复杂机加类零件模线样板取制方法

现代飞机制造技术中,模线样板技术是重要的模拟量传递技术,是加工和检验零件的重要依据,在航空制造业中有着至关重要的作用,由于大型机加件结构复杂,其外形样板的取制方法一直都是难点。针对几类复杂的机加类零件,提出模线样板的取制方法。

进口矿大粒度天然铁矿石取制样方法的探讨

介绍了进口矿中大粒度天然铁矿石的取制样方法,在手工取制样方法的应用过程中,根据粒度分布比例定量取样,可以减小取样偏差,然后在制样过程分粒级破碎、缩分,最后得到该批货物的检测样。采用此方法不仅劳动强度相对较小,而且能取得具有代表性的样品。

关于复杂机加类零件模线样板的探究

模线样板是飞机制造过程中的基础工作,该项技术主要是对复杂机加类零件进行加工和检验,对飞机制造的质量、各种零件尺寸的精准性有着非常重要的作用,是飞机设计中的重要依据.飞机制造中使用的零件种类比较多,尺寸也比较大,其外形条件和内部结构的组成都非常复杂,所以进行模线样板的制作通常都是比较困难的.基于此,本文对复杂机加类零件模线样板进行了探究.

Applying Digital Image Processing to Evaluate a Extraction Method of Cartographic Features in Digital Images

A topic studied in cartography is to make the extraction of cartographic features that provide the update of cartographic maps more easily. For this reason many automatic routines were created with the intent to perform the features extraction. Despite of all studies about this, some features cannot be found by the algorithm or it can extract some pixels unduly. So the current article aims to show the results with the software development that uses the original and reference image to calculate some statistics about the extraction process. Furthermore, the calculated statistics can be used to evaluate the extraction process.