应用尺寸链的方法计算箱体铸件孔系的尺寸精度

运用尺寸链的原理、方法，计算箱体铸件孔系间非设计孔中心距尺寸和公差，或将已知孔系中心距尺寸转换为直线坐标尺寸及其公差，从而使铸件孔系尺寸检查方便可靠

The Applying of the Dimension Chain to Calculating the Demension Tolerance Between the Holes in the Cased Castings

According to the principle of the dimension chain,a mathod of calculation was proposed which calculates the centretocentre distances and tolerance between the holes or changes these centretocentre distances of the exsisting holes of a cased casting into the rectangular coordinates system ,so that the dimensions between holes can be checked accurately and conveniently.