Method and apparatus for making a product by spinning

Details Method and apparatus for making a product by spinning Method and apparatus for making a product by spinning

B - Operations, Transporting

21

D

B21D 22/14 (2006.01) B21D 22/16 (2006.01)

Patent

CA 2189900

Method and apparatus for spinning a product, wherein a metal plate which may be preshaped or not, is deformed on a rotating chuck by a forming roller into a hollow product with a wall thickness. The shape of the chuck is determined and is stored in a memory of a control unit as a series of successive points. The control unit moves the forming roller according to a path corresponding with the shape of the chuck. This path is determined by the stored shape of the chuck with a desired wall thickness of the product added thereto. The metal plate is deformed by moving the forming roller according to the thus determined path. In each point of the stored shape of the chuck, the control unit determines a tangent line of the chuck shape at the location of this point and adds the desired wall thickness to the wall thickness at the location of this point accor- ding to a line perpendicular to the tangent line to calcu- late the path of the forming roller.

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