Non-rotation grinding disc for optical polishing

Abstract

The utility model relates to the field of optical element machining, in particular to a non-rotation grinding disc for optical polishing, which comprises a driving mechanism, the driving mechanism comprises a motor and a speed reducer, and an input shaft of the speed reducer is connected with the motor; the transmission mechanism comprises an eccentric adjusting mechanism and a cylinder, one end of the eccentric adjusting mechanism is connected with the output shaft of the speed reducer, and the other end is connected with the cylinder and drives the cylinder to perform eccentric translation; the grinding mechanism comprises a grinding disc rod with the tail end provided with a universal ball and a grinding disc movably connected with the universal ball, the grinding disc rod is connected with an air cylinder, and the air cylinder drives the grinding disc to do eccentric translation; the first retaining mechanism is respectively connected with the millstone rod and the millstone and is used for limiting the rotation of the millstone. According to the device, possible unexpected rotation of the grinding disc in the machining process can be avoided, so that it is ensured that the grinding disc is only driven by the air cylinder to do eccentric translation, and abrasion of a workpiece is reduced.

Description

Technical Field

[0001] The present application belongs to the field of optical element processing, and in particular relates to a non-self-rotating grinding disc for optical polishing. Background Art

[0002] Computer Controlled Optical Surfacing (CCOS) is an advanced optical manufacturing technology that uses a computer control system to accurately control the surface shape and quality of optical components. In the process of polishing the surface of an optical component, the grinding disc is usually designed to only move eccentrically with the drive mechanism, limiting the rotation of the grinding disc around its own central axis, so that it moves to different positions on the surface of the optical component for processing, which is to uniformly grind and polish the surface of the workpiece. However, when the grinding disc contacts the optical component, the surface of the optical component will exert a force in the opposite direction on the grinding disc, causing the grinding disc to rotate unexpectedly (i.e., the grinding disc rotates around its own central axis), which will cause uneven polishing marks on the surface of the workpiece, and even scratches and pits, which greatly affects the stability of the working process, production efficiency and quality. In order to solve this problem, it is necessary to design a new type of grinding disc device to solve the unexpected rotation phenomenon that occurs during the polishing process. Utility Model Content

[0003] In order to achieve the above object, the technical solution of the utility model is: a non-self-rotating grinding disc for optical polishing, comprising:

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

[0005] A transmission mechanism, wherein the transmission mechanism comprises an eccentric adjustment mechanism and a cylinder, wherein 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, the grinding mechanism comprising a grinding disc rod with a universal ball at the end and a grinding disc movably connected to the universal ball, the grinding disc rod being connected to the cylinder, and the cylinder driving the grinding disc to perform eccentric translation;

[0007] It also includes a first retaining mechanism that is respectively connected to the grinding wheel rod and the grinding wheel, and is used to limit the rotation of the grinding wheel.

[0008] Preferably, 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 cooperates with the external thread. The grinding disc is fixedly connected to the ball seat through threaded cooperation and can be flipped at multiple angles along the universal ball.

[0009] Preferably, the first retaining mechanism includes a secondary rod, a connecting rod, an adjusting structure and two movable joints, a spherical cavity is respectively arranged at both ends of the connecting rod, the grinding disc is movably connected to the spherical cavity at one end of the connecting rod through an movable joint, the secondary rod is fixed on the grinding disc rod, and the secondary rod is movably connected to the spherical cavity at the other end of the connecting rod through an adjusting structure and another movable joint.

[0010] Preferably, the movable joint includes a fixed rod and a movable ball head arranged at one end of the fixed rod, the fixed rod is provided with an external thread, the movable ball head of each movable joint is movably connected to the spherical cavity at both ends of the connecting rod, the fixed rod of one movable joint is fixed to the adjustment structure through an external thread, and the fixed rod of another movable joint is fixed to the grinding disc through an external thread.

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

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

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

[0014] Preferably, it also includes a second retaining mechanism respectively connected to the bearing seat and the cylinder, for limiting the rotation of the cylinder.

[0015] Preferably, the second retaining mechanism includes two adjusting rods fixed on 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, and the other end of the traction rod is rotatably connected to the side wall of the cylinder.

[0016] Preferably, a connection hole is provided at one end of the adjusting rod connected to the "I"-shaped support rod, a pin is provided on the side connected to the adjusting rod for rotation with the connection hole, connection holes are provided at both ends of the traction rod, a pin is provided on the side connected to the traction rod for rotation with the connection hole, and a pin is provided on the side wall of the cylinder for rotation with the traction rod. The grinding mechanism also includes a ball seat, which is movably connected to the universal ball, and an external thread is provided on the outer wall of the ball seat, and the grinding disc is fixed to the ball seat through threads and can be flipped at multiple angles along the universal ball.

