旋压工艺与无心轴托辊

叙述了旋压工艺的概念，工艺特点：分析了目前生产的长辊部位存在的问题；论述了用旋压工艺方法研制了了无心轴辊的优点及新型托辊的工艺流程。     

新型无心轴托辊的旋压工艺

通过对目前生产的有心轴托辊部件的结构分析,论述了有心轴托辊部件的缺点和新型无心轴托辊的优点,并制定了新型无心轴托辊的工艺流程,介绍了新型无心轴托辊的旋压工艺在车床上的应用和应注意的问题。     

整体旋压式无心轴托辊结构参数分析

针对目前带式输送机托辊存在的问题,提出了整体旋压式无心轴托辊的新结构。首先分析了现有托辊结构的不足,提出了新托辊重量轻,运行阻力小,承载力大的特点。从强度和旋压工艺出发,论述了确定托辊结构参数的方法。最后分析了材料性能及相对壁厚对旋压性能的影响。     

整体无心轴托辊管体旋压道次的试验研究

缩颈旋压工艺是制造无心轴托辊的最佳方法之一。在旋压成形过程中,旋压道次的选择对旋压后管体零件的局部变薄以及拉裂等缺陷有重要影响。将普通车床C6140改装成PX-3旋压设备,对外径准108 mm,壁厚t=4 mm,材质为20钢的无缝钢管进行缩颈旋压试验,确定了合理的旋压道次,完成了托辊的缩颈旋压成形。     

整体式无心轴托辊几何参数分析

针对目前带式输送机托辊中存在的问题 ,提出整体式无心轴托辊的新结构。文章从强度和旋压工艺出发 ,论述了确定托辊几何参数的方法     

无心轴新型托辊的研制

对目前托辊部件设计制造中存在的问题进行了分析，提出用切向滚压法（旋压法）研制无心轴新型托辊，并对其优越性作了分析     

整体式无心托辊旋压成形的有限元分析

采用ANSYS有限元分析软件所提供的面 -面接触单元对托辊的旋压过程进行有限元分析。得出了在不同旋轮工作角的情况下 ,坯料的应力、应变的云图 ,分析了旋轮工作角对坯料成形过程的影响及薄壁筒件反旋缩口旋压的变形机理 ,所得出的结果与实际结果基本吻合     

整体式无心轴托辊的结构分析及改进

托辊是带式输送机最主要的部件之一。文章利用COSOMS／WORKS软件对一种新型整体式无心轴托辊进行有限元分析,对其结构提出了具体的改进方法：再用ADAMS软件进行动态仿真。     

直筒件强旋缩径的台阶成形与工装

介绍了直筒件缩径和台阶成形的旋压试验过程，着重对台阶的多道次强旋成形工艺、精整工装设计和台阶壁厚检验等方面进行了探索和实践。     

辊压成型机辊轴辊套过盈接触有限元分析

根据高压对辊成型机关键部件——挤压辊的结构特点和工作特性,使用有限元方法对挤压辊(由辊轴和辊套组成)进行三维建模,分析了辊轴与辊套配合在不同过盈量下的接触应力分布及滑移趋势。结果表明,挤压辊辊轴与辊套配合部分的两个端面是应力集中区,实际设计加工时应特别考虑如何减少应力集中。     

带式输送机滚筒参数的确定

介绍钢绳芯带式输送机中滚筒参数的确定     

旋压技术在复杂形状零件成形中的应用

主要阐述了非轴对称、椭圆和非圆截面空心件的旋压成形机理和近年来的研究现状.     

Influence of nominal reduction of the blank radius per path on the neck spinning of oblique tubes

The process of the neck spinning of oblique tubes is simulated by means of the 3D elastic-plastic finite element software, MSC. MARC. The dynamic boundary and contact problems in simulation are solved. The characteristics of the metal flowing, the distributions of the stress and strain, the possible defects and areas during spinning are obtained. The influence of the nominal reduction of the blank radius per path on the metal flowing and deformation is also researched theoretically and experimentally. It shows that the nominal reduction of the blank radius per path has great influence on the neck spinning process of oblique tubes. A reasonable nominal reduction of the blank radius per path is very important to guarantee the proceeding of the spinning process and to obtain a sound products.     

输送带的跑偏与调偏托辊

阐述了带式输送机输送带跑偏的各种原因及应采取的调整措施 ,介绍了目前几种主要的调偏托辊装置 ,并分析了调偏托辊的调偏原理 ,推出一种性能优良的回转式锥形调偏托辊     

Influence of nominal reduction of the blank radius per path on the neck spinning of oblique tubes

The process of the neck spinning of oblique tubes is simulated by means of the 3D elastic-plastic finite element software, MSC. MARC. The dynamic boundary and contact problems in simulation are solved. The characteristics of the metal flowing, the distributions of the stress and strain, the possible defects and areas during spinning are obtained. The influence of the nominal reduction of the blank radius per path on the metal flowing and deformation is also researched theoretically and experimentally. It shows that the nominal reduction of the blank radius per path has great influence on the neck spinning process of oblique tubes. A reasonable nominal reduction of the blank radius per path is very important to guarantee the proceeding of the spinning process and to obtain a sound products.     

Influence of nominal reduction of the blank radius per path on the neck spinning of oblique tubes

1IntroductionSpinningis a widely used metal forming process.It is characterized by board wide producing range,high forming precision,lowproduction cost and high utilization of the forming equipment and material[1].In the traditional opinion,spinningis considered as only can be usedto produce the axisymmetric rotationalpart.However,the innovation of the spinning technology in recent years has made it break through theli mit of producing the axisymmetrical rotational part,and some of the oblique…     

带式输送机托辊的工艺制定与质量控制

分析了托辊存在的问题 ,并进一步指出托辊的结构、制造质量等是影响托辊质量的主要因素。通过对托辊制造工艺的制定及质量控制手段的完善 ,使托辊的产品质量得到了明显提高。