A real-time cubic parametric curve interpolations for CNC systems

Author

Li, Jiangang ; Zhou, Lei ; Zhang, Tinghua ; Li, Zexiang

Author_Institution

Shenzhen Grad. Sch., Harbin Inst. of Technol., Shenzhen

fYear

2008

fDate

25-27 June 2008

Firstpage

432

Lastpage

437

Abstract

Parametric interpolation has many advantages over linear interpolation in machining parts. This paper proposes a real-time look-ahead algorithm for tool path which has been modified to line segments and spline curve segments by segments arrangement and spline fitting. By applying the whole interpolation algorithm, the feedrate would be changed according to the characteristic of the tool path and the capability of the machine tool. Simulation results indicate that the developed parametric interpolation can reach a satisfying result.

Keywords

computerised numerical control; curve fitting; interpolation; machine tools; machining; splines (mathematics); CNC system; line segment; look-ahead algorithm; machine tool; machining; real-time cubic parametric curve interpolation; spline curve segment; spline fitting; tool path; CADCAM; Computer aided manufacturing; Computer numerical control; Curve fitting; Intelligent control; Interpolation; Machine tools; Machining; Real time systems; Spline; interpolator; look-ahead; segments arrangement; spline interpolation fitting; velocity profile;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Control and Automation, 2008. WCICA 2008. 7th World Congress on

Conference_Location

Chongqing

Print_ISBN

978-1-4244-2113-8

Electronic_ISBN

978-1-4244-2114-5

Type

conf

DOI

10.1109/WCICA.2008.4592963

Filename

4592963