Segmentation Based On The Deposition / Engraving And Milling In One Entity Mechanism Of Rapid Prototyping And Key Technologies

Segment Manufacturing using Deposition, Engraving and Milling is based on the combination of material addition and material removal. It builds part with high precision and high flexibility. The new technique is an important attempt for the development of RP.The rule in which the part is segmented is defined. A new technique is found , which is decomposed into Part Decomposition and Planning, Material Deposition, Material Sculpture and Milling, support material removal. They are investigated separately.There are a variety of constraints on the selection of materials and processes. It requires compatible part and support materials, subject to the constraints of the deposition and removal processes. The constraints on part and sacrificial support materials were identified and a compatible material combination was developed: Unsaturated polyester and wax .Some other investigation is conduct, such as the Effect of additive on the cure of polyester, the effect of the filling on strength and shrinkage. The Part strength is determined both by the bulk material properties of the part materials and by their interlayer bonding.Investigation on material shrinkage and part distortion was conducted, some improvements was done. The experiment data show they are very resultful.Software based on STL file is developed to Segment the part. It is proved to be resultful.Innovations: 1. Found the new RP technique in which material addition and material removal are combined.2. A compatible material combination was developed. 3.A new rule to segment part is defined, basing on which the arithmetic is developed.