Method and device for producing an internally and externally toothed pot-shaped sheet metal part using a forming head

A method using a forming device for producing a toothed pot-shaped sheet metal part having teeth extending toward a pot central axis, comprising:

• inserting a pot-shaped sheet metal part into a die,
• then, by relative movement between the pot-shaped sheet metal part and a first forming head comprising first forming bodies on an outer circumference thereof, performing a forming operation by rolling a profile onto the pot-shaped sheet metal part by the first forming bodies applied to the pot-shaped sheet metal part to apply alternating internal and external gear teeth to the pot-shaped sheet metal part, radially from an inside area toward an outside periphery of the sheet metal part, and
• wherein the first forming bodies roll along an inner circumference of the pot-shaped sheet metal part in a direction of the pot central axis, and completely move through the pot-shaped sheet metal part so that the first forming bodies exit back out of the pot-shaped sheet metal part thereby forming the toothed pot-shaped sheet metal part,
• wherein a second forming head having cassettes acts oriented from the outside toward the inside on the pot-shaped sheet metal part, the second forming head comprising second forming bodies are oriented radially inward on an outer circumference of the pot-shaped sheet metal part, and
• wherein, introducing, a ring-shaped die between an outer circumference and an inner circumference of the pot-shaped sheet metal part to produce a double-walled pot-shaped sheet metal part, to roll gear teeth onto the outer circumference and gear teeth onto the inner circumference of the pot-shaped sheet metal part while using a combination of the first and second forming heads.

A device for producing a toothed pot-shaped sheet metal part having teeth extending toward a pot center axis, comprising:

• a die into which an un-toothed pot-shaped sheet metal part is inserted, and
• forming bodies configured to be applied to the un-toothed pot-shaped sheet metal part by a relative movement between the un-toothed sheet metal part and a forming head provided with the forming bodies on an outer circumference thereof, the forming bodies being arranged and oriented radially outside on the forming head to roll along an inner circumference of the un-toothed pot-shaped sheet metal part in a direction parallel to the pot center axis, and configure to create alternating internal and external gear teeth on the un-toothed pot-shaped sheet metal part, the forming bodies being configured to completely pass through the un-toothed pot-shaped sheet metal part so that the forming bodies exit from the un-toothed pot-shaped sheet metal part to form the toothed pot-shaped sheet metal part, and
• a pressure ring or another pressure element to form gear teeth on the un-toothed pot-shaped sheet metal part, the gear teeth being conical in a longitudinal direct and configured to exert a pressure oriented in an axial direction on cassettes containing the forming bodies during a downward stroke of the forming device, wherein the cassettes comprise conically beveled back plates configured to move radially inward on conically beveled guide surfaces of a stop bushing to provide a continuous and/or step-by-step adjustment of a radial forming depth of the cassettes.