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標題: 工具機之Z軸振動及負載研究
A Study on the Vibration and Loading on Z axis of Machine Tools
作者: 李宗融
Li, Zong-Rong
關鍵字: Cantilever beam
Simple beam
Natural frequency
Mode shape function
Harmonic analysis
出版社: 機械工程學系所
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摘要: 近年來由於加工品質不斷地提高,使工具機的性能需求也逐漸提高,因此對於加工精度的要求將是公司與顧客所重視的部分。而各家公司為了改善工具機的精度,不斷地開發新機種來提高精度,或是針對原始模型作最佳化設計。而造成加工精度最大的問題在於主軸頭與平台之間的位移量,由於負載及振動的影響,使主軸頭與平台的相對位移量作改變。 因此本研究將探討主軸頭與平台間因受負載與振動所產生的位移量大小。先將實體模型作數學模型分析,並簡化其結構依據整體體積與重量為主,再將簡化模型以懸臂樑與簡支樑的固定方式,作理論值與分析值之比較,分析其結果與整體模型之間的誤差,並提出造成誤差的原因,作為未來改善的方向,而將得到的結果做為未來研究的依據。
Due to the improvement of machining quality, the demands of high performance of machine tool have been increased in recent years. Hence, the requirements for high machining precision gain a lot of intentions by the customers and machine makers. To improve the precision of machine tool, most companies have made their efforts on developing new model or doing optimization design on their origin designs. One of the key issues that cause the precision problem is the displacement between the spindle head and the platform. The relative displacement between the spindle head and platform will vary due to the effect of loading and vibration. Hence, in this thesis, the relative displacement between spindle head and platform due to loading and vibration will be studied. The mathematic model analysis is performed in the first beginning. A simplified model is then constructed according to its volume and weight. The cantilever beam and simple beam are then used for model analysis. The analyzing results are then being used for comparison between theoretical values and analysis values. According to the verification results, the causing of errors will then be discussed for future improvements and for further studies.
其他識別: U0005-2508200814180700
Appears in Collections:機械工程學系所



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