Fixing tool for polyhedral prism

By designing a fixed tooling for polyhedral prisms, using a combination of base, positioning seat, movable limiter and guide side plate, the problem of broken edges and corners caused by traditional fixed tooling is solved, and multi-dimensional fixing and optics of prisms are realized. reduction in surface pollution.

CN222371422UActive Publication Date: 2025-01-21SHANGHAI MODERN ADVANCED ULTRA PRECISION MFG CENT
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Patent Information

Application Number
CN202421053478.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-15
Publication Date
2025-01-21
Estimated Expiration
2034-05-15

AI Technical Summary

Technical Problem

Traditional optical prism fixing tooling is prone to breaking edges and edges, and it is difficult to effectively fix the polyhedral prism, resulting in optical surface pollution and quality problems during the detection process.

Method used

A fixing tooling for polyhedral prisms is designed, including a base, a positioning seat, a movable limiter and a guide side plate. By optimizing the structure, the prism can be fixed in multiple dimensions while avoiding direct contact with the optical surface.

Benefits of technology

It achieves multi-dimensional fixation of prisms, avoids breakage of edges and corners, reduces optical surface contamination, and improves detection accuracy and safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of optical lenses. A fixing tool for a polyhedral prism comprises a base, and the base is provided with an obliquely-arranged installation face. A positioning seat is further included, the positioning seat comprises a mounting plate, the mounting plate is detachably connected with the base through a screw, and the head of the screw is embedded in the mounting plate; the cross section of the mounting plate is polygonal; the edges of the opposite sides of the mounting plate are fixedly connected with guide side plates which extend away from the mounting surface and are used for guiding the sliding-in polyhedral prism to slide in the first linear direction, and the guide side plates are in threaded connection with limiting pieces; the edge of the mounting plate is fixedly connected with a limiting protrusion extending away from the mounting face. The limiting protrusion is located at the end, in the first linear direction, of the mounting plate. The device further comprises a movable limiting piece, the movable limiting piece is detachably installed on the outer side of the installation plate, a limiting part is arranged on the movable limiting piece, and the limiting part and the installation plate are used for clamping the opposite sides of the polyhedral prism in the second linear direction. According to the utility model, the fixing effect of the optical lens is ensured.
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Description

Technical Field

[0001] The utility model relates to the technical field of optical mirrors, in particular to a fixing tool for optical mirrors. Background Art

[0002] When an optical prism is used to detect an optical surface, it is often necessary to fix the optical prism.

[0003] In the traditional fixture designed with the shape of the prism, this type of mold uses a supporting groove that matches the corner structure of the prism for support, which has a large contact area with the optical surface and is easy to cause contamination to the optical surface. Since there are few limiting surfaces with the prism and it can only support, it is also easy to cause quality problems such as broken edges and corners of the prism during the inspection process.

[0004] At present, how to ensure the fixation of the polyhedral prism while reducing the damage to the edges and corners is one of the directions for continuous design and improvement of fixing tooling. Utility Model Content

[0005] In view of the problems existing in the prior art, the utility model provides a fixing device for a polyhedral prism, which solves at least one of the above-mentioned technical problems.

[0006] The technical solution of the utility model is: a fixing tool for a polyhedral prism, characterized in that it comprises a base, and the base is provided with an inclined mounting surface;

[0007] It also includes a positioning seat, the positioning seat includes a mounting plate for being close to the mounting surface, the mounting plate and the base are detachably connected by screws, and the heads of the screws are embedded in the mounting plate;

[0008] The cross section of the mounting plate is polygonal;

[0009] The edge of the opposite side of the mounting plate is fixedly connected with a guide side plate extending away from the mounting surface and used to guide the polyhedral prism to slide in along the first straight line direction, and the guide side plate is threadedly connected with a limit piece;

[0010] The edge of the mounting plate is fixedly connected with a limiting protrusion extending away from the mounting surface, and the limiting protrusion is located at the end of the mounting plate along the first straight line direction;

[0011] It also includes a movable limiting member, which can be detachably mounted on the outer side of the mounting plate. A limiting portion is arranged on the movable limiting member. The limiting portion and the mounting plate are used to clamp the polyhedral prism on opposite sides along a second straight line direction, and the first straight line direction is perpendicular to the second straight line direction.

[0012] The utility model optimizes the structure of the fixing fixture to achieve multi-dimensional fixation of the prism while ensuring the fixing effect of the optical lens, avoiding the quality problems such as the edges and corners of the prism being easily broken due to the lack of constraints on the optical surface in the traditional method.

[0013] Further preferably, the movable stopper is detachably mounted on the bottom area of ​​the mounting plate when the mounting plate is in close contact with the mounting surface;

[0014] The movable limiting member comprises a mounting portion, an inclined portion and the limiting portion which are connected in sequence;

[0015] The included angle between the mounting portion and the inclined portion is an obtuse angle, and the included angle between the inclined portion and the limiting portion is an obtuse angle.

