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Optics Lens

Double infrared lens centering device developed on September 13, 2014

by:HENGXIANG     2020-11-16
Vertical double infrared lens centering edge grinding equipment, mainly used for large aperture infrared lens edge grinding, the center of the spherical lens to reduce the optical parts and optical center deviation error, improve the imaging quality of optical system. In recent years, more and more high to the requirement of infrared lens at the center of the error, many large aperture infrared lens center error requirement is greater than zero. 01 mm conventional centering method and edge grinding equipment can not meet the requirement of the infrared lens at the center of the error; Along with the development of infrared technology, infrared lens demand more and more widely used; To develop a new type of vertical double infrared lens centering edge grinding machine has high engineering application value. Large aperture infrared lens center deviation of the technical requirements of the infrared optical system, most of telescope system and close system. The technical requirements of basic infrared lens is carried out in accordance with the telescopic system technical requirements. The center of the lens deviation determined according to different purposes of numerical of the instrument. In the actual production, 80 ~ 200 ¢generally large aperture infrared lens at the center of the deviation of 0. 005-0. 05 mm structure design principle of machine tool structure, used the position relationship between spindle axis and ground to classify types. Axis vertical to the ground as the vertical; Horizontal flat behavior. In order to solve the weight of large aperture infrared lens centering precision, the effect of centering and improve efficiency and reduce labor intensity, this topic main shaft system adopts vertical structure, and the spindle center has a hole, the bottom right one can find adhesive autocollimation reflection as below. Spindle and parts of adhesive USES threaded coupling clamp, cone centering. Infrared lens is placed in the main shaft head, with propolis cement after centering. Each equipped with optical set at the bottom of the spindle axis, right parts used for bonding surface and the adhesive surface centering. Grinding wheel spindle system installed on a swing arm around a fixed axis rotation, under the action of a play Huang Li clingy feed control structure, grinding wheel grinding amount is controlled by the feed mechanism. Infrared material such as Eva, germanium, qualitative hard and brittle, edge grinding RongYang occur side damage phenomenon. And the grinding wheel feed movement mode is the main reason for the collapse edge. Different specifications of the grinding wheel with different amount of grinding. When grinding large size parts, if the large amount of feed, grinding wheel once no more, and then into a knife, although each time to some, but remain the state of overload grinding wheel, grinding wheel cannot fully play its role, prone to stick a knife and side damage phenomenon, affecting grinding effect if the feed quantity is too small, the grinding efficiency is low, cannot satisfy the production requirements. Thus infrared lens edge grinding machine grinding wheel feed system should satisfy the following functions: 1: has the function of automatic feeding, feeding size is adjustable. 2 wheel should have sufficient grinding time at work, with a 'laser scalpel' ( Fine grinding) Function. 3 wheel speed adjustable. In order to achieve the grinding wheel adjustable automatically feed and feeding, feed system consists of two parts, one is the crank rocker mechanism, secondly, the screw nut mechanism. Rocker arm swinging drive nut rotation, makes the control of screw expansion of the grinding wheel feed. Nut equipped with a ratchet pawl mechanism, make the grinding wheel in a rocker swing cycle only a feed, the intermittent feeding, making the grinding wheel has the function of 'laser scalpel'. The size of the feed can be adjusted by adjusting the length of the crank. Grinding wheel motor adopts frequency conversion control, speed adjustable. Parts chamfer is controlled by CAM. Outside diameter size precision of the edge grinding parts controlled by special micrometers, manual set. The development of the new type of vertical double infrared lens centering device, its purpose is to make up and solve horizontal double centering device when machining large diameter lens short board and the performance of functions, in order to meet the infrared industry demand for large diameter lens edge grinding equipment. The development of vertical double infrared lens centering device, a lot of ideas and design from the predecessors' ideas, ideas for the supplement, implementation and improvement of involving aspects are mainly vertical structure, main shaft precision, imaging and chamfering.
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