Metal fusion bonding – Process – With condition responsive – program – or timing control
Patent
1979-04-16
1980-09-23
Husar, Francis S.
Metal fusion bonding
Process
With condition responsive, program, or timing control
219 60R, 219 732, 21912511, 21912512, 228 7, 228 41, 228 48, 228225, B23K 912
Patent
active
042238242
ABSTRACT:
An apparatus for multi-bead welding of two rotating workpieces comprises a flat filler wire holder which can be introduced into the gap between the workpieces and which is periodically pivoted forth and back at substantially constant angular velocity between the two sides of the gap. The pivoting is effected by a motor which is started when a cam rotating in synchronism with the workpieces actuates a stationary signal generator. The cam is provided on a cam disc which is driven through a friction coupling and which, on each revolution, is arrested by a pawl during a period determined by an adjustable timer. The timer is started when the cam actuates a stationary signal generator mounted shortly in advance of the pawl, and after the expiry of the period of the timer the pawl is retracted so that the rotation of the cam disc can continue. The pawl is again advanced to operative position when the cam actuates the first mentioned signal generator.
REFERENCES:
patent: 4086690 (1978-05-01), Bernasconi
patent: 4175227 (1979-11-01), Kasper
patent: 4179059 (1979-12-01), Chang et al.
Burmeister & Wain A/S
Husar Francis S.
Ramsey Kenneth J.
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