沙滩车差速轮的冷摆辗成形工艺

针对具有双螺旋齿面差速轮的形状特点,并结合冷摆辗成形工艺的特点,对冷摆辗成形工艺方案、预制坯的形状和尺寸、预制坯的成形工艺以及冷摆辗件的冷摆辗成形工艺等关键技术问题进行了研究;并对冷摆辗凹模芯的加工工艺作了介绍。试验结果表明,采用冷摆辗成形加工方法对差速轮的双螺旋齿形部分进行近净成形加工是高效而经济的。     

非回转铝合金薄板零件冷摆辗成形规律研究

基于Deform-3D平台建立了薄板零件冷摆辗成形三维有限元模型,研究了非回转铝合金薄板零件冷摆辗成形规律。揭示了薄板零件金属流动、模具充填规律以及等效应力和等效应变分布演化规律,阐明了薄板零件冷摆辗飞边分布不均匀性形成机理。最后开展了相关工艺实验,验证了有限元模拟结果的准确性。     

摩托车轮套冷摆辗成形工艺研究

对摩托车磁电机轮套的冷摆辗精密成形工艺进行了研究。讨论了坯料形状尺寸及摆辗成形工艺参数对轮套冷摆辗成形的影响。分析了摆辗成形件缺陷的产生原因,并提出了对它的防止措施。     

摩托车轮套冷摆辗成形工艺研究

对摩托车磁电机轮套的冷摆辗精密成形工艺进行了研究。讨论了坯料形状尺寸及摆辗成形工艺参数对轮套冷摆辗成形的影响。分析了摆辗成形件缺陷的产生原因,并提出了对它的防止措施。     

冷摆辗具的材料选择及其热处理

模具寿命是冷摆辗的关键问题之一,选择合理的模具材料以及热处理工艺可以提高冷摆辗模具的强韧性,从而提高模具寿命,基于摆动辗压工艺的基本原理,分析研究了冷摆辗模具的受力情况,并对冷摆辗模具的材料的选择及热处理工艺作了探讨。     

摆动辗压模具CAD的开发

采用AutoCADR1 4的三维实体造型功能 ,建立摆辗件的三维实体 ;根据零件的三维结构特征和尺寸特征 ,借助CAD的并、交、差运算 ,进行摆辗模具及摆辗件坯料的三维实体设计。     

摆动辗压模具CAD的开发

采用AutoCAD R14的三维实体造型功能,建立摆辗件的三维实体;根据零件的三维结构特征和尺寸特征,借助CAD的并、交、差运算,进行摆辗模具及摆辗件坯料的三维实体设计。     

SC110型汽车半轴齿轮的冷摆辗成形

简介ＰＸＷ－２０型冷摆辗机的结构与原理、概述冷摆辗ＳＣ１１０半轴齿轮的工艺设计及工艺参数、模具结构和制造。     

汽车方向机联结环的冷摆辗成形加工技术研究

对于上、下两端具有矩形凸台的薄壁法兰型联结环,采用冷摆辗成形加工方法对其矩形凸台部分进行近净成形加工是高效而经济的.对坯件的尺寸确定、40Cr钢坯件的球化退火处理、在冷摆辗成形过程中坯件的定位等问题进行了分析研究;并对冷摆辗模具结构设计、主要模具零部件的材料选择及加工质量作了详细的讨论.     

提高行星齿轮冷摆辗模具寿命

介绍了行星齿轮冷摆辗模具的失效形式,并从选材及热处理两个方面介绍了提高行星齿轮冷摆辗模具寿命的措施。     

Past developments and future trends in the rotary or orbital forging process

Rotary forging is a relatively new manufacturing process with potential for cost-effective applications, especially in cold forging of intricate parts to net shape. In this paper orbital forging and axial die rolling processes are included as subsets of rotary forging while radial forging, also known as rotary forging, has been excluded; these decisions are primarily based on die kinematics. Because of its recent origins, the rotary forging process is first described. Then, a historical perspective is provided to trace its recent origins. The machines are classified based on die kinematics. Die kinematics influence the stick-slip or position discrepancy behavior of the different machine types and have deep implications on the die filling and accuracy capabilities of these machines. Rotary forging machines currently in operation in the U.S. and their applications are presented in greater detail. The discussion on future applications and potential research issues is primary based on the author’s own perception of future trends in this emerging field. The author is with.     

