GB1337914A - Apparatus for machining the ends of tubes - Google Patents

Abstract

1337914 Machining tube ends VALLOUREC (USINES A TUBES DE LORRAINE-ESCAUT ET VALLOUREC REUNIES) 7 June 1972 [8 June 1971] 26432/72 Heading B3T Apparatus for machining the ends of tubes comprises a rotatable plate 1 on which are mounted tool carriers 4 and 5 for radial adjustment diametrically one on each side of the axis 2 of rotation of the plate, and two further tool supports 12 similarly positioned which are mounted on and pivotable about respective shafts 13a at right angles to the axis 2. The tool supports 12 carry roughing tools (not shown) and are pivotable on the shafts 13a between a first position in which the roughing tool is farthest from the surface of the plate 1 to a retracted position nearest the surface of the plate and behind the tool carrier 4 and 5 and in which the roughing tool is inoperative. The pivoting of the supports 12 is effected by fluid pressure means which is shown in the form of bellows 15 which are actuated to move a support into the first position and is subsequently actuated by a spring 20 to move the support into the retracted position. In operation the plate is rotated and displaced along the axis 2 by means (not shown) into an operative position adjacent a tube held stationary and coaxial with the axis 2 of the plate, the feed movement of the plate effecting engagement between selected tools on the plate to accurately machine the tube end.