超精密外圆磨床床身用人造花岗岩材料试验研究

发布时间：2018-03-29 13:54

本文选题：人造花岗岩　切入点：粘结剂　出处：《中原工学院》2017年硕士论文

【摘要】：超精密机床是实现超精密加工的载体,其性能直接影响工件的加工精度,加工效率和可靠性。当今,超精密机床的发展趋势是:高精度、高效率、高自动化。增大切削速度和切削量会引起机床振动,传统制造床身的材料由于材料自身某些缺陷,已逐渐不能适应当今超精密机床的发展与需求。人造花岗岩具有优良的阻尼特性、热稳定性、成型性、耐酸碱性、绿色无污染等优点,是制作超精密机床、精密仪器等基础件的理想材料之一。本文针对人造花岗岩材料的粘结剂性能、材料配方及制备工艺、试件基本性能、人造花岗岩超精密外圆磨床床身设计开展了研究,具体内容包括:系统研究了树脂、固化剂、稀释剂对粘结剂粘结强度的影响,以及固化剂用量对固化时间、固化温度的影响,测试了部分粘结剂的粘度值、胶块的软化点。根据制备工艺要求,确定了人造花岗岩原材料,逐步研究了骨料级配、填料、纤维、骨料支撑结构对材料抗压强度的影响。对制备的试件进行了基本性能研究,包括表面粗糙度、平面度、表面硬度、力学性能测试、模态分析。根据人造花岗岩超精密外圆磨床床身的设计要求,建立了人造花岗岩超精密外圆磨床实体模型,对实心床身进行了仿真分析和拓扑优化,设计4种优化方案,通过对比,得出了床身结构优化方案,并与相似结构铸铁床身的仿真分析结果进行对比;根据床身最终优化方案,设计了床身模具。
[Abstract]:Ultra-precision machine tool is the carrier of ultra-precision machining, and its performance directly affects the machining accuracy, machining efficiency and reliability of workpiece. Nowadays, the development trend of ultra-precision machine tool is: high precision, high efficiency, High automation. Increasing cutting speed and cutting quantity will cause vibration of machine tools. Traditional materials for making bed are due to some defects of the material itself. Artificial granite has excellent damping property, thermal stability, molding property, acid and alkali resistance, green and pollution-free, etc. It is a kind of ultra-precision machine tool. One of the ideal materials for basic parts such as precision instruments. In this paper, the properties of binder, material formula and preparation technology, the basic properties of the specimen and the design of the bed of the artificial granite ultra-precision outer circular grinder are studied. The main contents are as follows: the effects of resin, curing agent and diluent on the bond strength of binder, and the effect of curing agent dosage on curing time and curing temperature are studied systematically. The viscosity of some binders is tested. Softening point of rubber block. According to the preparation process requirements, the raw materials of artificial granite were determined, and the effects of aggregate gradation, filler, fiber and aggregate supporting structure on the compressive strength of the materials were studied step by step. The basic properties of the prepared specimens were studied. Including surface roughness, flatness, surface hardness, mechanical properties test, modal analysis. According to the design requirements of artificial granite ultra-precision outer circular grinder, a solid model of artificial granite ultra-precision external circular grinder is established. The simulation analysis and topology optimization of solid bed are carried out, and four optimization schemes are designed. Through comparison, the optimization scheme of bed structure is obtained, and the result is compared with the result of simulation analysis of similar structure cast iron bed, according to the final optimization scheme of bed, The die of the bed was designed.
【学位授予单位】：中原工学院
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TG581.1;TQ177.174

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