lines of the first telescopic mechanism 3 and the second telescopic mechanism 4 can pass through the spherical center positions. When the first telescopic mechanism 3 and the second telescopic mechanism 4 drive the concave polishing strip 6 and the convex polishing strip 8 to move, the movement direction of the concave polishing strip 6 and the convex polishing strip 8 is consistent with the radial direction of the concave or convex surface, which can ensure that the polishing surfaces of the concave polishing strip 6 and the convex polishing strip 8 are respectively close to the concave surface and the convex surface.

[0030] When the curved lens is polished by using the present embodiment, the curved lens is first mounted on the lens positioning mechanism, and then the positioning sleeve 1 is driven to rotate at a constant speed by the rotation drive mechanism 2, and the positioning sleeve 1 drives the curved lens to rotate, and then the first telescopic mechanism 3 and the second telescopic mechanism 4 are used to respectively drive the concave polishing strip 6 and the convex polishing strip 8 to move toward the lens. When the concave polishing strip 6 and the convex polishing strip 8 respectively contact the concave surface and convex surface of the lens, the concave polishing strip 6 and the convex polishing strip 8 can polish the lens.

[0031] In the present invention, the positioning sleeve 1 has a larger inner diameter, and can position a larger curved lens, such as a curved lens with a diameter greater than 100 mm. During polishing, the concave polishing strip 6 and the convex polishing strip 8 are polished at the same time, and the polishing efficiency is high. In addition, by setting the positions of the first telescopic mechanism 3 and the second telescopic mechanism 4, the concave polishing strip and the convex polishing strip can be located on the two sides of the same part of the lens, and the polishing pressure of the concave polishing strip on the lens and the polishing pressure of the convex polishing strip on the lens offset each other, and the force on the entire lens is balanced, avoiding uneven force caused by the polishing pressure on the lens locally, which is conducive to maintaining the stability of the lens, reducing vibration, and preventing lens damage.

[0032] The lens positioning mechanism includes at least three positioning posts 9 evenly arranged on the inner wall of the positioning sleeve 1. The length direction of the positioning posts 9 is consistent with the radial direction of the positioning sleeve 1. Each positioning post 9 is provided with a fixed clamping block 10 and a movable clamping block 11. The fixed clamping block 10 is fixedly connected to the positioning post 9, and the movable clamping block 11 is slidably matched with the positioning post 9, that is, the movable clamping block 11 can slide along the radial direction of the positioning sleeve 1. Specifically, a dovetail-shaped slide groove can be provided on the positioning post 9, and a dovetail-shaped slider is provided at one end of the movable clamping block 11. The slider is located in the slide groove and slidably matched with the slide groove. There is an arc-shaped clamping distance between the movable clamping block 11 and the fixed clamping block 10. The movable clamping block 11 is provided with an arc-shaped convex clamping surface on the side facing the clamping distance, and the convex clamping surface can fit the convex surface of the edge of the lens. The fixed clamping block 10 is provided with an arc-shaped concave clamping surface on the side facing the clamping distance, and the concave clamping surface can fit the concave surface of the edge of the lens. The movable clamping block 11 is connected to the fixed clamping block 10 via a locking piece 12 .

[0033] When positioning the lens, first slide the movable clamp 11 so that the movable clamp 11 is away from the fixed clamp 10; then move the lens so that the concave edge of the lens fits the concave clamping surface of each fixed clamp 10, then slide the movable clamp 11 so that the movable clamp 11 moves toward the fixed clamp 10, and when the movable clamp 11 contacts the lens, use the locking member 12 to lock the movable clamp 11 and the fixed clamp 10, and provide a locking force to clamp the lens. The locking member 12 can be a screw, and the locking member 12 passes through the movable clamp 11 and is threadedly connected to the fixed clamp 10; in addition, the locking member 12 can also be a stud fixedly set on the fixed clamp 10, the axial direction of the stud is consistent with the sliding direction of the movable clamp 11, and a through hole is set on the movable clamp 11. When the movable clamp 11 moves toward the fixed clamp 10, the stud can pass through the through hole of the movable clamp 11, and at this time, a nut that matches the thread of the stud is installed at the end of the stud, and the nut can be locked. In order to prevent the lens from being damaged due to the pressure of the movable clamping block 11 and the fixed clamping block 10, elastic protective pads can be provided on the convex clamping surface and the convex clamping surface. The elastic protective pads can be rubber pads or the like.

