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US 6,332,271 B1Granted
Method for making rotors
AssigneeJoh. Heinr. Bornemann GmbH
InventorKurt Hampel
Life of this patent
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Abstract
A method for making rotors for screw-type machines with a plunge-cut turning method in which an approximately rectangular groove is formed approximately at a center of a work piece with trilateral machining, a groove is cut radially deeper by trilateral machining until a predetermined groove depth has been reached, the profile flanks are shaped by bilateral machining, and the groove depth is increased with a recessing tool.
Claims3
A method for making rotors for screw-type machines, comprising the steps of:
- (a) forming an approximately rectangular groove approximately at a center of a work piece with trilateral machining;
- (b) cutting the groove radially deeper by trilateral machining until a predetermined groove depth has been reached;
- (c) shaping profile flanks by bilateral machining;
- (d) increasing the groove depth with a recessing tool;
- and
- (e) repeating steps (a) to (d) until a profile geometry is achieved.
3 more elements
Dependencies are inferred from the claim text.