关键词: 有限脉冲响应, 轮廓误差, 插补, 振动, 机床, 加工

Abstract: In the processing of short segments,high order spline curve could be used for interpolation to smooth the corner,the machine tool was realize continuous and uninterrupted feeding movement at the corner of the processing path,but the corner contour error could not be precisely controlled.To solve this problem,an accurate interpolation algorithm for corner contour error based on Finite Impulse Response (FIR) filtering was conducted.FIR filter was used to filter the velocity and acceleration three times to generate smooth high-order motion trajectory.By adjusting the overlap time of the feed pulses,the contour error was precisely controlled.Compared with the experiment of point-to-point interpolation algorithm,the machining time was reduced by 8.4%,the processing efficiency and the processing quality were improved,and the tool vibration was small during the whole process.

Key words: finite impulse response, contour error, interpolation, vibration, machine tool, machining