微米尺度, 中间尺度, 公差, 精度, 曲线拟合

The existing tolerance value table is imperfect, resulting in a range of issues such as batch production, surface quality and machining accuracy in designing and processing microminiature parts. For solving such problems,a concept of relative accuracy factor was put forward to study the scope of micro-scale and meso-scale on analysis of the existing standard tolerance value table. The corresponding standard tolerance values in this scale can be obtained based on MATLAB curve fitting method, which established the mathematical model of the relative accuracy factor and the size of the geometrical mean value. These values provide some references for improving the existing tolerance value table.

micro-scale, meso-scale, tolerance, accuracy, curve fitting