Replaceable polishing head assembly for optical lens processing

Abstract

The application discloses a replaceable polishing head assembly for optical lens processing, which comprises an assembling base, a detachable assembling head arranged on the assembling base, and a polishing head with a ball head structure detachably arranged on the assembling head and positioned against the assembling head. A threaded hole is arranged in the assembling head, and the polishing head comprises a threaded section matched with the threaded hole. The threaded section is provided with a positioning table at the end of the threaded section, the positioning table is provided with a polishing ball core, and the axial length of the threaded section is smaller than the depth of the threaded hole. The polishing head can be quickly replaced after being worn out on the assembling head fixedly arranged on the assembling base, so that the problem that the polishing head height needs to be adjusted after the polishing ball core is worn out is solved. The polishing head replaced (worn out) can be used for polishing the small-radius lens arc surface in the later stage, so that the waste of the polishing head after being worn out is avoided.

Description

Technical Field

[0001] This application relates to the field of lens processing technology, and in particular to a replaceable polishing head assembly for optical lens processing. Background Technology

[0002] Fine grinding and polishing are core processes in optical lens manufacturing, directly determining the lens's image quality, durability, and visual effect. Fine grinding, through mechanical abrasion, processes the lens blank according to the designed curvature, removing scratches and unevenness left by coarse grinding. Polishing, through ultrafine abrasives and chemical action, eliminates scratches remaining from fine grinding, reduces surface roughness, and achieves an ultra-smooth surface.

[0003] In the field of lens polishing, the upper pendulum machine is a device specifically designed for the fine grinding and polishing of high-precision optical lenses. Its application scenarios, technical principles, and characteristics are as follows:

[0004] Currently, the upper-mounted grinding and polishing machine can be used for spherical fine grinding and polishing of optical lenses, suitable for high-volume, high-requirement lens production. It is mounted as per the instruction manual. Figure 1 The polishing head shown can polish lenses. The polishing head includes a base post that can be inserted into a mounting base on an upper frame, and an integrally formed polishing ball core on the base post, such as... Figure 2 As shown, the circular arc structure on the surface of this polishing ball core enables the grinding and polishing of the lens's circular chamfer. During the continuous grinding and polishing process, the material at the top of the polishing head, such as polyurethane polishing pads or black glue, will also be worn down, reducing its height and consequently decreasing its grinding capacity. Therefore, after the height decreases, it is necessary to... Figure 3 The method shown is to move the base post and polishing ball core upwards compared to the mounting base, so that they can still contact the lens to be polished after wear, and to ensure polishing accuracy.

[0005] Because the polishing of lenses requires high precision, the base post needs to be adjusted each time the polishing ball wears out, extending the polishing cycle. Furthermore, when the polishing ball is excessively worn, new polishing material needs to be re-attached, increasing polishing costs. Summary of the Invention

[0006] To address the aforementioned problems, this application aims to provide a replaceable polishing head assembly for optical lens processing, which allows for quick replacement of the polishing head, solving the problem of needing to readjust the polishing head height after the polishing ball core wears out, and improving the efficiency of lens polishing operations.

[0007] To achieve the above objectives, the technical solution adopted in this application is as follows: a replaceable polishing head assembly for optical lens processing, including an assembly base, on which a detachable assembly head is provided, and a polishing head with a ball head structure is detachably assembled, and the polishing head is positioned after abutting against the assembly head.

[0008] Preferably, the top of the mounting base is provided with an inner hole, and the side wall is provided with a threaded hole that communicates with the inner hole. The mounting head is embedded in the inner hole and fixed by a knob passing through the threaded hole. The height of the mounting head in the inner hole is adjusted according to the radius of curvature of the polishing head, and the mounting head can be replaced according to the diameter of the processed lens.

[0009] Preferably, the assembly head has a threaded hole, and the polishing head includes a threaded section that mates with the threaded hole. The end of the threaded section is provided with a positioning platform that abuts against the top of the assembly head. A polishing ball core is provided on the positioning platform, and the axial length of the threaded section is less than the depth of the threaded hole.

[0010] The beneficial effects of this application are: the assembly head fixedly mounted on the assembly base disclosed in this application allows for the quick replacement of the polishing head after wear, solving the problem of needing to readjust the polishing head height after the polishing ball core wears. The replaced (worn) polishing head can then be used for polishing small-radius lens arc surfaces, avoiding the waste of the worn polishing head. Attached Figure Description

[0011] Figure 1 This is a diagram showing the current polishing head and its assembly on the mounting base.

[0012] Figure 2 This diagram illustrates the current state of polishing, showing the contact between the polishing head and the lens during polishing.

[0013] Figure 3 This diagram illustrates the current adjustment of the polishing ball core position after the polishing head wears out.

[0014] Figure 4 This is a diagram of the polishing head used in this application.

[0015] Figure 5 This is a schematic diagram of the threaded hole structure on the assembly head for this application.

