Non-rotating polishing disc for optical polishing

Abstract

The application relates to the field of optical element processing, in particular to a non-self-rotation grinding disc for optical polishing, which comprises a driving mechanism, the driving mechanism comprising a motor and a speed reducer, the input shaft of the speed reducer being connected with the motor; a transmission mechanism, the transmission mechanism comprising an eccentric adjusting mechanism and a cylinder, one end of the eccentric adjusting mechanism being connected with the output shaft of the speed reducer, the other end of the eccentric adjusting mechanism being connected with the cylinder and driving the cylinder to perform eccentric translation; a grinding mechanism, the grinding mechanism comprising a grinding disc rod provided with a universal ball at the tail end and a grinding disc movably connected with the universal ball, the grinding disc rod being connected with the cylinder, and the cylinder driving the grinding disc to perform eccentric translation; and a first retaining mechanism connected with the grinding disc rod and the grinding disc respectively and used for limiting the self-rotation of the grinding disc. The application can avoid the undesired self-rotation of the grinding disc during the processing, so that the grinding disc only performs eccentric translation under the driving of the cylinder, and the abrasion of a workpiece is reduced.

Description

Technical Field

[0001] This application belongs to the field of optical component processing, and in particular relates to a non-rotating grinding disc for optical polishing. Background Technology

[0002] Computer-Controlled Optical Surfacing (CCOS) is an advanced optical manufacturing technology that utilizes a computer control system to precisely control the surface shape and quality of optical components. During the polishing process of optical components, the grinding wheel is typically designed to move eccentrically only with the drive mechanism, limiting its rotation around its central axis. This allows it to move to different positions on the optical component surface for processing, aiming to achieve uniform grinding and polishing. However, when the grinding wheel contacts the optical component, the surface exerts a force in the opposite direction, causing the grinding wheel to rotate undesirably around its central axis. This results in uneven polishing marks, and even scratches and pits on the workpiece surface, significantly impacting the stability of the process, production efficiency, and quality. To address this issue, a novel grinding wheel device is needed to resolve the undesirable rotation phenomenon during polishing. Summary of the Invention

[0003] To achieve the above objectives, the technical solution of this invention is: a non-rotating polishing disc for optical polishing, comprising:

[0004] A drive mechanism, comprising a motor and a reducer, wherein the input shaft of the reducer is connected to the motor;

[0005] The transmission mechanism includes an eccentric adjustment mechanism and a cylinder. One end of the eccentric adjustment mechanism is connected to the output shaft of the reducer, and the other end is connected to the cylinder and drives the cylinder to perform eccentric translation.

[0006] A grinding mechanism, comprising a grinding rod with a universal ball at its end and a grinding disc movably connected to the universal ball, the grinding rod being connected to a cylinder, and the cylinder driving the grinding disc to perform eccentric translational motion;

[0007] It also includes a first retaining mechanism that connects the grinding wheel rod and the grinding wheel respectively, for limiting the rotation of the grinding wheel.

[0008] Preferably, the grinding mechanism further includes a ball seat, which is movably sleeved with the universal ball. The outer wall of the ball seat is provided with an external thread, and the grinding disc is provided with an internal thread that mates with the external thread. The grinding disc is fixedly connected to the ball seat through the threaded engagement and can be rotated at multiple angles along the universal ball.

[0009] Preferably, the first holding mechanism includes a secondary rod, a connecting rod, an adjusting structure, and two movable sections. A spherical cavity is provided at each end of the connecting rod. The grinding disc is movably connected to the spherical cavity at one end of the connecting rod through a movable section. The secondary rod is fixed to the grinding disc rod. The secondary rod is movably connected to the spherical cavity at the other end of the connecting rod through the adjusting structure and another movable section.

[0010] Preferably, the movable section includes a fixed rod and a movable ball head at one end of the fixed rod. The fixed rod is provided with external threads. The movable ball head of each movable section is movably sleeved with the spherical cavities at both ends of the connecting rod. The fixed rod of one movable section is fixed to the adjusting structure through external threads, and the fixed rod of the other movable section is fixed to the grinding disc through external threads.

[0011] Preferably, the side wall of the grinding disc is provided with a first threaded hole, and the fixing rod is connected to the first threaded hole through an external thread.

[0012] Preferably, the end of the auxiliary rod is provided with a fixed ball head, the adjustment structure is provided with an adjustment cavity on the side near the auxiliary rod, the fixed ball head is movably connected to the adjustment cavity, the side wall of the adjustment structure near the connecting rod is provided with a second threaded hole, and the fixed rod is connected to the second threaded hole through an external thread.

[0013] Preferably, it also includes a bearing housing, on which the motor and the reducer are fixed.

