Study On The Preparation Of Diamond Tools And The Machining Technology Of Aspheric Surface

With the development of modern science and technology,the aspheric surface with good optical properties is more and more widely used.Therefore,how to achieve high precision aspheric surface machining has become a hot spot.Because of the low critical cutting depth of the hard and brittle materials,the method of micro fracture removal can reduce the surface quality of the aspheric surface.Therefore,in the machining of the optical components,often used in Ultra precision CNC machine tools and online testing equipment.Due to the lack of professional equipment and professional personnel,it is difficult to machine high-precision aspheric surface.The development of the CAD/CAM software provides the possibility of machining aspheric surface in civil field.However,in the process of machining,the loss of diamond and the subsequent error compensation are lack of theoretical guidance,which restricts the development of this technology.Therefore,in the research of this subject,the aspheric surface is processed quickly through the civil numerical control machine tool and the CAD/CAM software.In view of the problems existing in the process of machining,the following aspects are studied in this research.In order to solve the problem of diamond falling off of electroplated diamond tools in the market,a fine grain brazed diamond milling cutter was prepared in this paper.Based on the research of the research group,in the research of this subject,the fine grain brazed diamond tools were prepared by electroplating brazing composite process.By optimizing the plating process parameters in milling tool,fine-grained diamond uniformity distribution problem has been solved.Through the exploration of brazing process,such as brazing layer thickness,heating current,heating time and so on,the brazed diamond tools with high precision were prepared The final diamond shedding problem was solved in the process of machining.Secondly,the removal characteristics of K9 optical glass were studied,and the influence of different process parameters on the material removal rate was analyzedby the removal experiment.Through the orthogonal experiment of three factors and four levels of K9 optical glass plane milling processing,analyzes the influence of cutting depth,spindle speed and feed rate on the surface roughness and subsurface damage,determined the best process parameters of milling parameters,provide the basis for experimental aspheric machining.Using the electroplated diamond tools produced by the market and the brazed diamond tools in this paper,the aspheric surface processing of the K9 optical glass is finished.The compensation experiment was carried out from changing the shape of the cutter and changing the milling speed.Compensation after machining aspheric surface machining accuracy compared with the original results are obviously improved.