Cam Grinding Based on Fuzzy Variable Step Cubic Spline Interpolation

Used fixed equal step cubic spline interplolation in non-circular machining, the influence of acceleration may be too strong to cause burns and vibration. To suppress the acceleration influence of feed axis, take cam grinding as an illustration, first derived acceleration and its change from the cubic spline function, then adopting the method of off-line fuzzy model logical reasoning combined with five points of three power smooth, obtained the modified variable interplolation time steps. The experiment results that the feed axis acceleration stability used fuzzy step cubic spline intepolationis is much better than equal step spline in cam grinding under the same processing efficiency.