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无论是凸凹模还是型心型腔都要
1 j0 Q# c) y7 `' a: m/ |刚进行了塑料模的设计,说明书里有成型零件的一部分计算:6 p7 e/ Y, M1 Y7 N
该塑件精度等级为一般精度,(6级),故选取制造公差为零件公差的1/4,模具磨损系数为0.5。模具工作部分尺寸计算过程为:
% _$ B( G% A; }, b$ j6 \ y A1M+δz =[(1+S)AS1-xΔ1]+δz1=[(1+2.0%)*80-1/2*0.76]+0.76/4=81.22+0.190mm
- `% J0 T) z" v9 K3 z A2M+δz =[(1+S)AS2-xΔ2]+δz2=[(1+2.0%)*25-1/2*0.48]+0.48/4=25.26+0.120mm e, @# z0 {$ T3 E: D) r
B1M-δz =[(1+S)BS1+xΔ3]-δz3=[(1+2.0%)*72+1/2*0.76]-0.76/4=73.82-0.190mm) M- G9 D% x8 f3 i; d/ y
B2M-δz =[(1+S)BS2+xΔ4]-δz4=[(1+2.0%)*22+1/2*0.44]-0.44/4=22.66-0.110mm
2 j1 l* {5 V6 Z1 C) e' M B3M-δz =[(1+S)BS3+xΔ5]-δz5=[(1+2.0%)*7+1/2*0.32]-0.32/4=7.3-0.080mm
7 P F$ Z' C# v CM±δz =[(1+S)Cs]±δz/2=[(1+2.0%)*50]±0.28/4=51±0.07mm
& M/ z" a& @6 p0 ]/ I) S上标看不出来,-δz, δz1,+0.76/4这些都是上标,1/4就是制造公差,说得乱七八糟的,你大概也懒得看了,反正一句话,理论上是要算的 |
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