河北工程大学考试冲压课程设计弯角件

1. 1.1. A3Q235A1.5mm 1-1 1.2 A3A3Q235AA30.14%0.22%235MPa375460MPa 1.3 A3 1.425.1=t3r2/=tr5.10r7/=tr5.312tmm<rlt1-1731.752.251.5l=?=> 1rSrS=?=35.135.1220 2.1 2-1 2-131234567 2.2 2.3 4 3.1 12 3.2 4.1 tr5.0>14-37KtrlllllL+=+=210215 Lmm 1l 2lmm K14-30.38 rmmtmm1 mmL6.285.138.03214.35.75.151+=28.5mm2R126/30=4-1mmL6.415.138.05.10614.32302+=41.5mm364-2 4.2 1 trkbtFb+27.0 k11.32.1=kb30mmt1.5mm b375460MPa420MPa r3mm NF52925.134205.1302.17.02=+ 14-41 pAF?= A,mm2p14-44060MPa50MPa 2465305.15mmA= 7kNNF3.232325046550= 60%80% ()FF8.06.0= 0.7kNFF7.37.0=2 NF75.16535.15.104205.15.122.17.022=+ 25.1375.55.122mmA=kNNF9.668755.13750= kNFF2.17.0= 4.3 kNF2.309.63.23=+= kNFF36.542.308.18.1=;. 63kN2363JC? 4-1 63kN170mm50mm40mm 160/min 150mm 3050mm40mm315mm150mm200mm70mm 30 110mm110mm30mm8 90VV5-15-1 5.1 1 minr3rV9013prr= 10.5r14-32 2spEtrrEtr=+ rmm r10.5mmE210GPa t1.5mm9spMPasp14-30 11.752352762aspsmMP= 33210101.510.58.5210101.52276210.5rmm=+ 28.5prr= 2 2tmmtr)63(= 3t;5.41mmrd= ;102mmrd= 3 V14-71520mmmmL160= UmmL40= 5.2 1 nttZ+=max Zmm maxt1.5mm n14-100.10 mmZ65.15.110.05.1=+= 2 10 IT13IT145-117.5mm20+17.5=37.5mm14-45 +?=0)75.0(LL 14-46 0)2(?=ZLL L37.5mm?,3,3-2?0.52mmIT7IT9893,3-2=0.039mm=0.062mmZ1.65mm mmLL062.00062.00011.37)52.075.075.30()75.0(+=?=?= 5-1 mmZLL0039.00039.0046.35)65.111.37()(?=?=?= 30mm30mm28.5prr=mmL40=44mmIT7IT9893,3-2=0.039mm=0.062mm mmL0039.044?= +=0)2(ZLL11mmrrZpd5.15.81022=?=?=mmL062.00062.0047)5.1244(+=+= 6.1 6.2 mm4030?11.5mm5040?HmaxHminHmmHHHmmHH5101max1min?+? 1HmmH170max=mmHH13040maxmin=?=H1Hmm170130?222.4-23.2851/170130100160TIGBmmH170130=35125160 5.2855/TGB40125160 6.2855/TGB1213025 1.2861/TGB388025 6.2861/TGBmm125160mm5.40mm70 7.1 11015 mm223 mm345mm25 1.2861/130528TGBhmm386.2861/6388025TGBH 7.2 : mm30: mm501.7646/7830TJBA3032786-16/7mH136-1 7.3 6-26-21- 2- 3-4-147.4 6-3 6-31- 2- 3- 4-5- Cr12MoV Cr12MoV 300400mm300400Cr12 15 9.19.1 9.19.1 8-116 8-28-317114 2 3 4 5 6 78 913 10 11 12 15 16 17 18 19 20 9.2 161539090 () mm5.1 0 mmmmmmA20001000)5.1(3mmmm20005.34531813.52. 3