Investigation of Vibration Characteristics of Horizontal Band Saw Frame Structure
碩士 === 國立臺北科技大學 === 製造科技研究所 === 102 === In the present, high precision, high cutting speed and long lifetime have become the main developing trend of band saw machine. The amplitude of vibration of the machine affects the machine accuracy. Therefore, it is important to investigate the rigidity and d...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2014
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| Online Access: | http://ndltd.ncl.edu.tw/handle/w6br25 |
| Summary: | 碩士 === 國立臺北科技大學 === 製造科技研究所 === 102 === In the present, high precision, high cutting speed and long lifetime have become the main developing trend of band saw machine. The amplitude of vibration of the machine affects the machine accuracy. Therefore, it is important to investigate the rigidity and dynamic characteristics of the band saw machine designed in order to avoid resonance phenomena and upgrade the efficiency and lifetime of the machine.
The structural analysis of a selected horizontal metal band saw machine based on 3D finite element model are conducted to obtain the structural natural frequencies and associated mode shapes, and the harmonic responses. The optimal design parameters of the band saw module based on the minimization of amplitude of lower vibration mode are also performed by the Taguchi method. The stress state into the blade is also analyzed to learn the relationship of blade length and driving wheel diameter. Finally, an improved design based on the above analysis is obtained. The preliminary results show that amplitude of vibration is reduced 48.2 % for first mode and 10 % for second mode as compared to original design.
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