Mitsubishi Electric Research Laboratories, Inc.

The Boeing Company

Huseyin Erdim

Alan Sullivan

Robert William Grube

Mitchell Tyler Lee

Amit Kumar Agrawal

Matthew E Brand

Paul Zack Thunemann

Michael Drumheller

Stefanie Anita Meier

Tamas Kalmar-Nagy

A modeling system is provided which retrieves from memory the 3D virtual model of an object; extract an outer surface of the 3D virtual model, the outer surface including a plurality of faces; identify feature curves in each of the plurality of faces of the outer surface; generate a parameterized surface from the identified feature curves; and output the feature curves and the parameterized surface. The system may generate a list of feature curve pairs that are adjacent to one another; obtain face pairs corresponding to the feature curve pairs; obtain and add a list of faces in the outer surface to a connectivity graph mapping points in 3D space to the feature curves; for each pair of connected faces, evaluate whether an angle difference between normals of the connected faces is greater than a threshold; and then extract a feature curve based on the pair of connected faces.

Modeling system for 3D virtual model

An embodiment of the present disclosure provides a method and apparatus for managing a part. The method comprises identifying, by a computer system, parameters for the part. Further, the method comprises identifying, by the computer system, a number of additional parameters used in manufacturing the part from a preform. Yet further, the method comprises automatically generating, by the computer system, a preform design for the preform using the parameters for the part and the number of additional parameters, wherein the preform design enables manufacturing the preform using an additive manufacturing system in a manufacturing environment.

Preform fabrication system

An example method is described that includes providing, for display, a three-dimensional (3D) model of a part. The method also includes receiving, via a graphical user interface, data defining a cutting plane. The cutting plane intersects the 3D model of the part and divides the 3D model into a first portion and a second portion. The method further includes determining a first set of minimum-volume bounding boxes that is tangent to the cutting plane and encloses the first portion of the 3D model, and determining a second set of minimum-volume bounding boxes that is tangent to the cutting plane and encloses the second portion of the 3D model. The method also includes providing a preform geometry for the part. The preform geometry includes the first set of minimum-volume bounding boxes and the second set of minimum-volume bounding boxes.

Interactive graphical user interface (GUI) for designing preform geometries

A method determines a feedrate of a tool machining a workpiece according to a path. The method partitions the path into a set of segments, such that within each segment a function of engagement of the tool and the workpiece is substantially constant. Next, the method determines a feedrate for each segment in the set.

System and method for determining feedrates of machining tools

A method determines a path of a tool machining a pocket shape in a workpiece. The pocket shape is defined by a closed curve in an x-y plane. The method determines positions and velocities of a motion of an oscillator having an energy defined by a function that is positive within a boundary of the pocket shape and equals zero on the boundary of the pocket shape. The method determines coordinates of the path of the tool based on corresponding pairs of position and velocity values of the motion, wherein a position value of each pair represents an x coordinate of the path of the tool in the x-y plane, and a velocity value of each pair represents a y coordinate of the path of the tool in the x-y plane.

Oscillator-based path planning for machining of a pocket shape in workpiece

A method for generating a trajectory based on an input trajectory formed by points representing spatial coordinates for a numerically controlled (NC) process determines a plurality of sequences of the points and determines, for each sequence, local costs of each point in the input trajectory. Each sequence is formed by removing a unique combination of points from the input trajectory and the local cost of a point for a sequence is determined based on a spatial arrangement of the point with respect to at least some of points in the sequence. For each sequence, a sum of corresponding local costs of each point in the input trajectory is determines and the trajectory is determined based on an optimal sequence with an optimal value of the sum of the local costs.

Method for generating trajectory for numerical control process

A method simulates a machining of a workpiece by a tool. The method populates a swept volume representing a motion of the tool in relation to the workpiece with a set of rays, and determines a volume removed from the workpiece by the swept volume based on intersections of at least some rays with the workpiece. A model of the workpiece is modified based on the removed volume.

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Seattle, WA, United States of America

Huseyin Erdim