Method and system for determining weld bead quality

Details Method and system for determining weld bead quality Method and system for determining weld bead quality

1998-12-04

2000-02-15

Shaw, Clifford C.

Metal fusion bonding

Process

With measuring, testing, indicating, inspecting, or...

21913001, B23K 9095

Patent

active

060242736

ABSTRACT:
A method for determining the quality of a weld bead includes producing a weld bead along a work surface during a welding process and scanning the weld bead with a vision system to obtain positional data points for defining a weld bead profile. The weld bead has a weld toe zone or region, which is formed at the interface between the weld bead and the work surface. A curve fit is determined for the weld bead profile bases on the positional data points obtained by the laser scan vision system. The toe radius is derived bases on the curve fit and is then compared to a first predetermined limit and a second predetermined limit, greater than the first predetermined limit, to determine the quality of the weld bead. If the toe radius is less than the first predetermined limit or greater than the second predetermined limit, the welding process is modified to produce a weld bead with a toe radius that falls within the desired range. In one embodiment the weld toe radius is determined from first and second derivations of a numerical relationship representative of the curve fit. In another embodiment the curve fit is compared to a plurality of curves to find a corresponding match and the weld toe radius is determined from the matching

REFERENCES:
patent: 4634879 (1987-01-01), Penney
patent: 4724302 (1988-02-01), Penney et al.
patent: 4767911 (1988-08-01), Maram et al.
patent: 4806732 (1989-02-01), Abshire et al.
patent: 4920249 (1990-04-01), McLaughlin et al.
patent: 5264678 (1993-11-01), Powell et al.
patent: 5275327 (1994-01-01), Watkins et al.
patent: 5283418 (1994-02-01), Bellows et al.
patent: 5371339 (1994-12-01), Dillet et al.
patent: 5510596 (1996-04-01), Xu et al.
patent: 5533146 (1996-07-01), Iwai
patent: 5534676 (1996-07-01), Rinaldi et al.

Affiliated with

Also associated with

Rating

Method and system for determining weld bead quality does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and system for determining weld bead quality, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for determining weld bead quality will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1899133