[0014] Preferably, it further includes a second retaining mechanism that connects the bearing housing and the cylinder respectively, for limiting the rotation of the cylinder.

[0015] Preferably, the second retaining mechanism includes two adjusting rods fixed to the side wall of the bearing seat, an "I"-shaped support rod, and two traction rods. One side of the "I"-shaped support rod is rotatably connected to the adjusting rod, and the other side is rotatably connected to one end of the traction rod. The other end of the traction rod is rotatably connected to the side wall of the cylinder.

[0016] Preferably, the end of the adjusting rod connected to the "I"-shaped support rod has a connecting hole, and the side of the "I"-shaped support rod connected to the adjusting rod has a pin that is rotatably connected to the connecting hole. Both ends of the traction rod have connecting holes, and the side of the "I"-shaped support rod connected to the traction rod has a pin that is rotatably connected to the connecting hole. The cylinder sidewall has a pin that is rotatably connected to the traction rod. The grinding mechanism also includes a ball seat, which is movably sleeved with the universal ball. The outer wall of the ball seat is provided with external threads, and the grinding disc is fixed to the ball seat by the threads and can be rotated at multiple angles along the universal ball.

[0017] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0018] The non-rotating grinding disc for optical polishing described in this invention minimizes unwanted rotation of the grinding disc during processing, ensuring that the grinding disc only performs eccentric translation under the drive of the cylinder. At the same time, the grinding disc can be rotated at multiple angles with the universal wheels. During processing, the grinding disc adjusts the rotation angle in real time according to the curvature of the workpiece surface, effectively performing fine polishing on the workpiece surface, and reducing wear on the grinding disc itself and the damage caused by the grinding disc to the workpiece. Attached Figure Description

[0019] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0020] Figure 1 This is a schematic diagram of a non-rotating grinding disc for optical polishing according to this application;

[0021] Figure 2 This is a schematic diagram showing the connection between the first holding mechanism and the grinding mechanism in this application. Figure 2 (b) is Figure 2 (a) is a sectional view;

[0022] Figure 3 This is a schematic diagram of the grinding disc in the grinding mechanism of this application after it has been flipped. Figure 3 (b) is Figure 3 (a) is a sectional view;

[0023] Figure 4 This is a schematic diagram of the second holding mechanism of this application.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Drive mechanism; 11. Motor; 12. Reducer; 2. Transmission mechanism; 21. Eccentric adjustment mechanism; 22. Cylinder; 23. Bearing seat; 3. Grinding mechanism; 31. Grinding disc rod; 32. Universal ball; 33. Ball seat; 34. Grinding disc; 341. First threaded hole; 4. Second holding mechanism; 41. "I"-shaped support rod; 42. Traction rod; 43. Adjusting rod; 5. First holding mechanism; 51. Secondary rod; 511. Fixed ball head; 52. Connecting rod; 521. Connecting piece; 53. Movable joint; 531. Movable ball head; 532. Fixed rod; 54. Adjustment structure; 541. Adjustment cavity; 542. Second threaded hole. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not constitute a limitation thereof.

[0027] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] The invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] This invention provides a non-rotating polishing disc for optical polishing, such as... Figures 1-4 As shown, it includes:

[0031] The drive mechanism 1 includes a motor 11 and a reducer 12. The input shaft of the reducer 12 is connected to the motor 11. The motor 11 drives the reducer 12 to rotate. The reducer 12 reduces the speed of the motor 11 and amplifies the torque according to the reduction ratio.

[0032] The transmission mechanism 2 includes an eccentric adjustment mechanism 21 and a cylinder 22. One end of the eccentric adjustment mechanism 21 is connected to the output shaft of the reducer 12, and the other end is connected to the cylinder 22. The output shaft of the eccentric adjustment mechanism 21 and the cylinder 22 are eccentrically set. The piston rod in the cylinder 22 and the rotation axis of the motor 11 are adjusted to be non-coaxial and parallel through the eccentric adjustment mechanism 21, which drives the cylinder 22 to perform eccentric translation. The bottom of the piston rod of the cylinder 22 is provided with a threaded hole. The grinding disc rod 31 is connected to the threaded hole at the bottom of the cylinder 22 through an external thread. The end of the grinding disc rod 31 is provided with a universal ball 32 and a grinding disc 34 that is movably connected to the universal ball 32. The grinding disc rod 31 drives the grinding disc 34 to follow the cylinder 22 to perform eccentric translation.