[0016] Achieve downward support.

[0017] Further preferably, a concave avoidance groove is provided at the center of one side of the mounting plate away from the mounting surface, and the limiting protrusion is located at the periphery of the avoidance groove.

[0018] The avoidance groove covers the light aperture range, thereby avoiding contamination of the light aperture range in the central area of ​​the prism.

[0019] Further preferably, a side surface of the guide side plate in the thickness direction is flush with the side wall of the mounting plate;

[0020] A notch is formed on the other side surface of the guide side plate in the thickness direction, and the notch is located in a region of the guide side plate away from the mounting plate.

[0021] Further preferably, the stopper is a nylon bolt. When the nylon bolt is tightened, it is best not to tighten it to the mirror surface of the prism, but to leave some gaps to prevent damage to the prism.

[0022] Further preferably, the guide side plate is provided with two threaded holes arranged side by side.

[0023] Further preferably, adjacent sides of the mounting plate are respectively provided with a fixed limiting structure and a movable limiting structure;

[0024] The movable limiting structure is a threaded hole detachably connected to the movable limiting member;

[0025] The fixed limiting structure is the limiting protrusion or the guide side plate.

[0026] Further preferably, the cross section of the mounting plate is an axially symmetrical hexagon.

[0027] Further preferably, the hexagon includes a first side, a second side, a third side, a fourth side, a fifth side and a sixth side connected in sequence;

[0028] The second side and the sixth side are parallel to each other;

[0029] The guide side plate is fixed to the second side and the sixth side of the mounting plate;

[0030] The limiting protrusion is fixed to the fourth side of the mounting plate;

[0031] The first side, the third side and the fifth side of the mounting plate are all provided with threaded holes for detachably connecting with the movable limiting member.

[0032] Further preferably, the polyhedral prism is an octahedron, and the polyhedral prism comprises a hexagonal bottom surface, a triangular top surface, and six optical surfaces, the six optical surfaces are respectively connected to six edges of the bottom surface, and the six optical surfaces are located between the top surface and the bottom surface;

[0033] The six optical surfaces include a first optical surface, a second optical surface, a third optical surface, a fourth optical surface, a fifth optical surface and a sixth optical surface connected in sequence;

[0034] The second optical surface and the sixth optical surface are parallel to each other;

[0035] The guide side plate is used to limit the second optical surface and the sixth optical surface;

[0036] The limiting protrusion is used to limit the fourth optical surface;

[0037] The movable stopper is used to stop any one of the first optical surface, the third optical surface or the fifth optical surface;

[0038] The limiting portion of the movable limiting member abuts against the top surface.

[0039] Compared with the prior art, the utility model has the following beneficial effects:

[0040] 1) The utility model realizes multi-dimensional displacement limitation of the prism through the cooperation of the mounting plate and the movable limiting member, realizes multi-faceted fixation of the prism with a polyhedral structure, improves the fixing effect of the prism, and avoids damage to corners and edges.

[0041] 2) The optical surface of the prism does not directly contact the tooling, thus avoiding contamination of the optical surface, thereby greatly reducing the risks that may arise during the inspection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is a structural schematic diagram of a specific embodiment 1 of the utility model;

[0043] Figure 2This is a structural schematic diagram of a positioning seat in specific embodiment 1 of the utility model;

[0044] Figure 3 This is a structural schematic diagram of a positioning seat connected to a movable limiting member in a specific embodiment 1 of the utility model;

[0045] Figure 4 A schematic structural diagram of a polyhedral prism according to a specific embodiment 1 of the utility model;

[0046] Figure 5 This is a structural schematic diagram of a specific embodiment 1 of the utility model when used to detect a first optical surface;

[0047] Figure 6 This is a structural schematic diagram of a specific embodiment 1 of the utility model when used to detect the third optical surface;

[0048] Figure 7 It is a structural schematic diagram of another viewing angle when specific embodiment 1 of the utility model is used to detect the third optical surface.

[0049] In the figure, 1 is a base, 2 is a positioning seat, 3 is a movable limiting member, 21 is a mounting plate, 22 is a guide side plate, 23 is a limiting protrusion, 31 is a limiting portion, 41 is a first optical surface, 42 is a second optical surface, 43 is a third optical surface, 44 is a fourth optical surface, and 45 is a fifth optical surface. DETAILED DESCRIPTION

