Patent ID: 6158497
Filing Date: 2000-12-12
Classification: B22C,B29C,B33Y

Abstract:
A method of producing a model for use in the manufacture of a mould that consists of a multisection mould, said method comprising the steps of: forming a first positive model of an item to be moulded in a moulding tool; providing said model with a flange, which is provided in a joint surface being formed with an outer circumference outside of and along the outer periphery of the model; displacing parts of the model to form a predetermined distance between the parts; constructing, within a computer environment, a positive model with a built-in joint surface extending inside the model and out to the outer periphery of the model; separating, within said computer environment, the item into several parts along the joint surface; displacing the parts along a chosen direction, such that the flange is formed electronically in the computer environment, said flange being coherent and being extended in the distance between the parts along said joint surface, and such that a physical model in space of the item with the flange is formed in a copy modeling process.