Polishing device for lens cone

Abstract

The grinding device comprises a shell, a tooth block disc is rotationally connected to the middle area of the top of the shell, a driving structure used for driving the tooth block disc to rotate is installed on one side of the top of the shell, and a plurality of bearing barrels used for containing the lens cones are installed on the tooth block disc at equal angles. According to the grinding device for the lens cone, through the arrangement of the grinding mechanism, an operator can adjust the control screw rod in advance according to the aperture size change of the lens cone, so that the control screw rod moves on the box body, and the concave block is pushed to move by a corresponding distance. The movement leads to dislocation between the upper groove and the lower groove, and the movement track of the end of the ball of the connecting rod in a sliding way formed by the grooves is changed. Due to the accurate control, the electric telescopic rod can push the grinding equipment to move downwards according to a preset track, accurate grinding of the inner wall of the lens cone is achieved, and high quality and consistency of products are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of sight mirror processing equipment, in particular to a grinding device for a lens barrel. Background Art

[0002] A scope, also known as an optical sighting device, is an optical device mounted on a shooting tool to improve the accuracy of shooting. There are many types of scopes, including telescopic scopes, collimating scopes, and reflex scopes. They magnify or directly display the target through an optical lens system to help shooters aim more accurately.

[0003] The machining of the barrel is a key step in the production of riflescopes. The barrel needs to have precise dimensions and a smooth inner wall to ensure the optical performance and durability of the riflescope. However, machining the barrel is not an easy task. The different calibers from one end of the riflescope to the other and the specific dimensional parameters make the grinding process particularly delicate. During the grinding process, excessive or shallow grinding must be avoided to avoid affecting the product quality.

[0004] Existing grinding equipment and methods have some limitations. First, they usually require manual clamping of the lens barrel, which is not only time-consuming and labor-intensive. Second, after grinding, the next lens barrel to be polished needs to be manually disassembled and clamped, which is an inefficient process. In addition, the dust generated during the grinding process will pollute the processing environment and pose a threat to the respiratory health of workers.

[0005] In view of the above problems, it is urgent to carry out innovative design based on the original grinding device. Summary of the invention

[0006] The technical solution of the present invention aims at the technical problem that the existing technical solution is too single, and provides a grinding device for a lens barrel to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a grinding device for a lens barrel, comprising a shell, a gear disc is rotatably connected to the middle area of ​​the top of the shell, and a driving structure for driving the gear disc to rotate is installed on one side of the top of the shell, a plurality of supporting tubes for placing the lens barrel are installed at equal angles on the gear disc, and a fixed structure for limiting the position of the lens barrel is installed on each supporting tube, a rotating mechanism for driving the supporting tube to rotate is installed in the shell, and a dust suction structure for collecting dust generated by grinding in the supporting tube is provided in the shell, a support frame is connected to the other side of the top of the shell, and a grinding mechanism for grinding the lens barrel is installed on the support frame.

[0008] Preferably, the driving structure includes a driving motor and a driving gear. The driving motor is installed on the top of the shell, and the output end of the driving motor is connected to the driving gear, and the driving gear is meshingly connected to a gear disc. The supporting cylinder and the gear disc are rotatably connected, and gears are provided at equal angles on the outer wall of the supporting cylinder.

[0009] Preferably, the fixed structure includes a cylinder, an adjusting screw, a contact ball, a return spring, a slide groove, an insertion rod, a compression spring, a fixed trigger block, and a disassembly trigger block. A plurality of slidingly connected cylinders are provided at equal angles on the circumferential outer wall of each of the supporting cylinders, and an adjusting screw is threadedly connected in each cylinder, and a contact ball for contacting and preventing scratches on the lens barrel is connected to the end of each adjusting screw, a return spring is connected between each end of the cylinder and the outer wall of the supporting cylinder, a plurality of slide grooves are opened on each of the supporting cylinders corresponding to the cylinder, and an insertion rod is slidably connected in each slide groove, and a compression spring is connected between each insertion rod and the slide groove, and a fixed trigger block in contact with the cylinder and a disassembly trigger block in contact with the insertion rod are respectively connected to the top of the shell.

