A method for mounting and timing a lens by suction

Abstract

The application belongs to the field of optical processing, and discloses a lens adsorption installation dialing method, which comprises the following steps: (1) adsorbing the lens: placing the lens on the suction cup and starting adsorption, (2) centering: placing the probe ball head of the dial gauge close to the lens cylinder surface, adjusting the dial gauge value to zero, rotating the suction cup for one circle, observing the direction of the dial gauge pointer; if the pointer does not move, adjusting the dial gauge value, then rotating the suction cup for one circle, observing the direction of the dial gauge pointer; and continuously operating according to the direction of the dial gauge pointer. If the dial gauge pointer rotation exists over-range, adjusting until the dial gauge pointer rotation is not over-range; if the dial gauge pointer rotation does not exist over-range or after adjustment, the dial gauge pointer rotation is not over-range, setting the point position for fine adjustment until the target lens cylinder surface jump range is met. The application can realize fast positioning and clamping of the optical lens cylinder surface which is not circumferentially positioned during vacuum adsorption processing, stabilize centering, and improve production efficiency.

Description

Technical Field

[0001] This invention belongs to the field of optical processing and relates to a method for mounting and marking optical lenses by adsorption. More specifically, it relates to a method for mounting and marking optical lenses by vacuum adsorption. Background Technology

[0002] In the vacuum adsorption process of optical lenses, the clamping accuracy of the lenses is extremely high, and the clamping accuracy must be controlled within 2 to 3 micrometers. This requires a high level of dial indicator skills from the operators.

[0003] Because the lens is not circumferentially positioned during vacuum adsorption, it can only be roughly placed in the center of the vacuum suction cup. At this point, the lens is not circumferentially positioned and has a large circumferential deviation. It is necessary to use a dial indicator to tap and position the lens in the center of the machine tool to achieve circumferential positioning. However, the circumferential deviation of the lens is so large that it is very likely to exceed the range of the dial indicator, making dial indicator centering quite difficult. Summary of the Invention

[0004] To address the aforementioned problems in the existing technology, the present invention aims to provide a method for adsorption and mounting of lenses, which can reduce the circumferential deviation error of the lens and achieve optimal clamping accuracy.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A method for attaching and mounting lenses using an adhesive dial indicator includes the following steps:

[0007] (1) Adsorption of lens: Place the lens on the suction cup, turn on the adsorption, and fix the lens;

[0008] (2) Centering: Place the dial indicator probe ball close to the cylindrical surface of the lens, adjust the dial indicator value to zero, rotate the suction cup one revolution, and observe the direction of the dial indicator pointer; if the pointer does not move, adjust the dial indicator value to n1, n1 = 1~10μm, then rotate the suction cup one revolution and continue to observe the direction of the dial indicator pointer.

[0009] a. If the dial indicator pointer rotates beyond its range, select a position on the lens cylinder where the dial indicator pointer rotates beyond its range, and adjust the dial indicator pointer at that position to below the maximum range by n2, where n2 = 1~10μm. Then rotate the suction cup one full turn and observe the direction of the dial indicator pointer. If the dial indicator pointer continues to rotate beyond its range, repeat step a until the dial indicator pointer rotates no longer beyond its range.

[0010] b. If the dial indicator pointer does not exceed the range, or if the dial indicator pointer does not exceed the range after adjustment a, proceed with the following steps:

[0011] The settings are as follows: A and B are any two positions on the dial indicator, and C is the middle position between A and B. When the suction cup is rotated, the dial indicator pointer moves clockwise from B to A, and then counterclockwise from A to B.

[0012] When the above conditions are met, first rotate the suction cup to make the dial indicator pointer position A, then adjust the position of the lens cylinder so that the dial indicator pointer rotates counterclockwise to position C. Then rotate the suction cup one full circle and observe the direction of the dial indicator pointer. At this time, the pointer will swing back and forth within a range smaller than AB, that is, the adsorbed lens has met the lens cylinder runout requirement within the range of AB.

[0013] If the range of AB is greater than the cylindrical runout range of the target lens, repeat step b until the cylindrical runout range of the target lens is met.

[0014] Furthermore, the cylindrical runout range of the target lens is explained as follows: In actual industrial processes, if it is a blank lens, the cylindrical runout is controlled within 5~15 micrometers; if it is a finished lens, the cylindrical runout is controlled within 0~5 micrometers; if it is a repeated clamping, the cylindrical runout is controlled within 0~1 micrometers.

