Optical precision machining rotary positioning platform with calibration structure

Abstract

The utility model relates to the technical field of optical precision machining, in particular to an optical precision machining rotary positioning platform with a calibration structure, which comprises a workbench, an auxiliary clamping mechanism is arranged on the surface of the workbench, the auxiliary clamping mechanism comprises a movable groove arranged on the surface of the workbench, and a movable plate is slidably connected in the movable groove. The top end of the movable plate is rotationally connected with a rotating table, the top end of the rotating table is fixedly connected with an adsorption air pump, a clamping table is arranged above the adsorption air pump, a plurality of sets of fixing cylinders are fixedly connected into the clamping table, and the interiors of the fixing cylinders are rotationally connected with adjusting bolts. Through cooperation of the workbench and the auxiliary clamping mechanism, the special-shaped lens is preliminarily adsorbed through cooperation of the adsorption air pump and the suction cup, the electric telescopic rod is started to drive the clamping table and the clamping telescopic rod to move downwards, and the adjusting bolt is rotated to drive the movable threaded block to ascend and descend; therefore, the contact between the contact head and the lens is more stable.

Description

Technical Field

[0001] This utility model relates to the field of optical precision machining technology, specifically to an optical precision machining rotary positioning platform with a calibration structure. Background Technology

[0002] Optical precision machining is a technology based on high-precision manufacturing processes, aiming to produce optical components (such as lenses, prisms, and mirrors) with nanometer or sub-nanometer precision, low surface roughness, and high surface quality. Its core characteristics include: extremely high machining accuracy requirements: nanometer-level control of shape accuracy, dimensional accuracy, and surface quality is required to meet the stringent performance demands of modern optical systems; and diverse process technologies: encompassing grinding and polishing, ultra-precision turning / milling, laser processing, optical coating, computer-controlled surface forming, and other technologies, combined with physical or chemical methods to complete the processing at room temperature or under specific conditions.

[0003] In the process of optical precision processing, lenses need to be clamped and fixed. Vacuum adsorption is used to fix the lenses to a rotating platform. However, when dealing with irregularly shaped lenses, the irregular geometric shape (such as square) makes it difficult to achieve a complete seal, which makes the processing unstable. Modifying the adsorption pump is costly and reduces economic efficiency.

[0004] Therefore, it is necessary to invent an optical precision machining rotary positioning platform with a calibration structure to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an optical precision machining rotary positioning platform with a calibration structure. By cooperating with the worktable and the auxiliary clamping mechanism, the stability of adsorption of irregularly shaped lenses is improved. This solves the problem in the prior art where the irregular geometric shape of the irregularly shaped lenses (such as squares) makes sealing difficult, resulting in instability during processing. Modifying the adsorption air pump is also costly and reduces economic efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an optical precision machining rotary positioning platform with a calibration structure, comprising a worktable, an auxiliary clamping mechanism on the surface of the worktable, the auxiliary clamping mechanism including a movable groove formed on the surface of the worktable, a movable plate slidably connected inside the movable groove, a rotary table rotatably connected to the top of the movable plate, an adsorption air pump fixedly connected to the top of the rotary table, a clamping platform above the adsorption air pump, a plurality of fixed cylinders fixedly connected inside the clamping platform, an adjusting bolt rotatably connected inside the fixed cylinder, a movable threaded block threadedly connected to the outer wall of the bottom end of the adjusting bolt, the movable threaded block slidably connected inside the fixed cylinder, and a clamping telescopic rod fixedly connected to the bottom end of the movable threaded block. The fixed cylinders and other parts assist the rotary table in stabilizing the lens's posture, and the adjusting bolts and movable threaded blocks calibrate the lens's posture.

[0007] Preferably, a spring is sleeved on the outer wall of the clamping telescopic rod, and an abutment head is fixedly connected to the bottom end of the clamping telescopic rod, so that the clamping is more stable by the elasticity of the spring.

