Patent · US Expired

Machine for machining tubes having helical weld seams

US4129062A · kind A · utility

7Cited by

2References

7Claims

0Family size

Assignee

Bergmann & Steffen OhG · DE

Inventors

Klaus Bergmann · Lugano, CH
Gunther B. H. Steffen · Bielefeld, DE
Herbert Monkemoller · Bielefeld, DE

Key dates

Filing date	Jan 30, 1976
Grant date	Dec 12, 1978
Priority date	—
Expiry date	Jan 30, 1996

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T409/304424
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A method of machining a tube having a helical weld seam including internal and external weld beads in which the internal and external weld seam beads of the tube are simultaneously reduced by machining and a machine for carrying out said method comprising a machine bed, at least one tube bearing means mounted on the machine bed and for supporting the tube, and power-driven tools mounted so that, in use, one tool is located within the tube and one tool located outside the tube, and adapted to be displaceable in dependence upon the helical weld seam in the longitudinal extension of the tube and following the weld seam; said tools in use thereby opposing each other on the sides of the wall of the tube.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.