Machine tool

Details Machine tool Machine tool

1981-05-05

1983-06-14

Wilhite, Billy J.

Presses

Reciprocating press construction

72449, 83631, 100270, 100290, B30B 118, B30B 1504

Patent

active

043876358

ABSTRACT:
A machine tool comprising a portal stand having a number of, preferably four, screw pillars and a moveable yoke driven and guided along the screw pillars by means of nuts preferably roller nuts, in the yoke. Tools, machining devices or the like can be attached to the yoke. The nuts are driven simultaneously by a drive motor through a drive shaft extending therefrom. A very good parallel guiding of the yoke is achieved despite uneven loads. When the power demand is high, for example during heavy pressings, an auxiliary cylinder is provided, the piston rod of which is fixed to the yoke.

REFERENCES:
patent: 327297 (1885-09-01), McGovern
patent: 859637 (1907-07-01), Adams
patent: 1503575 (1924-08-01), Williams
patent: 1512279 (1924-10-01), Diehl
patent: 1819704 (1931-08-01), Friz
patent: 2148704 (1939-02-01), Merritt
patent: 2357508 (1944-09-01), Ernst
patent: 2896529 (1959-07-01), Shiokawa
patent: 3079856 (1963-03-01), Swartz
patent: 3400625 (1968-09-01), Wrona

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