[0034] The positioning column 9 is detachably connected to the positioning sleeve 1. Specifically, the positioning column 9 can be connected to the positioning sleeve 1 by bolts.

[0035] A first positioning block 5 is fixedly provided on the first telescopic mechanism 3, and a concave polishing strip 6 is detachably mounted on the first positioning block 5. A second positioning block 7 is fixedly provided on the second telescopic mechanism 4, and a convex polishing strip 8 is detachably mounted on the second positioning block 7. Specifically, the concave polishing strip 6 can be connected to the first positioning block 5 by screws, and the convex polishing strip 8 can be connected to the second positioning block 7 by screws.

[0036] The first telescopic mechanism 3 and the second telescopic mechanism 4 are both hingedly mounted on the mounting frame 13. The first telescopic mechanism 3 and the second telescopic mechanism 4 are both connected with an angle adjustment mechanism 14. The first telescopic mechanism 3, the second telescopic mechanism 4 and the angle adjustment mechanism 14 can be cylinders, hydraulic cylinders and other equipment. One end of the angle adjustment mechanism 14 is hinged to the mounting frame 13, and the other end is hinged to the first telescopic mechanism 3 or the second telescopic mechanism 4. The angle adjustment mechanism 14 can adjust the angle of the first telescopic mechanism 3 and the second telescopic mechanism 4.

[0037] In the present invention, when it is necessary to process lenses of different sizes, the original positioning column 9, convex polishing strip 8 and concave polishing strip 6 are removed, and according to the size of the new lens, the positioning column 9, movable clamp block 11, fixed clamp block 10, convex polishing strip 8 and concave polishing strip 6 that are adapted to the size of the lens are prepared. After the movable clamp block 11 and the fixed clamp block 10 are assembled to the positioning column 9, the positioning column 9 is installed as a whole on the positioning sleeve 1, and the new convex polishing strip 8 and concave polishing strip 6 are installed on the second positioning block 7 and the first positioning block 5 respectively, and then the angle of the first telescopic mechanism 3 and the second telescopic mechanism 4 are adjusted by using the angle adjustment mechanism 14 so that the center line of the first telescopic mechanism 3 and the second telescopic mechanism 4 can pass through the center of the sphere corresponding to the side of the lens.

[0038] It can be seen that the present invention can polish curved lenses of various sizes.

[0039] The positioning sleeve 1 is rotatably mounted on the mounting sleeve 15, and the mounting sleeve 15 can be fixed on the mounting frame 13. The mounting sleeve 15 has a circular inner cavity, and one end of the positioning sleeve 1 is mounted on the inner cavity of the mounting sleeve 15 through a bearing. A driven gear 16 is fixedly arranged on the outer wall of the positioning sleeve 1, and the rotation drive mechanism 2 includes a motor, and the main shaft of the motor is connected to a driving gear 17, and the driving gear 17 is meshed with the driven gear 16. The motor drives the positioning sleeve 1 to rotate through the driving gear 17 and the driven gear 16.

[0040] Embodiment 2

[0041] The arc lens polishing machine tool of this embodiment is as follows Figure 2 As shown, it includes a positioning sleeve 1, the positioning sleeve 1 is connected to a rotating drive mechanism 2 for driving the positioning sleeve 1 to rotate, a lens positioning mechanism is arranged on the positioning sleeve 1, a first telescopic mechanism 3 is arranged on one side of the positioning sleeve 1, and a second telescopic mechanism 4 is arranged on the other side, and the center lines of the first telescopic mechanism 3 and the second telescopic mechanism 4 intersect with the center line of the positioning sleeve 1; a concave polishing strip 6 is arranged on the first telescopic mechanism 3, and a convex polishing strip 8 is arranged on the second telescopic mechanism 4.

[0042] The lens positioning mechanism includes at least three positioning columns 9 evenly arranged on the inner wall of the positioning sleeve 1. The length direction of the positioning column 9 is consistent with the radial direction of the positioning sleeve 1. Each positioning column 9 is provided with a fixed clamping block 10 and a movable clamping block 11. The fixed clamping block 10 is fixedly connected to the positioning column 9, and the movable clamping block 11 is slidably matched with the positioning column 9. There is an arc-shaped clamping distance between the movable clamping block 11 and the fixed clamping block 10. The movable clamping block 11 is connected to the fixed clamping block 10 through a locking piece 12.