[0010] Preferably, the cylinder is arranged as a "T"-shaped structure, and the outer wall of the cylinder is arranged with helical teeth, the end of the insertion rod is arranged with helical teeth engaged with the helical teeth on the outer wall of the cylinder, and the inclined surface of the helical teeth at the end of the insertion rod faces outside the cylinder, and the inclined surface of the helical teeth outside the cylinder is opposite to it, and the contact area between the end of the cylinder and the fixed trigger block is arranged as an arc surface.

[0011] Preferably, the insertion rod is configured as an "L"-shaped structure, and one end of the insertion rod outside the cylinder is configured as an arc-shaped structure, and the contact area between the end of the insertion rod and the disassembly trigger block is configured as an arc surface.

[0012] Preferably, the rotating mechanism includes a control motor, a bevel gear set, a cavity, a vertical shaft, and a control gear. The control motor is installed on the outer wall of the shell, and the output end of the control motor is connected to the bevel gear set through a rotating shaft. The bevel gear set is located in the cavity, and the cavity is opened in the shell. The bevel gear set is connected to the vertical shaft, and the vertical shaft is connected to the control gear, and the tooth block on the side of the control gear is meshed with the tooth block on the outer wall of the carrying cylinder.

[0013] Preferably, the dust suction structure includes a horizontal axis, a fan blade disk, an air flow groove, and a collection box. The bevel gear set is connected to the horizontal axis, and the end of the horizontal axis is connected to the fan blade disk, and the fan blade disk is located in the air flow groove. The air flow groove is opened in the shell, and a collection box is installed on the outer wall of the shell, and the collection box is connected to the air flow groove. The diameter of the bevel gear of the bevel gear set located on the vertical axis is larger than the diameter of the bevel gear connected to the control motor and the horizontal axis.

[0014] Preferably, the grinding mechanism includes a box body, a concave block, a control screw, a groove, a connecting rod, a connecting block, a movable groove, a movable block, an electric telescopic rod, and a grinding device. The support frame is connected to the box body, and a plurality of concave blocks that are stacked one on one are provided in the box body. Each of the concave blocks is rotatably connected to a control screw, and the end of the control screw is threadedly connected to one side of the outer wall of the box body, a connecting rod is slidably connected in the concave block, and each of the inner walls of the concave block is symmetrically provided with a groove on both sides, and one end of the connecting rod slides in the groove, and the end of the connecting rod located in the groove is set to a spherical shape, the other end of the connecting rod passes through the outer wall of the box body and is connected to the connecting block, a movable groove is provided on the connecting block, and the movable block is slidably connected in the movable groove, the end of the movable block passes through the outer wall of the connecting block and is connected to the electric telescopic rod, and the electric telescopic rod is installed on the support frame, and the connecting block is connected to the grinding device for grinding the lens barrel.

[0015] Compared with the prior art, the beneficial effect of the present invention is that the grinding device for the lens barrel, through the arrangement of the gear disc, the driving structure and the supporting cylinder, can realize the automatic rotation and transmission of the lens barrel, so that batches of lens barrels can be transported to the grinding equipment in sequence and in an orderly manner for precision processing, which significantly improves the grinding efficiency.

[0016] In addition, the fixing structure in the device can automatically clamp and fix the lens barrel while the gear disc rotates to transmit the lens barrel, ensuring the stability of the lens barrel during the grinding process. After the grinding is completed, the lens barrel can be automatically released, making it easy for workers to use it, thus avoiding the tedious labor of manually fixing and disassembling the lens barrel one by one, reducing labor intensity and improving work efficiency.

[0017] At the same time, through the setting and coordination of the rotating mechanism and the dust collection structure, the bearing tube can be driven to rotate, so that every area of ​​the inner wall of the lens tube can be evenly contacted with the grinding equipment, ensuring the comprehensiveness and uniformity of the grinding. At the same time, the dust generated during the grinding process is effectively sucked into the collection box through the air flow slot and filtered and collected, effectively avoiding dust pollution to the working environment and protecting the respiratory health of workers.

