Hi Gunter,
perhaps this method will give you what you want.
1) create 2d front profile and side profile as shown in photo.
2) extrude.
3) boolean side profile.
4) fillet inner of ring.
5) fillet outer and add fillet set to taper down to head.
6) remove these fillet surfaces and then loft to give chamfered face.
7) fillet these edges as required.
Hope this helps.
Cheers
Barry