Jan 27, 2026

US12536347 - Helical patterning on a curved surface for additive manufacturing of a fragmentation device

Methods of creating geometry for a fragmentation device are presented. The geometry may be generated using computer-aided design tools. An inner body with a curved surface may be generated. An intersection line may be generated on the curved surface by tracing a helical path. A fragment comprising a fragment surface tangent to the curved surface may be generated and aligned with the intersection line. A pattern of fragments may then be generated based on the fragment, the intersection line, and the curved surface. The geometry of the fragmentation device may be stored for manufacture of the fragmentation device by additive manufacturing.

Assignee: Honeywell Federal Manufacturing & Technologies, LLC
Inventors: Megan Elizabeth Bax
Filing date: 2022-05-31

fragmentationadditivemanufacturingdefenseself-defense

This patent describes a method for creating a fragmentation device using additive manufacturing techniques, focusing on generating a helical pattern on a curved surface. The process involves designing a three-dimensional inner body and fragments that align with a helical intersection line, allowing for efficient production of the fragmentation device.

Claim 1

1 . A fragmentation device created by a process, the process comprising: generating a three-dimensional inner body comprising a three-dimensional convex cylinder comprising curvature in three orthogonal directions; generating an intersection line that traces a helical path along an outer surface of the three-dimensional convex cylinder; generating a three-dimensional fragment comprising an inner surface tangent to the three-dimensional convex cylinder at a point, wherein the inner surface comprises an inner surface area, wherein the three-dimensional fragment further comprises: the outer surface comprising an outer surface area, wherein the inner surface corresponds to an interior of the fragmentation device proximal to the three-dimensional convex cylinder and the outer surface corresponds to an exterior of the fragmentation device distal to the three-dimensional convex cylinder; and a loft defined by the outer surface area being greater than the inner surface area; aligning at least one edge of the three-dimensional fragment parallel with the intersection line at the point, wherein the three-dimensional fragment comprises at least one right angle between two adjacent edges; generating, from a start angle, a three-dimensional helical pattern of the three-dimensional fragments on the three-dimensional convex cylinder along the intersection line, wherein each three-dimensional fragment of the three-dimensional helical pattern of the three-dimensional fragments is based on a fragment geometry of the three-dimensional fragment; generating a three-dimensional layer of the three-dimensional fragments around the three-dimensional convex cylinder from the three-dimensional helical pattern of the three-dimensional fragments; storing a geometry of the fragmentation device as computer-readable instructions to be manufactured by additive manufacturing; and forming the fragmentation device by the additive manufacturing according to the computer-readable instructions. generating a three-dimensional inner body comprising a three-dimensional convex cylinder comprising curvature in three orthogonal directions; generating an intersection line that traces a helical path along an outer surface of the three-dimensional convex cylinder; generating a three-dimensional fragment comprising an inner surface tangent to the three-dimensional convex cylinder at a point, wherein the inner surface comprises an inner surface area, wherein the three-dimensional fragment further comprises: the outer surface comprising an outer surface area, wherein the inner surface corresponds to an interior of the fragmentation device proximal to the three-dimensional convex cylinder and the outer surface corresponds to an exterior of the fragmentation device distal to the three-dimensional convex cylinder; and a loft defined by the outer surface area being greater than the inner surface area; the outer surface comprising an outer surface area, wherein the inner surface corresponds to an interior of the fragmentation device proximal to the three-dimensional convex cylinder and the outer surface corresponds to an exterior of the fragmentation device distal to the three-dimensional convex cylinder; and a loft defined by the outer surface area being greater than the inner surface area; aligning at least one edge of the three-dimensional fragment parallel with the intersection line at the point, wherein the three-dimensional fragment comprises at least one right angle between two adjacent edges; generating, from a start angle, a three-dimensional helical pattern of the three-dimensional fragments on the three-dimensional convex cylinder along the intersection line, wherein each three-dimensional fragment of the three-dimensional helical pattern of the three-dimensional fragments is based on a fragment geometry of the three-dimensional fragment; generating a three-dimensional layer of the three-dimensional fragments around the three-dimensional convex cylinder from the three-dimensional helical pattern of the three-dimensional fragments; storing a geometry of the fragmentation device as computer-readable instructions to be manufactured by additive manufacturing; and forming the fragmentation device by the additive manufacturing according to the computer-readable instructions.

Google Patents

https://patents.google.com/patent/US12536347

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12536347