Tool jig for detecting height of step surface of lens

Abstract

The utility model discloses a tooling jig for detecting the height of a step surface of a lens, which comprises a detection jig, a dial indicator and a reference lens, the middle of the detection jig is provided with a mounting groove, the bottom of the detection jig is provided with a reference surface, the dial indicator is connected with the detection jig, the end part of the dial indicator is provided with a gauge head, and the gauge head is connected with the reference lens. The gauge outfit extends into the mounting groove, and the reference lens is attached to the reference surface. According to the scheme, the step surface height of the lens can be rapidly and accurately detected.

Description

TECHNICAL FIELD

[0001] The utility model belongs to lens detection technical field, concretely relates to a kind of frock fixture of inspecting lens step surface height. BACKGROUND

[0002] The center thickness of existing optical parts lenses is generally measured by thickness gauge, and the accuracy of the thickness gauge depends entirely on the experience of the measurer, so the measurement results of different operators have large errors. When measuring the center thickness of a double-concave lens, the center thickness of one lens is first measured, and then the arc height of the other lens is measured, and the center thickness of the lens is obtained by subtracting the two values. When measuring a concave-convex lens, the thickness is measured from the concave surface. However, even when the concave surface is measured, the convex surface is still difficult to completely avoid surface damage when placed flat on the desktop. The measurement process completely relies on manual operation, and manual measurement not only has the problem of inaccurate center finding, but also has the problem of low measurement efficiency.

[0003] A Chinese patent with application number 2024100782290 discloses an online one-time measurement of full-size device for spherical lenses, which includes a lens detection sensing unit, a lens clamping assembly, and a display. The lens detection sensing unit is installed on the opposite sides of the upper and lower sides of the lens to be detected. The lens to be detected is clamped on the lens clamping assembly. The display is electrically connected to the lens detection sensing unit and the lens clamping assembly. The lens detection sensing unit includes multiple detection probes and a probe slide assembly. The device can be used to measure double-convex spherical, double-concave spherical, concave-convex spherical mirrors, single-concave spherical mirrors, and plane mirror optical elements.

[0004] The above-mentioned scheme can measure multiple dimensions in a single-concave spherical mirror lens, but still cannot measure the dimensions of the step surface of the single-concave spherical mirror lens. The dimensions D of the step surface of the single-concave spherical mirror lens are as shown in Figure 4 Due to the fact that the single-concave spherical mirror lens cannot be placed stably on the platform, accurate reading cannot be achieved. UTILITY MODEL CONTENTS

[0005] To solve the above problems, the utility model provides a frock fixture for inspecting the height of the step surface of a lens, which includes a detection fixture, a dial gauge, and a reference lens. The detection fixture has a mounting groove in the middle. The bottom of the detection fixture has a reference surface. The dial gauge is connected to the detection fixture. The end of the dial gauge has a dial head that extends into the mounting groove. The reference lens is attached to the reference surface.

[0006] Preferably, the bottom of the detection fixture has a positioning groove on the reference surface.

[0007] Preferably, the bottom of the detection jig is provided with an automatic limiting mechanism, the automatic limiting mechanism comprises limiting grooves located at both sides of the bottom of the detection jig, springs are arranged in the limiting grooves, and the bottom of each spring is connected with an L-shaped limiting block.

[0008] Preferably, a guide block is arranged in the mounting groove, and a guide hole is arranged in the middle of the guide block.

[0009] Preferably, the surface of the dial head is provided with a ceramic coating.

[0010] The utility model discloses the advantages are:

[0011] 1. The combination of the reference lens, the detection jig and the dial indicator enables the lens to be measured stably, and overcomes the problem that single concave lenses are difficult to place.

[0012] 2. The mounting groove of the utility model is provided with a guide block, a guide hole is arranged in the middle of the guide block, and the dial head passes through the guide hole of the guide block when extending downward. The dial head is guided through the guide hole, and shaking or lateral deviation in the measurement process is avoided, and the stability and repeatability of the overall measurement are further improved.

[0013] 3. The surface of the dial head of the utility model is provided with a ceramic coating. The ceramic coating can significantly improve the wear resistance and corrosion resistance of the dial head, and reduce the friction coefficient, so that the stability and accuracy of the dial head when contacting the lens in the measurement process are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a zero state structure diagram of the dial indicator.

[0015] Figure 2 It is a measurement state structure diagram of the dial indicator.

[0016] Figure 3 It is a detection jig structure diagram in the embodiment 2 of the utility model.

[0017] Figure 4 It is a measured lens step surface structure diagram.

[0018] In the drawing: 1 is a detection jig, 2 is a dial indicator, 3 is a reference lens, 4 is a mounting groove, 5 is a reference surface, 6 is a dial head, 7 is a positioning groove, 8 is a limiting groove, 9 is a spring, 10 is a limiting block, 11 is a guide block, and 12 is a guide hole. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings of the embodiments of the utility model.

