THE SCIENCE OF FORMING

摘要

Press shops endure many metalforming failures. Examples are die cracking, bearings running dry, press jammed on BDC, robots misplacing blanks, and punches wearing out prematurely. A complete list of possible failures would fill a book. In contrast, this month's topic covers a very narrow but sensitive failure found in most press shops-sheetmetal fracture or tearing caused by excessive stretching.