Rough grinding equipment for optical glass

Abstract

The utility model discloses coarse grinding equipment for optical glass. The coarse grinding equipment comprises a rack, a workbench, two grinding mechanisms arranged in parallel, a swinging mechanism for driving a grinding tool to swing, a gear motor, a transmission mechanism and a controller, according to the utility model, the balancing weight is arranged at the top of the spherical grinding tool to control the pressing force between the grinding tool and the grinding disc, so that the grinding effect of glass is ensured; the bottom of the grinding disc is clamped by a triangular chuck, the fixing effect is good, the position is accurate, one-time rough grinding forming of the optical glass is facilitated, and the grinding quality and efficiency are guaranteed; a glass block is ground through rotation of the grinding disc and swinging of the spherical grinding tool, mechanical automatic operation is achieved, the glass spherical surface grinding efficiency is effectively improved, and ground optical glass is good in spherical surface degree and roughness. And by adopting the parallel design of the double-station grinding mechanism, the grinding efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of optical glass processing, and in particular to a rough grinding device for optical glass. Background Technology

[0002] Optical glass is made by melting high-purity oxides of silicon, boron, sodium, potassium, zinc, lead, magnesium, calcium, barium, etc., in a platinum crucible at high temperature according to a specific formula. The mixture is then ultrasonically stirred to remove air bubbles. Afterward, it undergoes a long period of slow cooling to prevent internal stress in the glass block. The cooled glass block must be measured with optical instruments to check its purity, transparency, uniformity, refractive index, and dispersion to ensure they meet specifications. Qualified glass blocks are then heated and pressed to form optical lens blanks.

[0003] Cylindrical glass lenses are widely used in the modern optics industry, and the demand is huge. Due to the design optics and processing requirements of lenses, glass lenses are generally subjected to rough grinding and fine grinding. That is, before fine grinding, the glass lens is first rough ground to a specified spherical surface and then fine ground. However, the existing glass lens positioning structure is relatively complex, which makes the disassembly and assembly of glass lenses cumbersome. It also makes it difficult to achieve a specified thickness for rough grinding, resulting in poor sphericity and roughness, and low grinding efficiency. Utility Model Content

[0004] The technical problem to be solved by this invention is to overcome the defects of the prior art and provide a rough grinding device for optical glass.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] This utility model discloses a rough grinding device for optical glass, comprising a frame, a worktable in the middle of the frame, two grinding mechanisms arranged side by side on the worktable, and a swing mechanism rotatably connected to the top of each of the two grinding mechanisms. A reduction motor for driving the grinding mechanism and the swing mechanism is provided at the lower part of the frame. The output end of the reduction motor is connected to two symmetrically arranged transmission mechanisms, the top ends of which are respectively connected to the grinding mechanism and the swing mechanism for driving the grinding mechanism and the swing mechanism. A controller is also provided on one side of the frame.

[0007] As a preferred technical solution of this utility model, the grinding mechanism includes a rotatable base fixed to the worktable, a grinding disc fixedly connected to the inner side of the rotatable base, and a coarse grinding head located above the grinding disc. The rotatable part of the rotatable base is connected to the top bearing of the transmission mechanism. The rotatable base is used to drive the grinding disc to rotate. The grinding disc is used to place the optical glass to be ground. The top of the coarse grinding head is movably connected to the swing mechanism.

[0008] As a preferred embodiment of this utility model, the rough grinding head includes a spherical grinding tool for grinding concave surfaces of glass. A support rod is movably connected to the middle of the spherical grinding tool, and the bottom end of the support rod is a ball head. The spherical grinding tool and the ball head of the support rod are floatingly connected. A linear bearing is slidably connected to the outer surface of the support rod. A counterweight block for providing vertical downward pressure to the spherical grinding tool is detachably connected to the top of the support rod. The linear bearing is fixedly connected to the upper part of the swing mechanism for transmitting the power of the swing mechanism to the spherical grinding tool.

[0009] As a preferred embodiment of this utility model, the swing mechanism includes a bearing seat fixed to the inner side of the frame, a swing disk rotatably connected to the bearing seat, a displacement slider movably connected to the surface of the swing disk, and a displacement connecting rod connected to the top surface bearing of the displacement slider. The displacement slider rotates along the axis of the swing disk to drive the displacement connecting rod to swing left and right on the horizontal plane. One end of the displacement connecting rod is connected to a sliding plate via a bearing, and a fixed plate is connected to the sliding plate via a slide rail below the sliding plate. The displacement connecting rod drives the sliding plate to reciprocate relative to the fixed plate. The sliding plate is fixedly connected to the base of the linear bearing, and the bottom surface of the fixed plate is fixed to the top of the frame.

