Cutting – Means to drive or to guide tool – With simple rectilinear reciprocating motion only
Patent
1989-04-06
1990-07-24
Watts, Douglas D.
Cutting
Means to drive or to guide tool
With simple rectilinear reciprocating motion only
83694, B26D 108
Patent
active
049427989
ABSTRACT:
For shear-cutting a stack of thin sheets of amorphous steel along a cutting plane that extends transversely of the stack, we utilize apparatus that comprises two blades that are positioned at the start of a cutting operation on opposite sides of the stack. Each of the blades has a first surface for engaging one side of the stack and a second surface extending transversely of the first surface and generally parallel to said cutting plane and intersecting the first surface at a corner. The first surface of each blade is disposed at a predetermined rake angle with respect to a reference plane extending through a point on the corner of the blade and normal to said cutting plane. By making the sum of these rake angles of a negative value and beween 5 and 35 degrees, we are able to substantially improve the wear resistance of the blades and lengthen their working life.
REFERENCES:
patent: 1146475 (1915-07-01), Carroll
patent: 1992539 (1935-02-01), Munschauer
patent: 4738173 (1988-04-01), Kiuchi
Hibbs, Jr. Louis E.
Lee Minyoung
Taub Alan I.
Freedman William
General Electric Company
Policinski Henry J.
Rada Rinaldi
Watts Douglas D.
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