| 摘要 |
1. Machine for the hot forming of the different successive working stages, comprising the cutting of the hole and the forming of the collar necessary for the obtention of collars in convex hemispherical, elliptical bottoms or other similar pieces, to which collars, tubings flanges or tubes are connected by welding, said machine comprising a rotating plate (5) on which the working piece to be furnished with a collar is immobilized, characterized in that said rotating plate is supported by a working piece support carriage (3) which is mobile in translation on a platform (1) in order to move said piece between a charging station (8, 10) situated at the end of the platform and different working stations consisting in a swivelling secondary frame (26) which carries the material (31, 36) necessary for the cutting of the hole previous to the forming of the collar and the local heating of the rim of said hole, as well as for the dressing and the bevelling of the collar once it is formed, and in principal swivelling frame (11) carrying the material (18) necessary for the hot forming of the collar.
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