[0010] As a preferred embodiment of this utility model, the transmission mechanism includes a drive wheel fixedly connected to the output shaft of the geared motor, a first drive shaft for driving the rotatable base to rotate, and a second drive shaft for driving the swing mechanism. The bottom ends of the first drive shaft and the second drive shaft are rotatably connected to the bracket in the middle of the frame. A first driven wheel and a second driven wheel are connected in parallel to each other via a key in the middle of the first drive shaft. A third driven wheel is connected in the middle of the second drive shaft via a key. The first driven wheel is connected to the drive wheel by a belt for transmitting the power of the geared motor to the rotatable base. The second driven wheel and the third driven wheel are connected by a belt for transmitting the power of the geared motor to the swing mechanism.

[0011] In a preferred embodiment of this invention, the base plate of the controller is fixed to the side of the frame via a threaded connection, and the controller is electrically connected to the geared motor.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. By placing a counterweight on the top of the spherical grinding tool to control the pressing force between the spherical grinding tool and the grinding disc, the grinding effect of the glass is guaranteed. In addition, the bottom of the grinding disc is clamped with a triangular chuck, which has a good fixing effect and accurate position, making it convenient for one-time rough grinding of optical glass and ensuring the quality and efficiency of grinding.

[0014] 2. The glass block is ground by the rotation of the grinding disc and the oscillation of the spherical grinding tool, realizing automated mechanical operation, which effectively enhances the grinding efficiency of glass spherical surface, and the resulting optical glass has good sphericity and roughness.

[0015] 3. The parallel design of the dual-station grinding mechanism improves grinding efficiency. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is the front view of this utility model;

[0019] Figure 3 This is a top view of the present invention;

[0020] Figure 4 This is a side view of the present invention;

[0021] In the diagram: 1. Frame; 2. Worktable; 3. Grinding mechanism; 4. Swinging mechanism; 5. Gear motor; 6. Transmission mechanism; 7. Controller; 8. Rotatable base; 9. Grinding disc; 10. Rough grinding head; 11. Spherical grinding tool; 12. Support rod; 13. Linear bearing; 14. Counterweight; 15. Bearing seat; 16. Swinging disc; 17. Displacement slider; 18. Displacement connecting rod; 19. Sliding plate; 20. Fixed plate; 21. Driving wheel; 22. First drive shaft; 23. Second drive shaft; 24. First driven wheel; 25. Second driven wheel; 26. Third driven wheel. Detailed Implementation

[0022] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0023] In the attached diagram, all identical reference numerals refer to the same components.

[0024] like Figure 1-4As shown, this utility model provides a rough grinding device for optical glass, including a frame 1, a horizontal worktable 2 in the middle of the frame 1, and two parallel grinding mechanisms 3 on the worktable 2 for grinding the glass surface; each of the two grinding mechanisms 3 is rotatably connected to a swing mechanism 4 at its top for driving the spherical grinding tool 11 to swing; a geared motor 5 for driving the grinding mechanism 3 and the swing mechanism 4 is fixed to the lower part of the frame 2 by bolts; the output end of the geared motor 5 is connected to two symmetrically arranged transmission mechanisms 6 for transmitting the power of the geared motor 5 to the grinding mechanism 3 and the swing mechanism 4; a controller 7 is also provided on one side of the frame 1. The controller 7 starts the geared motor 5 to rotate, and through the power transmission of the transmission mechanisms 6, drives the grinding disc 9 to rotate and simultaneously drives the swing mechanism 4 to move, thereby driving the spherical grinding tool 11 to swing, thus realizing the automatic grinding of optical glass.

[0025] This invention uses a spherical grinding tool 11 and a grinding disc 9 to coarsely grind the surface of optical glass. The weight of the counterweight 14 is used as the pressing force between the spherical grinding tool 11 and the grinding disc 9. The counterweight 14 is placed on the top of the spherical grinding tool 11 to enhance the pressing force between the spherical grinding tool 11 and the grinding disc 9, thus ensuring the grinding effect.

[0026] Furthermore, such as Figure 2 As shown, the grinding mechanism 3 includes a rotatable base 8 fixed on the worktable 2. The rotatable base 8 is circular and is fixed to the upper surface of the worktable 2 by a threaded connection. A rotatable triangular chuck is provided on the upper part of the rotatable base 8. The lower part of the triangular chuck is cylindrical and is fixed to the fixed base of the rotatable base 8 by a bearing connection. The triangular chuck is fixed to the first drive shaft 22 by a key connection. Under the drive of the first drive shaft 22, the triangular chuck can rotate relative to the center of the rotatable base 8. A grinding disc 9 is detachably connected to the jaws on the inner side of the triangular chuck. The top of the grinding disc 9 is concave, and its curvature matches the radius of curvature of the convex surface of the glass to be ground. It is used to place the optical glass to be ground. The bottom of the concave surface is also provided with a porous structure for discharging grinding impurities. A coarse grinding head 10 for grinding the concave surface of the glass is correspondingly provided above the grinding disc 9. The top of the coarse grinding head 10 is movably connected to the swing mechanism 4.

