毕业设计
R'0.4?Dn0.4?S1266.518?12??639.259mm 22sin?0.4?22??0.235
sDc639.259?6?120R'0.4??22t390tg?0.4?0.242
2）板料由平板开始弯曲时的初始弯矩M1
M1?K1W?s?1.5?4.8?104?235?1.692?107 kgf·mm
BS22000?122??4.8?104 W为板材的抗弯截面模量。W?663）板料变形40%时的最大弯矩M0.4
M0.4?(K1?K0S11.6?12)W??s?(1.5?mm )?4.8?104?235?1.815?107 kgf·2R'0.42?639.2594）板料从R'?卷制到R'0.4时的变形弯矩Mn1
Mn1?(M1?M0.4)(11Dc?) R'0.4R'0411?240?????3.292?106kgf· ?(1.692?1.815)?107??mm
639.259?4??上辊受力：
Pa0.42M0.42?1.815?107???2.325?105kgf
S??'?639.259?6??0.242R?tg??0.4?0.42??下辊受力：
Pc0.4M0.41.815?107???1.197?105kgf
S??'?639.259?6??0.235R?Sin??0.4?0.42??5）消耗于摩擦的摩擦阻力矩Mn2
Mn2?f?Pa0.4?2Pc0.4??m?PadaDc?m?Pcdc2Da
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毕业设计
?0.8??2.325?1.192?2??105?0.06?2.325?105?180240??0.06?1.197?105?130 2300=2.315?106 kgf·mm
6）板料送进时的摩擦阻力矩MT
MT?f?Pa?2Pc??m?PaDcdaDa2
180240?1.381?106 kgf·mm ?2300?0.8??3.292?2.325?2??105?0.06?3.292?105?7）拉力在轴承中所引起的摩擦阻力矩Mn3 Mn3??Mn1?MT??m?dcDc??32.92?13.81??105?0.06?130mm ?1.519?105 kgf·
2408）卷板机送进板料时的总力矩Mp
56mm Mp?mPcDc?0.18?1.197?10?240?5.171?10 kgf·
9）卷板机空载时的扭矩Mn4:
G1：板料重量G1:
2??DnS?2?DnS??G1?????????????b?7.8?10?6?22?????22??
2??60012?2?60012???????????????2000?7.8?10?6?588.106kg
2?2???2???2?G2：联轴器的重量[8] : 选ZL10，G2=180.9kg G3：下辊重量:
?240?G3?2???2?7.8?10?6??????2500?1764.318kg
?2?Mn4?m??G1?G2?G3??dc 2130?9.88?103 kgf·mm 22?0.06??588.106?180.9?1764.318??10）卷板时板料不打滑的条件：
Mn1?MT?Mn4?Mp
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毕业设计
Mn1?MT?Mn4?3.292?106?1.381?106?9.88?103?4.682?106 kgf·mm
mm Mp?5.171?106 kgf·
因为Mn1?MT?Mn4?Mp，所以满足。
11）驱动功率：
Mn?Mn1?Mn2?Mn3?Mn4?5.769?106 kgf·mm
d2VNq?[Mn??P（f??）]
2Dc?2?0.15?[5.769?106?3.522?10（0.8?0.06?75）]?7.954kw
240?0.82. 成形70%时
1）板料成型70%的基本参数
D'506.607D0.7'?n??723.724mm
0.70.7D'?SR0.7'?n0.7?367.862mm
2Sin?0.739022???0.395 SDc367.862?6?120R'0.7??22tTg?0.7?0.429
2）板料变形70%时的最大弯矩M0.7
11.6?12????KS4M0.7??K?0?4.8?10?235 '?W?s??1.5??(2?R)2?367.862?0.7????1.905?107 kgf·mm
Pa0.7'2M0.72?1.905?107???2.376?105kgf
12S??(367.862?)?0.429R'?Tg??0.7?0.722??M0.71.905?107???1.289?105kgf
12S??(367.862?)?0.395R'?Sin??0.7?0.722??Pc0.7'3）板料从R'0.4变化到R'0.7时的板料变形弯矩Mn1
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毕业设计
?11?Dc? Mn1??Mn0.4?M0.7????R??0.7R0.4?411??240??1.851?1.905??107????2.601?106 kgf·mm ??367.862639.2594??4）消耗于摩擦的扭矩Mn2
Mn2?f?Pa'?2Pc'??M'Pa'daDc??M'Pcdc 2Da?0.8??2.376?2?1.289??105?0.06?2.376??2.428?106 kgf·mm
180240??105?0.06?1.289?130?10523005）板料送进时的摩擦阻力矩MT
MT?f?Pa'?2Pc'??M'Pa'dcDc? 2Da1802405?0.8?(2.7?36?21.?2589)?10?0.06?2.?736?2300?6 1kgf·?0mm 1.423106）拉力在轴承中所引起的摩擦损失Mn3
Mn3??Mn1?MT?m?dc130??2.601?106?1.423?106??0.06? ?1.308?105 kgf·mm Dc2407）机器送进板料时的总力矩Mp
56mm Mp?MPcDc?0.18?1.289?10?240?5.568?10 kgf·
8）卷板机空载时的扭矩Mn4?9.88?103 kgf·mm 9）板料不打滑的条件
Mn1?Mn4?MT?2.601?106?9.88?103?1.423?106?4.033?106 kgf·mm
因Mn1?Mn4?MT?MP，所以满足。 10）驱动功率
Mn?Mn1?Mn2?Mn3?Mn4
?(2.601?2.428?0.1308?0.00988)?106?5.169?106 kgf·mm
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毕业设计
d2VNq?[Mn??P（f??）]
2Dc?2?0.15?[5.169?106?3.665?10（0.8?0.06?75）]?7.408kw
240?0.83.成形90%时
1） 板料成型90%的基本参数 D0.9'?R0.9'Dn'506.607??562.8mm 99 0.90.9562.899?12??287.45mm
2Sin?0.9?2?0.472 SDcR'0.9??22t Tg?0.9?0.535 2）板料变形为90%时的最大弯矩M0.9
M0.9???K1??K0S?W???1.5?11.6?12??4.8?104?235 ?1.965?107 kgf·mm ?s??2R0.9'?2?287.45??2M0.92?1.965?107Pa0.9'???2.503?105kgf
12S??(287.45?)?0.535?R0.9'??Tg?0.922??Pc0.9M0.91.965?107???1.419?105kgf
12S??(287.45?)?0.472R'?Sin??0.9?0.922??3）板料从R'0.7变化到R'0.9时的板料变形弯矩Mn1
?11?DcMn1??M0.7?M0.9??? ?RR40.7??0.91?1?240?(1.905?1.965)?107??? ???287.45367.862?4?1.766?106 kgf·mm
4）消耗于摩擦的扭矩Mn2
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