Abstract

A metal sleeve including a metal body which surrounds an inner channel running between a proximal and a distal opening. The inner channel has at least one groove set back into the metal body, running in the longitudinal direction of the inner channel and stepped on both sides by a distal and a proximal front edge. The proximal front edge of the groove is produced by impact extrusion.

IPC Classes  ?

• F16C 3/02 - ShaftsAxles
• F16H 57/021 - Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
• B21K 21/12 - Shaping end portions of hollow articles
• B21K 21/08 - Shaping hollow articles with different cross-section in longitudinal direction, e.g. nozzles, spark-plugs
• B21K 21/16 - Remodelling hollow bodies with respect to the shape of the cross-section
• B21C 23/00 - Extruding metalImpact extrusion
• B21J 5/12 - Forming profiles on internal or external surfaces
• B21K 1/06 - Making machine elements axles or shafts
• B21C 23/18 - Making uncoated products by impact extrusion

Abstract

A method for producing a metal sleeve includes providing a first metal sleeve semi-finished product having a metal body. The metal body surrounds an inner channel. At least one groove is located in the metal body on the side of the inner channel. The first metal sleeve semi-finished product is pressed into a first die by means of a punch and in the process is formed by impact extrusion into the metal sleeve to be produced. The first die is designed such that a proximal front edge, which is spaced apart from the distal front edge and delimits the groove in the proximal direction, is formed in the metal body on the side of the inner channel. A metal sleeve includes a metal body which surrounds an inner channel running between a proximal and a distal opening. The inner channel has at least one groove set back into the metal body, running in the longitudinal direction of the inner channel and stepped on both sides by a distal and a proximal front edge. The proximal front edge of the groove is produced by impact extrusion. A method for producing a gearbox is provided.

IPC Classes  ?

• B21K 21/12 - Shaping end portions of hollow articles
• B21K 21/08 - Shaping hollow articles with different cross-section in longitudinal direction, e.g. nozzles, spark-plugs
• B21K 21/16 - Remodelling hollow bodies with respect to the shape of the cross-section
• B21C 23/00 - Extruding metalImpact extrusion
• B21J 5/12 - Forming profiles on internal or external surfaces
• B21K 1/06 - Making machine elements axles or shafts
• B21C 23/18 - Making uncoated products by impact extrusion
• F16H 57/021 - Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings