Error modelling–based machining sequence optimization of a pocketed beam milling: part A, end supported beam

Abstract This paper, on the basis of error modelling, proved optimal pocket machining sequences a simply end supported pocketed beam using mathematic induction method. The sequence with minimum floor height is from both ends to middle and not unique because symmetric supports about central plane; meanwhile, wall position fixed free unique. A Al7075 (744 mm in length, 172 width, 100 thickness ) 9 pockets was used demonstrate sequences. One pocketing (roughing), maximum distortion 0.693 appeared sides rather than middle, which were 0.477 0.388 mm, part growth produced 0.719 mm. On same part, further demonstrated finishing (with 1 dimension stock for all surfaces) errors fully removed. typical representative case results conclusion can be extended plate/board even surfacing.