Accurate grinding and polishing tool for improving machining precision of optical lens

Abstract

The utility model discloses a fine grinding and polishing tool for improving the machining precision of optical lenses, which comprises a grinding rack, the grinding rack is of a rectangular frame structure, a grinding table is arranged on the grinding rack, a grinding main shaft is arranged on the grinding rack corresponding to the grinding table, and the grinding main shaft is provided with a grinding wheel. The end part of the grinding main shaft is connected with a grinding mounting head through a coupling; the utility model relates to the technical field of accurate grinding and polishing tools, in particular to an accurate grinding and polishing tool capable of improving the machining precision of an optical lens, a flexible connecting sleeve of a split structure and a dish-shaped fixing seat jointly form a specific executing mechanism for grinding, and the dish-shaped fixing seat is installed in a sleeving mode during installation. And a guide limiting rod with a threaded structure is arranged to lock the fixing base and the grinding mounting head, the grinding stability is guaranteed, a flexible limiting sleeve is limited through a dish-shaped structure, the situation that the flexible limiting sleeve is excessively deformed due to stress is avoided, and the grinding precision is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fine grinding and polishing tooling, in particular to a fine grinding and polishing tooling for improving the processing accuracy of optical lenses. Background Art

[0002] People often need to use some optical lenses in their daily production and life. The most common ones are concave lenses, convex lenses and Fresnel optical lenses, which are widely used in cameras, microscopes, myopia and hyperopia glasses. In the processing of these optical lenses, it is often necessary to ensure the high smoothness of the mirror surface, so the lenses need to be polished with very high precision. At present, the mirror surface of optical lenses is mainly polished by rotating grinding wheels. In order to protect the lens itself during grinding, a grinding device made of flexible material is required. At present, the flexible grinding wheel is mostly fixed at the root. Therefore, when the grinding wheel is subjected to force contact, it is easy for the grinding wheel to tilt due to its certain ductility, resulting in poor grinding accuracy. In view of this, in-depth research on the above problems has led to the emergence of this case. Utility Model Content

[0003] In view of the deficiencies of the prior art, the utility model provides a fine grinding and polishing tool for improving the processing accuracy of optical lenses, thereby solving the problems of the prior art.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a fine grinding and polishing tool for improving the processing accuracy of optical lenses, comprising a grinding frame, the grinding frame being a rectangular frame structure, a grinding table being provided on the grinding frame, a grinding spindle being provided on the grinding frame corresponding to the grinding table, and a grinding mounting head being connected to the end of the grinding spindle via a coupling;

[0005] A follow-up slot is radially provided on the polishing and mounting head, a mounting guide slot extends from the head end of the follow-up slot, and the mounting guide slot passes through the bottom end of the polishing and mounting head;

[0006] The bottom end of the polishing and mounting head is provided with a cross spline;

[0007] The grinding mounting head is provided with a disc-shaped fixing seat, a positioning ring is extended from the top of the disc-shaped fixing seat, a cylindrical sleeve groove is opened in the center of the disc-shaped fixing seat and passes through the top of the positioning ring, a short column is provided on one side of the top of the sleeve groove, and a guide limit rod is installed on the short column;

[0008] A flexible polishing sleeve is sleeved on the dish-shaped fixing seat, an end portion of the flexible polishing sleeve is connected to a positioning ring, and a polishing pad is provided at the bottom end of the flexible polishing sleeve.

[0009] Preferably, the polishing and mounting head is a plate with a columnar structure, and the bottom edge of the polishing and mounting head is a sloped structure.

[0010] Preferably, the disc-shaped fixing seat is inserted from the bottom end of the grinding and mounting head so that the short column is aligned with the mounting guide groove for installation.

[0011] Preferably, a spline groove is provided on the central sleeve groove of the disc-shaped fixing seat to engage with the cross spline.

