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一、试验机产生误差的规律 1、当示值误差超出误差规定范围内,进回程差满足要求,是几何参数改变的影响。 2、当示值误差超出规定的范围,进回程差也超出,而变动度很大,这主要是摩擦引起的,一般情况下,示值误差偏正是工作部分摩擦引起的,而偏负是测力部分摩擦引起的。 当示值误差在整个测力范围内不一致:主要是推杆垂线与压杆夹角B改变了,即破坏了刻度的等分指示条件。 当示值误差超出规定范围,但各点基
First, the law of the error of the test machine 1, when the indication error exceeds the error within the specified range, return to meet the requirements, is the impact of geometric parameters change. 2, when the indication error exceeds the specified range, the return difference is also exceeded, and the degree of variation is very large, which is mainly caused by friction, in general, the indication error is caused by partial friction work partial bias is Force measurement caused by friction. When the indication error in the entire measuring range inconsistency: the main thrust rod and pressure rod angle B is changed, which undermined the division of the scale indicating conditions. When the indication error exceeds the specified range, but the point base