金刚砂线切割机的研制及其切割特性研究

发布时间：2018-05-11 06:41

本文选题：金刚砂线 + 速度同步　；参考：《华东理工大学》2017年硕士论文

【摘要】：磁性材料、硅晶体、宝石等类似材料由于其具有脆性大、表面加工质量要求高等特点,不适合采用常规的机加工工艺进行加工。工业生产中使用的多线切割机虽然较好地解决了这一问题,但是由于其系统复杂,造价昂贵,主要适用于大批量生产,不能满足样片及实验室单片切割的要求。针对这一问题,本文提出使用固结金刚砂线切割技术的工艺方法,研制了一种具有与多线切割机类似性能的小型金刚砂线切割机,并对其进行了试验研究和理论分析。论文开展了以下工作:(1)开展了金刚砂线切割机的方案研究。针对张力调节与控制的复杂性,提出了采用气弹簧为金刚砂线提供张力的技术方案,并通过同轴结构实现收、放线轮的转速一致,实现了切割过程中张力的稳定控制。在此基础上,完成了金刚砂线切割机的机械设计。(2)进行了控制系统的硬件搭建和软件开发。基于Modbus协议,使用LabVIEW开发了人机交互界面,开展了相关技术的研究。集成金刚砂线切割机各功能模块,实现了便捷控制。(3)建立了金刚砂线切割的物理模型和单颗金刚砂切削深度模型;分析了切割过程中金刚砂线上最大张紧力和最大进给力;研究了切割速度、进给速度等工艺参数对切割表面质量的影响,获得了切片表面质量较优效果时的切割速度、进给速度等工艺参数。(4)硬脆材料的切片试验结果表明:金刚砂线切割机样机控制系统各模块之间运行协调,气弹簧在张力调节方面切实可行;切割过程中材料损耗少,锯切运行平稳,所切薄片表面质量较好。本课题设计的金刚砂线切割机采用了气弹簧调节金刚砂线张力,利用同轴结构实现绕线轮的转速一致,并且通过LabVIEW实现了金刚砂线切割机的便捷控制。研究方法和思路对于开发新型线切割机具有良好的指导意义。
[Abstract]:Due to its high brittleness and high quality of surface processing, magnetic materials, silicon crystals, gemstones and other similar materials are not suitable to be machined by conventional machining technology. The multi-wire cutting machine used in industrial production has solved this problem well, but because of its complex system and high cost, it is mainly suitable for mass production and can not meet the requirements of sample cutting and laboratory monolithic cutting. In order to solve this problem, this paper puts forward a new technology of wire cutting with bonded Emery, and develops a kind of small Emery cutting machine with similar performance as multi-wire cutting machine, and makes experimental research and theoretical analysis on it. In this paper, the following work is carried out: 1) the project of Emery wire cutting machine is studied. In view of the complexity of tension regulation and control, the technical scheme of using gas spring to provide tension for Emery wire is put forward, and the coaxial structure is used to realize the collection, the rotational speed of the discharge wheel is consistent, and the stable control of tension in the cutting process is realized. On this basis, the mechanical design of Emery cutting machine is completed. 2) the hardware construction and software development of the control system are carried out. Based on Modbus protocol, the man-machine interface is developed with LabVIEW, and the related technology is studied. The physical model of Emery wire cutting and the cutting depth model of single Emery are established, and the maximum tension and feed force on Emery wire during cutting are analyzed. The effects of cutting speed and feed rate on the cutting surface quality are studied. The cutting speed is obtained when the slice surface quality is better. The results of slicing test of hard and brittle materials show that: the operation of the control system of the prototype of Emery cutting machine is coordinated, the air spring is feasible in tension regulation, and the material loss is less in the cutting process. The sawing operation is stable and the surface quality of the sliced slice is good. The Emery wire cutting machine designed in this paper adopts gas spring to adjust the tension of Emery wire, uses coaxial structure to realize the same speed of winding wheel, and realizes the convenient control of Emery wire cutting machine by LabVIEW. The research method and train of thought have good guiding significance for the development of new line cutting machine.
【学位授予单位】：华东理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TG48

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