摩托车单向器飞轮冷挤压成形工艺及模具设计设计.doc

摩托车单向器飞轮冷挤压成形工艺及模具设计 （xxxxxxxxx，机械工程学院05级模具班） 摘要：本文综述了国内外冷挤压技术的历史及发展状况，并对飞轮的冷挤压成形国内外现状进行了分析。论文还提出了飞轮冷挤压成形的难点及解决思路，对工艺方案进行了必要的理论分析和研究。本文将重点放在模具设计方面，意图是让飞轮成形得以实现。在模具的设计和安装上，作者应该了多种新颖的结构，例如凹模采用预应力组合凹模，可以提高凹模强度，延长模具寿命，节省贵金属材料。从经济和适用的角度，模具安装上采用国产SY4-100千牛液压机。 从现实意义上说，能够利用国产的锻压设备生产进口产品，并且提高了生产效率，这将给我国的这个摩托车生产大国带来丰厚的效益。 关键词：飞轮 冷挤压 液压机 Isolators motorcycle flywheel cold extrusion process and die design  (Chongqing Technology and Business University, Institute of Mechanical Engineering Mold 05 classes) Abstract: This paper reviews the cold extrusion technology at home and abroad the history and development of the flywheel and the cold extrusion of the status quo at home and abroad are analyzed. Paper also proposed a flywheel cold extrusion and resolve the difficult ideas and programs to process the necessary theoretical analysis and research. This article will focus on the mold design, forming the intent is to allow the flywheel can be achieved. In the mold design and installation of on, the writer should be a variety of novel structures, such as the use of prestressed die die, die to increase strength, to extend die life and save precious metals. From an economic point of view and application, installed on the use of molds made SY4-100 kN hydraulic press. ???? From a practical sense, to take advantage of domestic production of forging equipment imports, and increased production efficiency, this will Chinas largest producer of the motorcycle brought huge benefits. Keywords: Cold extrusion. Hydraulic .Flywheel 目 录 1、 前言…………………………………………………………………………5 2、冷挤压简介………………………………………………………………… 8 2.1冷锻技术的概述………………………………………………………… 8 2.2正挤压…………………………………………………………………… 8 2.3反挤压…………………………………………………………………… 8 2.4复合挤压………………………………………………………………… 9 2.5径向挤压………………………………………………………………… 9 2.6冷挤压变形程度的表示方法…………………………………………… 10 2.7反挤压变形程度表示方法……………………………………………… 10 2.8正挤压实心件变形程度表示方法……………………………………… 11 2.9正挤压空心件变形程度表示方法……………………………………… 11 3、冷挤压毛坯的制备………………………………………………………… 12 3.1坯料形