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 ansys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 ansys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 Design of Three-roll Plate Bender
Abstract
The bending machine is a device that plays a huge role in many fields, because cylindrical, conical, and other curved work pieces are indispensable in the production and processing of many devices.The bending machine is the equipment used to process such work pieces.The main machining principle of the three-roll bending machine is the principle of three circle.Through the change of the position of the upper and lower roller, the plate is squeezed and deformed. Through the rotation of the roller shaft under the action of friction, the plate is fed, and the reciprocating motion finally achieves the purpose of bending.This design is the structure design of the three-roll bending machine. After comparing the two different three-roll bending machines, it is determined that the scheme is to increase the symmetry bending machine.Can be used for 30 × 1000mm plate processing.The design adjustment on the roller lift is the worm gear pair and nut screw pair.The overall structure is simple and easy for subsequent maintenance.Flip reduction is a manual reduction,.The overall structure of the bending machine is simple, safety risks are small, and it is convenient for maintenance.In the process of designing the three-roller bending machine, I also found some problems.In case of irregular operation, it is easy to cause the breaking of the roller on the bending plate.And when the pressure of the upper roller is insufficient, the bending radius requirement of the bending can not be reached.Through the design of the new balance mechanism, the problem of the tail break of the upper roller is solved, and the main parts of the bending machine are checked with strength.
Key words： Three roll bending machine; Structural design; Worm worm deputy; Checks; transmission.
A0总装配
A2下辊部件装配
A2支架部件装配
A2支架
A3大齿轮
A3底座
A3螺母
A3连接套