[0017] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0018] The non-self-rotating grinding wheel for optical polishing described in the utility model can avoid the unexpected self-rotation of the grinding wheel during the processing to the greatest extent, so as to ensure that the grinding wheel only performs eccentric translation under the drive of the cylinder. At the same time, the grinding wheel can be turned over at multiple angles along with the universal wheel. During processing, the grinding wheel can adjust the turning angle in real time according to the curvature of the workpiece surface, so as to effectively perform fine polishing on the workpiece surface, reduce the wear of the grinding wheel itself and reduce the damage caused by the grinding wheel to the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0020] Figure 1 A schematic diagram of a non-rotating grinding disc for optical polishing in this application;

[0021] Figure 2 This is a schematic diagram of the connection between the first holding mechanism and the grinding mechanism of the present application. Figure 2 (b) Figure 2 (a) a cross-sectional view;

[0022] Figure 3 This is a schematic diagram of the grinding disc in the grinding mechanism of this application after flipping. Figure 3 (b) Figure 3 (a) a cross-sectional view;

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

[0024] Description of reference numerals:

[0025] 1. Driving 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. Adjustment rod; 5. First holding mechanism; 51. Auxiliary rod; 511. Fixed ball head; 52. Connecting rod; 521. Connecting piece; 53. Active joint; 531. Active ball head; 532. Fixed rod; 54. Adjustment structure; 541. Adjustment cavity; 542. Second threaded hole. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and do not constitute a limitation of the utility model.

[0027] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

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

[0030] The utility model provides a non-self-rotating grinding disc for optical polishing, such as Figure 1-Figure 4 As shown, including:

[0031] The driving 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 rotation 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 one end of the eccentric adjustment mechanism 21 and the cylinder 22 is eccentrically arranged. The piston rod in the cylinder 22 and the rotation axis of the motor 11 are adjusted to a non-coaxial and parallel state through the eccentric adjustment mechanism 21, driving the cylinder 22 to make eccentric translation. A threaded hole is provided at the bottom of the piston rod of the cylinder 22. The grinding wheel rod 31 is connected to the threaded hole at the bottom of the cylinder 22 through an external thread. A universal ball 32 and a grinding wheel 34 movably connected to the universal ball 32 are provided at the end of the grinding wheel rod 31. The grinding wheel rod 31 drives the grinding wheel 34 to follow the cylinder 22 to make eccentric translation.

[0033] The grinding mechanism 3 includes a grinding wheel rod 31, a universal ball 32 is provided at the end of the grinding wheel rod 31, a ball seat 33 is movably connected to the universal ball 32, an outer thread is provided on the outer periphery of the ball seat 33, an inner thread is provided on the upper part of the grinding wheel 34, and the grinding wheel 34 is fixed by the inner thread and the outer thread of the ball seat 33. While the grinding wheel 34 performs eccentric translation, it can also be flipped at any angle along the universal ball 32. When processing the surface of the workpiece, the grinding wheel 34 can adjust the flipping angle in real time according to the curvature of the workpiece surface, and effectively perform fine polishing on the surface of the workpiece; the grinding wheel rod 31 is connected to the piston rod of the cylinder 22, and the piston rod of the cylinder 22 will not rotate around its own axis, thereby limiting the rotation of the grinding wheel rod 31 around its own axis, and the cylinder 22 drives the grinding wheel 34 to perform eccentric translation.

[0034] It also includes a first holding mechanism 5 respectively connected to the grinding wheel rod 31 and the grinding wheel 34. The first holding mechanism 5 is respectively connected to the grinding wheel rod 31 and the grinding wheel 34. During the processing, when the grinding wheel 34 contacts the surface of the workpiece 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 is set to effectively limit the rotation of the grinding wheel 34, and does not affect the flipping of the grinding wheel 34 with the universal ball 32.

[0035] In some embodiments, Figure 2As shown, the first holding mechanism 5 includes a secondary rod 51, a connecting rod 52, two movable joints 53 and an adjusting structure 54. A spherical cavity is respectively arranged at both ends of the connecting rod 52. Each movable joint 53 includes a fixed rod 532 and an movable ball head 531 arranged at one end of the fixed rod 532. The fixed rod 532 is provided with an external thread. The grinding disc 34 is movably connected to the spherical cavity at one end of the connecting rod 52 through an movable joint 53. Specifically, the spherical cavity on one 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 is provided with an external thread. The side wall of the grinding disc 34 is provided with a first threaded hole 341. 532 is fixed with the first threaded hole 341 of the grinding disc 34 through external threads; the auxiliary rod 51 is movably connected with the spherical cavity at the other end of the connecting rod 52 through the adjustment structure 54 and another movable joint 53. Specifically, a fixed ball head 511 is provided at the end of the auxiliary rod 51, and an adjustment cavity 541 is provided on the side of the adjustment structure 54 close to the auxiliary rod 51. The fixed ball head 511 is movably connected with the adjustment cavity 541. A second threaded hole 542 is provided on the side wall of the adjustment structure close to the connecting rod 52. The fixed rod 532 is fixed with the second threaded hole 542 through external threads, and the movable ball head 531 is movably connected with the spherical cavity on the other side of the connecting rod 52. Figure 3 As shown, when the grinding disc 34 is flipped at any angle with the universal ball 32, the two movable joints 53 drive the connecting rod 52 to adjust the angle as the flipping angle of the grinding disc 34 changes. At the same time, the adjustment structure 54 can transform the fixed rod 532 and the auxiliary rod 51 from being parallel to each other to a certain angle, thereby limiting the grinding disc 34 from rotating and not affecting the flipping of the grinding disc 34 at any angle.

