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毕业设计-小型液压圆管冷弯成形机成型及退料机构设计，共31页，10772字，附有autocad设计图纸、solid works及pro/e三维设计图纸。
摘 要
用辊式冷弯推挤变形，将圆形焊接管或无缝钢管加工成方形、矩形等异型管的方法，和冲压、折弯、拉拔等变形方法一样，也是金属压力加工范畴中的一种冷弯成形加工工艺。根据轧辊的动力传动方式，辊式冷弯成形又分为主动式和被动式两大类型。当前国内外由电动机带动轧辊的主动式冷弯机组应用比较普遍，仅国内就有机组约2000多套。冷弯型钢年生产能力达2000多万吨。其中大部分机组是以钢板为原料，辊压弯制为圆形管材或异型开口板材。用来生产方形矩形等异型管材的机组相对比较少，大中型机组全国仅有十多套。而利用辊式被动推挤圆变方冷弯技术的异型管成形机组在国内则更为稀少。仅有天冿钢管公司、秦皇岛东洋公司和苏南异型3套机组。?
当前在国内外经济社会日趋个性化发展的浪潮中，异型钢管作为更能恰当满足不同受力情况的经济断面型材，越来越受到人们的关注。适应建筑钢结构、桥梁、造船、机车车辆、机械加工等工业现代化的发展，各种异型钢管特别是大规格、厚壁方型、矩型钢管需求量日趋攀升。自2000年美国“811” 以后，世界各国材料专家苦心致力于对表面积小、大规格、厚壁、高刚度、高强度、耐火性强的建筑钢结构型材的开发。普遍关注于对方形和矩形钢管性能和生产工艺技术的研究。2003年国内天津钢管公司率先投建的RSH-500型被动辊式圆变方异型管冷成形生产线也正是为此应时而生。它以边长50-500毫米超宽产品规格范围和4-30毫米壁厚的大适应幅度，不仅填补了我国在这一专业领域上的空缺，而且成为至今世界辊压冷弯圆变方成形边长最大，壁厚最厚的生产机组。近年来在方、矩管生产基础上，天冿钢管公司利用该机组又成功开发出大口径钢管冷定径工艺。不仅实现了一机多用，而且定径精度高于国家标准。随着方、矩管应用市场的不断扩展，随着无缝钢管规格系列的不断拓宽，天冿钢管公司的大量高性能高质量新产品已源源不断的供应国内外的企业和工程。这一成功，必将会让业内人士重新审视这个一度曾被认为不宜推广发展的被动辊式圆变方异型管冷成形技术。也必然会把这一技术的深入研发推向新的高潮。?
关键词：冷弯，圆管，液压
Abstract
The development direction of harvester will be to high-tech direction, making out the applicability of harvester is the development of the market, is very promising for different regions developed different harvester. Thus, the corresponding manufacturing combine high performance is the development of foreign harvester. The development direction of harvester will be to high-tech direction, making out the applicability of harvester is the development of the market, is very promising for different regions developed different harvester. Thus, the corresponding manufacturing combine high performance is the development of foreign harvester. The rice combine harvester can complete harvesting, threshing, separation and bagging operations at one time. The development direction of harvester will be to high-tech direction, making out the applicability of harvester is the development of the market, is very promising for different regions developed different harvester. The development direction of harvester will be to high-tech direction, making out the applicability of harvester is the development of the market, is very promising for different regions developed different harvester. Thus, the corresponding manufacturing combine high performance is the development of foreign harvester. The rice combine harvester can complete harvesting, threshing, separation and bagging operations at one time. The machine has the advantages of small volume, light weight, flexible operation, through and good adaptability, can better solve the problem of big, medium-sized harvester to harvest in the hilly, mountainous and paddy field.Thus, the corresponding manufacturing combine high performance is the development of foreign harvester. The rice combine harvester can complete harvesting, threshing, separation and bagging operations at one time. The machine has the advantages of small volume, light weight, flexible operation, through and good adaptability, can better solve the problem of big, medium-sized harvester to harvest in the hilly, mountainous and paddy field. The machine has the advantages of small volume, light weight, flexible operation, through and good adaptability, can better solve the problem of big, medium-sized harvester to harvest in the hilly, mountainous and paddy field.The rice combine harvester can complete harvesting, threshing, separation and bagging operations at one time. The machine has the advantages of small volume, light weight, flexible operation, through and good adaptability, can better solve the problem of big, medium-sized harvester to harvest in the hilly, mountainous and paddy field.
Key Words: rice thresher threshing; improved design;
目 录
摘 要 II
Abstract III
目 录 V
第1章 绪论 1
第2章 总体方案确定 3
2.1 液压圆管冷弯机工作原理 3
2.2液压圆管冷弯机总体设计 4
2.2.1液压圆管冷弯机的类型定位 4
2.2.2 液压圆管冷弯机的整机结构及选择 4
2.2.3 液压圆管冷弯机的工作流程 4
第3章 液压圆管冷弯机设计 5
3.1 冷弯原理 5
3.2 液压圆管冷弯机类型选择 5
第4章 动力的选择 7
4.1 整机消耗的功率计算 7
4.1.1 液压圆管冷弯机的功率消耗的计算 7
4.1.2 折弯装置的功率消耗的计算 7
4.2 液压缸的选择 8
第5章 传动装置设计 8
5.1 传动结构 8
5.2 确定液压缸参数 8
5.3 计算压轴力 11
第6章 轴的设计与计算 12
6.1 轴的材料选择 12
6.2 轴的最小直径确定 12
6.3 轴的结构设计 12
6.4 轴的校核 13
第7章 键连接选择 16
第8章 压杆选用 17
8.1 压杆校核 17
8.2 冷弯压杆强度计算 18
8.3 压杆直径计算 18
8.4 冷弯压杆长度确定 18
第9章 液压圆管冷弯机退料机构设计 20
9.1 压杆冷弯退料设计 20
9.1.1 退料结构选择 20
9.1.2 退料的流程 20
9.1.3 相关参数的计算 20
9.2夹板的设计 21
9.2.1 夹板类型的确定 21
9.2.2 夹板直径的确定 21
9.2.3 夹板与压杆之间间隙的确定 22
第10章 电器PLC控制 20
结论 23
参考文献 24
致 谢 25