Approach and Effect Analysis of Amplitude Frequency Performance Improvement in Metal Bar Cropping with Variable Frequency Vibration

Abstract:

In order to solve the narrow range and control difficulties of the excited frequency in metal bar cropping with variable frequency vibration, the structure of the eccentric block in cropping machine was improved on in the paper and a new structure model of changing the integral eccentric block into one of main eccentric block and some small adjustable eccentric blocks, was also proposed. The key parameters of the cropping machine in the action of two different types of eccentric blocks were analyzed theoretically in detail. At the same time, the corresponding amplitude frequency characteristics of the cropping machine were also obtained. The cropping experimental results of 45 steel bar show that the cross-section quality and the cropping time are improved remarkably in the action of one main eccentric block and four adjustable eccentric blocks, comparing with the cropping results in the action of the whole eccentric block.

• Periodical: Applied Mechanics and Materials (Volumes 152-154)
• Pages: 770-774
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.152-154.770
• Online since: January 2012
• Authors: Li Jun Zhang, Jie Qiong Xue, Sheng Dun Zhao, Yong Rui Zhao
• Keywords: Amplitude Frequency Characteristic, Cropping, Eccentric Block, Excited Frequency

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