1、GM DAEWOO Auto & Technology EDS Engineering, GM DAEWOO Auto & Technology Standards DRAWING PRACTICE FOR SPRINGS Do Not Use on New Programs. Being Replaced by Global Design Standards EDS-A-1024 ISSUED DATE: 1996. 04. 10 REVISED DATE: 2008. 05. 31 VERSION: 3 (Superceded) EDS-A-1024DRAWING PRACTICE FOR
2、 SPRINGS PAGE: 1/6 ISSUED 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 It is Superceded for all future projects and replaced by Global Design Standards. 1. APPLICATION Thi
3、s standard applies to drawing practices for the following springs used by GM DAEWOO Auto & Technology Company (hereinafter referred to as the “GMDAT“). 1.1. Compression coil spring (Fig. 1, 2, 3, 4, 5) 1.2. Extension coil spring (Fig. 7, 8, 9) 1.3. Torsion coil spring (Fig. 10, 11) 1.4. Leaf spring
4、Fig. 12, 13) 1.5. Volute spring (Fig. 14) 1.6. Spiral spring (Fig. 15) 1.7. Belleville spring (Fig. 16) 2. INDICATION METHOD 2.1. Coil springs, volute springs, spiral springs and Belleville springs shall be indicated in the no-load condition and leaf springs shall be indicated in the condition wher
5、e leaves are laid in parallel in principle. When indicating dimensions in the loaded condition, however, the load shall be specified. 2.2. Displacement diagrams shall be indicated in straight lines in drawings unless problematic in practical terms. (Fig. 1) 2.3. When some portion of the same shape i
6、s omitted except for the ends, the omitted portion shall be represented by a long chain line. (Fig. 3, 4, 8, 11) 2.4. When only types and shapes of springs are indicated, the center line of the spring part is drawn in a thick solid line. (Fig. 5, 9, 15) In case of leaf springs, the outline of the sp
7、ring is represented by a solid line. (Fig. 13) In the assembly and explanatory drawings, however, only the section of the coil spring may be drawn. (Fig. 6) (Note) Attached drawings in this standard are only examples. Dimensions, loads and tolerances shall be entered upon necessity. 3. SPECIFICATION
8、S See Tables 1, 2, 3, 4, 5, 6. EDS-A-1024DRAWING PRACTICE FOR SPRINGS PAGE: 2/6 ISSUED DATE: 1996. 04. 10 REVISED DATE: 2008. 05. 31 VERSION: 3 GM DAEWOO Auto & Technology 4. RELATED STANDARDS JIS B 004-1973 SPRING DRAFTING KS B 0005 SPRING DRAFTI KS B 0103 SPRING TERMS Table 1. Example of specifica
9、tions Specifications (compression spring) Diameter of material ( ) Load (N) kgf I/D (O/D) of coil In assembling Height Active coils Load (N) kgf Total coils Height Left-hand helix At maximum compression Stress (MPa) kgf/mm2 Winding direction Spring constance (N/mm) kgf/mm2 Free height Contact height
10、 Table 2. Example of specifications Specifications (extension spring) Diameter of material Designated length I/D (O/D) of coil Load at designated length (N) kgf Active coils Designated load (N) kgf Total coils Length at designated load Left-hand helix Standard spring characteristicsSpring constance
11、at designated load (N/mm) kgf/mm Winding direction Maximum displacement Free length maximum allowable stress (MPa) kgf/mm2 Initial tension (N) kgf EDS-A-1024DRAWING PRACTICE FOR SPRINGS PAGE: 3/6 ISSUED DATE: 1996. 04. 10 REVISED DATE: 2008. 05. 31 VERSION: 3 GM DAEWOO Auto & Technology EDS-A-1024DR
12、AWING PRACTICE FOR SPRINGS PAGE: 4/6 ISSUED DATE: 1996. 04. 10 REVISED DATE: 2008. 05. 31 VERSION: 3 GM DAEWOO Auto & Technology Table 3. Example of specifications Specifications (torsion coil spring) Diameter of material Torsion moment (Nmm) kgfmm I/D (O/D) of coil In assembling Torsion angle (g) A
13、ctive coils Torsion moment (Nmm) kgfmm Winding direction Torsion angle (g) Free height At maximum compression Stress (MPa) kgf/mm2 Free angle () Spring constance (N/mm) kgf/mm2 EDS-A-1024DRAWING PRACTICE FOR SPRINGS PAGE: 5/6 ISSUED DATE: 1996. 04. 10 REVISED DATE: 2008. 05. 31 VERSION: 3 GM DAEWOO
14、Auto & Technology Table 4. Example of entering Specifications Load (N) kgf Camber (mm) Camber (mm)No load 0 112 - Under use load 2260(230) 6 1152 Under test load 5000(510) Leaf spring dimensions (JIS G 4801 B longitudinal section) Extended length No. A side B side Total Thickness Width 1 676 784 142
15、4 2 430 550 980 3 310 390 700 4 160 205 365 6 60 (Fig 12) (Fig 13) EDS-A-1024DRAWING PRACTICE FOR SPRINGS PAGE: 6/6 ISSUED DATE: 1996. 04. 10 REVISED DATE: 2008. 05. 31 VERSION: 3 GM DAEWOO Auto & Technology (Fig 14) Table 6 Specification Material SK 5 Plate thickness 2 Inside diameter 25.4 Outside
16、diameter 50 Free height 3.4 Load in assembling (kgf) 219(22.3) Height in assembling 3 (Fig 16) (Fig 15) Specification Material Width thickness Total length Annealing torque of 1 turn N.mm, kgf.CmRotational disengagement torque N.mm, kgf.CmWinding axis diameter Case inside diameter Material surface processing Surface treatment Anti-corrosion treatment Table 5