[0027] Furthermore, the rough grinding head 10 includes a spherical grinding tool 11 that contacts the concave surface of the optical glass. Preferably, the bottom of the spherical grinding tool 11 is spherical, matching the radius of curvature of the concave surface of the optical glass. A support rod 12 is movably connected to the middle of the spherical grinding tool 11, and the bottom end of the support rod 12 is a ball head. The interior of the spherical grinding tool 11 has an arc surface. The spherical grinding tool 11 is floatingly connected to the ball head of the support rod 12, and the spherical grinding tool 11 can rotate relative to the spherical surface of the support rod 12. A linear bearing 13 is slidably connected to the outer circular surface of the support rod 12 for guiding the support rod 12 during its up-and-down movement. The top of the support rod 12 is fitted with a counterweight 14 for providing vertical downward pressure to the spherical grinding tool 11. The counterweight 14 is a cylindrical shape with a central opening. The side of the counterweight 14 has a slit for pressing. The counterweight 14 is locked to the outer surface of the support rod 12 by the lateral pressure provided by the transverse bolt. The linear bearing 13 is fixed to the upper part of the swing mechanism 4 by a threaded connection for transmitting the power of the swing mechanism 4 to the spherical grinding tool 11. Under the gravity of the upper counterweight 14, the spherical grinding tool 11 always maintains close contact with the surface of the optical glass.

[0028] Furthermore, such as Figure 3-4 As shown, the swing mechanism 4 includes a bearing seat 15 fastened to the inner side of the frame 1 by bolts; the bottom center of the swing disk 16 is rotatably connected to the bearing seat 15 via a bearing connection, and the upper surface of the swing disk 16 is bolted to the limiting blocks on both sides of the displacement slider 17; the top surface of the middle sliding block of the displacement slider 17 is movably connected to a displacement connecting rod 18 via a fisheye bearing, and the displacement slider 17 can rotate along the axis of the swing disk 16 to drive the displacement connecting rod 18 to swing left and right on the horizontal plane; the other end of the displacement connecting rod 18 is movably connected to a sliding plate 19 via a fisheye bearing; a fixed plate 20 is connected to the bottom surface of the sliding plate 19 via two slide rails, and the bottom surface of the fixed plate 20 is fastened to the top of the frame 1 via a threaded connection, and the sliding plate 19 can move along the two slide rails on the fixed plate 20; the sliding plate 19 is fixedly connected to the base of the linear bearing 13 via a threaded connection, and the displacement connecting rod 18 drives the sliding plate 19 to reciprocate relative to the fixed plate 20, thereby driving the linear bearing 13 and the module 11 to reciprocate in the horizontal direction.

[0029] Furthermore, such as Figure 2-4As shown, the transmission mechanism 6 includes a drive wheel 21 fixedly connected to the output shaft of the geared motor 5 by fastening screws; a first drive shaft 22 is arranged parallel to the output shaft of the geared motor 5, the top of the first drive shaft 22 is connected to the bottom of the rotatable base 8 by bearings, and is used to drive the rotatable base 8 to rotate; a second drive shaft 23 is arranged parallel to the first drive shaft 22, the top of the second drive shaft 23 is connected to the central axis of the swing disk 16 by fastening screws, and is used to drive the swing disk 16 to rotate; the bottom ends of the first drive shaft 22 and the second drive shaft 23 are respectively connected to the middle of the frame 1. The bracket is rotatably connected by bearings; the middle of the first drive shaft 22 is connected by a key to a first driven wheel 24 and a second driven wheel 25 arranged in parallel. The first driven wheel 24 is connected to the drive wheel 21 by a belt, which is used to transmit the power of the geared motor 5 to the first drive shaft 22, thereby driving the rotatable base 8 to rotate; the middle of the second drive shaft 23 is connected by a key to a third driven wheel 26. The second driven wheel 25 and the third driven wheel 26 are connected by a belt, which is used to transmit the power of the geared motor 5 through the first drive shaft 22 and the second drive shaft 23, and finally to the swing mechanism 4.

[0030] Furthermore, the base plate of the controller 7 is fixed to the side of the frame 1 by a threaded connection. The controller 7 is electrically connected to the geared motor 5 and is used to control the start and stop of the geared motor 5.

[0031] The method of using this utility model is as follows:

[0032] 1. Install a grinding disc 9 on the triangular chuck of the rotatable base 8, which matches the radius of curvature of the convex surface of the optical glass to be ground, and install a spherical grinding tool 11 on the support rod 12, which matches the radius of curvature of the concave surface of the glass block to be ground.

[0033] 2. Pour an appropriate amount of abrasive into the grinding disc 9, lift the support rod 12 upwards, place the optical glass to be ground into the two grinding discs 9 respectively, and lower the support rod 12.

