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在机械装配中,常用固定调整法来保证装配精度要求,即用固定调整法解算装配尺寸链。实际生产中,固定调整法的应用比较复杂,计算公式多,容易产生错误。本文用反计算法解装配尺寸链。1 分组数Z的确定用固定调整法解算装配尺寸链时,需首先计算未装入调整件的空位尺寸S,其大小受组成环尺寸变化的影响,变动范围为S_(max)-S_(min)=sum from i=1 to(n-2)T_(At)T_(Ai)——各组成环公差(不包括调整环)这也是调整环应该全部补偿的范围。在此范围内各组调整环的补偿作用是连续的,因各组调整环的调整能力为:
In mechanical assembly, the commonly used fixed adjustment method to ensure the assembly accuracy requirements, that is fixed with the adjustment method to calculate the assembly size chain. In actual production, the application of fixed adjustment method is more complex, the formula is more, prone to error. In this paper, inverse calculation method to solve the assembly size chain. 1 Determination of the number of groups Z Fixing the method to solve the assembly size chain, you must first calculate the size of the vacancy is not included in the adjustment piece S, the size of the ring size changes by the impact of changes in the range of S max max - min) = sum from i = 1 to (n-2) T_ (At) T_ (Ai) - Each component ring tolerance (excluding the adjustment ring) This is also the range that the adjustment ring should fully compensate. Within this range, the compensation effect of each adjustment ring is continuous, because the adjustment ability of each adjustment ring is as follows: