This paper presents an efficient search algorithm to recognize through-hole features for demoulding purposes. Here the hole features include cylindrical and non-cylindrical hollow features, such as slots and pockets. The approach relies on a topological-based graph, which is described by a B-Rep solid model. From the case study on several industrial parts, the methodology developed is found to be effective in patching the through-hole features appearing in complex plastic parts.
ChenL. L.ChouS. Y.WooT. C.Parting directions for mould and die design. Computer-Aided Des., December 1993, 25(12), 762–768.
2.
RosenD. W.Toward automated construction of moulds and dies. Trans. ASME, Computers in Engng, 1994, 1, 317–326.
3.
WeinsteinM.ManoochehriS.Geometric influence of a moulded part on the draw direction ranges and parting line locations. In The 20th ASME Design Automation Conference, 1994, DE Vol. 69–1, pp. 585–592 (American Society of Mechanical Engineers, New York).
4.
ShinK. H.LeeK.Design of side cores of the injection moulds from automatic detection of interference faces. J. Des. Mfg, 1993, 3, 225–236.
5.
NeeA. Y. C.FuM. W.FuhJ. Y. H.LeeK. S.ZhangY. F.Determination of optimal parting direction in plastic injection mould design. Ann. CIRP, 1997, 46(1), 429–432.
6.
WeinsteinM.ManoochehriS.Optimum parting line design of moulded and cast parts for manufacturability. J. Mfg System, 1997, 16, 1–12.
7.
TanS. T.YuanM. F.SzeW. S.KwongK. W.Parting lines and parting surfaces of injection moulded parts. Proc. Instn Mech. Engrs, Part B, Journal of Engineering Manufacture, 1990, 204(B4), 211–222.
8.
CunninghamJ. J.DixonJ. R.Designing with features: The origin of features. Trans. ASME, Computer Engng, 1988, 237–243.
9.
De FlorianiL.Feature extraction from boundary models of three-dimensional objects. IEEE Trans. Pattern Analysis and Machine Intell., 1989, 11(8), 785–798.