[0034] 3. Turn on the switch on the controller 7, and the geared motor 5 will start to rotate. Through the transmission mechanism 6, it will drive the grinding disc 9 to rotate and drive the swing mechanism 4 to swing left and right, thereby driving the spherical grinding tool 11 to move back and forth. This will generate a pressing force between the grinding disc 9 and the spherical grinding tool 11 to grind the surface of the optical glass.

[0035] This invention relates to a coarse grinding device for optical glass. It uses the rotation of the grinding disc 9 and the oscillation of the spherical grinding tool 11 to perform oscillating grinding on the glass block, thereby achieving automated mechanical operation, effectively improving grinding efficiency, and ensuring grinding quality.

[0036] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A rough grinding apparatus for optical glass, comprising a frame (1), characterized in that, The frame (1) has a worktable (2) in the middle, and two grinding mechanisms (3) are arranged side by side on the worktable (2). The top of each of the two grinding mechanisms (3) is rotatably connected to a swing mechanism (4). The lower part of the frame (1) has a geared motor (5) for driving the grinding mechanism (3) and the swing mechanism (4). The output end of the geared motor (5) is connected to two symmetrically arranged transmission mechanisms (6). The tops of the two transmission mechanisms (6) are respectively connected to the grinding mechanism (3) and the swing mechanism (4) for driving the grinding mechanism (3) and the swing mechanism (4). 4) A controller (7) is also provided on one side of the frame (1); the grinding mechanism (3) includes a rotatable base (8) fixed on the worktable (2), a grinding disc (9) fixedly connected to the inner side of the rotatable base (8), and a coarse grinding head (10) located above the grinding disc (9). The rotatable part of the rotatable base (8) is connected to the top bearing of the transmission mechanism (6). The rotatable base (8) is used to drive the grinding disc (9) to rotate. The grinding disc (9) is used to place the optical glass to be ground. The top of the coarse grinding head (10) is movably connected to the swing mechanism (4).

2. The coarse grinding equipment for optical glass according to claim 1, characterized in that, The coarse grinding head (10) includes a spherical grinding tool (11) for grinding concave surfaces of glass. A support rod (12) is movably connected to the middle of the spherical grinding tool (11). The bottom end of the support rod (12) is a ball head. The spherical grinding tool (11) is floatingly connected to the ball head of the support rod (12). A linear bearing (13) is slidably connected to the outer surface of the support rod (12). A counterweight (14) for providing vertical downward pressure to the spherical grinding tool (11) is detachably connected to the top of the support rod (12). The linear bearing (13) is fixedly connected to the upper part of the swing mechanism (4) for transmitting the power of the swing mechanism (4) to the spherical grinding tool (11).

3. The coarse grinding equipment for optical glass according to claim 2, characterized in that, The swing mechanism (4) includes a bearing seat (15) fixed to the inner side of the frame (1), a swing disk (16) rotatably connected to the bearing seat (15), a displacement slider (17) movably connected to the surface of the swing disk (16), and a displacement connecting rod (18) connected to the top surface bearing of the displacement slider (17). The displacement slider (17) rotates along the axis of the swing disk (16) to drive the displacement connecting rod (18) to swing left and right on the horizontal plane. One end of the displacement connecting rod (18) is connected to a sliding plate (19) through a bearing. A fixed plate (20) is connected to the sliding plate (19) below the sliding plate (19) through a slide rail. The displacement connecting rod (18) is used to drive the sliding plate (19) to reciprocate relative to the fixed plate (20). The sliding plate (19) is fixedly connected to the base of the linear bearing (13). The bottom surface of the fixed plate (20) is fixed to the top of the frame (1).

4. The coarse grinding equipment for optical glass according to claim 1, characterized in that, The transmission mechanism (6) includes a drive wheel (21) fixedly connected to the output shaft of the geared motor (5), a first drive shaft (22) for driving the rotatable base (8) to rotate, and a second drive shaft (23) for driving the swing mechanism (4). The bottom ends of the first drive shaft (22) and the second drive shaft (23) are rotatably connected to the bracket in the middle of the frame (1). The middle of the first drive shaft (22) is connected by a key to a first driven wheel (24) and a second driven wheel (25) arranged in parallel. The middle of the second drive shaft (23) is connected by a key to a third driven wheel (26). The first driven wheel (24) is belt-connected to the drive wheel (21) for transmitting the power of the geared motor (5) to the rotatable base (8). The second driven wheel (25) is belt-connected to the third driven wheel (26) for transmitting the power of the geared motor (5) to the swing mechanism (4).

5. The coarse grinding equipment for optical glass according to claim 2, characterized in that, The base plate of the controller (7) is fixed to the side of the frame (1) by a threaded connection, and the controller (7) is electrically connected to the geared motor (5).

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