Simulation of the behaviour of CNC machine-tools in three-axis milling of sculptured surfaces. (25th October 2010)

• Record Type: Journal Article
• Authors: Pessoles, Xavier; Landon, Yann; Mousseigne, Michel; Rubio, Walter
• Is Part Of: International journal of machining and machinability of materials. Volume 8:Number 3/4(2010)
• Page Start: 326
• Page End: 338
• Publication Date: 2010-10-25
• Subjects: high speed machining -- HSM -- sculptured surfaces -- CNC machining -- machine tool dynamics -- simulation -- three-axis milling -- feed rate -- trapezoidal acceleration -- modelling -- turbine blades; Machining -- Periodicals; Metals -- Machinability -- Periodicals; 671.35
• Languages: English
• ISSNs: 1748-5711

Abstract

Three-axis high-speed machining (HSM) of sculptured surfaces is currently programmed with linear or B-spline interpolation using CAM software. In both cases, due to axis dynamic limits of the CNC machine-tools, the desired feed rate is rarely reached, leading to lower productivity and impaired quality. In order to allow an optimisation of the process, a simulator is proposed in this paper. Changes in position, velocity, acceleration and jerk of each axis during three-axis HSM operations are modelled, based on a trapezoidal acceleration scheme. The relative speed between tool and workpiece is then computed for linear segments as for B-spline paths. Transitions between segments are also simulated. The three-axis simulator is experimentally validated through machining of a turbine blade.