[0018] Through the setting of the grinding mechanism, the operator can adjust the control screw in advance according to the change of the diameter size of the lens barrel, so that it can move on the box body, thereby pushing the concave block to move the corresponding distance. This movement causes the misalignment between the upper and lower grooves, changing the movement trajectory of the end of the connecting rod ball in the slideway composed of the grooves. This precise control enables the electric telescopic rod to push the grinding equipment down according to the predetermined trajectory, realize the precise grinding of the inner wall of the lens barrel, and ensure the high quality and consistency of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the front cross-sectional structure of the present invention; Figure 2It is a front view structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the top view of the gear disc of the present invention; Figure 4 For the present invention Figure 1 The enlarged structural diagram at A in the middle; Figure 5 It is a schematic diagram of the side cross-sectional structure of the fixed trigger block of the present invention; Figure 6 For the present invention Figure 5 The enlarged structural diagram at B in the middle; Figure 7 This is a schematic diagram of the side cross-sectional structure of the disassembly trigger block of the present invention; Figure 8 For the present invention Figure 7 The enlarged structural diagram at C in the middle; Fig. 9 It is a schematic diagram of the cross-sectional structure of the box body of the present invention; Fig.10 It is a schematic diagram of the top view structure of the concave block of the present invention; Fig.11 It is a schematic diagram of the three-dimensional structure of the fan blade disk of the present invention.

[0020] In the figure: 1, housing; 2, gear block disc; 3, driving structure; 301, driving motor; 302, driving gear; 4, bearing cylinder; 5, fixing structure; 501, cylinder; 502, adjusting screw; 503, contact ball; 504, return spring; 505, slide groove; 506, plug rod; 507, pressing spring; 508, fixing trigger block; 509, removing trigger block; 6, rotating mechanism; 601, control motor; 602, bevel gear set; 603, cavity; 604, vertical axis; 605, control gear; 7, dust suction structure; 701, horizontal axis; 702, fan disc; 703, air flow slot; 704, collection box; 8, support frame; 9, grinding mechanism; 901, box; 902, concave block; 903, control screw; 904, groove; 905, connecting rod; 906, connecting block; 907, moving slot; 908, moving block; 909, electric telescopic rod; 910, grinding equipment. 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] See also Figure 1-Figure 11The present invention provides a technical solution: a grinding device for a lens barrel, comprising a housing 1, a tooth block disc 2, a driving structure 3, a driving motor 301, a driving gear 302, a bearing cylinder 4, a fixing structure 5, a barrel 501, an adjusting screw 502, a contact ball 503, a reset spring 504, a slide groove 505, an insertion rod 506, a pressing spring 507, a fixed trigger block 508, a disassembly trigger block 509, a rotating mechanism 6, a control motor 601, a bevel gear set 602, a cavity 603, a vertical shaft 604, a control gear 605, a dust suction structure 7, a horizontal shaft 701, a fan blade disc 702, an air flow groove 703, a collection box 704, a support frame 8, a grinding mechanism 9, a box 901, a concave block 902, a control screw 903, a groove 904, connecting rod 905, connecting block 906, moving groove 907, moving block 908, electric telescopic rod 909, grinding equipment 910, the middle area on the top of the shell 1 is rotatably connected with a gear disc 2, and a driving structure 3 for driving the gear disc 2 to rotate is installed on one side of the top of the shell 1, a number of supporting tubes 4 for placing the lens barrel are installed at equal angles on the gear disc 2, and each supporting tube 4 is installed with a fixing structure 5 for limiting the lens barrel, a rotating mechanism 6 for driving the supporting tube 4 to rotate is installed in the shell 1, and a dust suction structure 7 for collecting dust generated by grinding in the supporting tube 4 is provided in the shell 1, a support frame 8 is connected to the other side of the top of the shell 1, and a grinding mechanism 9 for grinding the lens barrel is installed on the support frame 8.

[0023] The driving structure 3 includes a driving motor 301 and a driving gear 302. The driving motor 301 is installed on the top of the shell 1, and the output end of the driving motor 301 is connected to the driving gear 302, and the driving gear 302 is meshedly connected with the gear disc 2. The supporting cylinder 4 and the gear disc 2 are rotatably connected, and gears are provided at equal angles on the outer wall of the supporting cylinder 4.

