机械5

摘要 GT1-4型调直切断机用于调直和切断直径1-4mm钢筋，可广泛用于五金制品、工艺品及日用品生产的各个领域。该机器由进线部分、调直部分、切断部分等组成，可设定钢筋切断长度并自动落料。 本文对钢筋调直切断机的设计进行了比较系统的研究，对钢筋调直切断机进行了分类和综合的介绍；对钢筋调直切断机的工作原理进行了系统的分析；对钢筋调直切断机的功率计算与分配、受力分析、结构设计、主要零部件设计与选择等进行了详细的介绍。对产品总体结构和工作性能进行了优化设计，达到了比较完善的设计要求，最后对钢筋调直切断机进行了总体调试。 本次设计的钢筋调直切断机为电机驱动钢筋调直切断机，用于调直直径为1-4mm的盘圆钢筋或冷拔钢筋。并且根据需要长度进行自动调直和切断，调直过程中将钢筋表面氧化皮、铁锈和污物除掉。充分发挥了其良好的机动性，体积小，操作简单，效率高等特点，在提高施工速度，保证施工质量的同时，降低了人工与材料的成本，减轻了劳动强度，提高了劳动生产率。 关键词：钢筋；调直；切断；设计 Abstract GT1-4 type straighte
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nsure co
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ng the cost of labor a
nd materials, reduce the labor i
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nsity, improve the labor productivity. Keywords: rei
nforced; straighte
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ng; cut; desig
n 目录 摘要I Abstract II 第一章绪论1 1.1课题背景及意义1 1.2国内外发展现况1 1.3发展前景2 第二章总体方案设计与参数计算3 2.1设计要求3 2.2方案设计3 2.2.1原理分析3 2.2.2调直机构方案设计3 2.2.2切断机构设计4 2.3主要参数计算4 2.3.1生产率计算4 2.3.2功率计算及电动机选择5 第三章主要零部件的设计9 3.1第一组V带传动设计9 3.1.1确定设计功率9 3.1.2初选带的型号9 3.1.3确定带轮的基准直径和9 3.1.4确定中心距a和带的基准长度10 3.1.5验算小轮包角10 3.1.6计算带的根数10 3.1.7计算带作用在轴上的载荷Q 11 3.2第二组V带设计11 3.2.1确定设计功率11 3.2.2初选带的型号11 3.2.3确定带轮的基准直径和11 3.2.4确定中心距a和带的基准长度12 3.2.5验算小轮包角12 3.2.6计算带的根数12 3.2.7计算带作用在轴上的载荷Q 13 3.3齿轮传动设计13 3.3.1确定齿轮传动精度等级13 3.3.2按齿面接触疲劳强度确定中心距14 3.3.3验算齿面接触疲劳强度15 3.3.4验算齿根弯曲疲劳强度15 3.3.5齿轮主要参数和几何尺寸16 3.4轴的设计17 3.4.1Ⅰ轴的设计17 3.4.2Ⅱ轴的设计19 3.5主要零件的规格及加工要求22 3.5.1调直筒及调直块22 3.5.2齿轮22 3.5.3调直机的各传动轴均安装滚动轴承22 3.5.4传送压辊的选用和调整23 3.5.5定长机构的选择与调整23 第四章基于Pro/E的三维设计24 4.1 Pro/E三维设计软件概述24 4.2三维设计25 4.2.1牵引轮轴25 4.2.2齿轮25 4.2.3轴26 4.2.4调直筒26 4.2.5箱体26 4.2.6三维装配27 总结28 参考文献29 致谢30