Apparatus and method for profiling workpieces by cold forming
AssigneeErnst Grob AG
InventorsDaniel Dériaz, Ekrem Kapkin, Jan Schmid
Life of this patent
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Abstract
A workpiece executes a rotation movement about a longitudinal axis and is machined by a tool in a multitude of reshaping engagements, in which an active region of the tool comes into contact with the machining region. The tool is held by a tool holder. The tool holder is mounted in an orbiting body so as to be rotatable about a rotation axis and is driven to carry out a rotating movement about the rotation axis, and is driven to carry out an orbiting movement by the orbiting body. Rotation movement of the workpiece is synchronised with the orbiting movement of the tool holder and the rotating movement of the first tool holder is synchronised with the orbiting movement of the tool holder.
Claims18
A method for manufacturing a product body having a profiling, by way of cold reshaping a workpiece comprising a longitudinal axis and, a machining region and, in the machining region, an outer surface, wherein the profiling is to be produced in the outer surface, the method comprising the steps of:
- executing a rotation movement of the workpiece about the longitudinal axis via a first drive device;
- machining the workpiece by a first tool in a multitude of reshaping engagements that are carried out successively, in each of the reshaping engagements, an active region of the first tool coming into contact with the machining region;
- holding the first tool by a first tool holder, wherein:
- the first tool holder is mounted in an orbiting body, so as to be rotatable about a rotation axis of the first tool holder, driving the first tool holder via a second drive device so that the first tool holder carries out a rotating movement about the rotation axis, wherein azimuthal (ly), which is used hereinafter, is defined by the rotation axis;
- and
- the orbiting body executing a rotation about an orbiting body axis which is spaced from the rotation axis of the first tool holder and driving the first tool holder so that the first tool holder carries out an orbiting movement via a third drive device;
- synchronizing the rotation movement of the workpiece with the orbiting movement of the first tool holder via a first synchronization device;
- and
- synchronizing the rotating movement of the first tool holder via a second synchronization device with the orbiting movement of the first tool holder.
An apparatus for manufacturing a product body having a profiling, by way of cold reshaping a workpiece, wherein the apparatus comprises:
- a workpiece holder that is rotatable about a longitudinal axis of the workpiece holder, for holding the workpiece;
- a first drive device that rotates the workpiece holder about the longitudinal axis;
- an orbiting body;
- a first tool holder for holding a first tool, wherein the first tool holder is mounted in the orbiting body, so as to be rotatable about a rotation axis of the first tool holder;
- a second drive device that rotates the first tool holder about a rotation axis of the first tool holder;
- a third drive device that rotates the orbiting body about an orbiting body axis which is spaced from the rotation axis of the first tool holder by way of which the first tool holder is drivable to carry out an orbiting movement;
- a first synchronisation device that synchronizes rotational movement of the workpiece holder with the orbiting movement of the first tool holder;
- and
- a second synchronisation device that synchronizes rotational movement of the first tool holder with the orbiting movement of the first tool holder.
Dependencies are inferred from the claim text.