1、GM DAEWOO Auto & Technology EDS Engineering, GM DAEWOO Auto & Technology Standards PROJECTION METHODS Do Not Use on New Programs. Being Replaced by Global Design Standards EDS-A-1012 ISSUED DATE: 1996. 04. 10 REVISED DATE: 2008. 05. 31 VERSION: 3 (Superceded) EDS-A-1012PROJECTION METHODS PAGE: 1/2 I
2、SSUED DATE: 1996. 04. 10 REVISED DATE: 2008. 05. 31 VERSION: 3 GM DAEWOO Auto & Technology Note: This standard may be applied only for current project drawings generated by CATIA. It is Superceded for all future projects and replaced by Global Design Standards. 1. PURPOSE This standard aims at descr
3、ibing projection indicated in drawings. 2. SCOPE This standard specifies projection in drawings to correctly represent dimensions, shapes and specifications of products in drawings. 3. PROJECTION 3.1. Projection is classified into third angle projection(Fig. 1) and first angle projection(Fig. 2). Dr
4、awings made in GM DAEWOO Auto & Technology Company (hereinafter referred to as the “GMDAT“) shall use third angle projection. Fig. 1 Third angle projection Fig. 2 First angle projection 3.2. In case identification of third angle projection or first angle projection is required, it is designated by s
5、ymbols in Fig. 3 in the projection column of the title block. (a) Symbol of third angle projection (b) Symbol of first angle projection EDS-A-1012PROJECTION METHODS PAGE: 2/2 ISSUED DATE: 1996. 04. 10 REVISED DATE: 2008. 05. 31 VERSION: 3 GM DAEWOO Auto & Technology Fig 3 3.3. The number of projecti
6、on shall be kept to minimum within the range to permit proper understanding. 3.4. Space between projection: With respect to the drawing size and projection in relation to arrangement of objects, the space between projections shall be sufficient enough to permit proper understanding of projection, dimensions, notes and other drawing specifications. 4. RELATED STANDARD EDS-A-1010 Drawing title block
