Metal deforming – By use of 'flying tool' engaging moving work – With cutting
Patent
1985-12-31
1987-08-11
Larson, Lowell A.
Metal deforming
By use of 'flying tool' engaging moving work
With cutting
83304, 83337, B21D 1304
Patent
active
046853189
ABSTRACT:
A high speed rotary cutter includes a rotary drum rotated at varying speeds in synchronization with an associated toothed counterwheel. The rotary drum includes at least one reciprocative cutter blade which is movable radially of the drum into and out of engagement with at least one fixed cutter blade provided on the toothed counterwheel. The movement of the reciprocative cutter blade between a projected and a retracted position thereof is controlled by a rotary cam which is located inside of the rotary drum coaxially therewith and which is driven by a servomotor. The rotary cutter also includes a control unit which controls the servomotor in such a manner that, during a cutting mode, the rotary cam is rotated with its cam nose engaged with the reciprocative cutter blade to urge it into engagement with the fixed cutter blade to shear a continuous corrugated strip. During a non-cutting mode, the cam nose is angularly offset from the reciprocative cutter blade to retract the latter within the drum, thereby allowing the strip to pass through the rotary cutter without undergoing shearing.
REFERENCES:
patent: 1304034 (1919-05-01), Edwards
patent: 2405204 (1946-08-01), Goodrich
patent: 2761513 (1956-09-01), Stram
patent: 3263465 (1966-08-01), Way et al.
patent: 4480456 (1984-11-01), Iwase et al.
Hakamata Kohei
Tsuchiya Seigo
Ueda Masahiro
Larson Lowell A.
Nippondenso Co. Ltd.
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