A grinding jig suitable for large thickness ratio lenses

Abstract

The utility model discloses a kind of grinding fixtures suitable for big thick thin ratio lens, including base and rotating member. One clamping arm is equipped on base, and clamping area is formed in the middle of base. Rotating hole is formed in the middle of rotating member, and the inner wall of rotating hole is equipped with a protruding part matched with clamping arm, rotating member is rotated, and protruding part keeps clamping arm to be pushed to the center of clamping area close. The grinding fixture suitable for big thick thin ratio lens is rotated by rotating member, so that protruding part pushes clamping arm to be stressed and deformed, close to lens, and it is clamped in clamping area. Not only its structural component is less, and it is convenient to use, manufacturing difficulty bottom, low cost. At the same time, lens will not be damaged when clamping, improve the stability of lens clamping.

Description

Technical Field

[0001] This utility model relates to jig technology, and more particularly to a grinding jig suitable for lenses with a large thickness-to-thin ratio. Background Technology

[0002] A lens is an optical element made of a transparent material with a surface that is part of a sphere. A camera lens consists of several lenses, and there are two types: plastic lenses and glass lenses. Glass lenses are more expensive than plastic lenses. Common camera lens configurations include 1P, 2P, 1G1P, 1G2P, 2G2P, and 4G, with more lenses increasing the cost. Therefore, a high-quality camera should use a glass lens, as its image quality is better than that of a plastic lens, playing a vital role in fields such as astronomy, military, transportation, medicine, and art.

[0003] Before grinding, the lens needs to be positioned to ensure that its position remains unchanged. For this purpose, a simple and stable tool is needed to hold the lens. Utility Model Content

[0004] To address the shortcomings of the existing technology, this invention proposes a grinding fixture suitable for lenses with a large thickness-to-thin ratio.

[0005] A grinding fixture suitable for lenses with a large thickness-to-thinness ratio, characterized in that it comprises: A base, on which a clamping arm is provided, and a clamping area is formed in the middle of the base; A rotating component is mounted on the base. A rotating hole is formed in the middle of the rotating component. A protrusion that cooperates with the clamping arm is provided on the inner wall of the rotating hole. When the rotating component is rotated, the protrusion pushes the clamping arm closer to the center of the clamping area.

[0006] In this grinding fixture for lenses with a large thickness-to-thin ratio, the rotating part is provided with multiple arc-shaped grooves, and bolts are provided in the arc-shaped grooves. The bolts pass through the arc-shaped grooves and are connected to the base.

[0007] In this grinding fixture for lenses with a large thickness-to-thin ratio, the base consists of a fixed plate and an arc-shaped ring, the clamping area is formed in the middle of the arc-shaped ring, and the clamping arm is disposed on the arc-shaped ring.

[0008] In this grinding fixture for lenses with a large thickness-to-thinness ratio, one end of the clamping arm is connected to one end of the arc-shaped ring by a connecting section, the connecting section having a notch, and the other end forming a gap with the other end of the arc-shaped ring.

[0009] In this grinding fixture for lenses with a large thickness-to-thinness ratio, the clamping arm is provided with a guide arc surface, a sliding surface and a blocking surface, and the protrusion reaches the sliding surface and the blocking surface along the guide arc surface.

[0010] The grinding fixture for lenses with a large aspect ratio, as described in this invention, has the following advantages: By rotating the rotating component, the protrusion pushes the clamping arm to deform under force, bringing it closer to the lens and clamping it within the clamping area. It not only has fewer structural components and is easy to use, but it is also easy to manufacture and inexpensive. Furthermore, it does not damage the lens during clamping, improving the stability of lens clamping. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the grinding fixture structure of the present invention, which is suitable for lenses with a large thickness-to-thinness ratio. Figure 2 for Figure 1 Top view; Figure 3 for Figure 1 Exploded view; Figure 4 for Figure 3 A schematic diagram of the base structure in the diagram; Figure 5 for Figure 4 A schematic diagram of the structure in another direction; Figure 6 for Figure 3 A schematic diagram of the rotating component structure. Detailed Implementation

[0012] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0013] like Figures 1 to 6 As shown, this grinding fixture for lenses with a large thickness-to-thinness ratio includes a base 1 and a rotating member 2. The rotating member 2 is mounted on the base 1 and can rotate on the base 1, thereby pushing the clamping arm 3 to deform and clamp the lens 5 located in the clamping area 4.

