HYDRAULIC SHOCK APPARATUS FOR WORKING PARTS BY SURFACE PLASTIC DEFORMATION Russian patent published in 1997 - IPC

FIELD: plastic working of metals, in particular, strengthening of parts made from steel and alloys by plastic deformation. SUBSTANCE: apparatus has housing, cylinder with striking piston, deforming and holding tools, static loading hydraulic cylinder, rotary distributor, two hydraulic accumulators, one connected with stem cavity of cylinder and other connected with piston cavity of cylinder. Deforming tool is mounted on waveguide. Weight and size parameters of wave guide and striking piston are selected in accordance with predetermined ratio. Piston cavity of cylinder has braking chamber communicated with stem cavity of cylinder. Striking piston has braking neck with diameter less than that of braking chamber. Distributor rotor has turbine positioned in separate chamber communicated with piston cavity of cylinder, hydraulic accumulator and discharge main. EFFECT: increased efficiency, simplified construction and improved quality of parts. 3 cl, 1 dwg