Electric heating – Metal heating – By arc
Patent
1983-11-15
1986-06-17
Paschall, M. H.
Electric heating
Metal heating
By arc
219121EM, 219121ED, 219121EU, 2504911, B23K 1500
Patent
active
045958190
ABSTRACT:
The two dimensional processing path along which the electron beam of a welder is to be deflected during a processing cycle is approximated by a sequence of points separated by predetermined distances from one another. The deflection signals for the beam are derived from analog signals having levels corresponding to the points, and interpolation there between. The rate of interpolation depends on the distance between the points and time intervals specified so as to create preselected beam velocities. Since a weld is improved when there is micromotion of the beam around the processing, a modulation path generator is also provided. Since the coordinates furnished by this modulation path generator are in a fixed coordinate system and the micromotion of the beam is relative to the processing path, a coordinate rotation is carried out before the modulation signals are superimposed upon the processing path deflection signals. For increased accuracy, the movement of the beam is controlled by a closed loop system in which the actual position of the gap to be welded is determined in a separate cycle, compared to the desired position and a corresponding error signal generated and stored. A correction signal corresponding to the error signal is then added onto the modulation signals prior to coordinate rotation in the next processing cycle.
REFERENCES:
patent: 3513285 (1970-05-01), Imura
patent: 3519788 (1970-07-01), Hatzakis
patent: 4390788 (1983-06-01), Hayashi et al.
patent: 4442361 (1984-04-01), Zasio
Institut fur Kerntechnik und Energiewandlung e.V.
Paschall M. H.
Teltscher Erwin S.
LandOfFree
Method and system for deflecting a focussed electron beam along 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 deflecting a focussed electron beam along , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for deflecting a focussed electron beam along will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2274570