[0043] The positioning column 9 is detachably connected to the positioning sleeve 1; a first positioning block 5 is fixedly provided on the first telescopic mechanism 3, and a concave polishing strip 6 is detachably installed on the first positioning block 5; a second positioning block 7 is fixedly provided on the second telescopic mechanism 4, and a convex polishing strip 8 is detachably installed on the second positioning block 7; the first telescopic mechanism 3 and the second telescopic mechanism 4 are both hingedly installed on the mounting frame 13, and the first telescopic mechanism 3 and the second telescopic mechanism 4 are both connected with an angle adjustment mechanism 14.

[0044] The positioning sleeve 1 is rotatably mounted on the mounting sleeve 15 , and a driven gear 16 is disposed on the outer wall of the positioning sleeve 1 . The rotation driving mechanism 2 includes a motor, and a main shaft of the motor is connected to a driving gear 17 , which meshes with the driven gear 16 .

[0045] The above structure and function are the same as those of the first embodiment.

[0046] During the polishing process, the concave polishing strips 6 and the convex polishing strips 8 grind the lens surface, and the material on the lens surface becomes granular debris after being ground. The debris easily adheres to the lens and the polishing surfaces of the concave polishing strips 6 and the convex polishing strips 8. During polishing, the debris affects the contact between the polishing surface and the mirror surface, and the debris is subjected to the pressure of the concave polishing strips 6 and the convex polishing strips 8, which may cause scratches on the lens surface, affecting the polishing efficiency and polishing effect.

[0047] In order to solve the above problems, Figure 2 As shown, in this embodiment, the center line of the positioning sleeve 1 is in a horizontal state, and the concave polishing strip 6 and the convex polishing strip 8 extend from top to bottom. The concave polishing strip 6 and the convex polishing strip 8 are both provided with an arc-shaped polishing surface, such as Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, first grooves 18 are provided on both sides of the polishing surface, and a flexible barrier layer 19 is provided on the outer side of the bottom of the first groove 18. The barrier layer 19 can be made of existing materials such as a brush and a cleaning cloth. A second groove 20 is provided on the polishing surface, and a dust collecting chamber 21 is provided inside the lower ends of the concave polishing strip 6 and the convex polishing strip 8. The lower ends of the bottoms of the first groove 18 and the second groove 20 are connected to the dust collecting chamber 21.

[0048] By setting a flexible barrier layer 19 on both sides of the polishing surface, the barrier layer 19 has the function of cleaning and preventing debris from passing through the barrier layer 19. During polishing, the lens rotates, the concave polishing strip 6 and the convex polishing strip 8 remain stationary, and the mirror surface must first pass through the barrier layer 19 and then contact the polishing surface. When the mirror surface passes through the barrier layer 19, the debris attached to its surface is swept away by the barrier layer 19, which can prevent most of the external debris from reaching the first groove 18. When the polishing surface is polished, internal debris is generated. The barrier layer 19 can prevent most of the internal debris from moving to the outside of the barrier layer 19, ensuring that most of the internal debris will enter the first groove 18 and the second groove 20, and then slide down along the first groove 18 and the second groove 20 under the action of gravity to the dust collection chamber 21 for collection, and only a small part of the internal debris with a smaller particle size will adhere to the mirror surface.

[0049] In the present invention, the first groove 18 and the second groove 20 are used to remove chips, the dust collecting chamber 21 is used to collect chips, the barrier layer 19 is used to clean external chips, and the internal chips are blocked from moving to the outside, so that the amount of chips between the polishing surface and the mirror surface can be reduced, and the polishing efficiency and polishing effect can be improved. At the same time, since the chips are collected, the amount of chips entering the air is reduced, which is beneficial to improving the workshop environment. At regular intervals, the concave polishing strip 6 and the convex polishing strip 8 can be removed to clean the chips in the dust collecting chamber 21. The present invention directly uses the concave polishing strip 6 and the convex polishing strip 8 to collect chips, which simplifies the equipment structure.

[0050] In order to promote the debris in the first groove 18 and the second groove 20 to quickly enter the dust collecting chamber 21, an air inlet cavity 22 is arranged inside the upper end of the concave polishing strip 6 and the convex polishing strip 8, and the air inlet cavity 22 is connected to the air inlet mechanism 23, and the upper ends of the first groove 18 and the second groove 20 are connected to the air inlet cavity 22; the side wall of the dust collecting chamber 21 is provided with a plurality of exhaust filter holes.

