目录 摘要1 Abstract 2 1引言3 1.1弯板机简介3 1.2弯板机的国内外发展现状5 1.2.1国内弯板机的发展现状5 1.2.2国外弯板机的发展现状5 1.3弯板机的工作原理5 1.3.1弯板机的主运动和辅助运动5 1.3.2弯曲成型的加工方式6 2设计的主要内容6 2.1主要研究内容6 2.2方案的确定6 2.3传动方案的分析与确定6 2.4主传动系统的确定7 2.5副传动系统的确定7 2.6复位和机架的翻倒装置7 2.7平衡装置7 3机械系统详细设计10 3.1主传动系统的设计计算10 3.1.1上辊的设计和计算10 3.1.2主电机的功率确定12 3.2上辊的设计计算与校核16 3.2.1上辊结构设计及其受力图16 3.2.2 a
nsys上辊工作强度刚度分析16 3.2.3疲劳强度与安全强度的校核19 3.2.5板料被卸下时上辊的校核20 3.3下辊的计算与校核21 3.3.1下辊的结构设计及其受力图21 3.3.2 a
nsys下辊强度刚度分析22 3.3.3下辊疲劳强度校核25 3.4螺旋传动副的计算28 3.4.1螺纹直径的计算28 3.4.2螺纹耐磨性校核28 3.4.3验算自锁情况29 3.4.4校核验证螺杆的强度29 3.4.5螺纹牙强度计算29 3.5升降电机与蜗轮蜗杆副的计算30 3.5.1驱动电动机功率的计算30 3.5.2预设蜗杆蜗轮副参数30 3.5.3接触强度的校核计算31 3.5.4弯曲强度的校核计算31 3.6齿轮传动的设计和计算32 3.7轴承的选择和计算35 3.8支架的设计36 3.9减速器的选用36 3.10弯板机中使用的联轴器选用38 4三辊弯板机的装配体39 总结40 致谢40 参考文献41 三辊弯板机结构设计 摘要 弯板机是一个在许多领域都发挥着巨大作用的设备，因为筒形，锥形以及其他的弧形工件在许多设备的生产加工中都是必不可少的。而弯板机正是用于加工这类工件的设备。三辊弯板机的主要加工原理是三点成圆的原理。通过上下辊轴位置的变化对板材进行挤压产生变形，通过辊轴的旋转在摩擦力的作用下实现板材的进给，往复运动最终达到弯制目的。此次设计为三辊弯板机结构设计，在对比了两种不同的三辊弯板机之后确定方案为上调对称式弯板机。可用于30×1000mm的板材进行加工。本次设计调节上辊升降采用的是蜗轮蜗杆副以及螺母螺杆副。总体结构简单且便于后续的维修处理。翻倒复位则采用人工复位。设计的弯板机整体结构简单，存在安全风险小，且便于维修保养。 关键词：三辊弯板机；结构设计；蜗轮蜗杆副；校核；传动 Structural Desig
n of Three-roll Plate Be
nder Abstract The be
ndi
ng machi
ne is a device that plays a huge role i
n ma
ny fields, because cyli
ndrical, co
nical, a
nd other curved work pieces are i
ndispe
nsable i
n the productio
n a
nd processi
ng of ma
ny devices.The be
ndi
ng machi
ne is the equipme
nt used to process such work pieces.The mai
n machi
ni
ng pri
nciple of the three-roll be
ndi
ng machi
ne is the pri
nciple of three circle.Through the cha
nge of the positio
n of the upper a
nd lower roller, the plate is squeezed a
nd deformed. Through the rotatio
n of the roller shaft u
nder the actio
n of frictio
n, the plate is fed, a
nd the reciprocati
ng motio
n fi
nally achieves the purpose of be
ndi
ng.This desig
n is the structure desig
n of the three-roll be
ndi
ng machi
ne. After compari
ng the two differe
nt three-roll be
ndi
ng machi
nes, it is determi
ned that the scheme is to i
ncrease the symmetry be
ndi
ng machi
ne.Ca
n be used for 30 × 1000mm plate processi
ng.The desig
n adjustme
nt o
n the roller lift is the worm gear pair a
nd
nut screw pair.The overall structure is simple a
nd easy for subseque
nt mai
nte
na
nce.Flip reductio
n is a ma
nual reductio
n,.The overall structure of the be
ndi
ng machi
ne is simple, safety risks are small, a
nd it is co
nve
nie
nt for mai
nte
na
nce.I
n the process of desig
ni
ng the three-roller be
ndi
ng machi
ne, I also fou
nd some problems.I
n case of irregular operatio
n, it is easy to cause the breaki
ng of the roller o
n the be
ndi
ng plate.A
nd whe
n the pressure of the upper roller is i
nsufficie
nt, the be
ndi
ng radius requireme
nt of the be
ndi
ng ca
n
not be reached.Through the desig
n of the
new bala
nce mecha
nism, the problem of the tail break of the upper roller is solved, a
nd the mai
n parts of the be
ndi
ng machi
ne are checked with stre
ngth. Key words： Three roll be
ndi
ng machi
ne; Structural desig
n; Worm worm deputy; Checks; tra
nsmissio
n.