Jerk decision for free-form surface effects in multi-axis synchronization manufacturing
Five-axis CNC tool machines have been widely used in the aerospace and automotive industries for complex and special-purpose mold production as smart machines. Obtaining good surface quality and manufacturing speed for the designed parts is always a challenging issue in a high-speed machining process. Researchers have provided several algorithms to smooth the trajectory profile or servo controller design to get good product quality. For the multi-axis synchronous motion, only a few researchers have discussed the interaction between the machine’s dynamic ability and tool path/trajectory generation. To ensure synchronous motion, the dynamic performance of each axis becomes a constraint for the frequency of the designed trajectory command. According to this requirement, a maximum jerk value in the trajectory generator could be calculated first, and then, combined with the machining method selected for the parts. A novel jerk value decision-making process is proposed for the parts machining process in this study. This new approach to obtain a better finished surface quality and shorten the machining time without adding supplemental equipment or information is demonstrated experimentally on a five-axis CNC machine for a free-form vane that could help machining operators take maximum advantage of the smart production techniques.
KeywordsJerk Trajectory Feed driver Five-axis machine tool Synchronous motion Free-form mold
- 23.Sencer B, Shamoto E (2012) The effect of jerk parameter of the reference motion trajectory on the oscillatory behavior of feed drive systems. Proc of JSPE Spring Conference. https://doi.org/10.11522/pscjspe.2012S.0.261.0
- 26.HEIDENHAIN Technical manual iTNC 530 (2013) HEIDENHAIN, GermanyGoogle Scholar
- 27.Lambrechts P (2003) Trajectory planning and feedforward design for electromechanical motion systems: version 2. DCT rapporten. http://www.dct.tue.nl/New/Lambrechts/DCT_2003_18.pdf