[0051] The air intake mechanism 23 can be an air pump or a fan, etc., connected to the air intake chamber 22 through an air pipe, and can transport external air to the air intake chamber 22. The air in the air intake chamber 22 enters the first groove 18 and each second groove 20. The rapid circulation of air can drive the debris generated by polishing to move quickly to the lower end of the first groove 18 and each second groove 20 and enter the dust collecting chamber 21. Then the air is discharged from the exhaust filter hole, and the debris stays in the dust collecting chamber 21. In addition, the circulation of air can also take away the heat generated by the concave polishing strip 6 and the convex polishing strip 8, so as to achieve rapid heat dissipation of the concave polishing strip 6 and the convex polishing strip 8.

[0052] In order to fully remove the debris adhered to the mirror surface and clean the debris entering the air at the same time, the width of the first positioning block 5 is greater than the width of the concave polishing strip 6, and the width of the second positioning block 7 is greater than the width of the convex polishing strip 8. A plurality of blowing heads 24 are arranged on the sides of the first positioning block 5 and the second positioning block 7, and the blowing direction of the blowing head 24 is inclined downward; the blowing head 24 is connected to a blowing mechanism 25, and a dust hood 26 is arranged under the positioning sleeve 1, and the dust hood 26 is connected to a dust bag 28 through an air suction mechanism 27.

[0053] The blowing mechanism 25 can be a fan or an air pump, or can be the same device as the air intake mechanism 23. The blowing mechanism 25 can deliver fast-flowing air to each blowing head 24, and the air is sprayed downwardly toward the mirror surface through the blowing head 24, blowing off the debris attached to the mirror surface and driving the debris to flow downward, and the suction mechanism 27 sucks air, sucking the debris together with the air into the dust hood 26, and then transporting it to the dust bag 28 for dust removal. The suction mechanism 27 can be a fan or other equipment.

[0054] Embodiment 3

[0055] This embodiment Figure 1 On the basis of the first embodiment shown, the structure and installation method of the concave polishing strip 6 and the convex polishing strip 8 are further improved. When the lens needs to be finely polished and the surface roughness requirement is high, such as when processing precision optical lenses, it is usually necessary to add a polishing agent, which is usually made of cerium oxide, aluminum oxide powder, etc., and can be added directly or prepared into a suspension before adding. The existing adding method is to directly add the polishing agent to the polishing surface, and the polishing agent is gradually consumed during polishing, and it cannot be flexibly replenished during the polishing process.

[0056] In order to achieve flexible addition of polishing agent, the concave polishing strip 6 and the convex polishing strip 8 of this embodiment are adopted as follows Figure 7In the structure shown, the side surfaces of the first positioning block 5 and the second positioning block 7 are both provided with mounting grooves, and the concave polishing strip 6 and the convex polishing strip 8 both include a polishing portion 61 and a mounting portion 62, the mounting portion 62 is located in the mounting groove, and the mounting portion 62 and the mounting groove are slidably matched in the width direction of the mounting groove. A spring 63 is provided between one side of the mounting portion 62 and the side wall of the mounting groove, and a pin hole is provided on the other side of the mounting portion 62, and a latch 64 that is slidably matched with the pin hole is provided in the pin hole, and the latch 64 passes through the side wall of the mounting groove. The first positioning block 5 and the second positioning block 7 are provided with a columnar cavity, which is divided into a constant pressure cavity 66 and a polishing agent storage cavity 67 by a piston 65. An air pressure sensor 68 is provided in the constant pressure cavity 66, and the constant pressure cavity 66 is connected to an air pressure control mechanism 69. Both the air pressure sensor 68 and the air pressure control mechanism 69 are connected to a controller 610. A slidable sealing plate 611 is provided at the end of the polishing agent storage cavity 67 away from the piston 65, and the sealing plate 611 can seal the polishing agent storage cavity 67. The sealing plate 611 is connected to a connecting plate 612, and a plurality of polishing agent adding through holes 613 are provided on the connecting plate 612. The connecting plate 612 is fixedly connected to the polishing part 61. The sealing plate 611, the connecting plate 612, the mounting part 62 and the polishing part 61 are integrally formed. The side surface of the sealing plate 611, the side surface of the connecting plate 612 and the polishing surface of the polishing part 61 are located in the same arc surface, and can all fit the mirror surface. The connecting plate 612 and the spring 63 are located on the same side of the mounting portion 62 .

[0057] The polishing agent storage chamber 67 stores polishing agent and liquid. The polishing agent can be aluminum oxide powder, and the liquid can be water.