[0008] Preferably, the top of the workbench is fixedly connected to a fixed platform, and the top of the fixed platform is fixedly connected to an electric telescopic rod. The output end of the electric telescopic rod is rotatably connected to the top of the clamping platform, and the electric telescopic rod is activated to drive the clamping platform to rise and fall.

[0009] Preferably, a movable cylinder is fixedly connected to the bottom end of the workbench, and a mounting plate is fixedly connected to the output end of the movable cylinder. The mounting plate is fixedly connected to the bottom end of the movable plate, and the movable cylinder is activated to drive the mounting plate to move.

[0010] Preferably, a servo motor is fixedly connected to the bottom end of the mounting plate, the output end of the servo motor is fixedly connected to the bottom end of the rotary table, and a rubber suction cup connector is fixedly connected to the top end of the adsorption air pump. The servo motor is started to drive the rotary table to rotate to adjust the angle.

[0011] Preferably, the top of the worktable is provided with two sets of sliding grooves, and a linkage block is slidably connected inside the sliding groove. The linkage block is fixedly connected to the top of the mounting plate, and the sliding stability is improved by the cooperation between the sliding groove and the linkage block.

[0012] Preferably, a calibration frame is fixedly connected to the top of the workbench, and a white light interferometer is fixedly connected to the top of the calibration frame. The lens is tested by the white light interferometer to facilitate calibration.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0014] The worktable and auxiliary clamping mechanism work together to first place the lens on the rubber suction cup connector of the adsorption air pump and install the suction cup. The adsorption air pump and suction cup work together to initially adsorb the irregularly shaped lens. Then, the moving cylinder is activated to move the movable plate into the interior of the fixed platform. The electric telescopic rod is activated to move the clamping platform and the clamping telescopic rod downward, so that the contact head contacts the surface of the lens. The contact is reinforced by the elasticity of the spring. When the balance of the lens needs to be adjusted for calibration, the adjusting bolt is rotated to drive the movable threaded block to rise and fall, so that the contact between the contact head and the lens is more stable. Then, the servo motor is activated to drive the rotary table to rotate, adjust the processing angle of the lens, and make the clamping platform rotate synchronously with it. After processing, the clamping platform is reset by the electric telescopic rod, and the movable plate is moved to the underside of the calibration frame by the moving cylinder. The lens is then inspected by a white light interferometer. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 This is a schematic diagram of the overall first-view structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall second-view structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the overall third-view structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the clamping platform structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the internal structure of the fixed cylinder of this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Workbench; 2. Auxiliary clamping mechanism; 201. Movable groove; 202. Movable plate; 203. Rotary table; 204. Adsorption air pump; 205. Fixed table; 206. Electric telescopic rod; 207. Clamping table; 208. Fixed cylinder; 209. Adjusting bolt; 210. Clamping telescopic rod; 211. Contact head; 212. Spring; 213. Movable threaded block; 3. Mounting plate; 4. Servo motor; 5. Moving cylinder; 6. Calibration frame; 7. White light interferometer; 8. Slide groove; 9. Linkage block. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] This utility model provides, for example Figure 1-5 The optical precision machining rotary positioning platform with a calibration structure shown includes a worktable 1. An auxiliary clamping mechanism 2 is provided on the surface of the worktable 1. The auxiliary clamping mechanism 2 includes a movable groove 201 formed on the surface of the worktable 1. A movable plate 202 is slidably connected inside the movable groove 201. A rotary table 203 is rotatably connected to the top of the movable plate 202. An adsorption air pump 204 is fixedly connected to the top of the rotary table 203. A clamping platform 207 is provided above the adsorption air pump 204. Several sets of fixed cylinders 208 are fixedly connected inside the clamping platform 207. Adjusting bolts 209 are rotatably connected inside the fixed cylinders 208. A movable threaded block 213 is threadedly connected to the outer wall of the bottom end of the adjusting bolt 209. The movable threaded block 213 is slidably connected inside the fixed cylinder 208. A clamping telescopic rod 210 is fixedly connected to the bottom end of the movable threaded block 213. The fixed cylinders... The auxiliary rotating table 203, along with parts such as 208, makes the lens posture more stable. The orientation of the lens is calibrated by adjusting the cooperation of parts such as bolt 209 and movable threaded block 213. A spring 212 is sleeved on the outer wall of the clamping telescopic rod 210. An abutment head 211 is fixedly connected to the bottom end of the clamping telescopic rod 210. The elasticity of the spring 212 makes the clamping more stable. The top of the worktable 1 is fixedly connected to the fixed platform 205, and the top of the fixed platform 205 is fixedly connected to the electric telescopic rod 206. The output end of the electric telescopic rod 206 is rotatably connected to the top of the clamping platform 207. Activating the electric telescopic rod 206 drives the clamping platform 207 to rise and fall. The bottom of the worktable 1 is fixedly connected to the moving cylinder 5. The output end of the moving cylinder 5 is fixedly connected to the mounting plate 3. The mounting plate 3 is fixedly connected to the bottom end of the movable plate 202. Activating the moving cylinder 5 drives the mounting plate 3 to move.

