Metal deforming – By use of roller or roller-like tool-element – With tool inside hollow work
Patent
1984-11-30
1987-01-27
Larson, Lowell A.
Metal deforming
By use of roller or roller-like tool-element
With tool inside hollow work
72250, 72451, 82 39, B21B 2502
Patent
active
046386556
ABSTRACT:
A mandrel rod with or without rolled tubes thereon is held by four guide structures, two arranged above and two below with respect to the axis of rolling, and each being arranged on a lever, these levers are arranged in pairs to both sides of the rolling axis, and they are particularly interconnected and connected to a common drive to permit common radial retraction of the guide structure; these guide structures have basically three different positions, one of full retraction permitting a mandrel rod with rolled tubes thereon to be removed by lifting while simultaneously a fresh mandrel rod is placed into the rolling axis from below; in a second position of the guide structures they engage a mandrel rod in the rolling axis, and in the third position they form-fittingly engage a hollow on the mandrel rod in the rolling axis.
REFERENCES:
patent: 2263744 (1941-11-01), Smith
patent: 3101015 (1963-08-01), Schuetz
patent: 3348399 (1967-10-01), Prieur
patent: 3722246 (1973-03-01), Passoni
patent: 4295396 (1981-10-01), Hasslauer
Nickel Wilhelm
Schirmag Klaus-Peter
Sebastian Wilhelm
Katz Steve
Larson Lowell A.
Mannesmann AG
Siegemund Ralf H.
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