[0036] The eccentric translation mentioned in this embodiment means that the rotation center and the mass center of the moving object do not coincide with each other, and the straight line connecting any two points on the moving object always remains parallel during the entire movement process.

[0037] The non-rotating grinding wheel for optical polishing in this embodiment ensures that the grinding wheel 34 moves eccentrically along a predetermined trajectory driven by the cylinder 22, thereby minimizing the possibility of unexpected rotation of the grinding wheel 34 during the processing, reducing the wear of the grinding wheel 34 itself and the damage caused by the grinding wheel 34 to the workpiece, and improving the 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 connecting member 521. The connecting member 521 is generally a screw or other connecting structure. Such a design facilitates the processing of the connecting rod 52 without affecting assembly and use.

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

[0040] In some embodiments, Figure 1 and Figure 4 As shown, it also includes a second holding mechanism 4 respectively connected to the bearing seat 23 and the cylinder 22. The second holding mechanism 4 limits the rotation of the cylinder 22 so that the cylinder 22 can only perform eccentric translation along a predetermined trajectory within a plane.

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

[0042] Furthermore, a connecting hole is provided at one end of the adjusting rod 43 connected to the "I"-shaped support rod 41, a pin is provided on the side where the "I"-shaped support rod 41 is connected to the adjusting rod 43, and a connecting hole is provided at both ends of the traction rod 42. A pin is provided on the side where the "I"-shaped support rod 41 is connected to the traction rod 42, and a pin is provided on the side wall of the cylinder 22 to be 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 limit the rotation of the cylinder 22 when the driving mechanism 1 drives the cylinder 22 to make eccentric translation through the eccentric adjustment mechanism 21.

[0043] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A non-self-rotating grinding disc for optical polishing, characterized in that: include A driving mechanism, the driving mechanism comprising a motor and a reducer, wherein an input shaft of the reducer is connected to the motor; A transmission mechanism, wherein the transmission mechanism comprises an eccentric adjustment mechanism and a cylinder, wherein 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, the grinding mechanism comprising a grinding disc rod with a universal ball at the end and a grinding disc movably connected to the universal ball, the grinding disc rod being connected to the cylinder, and the cylinder driving the grinding disc to perform eccentric translation; It also includes a first retaining mechanism that is respectively connected to the grinding wheel rod and the grinding wheel, and is used to limit the rotation of the grinding wheel.

2. The non-self-rotating grinding 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 cooperates with the external thread. The grinding disc is fixedly connected to the ball seat through threaded cooperation and can be flipped at multiple angles along the universal ball.

3. The non-self-rotating grinding disc for optical polishing according to claim 1, characterized in that: The first retaining mechanism includes a secondary rod, a connecting rod, an adjusting structure and two movable joints. A spherical cavity is respectively arranged at both ends of the connecting rod. The grinding disc is movably connected to the spherical cavity at one end of the connecting rod through an movable joint. The secondary rod is fixed on the grinding disc rod, and the secondary rod is movably connected to the spherical cavity at the other end of the connecting rod through an adjusting structure and another movable joint.

4. The non-self-rotating grinding disc for optical polishing according to claim 3, characterized in that: The movable joint includes a fixed rod and a movable ball head arranged at one end of the fixed rod. The fixed rod is provided with an external thread. The movable ball head of each movable joint is movably connected to the spherical cavity at both ends of the connecting rod. The fixed rod of one movable joint is fixed to the adjustment structure through an external thread, and the fixed rod of another movable joint is fixed to the grinding disc through an external thread.

5. The non-self-rotating grinding disc for optical polishing according to claim 4, characterized in that: A first threaded hole is provided on the side wall of the grinding disc, and the fixing rod is connected to the first threaded hole via an external thread.

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

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

8. The non-self-rotating grinding disc for optical polishing according to claim 7, characterized in that: It also includes a second retaining mechanism connected to the bearing seat and the cylinder respectively, and is used to limit the rotation of the cylinder.

9. The non-self-rotating grinding disc for optical polishing according to claim 8, characterized in that: The second retaining mechanism includes two adjusting rods fixed on 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, and the other end of the traction rod is rotatably connected to the side wall of the cylinder.

10. The non-self-rotating grinding disc for optical polishing according to claim 9, characterized in that: A connecting hole is provided at one end of the adjusting rod connected to the "I"-shaped support rod, a pin is provided on the side where the "I"-shaped support rod is connected to the adjusting rod, and connecting holes are provided at both ends of the traction rod. A pin is provided on the side where the "I"-shaped support rod is connected to the traction rod, and a pin is provided on the side wall of the cylinder, which is rotatably connected to the traction rod.

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