车削深度对车刀三向振动频域特性影响的试验设计
【毕业论文关键词】车削深度；刀具三向振动；频域分析; 试验研究
The Experimental Design of the Effect of Cutting depth on Frequency Domain Characteristics of Tool Three
Direction Vibration
【Abstract】In the turning process, tool vibration tends to affect lathe processing efficiency,reduce product quality,even will threaten the safety of workers. This article is mainly aimed at the experimental design of the effect of cutting depth on frequency domain characteristics of tool three direction vibration ,Installing three direction vibration on the machine tool,using two kinds of protocol: (1) Keeping the feed rate and spindle speed constant, change turning depth to research the variation of tool vibration.(2) In a given turning parameter, research the vibration law states of three tools of the new tool, tool wear on medium term, severe abrasion tool. The frequency domain characteristics of tool three direction vibration is to be analyzed by the vibration signal analyzers of Beijing spectrum. Studies show that: (1) When the turning depth increases, the self-power of the tangential is max and the effect of the tool vibration is biggest. Furthermore, the self-power spectrum of the axial reduces, the impact on tool vibration is minimal;(2) In a same turning parameter, the self-power spectrum of the axial direction first decreases and then increases; in the radial direction, the self-power spectrum first decreases and then increases;in the tangential direction,the self-power spectrum first decreases and then increases. The tool vibration of the serious wear is the most significant.
【Keyword】Turning depth; Three-vibration; Frequency domain analysis; Experimental study
目 录
摘要 1
前 言 2
1 绪论 3
1.1研究意义 3
1.2研究现状 3
1.3研究内容 4
1.4 研究方法和技术路线 5
2 振动理论与测试基础 6
2.1 振动理论 6
2.1.1 振动问题的分类 6
2.1.2振动力学在工程中的作用 7
2.1.3振动问题的分析与求解 7
2.2测试基础理论 7
2.2.1测试系统的组成 7
2.2.2被测量的分类 7
2.2.3振动测试的主要方法 8
2.2.4测试技术的任务 8
2.2.5测试系统动态特性的数学描述 8
2.2.6测试技术研究的主要内容 9
2.3振动测量仪器 9
2.3.1传感器的定义 9
2.3.2传感器的分类 9
3 车削振动试验 15
3.1试验设备 15
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