Method and apparatus for machining a groove around a tubular mem

Details Method and apparatus for machining a groove around a tubular mem Method and apparatus for machining a groove around a tubular mem

1985-08-07

1987-03-10

Husar, Francis S.

Turning

Process of turning

82 4C, B23B 500

Patent

active

046482946

ABSTRACT:
Machine for machining a groove round the external periphery of the base of a nozzle and notably enabling the back of a weld to be reworked from the outside when a nozzle is being installed on a nuclear reactor vessel.
The machine comprises a cylindrical drum (5) in two parts (41, 45) equipped with locking and position-holding shoes (6), a machining head driven in rotation by means of a gear ring (9) and a pinion (17). The cylindrical drum (5, 41, 45) is locked and held in position with respect to the nozzle (1) by means of an intermediate coupling ring (23) secured by screws (31) to the nozzle (1) and by the locking shoes (6) fixed to hydraulic rams (47).

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