Discretizors and interpolators for five-axis CNC machines

Authors
Citation
R. Sarma et A. Rao, Discretizors and interpolators for five-axis CNC machines, J MANUF SCI, 122(1), 2000, pp. 191-197
Citations number
23
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Mechanical Engineering
Journal title
JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING-TRANSACTIONS OF THE ASME
ISSN journal
1087-1357 → ACNP
Volume
122
Issue
1
Year of publication
2000
Pages
191 - 197
Database
ISI
SICI code
1087-1357(200002)122:1<191:DAIFFC>2.0.ZU;2-F
Abstract
Discretization and interpolation of curves are two frequently adopted pract ices when machining complex curves using computer numerically controlled (C NC) machines. Both practices stem from the need to sample curves at discret e time intervals corresponding to the sampling period of the CNC machine. T his paper proposes new techniques for discretization and interpolation that account for the change of tool orientations in five-axis machining. First, the method for discretization proposed in this paper is based on sampling the curves such that specified contour, feedrate, and orientation errors ar e not exceeded. Second, the interpolator proposed in this paper will be abl e to avoid excessive angular speeds arising from sampling the curves based on the feedrate alone.