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Method for creating computer-aided design (CAD) solid models from numerically controlled (NC) machine instructions

  • US 6,606,528 B1
  • Filed: 06/21/2000
  • Issued: 08/12/2003
  • Est. Priority Date: 06/21/2000
  • Status: Expired due to Term
First Claim
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1. A method of generating a computer-based three-dimensional representation of an object from data containing dimensions of a cutting tool and a plurality of points defining one or more tool paths of that cutting tool, the object resulting from the operation of the cutting tool along the tool paths within an initial tool solid, which operation results in removal of one or more tool path solids from the initial tool solid, the method comprising the steps of:

  • creating a mathematical model of the initial tool solid from data containing dimensions of a cutting tool and a plurality of points defining one or more tool paths such that the initial tool solid model encompasses the tool paths;

    creating a mathematical model of the tool path solid removed along each tool path by defining a modeling tolerance and representing the tool path as the mathematical model if the difference between the points defining the tool path and the points of the mathematical model is less than or equal to the modeling tolerance; and

    subtracting each tool path solid model from the initial tool solid model;

    thereby producing the computer-based three-dimensional representation of the object.

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