Small-diameter high-precision polishing grinding tool

Abstract

The invention discloses a small-diameter high-precision polishing grinding tool, which belongs to the technical field of lens processing devices, and comprises a working table, a polishing device, a polishing device, a polishing device and a polishing device, and the working table is provided with a limiting groove connected with a lens; the periphery of the bottom end of the top plate is installed on the workbench through stand columns. The grinding mechanism comprises a double-shaft motor arranged at the bottom of the top plate, and an output shaft at the bottom end of the double-shaft motor extends to the grinding head through a first rotating shaft; the cooling liquid stirring mechanism comprises a second rotating shaft connected with the top end of the double-shaft motor, one end of the second rotating shaft penetrates through the top plate and extends into the stirring barrel, and the top end of the second rotating shaft is movably connected with a telescopic rod. According to the grinding head, the technical problems that in the long-time grinding process of the grinding head, due to the fact that heat cannot be dissipated in time, the overheating phenomenon is likely to happen, the normal grinding work of the grinding head is affected, and an existing stirring mechanism is fixedly arranged, and cooling liquid can be fully mixed only through long-time stirring can be solved.

Description

Technical Field

[0001] The invention belongs to the technical field of lens grinding devices, and in particular relates to a small-diameter high-precision polishing tool. Background Art

[0002] Optical lens: The glass originally used to make lenses is the bumps on ordinary window glass or wine bottles, which are shaped like a "crown", hence the name of crown glass or crown brand glass. Optical lenses are made of high-purity silicon, boron, sodium, potassium, zinc, lead, magnesium, calcium, barium and other oxides mixed according to a specific formula, melted at high temperature in a platinum crucible, stirred evenly with ultrasound to remove bubbles; then slowly cooled for a long time to prevent internal stress in the glass block. The cooled glass block must be measured by optical instruments to check whether the purity, transparency, uniformity, refractive index and dispersion rate meet the specifications. Qualified glass blocks are heated and forged to become optical lens blanks.

[0003] Lens grinding itself is a professional processing process, which aims to adjust the shape, thickness and curvature of the lens to meet the corresponding visual and production processing requirements. During the processing of the lens, it is generally polished directly by a grinding head. However, during the long-term grinding process, the grinding head is prone to overheating because the heat cannot be dissipated in time, thus affecting the normal grinding work of the grinding head. At the same time, since the coolant needs to be modulated with additives, corresponding stirring work is required. Since the existing stirring mechanism is a fixed setting, long-term stirring is required to fully mix the coolant. Too long stirring time is not conducive to improving work efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide a small-diameter high-precision polishing abrasive tool to solve the problem that the grinding head is prone to overheating during a long grinding process because the heat cannot be dissipated in time, thereby affecting the normal grinding work of the grinding head, and the technical problem that the existing stirring mechanism is fixed and requires long-term stirring to fully mix the coolant.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A small-diameter high-precision polishing abrasive tool, comprising: A workbench, wherein the workbench is provided with a limiting groove connected to the lens; A top plate, wherein the bottom of the top plate is mounted on the workbench through columns on all sides; A grinding mechanism, the grinding mechanism comprising a double-shaft motor disposed at the bottom of the top plate, the output shaft at the bottom end of the double-shaft motor extending to the grinding head through a first rotating shaft; A coolant stirring mechanism, the coolant stirring mechanism comprising a second rotating shaft connected to the top of the dual-shaft motor, one end of the second rotating shaft passing through the top plate and extending into the mixing drum, a telescopic rod movably connected to the top of the second rotating shaft, an annular opening is provided on the edge of the outer wall of the telescopic rod, a positioning assembly is installed at the upper limit of the annular opening, and one end of the positioning assembly is fixed to the cylinder at the top of the mixing drum; The first stirring blade and the second stirring blade are installed on the outer wall of the second rotating shaft and the telescopic rod respectively. When the dual-axis motor is started, the first rotating shaft drives the grinding head to rotate and grind the lens, while the second rotating shaft drives the first stirring blade to rotate and stir, and the telescopic rod drives the second stirring blade to rotate and stir up and down under the pushing action of the cylinder; A coolant delivery mechanism, the coolant delivery mechanism comprising a pump body fixed on the top plate, one end of the conduit on the mixing drum extends to the U-shaped tube through the pump body, the extension sections on both sides of the bottom end of the U-shaped tube are connected to spray pipes through bearings, a spray head inclined toward one side of the grinding head is installed at the bottom end of the spray pipe, and the spray pipe and the first rotating shaft are fixedly connected by a rotating rod; The outer wall edge of the U-shaped tube is provided with a rotation groove connected to the bearing, and the upper and lower ends of the bearing are sleeved with sealing rings connected to the spray pipe and the U-shaped tube.