[0015] Furthermore, between step (1) adsorbing the lens and step (2) centering, there is also step (1-2) pre-centering: place the dial indicator probe ball at a distance L from the lens cylindrical surface, where L is 0~10mm, rotate the suction cup at least one revolution, and adjust the position of the lens cylindrical surface while rotating, so that the difference between the maximum and minimum values ​​of L is 0~2mm.

[0016] More preferably, L is 2~6mm.

[0017] More preferably, the position of the lens cylinder is adjusted by gently tapping it with a rubber or plastic hammer.

[0018] Furthermore, the lens is fixed by vacuum adsorption.

[0019] More preferably, in step (1), the suction force of the vacuum suction cup is 0.2~0.3 bar. Even more preferably, the suction force is 0~0.1 bar for lenses weighing 500 grams or more, and 0.2~0.5 bar for lenses weighing less than 500 grams.

[0020] More preferably, the method further includes step (3), after adjusting the suction force of the vacuum chuck to 0.9~1.5 bar, repeating step b until the target lens cylindrical runout range is met.

[0021] Further, in step (1), after the chuck is installed on the machine tool, the chuck mounting surface is ground until the plane runout of the chuck mounting surface is below 0.5μm.

[0022] Furthermore, n1 = 1~5 μm; n2 = 1~5 μm.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] (1) This application can quickly position and clamp the cylindrical surface of an optical lens that is not circumferentially positioned during vacuum adsorption processing, stabilize and center it, and improve production efficiency; at the same time, this application can also quickly perform secondary clamping and repair on lenses with processing abnormalities.

[0025] (2) This application can protect the dial indicator surface and the micrometer probe ball to the greatest extent during dial indicator operation.

[0026] (3) The dial indicator method of the present invention can achieve the optimal positioning error, that is, the processing error of the tooling and the lens itself. In specific use, the method of this application can reduce the circumferential deviation error of the lens to less than 5 micrometers, thereby achieving the optimal clamping accuracy.

[0027] (4) In this application, after the chuck is installed on the machine tool, the mounting surface of the chuck is ground until the runout of the mounting surface is less than 0.5 μm. Furthermore, the new chuck only needs to be ground once during its first use, and the ground chuck can be reused for a long time. Attached Figure Description

[0028] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0029] Figure 1 This is a schematic diagram of the pre-process of the present invention;

[0030] Figure 2 This is a schematic diagram of the centering process of the present invention;

[0031] Figure 3 This is a schematic diagram of step b in the centering process of the present invention. Detailed Implementation

[0032] To facilitate understanding of the present invention, the present invention will be described more fully and in detail below with reference to the accompanying drawings and preferred embodiments, but the scope of protection of the present invention is not limited to the following specific embodiments.

[0033] Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by those skilled in the art. The technical terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the scope of the invention.

[0034] Example 1

[0035] This embodiment discloses a method for vacuum adsorption mounting and dial indicator application of an optical lens. The optical lens in this embodiment is a blank lens, and the method includes the following steps:

[0036] (1) Adsorption of lens: After the suction cup is installed on the machine tool, the suction cup mounting surface is ground until the plane of the suction cup mounting surface runs to less than 0.5μm. The optical lens is placed on the vacuum suction cup and the vacuum adsorption is turned on. The suction force of the vacuum suction cup is 0.3bar.

[0037] (1-2) Pre-ordered heart: see Figure 1 Place the dial indicator probe ball at a distance L from the lens cylindrical surface, where L is 5mm. Rotate the suction cup one revolution and observe the change in L. Adjust the position of the lens cylindrical surface while rotating. The difference between the maximum and minimum values ​​of L should be 2~3mm.

[0038] (2) Settle down:

[0039] a. See also Figure 2 Place the dial indicator probe ball close to the cylindrical surface of the lens and loosen the dial indicator until the dial indicator reading is zero. Rotate the suction cup one full turn and observe that the dial indicator pointer does not move. Continue to tighten the dial indicator until the dial indicator reading is at the 3μm position. Rotate the suction cup one full turn and observe that the dial indicator pointer does not exceed the range.

[0040] b. See also Figure 3 Set three positions: A, B, and C. A and B are any two positions on the dial indicator, and C is the middle position between A and B. When rotating the suction cup, the dial indicator pointer moves clockwise from B to A, and then counterclockwise from A to B.

[0041] After meeting the above conditions, first rotate the suction cup to position the dial indicator pointer at position A. Then, use a rubber or plastic hammer to gently tap the lens cylinder to adjust its position, so that the dial indicator pointer rotates counterclockwise to position C. Then, rotate the suction cup one full circle and observe the direction of the dial indicator pointer. At this time, the pointer swings back and forth within a range smaller than AB. In this embodiment, the distance between AB is greater than 10μm. Continue to repeat step b until the dial indicator pointer jumps within 10μm.

