Metal deforming – By use of 'flying tool' engaging moving work – Including orbitally-moving tool-face
Patent
1989-01-30
1990-06-26
Larson, Lowell A.
Metal deforming
By use of 'flying tool' engaging moving work
Including orbitally-moving tool-face
72393, B21D 3920
Patent
active
049361309
ABSTRACT:
On a turret (30) which can be driven in rotation about a central axis (A), a plurality of expanding mandrels (42) are arranged all around the central axis (A). They are each essentially composed of a supporting member (44) which is secured to the turret (30) and defines an expanding-mandrel axis (B), a plurality of segmental bars (52) which are arranged all round the expanding-mandrel axis (B) and are guided on the supporting member (44) for radial adjustment, and a wedge (70) which is displaceable along the expanding-mandrel axis (B) to spread the segmental bars (52) apart. The wedges (70) are displaceable in succession, by a common actuating member, during one revolution of the turret (30). The actuating member is a central cam member (18) on which each of the wedges (70) is supported at least during a portion of each revolution of the turret (30) corresponding to the distance between two adjacent expanding mandrels (52).
REFERENCES:
patent: 983278 (1911-02-01), Hartlove
patent: 996122 (1911-06-01), Osborn
patent: 2161963 (1939-06-01), Khatunzeff
patent: 2872887 (1959-02-01), Praturlon
patent: 3350914 (1967-11-01), Ohlsson
Elpatronic AG
Larson Lowell A.
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