Computational geometry design for sheet metal machinery corner
AssigneeSiemens Product Lifecycle Management Software Inc.
InventorAlex Goldenberg
Life of this patent
Estimating the term…
Abstract
One or more embodiments of the presently preferred invention provides a method and a computer-program product for creating a parametric corner on a sheet metal design. The parametric corner is a machinery corner that can be constructed in the formed or unformed state and successfully handles a bend corner with different radii and bend angles. Further, the machinery corner allows placing features thereon, as well as producing unformed geometrical representations of said placement.
Claims25
A method for creating a parametric corner on a three-dimensional design, comprising the steps of:
- associating a plurality of adjacent geometric members on a target body,
- calculating, in a computer, a plurality of mapped bend lines relative to said geometric members, at least one of said mapped bend lines connecting a first point on a first surface of said target body and a second point on a second surface of said target body, said first point calculated from a first normal to a first line extended from a flange of said target body and said second point calculated from a second normal to a second line extended from said flange of said target body,
- connecting, by the computer, at least one parametric surface to said geometric members, and
- forming a machinery corner, by the computer, by sewing each of said parametric surfaces together,
- whereby a design feature can be successfully placed on said machinery corner.
A tangible, non-transitory computer-readable medium storing computer executable instructions that, when executed, cause a computer system to create a parametric corner on a three-dimensional design, the instructions comprising:
- instructions for associating a plurality of adjacent geometric members on a target body,
- instructions for calculating a plurality of mapped bend lines relative to said geometric members, at least one of said mapped bend lines connecting a first point on a first surface of said target body and a second point on a second surface of said target body, said first point calculated from a first normal to a first line extended from a flange of said target body and said second point calculated from a second normal to a second line extended from said flange of said target body,
- instructions for connecting at least one parametric surface to said geometric members, and
- instructions for forming a machinery corner by sewing each of said parametric surfaces together,
- whereby a design feature can be successfully placed on said machinery corner.
A method for creating a parametric corner having a top parametric surface and a bottom parametric surface on a sheet metal design, comprising the steps of:
- associating, by a computer, a plurality of adjacent geometric members on a target body by trimming at least one extrude, wherein each of said geometric members are in one of a formed state, an unformed state and a formed-unformed state, having a plurality of discrete parameters, wherein said plurality of discrete parameters contain at least one of a bend angle, a bend radii, a corner angle, and a bend direction,
- calculating, by the computer, a plurality of mapped bend lines relative to said geometric members, wherein said mapped bend lines subdivide at least one side bend face on one of said geometric members, and wherein at least one of said mapped bend lines connects a first point on a first surface of said target body and a second point on a second surface of said target body, said first point calculated from a first normal to a first line extended from a flange of said target body and said second point calculated from a second normal to a second line extended from said flange of said target body,
- connecting, by the computer, at least one parametric surface to said geometric members, comprising the steps of:
- subdividing said parametric surface into a first surface portion and a second surface portion,
- forming a first B-surface constrained by at least one said mapped bend line and a geometric member common point on said first surface portion, and
- forming at least one B-surface on said second surface portion, and
- forming a machinery corner, by the computer, by sewing each of said parametric surfaces together, and
- uniting said machinery corner to said target body by the computer, whereby a design feature can be successfully placed on said machinery corner.
Dependencies are inferred from the claim text.