[0006] Furthermore, it also includes a sound insulation component placed at the upper and lower corners of the conduit, the sound insulation component includes a sound insulation box fixed on the conduit, a movable shaft is installed on the outer wall of the sound insulation box, one end of the movable shaft is fixed on the rotating circle, and the other end extends to the central gear on the inner wall of the sound insulation box, and the movable shafts are connected by a conveyor belt transmission.

[0007] Furthermore, the two ends of the outer wall of the central gear are respectively meshed with an upper gear plate and a lower gear plate, and one end of the upper gear plate and the lower gear plate are correspondingly connected to the upper cover body and the lower cover body through a bracket. The upper cover body and the lower cover body are movably connected through a telescopic plate, and the movable shafts rotate at the same speed.

[0008] Furthermore, sound insulation holes are provided on the upper cover body, the lower cover body and the telescopic plate, and the inner walls of the upper cover body, the lower cover body and the telescopic plate jointly form a sound insulation cavity. As the rotation drives the central gear to rotate, the volume of the sound insulation cavity in the sound insulation box increases or decreases accordingly, and the sound insulation box material is made of foam or rock wool.

[0009] Furthermore, both sides of the outer wall of the telescopic rod are integrally formed with protrusions, and the protrusions are connected with strip grooves matching with the protrusions along the height direction of the inner wall of the second rotating shaft.

[0010] Furthermore, the positioning assembly includes a first support plate fixedly connected to the piston rod at the bottom end of the cylinder, the bottom end of the first support plate is connected to a second support plate via a mounting rod in an annular array, a through hole is provided on the second support plate and is mounted on the annular opening via a limiting connection, and as the cylinder is started, the positioning assembly drives the telescopic rod to move up and down in the strip groove.

[0011] Furthermore, the first support plate and the second support plate are arranged in parallel, and both ends of the mounting rod are detachably connected to the first support plate and the second support plate, a threaded hole is opened at the top of the telescopic rod and a top cap is installed by a threaded connection, and the annular opening is located between the top cap and the telescopic rod.

[0012] Furthermore, the first stirring blade and the second stirring blade are connected to the slots on the second rotating shaft and the telescopic rod in a corresponding manner through plug-in installation.

[0013] Furthermore, electric push rods are fixedly installed on both sides of the top of the workbench, and a push rod at one end of the electric push rod extends to the arc plate used to clamp the lens.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: (1) Setting up the clamping assembly, first placing the lens in the limit groove, and through the pushing action of the electric push rod, the arc plates at both ends are used to resist and limit the lens, and can effectively clamp and fix the optical lens with a small diameter, thereby facilitating subsequent processing and polishing.

[0015] (2) A coolant stirring mechanism is provided. The stirring mechanism can fully stir and mix the coolant, thereby improving the quality of the coolant after preparation. At the same time, the dual-axis motor can drive the first stirring blade on the second rotating shaft to rotate and stir. Under the push of the cylinder, the telescopic rod can move up and down, so that the second stirring blade on the telescopic rod can rotate and stir at different heights, thereby effectively ensuring the mixing effect of the liquid after stirring. The positioning component can allow the telescopic rod to move up and down and rotate normally, and make the structural parts easy to install and disassemble, thereby improving work efficiency. In addition, the coolant can timely cool the grinding head to prevent the grinding head from generating excessive temperature during long-term operation. At the same time, it can lubricate and clean the grinding head and the lens, thereby preventing impurities from adhering to the lens, thereby improving the grinding processing accuracy to a corresponding extent.

