Dual-platform lens parallelism detection fixture and its usage method

Abstract

The present invention provides a dual-platform lens parallelism detection fixture and its usage method, including a base. A zeroing piece positioning fixture that fits against the side surface of the base is provided on the side of the base. In the middle above the base, there is a positioning tube. The upper end surface of the positioning tube is a reference surface. A sleeve is sleeved inside the positioning tube. A pair of arc-shaped pieces are symmetrically arranged on the upper surface of the sleeve. The structure of the present invention is simple and reasonably designed. According to the assembly bearing area, a corresponding measuring fixture is designed to meet the absolute parallel requirement of the assembly surface required for assembly, ensuring the measurement accuracy, and having practicality and innovation.

Description

Technical Field

[0001] The present invention relates to a double-platform lens parallelism detection jig and a method for using the same. Background Art

[0002] In recent years, due to the obvious improvement of the lens assembly yield of double-platform bearing lenses, more and more double-platform lens designs have emerged. However, the jig for measuring the parallelism of double-platform lenses has always been in a blank state, resulting in a large detection error of the parallelism for the processing of spherical lenses and making it difficult to ensure accurate measurement. Summary of the Invention

[0003] The present invention improves the above problems. That is, the technical problem to be solved by the present invention is to provide a double-platform lens parallelism detection jig, which has a simple structure and is convenient to use, and can effectively ensure the measurement accuracy.

[0004] The specific implementation of the present invention is: providing a double-platform lens parallelism detection jig, including a base. A zeroing piece positioning jig that fits the side surface of the base is provided on the side of the base. A positioning tube is provided in the middle above the base. The upper end surface of the positioning tube is a reference surface. A sleeve is sleeved outside the positioning tube. A pair of arc-shaped pieces are symmetrically arranged on the upper surface of the sleeve.

[0005] Further, the upper surface of the arc-shaped piece is higher than the upper surface of the positioning tube.

[0006] Further, the sleeve is cylindrical, and a through hole for the positioning tube to pass through is provided in the middle of the sleeve.

[0007] Further, the surface of the zeroing piece positioning jig that fits the base is an arc surface. The base is cylindrical, and the radian of the arc surface is the same as the radian of the base.

[0008] Further, an arc-shaped groove is provided at one end of the arc-shaped piece close to the through hole. The radian of the two arc-shaped grooves is the same as the radian of the through hole, and the edge of the arc-shaped groove overlaps with the edge of the through hole.

[0009] Further, the diameter of the sleeve is smaller than the diameter of the base.

[0010] Furthermore, a method for using a dual-platform lens parallelism detection fixture includes the following steps: (1) Fix the base and the zeroing piece positioning fixture, and make the outer side surface of a part of the base completely fit the arc surface of the zeroing piece positioning fixture; (2) Zero the reference surface: Place the zeroing lens on the reference surface, and at the same time make the outer circle of the zeroing lens completely fit the arc surface of the zeroing piece positioning fixture (the arc of the zeroing lens is the same as that of the arc surface of the zeroing piece positioning fixture), and then adjust the light spot of the laser collimator to the zero position; (3) Sleeve the sleeve onto the positioning tube, then install the lens, and finally place the zeroing lens on the lens and fit it to the zeroing piece positioning fixture; (4) Read the distance between the light spot on the collimator and the zero position, and the parallelism value of the part can be obtained.

[0011] Compared with the prior art, the present invention has the following beneficial effects: The device is reasonably designed and has a simple structure. According to the assembly bearing area of the lens, a corresponding measuring fixture is designed to meet the requirement of absolute parallelism of the assembly surface required for assembly, ensure the measurement accuracy, and has practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic structural diagram of an embodiment of the present invention;

[0013] Figure 2 It is a schematic structural diagram of the base of an embodiment of the present invention;

[0014] Figure 3 It is a schematic structural diagram of the sleeve of an embodiment of the present invention;

[0015] Figure 4 It is a schematic structural diagram of the zeroing piece positioning fixture of an embodiment of the present invention.

[0016] In the figure: 1 - base, 2 - zeroing piece positioning fixture, 21 - arc surface, 3 - positioning tube, 31 - reference surface, 4 - sleeve, 41 - through hole, 5 - arc piece, 51 - arc groove, 6 - rounded corner. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0018] Embodiment: As Figures 1 to 4 shown, in this embodiment, a dual-platform lens parallelism detection fixture includes a base 1, a zeroing piece positioning fixture 2 that fits the side surface of the base is arranged on the side of the base 1, a positioning tube 3 is arranged in the middle above the base 1, the upper end surface of the positioning tube 3 is a reference surface 31, a sleeve 4 is sleeved outside the positioning tube 3, and a pair of arc pieces 5 are symmetrically arranged on the upper surface of the sleeve 4.

[0019] In this embodiment, the base and the positioning tube can be integrated. The upper end surface of the positioning tube is used as the reference surface, and the design dimensions are the same as the bearing surface during lens assembly. The function of the sleeve is to position the part. The function of the zeroing piece positioning fixture is to position the zeroing lens (the zeroing piece is a lens with double-sided light transmission and absolute parallelism).

[0020] In this embodiment, the upper surface of the arc-shaped piece 5 is slightly higher than the upper surface of the positioning tube 3.

