Cutting – Cutting motion of tool has component in direction of moving... – Tool carrier shuttles rectilinearly parallel to direction of...
Patent
1975-10-30
1976-11-30
Yost, Frank T.
Cutting
Cutting motion of tool has component in direction of moving...
Tool carrier shuttles rectilinearly parallel to direction of...
83559, 83700, B23D 2502
Patent
active
039941914
ABSTRACT:
A flying shear is disclosed in which a shear carriage is arranged to be driven along the pass line of a moving strip, between a pair of spaced shear platens. The carriage is constructed for telescoping movement and mounts a pair of cooperating carriage plates. The platen members are stationary, but are arranged to have relative closing and opening movement, in order to telescopically compress the shear carriage at desired times, to effect a shearing operation.
A novel form of support is provided for the shear carriage, enabling the carriage normally to be supported from the platen structure by means of antifriction rollers, which accommodate rapid acceleration and high speed movement of the carriage. At the instant when the shearing operation is to occur, however, the closing movement of the platens serves to effectively disable or retract the antifriction roller support for the carriage and cause the carriage to be supported by relatively broad area, elongated, sliding friction bearing surfaces. The arrangement is such that the advantages of the antifriction support are realized for rapid acceleration and high speed travel of the carriage, while at the same time the heavy shock loading of the shearing operation itself is effectively isolated from the antifriction elements.
REFERENCES:
patent: 3229791 (1966-01-01), Soman
patent: 3371515 (1968-03-01), Munschauer, Jr.
patent: 3559522 (1971-02-01), Valente
patent: 3881382 (1975-05-01), Rasenberger et al.
Aetna-Standard Engineering Company
Yost Frank T.
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