[0058] The air pressure sensor 68 is used to detect the air pressure in the constant pressure chamber 66 and transmit the detection result to the controller 610. The controller 610 controls the operation of the air pressure control mechanism 69 according to the detection result to ensure that the air pressure in the constant pressure chamber 66 is always at a set value. The air pressure in the constant pressure chamber 66 satisfies: when the polishing agent adding through hole 613 is connected to the polishing agent storage chamber 67, it can push the piston 65 to move and squeeze out the polishing agent. The air pressure control mechanism 69 can use an air pump, which is connected to the constant pressure chamber 66 through an air pipe.

[0059] The spring 63 is fixedly installed. After the mounting portion 62 is placed in the mounting groove, the spring 63 is compressed and has a certain elastic force, which presses the mounting portion 62 tightly. Then the latch 64 is inserted into the pin hole on the side of the mounting portion 62, and the mounting portion 62 can be stably installed.

[0060] During polishing, the pressure of the polishing part 61 on the lens remains constant, and the lens Figure 7The polishing part 61 rotates in the direction indicated by the middle arrow, generating friction force on the polishing part 61. Under the action of the friction force, the polishing part 61 and the mounting part 62 slide in the mounting groove as a whole, and the sliding direction is consistent with the movement direction of the lens, thereby compressing the spring 63. As is known, the polishing agent has a lubricating effect, which can reduce the friction between the polishing part 61 and the mirror surface. When the polishing agent is consumed, the friction between the polishing part 61 and the mirror surface gradually increases, so that the sliding distance between the polishing part 61 and the mounting part 62 increases, and the spring 63 is further compressed. When the polishing part 61 and the mounting part 62 slide, the sealing plate 611 and the connecting plate 612 are driven to move. When the friction force increases to a certain extent, the connecting plate 612 can move to the bottom of the polishing agent storage chamber 67. At this time, the polishing agent adding through hole 613 is connected with the polishing agent storage chamber 67. The liquid and polishing agent in the polishing agent storage chamber 67 are discharged through the polishing agent adding through hole 613 under the extrusion of the piston 65 and adhere to the mirror surface. After adding the polishing agent, the friction between the polishing part 61 and the mirror surface is reduced. Under the action of the elastic force of the spring 63, the polishing part 61 and the mounting part 62 drive the sealing plate 611 and the connecting plate 612 to reset, and the sealing plate 611 re-seals the polishing agent storage chamber 67.

[0061] The liquid in the polishing agent storage chamber 67 can play a role in lubrication and cooling, and is also used to drive the powdered polishing agent to flow. Even if the polishing agent settles to the bottom of the polishing agent storage chamber 67, the liquid can drive the polishing agent to flow onto the mirror surface.

[0062] The present invention can automatically add polishing agent, and when the polishing agent is consumed, new polishing agent is added in time to ensure the polishing effect.

[0063] This embodiment is suitable for precision polishing of lenses.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. 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. Curved lens polishing machine, characterized by: The invention comprises a positioning sleeve (1), wherein the positioning sleeve (1) is connected to a rotation driving mechanism (2) for driving the positioning sleeve (1) to rotate, a lens positioning mechanism is arranged on the positioning sleeve (1), a first telescopic mechanism (3) is arranged on one side of the positioning sleeve (1), and a second telescopic mechanism (4) is arranged on the other side, and the center lines of the first telescopic mechanism (3) and the second telescopic mechanism (4) intersect with the center line of the positioning sleeve (1); a concave polishing strip (6) is arranged on the first telescopic mechanism (3), and a convex polishing strip (8) is arranged on the second telescopic mechanism (4).

2. The arc lens polishing machine tool according to claim 1, characterized in that: The lens positioning mechanism comprises at least three positioning columns (9) uniformly arranged on the inner wall of the positioning sleeve (1), the length direction of the positioning columns (9) is consistent with the radial direction of the positioning sleeve (1), each of the positioning columns (9) is provided with a fixed clamping block (10) and a movable clamping block (11), the fixed clamping block (10) is fixedly connected to the positioning column (9), the movable clamping block (11) is slidably matched with the positioning column (9), and there is an arc-shaped clamping distance between the movable clamping block (11) and the fixed clamping block (10), and the movable clamping block (11) is connected to the fixed clamping block (10) through a locking piece (12).

3. The curved lens polishing machine tool as claimed in claim 2, characterized in that: The positioning column (9) is detachably connected to the positioning sleeve (1); A first positioning block (5) is fixedly arranged on the first telescopic mechanism (3), and the concave polishing strip (6) is detachably mounted on the first positioning block (5); a second positioning block (7) is fixedly arranged on the second telescopic mechanism (4), and the convex polishing strip (8) is detachably mounted on the second positioning block (7); The first telescopic mechanism (3) and the second telescopic mechanism (4) are both hingedly mounted on the mounting frame (13), and the first telescopic mechanism (3) and the second telescopic mechanism (4) are both connected to an angle adjustment mechanism (14).

