Method of manufacturing a screw pump without undercut and/or screw pump which can have lubrication channels on at least one of the drive screw and running screws
AssigneeSkf Lubrication Systems Germany GmbH
InventorsMichael Schwaiger, Juergen Kreutzkaemper, Arno Poetzsch, Holger Schmidt
Life of this patent
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Abstract
A screw pump for transporting a fluid, with a drive spindle having a drive spindle profile and with at least one running spindle having a running spindle profile, the running spindle engages with its running spindle profile at least partially in the drive spindle profile of the drive spindle, the drive spindle profile and/or the running spindle profile is formed as a rolled profile, and a method for producing a spindle for such a screw pump, and a method for producing a groove in such a spindle are disclosed.
Claims11
A method for manufacturing a screw pump for transporting a fluid, the method comprising the steps of:
- providing a drive spindle having a drive spindle profile,
- providing a running spindle,
- rolling a running spindle profile into the running spindle such that the running spindle profile is formed without undercut,
- simultaneously with the rolling of the running spindle profile into the running spindle also forming a lubricant groove in the running spindle, and
- wherein the running spindle engages with its running spindle profile at least partially in the drive spindle profile of the drive spindle.
Dependencies are inferred from the claim text.