CN107478135B - Lens external diameter measurement jig - Google Patents

Abstract

The invention discloses a lens outer diameter measurement jig which comprises a sliding block, a guide pillar and a base; the sliding block is connected with the base through a guide post; the tail end of the guide post is fixedly connected with a knob through a cross screw and a baffle plate; the base is internally provided with a trapezoid cavity, and a copper gasket is accommodated in the trapezoid cavity; the tail end of the base is embedded with a pressing sleeve; the guide post penetrates through the pressing sleeve in the base, and the copper gasket is in threaded connection with the sliding block. The invention adopts the inclined plane structure, can measure lenses with different outer diameters, and has wide application range. The invention has the advantages of simple operation, time saving and efficiency improvement when the lens is measured. Therefore, the problem that a certain error is generated due to the difference of testing methods of different measuring personnel, so that the quality is misjudged is solved, and accurate and stable reference information is provided for the test personnel.

Description

A lens outer diameter measuring fixture

Technical field

The invention relates to the technical field of optical measurement, specifically a lens outer diameter measuring fixture.

Background technique

At present, micrometers are commonly used to measure the outer diameter of optical lenses. The lens is difficult to fix when measuring. It requires practitioners to be skilled in techniques and have certain measurement experience and testing feel. Due to personnel fluctuations or differences in measurement personnel, the size differences caused by measurement errors lead to errors in the measurement results. larger. Or the size difference is too large due to non-standard techniques during the testing process, which seriously affects the judgment direction of the technicians.

Contents of the invention

The object of the present invention is to provide a lens outer diameter measuring fixture that is simple to operate.

The technical solutions adopted to achieve the above goals are:

A lens outer diameter measuring fixture includes a slider, a guide post and a base; the slider is connected to the base through the guide post; a knob is fixed at the end of the guide post through a cross screw and a stopper;

There is a trapezoidal cavity inside the base, and copper gaskets are placed in the trapezoidal cavity; a press sleeve is embedded at the end of the base; the guide post penetrates the press sleeve in the base, and the copper gasket is screwed to the slider.

The beneficial effects of the present invention are:

1. The present invention adopts a bevel structure and can measure lenses with different outer diameters, and has a wide range of applications.

2. The invention is connected and easy to operate, saves time and improves efficiency when measuring lenses.

3. The outer diameter measuring fixture of the present invention can minimize human measurement errors.

4. The guide post of the present invention fixes the slider and the base to fix the lens to be measured, and uses a gravity-free height gauge to measure, with small errors and more accurate measurement results.

Description of the drawings

Figure 1 is an exploded view of the new measuring fixture.

Figure 2 is a cross-sectional view of the new measuring fixture.

Figure 3 is a structural diagram of the slider of the new measuring fixture.

Figure 4 is a structural diagram of the guide pillar of the new measuring fixture.

Figure 5 shows the base structure diagram of the new measuring fixture.

Figure 6 shows the press sleeve accessories of the new measuring fixture.

Figure 7 shows the copper gasket accessories of the new measuring fixture.

Figure 8 shows the knob accessories of the new measuring fixture.

Figure 9 is a diagram of the baffle accessories of the new measuring fixture.

Figure 10 is a schematic diagram of the measurement method of the new measuring fixture.

Specific implementation plan

The present invention will be further described in detail below with reference to the accompanying drawings and reference numerals.

As shown in Figure 1-10; a lens outer diameter measuring jig, including a slider 1, a guide post 2 and a base 3;

The slider 1 is connected to the base 3 through the guide post 2;

The end of the guide post 2 is fixed with a knob 6 through a cross screw 8 and a baffle 7;

The base 3 has a trapezoidal cavity inside, and a copper gasket 4 is placed in the trapezoidal cavity; a pressure sleeve 5 is embedded at the end of the base 3;

The guide post 2 passes through the pressing sleeve 5 and copper gasket 4 in the base 3 and is screwed to the slider 1.

The guide post 2 and the knob 6 are connected in a triangular or square clamping manner.

The end of the pressing sleeve 5 is provided with a convex edge.

The slider 1 and the base 3 are of inclined plane structure, and the measurement range is between 2-10MM.

The slider 1 and base 3 are machined from stainless steel to maintain excellent accuracy.

Example:

During the measurement process, the test tool uses a low measuring force height gauge to ensure the accuracy of the measurement data. During the test, the product is placed in the appropriate position according to the actual lens outer diameter drawing size. Based on the flat area of the base, reset the height gauge to zero and move it to two positions continuously to ensure that the ground is parallel and the data is consistent. Then, cut the products under test in sequence and place them vertically in the test area of the base with the cut edges aligned. For yourself, place it at an angle of 30-150° to the reference surface, without contact with the test reference surface, and finally measure and read the data.

Claims (3)

1. The utility model provides a lens external diameter measurement tool which characterized in that:

comprises a sliding block (1), a guide post (2) and a base (3);

the sliding block (1) is connected with the base (3) through the guide post (2);

the tail end of the guide post (2) is fixedly connected with a knob (6) through a cross screw (8) and a baffle (7);

a trapezoid cavity is formed in the base (3), and a copper gasket (4) is accommodated in the trapezoid cavity; the tail end of the base (3) is connected with a pressing sleeve (5) through threads;

the guide post (2) penetrates through a pressing sleeve (5) in the base (3) and the copper gasket (4) to be in threaded connection with the sliding block (1);

the sliding block (1) and the base (3) are of inclined structures, and the measuring range is 2-10 MM;

the guide post (2) is connected with the knob (6) in a triangular or square clamping mode.

2. The lens outer diameter measurement jig according to claim 1, wherein:

the tail end of the pressing sleeve (5) is provided with a convex edge.

3. The lens outer diameter measurement jig according to claim 1, wherein:

the sliding block (1) and the base (3) are machined by stainless steel, and excellent precision can be maintained.