The continuous short line segment processing method in CNC machining has the defect of frequent fluctuation feedrate, which affects quality and efficiency. For this problem, local global methods are common solutions. is to insert transition curves at corners obtain a smooth toolpath, but does not essentially reduce number accelerations decelerations, it difficult between tiny straight sections....

STEP-NC (ISO 14649) is becoming a promising standard to replace or supplement the conventional G-code programs based on ISO 6983 due to its feature based machine independent characteristics and its centric role to enable efficient CAD/CAM/CNC interoperability. The re-use of Gcode programs is important for both manufacturing and capitalization of machining knowledge, nevertheless the conversion ...

Directed Metal Deposition (DMD) is a promising metal additive manufacturing technology, where parts are manufactured by fusing injected powder particles with laser beam moving along predefined trajectory. A toolpath typically includes sections as curves or edges, machine axes need to decelerate and accelerate accordingly. As result, the locally applied energy density vary during deposition proc...

Within the context of 5-axis free-form machining, CAM software offers various ways of toolpath generation, depending on the geometry of the surface to be machined. Therefore, as the manufactured surface quality results from the choice of the machining strategy and machining parameters, the prediction of surface roughness in function of the machining conditions is an important issue in 5-axis ma...