肋的底部厚度 Bottom Thickness of Rib
(A)
(B)
1.5WD
1.2WD
W
2.5W
W
0.5W
肋的設計 (一 )
Rib Design ( 1 )
A
C
t
B D
E F
A
t = wall thichness B = 0.5t C=3t
D=2B E = 0.13 mm(radius) F = 1.5 - 2 deg
改進 [Improved]
外側凸轂 Outside Boss
A ( DIA )
A'
A'
B=A B= 2A ( max. )
B
Section A'-A'
熔接線
70 100
熔接線
空洞或/和凹陷的形成 Void or/and Sink Mark Forming
空洞 ( Void )
凹陷 ( Sink Mark )
Wall Thickness, Gussets
Conventional
0.080 to 0.125 in (2.0 to 3.2 mm)
t gusset 0 . 6 t wall
h 4 t wall r 0 .375 mm
1o 2
Thinwall:
0.050 to 0.080 in
突出件壁厚 Thickness of the Projection
突出件在和公稱厚壁相交處的建議厚度:以高縮水率的 結晶性塑膠而言,可採用公稱壁厚的50% 。 以低縮水 率的非結晶性塑膠而言,可採用公稱壁厚的75% 。
The recommended thickness at the junction of a projection and the nominal wall (NW) is 50% of the NW thickness for high-mold-shrinkage, crystalline materials. The lower-mold-shrinkage-factor, amorphous plastics can have thicknesses of up to 75% of the part’s NW thickness .