The invention relates to a space-time regulation and control
grinding and
polishing method and device for an anisotropic thin-wall curved-surface workpiece, and belongs to the field of ultra-precision
polishing. The method comprises the steps that the anisotropic thin-wall curved-surface workpiece is fixed to a multi-axis
parallel motion platform; based on the
machining postures of the flexible
machining tool at all the
machining points and the machining
crystal face of the anisotropic thin-wall curved surface workpiece, the space displacement regulation and control amount and the
material removal rate of the flexible machining tool at the machining points are calculated;
deconvolution is carried out on the basis of the
material removal rate and the target removal volume to calculate the
residence time of the flexible machining tool at the corresponding machining point; the flexible machining tool is regulated and controlled on the basis of the space displacement regulation and control amount and the
residence time of the flexible machining tool, the removal difference of the anisotropic thin-wall curved surface workpiece under different machining postures and machining
crystal faces is adaptively eliminated, high-precision controllable
grinding and
polishing are achieved, the uniform
material removal rate is guaranteed, controllable material removal is achieved, and the machining precision of the anisotropic thin-wall curved surface workpiece is improved. The workpiece is fixed in a mode of only constraining the boundary, so that stress deformation generated after the workpiece is separated from the tool is avoided.