Electric heating – Metal heating – Cutting or disintegrating
Patent
1990-07-02
1993-07-06
Evans, Geoffrey S.
Electric heating
Metal heating
Cutting or disintegrating
219 692, B23K 900, B23H 100, B23H 1100
Patent
active
052256456
ABSTRACT:
An electron discharge machining tool (10) for removal of conductive material from a workpiece such as a plug (28) in a nuclear steam generator tube (26) is an end effector connected to a remotely operated manipulator arm by a mount (56). A piston (47) drives a hollow conductive rod (44) with a graphite electrode cutter (30) in reciprocating motion through receptacle (14) having a restrictive drain (37) and containing deionized water. The reciprocation of rod (44) is controlled by power supply (50) sensing the electrical potential and signalling valve (48) which controls hydraulic flow in conduits (54a, 54b) communicated to opposite sides of the piston (47). A TV camera (32) and a light (34) mounted behind a lens (36) are used to monitor the machining.
REFERENCES:
patent: 2996638 (1961-08-01), Webb
patent: 4467167 (1984-08-01), Oizumi et al.
patent: 4584452 (1986-04-01), Zafred
patent: 4672162 (1987-06-01), Burns et al.
patent: 4720898 (1988-01-01), Calfo et al.
patent: 4804814 (1989-02-01), Southerland et al.
patent: 4916282 (1990-04-01), Chamming s et al.
patent: 4937675 (1990-06-01), Starceski et al.
patent: 5086201 (1992-02-01), Grypezynski et al.
Patent Abstracts of Japan, vol. 10, No. 388, Dec. 1986 of Japan Patent document 61-178,122.
Clark, Jr. Donald E.
Overbay Mark A.
Combustion Engineering Inc.
Evans Geoffrey S.
Mulholland John H.
LandOfFree
Electron discharge machining tool does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electron discharge machining tool, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electron discharge machining tool will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1691719