A new CNC turning canned cycle for revolved parts with free-form profile

Abstract

This paper presents an algorithm for improving the interpolation accuracy in turning operations. The parts considered are formed by revolving a free-form profile which is implemented in terms of Bézier formulation around a center linear axis. The demand for the manufacturing of such geometric shapes is frequently met in parts produced by casting and forging methods. The method employs a computer numerical control (CNC) turning machine and is based on the locus tracing concept. The algorithm described utilizes a real-time CNC interpolator providing the highest possible accuracy of which the turning machine is capable. The whole machining task can be programmed as a canned cycle, essentially extending the feature generating capabilities of the existing G70/ G73 CNC turning fixed cycles.

A CNC Manufacturing Method for Parts with Trochoidal Profile

“…The generation of an accurate motion along the offset of the trochoid curves is treated as a locus tracing problem. The concept is generally applicable in motion generation and has already been tested successfully in similar problems of CNC machining [9][10][11][12]. In this paper, its application is illustrated in the context of motion generation along the offset of a trochoid.…”

Creation of cross-platform toolkit and methods of programming trusted CNC systems

“…The creation of canned cycles in a trusted CNC system must be a flexible and scalable process so that they can be customized and adapted to specific requirements and production conditions [9][10][11][12]. An existing alternative to the proposed approach -macroprogramming in high-level languages of the corresponding CNC systems -allows you to create custom cycles using the required set of program variables [13,14].…”