Cutting – Interrelated tool actuating means and means to actuate work... – Work clamp
Patent
1982-02-26
1985-01-22
Yost, Frank T.
Cutting
Interrelated tool actuating means and means to actuate work...
Work clamp
83465, 83641, 83693, 83700, B26D 316, B26D 702
Patent
active
044944284
ABSTRACT:
A removable cutting tool insert assembly for shears fed with stock, such as bar stock, and including a ram actuatable upper housing closeable downwardly toward and biased upwardly away from a bolster supportable lower housing in a direction transverse to the stock feed direction, with an upper elongated shearing knife mounted on the upper housing and movable for centering adjustment longitudinally of a lower elongated shearing knife mounted on the lower housing upstream of and movable for clearance adjustment laterally of the upper knife, with a hold down movably mounted on the upper housing adjacent the upper knife and biased downwardly toward the opposite lower knife to a location below the recessed top initial stock engaging cutting edge surface portion of the upper knife, but above the lower edge surface of the upper knife, and with a work support movably mounted on the lower housing adjacent the lower knife and biased upwardly toward the opposite upper knife to a location substantially flush with the recessed bottom initial stock engaging cutting edge surface portion of the lower knife, to facilitate stock feed. Thus, during closing movement, the hold down resiliently clamps the upstream stock portion against the lower knife prior to and during shearing, in order to prevent the upstream stock portion from kicking, while the work support resiliently clamps the downstream stock portion against the upper knife during shearing, in order to prevent the downstream stock portion from bending.
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patent: 4130040 (1978-12-01), Donnelly, Sr. et al.
Phan Hien H.
Weber Robert C.
Yost Frank T.
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