In the processing of aerospace structural parts

in addition to the feed velocity

the feed acceleration and jerk also have an important influence on the processing time. Taking the fnishing process of the S–shaped fllet of the S–shaped test piece as an example

 the influence of the feed velocity

 acceleration and jerk on the processing time was studied using the Kede GNC61 CNC system. The possible effects of increasing velocity

 acceleration and jerk on machine tool errors and S–shaped machining errors are analyzed. The results show that the increase of velocity

 acceleration and jerk effectively reduces the processing time of S–shaped fllet. The feed velocity is increased from 1000mm/min to 5000mm/min

the acceleration is increased from 0.1m/s2 to 1.0m/s2

the acceleration establishment time is shortened from 200ms to 20ms

 and the processing time of the S–shaped fllet is shortened by 24.20% 

 25.38% and 41.84%. The problems caused by increasing speed

 acceleration and jerk are increased setpoints bandwidth and increased excitation components. This makes it more diffcult to control the tracking error and trajectory error of the machine tool

 and it is easy to excite the vibration of the machine tool mechanical structure.