A New Algorithm for the Numerical Simulation of Machined Surface Topography in Mutiaxis Ball-End Milling  

Oleh:

Gang, Tan ; Min, Wan ; Tong, Gao ; Bassir, David Hicham

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Journal of Manufacturing Science and Engineering vol. 130 no. 1 (Feb. 2008), page 1-11.
Topik: Ball-End Milling; Surface Topography; Simulation Algorithm; Sculptured Surface

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ93.11 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

In milling process, surface topography is a significant factor that affects directly the surface integrity and constitues a supplement to the form error associated with the workpiece deformation. Based on the tool machining paths and the trajectory equation of the cutting edge relative to the workpiece, a new and general iterative algorithm is developed here for the numerical simulation of the machined surface topography in multiaxis ball-end milling. The influences of machining parameters such as the milling modes, cutter runout, cutter inclination direction, and inclination angle upon the topography and surface roughness values are studied in detail. Compared with existing methods, the basic advantages and novelties of the proposed method can be resumed below. First, it is unnecessary to discretize the cutting edge and tool feed motion and rotation motion. Second, influences of cutting modes and cutter inclinations are studied systematically and explicitly for the first time. The generality of the algorithm makes it possible to calculate the pointwise topography value on any sculptured surface of the workpiece. Besides, the proposed method is proved to be more efficient insaving computing time than the time step method that is commonly used. Finally, some examples are presented and simulation results are compared with experimental ones.

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