摘要:
Precision-folded, high strength, fatigue-resistant structures and a sheet therefore are disclosed. To form the structures, methods for precision bending of a sheet of material along a bend line and a sheet of material formed with bending strap-defining structures, such as slits or grooves, are disclosed. Methods include steps of designing and then separately forming longitudinally extending slits or grooves through the sheet of material in axially spaced relation to produce precise bending of the sheet when bent along the bend line. The bending straps have a configuration and orientation which increases their strength and fatigue resistance, and most preferably slits or arcs are used which causes edges to be engaged and supported on faces of the sheet material on opposite sides of the slits or arcs. The edge-to-face contact produces bending along a virtual fulcrum position in superimposed relation to the bend line. Several slit embodiments suitable for producing edge-to-face engagement support and precise bending are disclosed. With these teachings, forming numerous three-dimensional load-bearing structures from a two dimensional sheet are enabled. Examples of straight and curved beams, chassis, and exoskeletons are disclosed.
摘要:
A three-dimensional structure formed with precision fold technology includes a first sheet section having a first edge formed with a first joinder structure proximate the first edge, a second sheet section having a second edge formed with a second joinder structure proximate the second edge for interlocking engagement with said first joinder structure, and a plurality of folding structures formed in the sheet of material along a plurality of desired fold lines which divide the sheet of material into said first and second sheet sections, the folding structures being formed to produce sufficiently precise folding of the sheet of material along the fold lines to position the first and second edges together such that said first and second joinder structures interengage with one another and retain the sheet of material in a folded condition.
摘要:
A sheet of material formed for folding into a three-dimensional structure. The sheet has edges formed with joinder structures, such as dovetails, and a plurality of folding structures, such as slits, grooves or displacements, that control folding of the sheet in a manner causing the joinder structures to be folded into interlocking interengagement. The folding structures are configured for very precise folding of the sheet so that the folding structures will be in precise registered juxtaposition. Additionally, the sheet of material includes a retention structure, such as a retention fold or a retention deformation, which will prevent unfolding of the sheet. A method for fastener-free joining of sheet edges together also is disclosed, as are the resulting three-dimensional structures.
摘要:
A method of preparing a sheet of material for bending along a bend line comprising the step of forming of at least one displacement in the thickness direction of the sheet of material with a portion of the periphery of the displacement closest to the bend line providing an edge and opposed face configured in position to produce edge-to-face engagement of the sheet on opposite sides of the periphery during bending. The forming step is preferably accomplished using one of a stamping process, a punching process, a roll-forming process and an embossing process. A sheet of material suitable for bending using the process also is disclosed, as are the use of coatings, shin guards and displacing the area of the sheet between bending inducing slits.
摘要:
A method of preparing a sheet of material for bending along a bend line includes the step of forming at least one displacement in the thickness direction of the sheet of material, the displacement including a flat zone substantially parallel to the sheet of material with a portion of the periphery of the flat zone extending along and adjacent to the bend line, and including an angled transition zone interconnecting the flat zone with a remainder of the sheet of material. The forming step is preferably accomplished using one of a stamping process, a punching process, a roll-forming process and an embossing process. A sheet of material suitable for bending using the process also is disclosed, as are the use of coatings, shin guards and displacing the area of the sheet between bending inducing slits.
摘要:
A method for precision bending of a sheet of material (41, 241, 341, 441) along a bend line (45, 245, 345, 445) and the resulting sheet are disclosed. A method includes a step of forming longitudinally extending slits (43, 243, 343, 443) through the sheet of material in axially spaced relation to produce precise bending of the sheet (41, 241, 341, 441) along the bend line (45, 245, 345, 445) with edges (257, 457) engaged and supported on faces (255, 455) of the sheet material on opposite sides of the slits. The edge-to-face contact produces bending along a virtual fulcrum position in superimposed relation to the bend line (45, 245, 345, 445). Several slit embodiments (43, 243, 343, 443) suitable for producing edge-to-face engagement support and precise bending are disclosed, as is the use of the slit sheets to enhance various fabrication techniques.
摘要:
A bending tool system is provided for forming a three-dimensional structure from a two-dimensional sheet material which includes a predetermined fold line. The system includes a tool base for receiving and supporting the sheet material in a work plane, a clamp for engaging against the sheet material to secure a portion of the sheet material relative to the tool base, a locator for positioning the sheet material relative to the tool base such that the clamp extends through the clamping aperture, and a bending arm located adjacent the clamp, the bending arm movable from an initial position located below the work plane to an upper position in order to apply an upward force against an unsecured portion of the sheet metal to effect bending of the sheet material about the fold line. A method of using the tool system for bending sheet materials is also described.
摘要:
A sheet material is provided for forming a precision folded structural and aesthetic component of a contoured three-dimension. The sheet material may include a forward-panel bend line separating a forward panel and a fold panel, the forward-panel bend line may be curved to impart contour on at least the fold panel upon bending of the sheet material about the forward-panel bend line, and a fold line extending along the fold panel, the fold line may be substantially straight to impart the contour of the fold panel to the upper panel upon bending of the sheet material about the fold line. The sheet material may include an upper panel, a first upper-panel-flange bend line separating a forward upper flange from a warp zone of the upper panel, the first upper-panel-flange bend line may be curved to impart a first contour on one or more of the first upper flange and the warp zone, a second upper-panel-flange bend line separating a second upper flange from the warp zone, the second upper-panel-flange bend line may be curved to impart a second contour on one or more of the second upper flange and the warp zone, and first and second curved warp zone bend lines separating the warp zone from a remainder of the upper panel, the first and second curved warp zone bend lines configured to localize bending along the bend line and substantially isolate warpage within the warp zone. A method of forming the same is also disclosed.
摘要:
A device (41) for positioning a joinery fastener (74) in a joinery member (33) for later use in forming a joinery assembly. The fastener positioning device (41) includes a feed magazine (82) formed for feeding joinery fasteners (74) to a gripping apparatus (83). The gripping apparatus (83) is positioned to receive the fasteners (74) and is further adapted to releasably grip individual fasteners (74) at a position (103) below the fastener head (86) to hold the fasteners (74) in a known and controlled, indexed relation to the gripping apparatus (83). The gripping apparatus is movable between a fastener gripping position to a fastener placement position while the pointed end (88) of the fastener (74) remains in indexed relation, and a placement arm (92) is formed to urge the fastener (74) from the gripping apparatus (83) and into interference fit with the joinery member (33). A joinery member (33) having a fastener (74) mounted in interference fit with a bore (68) therein is also disclosed, as is a preferred form of pocket screw fastener (74), a fastener-receiving bore (68) with an elongated transverse cross section and a process for automatically positioning fasteners (74) in joinery members (33) for later joining to another member.
摘要:
An edge banding apparatus (21) for adhesively securing banding material (28) to an edge of a board (27). The apparatus (21) includes a board support structure (22) formed to support a board (26) in a near vertical orientation with the edge (27) to be banded in a downwardly facing orientation. An adhesive applying assembly (23) is positioned relative to the board support structure (22) and is formed to apply adhesive (54) to the downwardly facing edge (27) during relative motion between the board (26) and the adhesive applying assembly (23). The apparatus (21) includes a banding material applying assembly (24) positioned downstream of the adhesive applying assembly (23) and formed to apply a banding material (28) to the edge after the adhesive (54) is applied and a cutoff assembly (25) which cuts off the banding material (28) as the banded board (26) passes the cutoff device (25). Pneumatic adhesive level sensing assembly (71) and a pneumatic adhesive refilling assembly are both disclosed, as is a method of edge banding a board (26).