The invention relates to an implicit
voxel Boolean subtraction optimization method in five-axis
machining simulation. According to the method, an implicit tool geometric expression model based on a symbolic distance function is constructed, and a dynamic
voxel modeling technology with a
layered structure is combined, so that efficient
interactive modeling of a
material removal process between a tool and a workpiece is realized. The whole process of the method comprises four key stages of
spatial positioning, vertex interference detection, projection correction and grid reconstruction, and can cope with
geometric modeling challenges caused by continuous motion of a multi-degree-of-freedom and multi-attitude cutter. A dynamic block loading mechanism and a local state synchronization strategy are introduced, so that the real-
time response capability of Boolean subtraction operation under complex working conditions is effectively improved, and meanwhile, the continuity and integrity of
machining geometric boundaries are kept. The method has good expandability and robustness, obviously reduces space-
time complexity of calculation on the basis of keeping geometric surface continuity and topological
correctness, realizes
millisecond-level
response time in an experiment, and has a good application prospect. The method is widely applied to
virtual machining simulation and intelligent
process verification systems of complex free-form surface parts such as aero-engine blades and automobile structural parts.