Method for producing bent spring rails from an endless spring band
AssigneeValeo Systèmes d'Essuyage
InventorsOliver Lenzen, Gerald Pachur, Oliver Blumenstock
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Abstract
The invention relates to a method for producing bent spring rails from an endless spring band. The method is characterized by the following steps: continuous bending of a section of spring band; cutting the bent section of spring band into a spring rail; discontinuous reverse bending to reduce the internal stresses of the bent, cut-to-length spring rail by subjecting the spring rail to at least one reverse bending force and/or heat-treating the cut-to-length spring rails, the heat treatment being a low-temperature treatment in this case, preferably at a temperature of less than 200 *C.
Claims26
A method for producing bent spring rails from a continuous spring strip, characterized by the steps of:
- continuous bending of a section of spring steel strip;
- cutting to length of the bent section of spring steel strip to form a spring rail;
- and
- after cutting, reverse bending of the spring rail to reduce internal stress in the bent and cut-to-length rail by subjecting the spring rail to at least one reverse bending force.
A method for producing bent spring rails from a continuous spring strip, characterized by the steps of:
- continuous bending of a section of spring steel strip;
- cutting to length of the bent section of spring steel strip to form a spring rail;
- and
- after the cutting step, reverse bending of the spring rail to reduce internal stress in the bent and cut-to-length rail by subjecting the spring rail to at least one reverse bending force independent of the previous continuous bending step.
Dependencies are inferred from the claim text.