[0042] (3) Turn on the 0.9 bar pressure adsorption lens, continue to rotate the suction cup, and observe the direction of the dial gauge pointer. At this time, after strengthening the adsorption, the swing exceeds 10 μm. Repeat step b in step (2) until the dial gauge pointer jumps between 10 μm.

[0043] (4) To carry out lens production and processing.

[0044] Example 2

[0045] This embodiment discloses a method for vacuum adsorption mounting and dial indicator application of an optical lens. The optical lens in this embodiment is a blank lens, and the method includes the following steps:

[0046] (1) Adsorption of lens: After the suction cup is installed on the machine tool, the suction cup mounting surface is ground until the plane of the suction cup mounting surface runs to less than 0.5μm. The optical lens is placed on the vacuum suction cup and the vacuum adsorption is turned on. The suction force of the vacuum suction cup is 0.3bar.

[0047] (1-2) Pre-ordered heart: see Figure 1 Place the dial indicator probe ball at a distance L from the lens cylindrical surface, where L is 5mm. Rotate the suction cup one revolution and observe the change in L. Adjust the position of the lens cylindrical surface while rotating. The difference between the maximum and minimum values ​​of L should be 2~3mm.

[0048] (2) Settle down:

[0049] a. See also Figure 2 Place the dial indicator probe ball close to the cylindrical surface of the lens and loosen the dial indicator until the dial indicator reading is zero. Rotate the suction cup one full turn and observe that the dial indicator pointer does not move. Continue to tighten the dial indicator until the dial indicator reading is at the 3μm position. Rotate the suction cup one full turn and observe that the dial indicator pointer does not exceed the range.

[0050] b. See also Figure 3 Set three positions: A, B, and C. A and B are any two positions on the dial indicator, and C is the middle position between A and B. When rotating the suction cup, the dial indicator pointer moves clockwise from B to A, and then counterclockwise from A to B.

[0051] After meeting the above conditions, rotate the suction cup one full circle and observe the dial indicator pointer swinging between two positions A and B on the circumferential direction of the dial indicator surface. The distance between A and B is 10 micrometers.

[0052] (3) Turn on the 0.9 bar pressure adsorption lens, continue to rotate the suction cup, and observe the direction of the dial gauge pointer. At this time, after strengthening the adsorption, the swing exceeds 10 μm. Repeat step b in step (2) according to the method of this application until the dial gauge pointer jumps between 10 μm.

[0053] (4) To carry out lens production and processing.

[0054] Example 3

[0055] This embodiment discloses a method for vacuum adsorption mounting and dial indicator application of an optical lens. The optical lens in this embodiment is a blank lens, and the method includes the following steps:

[0056] (1) Adsorption of lens: After the suction cup is installed on the machine tool, the suction cup mounting surface is ground until the plane of the suction cup mounting surface runs to less than 0.5μm. The optical lens is placed on the vacuum suction cup and the vacuum adsorption is turned on. The suction force of the vacuum suction cup is 0.3bar.

[0057] (1-2) Pre-ordered heart: seeFigure 1 Place the dial indicator probe ball at a distance L from the lens cylindrical surface, where L is 5mm. Rotate the suction cup one revolution and observe the change in L. Adjust the position of the lens cylindrical surface while rotating. The difference between the maximum and minimum values ​​of L should be 2~3mm.

[0058] (2) Settle down:

[0059] See Figure 2 Place the dial indicator probe ball close to the cylindrical surface of the lens and loosen the dial indicator until the dial indicator reading is zero. Rotate the suction cup one full turn and observe that the dial indicator pointer does not move. Then continue to tighten the dial indicator until the dial indicator reading is at the 3μm position, and then rotate the suction cup one full turn.

[0060] a. At this point, the dial indicator exceeds the range and stays at the maximum range for 1 second. At this point, adjust the position of the lens cylinder so that the dial indicator pointer is 2μm below the maximum range. Then rotate it one full turn. At this point, the dial indicator pointer is no longer exceeding the range.

[0061] b. See also Figure 3 Set three positions: A, B, and C. A and B are any two positions on the dial indicator, and C is the middle position between A and B. When rotating the suction cup, the dial indicator pointer moves clockwise from B to A, and then counterclockwise from A to B.

