Method and system for optimal control of ultra-precision cutting

A system for optimal control of ultra-precision cutting, comprising:

• an LSW model establishing module, configured to determine types of precipitates of machined materials, and establish an LSW model of each precipitate, wherein the LSW model represents a relationship between sizes of the precipitates, a heating temperature and heating time;
• a comprehensive temperature range determining module, configured to determine a temperature range corresponding to each precipitate according to the LSW model to obtain a comprehensive temperature range;
• a relation model establishing module, configured to establish a relation model between cutting parameters and a cutting temperature according to the LSW model, wherein the relation model establishing module comprises:
• a cutting time prediction model establishing submodule, configured to establishing a cutting time prediction model, wherein the cutting time prediction model is:
• t=30·(A COS((L−aep)/L)+A COS(√{square root over (L2−f2/4)}/L))/(π·S)
• wherein L is a gyration radius of a culter, f is a feeding speed, S is a spindle speed and aep is a cutting depth;
• a cutting time prediction submodule, configured to determine cutting time corresponding to different cutting parameters according to the cutting time prediction model;
• a strengthening phase size acquisition module, configured to acquire sizes of strengthening phases corresponding to different cutting parameters by using an energy spectrometer;
• a relation model establishing submodule, configured to establish a relation diagram of the sizes of the strengthening phases of the machines materials, the cutting parameters an the cutting time according to the cutting parameters, the sizes of the strengthening phases corresponding to the cutting parameters and the cutting time corresponding to the cutting parameters;
• and
• a relation model establishing submodule, configured to establish a relation model between cutting parameters and cutting temperature according to the LSW model and the relation diagram;
• a cutting parameter optimization module, configured to optimize the cutting parameters according to the comprehensive temperature range and the relation model;
• and
• an output module, configured to output optimized cutting parameters;
• wherein in a process of ultra-precision cutting, a cutter is controlled according to the optimized cutting parameters so that the cutting temperature is beyond the comprehensive temperature range to inhibit the generation of the precipitates.