被测要素

最大实体要求应用于被测要素评定方法研究

Study on the Evaluation of Maximum Material Requirement Based on Measured Feature

揭示了剪移对被测要素以及相关量的影响；

This paper is revealed the influences of shear on the measured features and the relative quantities .

操作软件进行图像处理，提取钻尖图像中被测要素的角点坐标，进而计算出被测钻尖的几何参数。

Operating software for image processing and Collecting the coordinates of image Corner points , then can calculate the geometric parameters of drill point .

对被测要素、基准要素在应用最小实体要求时，尺寸公差与形位公差相互补偿问题进行计算分析。

We calculate and analyze the mutual compensation between size tolerance and form & position tolerance while applying the minimun material requirement to the tested essential factors and standard key elements .

当被测要素为轴线、中心线或对称平面时，指引线的箭头和基准符号应与该要素的尺寸线对齐。

If the element being tested with tolerance requirements is an axis , centre line or symmetrical plane , the arrow and datum symbol should be aligned to the dimension line of that element .

当具有公差要求的被测要素为线或平面时，将指引线箭头和基准符号指在线或平面上，且必须与尺寸线错开。

If the element being tested with a tolerance requirement is a contour line or surface , point the arrow and datum symbol to the contour line or surface , and keep it away from the dimension line .

并在采集图像上完成被测几何要素的初始定位，再确定几何量边缘点且按不同最优化指标对其拟合，得到检测量的几何描述。

After the measured geometrical elements were localized initially in gathering image , the edge points of geometrical quantity were confirmed and curve was fitted according to the different optimization indexes to get the geometrical description of detection quantity .

采用合适的装置将被测工件的光学图像转换成数字信号，进一步对其分析以得出有关被测要素的数值，可以明显地提高检测效率和检测适应性。

Convert optical image of measured workpiece into digital signal using proper device , then obtain numeric value related to measured workpiece under further analysis , the test efficiency and adaptability can be improved obviously .