[0016] (3) A coolant delivery mechanism is provided. Under the action of the bearing, when the first rotating shaft drives the spray pipe on the rotating rod to rotate, the bearing can ensure free rotation, and the U-shaped tube on the guide tube can supply liquid to the spray pipes at both ends of the bearing, so that the coolant can be evenly and effectively sprayed onto the grinding head. In addition, this patent adopts a rotational spraying technical solution, which can further evenly spray the coolant onto the grinding head, thereby improving the cooling effect.

[0017] (4) A sound insulation component is provided. Since the conduit for conveying liquid is directly exposed to the outside, and the liquid will generate corresponding noise due to the collision at the corner of the pipeline, a sound insulation cavity with sound insulation holes is provided at the pipeline, so that the noise of the corresponding frequency can be blocked and eliminated. By rotating the movable shaft, the upper gear plate and the lower gear plate can be used to change the volume of the sound insulation cavity between the upper cover and the lower cover, so that noise of different frequencies can be blocked. Moreover, through the transmission effect of the conveyor belt, the noise at the corner can be eliminated at the same time, thereby reducing noise pollution and providing personnel with a good working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the structure of a small diameter high precision polishing abrasive tool of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of a small diameter high precision polishing abrasive tool of the present invention. Figure 2 ; Figure 3 It is a front view of a small-diameter high-precision polishing abrasive tool of the present invention; Figure 4 The present invention Figure 1 A is an enlarged view; Figure 5 is a schematic diagram of the interior of the mixing drum of the present invention; Figure 6 It is a structural schematic diagram of the positioning assembly of the present invention; Figure 7 The present invention Figure 2 The enlarged view of point B; Figure 8 is a schematic diagram of the interior of the sound insulation box of the present invention; Fig. 9 It is a schematic diagram of the meshing transmission of the central gear of the present invention.

[0020] Figure numerals: 1, workbench; 2, top plate; 3, grinding mechanism; 4, double-axis motor; 5, first rotating shaft; 6, grinding head; 7, coolant stirring mechanism; 8, second rotating shaft; 9, stirring drum; 10, telescopic rod; 11, annular mouth; 12, positioning assembly; 13, cylinder; 14, first stirring blade; 15, second stirring blade; 16, coolant delivery mechanism; 17, pump body; 18, U-shaped tube; 19, bearing; 20, spray pipe; 21 , nozzle; 22, rotating rod; 23, sound insulation assembly; 24, sound insulation box; 25, movable shaft; 26, rotating circle; 27, central gear; 28, conveyor belt; 29, upper gear plate; 30, lower gear plate; 31, upper cover; 32, lower cover; 33, telescopic plate; 34, sound insulation hole; 35, protrusion; 36, first support plate; 37, mounting rod; 38, second support plate; 39, top cap; 40, electric push rod; 41, arc plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Reference Manual Attached Figure 1 As shown, a small diameter high precision polishing abrasive tool comprises: A workbench 1, with a limit groove connected to the lens on the workbench 1; a top plate 2, the bottom end of the top plate 2 is installed on the workbench 1 through columns on all sides; a grinding mechanism 3, the grinding mechanism 3 includes a double-axis motor 4 placed at the bottom of the top plate 2, and the output shaft of the bottom end of the double-axis motor 4 extends to the grinding head 6 through the first rotating shaft 5; electric push rods 40 are fixedly installed on both sides of the top of the workbench 1, and the push rod at one end of the electric push rod 40 extends to an arc plate 41 for clamping the lens.

