Device for producing at least one undercut in a slotted or closed profiled sheet section
A sheet metal, undercut technology for vehicle components, substructures, transportation and packaging, which solves problems of unsuitability for manufacture, proposal unsuitable, removal of mandrels, etc.
Active Publication Date: 2016-02-10
THYSSENKRUPP STEEL EURO AG
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Problems solved by technology
[0006] However, the proposal disclosed in DE 10 2004 046 687 B3 is not suitable or hardly suitable for producing a generally cylindrical hollow profiles (especially with inwardly oriented undercuts)
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[0025] The device shown in the drawing is used for producing undercuts in slotted or closed hollow profiles made of sheet metal. The device comprises a three-part core 1 which may also be referred to as a core unit or a detachable core.
[0026] The core unit 1 is elongated and comprises two outer core parts 1.1 and 1.2 each having a plurality of recesses 2 and 3 for closing, for example Inwardly oriented undercuts are formed in sheet metal profiles. Between the two outer core parts 1.1 and 1.2 is arranged an inner core part 1.3 which is movable in a linear manner relative to the outer core parts 1.1 and 1.2 and which has corrugated working surfaces 1.31 and 1.32. The inner surfaces 1.11 and 1.12 of the outer core parts 1.1 and 1.2 facing the running surfaces 1.31 and 1.32 of the inner core part 1.3 are likewise of corrugated configuration. The corrugated running surfaces 1.31, 1.32 of the inner core part 1.3 and the inner surfaces 1.11, 1.21 of the outer core parts 1.1, 1.2...
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The invention relates to a device for producing at least one undercut in a slotted or closed profiled sheet section, comprising a core (1) that is introduced into the profiled sheet section or is used as a support core for a semifinished sheet metal product from which the profiled sheet section is produced. The device is characterized in that the core (1) has at least two outer core sections (1.1, 1.2), at least one of which has at least one depression (2, 3) or at least one projection for shaping an undercut into the profiled sheet section, and an inner core section (1.3) is arranged between the at least two outer core sections (1.1, 1.2), said inner core section being movable relative to the outer core sections (1.1, 1.2) and having at least one effective surface (1.31, 1.32) which is designed in the shape of a cam or in an inclined manner relative to the outer core sections (1.1, 1.2) in a specified movement direction (P1) of the inner core section (1.3). The outer core sections (1.1, 1.2) are moved away from each other by moving the inner core section (1.3) in the specified movement direction (P1) relative to the outer core sections, and the outer core sections are then moved towards each other upon moving the inner core section (1.3) in the opposite movement direction (P4).
Description
technical field [0001] The invention relates to a device for producing at least one undercut in a slotted or closed sheet metal profile, the device comprising a core which is inserted into the sheet metal profile or used as a sheet metal product for semi-processing The supporting core, the sheet metal profile is made from this semi-processed sheet metal product. Background technique [0002] During the manufacture of at least partially closed profiles (grooved profiles) or such semi-finished products, continuous forming methods or intermittent forming methods can be used. For example, continuous forming is performed by roll forming. Intermittent roll forming is preferred when continuous roll forming cannot be applied due to the complex profile or geometry of the semi-finished product. For example, in the discontinuous production of at least partially closed profiles or semi-finished products, so-called U-O forming methods are known. [0003] Prior art includes the use of ...
Claims
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IPC IPC(8): B21D5/01B21D53/88B62D21/15
CPCB21D5/015B21D53/88B21D13/04
Inventor 托马斯·格罗瑟约舒坎普托马斯·弗勒特米夏埃尔·布吕根布罗克
Owner THYSSENKRUPP STEEL EURO AG