摘要:
A sheet of material (21, 61, 81) formed for control bending along a bend line (23, 63) while maintaining a continuous web of material (26) across the bend line (23, 63). The sheet has at least one groove (22, 62, 82) formed therein with a central groove portion (24, 64, 84) extending in the direction of and positioned proximate to a desired bend line (23, 63). The groove is formed with a continuous web of material (26) at a bottom of the groove (22, 62, 82) and has a configuration defining at least one bending strap (27, 67) extending across the bending line (23, 63) at the end of the groove with a centerline (28) of the bending strap (27, 67) oriented obliquely across the bend line (23, 63) so that a balancing of the forces during bending of the web along the central portion (24, 64, 84) of the grooves and bending of the oblique bending strap occur and control the location of bending of the sheet. A method of preparing a sheet of material (21, 61, 81) for bending while maintaining a continuous membrane (26) across the bend line (23, 63) is also disclosed.
摘要:
A sheet of material (21, 61, 81) formed for control bending along a bend line (23, 63) while maintaining a continuous web of material (26) across the bend line (23, 63). The sheet has at least one groove (22, 62, 82) formed therein with a central groove portion (24, 64, 84) extending in the direction of and positioned proximate to a desired bend line (23, 63). The groove is formed with a continuous web of material (26) at a bottom of the groove (22, 62, 82) and has a configuration defining at least one bending strap (27, 67) extending across the bending line (23, 63) at the end of the groove with a centerline (28) of the bending strap (27, 67) oriented obliquely across the bend line (23, 63) so that a balancing of the forces during bending of the web along the central portion (24, 64, 84) of the grooves and bending of the oblique bending strap occur and control the location of bending of the sheet. A method of preparing a sheet of material (21, 61, 81) for bending while maintaining a continuous membrane (26) across the bend line (23, 63) is also disclosed.
摘要:
A load-bearing chassis for a motor vehicle includes a three-dimensional structure formed by a sheet of material including a plurality of bend lines. Each bend line has adjacent strap-defining structures defining a bending strap with a longitudinal strap axis oriented and positioned to extend across the bend line. Preferably the bend lines are configured and positioned to form a load-bearing chassis member when the sheet of material is bent along the bend lines. The bend lines defining geometrical features of the chassis. A method of forming the chassis is also disclosed.
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 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 process of forming bend-controlling structures, such as slits, grooves or displacements (22), in a sheet of material (21, 121, 221, 321, 421, 521, 621, 721). The bend-controlling structures (22) have central portions (26) extending substantially parallel to a desired bend line (23) on the sheet and end portions (27) which diverge away from the bend line (23). In one embodiment the process includes the step of forming the bending straps (24) between pairs of slit end portions (27) at a desired spaced apart distances along the bend line (23) with the straps (24) having a desired configuration, and the step of forming central portions (26) which connect the end portions (27) to complete the slits (22) using a separate die set. A plurality of end portion dies (51/54) can be used to produce end portions (27) of various shapes and straps (24) of various widths, and a single set of central portion forming dies (71/74) are used to connect the end portions (27). In other embodiments die sets producing a single end portion (27) or mirror image impressions (A,B) are used and preferably overlapped to produce the complete bend-controlling structure (22). A modular die assembly (500) also is disclosed in which the bend-controlling structures can be produced by modular die inserts (511-514, 611-614). Finally, a selection of die sets (722a, 722b, 722c) of differing length from a group of die sets can be made to position the bending straps (24) at desired locations along the bend line.
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 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 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 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.