[0050] See also Figures 1 to 7, Specific embodiment 1, a fixing tool for a polyhedral prism, comprising a base, on which an inclined mounting surface is arranged; also comprising a positioning seat 2, the positioning seat 2 comprising a mounting plate 21 for being close to the mounting surface, the mounting plate 21 and the base being detachably connected by screws, the heads of the screws being embedded in the mounting plate 21; the cross section of the mounting plate 21 is polygonal; the edges on the opposite sides of the mounting plate 21 are fixedly connected with guide side plates 22 extending away from the mounting surface and used to guide the polyhedral prism to slide in along a first straight line direction, and the guide side plates 22 are threadedly connected with a limiting member; the edge of the mounting plate 21 is fixedly connected with a limiting protrusion 23 extending away from the mounting surface, and the limiting protrusion 23 is located at the end of the mounting plate 21 along the first straight line direction; also comprising a movable limiting member 3, the movable limiting member 3 is detachably mounted on the outer side of the mounting plate 21, and a limiting portion 31 is arranged on the movable limiting member 3, the limiting portion 31 and the mounting plate 1 are used to clamp the opposite sides of the polyhedral prism along a second straight line direction, and the first straight line direction is perpendicular to the second straight line direction. The utility model optimizes the structure of the fixing fixture to achieve multi-dimensional fixation of the prism while ensuring the fixing effect of the optical mirror, avoiding the quality problems such as the edges and corners of the prism being easily broken due to the lack of constraints on the optical surface in the traditional method. The two export side plates are arranged along the third straight line direction. The third straight line direction is perpendicular to the first straight line direction and the second straight line direction.

[0051] The movable stopper 3 is detachably mounted on the bottom area of ​​the mounting plate 21 when it is close to the mounting surface; the movable stopper 3 includes a mounting portion, an inclined portion, and a stopper 31 connected in sequence; the angle between the mounting portion and the inclined portion is an obtuse angle, and the angle between the inclined portion and the stopper 31 is an obtuse angle. The lower support is realized. The mounting portion is detachably connected to the mounting plate.

[0052] A concave avoidance groove is provided in the center of the side of the mounting plate 21 away from the mounting surface, and the limiting protrusion 23 is located at the periphery of the avoidance groove. The avoidance groove covers the light aperture range to avoid contamination of the light aperture range in the central area of ​​the prism.

[0053] One side of the guide side plate 22 in the thickness direction is flush with the side wall of the mounting plate 1 ; the other side of the guide side plate 22 in the thickness direction is provided with a notch, and the notch is located in the area of ​​the guide side plate 22 away from the mounting plate 1 .

[0054] The stopper is a nylon bolt. When tightening the nylon bolt, it is best not to tighten it to the mirror surface of the prism, but to leave some gaps to prevent damage to the prism.

[0055] The guide side plate 22 is provided with two threaded holes arranged side by side.

[0056] Adjacent sides of the mounting plate 1 are respectively provided with a fixed limiting structure and a movable limiting structure; the movable limiting structure is a threaded hole detachably connected to a movable limiting member; the fixed limiting structure is a limiting protrusion 23 or a guide side plate 22 .

[0057] The cross section of the mounting plate 1 is an axially symmetrical hexagon. The hexagon includes a first side, a second side, a third side, a fourth side, a fifth side and a sixth side connected in sequence; the second side and the sixth side are parallel to each other; the guide side plate 22 is fixed to the second side and the sixth side of the mounting plate 1; the limiting protrusion 23 is fixed to the fourth side of the mounting plate 1; the first side, the third side and the fifth side of the mounting plate 1 are all provided with threaded holes for detachably connecting the movable limiting member 3.

[0058] The polyhedral prism is an octahedron, which includes a hexagonal bottom surface, a triangular top surface and six optical surfaces, the six optical surfaces are respectively connected to the six edges of the bottom surface, and the six optical surfaces are located between the top surface and the bottom surface; the six optical surfaces include a first optical surface 41, a second optical surface 42, a third optical surface 43, a fourth optical surface 44, a fifth optical surface 45 and a sixth optical surface connected in sequence; the second optical surface 42 and the sixth optical surface are parallel to each other; the guide side plate 22 is used to limit the second optical surface 42 and the sixth optical surface; the limiting protrusion 23 is used to limit the fourth optical surface 44; the movable limiting member 3 is used to limit any one of the first optical surface 41, the third optical surface 43 or the fifth optical surface 45; the limiting portion 31 of the movable limiting member 3 is against the top surface.

[0059] The mounting plate is used to contact the largest facet of the outer surface of the polygonal prism.

[0060] See Figure 1 and Figure 5 When used to detect the first optical surface 41 , the movable stopper 3 can be detachably mounted on the third side and the fifth side of the mounting plate. It is located outside the third optical surface 43 or the fifth optical surface 45 .

[0061] See also Figure 6 as well as Figure 7 When used to detect the third optical surface 43, the movable stopper 3 can be detachably mounted on the first side of the mounting plate. Located outside the first optical surface.