[0021] In this embodiment, in order to avoid easy scratching when the sharp end touches, the upper and lower edges of the base are provided with rounded corners 6.

[0022] In this embodiment, the sleeve 4 is cylindrical, and a through hole 41 for the positioning tube to pass through is provided in the middle of the sleeve 4.

[0023] In this embodiment, the surface of the zeroing piece positioning fixture 2 that fits the base is an arc-shaped surface 21. The base is cylindrical, and the radian of the arc-shaped surface is the same as that of the base.

[0024] In this embodiment, an arc-shaped groove 51 is provided at one end of the arc-shaped piece 5 close to the through hole. The radian of the two arc-shaped grooves is the same as that of the through hole, and the edge of the arc-shaped groove overlaps with the edge of the through hole.

[0025] In this embodiment, the diameter of the sleeve is smaller than the diameter of the base.

[0026] In this embodiment, during use, first, fix the base 1 and the zeroing piece positioning fixture 2, and make the outer side surface of part of the base completely fit the arc-shaped surface of the zeroing piece positioning fixture; zeroing the reference surface: place the zeroing lens on the reference surface, and at the same time make the outer circle of the zeroing lens completely fit the arc-shaped surface 21 of the zeroing piece positioning fixture (the radian of the zeroing lens is the same as that of the arc-shaped surface of the zeroing piece positioning fixture), then adjust the laser collimator so that the light spot is at the zero position; sleeve the sleeve onto the positioning tube, then install the lens, and finally place the zeroing lens on the lens and fit it to the zeroing piece positioning fixture; read the distance between the light spot on the collimator and the zero position, and the parallelism value of the part can be obtained.

[0027] For any of the technical solutions disclosed in the present invention above, unless otherwise stated, if it discloses a numerical range, the disclosed numerical range is the preferred numerical range. Any person skilled in the art should understand that the preferred numerical range is only the numerical values with obvious technical effects or representativeness among many implementable numerical values. Since there are too many numerical values to list them all, the present invention only discloses some numerical values to illustrate the technical solutions of the present invention, and the above-listed numerical values should not constitute a limitation on the protection scope of the present invention.

[0028] Meanwhile, if the above-mentioned present invention discloses or involves components or structural parts that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, using bolts or screws), or it can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutually fixed connection can also be replaced by an integral structure (for example, manufactured by integral forming using casting technology) (except when it is obviously impossible to adopt the integral forming process).

[0029] If terms such as "first" and "second" are used in this article to limit components, those skilled in the art should be aware that the use of "first" and "second" is only for the convenience of distinguishing components in description. Unless otherwise stated, the above terms have no special meaning.

[0030] In addition, in any of the technical solutions disclosed in the above-mentioned present invention, the terms used to represent the positional relationship or shape, unless otherwise stated, include states or shapes that are approximate, similar, or close to them.

[0031] Any component provided by the present invention can either be assembled from a plurality of separate components or be a single component manufactured by an integral forming process.

[0032] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: it is still possible to modify the specific implementation manners of the present invention or perform equivalent replacements for some technical features; without departing from the spirit of the technical solutions of the present invention, they should all be covered within the scope of the technical solutions claimed by the present invention.

Claims

1. A dual-platform lens parallelism detection fixture, characterized in that, it includes a base. A zeroing piece positioning fixture that fits the side surface of the base is arranged on the side of the base. In the middle above the base, there is a positioning tube. The upper end surface of the positioning tube is the reference surface. A sleeve is sleeved outside the positioning tube. A pair of arc-shaped pieces are symmetrically arranged on the upper surface of the sleeve; the upper surface of the arc-shaped piece is higher than the upper surface of the positioning tube; the surface of the zeroing piece positioning fixture that fits the base is an arc surface. The base is cylindrical, and the radian of the arc surface is the same as the radian of the base.

2. The dual-platform lens parallelism detection fixture according to claim 1, characterized in that, the sleeve is cylindrical, and a through hole for the positioning tube to pass through is arranged in the middle of the sleeve.

3. The dual-platform lens parallelism detection fixture according to claim 1, characterized in that, an arc-shaped groove is provided at one end of the arc-shaped piece close to the through hole. The radian of the two arc-shaped grooves is the same as the radian of the through hole, and the edge of the arc-shaped groove overlaps with the edge of the through hole.

4. The dual-platform lens parallelism detection fixture according to claim 1, characterized in that, the diameter of the sleeve is smaller than the diameter of the base.

5. A method for using the dual-platform lens parallelism detection fixture according to any one of claims 1 to 4, characterized in that, it includes the following steps: (1) Fix the base and the zeroing piece positioning fixture, and make a part of the outer side surface of the base completely fit the arc surface of the zeroing piece positioning fixture; (2) Zeroing the reference surface: Place the zeroing lens on the reference surface, and at the same time make the outer circle of the zeroing lens completely fit the arc surface of the zeroing piece positioning fixture. The radian of the zeroing lens is the same as the radian of the arc surface of the zeroing piece positioning fixture, and then adjust the light spot of the laser collimator to be at the zero position; (3) Sleeve the sleeve onto the positioning tube, then install the lens, and finally place the zeroing lens on the lens and fit it to the zeroing piece positioning fixture; (4) Read the distance between the light spot on the collimator and the zero position, and the parallelism value of the lens can be obtained.

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