Method of and an arrangement for producing threads
AssigneeWilhelm Fette GmbH
InventorsEberhart Krueger, Helmut Kunsken
Life of this patent
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Abstract
An axial thread roll head is used for producing threads on workpieces, arranged on a rotary disk of a numerically controlled automatic lathe and has two threaded rolls which, after rolling of a thread, are withdrawn in the same direction transversely to a workpiece with constantly retained opposite distance from the workpiece tangentially relative thereto.
Claims7
A method of producing threads on workpieces, comprising the steps of providing an axial-type thread rolling head which has two thread rolls with a plurality of discrete annular grooves and axes inclined relative to one another, and is arranged on a turret of a numerically controlled automatic lathe;
- bringing the thread rolling head into a rolling position by moving in transverse direction with the thread rolls being brought in a position above a center line of the workpiece;
- rolling a thread by axial displacement of the thread rolls relative to a workpiece;
- and subsequently withdrawing the thread rolls from the workpiece in tangential direction by means of the thread rolling head being moved back transversely from the workpiece with constantly retained opposite distance of the thread rolls to one another.
An arrangement for producing threads on workpieces, comprising an axial-type thread rolling head provided with two thread rolls which have a plurality of discrete annular grooves and axes inclined relative to one another, and arranged on a turret of a numerically controlled automatic lathe;
- means for bringing the thread rolling head into a rolling position by moving in transverse direction with the thread rolls being brought in a position above a center line of the workpiece, and displacing said threaded rolls axially relative to a workpiece so as to roll a thread on the latter;
- means for subsequently withdrawing said thread rolls from the workpiece in tangential direction by means of the thread rolling head being moved back transverse from the workpiece with constantly retained opposite distance of the thread rolls to one another;
- and means for arranging said threaded roll head on a turret of an automatic lathe.
Dependencies are inferred from the claim text.