Lens trimming and positioning device

Abstract

The invention discloses a lens trimming and positioning device which comprises a clamping unit and a fixing unit. The clamping unit is used for clamping a workpiece and the fixing unit is movably connected to the clamping unit. At least one plane of the clamping unit is in face-to-face contact to the fixing unit. The fixing unit comprises a mounting base and a compressing assembly, and the compressing assembly is arranged on the mounting base; the compressing assembly comprises a first compressing block and a second compressing block, and the clamping unit is in contact with the first compressing block and the second compressing block. The clamping unit comprises a mounting base body and a fixing block, the mounting base body is movably arranged on the fixing unit, and the fixing block isarranged on the mounting base body; and an accommodating cavity for accommodating the workpiece is formed in the fixing block. In this way, in a process of trimming for many times, the reference surfaces of trimming are consistent as a result of face-to-face contact of the clamping unit and the fixing unit, so that the lens trimming and positioning device is suitable for lens workpieces of any shape and is wide in application range, and therefore, the multiple trimming processing precision can be improved effectively.

Description

technical field [0001] The invention relates to the technical field of lens processing, in particular to a lens trimming positioning device. Background technique [0002] Generally, for the optical processing technology of lens edge trimming, bonding wax is usually used to bond the lens and graphite into one for single-grain processing; or multiple lenses are bonded to graphite or other materials with wax or pitch, and then bonded On a large plate, the edge trimming process is carried out, and finally the lens workpiece is removed from the plate and cleaned. [0003] The traditional lens edge trimming device, whether it is a single bonding or a disc bonding, generally cannot be trimmed and formed at one time, and requires multiple reworks. It is difficult to ensure that the accuracy of each trimming is consistent during the multiple trimming process . Especially round or elliptical lenses with curved surfaces, because the lenses with curved surfaces are often in point-to-s...

AI Technical Summary

Problems solved by technology

[0003] The traditional lens edge trimming device, whether it is a single bonding or a disc bonding, generally cannot be trimmed and formed at one time, and requires multiple reworks. It is difficult to ensure that the accuracy of each trimming is consistent during the multiple trimming process

Especially round or elliptical lenses with curved surfaces, because the lenses with curved surfaces are often in point-to-surface contact when bonding, the size error of the edge trimming using the traditional lens trimming device is relatively large, which reduces the risk of lens trimming. edge precision

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