[0012] Preferably, the guide limiting rod is composed of an extension groove provided on the short column and a limiting rod threadedly installed in the extension groove. Beneficial effects

[0013] The utility model provides a fine grinding and polishing tool for improving the processing accuracy of optical lenses. It has the following beneficial effects: the fine grinding and polishing tool for improving the processing accuracy of optical lenses adopts a split-structure flexible connecting sleeve and a disc-shaped fixing seat to jointly constitute a specific execution mechanism for grinding. During installation, the disc-shaped fixing seat is installed in a set manner, and a guide limit rod with a threaded structure is provided to lock the fixing seat and the grinding installation head to ensure the stability of grinding. The flexible limit sleeve is limited by the disc-shaped structure to prevent the flexible limit sleeve from excessive deformation due to force, thereby effectively improving the grinding accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of a fine grinding and polishing tool for improving the processing accuracy of optical lenses described in the present invention.

[0015] Figure 2 This is a schematic diagram of the partial three-dimensional blasting structure of a fine grinding and polishing tool for improving the processing accuracy of optical lenses described in the present invention.

[0016] Figure 3 This is a schematic diagram of the partial side view blasting structure of a fine grinding and polishing tool for improving the processing accuracy of optical lenses described in the present invention.

[0017] In the figure: 1. Grinding machine frame; 2. Grinding table; 3. Grinding spindle; 4. Grinding mounting head; 5. Follow-up slot; 6. Mounting guide groove; 7. Cross spline; 8. Disc-shaped fixing seat; 9. Locating ring; 10. Sleeve groove; 11. Short column; 12. Guide limit rod; 13. Flexible grinding sleeve; 14. Grinding pad; 121. Extension slot; 122. Limit rod. DETAILED DESCRIPTION

[0018] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0019] See also Figure 1-3 The utility model provides an implementation scheme: In the polishing and fine grinding process of modern optical lenses, flexible grinding is mainly adopted. The current flexible grinding device mainly adopts a soft sleeve structure, and the top end is fixed to the grinding spindle 3 by a hoop. This structure leads to the problem of the soft sleeve being easily deflected and deformed when the bottom grinding pad 14 contacts the workpiece during the grinding process, which leads to a decrease in grinding accuracy.

[0020] In order to solve the above problems, the present application discloses a fine grinding and polishing tool for improving the processing accuracy of optical lenses. The tool is installed on a grinding frame 1. The grinding frame 1 is a rectangular frame structure. A grinding table 2 is provided on the grinding frame 1. The grinding table 2 is used to fix the workpiece to be polished. A grinding spindle 3 is provided on the grinding frame 1 corresponding to the grinding table 2. The end of the grinding spindle 3 is connected to a grinding mounting head 4 through a coupling. The power is output to the grinding mounting head 4 through the following movement of the grinding mounting head 4 and the grinding spindle 3. The grinding mounting head 4 is a structural main body that specifically realizes the connection of the flexible polishing sleeve 13;

[0021] Specifically, in order to solve the problem of the flexible polishing sleeve 13 being offset during the polishing process, the flexible polishing sleeve 13 is sleeved on the dish-shaped fixing seat by setting a dish-shaped fixing seat, and the upper end of the flexible fixing sleeve is stretched open by the expansion of the dish-shaped portion. Specifically, the polishing is carried out so that the polishing pad 14 contacts the surface of the optical lens, and the top end of the flexible fixing sleeve is fixed by the positioning ring 9 to ensure that the upper end of the flexible polishing sleeve 13 is tightened. At the same time, the dish-shaped structure is stretched and limited to prevent the flexible polishing sleeve 13 from being deformed by force, causing the polishing pad 14 to deviate from the center of the dish-shaped fixing seat.

[0022] Furthermore, in order to achieve the transmission of grinding torque, a follower slot 5 is radially opened on the grinding mounting head 4, and a mounting guide groove 6 is extended from the head end of the follower slot 5. The mounting guide groove 6 passes through the bottom end of the grinding mounting head 4. A short column 11 provided in the radial direction of the sleeve groove 10 is matched with the mounting guide groove 6 to achieve installation guidance. When the short column 11 runs into place, the guide limit rod 122 is locked with the follower slot 5, thereby achieving radial and axial connection and locking of the disc-shaped fixing seat and the follower slot 5.

[0023] Furthermore, in order to better transmit torque, after the disc-shaped fixing seat completely covers the grinding mounting head 4 through the sleeve groove 10, the torque is better transmitted to the disc-shaped fixing seat through the cross spline 7 set at the bottom end of the grinding mounting head 4, so that the disc-shaped fixing seat can output torque more stably.

