调直切断机转毂调直机构及液压切断系统的设计与分析

发布时间：2018-06-04 10:13

本文选题：调直切断机 + 转毂机构　；参考：《华东交通大学》2015年硕士论文

【摘要】：近年来，随着中国制造业的飞速发展，用户对制造产品的品质要求越来越高，因此，采取有效措施改善产品的品质是目前的当务之急。东莞一家钢铁线材有限公司生产的产品现状是：订单多、批量小、精度要求高，在公司的众多设备中，转毂调直切断机是生产高精度钢铁线棒材不可缺少的重要设备之一。目前，我国的转毂调直切断机由于结构复杂、工作环境恶劣，生产中经常出现影响质量和成本的问题。转毂调直切断机存在的主要问题：调直工序技术要求高、难度大、需反复调直，，操作复杂、效率低；调直时，试切原材料浪费多、耗时长；铸铁压模影响加工产品的圆柱度和表面精度；同时客户对产品的表面粗糙度、直线度、切口圆柱度等有着严格的要求。本课题正是为了解决东莞这家钢铁线材有限公司转毂调直切断机存在的这些问题而进行研究，目前国内对圆棒钢材的调直和切断，主要还是采用机械式调直切断机，技术改进较少。本文以东莞这家钢铁线材有限公司的转毂调直切断机为研究对象，重点研究圆棒钢材的调直过程和切断方式，为解决实际生产中出现的问题提供参考。论文首先从现有调直切断机存在的问题和生产实际情况出发，在现有调直切断机基础上设计了新型调直切断机总体方案。其次，遵从圆棒钢材的调直机理及弹塑性弯曲变形分析，通过计算得出了调直转毂机构的结构设计参数，在此基础上提出可视化的调直方法和采用聚四氟乙烯为压模材料，提高了调直的效率和品质。然后，论文针对调直切断机机械式切断的不足之处，设计了一款符合实际生产需求的刀具转盘结构及其液压切断工作系统。
[Abstract]:In recent years, with the rapid development of Chinese manufacturing industry, the quality of manufactured products is becoming more and more demanding. Therefore, it is urgent to take effective measures to improve the quality of products. The products produced by a Dongguan Iron and Steel Wire Co., Ltd. are as follows: many orders, small batches and high precision requirements. Among the many equipments in the company, the hub straightening and cutting machine is one of the indispensable important equipments for producing high precision steel wire bar. At present, because of the complex structure and bad working environment, the problems of quality and cost often appear in the production of the rotary hub straightening and cutting machine in our country. The main problems of the hub straightening and cutting machine are as follows: the technical requirements of straightening process are high, the straightening process is difficult, the operation is complex and the efficiency is low, when straightening, the raw materials are wasted and the time is long. Cast iron die affects the cylinder degree and surface precision of the processed product, and the customer has strict requirements for the surface roughness, straightness and notch cylinder of the product. This subject is to solve these problems of the rotary hub straightening and cutting machine in Dongguan Iron and Steel Wire Co., Ltd. At present, the domestic straightening and cutting of round bar steel is mainly done by mechanical straightening and cutting machine. Technical improvement is less. In this paper, the turning hub straightening and cutting machine of Dongguan Iron and Steel Wire Co., Ltd is taken as the research object, and the straightening process and cutting mode of round bar steel are studied emphatically, which provides a reference for solving the problems in practical production. Firstly, based on the existing problems of straightening and cutting machine and the actual situation of production, the overall scheme of new straightening and cutting machine is designed on the basis of the existing straightening and cutting machine. Secondly, in accordance with the straightening mechanism of round bar steel and the analysis of elastoplastic bending deformation, the structural design parameters of straightening hub mechanism are obtained by calculation. On the basis of this, a visual straightening method and the use of PTFE as pressing die material are put forward. The efficiency and quality of straightening are improved. Then, aiming at the shortage of mechanical cutting of straightening and cutting machine, a kind of cutting tool turntable structure and its hydraulic cutting system are designed.
【学位授予单位】：华东交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TH13;TH122

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