[0025] Refer to the instruction manual appendix Figure 1-5A servo motor 4 is fixedly connected to the bottom of the mounting plate 3. The output end of the servo motor 4 is fixedly connected to the bottom of the rotary table 203. A rubber suction cup connector is fixedly connected to the top of the adsorption pump 204. The servo motor 4 is started to drive the rotary table 203 to rotate to adjust the angle. Two sets of sliding grooves 8 are opened at the top of the worktable 1. A linkage block 9 is slidably connected inside the sliding groove 8. The linkage block 9 is fixedly connected to the top of the mounting plate 3. The sliding stability is improved by the cooperation between the sliding groove 8 and the linkage block 9. A calibration frame 6 is fixedly connected to the top of the worktable 1. A white light interferometer 7 is fixedly connected to the top of the calibration frame 6. The lens is tested by the white light interferometer 7 for calibration. Through the cooperation between the worktable 1 and the auxiliary clamping mechanism 2, the lens is first placed on the surface of the rubber suction cup connector of the adsorption pump 204 and the suction cup is installed. Then, the adsorption pump 204 and the suction cup are connected to the lens. After initial adsorption of the irregularly shaped lens, the moving cylinder 5 is activated to move the movable plate 202 into the interior of the fixed platform 205. The electric telescopic rod 206 is activated to move the clamping platform 207 and the clamping telescopic rod 210 downwards, so that the contact head 211 contacts the surface of the lens. The contact is reinforced by the elasticity of the spring 212. When the balance of the lens needs to be adjusted for calibration, the adjusting bolt 209 is rotated to drive the movable threaded block 213 to rise and fall, so that the contact head 211 and the lens are in more stable contact. Then, the servo motor 4 is activated to drive the rotary table 203 to rotate, adjust the processing angle of the lens, and make the clamping platform 207 rotate synchronously with it. After processing, the clamping platform 207 is reset by the electric telescopic rod 206, and the movable plate 202 is moved to the underside of the calibration frame 6 by the moving cylinder 5. The lens is then inspected by the white light interferometer 7.