[0023] The coolant stirring mechanism 7 comprises a second rotating shaft 8 connected to the top of the dual-axis motor 4, one end of the second rotating shaft 8 penetrates the top plate 2 and extends into the mixing drum 9, a telescopic rod 10 is movably connected to the top of the second rotating shaft 8, an annular opening 11 is provided on the outer wall edge of the telescopic rod 10, a positioning assembly 12 is installed at the upper limit of the annular opening 11, and one end of the positioning assembly 12 is fixed on the cylinder 13 at the top of the mixing drum 9; wherein, the first stirring blade 14 and the second stirring blade 15 are correspondingly installed on the outer walls of the second rotating shaft 8 and the telescopic rod 10, and as the dual-axis motor 4 is started, the first rotating shaft 5 drives the grinding head 6 to rotate and grind the lens, and at the same time, the second rotating shaft 8 drives the first stirring blade 14 to rotate and stir, and the telescopic rod 10 drives the second stirring blade 15 to rotate and stir up and down under the pushing action of the cylinder 13; The clamping assembly is set up, and the lens is first placed in the limiting groove. Through the pushing action of the electric push rod 40, the arc plates 41 at both ends are used to center and clamp the lens, thereby facilitating subsequent processing and polishing.

[0024] Specifically, after starting, the dual-axis motor 4 can simultaneously drive the rotation of the grinding head 6 on the first rotating shaft 5 and the first stirring blade 14 of the second rotating shaft 8, so that the lens in the limiting groove can be polished and the coolant can be mixed and stirred at the same time. The raw materials are first introduced into the mixing drum 9 through the material guide port. Under the rotation of the second rotating shaft 8, the first stirring blade 14 stirs, and under the pushing action of the cylinder 13, the second stirring blade 15 connected to the telescopic rod 10 can be adjusted to different height positions. In this way, the coolant can be fully stirred and mixed through rotation and stirring at different heights, thereby improving the processing quality of the coolant.

[0025] refer to Figure 1 , Figure 2 and Figure 4 , the coolant delivery mechanism 16 includes a pump body 17 fixed on the top plate 2, one end of the guide tube on the mixing drum 9 extends to the U-shaped tube 18 through the pump body 17, and the extension sections on both sides of the bottom end of the U-shaped tube 18 are connected to the spray pipe 20 through the bearing 19, and the bottom end of the spray pipe 20 is equipped with a nozzle 21 inclined toward the side of the grinding head 6, and the spray pipe 20 and the first rotating shaft 5 are fixedly connected by a rotating rod 22, wherein the outer wall edge of the U-shaped tube 18 is provided with a rotating groove connected to the bearing 19, and the upper and lower ends of the bearing 19 are sleeved with sealing rings connected to the spray pipe 20 and the U-shaped tube 18.

[0026] A coolant delivery mechanism 16 is provided. Under the action of the bearing 19, when the first rotating shaft 5 drives the spray pipe 20 on the rotating rod 22 to rotate, the bearing 19 can ensure free rotation, and the U-shaped tube 18 on the conduit can supply liquid to the spray pipe 20 at both ends of the bearing 19, so that the coolant can be evenly and effectively sprayed onto the grinding head 6. Moreover, this patent adopts a rotational spraying technical solution, which can further evenly spray the coolant onto the grinding head 6, thereby improving the cooling effect.

[0027] Specifically, when the processed coolant is transported to the U-shaped tube 18 through the pump body 17, it can be distributed on both sides of the grinding head 6 through the U-shaped tube 18. In addition, since a bearing 19 is provided between the U-shaped tube 18 and the spray pipe 20, it can be ensured that the spray pipe 20 drives the spray head 21 to rotate freely. In addition, a sealing ring is provided at the connection of the bearing 19 to ensure the sealing of the connection between the structural parts, thereby preventing liquid leakage. The rotating rod 22 between the spray pipe 20 and the first rotating shaft 5 can not only provide support force for the spray pipe 20, but also allow the spray pipes 20 at both ends to spray and rotate around the center of the grinding head 6, so as to effectively spray the coolant onto the grinding head 6, thereby achieving the corresponding cooling, lubrication and cleaning effects.

[0028] refer to Figure 2 , Figure 7 , Figure 8 and Fig. 9 A small-diameter high-precision polishing tool also includes a sound insulation component 23 placed at the upper and lower corners of the conduit. The sound insulation component 23 includes a sound insulation box 24 fixed on the conduit. A movable shaft 25 is installed on the outer wall of the sound insulation box 24. One end of the movable shaft 25 is fixed on the rotating circle 26, and the other end extends to the central gear 27 on the inner wall of the sound insulation box 24, and the movable shafts 25 are connected by a conveyor belt 28.

