Variational Analysis for CNC Milling Process

Design and experimental validation of a small-scale prototype selective laser sintering system

“…In this research, the minimum step ( Δl ) in X and Y directions is equal to 0.003 mm [19]. Equation (1) used to calculate the forward and side step of the threaded bar-nut of the gantry system in X and Y directions [3]. For this work, the motor step angle s was equal to 1.8°/step, and the threaded bar pitch PB was equal to 0.635 mm where PB is pitch (mm/rev), θ s is step angle o/step, and i is the gear ratio.…”

“…By scanning the laser across a powder bed, the resulting 3D part built layer by layer. The laser tool path is designed using a CAD program with a slicing algorithm and machine-specific tool path [3][4][5][6][7]. One important use of SLS is for applications requiring few parts with high quality and low costs, such as medical, submarine, and aerospace components.…”

“…Moreover, it is considered a fast technique to provide parts. The advantages of using rapid manufacturing are reduced manufacturing time, manufacturing without tooling and fixtures, producing a part with different materials, and supplying the 3D part (simple or complex) [3].…”

“…Afkhamifar et al worked on the analysis multi-axes automation system. Finite element analysis used to check the automation system and to predict a manufacturing error during running the system [3]. Sarhan et al [8] studied a gantry system of an automation system.…”

Effects of Depth of Cut on Cylindrical Milling Process in Steel Casting: A Numerical Study

“…These investigations have analyzed factors such as dimensional and geometrical defects since they seriously affect the quality of chip removal processes on CNC machines. To avoid these defects, the position error of the tool tip is predicted using finite elements (2). Another application of finite elements was used to identify the influence of thermoelastic deformations of the workpiece during the milling process (3).…”