[0026] The working principle of this practical application is as follows:

[0027] Refer to the instruction manual appendix Figure 1-5When lens polishing is required, the lens is first placed on the surface of the rubber suction cup connector of the adsorption air pump 204 and the suction cup is installed. The adsorption air pump 204 and the suction cup then perform initial adsorption on the irregularly shaped lens. Next, the moving cylinder 5 is activated to move the movable plate 202 into the interior of the fixed platform 205. The electric telescopic rod 206 is activated, causing the clamping platform 207 and the clamping telescopic rod 210 to move downwards, so that the contact head 211 contacts the surface of the lens. The contact is reinforced by the elasticity of the spring 212. When adjusting the lens balance for calibration, if the position of one contact head 211 is significantly lower than other groups, the adjusting bolt 209 is rotated to move the movable plate 202 into the fixed platform 205. The moving threaded block 213 descends, thereby making the contact between the contact head 211 and the lens more stable. Alternatively, depending on the required grinding posture of the lens, the adjusting bolt 209 is rotated inside the two sets of diagonally opposite fixed cylinders 208 to drive the lens to make fine adjustments, thereby completing the posture calibration to make it easier to process. Then, the servo motor 4 is started to drive the rotary table 203 to rotate, adjust the processing angle of the lens, and make the clamping table 207 rotate synchronously with it. After processing, the clamping table 207 is reset by the electric telescopic rod 206, and the movable plate 202 is moved to the underside of the calibration frame 6 by the moving cylinder 5. The lens is then inspected by the white light interferometer 7.

[0028] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An optical precision machining rotary positioning platform with a calibration structure, comprising a worktable (1), characterized in that: The surface of the workbench (1) is provided with an auxiliary clamping mechanism (2), the auxiliary clamping mechanism (2) includes the movable groove (201) opened in the surface of the workbench (1), the movable groove (201) is slidably connected with the movable plate (202), the movable plate (202) is rotatably connected with the rotary table (203) at the top end, the rotary table (203) is fixedly connected with the adsorption air pump (204) at the top end, the adsorption air pump (204) is provided with the clamping table (207) above, the clamping table (207) is fixedly connected with a plurality of groups of fixed cylinders (208) in the inside, the fixed cylinder (208) is rotatably connected with the adjusting bolt (209) in the inside, the adjusting bolt (209) is threadedly connected with the movable threaded block (213) on the outer side wall at the bottom end, the movable threaded block (213) is slidably connected in the inside of the fixed cylinder (208), the movable threaded block (213) is fixedly connected with the clamping telescopic rod (210) at the bottom end.

2. The optical precision machining rotary positioning platform with a calibration structure according to claim 1, characterized in that: The outer side wall of the clamping telescopic rod (210) is provided with the spring (212), and the bottom end of the clamping telescopic rod (210) is fixedly connected with the abutting head (211).

3. The optical precision machining rotary positioning platform with a calibration structure according to claim 1, characterized in that: The top end of the workbench (1) is fixedly connected with the fixed table (205), and the top end of the fixed table (205) is fixedly connected with the electric telescopic rod (206), and the output end of the electric telescopic rod (206) is rotatably connected with the top end of the clamping table (207).

4. The optical precision machining rotary positioning platform with a calibration structure according to claim 1, characterized in that: The bottom end of the workbench (1) is fixedly connected with the moving air cylinder (5), and the output end of the moving air cylinder (5) is fixedly connected with the mounting plate (3), and the mounting plate (3) is fixedly connected with the bottom end of the movable plate (202).

5. The optical precision machining rotary positioning platform with a calibration structure according to claim 4, characterized in that: The bottom end of the mounting plate (3) is fixedly connected with the servo motor (4), and the output end of the servo motor (4) is fixedly connected with the bottom end of the rotary table (203), and the top end of the adsorption air pump (204) is fixedly connected with the rubber suction cup connecting seat.

6. The optical precision machining rotary positioning platform with a calibration structure according to claim 1, characterized in that: The top end of the workbench (1) is provided with two groups of lower sliding grooves (8), and the inside of the lower sliding groove (8) is slidably connected with the linkage block (9), and the linkage block (9) is fixedly connected with the top end of the mounting plate (3).

7. The optical precision machining rotary positioning platform with a calibration structure according to claim 1, characterized in that: The top end of the workbench (1) is fixedly connected with the calibration frame (6), and the top end of the calibration frame (6) is fixedly connected with the white light interferometer (7).

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