US 2023/0398598 A1Published application

Forming method and forming machine for producing a helical toothing of a cylindrical workpiece by extrusion

AssigneeFELSS Systems GmbH

InventorsMax Olaf JANDT, Maximilian LUDWIG, Nadezda MISSAL, Serjosha HEINRICHS, Sascha VOEGELE

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Abstract

In the context of a forming method for producing a helical toothing of a cylindrical workpiece by extrusion, a relative movement of a forming tool and of a workpiece blank carried out in a peripheral direction of the forming tool and of the workpiece blank is superimposed on an axial forming movement of the forming tool and of the workpiece blank. Due to a forming relative movement of the forming tool and of the workpiece blank resulting from the mutual superimposition of the axial forming movement and the forming movement in the peripheral direction, the helical toothing of the workpiece is produced on the workpiece blank, in that the forming tool engages, with a shaping helical toothing, in the workpiece blank during the resulting forming relative movement. A forming machine is designed to carry out the aforementioned method.

Claims15

Dependent claims

A forming method for producing a helical toothing (21, 24) of a cylindrical workpiece by extrusion, the method comprising:

moving a forming tool (3, 25) with a shaping helical toothing (16, 26), and a cylindrical workpiece blank (4) relative to one another in an axial direction (6) with an axial forming movement,
producing the helical toothing (21, 24) of the workpiece on the workpiece blank due to the axial forming movement of the forming tool (3, 25) and of the workpiece blank (4), wherein the forming tool (3, 25) engages, with the shaping helical toothing (16, 26), in the workpiece blank (4) during the axial forming movement of the forming tool (3, 25) and of the workpiece blank (4), and
superimposing a relative movement of the forming tool (3, 25) and of the workpiece blank (4) carried out in a peripheral direction (7) of the forming tool (3, 25) and of the workpiece blank (4) on the axial forming movement of the forming tool (3, 25) and of the workpiece blank (4) as a forming movement of the forming tool (3, 25) and of the workpiece blank (4) in the peripheral direction (7), wherein the helical toothing (21, 24) of the workpiece is produced on the workpiece blank (4) due to a forming relative movement of the forming tool (3, 25) and of the workpiece blank (4) resulting from the mutual superimposition of the axial forming movement and the forming movement in the peripheral direction, wherein the forming tool (3, 25) engages, with the shaping helical toothing (16, 26), in the workpiece blank (4) during the resulting forming relative movement of the forming tool (3, 25) and of the workpiece blank (4).

A forming machine for producing a helical toothing (21, 24) of a cylindrical workpiece by extrusion, comprising

a forming tool (3, 25) having a shaping helical toothing (16, 26),
a feed drive (8), by means of which the forming tool (3, 25) and a cylindrical workpiece blank (4) can be moved relative to one another in an axial direction (6) with an axial forming movement, wherein the helical toothing (21, 24) of the workpiece is able to be produced on the workpiece blank (4) due to the axial forming movement of the forming tool (3, 25) and of the workpiece blank (4), wherein the forming tool (3, 25) engages, with the shaping helical toothing (16, 26), in the workpiece blank (4) during the axial forming movement of the forming tool (3, 25) and of the workpiece blank (4),
and
a machine control (18) configured to control the the feed drive (8),
wherein a rotary drive (9) is provided, by means of which the forming tool (3, 25) and the workpiece blank (4) are movable relative to one another in a peripheral direction (7) of the forming tool (3, 25) and of the workpiece blank (4), with a forming movement in the peripheral direction (7),
wherein the rotary drive (9) is controllable by the machine control (18), and
wherein the machine control (18) is configured to control the feed drive (8) and the rotary drive (9) in such a way that the forming movement of the forming tool (3, 25) and of the workpiece blank (4) in the peripheral direction (7) is superimposed on the axial forming movement of the forming tool (3, 25) and of the workpiece blank (4), wherein the helical toothing (21, 24) of the workpiece is able to be produced on the workpiece blank (4) due to a forming relative movement of the forming tool (3, 25) and of the workpiece blank (4) resulting from the mutual superimposition of the axial forming movement and the forming movement in the peripheral direction (7), wherein the forming tool (3, 25) engages, with the shaping helical toothing (16, 26), in the workpiece blank (4) during the resulting forming relative movement of the forming tool (3, 25) and of the workpiece blank (4).

4 more elements

Dependencies are inferred from the claim text.