|
VDG – 參考文獻 P690
Linear tolerances
長度公差
|
Range (Tolerance ) Zone |
D1 |
D2 |
D3 |
|
(in
mm) |
|
|
Field |
GTA |
Field |
GTA |
Field |
GTA |
|
Over 0 |
to |
6 |
0.30 |
14 |
0.24 |
13.5 |
0.2 |
13 |
|
Over
6 |
to |
10 |
0.36 |
0.28 |
0.22 |
|
Over
10 |
to |
18 |
0.44 |
0.34 |
0.28 |
|
Over
18 |
to |
30 |
0.52 |
0.4 |
0.34 |
|
Over
30 |
to |
50 |
0.80 |
14.5 |
0.62 |
14 |
0.5 |
13.5 |
|
Over
50 |
to |
80 |
0.90 |
0.74 |
0.6 |
|
Over
80 |
to |
120 |
1.10 |
0.88 |
0.7 |
|
Over
120 |
to |
180 |
1.60 |
15 |
1.3 |
14.5 |
1.0 |
14 |
|
Over
180 |
to |
250 |
2.40 |
15.5 |
1.9 |
15 |
1.5 |
14.5 |
|
Over
250 |
to |
315 |
2.60 |
2.2 |
1.6 |
GTA普通鑄造公差相當於DIN 1680第2部份
* GTA補充說明
D1適用於未標示之尺寸公差。
D2適用於指定的尺寸公差。
D3僅適用某些尺寸，且須與鑄造廠達成協議。
Tolerance of wall
thickness
厚度公差
|
Smallest side of surface |
|
|
(in mm) |
|
|
|
|
|
up |
to |
50 |
+/- |
0.25 |
|
Over 50 |
to |
100 |
+/- |
0.3 |
|
Over 100 |
to |
180 |
+/- |
0.4 |
|
Over 180 |
to |
315 |
+/- |
0.5 |
Surface roughness
表面粗度
|
Surface standards |
CLA
(μinch) |
Ra
(μmm) |
Rz
(μmm) |
Ry
(μmm) |
|
N7 |
63 |
1.6 |
6.3 |
6.3 |
|
N8 |
125 |
3.2 |
12.5 |
12.5 |
|
N9 |
250 |
6.3 |
25 |
25 |
N9是正常的交貨條件
技術特色
最大尺寸: 300*300 mm
最小尺寸: 5.0*5.0 mm
最大重量: 30 kg
最小重量: 0.003kg
最小厚度: 2.5 mm (局部 1.5mm) |