[0033] The grinding mechanism 3 includes a grinding disc rod 31, with a universal ball 32 at the end of the grinding disc rod 31. A ball seat 33 is movably connected to the universal ball 32. The outer circumference of the ball seat 33 is provided with an external thread, and the upper part of the grinding disc 34 is provided with an internal thread. The grinding disc 34 is fixed by the internal thread engaging with the external thread of the ball seat 33. While the grinding disc 34 performs eccentric translation, it can also rotate at any angle along the universal ball 32. When processing the surface of the workpiece, the grinding disc 34 can adjust the rotation angle in real time according to the curvature of the workpiece surface, effectively polishing the surface of the workpiece. The grinding disc rod 31 is connected to the piston rod of the cylinder 22. The piston rod of the cylinder 22 does not rotate around its own axis, thereby restricting the rotation of the grinding disc rod 31 around its own axis. The cylinder 22 drives the grinding disc 34 to perform eccentric translation.

[0034] It also includes a first holding mechanism 5 that connects the grinding wheel rod 31 and the grinding wheel 34 respectively. The first holding mechanism 5 is connected to the grinding wheel rod 31 and the grinding wheel 34 respectively. During the processing, when the grinding wheel 34 contacts the workpiece surface and performs eccentric translation, in order to prevent the grinding wheel 34 from rotating along its own axis due to the reaction force of the workpiece surface, the first holding mechanism 5 effectively limits the rotation of the grinding wheel 34 and does not affect the rotation of the grinding wheel 34 with the universal ball 32.

[0035] In some implementations, such as Figure 2As shown, the first holding mechanism 5 includes a secondary rod 51, a connecting rod 52, two movable sections 53, and an adjusting structure 54. A spherical cavity is provided at each end of the connecting rod 52. Each movable section 53 includes a fixed rod 532 and a movable ball head 531 located at one end of the fixed rod 532. The fixed rod 532 has external threads. The grinding disc 34 is movably connected to the spherical cavity at one end of the connecting rod 52 via a movable section 53. Specifically, the spherical cavity on the side of the connecting rod 52 connected to the grinding disc 34 is movably sleeved with the movable ball head 531. The outer periphery of the fixed rod 532 has external threads, and the side wall of the grinding disc 34 has a first threaded hole 341. 532 is fixed by external thread and mating with the first threaded hole 341 of the grinding disc 34; the auxiliary rod 51 is movably connected to the spherical cavity at the other end of the connecting rod 52 through the adjusting structure 54 and another movable section 53. Specifically, the end of the auxiliary rod 51 is provided with a fixed ball head 511, the adjusting structure 54 is provided with an adjusting cavity 541 on the side near the auxiliary rod 51, the fixed ball head 511 is movably connected to the adjusting cavity 541, the side wall of the adjusting structure near the connecting rod 52 is provided with a second threaded hole 542, the fixed rod 532 is fixed to the second threaded hole 542 by external thread, and the movable ball head 531 is movably sleeved with the spherical cavity on the other side of the connecting rod 52. Figure 3 As shown, when the grinding disc 34 rotates at any angle with the universal ball 32, the two movable joints 53 drive the connecting rod 52 to adjust the angle according to the rotation angle of the grinding disc 34. At the same time, the adjustment structure 54 can change the fixed rod 532 and the auxiliary rod 51 from parallel to a certain angle, which restricts the grinding disc 34 from rotating on its own without affecting the rotation of the grinding disc 34 at any angle.

[0036] The eccentric translation mentioned in this embodiment refers to the fact that the center of rotation of the moving object does not coincide with the center of mass, and the straight line connecting any two points on the moving object remains parallel throughout the entire motion.

[0037] The non-rotating grinding wheel for optical polishing in this embodiment ensures that the grinding wheel 34 moves eccentrically along a predetermined trajectory under the drive of the cylinder 22, thereby minimizing the possibility of undesirable rotation of the grinding wheel 34 during processing, reducing wear on the grinding wheel 34 itself and damage to the workpiece caused by the grinding wheel 34, and improving processing accuracy.

[0038] In other embodiments, the connecting rod 52 can be divided into two symmetrical sections in the middle, which are connected and fixed by a connector 521. The connector 521 is generally a screw or other connecting structure. This design facilitates the processing of the connecting rod 52 without affecting assembly and use.

[0039] In some embodiments, a bearing housing 23 is also included, on which the motor 11 and the reducer 12 are fixed. The bearing housing 23 does not rotate with the motor 11.

[0040] In some implementations, such as Figure 1 and Figure 4 As shown, it also includes a second holding mechanism 4 that connects the bearing housing 23 and the cylinder 22 respectively. The second holding mechanism 4 restricts the rotation of the cylinder 22 so that the cylinder 22 only performs eccentric translation along a predetermined trajectory in the plane.

[0041] Specifically, the second retaining mechanism 4 includes two adjusting rods 43, an "I"-shaped support rod 41, and two traction rods 42 fixed on the side wall of the bearing seat 23. One side of the "I"-shaped support rod 41 is rotatably connected to the adjusting rod 43, and the other side is rotatably connected to one end of the traction rod 42. The other end of the traction rod 42 is rotatably connected to the side wall of the cylinder 22.

