DE102005017763B4 - Method for producing a profile bar - Google Patents

Abstract

Method for producing a profiled bar (1) from metal by means of a roll forming device (3) having form rollers (2) over which the strip material is guided,
characterized,
that the strip material from a coil or as uncircumcised molding material via a feed continuously to the individual stages of the roll forming device (3) supplied, reshaped and / or cut laterally and is cut only after the forming process to length and
that the profile formed with the aid of the forming rollers (2) is reshaped at the end of the forming process by forming tools (4).

Description

The The invention relates to a method for producing a profile bar made of metal with the aid of a forming roll having roll forming device, via the guided the strip material becomes.

A method for producing a metal profile bar has already been disclosed ( DE 197 49 902 A1 ), wherein the profile bar is formed from a strip material by means of a forming roll having roll forming device. The strip material is cut to its length to produce a variable in cross-section over its longitudinal profile bar before roll forming or during roll forming at the longitudinal edge edges according to the desired change in cross section of the profile bar.

From the DE 297 03 588 U1 a device for producing a hollow profile section by roll forming is known, wherein functional elements are introduced by joining processes in the hollow profile.

Further, from the scriptures US 4,020,666 and US 3,788,115 further roll forming devices are known, each of which describes embodiments of a conventional roll forming device.

Under consideration The lightweight construction requirement will increasingly be high strength carrier structures toughen used. These steels are usually limited formable. This also applies to side impact beams of Vehicles. Up to now it has been necessary to have new thermoforming tools for every new geometry use. Furthermore, the dimensional accuracy in the thermoforming process for high quality steels often unsatisfactory. It follows that for each new series a corresponding Development process is required.

Of the Invention is based on the object, a process for the preparation a profile bar of the type mentioned above to create that on low cost Way differently shaped profile bars qualitatively much better can be produced.

Is solved the task with the features of claim 1 according to the invention in that the strip material from a coil or as an uncut molding material over a feeding continuously the individual stages of the roll forming device supplied formed there and / or cropped laterally and only after the forming process to length is cut and that transformed using the forming rollers Profile formed by forming tools at the end of the forming process becomes.

hereby can on simple and inexpensive Way profile carrier like side impact beams of Motor vehicles with different shapes and profile lengths in Roll forming process for different lengths be prepared without requiring a special tool adaptation is.

With This manufacturing process can cost tools and thus manufacturing costs are saved. Furthermore, can be at Forming process to achieve smaller radii and better tolerances.

All in all let yourself This also reduces the development time for the production of profile beams.

A additional possibility is according to a development the invention that the mold from an upper and a bottom molding consists, at the end of the forming process on the profile bar can be placed and this nachformen.

Further Advantages and details of the invention are in the claims and explained in the description and shown in the figures.

It demonstrate:

1 a profiled support for a motor vehicle formed by means of a roll forming device,

2 a sectional view of a roll forming device,

3 the molded after the roll forming process side impact beam with two molds,

4 a finished molded side impact beam.

In 1 is a profile bar 1 shown, which is used as a side impact beam for motor vehicles. The profile bar 1 is using a roll forming device 3 to the in 1 formed finished profile shown transformed.

For the method of manufacturing the profile bar 1 made of metal, this is unwound from a coil, with the help of numerous Formrollen 2 formed into a desired profile and cut to the desired length at the end of the molding process. With the form rollers 2 Different wall thicknesses and geometries can be produced. The special design receives the profile bar 1 After passing through various forming processes not shown in the drawing. When the forming process is complete, the profile bar becomes 1 cut to length with the help of other shaping tools. In this way, different lengths can be produced as needed without being connected to the roll forming device 3 Changes need to be made.

Following the described molding process, the profile bar 1 with the help of other molds 4 especially in the final area to the final form ( 4 ) to be adapted to the Fahrzeugkonfigurie. The profile bar 1 can be added both inline and offline. Furthermore, it is possible with this method to create different hole patterns by quick change sets or to use controllable cutting operations.

The mold 4 consists of an upper one 4.1 and a lower mold 4.2 , After the post-forming process, the work process is completed. With this manufacturing process tooling costs and thus manufacturing costs can be saved. Furthermore, smaller radii and better tolerances can be achieved during the molding process, and overall the development time for the production of profile carriers can be reduced.

1

profile bar

2

forming roller

3

Roll form equipment

4

mold

4.1

upper mold

4.2

lower mold

Claims (2)

Method for producing a profile bar ( 1 ) made of metal using a form roller ( 2 ) having roll forming device ( 3 ), over which the strip material is guided, characterized in that the strip material from a coil or as untrimmed molding material via a feed device continuously to the individual working stages of the roll forming device ( 3 ), where it is reshaped and / or trimmed laterally and is cut to length only after the forming process and that this is done by means of the forming rollers ( 2 ) formed profile at the end of the forming process of forming tools ( 4 ) is reformed. Method according to claim 1, characterized in that the molding tool ( 4 ) from an upper ( 4.1 ) and a lower molding ( 4.2 ), which at the end of the forming process on the profile bar ( 1 ) can be placed and this nachformen.