Gear
AssigneeMiba Sinter Austria GmbH
InventorHorst ROESSLER
Life of this patent
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Abstract
A gear from a sintering powder has a first track and a second track, wherein the first track is a first cylindrical gear toothing with first teeth and with a first diameter and the second track is a second cylindrical gear toothing with second teeth and with a second, in comparison to the first diameter of the first track larger, diameter, and wherein depressions are configured on the first teeth of the first track in a transition region adjoining the second track.
Claims15
A gear (1) from a sintering powder with a first track and a second track, wherein the first track is a first cylindrical gear toothing (4) with first teeth (6) and with a first diameter (7) and the second track is a second cylindrical gear toothing (5) with second teeth (9) and with a second, in comparison to the first diameter (7) of the first track larger, diameter (10), wherein depressions (22) are configured on the first teeth (6) of the first track in a transition region (21) adjoining the second track.
A method for powder-metallurgically producing a gear (1) from a sintering powder with a first track and a second track, wherein a first cylindrical gear toothing (4) with first teeth (6) and with a first diameter (7) is produced as the first track and a second cylindrical gear toothing (5) with second teeth (9) and with a second, in comparison to the first diameter (7) of the first track larger, diameter (10) is produced as the second track, comprising the steps:
- pressing the sintering powder to a green compact;
- sintering the green compact to the sintered gear (1), rolling at least the track with the first diameter (7), wherein the rolling generates depressions (22) on the first teeth (6) of the first track in a transition region (21) adjoining the second track.
A tool (30) for rolling a gear (1) with a first track and a second track, wherein the first track is a first cylindrical gear toothing (4) with first teeth (6) and with a first diameter (7) and the second track is a second cylindrical gear toothing (5) with second teeth (9) and with a second, in comparison to the first diameter (7) of the first track larger, diameter (10), wherein the tool (30) has a tool body (32) having a first section (33) and a second section (34) that adjoins the first section (33) in an axial direction (24), wherein the first section (33) and the second section (34) are provided for rolling the first track and the second section (34) has, at least partially, a larger diameter than the first section (33).
Dependencies are inferred from the claim text.