毕业设计说明书（毕业论文）I摘要本设计是关于对称式三辊卷板机的设计，主要对卷板机的上下辊的结构进行设计和受力分析，对主传动系统及上辊压下传动系统进行设计计算。本文针对水平对称式三辊卷板机进行几何参数、力学参数和工艺参数的分析，建立卷板工艺计算数学模型；编写一次进给卷板工艺流程；根据工艺要求，确定卷板机总体设计方案；对规格为 122200 卷板机进行结构和工艺参数的确定和校核。本课题研究的水平对称式卷板机特点如下：采用水平下调式，即下辊可作水平移动，可实现不用调头便可预弯端头，使进料、对中、预弯、卷圆、矫圆整个卷板过程连续完成，利于提高生产效率，降低工人劳动强度；设置板料对中装置和支承辊装置，利于提高卷板精度和卷板质量；采用全液压驱动，使设备结构简化，便于卷板过程中的速度和压力控制，起停、换向灵活，运行平稳，操作方便；结构简单，便于操作和维护维修，符合现场技术工人的操作和维修水平，高效实用。关键词：卷板机；工作辊；受力分析；传动系统毕业设计说明书（毕业论文）IIABSTRACTThis design is designed on the symmetric three rollers coiling machine, mainly designed and mechanically analyzed on the top and bottom Bending Machine roll structure, and designed calculations on the main drive system and roll pressure on the transmission system.Based on the principle of metal plate mold capability bend distortion,theathletics and motivity of plate coiling has been analyzed.The geometry parameter,mechanics parameter and technics parameter was optimized on level adjust belowthree rollers Rolling Machine.The mathematical model of plate coiling was built andproduction process was established.Using the hydraulic pressure driving protocol.The analyses of the basic loop and hydraulic pressure system have been performed.According to the demand of the produce,the whole project of Rolling Machine wasdesigned.The structure and technics parameter of 122200 Rolling Machine wascomputed and confirme. The characteristic of level adjust below three rollers Rolling Machine in thisinvestigation is as follows.Using the type of level adjust,the end can be bendedwithout turn around and the whole process of plate coiling including entering、center adjusting、pre-bending、coiling、cylinder proofread can be completedcontinuously;due to whole hydraulic pressure driving protocol,the structure wassimplified,and speed and pressure was easily controlled in the process of platecoiling;The setup of the center adjusting and the equip of supporting,the preciseand quality of plate coiling was improved;owing to the simplified structure,theoperation and maintenance is easy to carried out.KeyWord: Bending Machine；the work rolls；mechanical analysis；the transmission system毕业设计说明书（毕业论文）III目录摘要 .IABSTRACT.II第一章 绪论 .11.1 卷板机的介绍 .11.2 卷板机在我国的发展 .11.3 主要研究内容 .21.4 塑性弯曲 .21.5 塑性弯曲时的应力应变状态 .41.5.1 应变状态 .51.5.2 应力状态 .51.5.3 宽板塑性弯曲时三个主应力的分布性质51.5.4 塑性弯曲中现象的复杂性81.6 卷板工艺和卷板质量分析 .91.6.1 卷板工艺 .91.6.2 卷板质量 .121.6.3 卷板设备 .131.6.4 卷板机安全操作规程.15第二章 方案设计 .172.1 总方案的确定 .172.2 三辊卷板机的设计方案的确定 .17第三章 三辊卷板机设计分析 .183.1 主要参数 .183.1.1 卷管所需最大力矩确定 .183.1.2 主参数确定 .223.1.3 受力情况分析 .