摘要刀具磨损状态是影响车削加工的重要因素之一。目前，有关车削热及车削振动方面的试验研究已经取得很多成果，而对于不同刀具磨损状态下车削温度和 车削振动相关性研究的成果却比较少。为此，我们设计了详细的试验方案，通过 车削试验，分别采集了初期磨损刀和中期磨损刀的车削温度和车削振动信号，提 取车削温升均值和车削振动三向加速度均方根分别作为车削温度和振动的特征 值，并用特征值建立经验公式，分析了刀具磨损状态对车削温度和振动相关性的 影响，得到了以下结论：①车削温度和车削振动的相关性系数很大，经验公式得 到的车削温升均值拟合值都在实测值附近，说明车削振动对车削热有明显影响；72675
②中刀的相关性系数明显比新刀的系数要小，说明刀具磨损状态对车削温度和 振动相关性的影响很大。
毕业论文关键词：车削温度 车削振动 相关性 磨损状态
Experimental research on the influence of tool wear on the temperature and vibration
Abstract Tool wear state is one of the important factors that affect the machining process。 At present, the experimental research on the vibration of turning and turning has achieved a lot of results, but the results of the research on the correlation between the cutting temperature and the turning vibration for different tool wear states are relatively few。 To this end, we design a detailed test plan, through the cutting experiment were collected early wear knife and medium wear knife turning temperature and turning vibration signal, extraction temperature rise value turning and turning vibration to three RMS acceleration respectively as the characteristics of turning temperature and vibration value, and an empirical formula for the eigenvalue analysis。 The influence of cutting tool wear condition of temperature and vibration correlation。We get the
following conclusions: ①the correlation coefficient of temperature and vibration of
large turning turning, turning temperature empirical formula or the mean fitted values are measured near the turning vibration that has significant effect on cutting heat; ②
correlation coefficient of the knife is more obvious than coefficient the new knife to be small, shows great influence on cutting tool wear state of temperature and vibration correlation。
Key Words: Turning temperature Turning vibration Relevance Degree of wear
目 录
摘要-Ⅰ
Abstract--Ⅱ
目录-Ⅲ
1 绪论 1
1。1 研究意义 1
1。2 研究现状 1
1。3 研究的主要内容 4
2 车削振动和温度的理论与测试基础 6
2。1 车削振动的理论和测试基础 6
2。2 车削温度的理论和测试基础 12
3 车削热-振动试验系统 15
3。1 试验设备 15
3。2 试验方案 18
4 不同磨损状态下刀具车削热和车削振动的相关性 19
4。1 车削温度关于车削振动及主轴转速的相关性 19
4。2 给定一个车削参数时车削温度和车削振动的相关性 22
4。3 车削温度和车削振动的相关性 刀具磨损状态对车削热和振动相关性影响的试验研究:http://www.youerw.com/jixie/lunwen_82710.html