The influence law of gear ' s bending stress affected by nominal pressure angle and technological angle of tooth profile has been summarized and obtained a conclusion that the maximum bending stress before running in period occurred at the waist place of the tooth , thus provided a theoretical foundation for the design and application of double arced gears 總結(jié)了名義壓力角和齒形工藝角對輪齒彎曲應(yīng)力的影響規(guī)律,并得出跑合前最大彎曲應(yīng)力發(fā)生在齒腰處的結(jié)論,為雙圓弧齒輪的設(shè)計(jì)和使用提供理論依據(jù)。