FIELD: process engineering.
SUBSTANCE: invention relates to machine building, particularly to production of assembly units and part made of thick rubber, over 20 mm, of various shape, and can be used in production of rocket engines. Shear die comprises plate with cutting element secured thereat composed of cutter unit, pusher to drive extractor for removal of cut parts and wastes. Note here that shear die is provided with extra lower side blade unit for cutting of parts from both sides arranged on mating side of upper blade unit. Two stiff thrust incorporated with said die guarantees the clearance which rules out contact between blade cutting edges to contact solely with rubber material. Blade sharpening angle is defined by claimed formula.
EFFECT: sharpening edges is decreased from 16÷18° to 6÷8°, ruled out breakage and blunting thereof, higher accuracy and quality of cut parts.
1 dwg
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