Rolling mills

Details Rolling mills Rolling mills

1981-06-02

1983-06-21

Husar, Francis S.

Metal deforming

By use of roller or roller-like tool-element

Plural roller-couples

72205, 72249, B21B 3908, B21B 3500

Patent

active

043888194

ABSTRACT:
In a multi-stand stretch-reducing tube-rolling mill, the stands at the entry end forming a first group are driven from a main motor and an auxiliary motor and the remaining stands forming a second group are driven from the main motor and a separate auxiliary motor, the corresponding rotational speeds derived from the main motor and one or other of the auxiliary motors being added by means of a planetary gear in a summing transmission. A single stand between the two groups can be driven from the main motor only. The separate auxiliary motor at the entry end enables control over the tube elongation (or compression) to be effected over a shorter tube length, and thereby more accurately.

REFERENCES:
patent: 3962894 (1976-06-01), Noe et al.
patent: 4002048 (1977-01-01), Pozsgay

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