4. The arc lens polishing machine tool according to claim 1, characterized in that: The positioning sleeve (1) is rotatably mounted on the mounting sleeve (15), and a driven gear (16) is provided on the outer wall of the positioning sleeve (1). The rotation drive mechanism (2) comprises a motor, and the main shaft of the motor is connected to a driving gear (17), and the driving gear (17) is meshed with the driven gear (16).

5. The arc lens polishing machine tool according to claim 1, characterized in that: The center line of the positioning sleeve (1) is horizontal, and the concave polishing strip (6) and the convex polishing strip (8) both extend from top to bottom; the concave polishing strip (6) and the convex polishing strip (8) are both provided with arc-shaped polishing surfaces, and first grooves (18) are provided on both sides of the polishing surfaces, and a flexible barrier layer (19) is provided on the outer side of the bottom of the first groove (18); a second groove (20) is provided on the polishing surface, and a dust collecting chamber (21) is provided inside the lower end of the concave polishing strip (6) and the convex polishing strip (8), and the lower ends of the bottoms of the first groove (18) and the second groove (20) are connected to the dust collecting chamber (21).

6. The arc lens polishing machine tool as claimed in claim 5, characterized in that: An air intake cavity (22) is provided inside the upper ends of the concave polishing strip (6) and the convex polishing strip (8), the air intake cavity (22) is connected to an air intake mechanism (23), and the upper ends of the first groove (18) and the second groove (20) are in communication with the air intake cavity (22); and a plurality of exhaust filter holes are provided on the side wall of the dust collecting cavity (21).

7. The arc lens polishing machine tool as claimed in claim 5, characterized in that: A first positioning block (5) is fixedly arranged on the first telescopic mechanism (3), and the concave polishing strip (6) is detachably mounted on the first positioning block (5); a second positioning block (7) is fixedly arranged on the second telescopic mechanism (4), and the convex polishing strip (8) is detachably mounted on the second positioning block (7); The width of the first positioning block (5) is greater than the width of the concave polishing strip (6), the width of the second positioning block (7) is greater than the width of the convex polishing strip (8), a plurality of air blowing heads (24) are arranged on the sides of the first positioning block (5) and the second positioning block (7), and the air blowing direction of the air blowing heads (24) is inclined downward; the air blowing heads (24) are connected to the air blowing mechanism (25); A dust collecting hood (26) is arranged below the positioning sleeve (1), and the dust collecting hood (26) is connected to a dust removal bag (28) via an air suction mechanism (27).

8. The curved lens polishing machine tool as claimed in claim 3, characterized in that: The side surfaces of the first positioning block (5) and the second positioning block (7) are both provided with mounting grooves, and the concave polishing strip (6) and the convex polishing strip (8) both include a polishing portion (61) and a mounting portion (62), wherein the mounting portion (62) is located in the mounting groove, and the mounting portion (62) and the mounting groove are slidably matched in the width direction of the mounting groove; a spring (63) is provided between one side of the mounting portion (62) and the side wall of the mounting groove, and a pin hole is provided on the other side of the mounting portion (62), and a latch (64) slidably matched with the pin hole is provided in the pin hole, and the latch (64) passes through the side wall of the mounting groove; a columnar cavity is provided in the first positioning block (5) and the second positioning block (7), and the columnar cavity is formed by a piston (65). ) is divided into a constant pressure chamber (66) and a polishing agent storage chamber (67), wherein an air pressure sensor (68) is arranged in the constant pressure chamber (66), and the constant pressure chamber (66) is connected to an air pressure control mechanism (69), and the air pressure sensor (68) and the air pressure control mechanism (69) are both connected to a controller (610); a slidable sealing plate (611) is arranged at the port of the polishing agent storage chamber (67), and the sealing plate (611) is connected to a connecting plate (612), and a plurality of polishing agent adding through holes (613) are arranged on the connecting plate (612), and the connecting plate (612) is fixedly connected to the mounting portion (62); the connecting plate (612) and the spring (63) are located on the same side of the mounting portion (62).

9. The arc lens polishing machine tool according to claim 8, characterized in that: The sealing plate (611), the connecting plate (612), the mounting portion (62) and the polishing portion (61) are integrally formed.

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