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Application filed by В.И. МаксименковfiledCriticalВ.И. Максименков
Priority to SU3982835/27ApriorityCriticalpatent/SU1343638A1/en
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Publication of SU1343638A1publicationCriticalpatent/SU1343638A1/en
Perforating, Stamping-Out Or Severing By Means Other Than Cutting
(AREA)
Abstract
FIELD: metal pressure forming. SUBSTANCE: punch for shaping by stretching includes a casing of changeable templates and an envelope in the form of three-layer elastic construction, consisting of outer sheet facings and a corrugated sheet filler between them, rigidly connected with the facings. The envelope is jointly connected with an apex of the templates. Upon stretching the blank adjoins to a surface of the elastic envelope and also obtains a curvature, being set by the changeable templates. EFFECT: enhanced efficiency of manufacturing process with use of such punch. 1 cl, 2 dwg
SU3982835/27A1985-12-051985-12-05Punch for shaping by stretching
SU1343638A1
(en)