[0024] According to the instruction manual Figure 1-3 It can be seen that the grinding and mounting head 4 is a plate with a columnar structure, and the bottom edge of the grinding and mounting head 4 is a sloped structure. The sloped structure plays a guiding role, making it easier to put the disc-shaped fixing seat on the grinding and mounting head 4.

[0025] According to the instruction manual Figure 1-3 It can be seen that the disc-shaped fixing seat 8 is inserted from the bottom end of the grinding and mounting head 4 so that the short column 11 is aligned with the mounting guide groove 6 for installation, which facilitates installation guidance.

[0026] According to the instruction manual Figure 1-3 It can be seen that the central sleeve groove 10 of the disc-shaped fixing seat 8 is provided with a spline groove that engages with the cross spline 7, making it more convenient to transmit torque.

[0027] According to the instruction manual Figure 1-3 It can be seen that the above-mentioned guide limit rod 122 is composed of an extension groove 121 opened on the short column 11 and a limit rod 122 threadedly installed in the extension groove 121. When the short column 11 is aligned with the follow-up slot 5, the limit rod 122 is rotated to engage with the extension groove 121 threadably, so that the limit rod 122 is screwed into the follow-up slot 5, so that the follow-up slot 5 and the limit rod 122 are also threadedly engaged, thereby realizing axial and radial locking.

[0028] From the above, it can be generally known that the fine grinding and polishing tooling for improving the processing accuracy of optical lenses adopts a split structure of a flexible connecting sleeve and a disc-shaped fixed seat to form a specific execution mechanism for grinding. During installation, the disc-shaped fixed seat is installed in a set manner, and a guide limit rod 122 with a threaded structure is provided to lock the fixed seat and the grinding mounting head 4 to ensure the stability of grinding, and the flexible limit sleeve is limited by the disc structure to avoid excessive deformation of the flexible limit sleeve under force, thereby effectively improving the accuracy of grinding.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fine grinding and polishing tool for improving the processing accuracy of optical lenses, comprising a grinding frame (1), the grinding frame (1) being a rectangular frame structure, a grinding table (2) being provided on the grinding frame (1), a grinding spindle (3) being provided on the grinding frame (1) corresponding to the grinding table (2), and characterized in that: The end of the grinding spindle (3) is connected to a grinding mounting head (4) via a coupling; A follower slot (5) is radially provided on the polishing and mounting head (4), a mounting guide slot (6) extends from the head end of the follower slot (5), and the mounting guide slot (6) passes through the bottom end of the polishing and mounting head (4); The bottom end of the grinding and mounting head (4) is provided with a cross spline (7); The grinding mounting head (4) is provided with a disc-shaped fixing seat (8), a positioning ring (9) extends from the top of the disc-shaped fixing seat (8), a cylindrical sleeve groove (10) is provided in the center of the disc-shaped fixing seat (8) and passes through the top of the positioning ring (9), a short column (11) is provided on one side of the top of the sleeve groove (10), and a guide limit rod (122) (12) is installed on the short column (11); A flexible polishing sleeve (13) is provided on the disc-shaped fixing seat (8), an end of the flexible polishing sleeve (13) is connected to the positioning ring (9), and a polishing pad (14) is provided at the bottom end of the flexible polishing sleeve (13).

2. A fine grinding and polishing tool for improving the processing accuracy of optical lenses according to claim 1, characterized in that: The grinding and mounting head (4) is a plate with a columnar structure, and the bottom edge of the grinding and mounting head (4) is a sloped structure.

3. The fine grinding and polishing tool for improving the processing accuracy of optical lenses according to claim 2, characterized in that: The disc-shaped fixing seat (8) is inserted from the bottom end of the grinding installation head (4) so ​​that the short column (11) is aligned with the installation guide groove (6) for installation.

4. The fine grinding and polishing tool for improving the processing accuracy of optical lenses according to claim 3, characterized in that: The center sleeve groove (10) of the disc-shaped fixing seat (8) is provided with a spline groove that engages with the cross spline (7).

5. The fine grinding and polishing tool for improving the processing accuracy of optical lenses according to claim 4, characterized in that: The guide limiting rod (122) (12) is composed of an extension groove (121) provided on the short column (11) and a limiting rod (122) threadedly installed in the extension groove (121).

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