PUNCH-DEVICE FOR TESTING AND METHOD OF TESTING OF SHEET MATERIAL FOR SPRINGBACK AND CAPACITY AT DOUBLE-ANGLE BENDING (VERSIONS)

摘要

FIELD: sheet stamping.;SUBSTANCE: for tasting as a technical facility it is used punch-device with puncheon and matrixes, at that punch-device is mounted on press equipment, and in the capacity of instrument there are used indicators and protractors of extra accuracy, the assistance of which is defined linear and angular parameters of sample after unloading with extra accuracy.;EFFECT: device enhancement and maximal shaving of testing procedure to the production methods of sheet bending.;11 cl, 7 dwg