Engineering Design Drawing conventions （工程设计制图规范）.pdf

Engineering Design Drawing conventions Standard: A technical specification or other document available to the public… •drawn up with the cooperation and general approval of all interests affected by it, •based on the consolidated results of science, technology and experience, •aimed at the promotion of optimum community benefits and … •approved by a body recognised on the national, regional or international level. 1 Engineering Design Drawing conventions Standard: Regarding engineering drawing, two such standards are: British Standard Institution: BS 8888 (Superceded BS 308) American National Standards Institute: Y14 series The conventions referenced in these notes generally comply with BS 8888. 2 Engineering Design Drawing conventions Line Styles: Visible outlines. Dimension lines. Hidden detail. Centerlines. Section planes. 3 Engineering Design Drawing conventions Line Styles continued --: Irregular boundary Break lines Dimension of a ‘broken’ part 4 Engineering Design Drawing conventions