[0014] A clamping arm 3 is provided on the base 1, and a clamping area 4 is formed in the middle of the base 1. The base 1 consists of a fixed plate 6 and an arc-shaped ring 7, with the clamping area 4 formed in the middle of the arc-shaped ring 7, and the clamping arm 3 is disposed on the arc-shaped ring 7. The thickness of the clamping arm 3 is less than the thickness of the arc-shaped ring 7, and the clamping arm 3 is kept separate from the fixed plate 6.

[0015] One end of the clamping arm 3 is connected to one end of the arc-shaped ring 7 via a connecting section 8. The connecting section 8 has a notch 9, which allows the clamping arm 3 to deform and enter the clamping area 4 when it is pushed by force. A gap 10 is formed between the other end and the other end of the arc-shaped ring 7, which disconnects the clamping arm 3 from the arc-shaped ring 7.

[0016] The clamping arm 3 is provided with a guide arc surface 11, a sliding surface 12 and a blocking surface 13, and the protrusion 15 reaches the sliding surface 12 and the blocking surface 13 along the guide arc surface 11.

[0017] The rotating component 2 is mounted on the base 1. A rotating hole 14 is formed in the middle of the rotating component 2. A protrusion 15 that cooperates with the clamping arm 3 is provided on the inner wall of the rotating hole 14. When the rotating component 2 is rotated, the protrusion 15 pushes the clamping arm 3 closer to the center of the clamping area 4. The rotating component 2 is provided with multiple arc-shaped grooves 16. Bolts 17 are installed in the arc-shaped grooves 16 and are connected to the base 1 through the arc-shaped grooves 16.

[0018] During clamping, simply place the lens 5, which is smaller than the diameter of the clamping area 4, within the clamping area 4. Then, rotate the rotating member 2, causing the protrusion 15 to push the clamping arm 3 under force and deform. This allows the protrusion 15 to gradually reach the sliding surface 12, where it is blocked by the blocking surface 13. Since the sliding surface 12 is a horizontal plane and differs from the guide arc surface 11, it restricts the resetting of the clamping arm 3. When it is necessary to remove the clamp, simply rotate the rotating member 2 in the opposite direction.

[0019] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A grinding fixture suitable for lenses with a large thickness-to-thin ratio, characterized in that, include: A base, on which a clamping arm is provided, and a clamping area is formed in the middle of the base; A rotating component is mounted on the base. A rotating hole is formed in the middle of the rotating component. A protrusion that cooperates with the clamping arm is provided on the inner wall of the rotating hole. When the rotating component is rotated, the protrusion pushes the clamping arm closer to the center of the clamping area.

2. The grinding fixture for lenses with a large thickness-to-thinness ratio according to claim 1, characterized in that, The rotating component has multiple arc-shaped grooves, and bolts are installed in the arc-shaped grooves. The bolts pass through the arc-shaped grooves and are connected to the base.

3. The grinding fixture for lenses with a large thickness-to-thickness ratio according to claim 1, characterized in that, The base consists of a fixed plate and an arc-shaped ring, with the clamping area formed in the middle of the arc-shaped ring, and the clamping arm disposed on the arc-shaped ring.

4. The grinding fixture for lenses with a large thickness-to-thickness ratio according to claim 3, characterized in that, One end of the clamping arm is connected to one end of the arc-shaped ring by a connecting section, the connecting section having a notch, and the other end forming a gap with the other end of the arc-shaped ring.

5. The grinding fixture for lenses with a large thickness-to-thinness ratio according to claim 1, characterized in that, The clamping arm is provided with a guide arc surface, a sliding surface and a blocking surface, and the protrusion reaches the sliding surface and the blocking surface along the guide arc surface.

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