Research On Composite Grinder Design And Experiment For Small Aspheric Surface

In recent years,with the wide use of aspheric optical instrument in the field of military and civilian equipment,an increasing demand for small aspheric elements has appeared.At present,the technological procedure of manufacturing aspheric is finished by rough machining,precision machining as well as ultra-precision machining.However,as each process is finished by a special equipment,it makes the equipment money-consuming,and causes error in the elements clamping,it also increases machining time and lowers processing efficiency.By summarizing current situation of small aspheric processing equipment at home and abroad and processing small aspheric surface,the author rough and precision composite grinding carried out on one machine tool,which reduces the time of element’s clamping and improves processing efficiency.The main research work of this paper includes four aspects as follows,(1)According to the characteristics and usages of small aspheric composite grinder,and mainly based on aspheric surface,rough and precision composite grinding,the author analyzes the overall design of composite grinder of small aspheric surface and then designs machine tool’s overall structure.(2)To meet the demand of processing small aspheric surface,and based on the actual design process of the machine tool,the author designs,selects and analyzes the key structural components.(3)On the designed composite grinder for small aspheric,the author designs grinding experimental schemes.The author attempts to verify the capability of the machine tool’s machining by the experiments of flat surface grinding,aspheric surface grinding as well as the nearest sphere surface grinding.(4)By analyzing experimental results,the author gets access to the appropriate technology parameter of the part machining and verifies that the composite machine tool can be used for aspheric surface processing and it may improve grinding efficiency.