[0042] Furthermore, the end of the adjusting rod 43 connected to the "I"-shaped support rod 41 is provided with a connecting hole, and the side of the "I"-shaped support rod 41 connected to the adjusting rod 43 is provided with a pin that is rotatably connected to the connecting hole. Both ends of the traction rod 42 are provided with connecting holes, and the side of the "I"-shaped support rod 41 connected to the traction rod 42 is provided with a pin that is rotatably connected to the connecting hole. The side wall of the cylinder 22 is provided with a pin that is rotatably connected to the traction rod 42. The adjusting rod 43, the "I"-shaped support rod 41 and the traction rod 42 cooperate with each other to restrict the rotation of the cylinder 22 when the drive mechanism 1 drives the cylinder 22 to perform eccentric translation through the eccentric adjustment mechanism 21.

[0043] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A non-rotating polishing disc for optical polishing, characterized in that: include A drive mechanism, comprising a motor and a reducer, wherein the input shaft of the reducer is connected to the motor; The transmission mechanism includes an eccentric adjustment mechanism and a cylinder. One end of the eccentric adjustment mechanism is connected to the output shaft of the reducer, and the other end is connected to the cylinder and drives the cylinder to perform eccentric translation. A grinding mechanism, comprising a grinding rod with a universal ball at its end and a grinding disc movably connected to the universal ball, the grinding rod being connected to a cylinder, and the cylinder driving the grinding disc to perform eccentric translational motion; It also includes a first retaining mechanism that connects the grinding wheel rod and the grinding wheel respectively, for limiting the rotation of the grinding wheel; The first holding mechanism includes a secondary rod, a connecting rod, an adjusting structure, and two movable sections. A spherical cavity is provided at each end of the connecting rod. The grinding disc is movably connected to the spherical cavity at one end of the connecting rod through a movable section. The secondary rod is fixed to the grinding disc rod. The secondary rod is movably connected to the spherical cavity at the other end of the connecting rod through the adjusting structure and another movable section. The movable section includes a fixed rod and a movable ball head located at one end of the fixed rod. The fixed rod is provided with external threads. The movable ball head of each movable section is movably sleeved with the spherical cavities at both ends of the connecting rod. The fixed rod of one movable section is fixed to the adjusting structure through external threads, and the fixed rod of the other movable section is fixed to the grinding disc through external threads.

2. The non-rotating polishing disc for optical polishing according to claim 1, characterized in that: The grinding mechanism also includes a ball seat, which is movably connected to the universal ball. The outer wall of the ball seat is provided with an external thread, and the grinding disc is provided with an internal thread that mates with the external thread. The grinding disc is fixedly connected to the ball seat through the threaded connection and can be rotated at multiple angles along the universal ball.

3. The non-rotating polishing disc for optical polishing according to claim 1, characterized in that: The grinding disc has a first threaded hole on its side wall, and the fixing rod is connected to the first threaded hole through an external thread.

4. The non-rotating polishing disc for optical polishing according to claim 1, characterized in that: The end of the auxiliary rod is provided with a fixed ball head, and the adjustment structure is provided with an adjustment cavity on the side near the auxiliary rod. The fixed ball head is movably connected to the adjustment cavity. The side wall of the adjustment structure near the connecting rod is provided with a second threaded hole, and the fixed rod is connected to the second threaded hole through an external thread.

5. The non-rotating polishing disc for optical polishing according to claim 1, characterized in that: It also includes a bearing housing, on which the motor and the reducer are fixed.

6. The non-rotating polishing disc for optical polishing according to claim 5, characterized in that: It also includes a second retaining mechanism that connects the bearing housing and the cylinder respectively, for limiting the rotation of the cylinder.

7. The non-rotating polishing disc for optical polishing according to claim 6, characterized in that: The second retaining mechanism includes two adjusting rods fixed to the side wall of the bearing seat, an "I"-shaped support rod, and two traction rods. One side of the "I"-shaped support rod is rotatably connected to the adjusting rod, and the other side is rotatably connected to one end of the traction rod. The other end of the traction rod is rotatably connected to the side wall of the cylinder.

8. The non-rotating polishing disc for optical polishing according to claim 7, characterized in that: The adjusting rod has a connecting hole at one end where it connects to the "I"-shaped support rod. The "I"-shaped support rod has a pin that is rotatably connected to the connecting hole on the side where it connects to the adjusting rod. Both ends of the traction rod have connecting holes. The "I"-shaped support rod has a pin that is rotatably connected to the connecting hole on the side where it connects to the traction rod. The cylinder sidewall has a pin that is rotatably connected to the traction rod.

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