B - Operations – Transporting – 23 – D
Patent
B - Operations, Transporting
23
D
164/106
B23D 25/02 (2006.01) B23D 25/04 (2006.01) B26D 1/56 (2006.01)
Patent
CA 1049397
ABSTRACT OF THE DISCLOSURE 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 con- structed for telescoping movement and mounts a pair of cooper- ating carriage plates. The platen member 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 car- riage, enabling the carriage normally to be supported from the platen structure by means of antifriction rollers, which accom- modate rapid acceleration and high speed movement of the carriage. At the instant when the shearing operating 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 re- alized for raped acceleration and high speed travel of the car- riage, while at the same time the heavy shock loading of the shearing operation itself is effectively isolated from the anti- friction elements.
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