Patent ID: 11919101
Assignee: AUGUST STRECKER GMBH & CO. KG ELEKTRO-SCHWEISSMASCHINEN FABRIK
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 6:
7. A method for double-upset resistance butt-press welding of workpieces (3, 4), comprising:
a) inserting the workpieces (3, 4) having ends (13, 14) and defining end cross sections at the ends that are to be joined into respective first and second clamping members of a butt-welding device,
b) bringing to a welding site defining a joining plane the ends (13, 14) of the workpieces (3, 4) that are to be joined,
c) determining with at least one sensor at least one geometric dimension of each of the workpieces (3, 4) selected from the group consisting of: diameter, width, height, and a combination of diameter, width or height, in the joining plane or substantially parallel to the joining plane before butt welding,
d) butt welding the end cross sections of the ends (13, 14) of the workpieces (3, 4) that are to be joined,
e) upsetting the weld (11) of the butt-welded workpiece (3, 4) at an elevated temperature in order to enlarge the cross section of the weld,
f) reducing the enlarged cross section of the weld to a prescribed end cross section of the workpiece (3, 4) with at least one deburring tool (5, 6), and
g) actuating the at least one deburring tool (5, 6) as a function of the geometric dimension(s) of the workpieces (3, 4) that are to be joined so that deburring is performed from a side of the one of the workpieces (3, 4) determined to have a larger geometric dimension in the joining plane or substantially parallel to the joining plane before butt welding than the other one of the workpieces.