三维椭圆振动辅助切削系统研究与开发

发布时间：2018-06-03 08:04

本文选题：三维椭圆振动辅助切削 + 微织构　；参考：《南京航空航天大学》2017年硕士论文

【摘要】：为了提高椭圆振动辅助切削加工复杂微织构的适应性,解决微织构低成本、高效率制造的需求,本文以三维椭圆振动辅助切削加工复杂微织构为研究对象,提出实现空间椭圆轨迹的辅助切削装置的设计方法,对三维椭圆振动辅助切削装置设计与优化、三维椭圆辅助切削性能测试以及三维椭圆辅助切削微织构形貌建模进行研究,建立三维椭圆振动辅助切削加工系统。论文主要研究内容和成果包括:1.提出了一种三维椭圆振动辅助切削装置设计方法。通过考虑椭圆振动辅助切削装置的布置形式,设计三维椭圆振动辅助切削装置的最简示意图,基于最简示意图设计三维椭圆振动切削装置的结构示意图,根据结构示意图建立三维椭圆振动辅助切削装置模型,构造三维椭圆振动辅助切削装置输出轨迹模型,利用有限元软件对装置进行模型分析与优化。2.研究并开展了三维椭圆振动辅助切削装置的性能测试。为了测试设计的三维椭圆振动辅助切削装置的输出性能,搭建了三维椭圆振动辅助切削装置性能测试平台,开展了装置的频率响应测试、相位差测试、输出电压测试、分辨率测试、最大行程测试,得到了装置的输出性能。3.研究并实现了三维椭圆振动辅助切削微织构的形貌建模和仿真方法。通过建立三维椭圆振动辅助切削加工的运动轨迹方程,由刀具刀尖圆弧沿着三维椭圆振动辅助切削加工的运动轨迹扫掠,将得到的扫略曲面与微织构所在的目标基准表面求交,从而获得三维椭圆振动辅助切削加工微织构的形貌模型,依据建立的形貌模型和仿真方法,分析了三维椭圆振动辅助切削装置的振动参数和加工参数对织构形貌的影响。4.研究并开发了三维椭圆振动辅助切削加工系统。通过对三维椭圆振动辅助切削加工系统各部分的研究和选型,搭建了加工系统,并对凹坑微织构进行了加工测试。经实验表明,本文的三维椭圆振动辅助切削加工系统达到了预期的目的。
[Abstract]:In order to improve the adaptability of elliptical vibration assisted machining complex microtexture and solve the need of low cost and high efficiency manufacture of microtexture, this paper takes 3D elliptical vibration assisted machining complex microtexture as the research object. The design and optimization of 3D elliptical vibration assisted cutting device, the testing of 3D elliptical assisted cutting performance and the modeling of 3D elliptical assisted cutting micro-texture morphology are proposed. A three-dimensional elliptical vibration aided cutting system is established. The main contents and achievements of this paper include: 1. A design method of three-dimensional elliptical vibration assisted cutting device is presented. By considering the layout of the elliptical vibration assisted cutting device, the simplest schematic diagram of the three-dimensional elliptical vibration auxiliary cutting device is designed, and the structure diagram of the three-dimensional elliptical vibration cutting device is designed based on the simplest schematic diagram. According to the structure diagram, the model of 3D elliptic vibration assisted cutting device is established, and the output trajectory model of 3D elliptical vibration auxiliary cutting device is constructed. The finite element software is used to analyze and optimize the model of the device. The performance test of three-dimensional elliptical vibration assisted cutting device is studied and carried out. In order to test the output performance of the designed 3D elliptical vibration assisted cutting device, a three-dimensional elliptical vibration assisted cutting device performance test platform was built, and the frequency response test, phase difference test, output voltage test of the device were carried out. Resolution test, maximum stroke test, the output performance of the device. 3. 3. The shape modeling and simulation method of 3D elliptical vibration assisted cutting microtexture is studied and realized. By establishing the motion trajectory equation of 3D elliptical vibration assisted cutting, the cutting tool tip arc is swept along the moving track of 3D elliptical vibration assisted cutting, and the resultant scanning surface is intersected with the reference surface of the target in which the microtexture is located. The shape model of 3D elliptical vibration assisted machining microtexture was obtained. According to the established morphology model and simulation method, the effect of vibration parameters and machining parameters of 3D elliptical vibration assisted cutting device on texture morphology was analyzed. A three-dimensional elliptical vibration aided cutting system is studied and developed. Through the research and selection of various parts of 3D elliptical vibration assisted machining system, a machining system was built, and the machining test of pit microtexture was carried out. The experimental results show that the three-dimensional elliptical vibration aided cutting system has achieved the desired purpose.
【学位授予单位】：南京航空航天大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TG502

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