[0020] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Simultaneously, when an component is referred to as "fixed to" or "equipped on" another component, it can be directly on the other component or may have an intervening component present. When an component is referred to as "connected to" another component, it can be directly connected to the other component or may have an intervening component present. When an component is referred to as "fixedly connected to" another component, it can be a common fixed connection method such as welding, bolting, or gluing. In short, those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Example 1, as Figures 1-2 As shown, a fixture for inspecting the step height of a lens includes a testing fixture 1, a dial indicator 2, and a reference lens 3. The testing fixture 1 has an inverted T-shaped cross-section, which provides better stability and reduces shaking or deviation during measurement. A mounting groove 4 is provided in the middle of the testing fixture 1, and a reference surface 5 is provided at the bottom of the testing fixture 1. The dial indicator 2 is connected to the testing fixture 1, and a meter head 6 is provided at the end of the dial indicator 2, extending into the mounting groove 4. The reference lens 3 is attached to the reference surface 5.

[0023] During testing, the testing fixture 1 and dial indicator 2 must first be installed, and the reference lens 3 should be installed as follows: Figure 1 Attach the dial indicator 2 to the reference surface 5 at the bottom of the testing fixture 1, then extend or retract the dial indicator 2 until it is at the same horizontal level as the reference surface 5 at the bottom of the testing fixture 1, and zero the dial indicator 2. Remove the reference lens 3, and place the lens to be tested as follows: Figure 2 The dial indicator 2 is placed close to the surface of the tooling fixture, and its position is finely adjusted so that the dial indicator 6 is at the lowest point of the lens. At this point, the reading of the dial indicator 2 is the dimension of the stepped surface of the lens. This solution, through the combination of the reference lens 3, the testing fixture 1, and the dial indicator 2, enables stable measurement of the lens and overcomes the difficulty of placing a single concave lens.

[0024] The bottom of the detection jig 1 is provided with a positioning groove 7 on the reference surface 5, the positioning groove 7 is a circular structure, when placing the measured lens, as shown, the measured lens can be quickly positioned by the circumferential groove of the measured lens and the positioning groove 7, the measured lens can be closely combined with the positioning groove 7 of the detection jig 1, so that it remains stable, prevents tilting or sliding during measurement, can realize automatic centering, rapid positioning, reduces human intervention, and improves detection speed.

[0025] The mounting groove 4 is provided with a guide block 11, the middle of the guide block 11 is provided with a guide hole 12, and the surface head 6 passes through the guide hole 12 of the guide block 11 when extending downward. The design of the guide block 11 makes the surface head 6 move along the fixed center line, ensures the perpendicularity and positioning accuracy, thereby reducing the measurement error caused by deviation. The surface head 6 is guided through the guide hole 12, and the shaking or lateral deviation in the measurement process is also avoided, further improving the stability and repeatability of the overall measurement.

[0026] In the scheme, the surface of the surface head 6 is provided with a ceramic coating, and the ceramic coating can significantly improve the wear resistance and corrosion resistance of the surface head 6, while reducing the friction coefficient, so as to ensure the stability and accuracy of the surface head 6 when contacting the lens in the measurement process, prolong the service life of the equipment, and improve the overall measurement accuracy and repeatability.

[0027] Embodiment 2, in combination Figure 3 The bottom of the detection jig 1 is provided with an automatic limiting mechanism, the automatic limiting mechanism includes limiting grooves 8 located at both sides of the bottom of the detection jig 1, springs 9 are arranged in the limiting grooves 8, and the bottoms of the springs 9 are connected with L-shaped limiting blocks 10. When placing the reference lens 3, the limiting block 10 is pulled down, and after placing the reference lens 3, the limiting block 10 can limit and fix the reference lens 3. By using the springs 9 and the L-shaped limiting blocks 10 in the limiting grooves 8, the automatic positioning and fixing of the reference lens 3 are realized, so as to ensure the stability and accurate positioning of the lens in the measurement process, and the detection accuracy and repeatability are greatly improved.

[0028] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A tooling jig for inspecting the height of a lens step surface, characterized by: The utility model relates to a kind of lens detection device, including detection jig (1), dial gauge (2) and reference lens (3), the middle of the detection jig (1) is equipped with installation groove (4), the bottom of the detection jig (1) is equipped with reference surface (5), the dial gauge (2) is connected with detection jig (1), the end of the dial gauge (2) is equipped with table head (6), the table head (6) extends into installation groove (4), the reference lens (3) is attached on reference surface (5), the bottom of the detection jig (1) is equipped with positioning groove (7) on reference surface (5), the bottom of the detection jig (1) is equipped with automatic limiting mechanism, the automatic limiting mechanism includes the limiting groove (8) in the bottom of the detection jig (1) two sides, the limiting groove (8) is equipped with spring (9), the bottom of the spring (9) is connected with the limiting block (10) with the section of L shape, the surface of the table head (6) is equipped with ceramic coating.

2. The tooling fixture for inspecting the step height of a lens according to claim 1, wherein: The installation groove (4) is equipped with guide block (11), the middle of the guide block (11) is equipped with guide hole (12).

Images