在選用壓力機(jī)時(shí),必須嚴(yán)格按照許用負(fù)荷曲線圖來選擇.It is shown that permitted load curve must be implemented in choosing crank press.提出的設(shè)計(jì)數(shù)據(jù)如安全系數(shù)、許用應(yīng)力均根據(jù)生產(chǎn)實(shí)踐的應(yīng)用所確定.Some datum, for example safety factor and allowable stress are put forward based o...