[0062] First, rotate the suction cup to position the dial indicator pointer at position A. Then, adjust the position of the lens cylinder so that the dial indicator pointer rotates counterclockwise to position C. After that, rotate the suction cup one full circle and observe the direction of the dial indicator pointer. At this time, the pointer will swing back and forth within a range smaller than AB. Continue to tap the dial indicator repeatedly until the dial indicator pointer jumps within 10 micrometers.

[0063] (3) Turn on the 0.9 bar pressure adsorption lens, continue to rotate the suction cup, and observe the direction of the dial indicator pointer. If the swing exceeds the expectation, repeat step b in step (2) until the dial indicator pointer jumps within 10 micrometers.

[0064] (4) To carry out lens production and processing.

[0065] The above are merely preferred embodiments of the present invention and are not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims

1. A method for mounting a lens by suction, characterized in that, The method comprises the following steps: (1) adsorbing the lens: placing the lens on the suction cup, turning on the adsorption, and fixing the lens; (2) centering: placing the probe ball head of the micrometer gauge close to the lens cylinder surface, adjusting the value of the micrometer gauge to zero, rotating the suction cup for one circle, and observing the direction of the micrometer gauge pointer; if the pointer does not move, adjusting the value of the micrometer gauge to n1, n1 = 1-10 μm, then rotating the suction cup for one circle, and continuing to observe the direction of the micrometer gauge pointer; a. if the micrometer gauge pointer rotation exists over-range, at this time, a lens cylinder surface position where the micrometer gauge pointer rotation over-range is selected, the position of the lens cylinder surface is adjusted, and the micrometer gauge pointer at the position is adjusted to below the maximum range n2, n2 = 1-10 μm, then rotating the suction cup for one circle, and observing the direction of the micrometer gauge pointer; if the micrometer gauge pointer rotation over-range continues to appear, the operation step a is repeated until the micrometer gauge pointer rotation is not over-range; b. if the micrometer gauge pointer rotation does not exist over-range or after the adjustment, the micrometer gauge pointer rotation is not over-range, the following operation is started: the conditions are set as follows: A and B are any two positions on the micrometer gauge dial, C is the middle position of A and B, the micrometer gauge dial pointer rotates clockwise from B to A, and then counterclockwise from A to B when the suction cup is rotated; when the above conditions are met, the suction cup is rotated, and whether the micrometer gauge pointer swings in the AB range is observed: if it does not swing in the AB range, the suction cup is first rotated to make the micrometer gauge pointer at the A position, then the position of the lens cylinder surface is adjusted to make the micrometer gauge pointer rotate counterclockwise to the C position, and then the suction cup is rotated for one circle to observe the direction of the micrometer gauge pointer; at this time, the pointer will swing back and forth in a range smaller than AB, that is, the adsorbed lens meets the lens cylinder surface jump requirement in the AB range; if the AB range is greater than the target lens cylinder surface jump range, step b is repeated until the target lens cylinder surface jump range is met.

2. The lens suction mounting and timing method according to claim 1, wherein, Between step (1) adsorbing the lens and step (2) centering, step (1-2) pre-centering is further included: the probe ball head of the micrometer gauge is placed at a position with a distance L from the lens cylinder surface, L is 0-10 mm, the suction cup is rotated for at least one circle, and the position of the lens cylinder surface is adjusted while rotating to make the maximum value and the minimum value of L differ by 0-2 mm.

3. The lens suction mounting and timing method according to claim 2, wherein L is 2-6 mm.

4. The method of claim 1-3, wherein, A rubber hammer or a plastic hammer is used to gently knock the lens cylinder surface to adjust the position of the lens cylinder surface.

5. The method of claim 1-3, wherein, The lens is fixed by using a vacuum suction cup.

6. The lens suction mounting and metering method of claim 5, wherein, In step (1), the suction force of the vacuum suction cup is 0-0.5 bar.

7. The lens suction mounting and metering method of claim 6, wherein, The suction force is 0-0.1 bar for a lens with a weight of 500 grams or more, and 0.2-0.5 bar for a lens with a weight of less than 500 grams.

8. The lens suction mounting and timing method according to claim 6 or 7, wherein, Step (3) is further included: the suction force of the vacuum suction cup is adjusted to 0.9-1.5 bar, step b is repeated until the target lens cylinder surface jump range is met.

9. The lens suction mounting and metering method of claim 1, wherein, In step (1), after the suction cup is installed on the machine tool, the installation surface of the suction cup is ground until the flatness jump of the installation surface of the suction cup is below 0.5 μm.

10. The lens suction mounting and metering method of claim 9, wherein, In step (2), n1 = 1-5 μm; n2 = 1-5 μm.

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