Dimensioning of basic body,cutting and interpenetration bodies 常见基本体、截勿体及相贯体的尺寸注法 2.Dimensioning of subtraction/cutting type solid截切体的尺寸注法 When dimensioning cutting type composite solid,there are also dimensions for defining location of individual shape elements,such as cutting planes,in addition to the above shape dimensions.As the intersection curve is uniquely defined with basic shape dimensions and location dimensions,there is no need to dimension intersection curves.在标注截切体的尺寸时，除应标注上述定形 尺寸外，还应注出确定藏平面位置的定位尺寸。由于截平面在形体上的相对位， 置确定后，截交线即被惟一确定，因此对截交线不应再标注尺寸。 应注截平面定位尺寸 中26 中26 3 SR13 截交线处不注尺寸 中26 面内塔 24 应注截平面定位尺寸 截交线处不注尺寸
6 截交线处不注尺寸 应注截平面定位尺寸 应注截平面定位尺寸
Dimensioning of basic body,cutting and interpenetration bodies 见基本体、截切体及相贯体的尺寸注法 3.Dimensioning of union/interpenetration type part相贯体的尺寸注法 There are also location dimensions in addition to shape dimensions for union/interpenetration type parts.With shape and location dimensions,the interpenetration curves are uniquely defined,and there is no need either to dimension interpenetration lines 因此为相贯线不应再标注尺时 请 确定， 相贯线处不注尺寸 017 φ28 φ16 中28 R8 14 9C0 S中28 27 37 点击鼠标左键显示后面内容 相贯体的定位尺付 相贯体的定位尺寸
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Dimensioning of basic body,cutting and interpenetration bodies 常见基本体、截切体及相贯体的尺寸注法 4.Dimensioning of supporting board elements常见平板的尺寸注法 All center-to-center spacing of holes,screw threads and grooves on the board should be dimensioned.Since the basic shape of the board and the distribution of holes and grooves are different,the formats of location dimensions for dimensioning center-to-center spacing are also different. 在板上用作穿螺钉的乳、槽等的中心距趣宫注出而具申于返的基本 形状和孔、槽的分 布形式不同，其中心距定拉尺时的标注形式也不样。 φ46 中32 击鼠标 R10 中46 b46 20 2×中10 3×φ6 Φ20 35 46 左键显示后面内 容
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