The invention discloses a predicting method of a flexible
machining surface error of large disc mining cutter plane
cutting, and relates to the field of prediction of the
machining surface error. Thepredicting method comprises the following steps of building a single-step analysis standard finite
element model, extracting an analysis file, building a main circulation analysis step to obtain a node position and an initial value of a flexible main circulation
cutting force set, initializing a flexible main circulation finite
element analysis model file to determine instantaneous
cutting force of a subsidiary circulation cutting position, updating a subsidiary circulation finite
element analysis model file, conducting finite
element analysis, conducting flexible
machining error calculation,judging whether subsidiary circulation of the flexible machining error calculation is converged or not, judging whether the cutting process is finished or not and conducting surface machining error
point cloud processing to obtain a surface machining error cloud graph. By means of the method, after a large disc
milling cutter is machined, the whole surface flexible machining error form can be simulated, the plane milling machining error forming mechanism of the large disc
milling cutter is studied more comprehensively, and a prerequisite is provided for design of the
machining process and control
strategy development of the
machining process.