Toothed disc and method for manufacturing the toothed disc
AssigneeMAGNA Powertrain AG & Co KG
InventorJohn Sabo
Life of this patent
Estimating the term…
Abstract
A novel method of manufacturing a toothed disc is taught wherein the teeth can be cold formed to a relatively high set of tolerances in a relatively time-efficient manner. A cold-formed disc blank with an annular thickened ring about its periphery is forced through a set of tooth forming rollers which engage the annular thickened ring. As the blank is forced through the set of rollers, the rollers cold forming tooth structures in the annular ring. In some circumstances, the tooth structure can be a final desired tooth profile and in other circumstances, the disc blank may be forced through two or more different sets of tooth forming rollers, each set of tooth forming rollers contributing to the forming of the final, desired tooth profile.
Claims16
A method of forming a toothed disc, comprising the steps of:
- providing a disc blank disposed about a disc axis;
- and
- forming a plurality of teeth simultaneously along a periphery of the disc blank;
- the forming step including engaging the periphery of the disc blank with a plurality of tooth forming rollers simultaneously, and the tooth forming rollers each rotating about a respective axis which is not parallel to the disc axis.
A toothed disc, comprising:
- a web portion;
- an annular ring surrounding the web portion and presenting an outer periphery, the annular ring having a thickness greater than the thickness of the web portion;
- and
- a plurality of teeth extending radially into the annular ring;
- the toothed disc produced by a method comprising the steps of:
- providing a disc blank disposed about a disc axis;
- and
- forming the plurality of teeth simultaneously along the annular ring;
- the forming step including engaging the annular ring of the disc blank with a plurality of tooth forming rollers simultaneously, and the tooth forming rollers each rotating about a respective axis which is not parallel to the disc axis.
A system for manufacturing a toothed disc, comprising:
- a first set of tooth forming rollers for forming a plurality of teeth simultaneously in a disc blank disposed about a disc axis;
- and
- the tooth forming rollers each rotating about a respective axis which is not parallel to the disc axis.
Dependencies are inferred from the claim text.