[0016] Figure 6 This diagram illustrates the polishing head of this application mounted on an assembly head.

[0017] Figure 7 This illustration shows the replacement of the polishing head for this application.

[0018] In the diagram: 34 - base column; 5 - lens. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions of this application will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] See attached document Figures 1-7The disclosed replaceable polishing head assembly for optical lens processing includes an assembly base 1, which is typically mounted on an upper swing machine. To address the current issues of difficulty in precisely adjusting the position of the polishing ball core after wear, and the insufficient polishing precision required for the curved surface of the lens 5 necessitating further grinding, the assembly base 1 is equipped with a detachable assembly head 2. A spherical polishing head 3 is detachably mounted on this assembly head 2, and the polishing head 3 is positioned by abutting against the assembly head 2. The polishing head 3 can be replaced; after prolonged polishing wear, it can be replaced, and the replaced polishing head 3, when assembled with the assembly head 2, achieves proper positioning, thus solving the problem of difficulty in precisely adjusting the polishing ball core after wear. The worn polishing head 3 can be reused for polishing small-radius lens arc surfaces (e.g., the polishing ball core of the new polishing head 3 is used for 0.8mm radius arc chamfering, and when it wears down to 0.7mm, it can be used for subsequent 0.7mm arc chamfering lens polishing), avoiding the waste of the worn polishing head 3. The polishing head 3 is detachably connected to the assembly head 2, solving the current problem of simultaneous discarding of the base post after the polishing ball core wears out.

[0021] Specifically, to achieve rapid assembly, fixing, and replacement of assembly head 1, such as... Figure 5 As shown, the top of the mounting base 1 has an inner hole (not shown in the figure), and the side wall has a threaded hole (not shown in the figure) that communicates with the inner hole. A knob 4 is threaded through the inner thread of the threaded hole, and the thread length of the knob 4 is greater than the inner thread length of the threaded hole so that the end of the knob 4 can extend into the inner hole of the mounting base 1. The mounting head 2 is embedded in the inner hole and fixed by the knob 4 through the threaded hole. The height of the mounting head 2 in the inner hole can be adjusted according to the radius of curvature of the polishing head 3. To facilitate the processing of lenses of different diameters, the mounting head 2 can be replaced by disengaging the knob 4 from the mounting head 2, allowing for the replacement of mounting heads of different heights.

[0022] Specifically, to facilitate the replacement of polishing head 3, such as Figure 4-7 As shown, the assembly head 2 has a threaded hole 2a, and the polishing head 3 includes a threaded section 31 that mates with the threaded hole 2a. The end of the threaded section 31 is provided with a positioning platform 32 that abuts against the top of the assembly head 2. A polishing ball core 33 is mounted on the positioning platform 32. The threaded engagement allows for quick disassembly of the worn polishing head 3 and assembly of a new polishing head 3. To achieve proper positioning after assembly, the axial length of the threaded section 31 is less than the depth of the threaded hole 2a. That is, when the polishing head 3 is tightened, its positioning platform 32 abuts against the top of the assembly head 2, achieving the positioning and assembly of the polishing ball core 33. This avoids the problem of the threaded section 31 being too long and abutting against the bottom of the threaded hole 2a, which would affect the assembly accuracy of the polishing head 3.

[0023] The principle of this application is as follows: During the lens polishing operation, the polishing head is assembled into the threaded hole 2a of the assembly head 2 using a threaded fit structure, which enables the positioning of the polishing head 3. When the polishing ball core 33 wears out after prolonged use, the polishing head 3 can be rotated in the reverse direction to disassemble and quickly replace it. The replaced polishing head 3 can then be used for the re-polishing of lenses with smaller polishing sizes.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this application. Various changes and modifications may be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims.

Claims

1. A replaceable polishing head assembly for optical lens processing, comprising an assembly base (1), characterized in that: The assembly base (1) is provided with a detachable assembly head (2), on which a polishing head (3) with a ball head structure is detachably assembled, and the polishing head (3) is positioned after it abuts against the assembly head (2).

2. The polishing head assembly according to claim 1, characterized in that: The top of the mounting base (1) is provided with an inner hole, and the side wall is provided with a threaded hole that communicates with the inner hole. The mounting head (2) is embedded in the inner hole and fixed by a knob (4) passing through the threaded hole. The height of the mounting head (2) in the inner hole is adjusted according to the radius of curvature of the polishing head (3), and the mounting head (2) can be replaced according to the diameter of the processed lens.

3. The polishing head assembly according to claim 2, characterized in that: The assembly head (2) has a threaded hole (2a) inside. The polishing head (3) includes a threaded section (31) that mates with the threaded hole (2a). The end of the threaded section (31) is provided with a positioning table (32) that abuts against the top of the assembly head (2). A polishing ball core (33) is provided on the positioning table (32). The axial length of the threaded section (31) is less than the depth of the threaded hole (2a).

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