[0029] The two ends of the outer wall of the central gear 27 are respectively meshed with an upper gear plate 29 and a lower gear plate 30, and one end of the upper gear plate 29 and the lower gear plate 30 are respectively connected to the upper cover body 31 and the lower cover body 32 through a bracket. The upper cover body 31 and the lower cover body 32 are movably connected through a telescopic plate 33, and the movable shafts 25 rotate at the same speed.

[0030] Sound insulation holes 34 are provided on the upper cover body 31, the lower cover body 32 and the telescopic plate 33, and the inner walls of the upper cover body 31, the lower cover body 32 and the telescopic plate 33 jointly form a sound insulation cavity. As the rotating circle 26 drives the central gear 27 to rotate, the volume of the sound insulation cavity in the sound insulation box 24 increases or decreases accordingly, and the sound insulation box 24 is made of foam or rock wool.

[0031] A sound insulation component 23 is provided. Since the conduit for conveying liquid is directly exposed to the outside, and the liquid will generate corresponding noise at the corner of the pipeline due to the collision during conveying, a sound insulation cavity with sound insulation holes 34 is provided at the pipeline, so that the noise of the corresponding frequency can be blocked and eliminated. By rotating the movable shaft 25, in cooperation with the upper gear plate 29 and the lower gear plate 30, the volume of the sound insulation cavity between the upper cover body 31 and the lower cover body 32 can be changed, so that noises of different frequencies can be blocked, and through the transmission action of the conveyor belt 28, the noise at the corner of the pipeline can be eliminated at the same time, thereby reducing noise pollution and providing personnel with a good working environment.

[0032] During the transportation process of the coolant, corresponding noise will be generated due to corresponding collisions at the corners of the pipeline, and the noise size and frequency created by the coolant are different for different flow rates. The rotation of the rotating circle 26 drives the rotation of the central gear 27 on the movable shaft 25. Under the meshing transmission of the gears, the upper gear plate 29 and the lower gear plate 30 move in opposite directions through the upper cover body 31 and the lower cover body 32 connected to the bracket, thereby changing the volume of the sound insulation cavity. The sound insulation cavity cooperates with the sound insulation holes 34 to block and eliminate noises of different frequencies, and the sound insulation box 24 made of foam or rock wool material can further play a sound insulation role. In addition, by extension, the conveyor belt 28 can be set in multiple ways, so that the sound insulation components 23 at the corners of the pipeline at different positions can be connected, thereby playing a corresponding linkage effect.

[0033] refer to Figure 3 , Figure 5 and Figure 6 Both sides of the outer wall of the telescopic rod 10 are integrally formed with protrusions 35, and the protrusions 35 are connected with a strip groove adapted thereto along the height direction of the inner wall of the second rotating shaft 8. The positioning assembly 12 includes a first support plate 36 fixedly connected to the piston rod at the bottom end of the cylinder 13, and the bottom end of the first support plate 36 is connected to a second support plate 38 through a mounting rod 37 of an annular array. A through hole is opened on the second support plate 38 and is mounted on the annular opening 11 by a limit connection. As the cylinder 13 is started, the positioning assembly 12 drives the telescopic rod 10 to move up and down in the strip groove.

[0034] Compared with the conventional method in which a stirring blade is directly fixedly connected to the rotating shaft, the liquid can often only be stirred in a one-way direction, the raw materials cannot be stirred and mixed sufficiently and evenly, and the stirring time is also relatively long. The coolant stirring mechanism 7 of the present patent can drive the second stirring blade 15 to rotate and stir during the upward and downward adjustment of the telescopic rod 10, thereby generating a spiral liquid stirring flow, so that the liquid can be fully mixed, and the processing time is short. The positioning component 12 between the telescopic rod 10 and the cylinder 13 can serve as a connecting medium between the two, and at the same time, the second support plate 38 can be connected to the annular opening 11 of the telescopic rod 10, and the annular opening 11 is provided with a rotating groove connected to the second support plate 38. In this way, the telescopic rod 10 can rotate freely on the second support plate 38, and under the pushing action of the cylinder 13, the second support plate 38 can also drive the telescopic rod 10 to move up and down. When installing the positioning assembly 12, the mounting rod 37 is positioned and connected between the first support plate 36 and the second support plate 38, and then the through hole of the second support plate 38 is abutted and connected with the annular opening 11 on the telescopic rod 10. At this time, the top cap 39 is installed on the top of the telescopic rod 10 by means of a threaded connection, thereby shielding and protecting the second support plate 38, so that the telescopic rod 10 is separated from the annular opening 11 during the rotation process, and the entire positioning assembly 12 is easy to install, has a good positioning effect, and is easy to disassemble.

