Patent ID: 11904369
Assignee: NV BEKAERT SA
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A method of treating a metal wire by multiple reverse bending comprising the following steps:
providing an apparatus comprising a first roller having a first roller diameter, one or more intermediate rollers having intermediate roller diameters, and one exit roller having an exit roller diameter,
wherein the first roller, the one or more intermediate rollers, and the exit roller form a sequence of rollers,
wherein the first roller, the one or more intermediate rollers, and the exit roller each comprise a circumferential groove for receiving the metal wire, the circumferential groove being organized in one groove plane,
wherein the exit roller diameter is larger than the first roller diameter, and
wherein any one roller in the sequence of rollers has a roller diameter that is not smaller than a preceding roller in the sequence of rollers;
continuously providing the metal wire having a metal wire thickness and a metal wire width,
wherein the metal wire thickness is a smallest calliper size and the metal wire width is a largest calliper size when measured in all directions perpendicular to the metal wire, and
wherein a ratio of the metal wire thickness to the metal wire width is smaller than 10; and
running the metal wire through all or part of the sequence of rollers in a multiple reverse bending path from an entry roller to the exit roller,
wherein the entry roller is the roller of the apparatus that that first bends the wire,, wherein, the entry roller is selected such that a ratio of a diameter of the entry roller to the metal wire thickness is between 20 and 50.