Method and Device for Producing a Knurl on the Suface of a Workpiece
AssigneeSchaeffler KG
InventorChristoph Schroder
Life of this patent
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Abstract
A method and a device to produce a knurl (2) on a surface or part of a metallic disk (1) or a friction wheel which are produced from sheet metal (13) through a drawing process are provided. The structure (7) of the knurl (2) is stamped or rolled onto the sheet metal prior to or after forming the sheet metal (13), in order to prevent sharp-edged knurl structures. The structure is produced with the aid of a stamping element (6) which is provided with the structure (7) or by a knurling cylinder (9) which is also provided with the structure (7), which can be pressed against the surface of the sheet metal (13) of the disk (1) or the friction wheel.
Claims12
Method for producing a knurl on a surface of a part of a metallic guide pulley or a metallic friction wheel, which are made from sheet metal in at least one shaping process, method of comprising imprinting or rolling the knurl, which has a geometrically shaped or a random or arbitrary structure into the sheet metal before or after a first shaping of the sheet metal.
Device for producing a knurl on a surface of a part of a metallic guide pulley or a metallic friction wheel, which are produced from sheet metal at least one shaping process, comprising a press die or a knurling cylinder that is pressable against a surface of the sheet metals outer contours of the press die or knurling cylinder are shaped as the knurl.
Dependencies are inferred from the claim text.