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所在平台: Udemy |
课程主页: https://www.udemy.com/course/machine-element-design-ii-screws-fasteners-springs-belt/
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**课程名称：** 机械设计基础 II - 螺钉、紧固件、弹簧、皮带 **课程概述：** 本课程是机械设计领域中一个重要的分支，系统地介绍了机械设计中常用部件的设计。作为“四合一”的综合性课程，它深入探讨了动力螺钉、螺纹紧固件、螺旋弹簧和皮带传动的设计原理、计算方法和实际应用。 **课程内容要点：** * **动力螺钉（或称丝杠）：** * 规格说明 * 工作原理 * 受力分析 * 自锁特性 * 螺钉中的应力 * 载荷分配与效率 * **螺纹紧固件：** * 拧紧机构原理——如何施加扭矩来夹紧两个零件 * 连接图 * 紧固件的刚度 * 工件轴的刚度 * 设计问题 * 螺栓的强度极限 * 扭矩与预紧力之间的关系 * 安全系数与松动原因 * **螺旋弹簧：** * 压缩螺旋弹簧中的应力 * 沃勒（Wahl）系数 * 应变能与刚度关系 * 弹簧端部设计细节 * 预紧处理（预压） * 稳定性（抗屈曲） * 扭转弹簧的设计应力 * 扭转弹簧的扭转刚度 * **皮带传动：** * 皮带传动的工作原理 * 皮带理论 * 初始张力 * 根据制造商样本的设计步骤 * V 型皮带设计步骤（基于标准表格） * 设计问题示例 * 张紧轮（惰轮） **目标学员：** 本课程主要面向在机械系统设计中应用设计原理来设计机械部件的设计工程师。 **课程特色：** 本课程不仅提供所需的公式，更重要的是深入讨论了公式推导的“为什么”和“如何做”，帮助学员建立对设计原理的深刻理解。
Machine design is a large subset of study under mechanical engineering design which includes design of common components used in machines.This is a mega-course of 4 courses in 1 which covers multiple aspects of design of Power screws, Threaded fasteners, Coil Springs and Belt drivesTopics covered: Power or Lead Screws:Specifications of Power screwsPrinciple of OperationForce analysisSelf locking featureStress in Power screwsSharing of Load and efficiencyThreaded Fasteners Mechanism of Fastening - How torque applied clamps the two partsJoint diagramFastener Bolt stiffnessMember stiffnessDesign problemStrength limit of BoltsRelation between torque and PreloadFactor of Safety and Causes of LooseningCoil SpringsStress in Compression coil springWahls factorStrain energy and relation of StiffnessSpring ends and Design detailsPre-setting of springsBuckling stabilityTorsion springs - Design stressesTorsion springs - Torsion rateBelt drivesWorking principle of Belt drivesTheory of BeltingInitial tensionDesign Procedure from manufacturer catalogueDesign Problem V belts Design procedure from standard tablesDesign Problem solvedIdler pulleysThe Course is designed for Design engineers who apply design principles in designing machine components as part of mechanical systems.The Course doesn't only give the formulae but discusses on the why and how? of the derivations
