Metal working – Bias cutting of tubular stock
Patent
1980-04-01
1984-04-10
Walsh, Donald P.
Metal working
Bias cutting of tubular stock
29419R, 148 115Q, 2642902, 2642905, B21K 2106
Patent
active
044412371
ABSTRACT:
This invention is directed to a method of fabricating kinetic-energy projiles from composite materials in such a manner that the type and degree of local inhomogeneity and anisotropy is controlled for tailoring the mechanical and physical properties of the projectile for different applications. A continuous rod of composite material is fed into a machine having a stationary holder or gripper and a rotatable holder or gripper which grips the rod. An induction heater heats a particular zone of the rod between the holders. Once the rod zone has been heated, the rotatable holder is rotated through a particular predetermined angular twist about the longitudinal axis, thereby applying a torque on the rod which causes the rod to deform in the heated zone. Depending upon the heated zone length, projectile noses in near-final shapes ranging from rather blunt hemispheres to sharp ogives can be formed. Subsequent to twisting, the rod is released and advanced a sufficient length to form two projectile lengths between the shaped ends. The rod is cut in half between the deformed ends to form two projectiles of desired lengths.
REFERENCES:
patent: 2356966 (1944-08-01), Bardel
Kim Chulho
Weimer Raymond J.
Beers Robert F.
Ellis William T.
Schneider Philip
The United States of America as represented by the Secretary of
Walsh Donald P.
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