[0024] The fixing structure 5 includes a cylinder 501, an adjusting screw 502, a contact ball 503, a reset spring 504, a slide groove 505, an insert rod 506, a compression spring 507, a fixing trigger block 508, and a disassembly trigger block 509. A plurality of slidingly connected cylinders 501 are provided at equal angles on the circumferential outer wall of each bearing cylinder 4 (i.e., around the center line of the bearing cylinder), and an adjusting screw 502 is threadedly connected in each cylinder 501, and each adjusting screw 502 is connected at the end thereof with a contact and scratch-proof The contact ball 503 of the lens barrel, a return spring 504 is connected between the end of each cylinder body 501 and the outer wall of the supporting cylinder 4, and each supporting cylinder 4 is provided with a plurality of slide grooves 505 corresponding to the cylinder body 501, and each slide groove 505 is slidably connected with an insertion rod 506, and a clamping spring 507 is connected between each insertion rod 506 and the slide groove 505, and the top of the shell 1 is respectively connected with a fixed trigger block 508 in contact with the cylinder body 501 and a disassembly trigger block 509 in contact with the insertion rod 506.

[0025] The cylinder 501 is configured as a "T"-shaped structure, and the outer wall of the cylinder 501 is provided with helical teeth, the end of the insertion rod 506 is provided with helical teeth that engage with the helical teeth on the outer wall of the cylinder 501, and the inclined surface of the helical teeth at the end of the insertion rod 506 faces the outside of the cylinder 501, and the inclined surface of the helical teeth outside the cylinder 501 is opposite to it, and the contact area between the end of the cylinder 501 and the fixed trigger block 508 is configured as an arc surface.

[0026] The insertion rod 506 is configured as an "L"-shaped structure, and one end of the insertion rod 506 outside the cylinder 501 is configured as an arc-shaped structure, and the contact area between the end of the insertion rod 506 and the disassembly trigger block 509 is configured as an arc surface.

[0027] The rotating mechanism 6 includes a control motor 601, a bevel gear set 602, a cavity 603, a vertical shaft 604, and a control gear 605. The control motor 601 is installed on the outer wall of the shell 1, and the output end of the control motor 601 is connected to the bevel gear set 602 through a rotating shaft. The bevel gear set 602 is located in the cavity 603, and the cavity 603 is opened in the shell 1. The bevel gear set 602 is connected to the vertical shaft 604, and the vertical shaft 604 is connected to the control gear 605, and the tooth block on the side of the control gear 605 is meshed with the tooth block on the outer wall of the carrying tube 4.

[0028] The dust collection structure 7 includes a horizontal axis 701, a fan blade disk 702, an air flow groove 703, and a collection box 704. The horizontal axis 701 is connected to the bevel gear set 602, and the fan blade disk 702 is connected to the end of the horizontal axis 701, and the fan blade disk 702 is located in the air flow groove 703. The air flow groove 703 is opened in the shell 1, and the collection box 704 is installed on the outer wall of the shell 1, and the collection box 704 is connected to the air flow groove 703. The diameter of the bevel gear of the bevel gear set 602 located on the vertical axis 604 is larger than the diameter of the bevel gear connected to the control motor 601 and the horizontal axis 701.

[0029] The grinding mechanism 9 includes a box 901, a concave block 902, a control screw 903, a groove 904, a connecting rod 905, a connecting block 906, a moving groove 907, a moving block 908, an electric telescopic rod 909, and a grinding device 910. The support frame 8 is connected to the box 901, and a plurality of concave blocks 902 that are superimposed one on another are arranged in the box 901. Each concave block 902 is rotatably connected to a control screw 903, and the end of the control screw 903 is threadedly connected to one side of the outer wall of the box 901, and a connecting rod 905 is slidably connected in the concave block 902. The inner wall of each concave block 902 A groove 904 is symmetrically provided on each side, and one end of the connecting rod 905 slides in the groove 904, and the end portion of the connecting rod 905 located in the groove 904 is set to be spherical, and the other end of the connecting rod 905 passes through the outer wall of the box body 901 and is connected to a connecting block 906, a movable groove 907 is provided on the connecting block 906, and a movable block 908 is slidably connected in the movable groove 907, the end of the movable block 908 passes through the outer wall of the connecting block 906 and is connected to an electric telescopic rod 909, and the electric telescopic rod 909 is installed on the support frame 8, and a grinding device 910 for grinding the lens barrel is connected to the connecting block 906.

