Modeling and simulation of high-speed milling centers dynamics

Abstract

High-speed machining is a milling operation in industrial production of aeronautic parts, molds, and dies. The parts production is being reduced because of the slowing down of the machining resulting from the tool path discontinuity machining strategy. In this article, we propose a simulation tool of the machine dynamic behavior, in complex parts machining. For doing this, analytic models have been developed expressing the cutting tool feed rate. Afterwards, a simulation method, based on numerical calculation tools, has been structured. In order to validate our approach, we have compared the simulation results with the experimental ones for the same examples.

Analytical curvature-continuous dual-Bézier corner transition for five-axis linear tool path

“…Usually, the linear tool path is connected by arcs and only the tangent continuity is guaranteed [26]. In this paper, we present an analytical transformation algorithm that simultaneously satisfies the requirements.…”

Influence of interpolation type in high-speed machining (HSM)

“…The real feed rate profile in HSM is variable, which indicates that several parameters must be put into evidence to optimize the machining of complex shapes. Hence, in order to make an optimal choice of a machining strategy, all we have to do is to analyze the different critical criteria [16].…”

Optimization of pocket machining strategy in HSM

“…The static look ahead define the machine dynamic behavior very well, but this calculation of the feed rate is done in hidden time for the current block without having any idea about the next block (old machines). The calculation algorithm of the modified static look ahead [6] is represented in the organization chart of Fig. 3.…”