Siemens Product Lifecycle Management Software Inc.

Siemens Industry Software Gmbh

Feng Yu

Eric Mawby

Hui Qin

Douglas Joseph King

Howard Charles Duncan Mattson

Yanong Zhu

Dick Baardse

Show Tien Wang

Lian Fang

Jeffrey A Weidman

Yu (Peggy) Xia

Ying (Tina) Lin

Xiuchang Li

Wei Li

Bo Kyoung Moon

Jinbiao Zhu

Hai Peng Mao

Haipeng Mao

Liwei Gao

Ying Lin

Hiren Dedhia

Methods for accurately modeling blends in a solid model and corresponding systems and computer-readable mediums. A method includes receiving a solid model including a plurality of faces and bosses, and identifying a pocket from the plurality of faces, including one or more pocket edges to be blended. The method includes performing an analyze pockets process on the pocket and identifying at least one of a tool type, a tool method, or a tool dimension for machining the pocket. The method includes performing a blend pocket process to model blends on the pocket edges and adding blends to the solid model at the pocket edges in a predefined order, according to the blend pocket analysis, to produce a modified solid model. The method includes displaying the modified solid model by the data processing system.

Modeling of blends on bosses and faces of a solid model pocket

In computer assisted design, a sheet body is patched to a target body, wherein the boundary edges of sheet body are partially coincident with the target body. All segments of the sheet body boundary that are coincident or non-coincident to the target body are detected; for a non-coincident segment with at least one end point which is in the interior of the target body but not on the sharp edge, the corresponding patch position on the target body is determined, and the segment or an extension is projected on the target body; for a non-coincident segment with both end points on sharp edges of the target body, the open region between the segment and the sharp edges is filled as extension of the faces of sharp edges; the coincident segments and the projected or extended non-coincident segments are combined to divide the target body into separate regions; and one of the regions is replaced by the sheet body.

Method for patching a sheet body to a target body

Methods for modifying geometric models and corresponding systems and computer-readable mediums. A method includes receiving a geometric model, the geometric model including a plurality of curves. The method includes receiving a selection of one or more curves of the plurality of curves, finding at least one other curve of the plurality of curves that is related to the selected curve, and finding relationships between the selected curve and the other curve(s), including adding the selected curve, the other curve(s), and the relationships to a selected curve set. The method includes pre-processing the selected curve set, including de-activating a set of constraints for the geometric model. The method includes receiving a modification of the selected curve and modifying the selected curve set to produce a modified geometric model and modified selected curve set. The method includes post-processing the modified selected curve set, including re-activating and applying constraints for the geometric model.

Modifying constrained and unconstrained curve networks

Product Data Management (PDM) systems and methods. A method includes receiving a target body and a tool body, and evaluating a body type of the target body and a body type of the tool body. The method includes evaluating interactions between the target body and the tool body, and applying comparison criteria to determine spatial relation and relative convexity of an intersection between the target body and the tool body. The method includes identifying tool face regions of the tool body based on the evaluations and the determined spatial relation and relative convexity of the intersection. The method includes adding the tool face regions to the target body to produce a modified target body.

Determining boolean region participants for a notional context given arbitrary bodies

Methods for CAD editing and corresponding systems and computer-readable mediums. A method includes receiving a CAD model including a plurality of entities and receiving a user input including a selection of at least one entity and a movement of the selected entity. The method includes applying any basic condition behaviors that correspond to the user input and applying any optional condition behaviors that correspond to the user input. The method includes building a variational system to be solved based on the user input, any applied basic condition behaviors, and any optional condition behaviors. The method includes performing a variational solve on the variational system to produce an edited CAD model and storing the edited CAD model.

Local behavior in a variational system

Product data management systems, methods, and mediums. A method includes receiving a graphic model having a plurality of curves forming a curve chain and defining a distance threshold and angle threshold corresponding to the model. The method includes optimizing the curve chain under shape constraints, identifying a surface associated with the curve chain and optimizing the curve chain with under surface and distance constraints with respect to the identified surface. The method includes storing the graphic model with the optimized curve chain.

Curve chain connections under surface, distance, and shape constraints

Methods for computer-aided design and visualization and corresponding systems and computer-readable mediums. A method includes receiving a BRep model and recognizing a plurality of notch or cliff blends in the BRep model. The method includes defining a chain of at least two of the plurality of notch blends. The method includes labeling the notch blends in the chain. The method includes storing the BRep model, including one or more of the recognized notch blends, the chain, and the labels of the notch blends.

Notch blends in BRep models

A system, method, and computer program for selecting modification features on a solid model that is manipulated in a computer having software instructions, comprising: a computer system, wherein the computer system includes a memory, a processor, a user input device, and a display device; a computer generated geometric model stored in the memory in the memory of the computer system; and wherein the computer system selects a modification feature directly on a solid model using a computer peripheral input that communicates a modification intent from a user; suggests a plurality of additional selection features to include with the modification feature; verifies that the included plurality of additional selection features conforms to the modification intent by a visual highlighting; modifies the solid model according to the modification intent that results in a modified solid model and modified visual display information; and displays the modified solid model using the modified visual display information to the user; and appropriate means and computer-readable instructions.

System and method for active selection in a solid model

According to one embodiment of the invention, a method for interfacing with a surface within a computer-aided drawing environment includes determining that a plurality of curves operable to define the surface constitute a P&#xd7;1 surface condition. A P&#xd7;1 surface condition is defined by a number of first curves equal to P and only one second curve. P is an integer greater than zero. The method also includes converting the P&#xd7;1 surface condition into an N&#xd7;M surface condition in response to determining that a plurality of curves constitute a P&#xd7;1 surface condition. An N&#xd7;M surface condition is defined by a number of third curves equal to N and a number of fourth curves equal to M. N and M are integers greater than one. The method also includes constructing an N&#xd7;M surface under the N&#xd7;M surface condition. The method also includes modifying the N&#xd7;M surface to edit a drawing.

Apparatus, method, and system for drafting multi-dimensional drawings

A CAD system, method, and computer readable medium. A method includes loading a CAD object including a plurality of faces, and identifying a plurality of candidate faces from the plurality of faces. The candidate faces can include candidate blends. The method includes combining multiple ones of the candidate faces into a candidate blend chain, including at least one candidate blend. The method includes replacing the candidate blends with accurate blends to produce a corrected blend chain, and storing the corrected blend chain with the accurate blends as part of the CAD object.

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Irvine, CA, United States of America

Feng Yu