[0062] When in use, the positioning seat 2 is installed on the base 1;

[0063] Afterwards, the placement position of the prism is selected according to the surface that needs to be inspected, and the limiting protrusion 23 limits the displacement of one surface of the prism. At the same time, the guide side plate 22 contacts the prism adjacent to the mounting plate side to prevent movement of the two surfaces of the prism, and the guide side plate 22 does not directly contact the optical surface of the prism away from the mounting plate side to prevent contamination caused by direct contact of the optical surface with the tooling.

[0064] Then, at a position obliquely below the mounting plate 21, a suitable movable stopper 3 is selected and installed according to the detection surface of the prism to limit the displacement of the two surfaces of the prism.

[0065] After that, install the nylon bolts on the threaded holes of the side baffle. When tightening the nylon bolts, it is best not to screw them onto the mirror surface of the prism, but leave some gaps to prevent damage to the prism.

[0066] The above are only preferred implementations of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A fixing device for a polyhedral prism, characterized in that: It comprises a base, on which an inclined mounting surface is arranged; It also includes a positioning seat, the positioning seat includes a mounting plate for being close to the mounting surface, the mounting plate and the base are detachably connected by screws, and the heads of the screws are embedded in the mounting plate; The cross section of the mounting plate is polygonal; The edge of the opposite side of the mounting plate is fixedly connected with a guide side plate extending away from the mounting surface and used to guide the polyhedral prism to slide in along the first straight line direction, and the guide side plate is threadedly connected with a limit piece; The edge of the mounting plate is fixedly connected with a limiting protrusion extending away from the mounting surface, and the limiting protrusion is located at the end of the mounting plate along the first straight line direction; It also includes a movable limiting member, which can be detachably mounted on the outer side of the mounting plate. A limiting portion is arranged on the movable limiting member. The limiting portion and the mounting plate are used to clamp the polyhedral prism on opposite sides along a second straight line direction, and the first straight line direction is perpendicular to the second straight line direction.

2. The fixing device for a polyhedral prism according to claim 1, characterized in that: The movable stopper can be detachably mounted on the bottom area of ​​the mounting plate when the mounting plate is in close contact with the mounting surface; The movable limiting member comprises a mounting portion, an inclined portion and the limiting portion which are connected in sequence; The included angle between the mounting portion and the inclined portion is an obtuse angle, and the included angle between the inclined portion and the limiting portion is an obtuse angle.

3. The fixing device for a polyhedral prism according to claim 1, characterized in that: A concave avoidance groove is provided at the center of one side of the mounting plate away from the mounting surface, and the limiting protrusion is located at the periphery of the avoidance groove.

4. The fixing device for a polyhedral prism according to claim 1, characterized in that: A side surface of the guide side plate in the thickness direction is flush with the side wall of the mounting plate; A notch is formed on the other side surface of the guide side plate in the thickness direction, and the notch is located in a region of the guide side plate away from the mounting plate.

5. The fixing device for a polyhedral prism according to claim 1, characterized in that: The limiting member is a nylon bolt.

6. The fixing device for a polyhedral prism according to claim 1, characterized in that: The guide side plate is provided with two threaded holes arranged side by side.

7. The fixing device for a polyhedral prism according to claim 1, characterized in that: Adjacent sides of the mounting plate are respectively provided with a fixed limiting structure and a movable limiting structure; The movable limiting structure is a threaded hole detachably connected to the movable limiting member; The fixed limiting structure is the limiting protrusion or the guide side plate.

8. The fixing device for a polyhedral prism according to claim 1, characterized in that: The cross section of the mounting plate is an axially symmetrical hexagon.

9. The fixing device for a polyhedral prism according to claim 8, characterized in that: The hexagon includes a first side, a second side, a third side, a fourth side, a fifth side and a sixth side connected in sequence; The second side and the sixth side are parallel to each other; The guide side plate is fixed to the second side and the sixth side of the mounting plate; The limiting protrusion is fixed to the fourth side of the mounting plate; The first side, the third side and the fifth side of the mounting plate are all provided with threaded holes for detachably connecting with the movable limiting member.

10. The fixing device for a polyhedral prism according to claim 9, characterized in that: The polyhedral prism is an octahedron, comprising a hexagonal bottom surface, a triangular top surface, and six optical surfaces, the six optical surfaces are respectively connected to six edges of the bottom surface, and the six optical surfaces are located between the top surface and the bottom surface; The six optical surfaces include a first optical surface, a second optical surface, a third optical surface, a fourth optical surface, a fifth optical surface and a sixth optical surface connected in sequence; The second optical surface and the sixth optical surface are parallel to each other; The guide side plate is used to limit the second optical surface and the sixth optical surface; The limiting protrusion is used to limit the fourth optical surface; The movable stopper is used to stop any one of the first optical surface, the third optical surface or the fifth optical surface; The limiting portion of the movable limiting member abuts against the top surface.