Abstract
The machining strategy is one of the parameters which practically influences the time of the different manufacturing geometric forms. The machining time directly relates to the machining efficiency of the tool paths. In area milling machining, there are two main types of tool path strategies: a direction-parallel milling and contour-parallel milling. Then direction-parallel milling is simple compared with a contour-parallel strategy. This paper proposes a new model of the direction-parallel machining strategy for triangular pockets to reduce the tool path length. The authors develop an analytical model by appending additional the tool path segments to the basis tool path for cutting un-machined area or scallops, which remained along the boundary. To validate its results, the researchers have compared them to the existing model found in the literature. For illustrating the computation of this model, the study includes two numerical examples. The results show that the proposed analytic direction-parallel model can reduce the total length of machining. Thus, it can take a shorter time for milling machining.
Highlights
INTRODUCTION1One of the most crucial mechanical process in machining parts in computer-aided manufacturing (CAM) is pocket milling
The machining strategy is one of the parameters which practically influences the time of the different manufacturing geometric forms
The triangular pocket machining is frequently met in aerospace vehicle manufacturing because this machining supports achieving of structural properties, namely strong and light (Bieterman & Sandstrom, 2003)
Summary
One of the most crucial mechanical process in machining parts in computer-aided manufacturing (CAM) is pocket milling. Two basic approaches of wellestablished tool path strategies for pocket milling are the direction parallel (zigzag or staircase) machining strategy and contour parallel (window-frame) machining strategy. The direction-parallel strategy is preferably suited for face milling features This strategy is much more straightforward concerning the computation, the ability to retain persistent chip loads in high-speed machining, and simple visualization (Sarma 1999; Park & Choi, 2001). In this machining strategy, the tool changes from up cut to down lead to the short lifetime the tool and the machine chatter.
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