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yong dian de zuo biao gong shi ji suan kong jian jiao du he chi cun
Author(s): 
Pages: 22-28
Year: Issue:  2
Journal: Mathematics in Practice and Theory

Keyword:  空间角度点的坐标零件设计图公式计算投影面投影角投影坐标系一般位置平面机床主轴坐标系统;
Abstract: <正> 一、问题的提出 当机械零件上孔的轴线或平面相对三个投影面是倾斜的,称为一般位置的孔或平面.这类孔或平面加工时,由于工艺基准和设计基准不一致,往往根据零件设计图给定的角度和尺寸,计算加工时所需要的工艺角度和尺寸.图1(a)是一个机械零件设计图,已知孔轴线的正投影与Z轴的夹角是30°,孔轴线与正投影面的真实夹角是17°.加工一般在
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