[0035] A coolant stirring mechanism 7 is provided, which can fully stir and mix the coolant, thereby improving the quality of the coolant after preparation. At the same time, the dual-axis motor 4 can drive the first stirring blade 14 on the second rotating shaft 8 to rotate and stir. Under the driving action of the cylinder 13, the telescopic rod 10 can be moved up and down, so that the second stirring blade 15 on the telescopic rod 10 can be rotated and stirred at different heights, thereby effectively ensuring the mixing effect of the liquid after stirring. The positioning component 12 can allow the telescopic rod 10 to move up and down and rotate normally, and makes the structural parts easy to install and disassemble, thereby improving work efficiency. The coolant can timely cool the grinding head 6 to prevent the grinding head 6 from generating excessively high temperature during long-term operation. At the same time, it can lubricate and clean the grinding head 6 and the lens, thereby preventing impurities from adhering to the lens, and improving the grinding processing accuracy to a corresponding extent.

[0036] The first support plate 36 and the second support plate 38 are arranged in parallel, and both ends of the mounting rod 37 are connected to the first support plate 36 and the second support plate 38 in a detachable manner. A threaded hole is opened at the top of the telescopic rod 10 and a top cap 39 is installed by threaded connection, and the annular opening 11 is located between the top cap 39 and the telescopic rod 10. The first stirring blade 14 and the second stirring blade 15 are connected to the slots on the second rotating shaft 8 and the telescopic rod 10 respectively by plug-in installation.

[0037] The above-mentioned stirring blades are connected by plug-in fixing, which can facilitate the installation and fixation of the structural parts. At the same time, the stirring blades can also be connected by locking and fixing with bolt assemblies and positioning pin assemblies. Since the bolt connection and positioning pin locking and fixing methods are conventional technical means for technical personnel in this field, they will not be described in detail here.

[0038] The above are only preferred specific implementation modes 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 solutions and inventive concepts 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.

[0039] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A small diameter high precision polishing abrasive tool, characterized in that: include: A workbench (1), wherein the workbench (1) is provided with a limiting groove connected to the lens; A top plate (2), wherein the bottom of the top plate (2) is mounted on the workbench (1) via columns on all sides; A grinding mechanism (3), the grinding mechanism (3) comprising a double-shaft motor (4) disposed at the bottom of the top plate (2), the output shaft at the bottom end of the double-shaft motor (4) extending to a grinding head (6) through a first rotating shaft (5); A coolant stirring mechanism (7), the coolant stirring mechanism (7) comprising a second rotating shaft (8) connected to the top of the dual-shaft motor (4), one end of the second rotating shaft (8) passing through the top plate (2) and extending into the stirring drum (9), a telescopic rod (10) being movably connected to the top of the second rotating shaft (8), an annular opening (11) being provided on the outer wall edge of the telescopic rod (10), a positioning assembly (12) being installed at the upper limit position of the annular opening (11), one end of the positioning assembly (12) being fixed to a cylinder (13) at the top of the stirring drum (9); The outer walls of the second rotating shaft (8) and the telescopic rod (10) are respectively provided with a first stirring blade (14) and a second stirring blade (15); when the dual-shaft motor (4) is started, the first rotating shaft (5) drives the grinding head (6) to rotate and grind the lens, while the second rotating shaft (8) drives the first stirring blade (14) to rotate and stir, and the telescopic rod (10) drives the second stirring blade (15) to rotate and stir up and down under the pushing action of the cylinder (13); A coolant delivery mechanism (16), the coolant delivery mechanism (16) comprising a pump body (17) fixed on the top plate (2), one end of the guide tube on the mixing drum (9) extending through the pump body (17) to the U-shaped tube (18), the extension sections on both sides of the bottom end of the U-shaped tube (18) are connected to a spray pipe (20) through bearings (19), the bottom end of the spray pipe (20) is provided with a spray head (21) inclined toward one side of the grinding head (6), and the spray pipe (20) and the first rotating shaft (5) are fixedly connected via a rotating rod (22); The outer wall edge of the U-shaped tube (18) is provided with a rotation groove connected to the bearing (19), and the upper and lower ends of the bearing (19) are sleeved with sealing rings connected to the spray pipe (20) and the U-shaped tube (18).

