Abstract: Considering machining efficiency, surface quality and wear of
cutter and machine, it is necessary to maintain high, stable and
constant surface feed rate as far as possible. The feed rate
control strategy for multi-axis CNC machining of free-form
surfaces is presented. It comprises;①the determination of
effective feed rate; ②the adoption of suitable approaches to
smooth feed rate. This strategy considers path geometry, actuator
limitation and machine dynamics. The result shows that machining
efficiency is improved effectively.
Key words: CNC
Surface machining Feed rate Multi-axis
*
This project
is supported by National Natural Science Foundation of China and the
Eight-Five Year Plan National Key Projects. Manuscript received on
October 9, 1999; revised manuscript March 27, 2000
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