冷轧机压下装置的设计--毕业设计论文.docVIP

冷轧机压下装置的设计 THE PUIIED DOWN OF STEEL ROOLLING DESIGN ABSTRACT This graduation thesis on the design of the system is a ring on the surface of the worm reducer and the cold pulled down design method. Torus worm reducer worm reducer is a form of this method is worm reducer and processing conditions of the use of mathematical and physical basis of the formula. In the paper, first of all, the worm made a brief introduction, then the worm on the design principle and the theoretical calculation. Then in accordance with the design criteria and design theory designed toroidal worm reducer. Then the components of the reducer to the size of the calculation and verification. The design represents the torus worm general design process. On the other worm in the design work will have value. At present, the torus worm reducer for the design, manufacture and application of domestic and foreign advanced level there are still large gaps between the comparison. Central China in the design and manufacture of worm reducer there is a process to a large extent the shortcomings, as revealed by the paper, important issues such as: cutting the root of the tooth; KEY WORDS: Pressure device, cold pulled down，worm reducer, 前　言 1 第1章 压下装置的设计与计算 3 第2章 压下装置减速器的选择 5 2.1减速器的作用 5 2.2齿轮减速器的特点 5 2.3蜗杆减速器的特点 6 第3章 电动机的选择 9 3.1电动机类型和结构型式 9 3.2电动机的容量 10 3.2.1确定减速器所需的功率 10 3.2.2确定传动装置效率 10 3.2.3电动机的技术数据 11 第4章 传动装置的传动比及动力参数计算 12 4.1传动装置运动参数的计算 12 4.1.1各轴功率计算 12 4.1.2各轴转速的计算 12 4.1.3各轴输入扭矩的计算 12 第5章 减速器部件的选择计算 13 5.1 蜗杆传动设计计算 13 5.1.1蜗轮、蜗杆材料选择 13 5.1.2确定蜗杆头数Z及蜗轮齿数Z 13 5.1.3验算压下螺丝的速度 13 5.1.4确定蜗杆蜗轮中心距a 14 5.1.5蜗杆传动几何参数设计 14 5.2 环面蜗轮蜗杆校核计算 17 5.3轴的结构设计 19 5.3.1 蜗杆轴的设计 19 5.3.2 蜗轮轴的设计 21 5.4轴的校核 24 5.4.1蜗杆轴的强度校核 25 5.4.2蜗轮轴的强度校核 27 5.5 滚动轴承的选择及校核 30 5.5.1蜗杆轴滚动轴承的选择及校核 30 5.5.2蜗轮轴上轴承的校核 32 5.6箱体结构尺寸及说明 34 5.7减速器的安装使用及维护 35 结 论 37 谢 辞 38 参考文献 39 前　言 轧机的压下装置是轧机的重要结构之一，用于调整辊缝，也称辊缝调整装置，其结构设计的好坏，直接关系着轧件的产量与质量。压下装置按传动方式可分为手动压下、电动压下和液压压下，手动压下装置一般多用于不经常进行调节、轧件精度要求不严格、以及轧制速度要求不高的中、小型型钢、线材和小型热轧板带轧机上。电动压下装置适用于板坯轧机、中厚板轧