Real-time Corner Smoothing Based on FIR Filtering for CNC Machine Tools
Journal
Proceedings of the 3rd IEEE Eurasia Conference on IOT, Communication and Engineering 2021, ECICE 2021
Pages
639-644
Date Issued
2021
Author(s)
Abstract
This paper proposes a novel corner smoothing method with a Finite Impulse Response (FIR) filtering algorithm to generate a smooth trajectory for CNC machine tools. Basic point-to-point (P2P) interpolation for linear toolpath causes motion stops at each corner and excites structure vibration. Instead of inserting blending spline curves and solving feedrate planning between linear segments, non-stop feed motion is achieved in real-time by using the approach. Based on kinematic equations and pulse commands of motion axes, the length of FIR filtering is determined to respect corner tolerance and kinematic constraints of the drives simultaneously. Rather than adding the dwell time in filter-based feedrate planning, two-axis motion is realized by evaluating corner speed and matching the same length of FIR filters. Simulation studies and experiments results are provided to validate the effectiveness of the presented technique and improve cycle time and contouring performance. ? 2021 IEEE.
Subjects
corner smoothing
FIR filtering
kinematic constraints
machine tool
real-time
Blending
Computer control systems
Impulse response
Interpolation
Kinematics
Machine tools
CNC machine tools
Corner smoothing
Feedrate
Filtering algorithm
Finite impulse response filtering
Kinematic constraints
Real- time
Smooth trajectories
Smoothing methods
Toolpaths
FIR filters
Type
conference paper