2. A small diameter high precision polishing abrasive tool according to claim 1, characterized in that: It also includes a sound insulation component (23) placed at the corners of the upper and lower ends of the conduit, the sound insulation component (23) includes a sound insulation box (24) fixed on the conduit, a movable shaft (25) is installed on the outer wall of the sound insulation box (24), one end of the movable shaft (25) is fixed on the rotating circle (26), and the other end extends to the central gear (27) on the inner wall of the sound insulation box (24), and the movable shafts (25) are connected by transmission through a conveyor belt (28).

3. A small diameter high precision polishing abrasive tool according to claim 2, characterized in that: An upper gear plate (29) and a lower gear plate (30) are respectively meshed and driven at two ends of an outer wall of the central gear (27); one end of the upper gear plate (29) and one end of the lower gear plate (30) are respectively connected to an upper cover body (31) and a lower cover body (32) via a bracket; the upper cover body (31) and the lower cover body (32) are movably connected via a telescopic plate (33), and the movable shafts (25) rotate at the same speed.

4. A small diameter high precision polishing abrasive tool according to claim 3, characterized in that: The upper cover body (31), the lower cover body (32) and the telescopic plate (33) are all provided with sound insulation holes (34), and the inner walls of the upper cover body (31), the lower cover body (32) and the telescopic plate (33) jointly form a sound insulation cavity, and as the rotating circle (26) drives the central gear (27) to rotate, the volume of the sound insulation cavity in the sound insulation box (24) increases or decreases accordingly, and the material of the sound insulation box (24) is made of foam or rock wool.

5. A small diameter high precision polishing abrasive tool according to claim 1, characterized in that: Both sides of the outer wall of the telescopic rod (10) are integrally formed with protrusions (35), and the protrusions (35) are connected to a strip groove matching the second rotating shaft (8) along the height direction of the inner wall of the second rotating shaft (8).

6. A small diameter high precision polishing abrasive tool according to claim 5, characterized in that: The positioning assembly (12) comprises a first support plate (36) fixedly connected to a piston rod at the bottom end of the cylinder (13); the bottom end of the first support plate (36) is connected to a second support plate (38) via a mounting rod (37) in an annular array; the second support plate (38) is provided with a through hole and is mounted on the annular opening (11) by means of a limit connection; when the cylinder (13) is started, the positioning assembly (12) drives the telescopic rod (10) to move up and down in the strip groove.

7. A small diameter high precision polishing abrasive tool according to claim 6, characterized in that: The first support plate (36) and the second support plate (38) are arranged in parallel, and both ends of the mounting rod (37) are detachably connected to the first support plate (36) and the second support plate (38), a threaded hole is formed at the top end of the telescopic rod (10) and a top cap (39) is mounted thereon by means of a threaded connection, and the annular opening (11) is located between the top cap (39) and the telescopic rod (10).

8. A small diameter high precision polishing abrasive tool according to claim 1, characterized in that: The first stirring blade (14) and the second stirring blade (15) are connected to the slots on the second rotating shaft (8) and the telescopic rod (10) respectively by means of plug-in installation.

9. A small diameter high precision polishing abrasive tool according to claim 1, characterized in that: Electric push rods (40) are fixedly mounted on both sides of the top of the workbench (1), and a push rod at one end of the electric push rod (40) extends to an arc-shaped plate (41) for clamping the lens.

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