[0030] Working principle: According to Figure 1 As shown, the device is placed in the working area. First, according to the size change of the lens barrels of this batch, the corresponding control screw 903 on the box 901 is rotated to push the concave block 902 to move, so that the upper and lower grooves are misaligned, corresponding to the size change of the inner wall of the lens barrel; Then, the lens barrels of the batch are placed one by one into the carrier tube 4, and the driving motor 301 is started to drive the driving gear 302 to rotate. The driving gear 302 drives the carrier tube 4 and the lens barrels therein to rotate and transport them to the polishing device 910; When the carrier tube 4 loaded with the lens barrel moves to the bottom of the grinding device 910, the driving motor 301 stops driving the gear block disk 2 to rotate, and the control motor 601 starts to drive the vertical shaft 604 and the control gear 605 to rotate through the bevel gear set 602, and the control gear 605 drives all the carrier tubes 4 meshed on the side to rotate; At the same time, the electric telescopic rod 909 pushes the started grinding device 910 to move downward into the interior of the lens barrel, and the end of the connecting rod 905 moves in the groove 904 to push the grinding device 910 to move horizontally, so as to accurately grind the inner wall of the lens barrel; At this time, as the carrier tube 4 rotates, the grinding device 910 can fully grind the inner wall of the lens barrel. At the same time, the carrier tube 4 near the fixed trigger block 508 is in the process of rotating. Through the squeezing of the fixed trigger block 508 and the rotation of the carrier tube 4, the cylinder body 501 on the four sides of the carrier tube 4 is pushed to move into the carrier tube 4. The return spring 504 is compressed and bound by force, so that the adjusting screw 502 and the contact ball 503 on the cylinder body 501 are close to the lens barrel and fixed. Similarly, the lens barrel after grinding is in the process of transmission with the rotation of the gear disc 2 and the carrier tube 4. When the trigger block 509 is disassembled, the carrier tube 4 rotates, and the insertion rod 506 is squeezed by the disassembly of the trigger block 509 to break away from the clamping limit of the cylinder body 501. The return spring 504 drives the cylinder body 501 to reset and move to the outside of the carrier tube 4, breaking away from the fixation of the polished lens barrel, which is convenient for taking. In addition, the rotation of the rotating mechanism 6 drives the horizontal axis 701 and the fan disk 702 to rotate through the rotation of the bevel gear set 602, driving the air in the air flow groove 703 to flow to the collection box 704, so that the dust generated by the lens barrel being polished in the supporting tube 4 passes through the air flow groove 703 through the through hole at the bottom of the supporting tube 4 and enters the collection box 704 for filtration and collection. This is the working principle of the polishing device for the lens barrel.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A grinding device for a lens barrel, comprising a housing (1), characterized in that: A gear disc (2) is rotatably connected to the middle area of ​​the top of the shell (1), and a driving structure (3) for driving the gear disc (2) to rotate is installed on one side of the top of the shell (1). A plurality of supporting tubes (4) for placing a lens barrel are installed at equal angles on the gear disc (2), and each supporting tube (4) is installed with a fixing structure (5) for limiting the position of the lens barrel. A rotating mechanism (6) for driving the supporting tube (4) to rotate is installed in the shell (1), and a dust collecting structure (7) for collecting dust generated by grinding in the supporting tube (4) is provided in the shell (1). A support frame (8) is connected to the other side of the top of the shell (1), and a grinding mechanism (9) for grinding the lens barrel is installed on the support frame (8).

2. A grinding device for a lens barrel according to claim 1, characterized in that: The driving structure (3) comprises a driving motor (301) and a driving gear (302); the driving motor (301) is mounted on the top of the housing (1); the output end of the driving motor (301) is connected to the driving gear (302); the driving gear (302) is meshingly connected to a toothed disc (2); the bearing cylinder (4) and the toothed disc (2) are rotatably connected; and toothed discs are provided at equal angles on the outer wall of the bearing cylinder (4).

