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根据梯形齿同步带带轮的展成法加工原理和XXH型同步带传动的研究实践,认为国家标准中给定的渐开线齿廓刀具角α=20°应做适当的修改,并提出了具体的修改建议。
According to the processing principle of trapezoidal toothed belt pulley and the research practice of XXH type belt drive, it is considered that the given involute tooth profile angle α = 20 ° in national standards should be modified appropriately and put forward Specific suggestions for changes.