轿车直齿圆锥齿轮冷精锻试验研究

根据某轿车行星齿轮零件设计了冷精锻工艺。分析了几种轿车直齿圆锥齿轮冷精锻模具结构以及两种坯料形状对成形的影响，得到了冷精锻轿车直齿圆锥齿轮过程中工艺参数和模具结构对零件成形的影响规律，解决了冷精锻齿轮工艺中的一些问题。     

VE泵端面凸轮冷摆辗模具的设计与加工

分析了VE泵端面凸轮的3种精密成形加工方法 ,确定了端面凸轮冷摆辗精密成形的合理模具结构 ,并对该模具的加工工艺作了介绍     

Process design and control in cold rotary forging of non-rotary gear parts

This paper is aimed to investigate the process design and control method in cold rotary forging of parts with non-rotary upper and lower profiles. Using the analytical and FE simulation methods, three critical technological problems in the cold rotary forging process of this kind of parts are resolved reasonably. The first one is that an accurate design method of the non-rotary upper die is presented based on the geometrical and kinematic relationship between the upper die and upper profile of parts. The second one is that the interference judgment between the upper die and upper profile of parts can be achieved by analytically obtaining the trajectory of any point in the upper die. The third one is that the metal flow and geometrical accuracy of the non-rotary upper profile of parts can be effectively controlled through optimizing the process parameters. On the basis of the above research, the cold rotary forging process of a typical gear part, both the upper and lower profiles of which are non-rotary, is investigated numerically and experimentally. The results indicate that the desirable geometrical accuracy of the non-rotary upper profile of the gear part can be obtained, which verifies that the process design and control method presented in this paper is valid and cold rotary forging can thus be used to manufacture the parts with non-rotary upper and lower profiles.     

摆动辗压成形工艺CAD系统的研制

由于摆动辗压工艺比其它塑性成形工艺更为复杂,其工艺设计的难度和工作量也较大.摆动辗压成形工艺CAD的研制主要是提高摆辗工艺的设计效率和精度.以节油器内花键套为对象,建立了预制坯的体积计算模型及其结构设计模型,确立了摆动模的设计模型和凹模的力学分析模型,给出了摆辗工艺参数和力能参数的设计模型.在此基础上对摆辗成形工艺CAD系统进行了结构分析和功能分析,实现了预制坯、摆辗模具和摆辗参数的计算机辅助设计,设计效率可以提高60%以上,废品率降低25%以上,并结合实例得到了满意的设计结果.     

直齿圆柱齿轮净形成形技术研究

研究了高精度直齿圆柱齿轮净形成形的若干相关技术,提出了钢质直齿圆柱齿轮冷精锻约束分流两步成形工艺,并对净形成形中的凹模修正设计方法、模具材料和结构、软化及润滑等实际应用关键技术问题进行了探索,冷精锻２０ Ｃｒ Ｍｎ Ｔｉ钢直齿圆柱齿轮具有较高精度。     

纵向振动摆动辗压精密成形试验研究

本文结合节油器内花键套的结构特点,叙述了采用振动摆辗加工该零件的振型的确定和摆辗工艺参数的选择;进行了坯料的设计及其模具设计,并对试验结果进行了分析。     

冰激凌冷冻罗格的工艺分析及模具设计

分析了冰激凌冷冻罗格零件的结构、加工工艺,确定了零件的成形工序,设计出了拉伸模、切边模。同时根据不同形状的冷冻罗格,制定了合理的冲压工艺。     

异形触指冷镦成形工艺及模具结构

通过对异形触指的成形工艺及模具结构分析,提出了该零件成形时存在的问题及比较合适的毛坯形状,并用Defom-3D进行数值模拟,为类似零件的冷锻成形探索了一条行之有效的途径.