3. A grinding device for a lens barrel according to claim 1, characterized in that: The fixing structure (5) comprises a barrel (501), an adjusting screw (502), a contact ball (503), a reset spring (504), a slide groove (505), an insert rod (506), a compression spring (507), a fixing trigger block (508), and a removal trigger block (509). A plurality of slidably connected barrels (501) are provided at equal angles on the circumferential outer wall of each of the bearing barrels (4), and an adjusting screw (502) is threadedly connected inside each of the barrels (501), and a contact ball (503) is connected at the end of each of the adjusting screws (502) for contacting and preventing the lens barrel from being scratched. 3), a return spring (504) is connected between the end of each cylinder (501) and the outer wall of the supporting cylinder (4), a plurality of slide grooves (505) are provided on each supporting cylinder (4) in correspondence with the cylinder (501), and a plug rod (506) is slidably engaged in each slide groove (505), and a clamping spring (507) is connected between each plug rod (506) and the slide groove (505), and a fixed trigger block (508) in contact with the cylinder (501) and a disassembly trigger block (509) in contact with the plug rod (506) are respectively connected to the top of the shell (1).

4. A grinding device for a lens barrel according to claim 3, characterized in that: The cylinder (501) is configured as a "T"-shaped structure, and the outer wall of the cylinder (501) is provided with oblique teeth, the end of the insertion rod (506) is provided with oblique teeth that engage with the oblique teeth of the outer wall of the cylinder (501), and the inclined surface of the oblique teeth at the end of the insertion rod (506) faces the outside of the cylinder (501), and the inclined surface of the oblique teeth outside the cylinder (501) is opposite to it, and the contact area between the end of the cylinder (501) and the fixed trigger block (508) is configured as an arc surface.

5. A grinding device for a lens barrel according to claim 3, characterized in that: The insertion rod (506) is configured as an "L"-shaped structure, and one end of the insertion rod (506) located outside the cylinder (501) is configured as an arc-shaped structure, and the contact area between the end of the insertion rod (506) and the disassembly trigger block (509) is configured as an arc surface.

6. A grinding device for a lens barrel according to claim 1, characterized in that: The rotating mechanism (6) comprises a control motor (601), a bevel gear set (602), a cavity (603), a vertical shaft (604), and a control gear (605); the control motor (601) is mounted on the outer wall of the housing (1); the output end of the control motor (601) is connected to the bevel gear set (602) via a rotating shaft; the bevel gear set (602) is located in the cavity (603); the cavity (603) is opened in the housing (1); the bevel gear set (602) is connected to the vertical shaft (604); the vertical shaft (604) is connected to the control gear (605); and the tooth block on the side of the control gear (605) is meshed with the tooth block on the outer wall of the bearing tube (4).

7. A grinding device for a lens barrel according to claim 6, characterized in that: The dust collecting structure (7) comprises a transverse axis (701), a fan blade disc (702), an air flow groove (703), and a collection box (704); the transverse axis (701) is connected to the bevel gear set (602); the end of the transverse axis (701) is connected to the fan blade disc (702); the fan blade disc (702) is located in the air flow groove (703); the air flow groove (703) is opened in the housing (1); the outer wall of the housing (1) is provided with a collection box (704); the collection box (704) is connected to the air flow groove (703); the diameter of the bevel gear of the bevel gear set (602) located on the vertical axis (604) is larger than the diameter of the bevel gear connected to the control motor (601) and the transverse axis (701).

8. A grinding device for a lens barrel according to claim 1, characterized in that: The grinding mechanism (9) comprises a box (901), a recessed block (902), a control screw (903), a recessed groove (904), a connecting rod (905), a connecting block (906), a movable groove (907), a movable block (908), an electric telescopic rod (909), and a grinding device (910). The support frame (8) is connected to the box (901), and a plurality of recessed blocks (902) are arranged in the box (901) and are stacked one on top of the other. Each of the recessed blocks (902) is rotatably connected to a control screw (903), and the end of the control screw (903) is threadedly connected to one side of the outer wall of the box (901). A connecting rod (905) is slidably connected to the inside of the recessed block (902). Each of the recessed blocks (90 2) A groove (904) is symmetrically provided on both sides of the inner wall, and one end of the connecting rod (905) slides in the groove (904), and the end of the connecting rod (905) located in the groove (904) is set to be spherical, the other end of the connecting rod (905) passes through the outer wall of the box body (901) and is connected to a connecting block (906), a movable groove (907) is provided on the connecting block (906), and a movable block (908) is slidably connected in the movable groove (907), the end of the movable block (908) passes through the outer wall of the connecting block (906) and is connected to an electric telescopic rod (909), and the electric telescopic rod (909) is installed on the support frame (8), and the connecting block (906) is connected to a grinding device (910) for grinding the lens barrel.

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