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車削鋁棒時刀具表面振動測試的試驗設計

時間:2019-04-15 20:15來源:畢業論文
使用QLVC-ZSA1振動信號分析儀,采用加速度傳感器,利用數控機床對鋁棒進行車削,在主軸轉速、進給速度和切削深度三種不同切削要素下對刀具表面的振動情況進行分析和研究,得到了

【摘要】使用QLVC-ZSA1振動信號分析儀,采用加速度傳感器,利用數控機床對鋁棒進行車削,在主軸轉速、進給速度和切削深度三種不同切削要素下對刀具表面的振動情況進行分析和研究,得到了刀具表面的最大自功率譜變化曲線及相應的頻率曲線。研究得到:(1)不同車削要素下刀具的振動情況各不相同。當主軸轉速增大時,刀具振動上表面最大自功率譜值大于下表面,刀具上表面的最大自功率譜越來越大,而刀具下表面的最大自功率譜不是單調變化。當進給速度越來越大時,刀具上表面的最大自功率譜值大于下表面,但是刀具上表面的自功率譜逐漸減小,而刀具下表面的自功率譜逐漸增大。當切削深度越來越大時,刀具上表面最大自功率譜減小,而刀具下表面的最大自功率譜值緩慢上升。(2)給定切削要素的情況下,刀具上表面的自功率譜值大于下表面最大自功率譜,刀具上表面的振動明顯比刀具下表面的振動劇烈;(3)刀具上表面的頻率都在150Hz左右,而刀具下表面的頻率波動比較大。34569
畢業論文關鍵詞】刀具振動;最大自功率譜值;數控機床;鋁棒
Experimental Design of the Surface Vibration Test of the Cutter when Turning the Aluminum Rod
【Abstract】Using the Chongqing University of QLVC-ZSA1 vibration signal analyzer based on acceleration sensor, CNC machine tool is used for aluminum rod turning, in the spindle speed, feed rate and cutting depth of three different cutting elements of vibration on the surface of the tool of analysis and research, so as to get the tool surface maximum power spectrum curve and the corresponding frequency curve. Results: (1) the influence of the different elements of the turning, the cutting vibration is not the same. When the spindle speed is increased, the tool vibration on surface is the largest auto power spectrum value is greater than the surface, the tool surface, the maximum since the power spectrum is more and more big, and tool surface of the largest auto power spectrum is not monotonic changes, but has certain rules of. When the feed speed is more and more big, although the tool surface, the maximum auto power spectrum value is greater than the surface, but tool surface self power spectrum is gradually reduced, and tool surface self power spectrum is gradually increasing. When the cutting depth is more and more big, tool maximum surface auto power spectrum will decrease, but under the cutter surface, the maximum power spectrum value will increase to a very small. (2) each cutting element, tool surface vibration obviously ratio tool under the surface of the violent vibration, tool surface self power spectrum values are greater than under the surface of the maximum power spectrum; (3) tool on the frequency of the surface are at 150Hz, tool surface frequency fluctuation is relatively large. 源¥自%六:維;論-文'網=www.aftnzs.live
【Keyword】tool vibration;the maximum power spectrum value; CNC machine tool
目  錄
摘  要    1
前  言    2
1  緒論    3
1.1 研究意義    3
1.2 研究現狀    3
1.3 研究內容    5
1.4 研究路線    5
2 振動測量及分析原理    7
2.1 振動原理    7
2.1.1 振動的類型    7
2.1.2 振動測試的目的    7
2.1.3 振動測試的內容    7
2.1.4 機械振動測量系統    8
2.2 振動測試    9
2.2.1 振動測試方法    9
2.2.2 振動傳感器    9
2.2.3 振動信號分析儀器    13
2.3 信號的分析方法    16
2.3.1 信號的時域波形分析    16
2.3.2 信號的頻域分析    17 車削鋁棒時刀具表面振動測試的試驗設計:http://www.aftnzs.live/zidonghua/20190415/32105.html
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